Civil engineering construction of dam pivot of Dukouba Hydropower Station

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2.5.2 The construction plant facilities in the construction workshop mainly consist of a reinforcement processing plant and a wood formwork processing plant, which are mainly responsible for the reinforcement processing and formwork fabrication of the project. The reinforcement processing plant and the wood formwork processing plant are arranged near the main camp on the right bank, with a total area of 2400m2. The reinforcement processing plant covers an area of 1675m2, with a reinforcement raw material stacking area, a reinforcement processing semi-finished product stacking area and a plant area. There are offices, duty rooms and tool room processing workshops in the plant area. Building area: 150m2 for brick structure. The total amount of reinforcement processing in this project is about 2882t. According to the construction schedule, the production capacity of reinforcement processing is proposed to be 50t/shift, with two shifts at the peak. Rebar processing and production shall be carried out in advance and in a balanced manner according to the project progress to reduce the daily production intensity and labor consumption. See Table 2-3 for equipment of reinforcement plant. Table 2-3 Allocation of Main Equipment for Reinforcement Processing

Construction of Civil Works of Dukouba Hydropower Station Dam Complex - Figure 1

Construction of Civil Works of Dukouba Hydropower Station Dam Complex - Figure 2

Construction of Civil Works of Dukouba Hydropower Station Dam Complex - Figure 3

Construction of Civil Works of Dukouba Hydropower Station Dam Complex - Figure 4

Construction of Civil Works of Dukouba Hydropower Station Dam Complex - Figure 5

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The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir.

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The construction organization design of the dam civil works of Dukouba Hydropower Station is detailed and rich, which can be downloaded by netizens. Dukouba Hydropower Station is a hybrid power station, which is located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing The first level of cascade planning, the dam site area controls a drainage area of 765km2, and the average annual flow is 18.2m3/s. The power station is a It is a Grade III medium-sized project mainly for power generation and with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, The effective storage capacity is 70.11 million m, which is an annual regulation reservoir.

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Dukouba Hydropower Station is a hybrid power station, located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing, which is the first level of Meixi cascade planning. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir. The dam site is located 7km upstream of Xinzheng Township, Fengjie County, 90km away from Fengjie County; The plant is located at the Dalangou of Pingping Town, 54km away from Fengjie County. The main structures of Dukouba Hydropower Station include water retaining (discharging) structures, water intake structures, diversion structures and power house, with a total installed capacity of 129MW (2 × 64.5MW). Concrete arch dam is a Grade 3 building. The foundation surface elevation is ▽ 470.00m, the dam crest elevation is ▽ 578.50m, and the maximum dam height is 108.5m. Parabolic variable thickness double curvature arch dam is adopted for its shape. The center angle of the crown is 98 °, the maximum half center angle is 46.76 °, and the minimum half center angle is 26.88 °. The maximum radius of curvature of the arch ring center line at the crown beam is 120.6m, the minimum radius of curvature is 53.4m, and the dam axis is 284.123m long. It is divided into 16 dam sections. The dam crest is 4.5m thick, the bottom is 20.0m thick, and the thickness height ratio is 0.18. Grouting gallery, traffic gallery, sump, pump and vent pipe are set inside the dam body, and grouting adit, drainage tunnel, traffic bridge, dam rear bridge and elevator shaft are set outside the dam.

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Dukouba Hydropower Station is a hybrid power station located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing. It is the first level of cascade planning of Meixi River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir. The dam site is located 7km upstream of Xinzheng Township, Fengjie County, 90km away from Fengjie County; The plant is located at the Dalangou of Pingping Town, 54km away from Fengjie County. The main structures of Dukouba Hydropower Station include water retaining (discharging) structures, water intake structures, diversion structures and power house, with a total installed capacity of 129MW (2 × 64.5MW). Concrete arch dam is a Grade 3 building. The foundation surface elevation is ▽ 470.00m, the dam crest elevation is ▽ 578.50m, and the maximum dam height is 108.5m. Parabolic variable thickness double curvature arch dam is adopted for its shape. The center angle of the crown is 98 °, the maximum half center angle is 46.76 °, and the minimum half center angle is 26.88 °. The maximum radius of curvature of the arch ring center line at the crown beam is 120.6m, the minimum radius of curvature is 53.4m, and the dam axis is 284.123m long. It is divided into 16 dam sections. The dam crest is 4.5m thick, the bottom is 20.0m thick, and the thickness height ratio is 0.18. Grouting gallery, traffic gallery, water collecting well, pumping pump and vent pipe are set inside the dam body, and grouting adit, drainage tunnel, traffic bridge, dam rear bridge and elevator shaft are set outside the dam

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The main contents of this data include: project overview, general construction layout Construction description of diversion and construction drainage, general construction schedule, earthwork, grouting, concrete, masonry, prototype observation, main mechanical equipment and labor allocation, organization, construction quality assurance system and measures, construction safety assurance system and measures, and environmental protection during construction. Chapter I Project Overview 1.1 Project Overview Dukouba Hydropower Station is a hybrid power station located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing. It is the first level of cascade planning of Meixi River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir. The dam site is located 7km upstream of Xinzheng Township, Fengjie County, 90km away from Fengjie County; The plant is located at the Dalangou of Pingping Town, 54km away from Fengjie County. The main structures of Dukouba Hydropower Station include water retaining (discharging) structures, water intake structures, diversion structures and power house, with a total installed capacity of 129MW (2 × 64.5MW). Concrete arch dam is a Grade 3 building. The foundation surface elevation is ▽ 470.00m, the dam crest elevation is ▽ 578.50m, and the maximum dam height is 108.5m. Parabolic variable thickness double curvature arch dam is adopted for its shape. The center angle of the crown is 98 °, the maximum half center angle is 46.76 °, and the minimum half center angle is 26.88 °. 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The front of weir crest adopts 1/4 elliptic curve, the rear of weir crest adopts curve equation, and the outlet adopts downflow. The maximum discharge is 3840m3/s, and the corresponding unit width flow is 116.4m3/s · m. As an energy dissipation structure, the plunge pool is a Grade 3 structure, including plunge pool, secondary dam and apron. The plunge pool is stepped, 165.53m long, 44m wide at the bottom, 79.44m wide at the top, and 469.0m at the lowest bottom elevation. At the end of the plunge pool, there are two dams with high backwater level. The axis is 66m long, 17.5m high, 2.7m wide at the top, 27.2m wide at the bottom, and ▽ 474.5m high at the bottom. There are drainage galleries and pumps in the dam. Behind the two dams, there is a 20m long apron and a toothed wall. The water intake adopts the tower type, which is divided into the upper structure and the lower structure. The substructure includes the water inlet passage, trash rack, trash rack breast wall and bulkhead gate shaft; The upper structure includes the water intake operation and maintenance platform, trash rack hoist chamber, hoist working bridge, bulkhead gate hoist chamber and traffic bridge. The elevation of water inlet bottom plate is ▽ 525.80m, and the elevation of maintenance platform is ▽ 578.50m. The headrace tunnel is arranged along the left bank, 600m long, round, 4.2m in diameter, and is lined with full section concrete. The cofferdam type is overflow cofferdam at the upstream and overflow cofferdam at the downstream. The upstream cofferdam shall be constructed by throwing and filling rubble revetment on the upstream face, reinforcing bar gabion slope pressing on the downstream face and anti-seepage with C20 concrete face slab. The downstream cofferdam is filled with earth and stone, and the structure of composite geomembrane seepage prevention is adopted. In order to meet the needs of mechanical construction, flood control and rescue, traffic and slag removal, the top width of upstream and downstream cofferdams is 8.0m. The upstream cofferdam is 14.4m high, the weir top elevation is ▽ 496.70m, and the axis length is 72.15m. The downstream cofferdam is 6.5m high, the weir top elevation is ▽ 486.80m, and the axis length is 31.3m. The diversion bottom outlet is constructed and blocked, and the diversion tunnel is blocked. The two diversion bottom outlets are arranged on the 8 # and 9 # dam monoliths. The elevation of the bottom outlets is 486.40m, and the size of the bottom outlets is 7m × 7m. The bottom outlets need to be plugged finally. The diversion tunnel is blocked with a gate for temporary water retaining, and the length of the plug is 36m. The construction diversion and water flow control works include river closure, drainage, construction of diversion bottom outlet, preparation of diversion bottom outlet and diversion tunnel plugging, flood control and other works, as well as other relevant temporary works. 1.2 Main contract items and quantities Main contract items include: concrete arch dam works, plunge pool works, water intake works, tunnel works. See the following table for main quantities. The construction period of Dukouba Junction Project is scheduled to start in the middle of July 2007, and the main works will be completed on June 1, 2010. Meixi River belongs to the middle subtropical warm humid monsoon climate zone, with mild climate, abundant rainfall, four distinct seasons, suitable lighting, long frost free period, frequent dry winter, and prominent summer drought. Due to the impact of topography, local microclimate features are obvious. The precipitation in the basin is abundant, but the distribution is uneven throughout the year. The precipitation in the rainy season is from April to October, accounting for 88.2% of the annual precipitation. The precipitation in July is the largest, accounting for 18.0% of the annual precipitation. The dry season precipitation from December to February accounts for about 4.1% of the annual precipitation. The interannual variation of precipitation is large. The average annual precipitation is 1437.2mm, the maximum annual precipitation is 1815.5mm, the minimum annual precipitation is 894.1mm, and the multiple coefficient is 2.03. Rainstorms in the Meixi River basin mostly occur from May to September, and a heavy rainstorm process usually lasts for 1 day to 3 days. Most of the rainfall is concentrated within 24 hours. Affected by the rainstorm in Daba Mountain, the rainstorm often occurs around Jianlou, Jianshan and Dukouba. Temperature: the annual average temperature is 16.8 ℃, the extreme maximum temperature is 39.8 ℃, and the extreme minimum temperature is - 9.2 ℃. Sunshine: annual average sunshine is 1507.4h. Humidity: annual average relative humidity is 69.1%. Wind speed and direction: the annual average wind speed is 1.9m/s, and the wind direction is mostly NE. The annual average maximum wind speed is 14.5m/s, and the measured instantaneous maximum wind speed is 19.0m/s;. Evaporation: annual average evaporation is 1405.4mm. 1.5 External traffic conditions The external traffic conditions of the project are relatively convenient. The project area is 90km away from Fengjie County and 7km away from Xinzheng Township. Fengjie is 119 km upstream from the Yangtze River waterway to Wanxian, 326 km to Fuling, and 446 km to Chongqing; 35 km down to Wushan, 202 km to Yichang, and 2054 km to Shanghai. Water transport conditions are superior. On site transportation: the existing rural roads from Xinzheng Township to Zhuyuan Township and Jiannong Township pass through the left and right banks of the project area. A total of 2.9km of new construction roads are required for the dam access roads on the left and right banks of the dam and the connecting roads between the quarry and the screening and mixing system. The left bank road is 2.17km long, and the right bank road is 0.7km long A total of 190 pages.

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The external transportation conditions of the project are relatively convenient. The project area is 90km away from Fengjie County and 7km away from Xinzheng Township.

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Dukouba Hydropower Station Dam Civil works Construction organization design document
Dukouba Hydropower Station is a hybrid power station located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing. It is the first level of cascade planning of Meixi River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir. The dam site is located 7km upstream of Xinzheng Township, Fengjie County, 90km away from Fengjie County; The plant is located at the Dalangou of Pingping Town, 54km away from Fengjie County. The main structures of Dukouba Hydropower Station include water retaining (discharging) structures, water intake structures, diversion structures and power house, with a total installed capacity of 129MW (2 × 64.5MW). Concrete arch dam is a Grade 3 building. The foundation surface elevation is ▽ 470.00m, the dam crest elevation is ▽ 578.50m, and the maximum dam height is 108.5m. Parabolic variable thickness double curvature arch dam is adopted for its shape. The center angle of the crown is 98 °, the maximum half center angle is 46.76 °, and the minimum half center angle is 26.88 °. The maximum radius of curvature of the arch ring center line at the crown beam is 120.6m, the minimum radius of curvature is 53.4m, and the dam axis is 284.123m long. It is divided into 16 dam sections. The dam crest is 4.5m thick, the bottom is 20.0m thick, and the thickness height ratio is 0.18. Grouting gallery, traffic gallery, sump, pump and vent pipe are set inside the dam body, and grouting adit, drainage tunnel, traffic bridge, dam rear bridge and elevator shaft are set outside the dam. The flood discharge structure is located in the middle of the dam. The center line of the overflow weir coincides with the center line of the dam. It is composed of three overflow surface holes with the size of 12m × 12m (width × height). Each hole is equipped with an arc working gate for control, which is opened and closed by a hydraulic hoist. Weir body adopts WES type weir surface curve, and weir top elevation ▽ 563.00m. The front of weir crest adopts 1/4 elliptic curve, the rear of weir crest adopts curve equation, and the outlet adopts downflow. The maximum discharge is 3840m3/s, and the corresponding unit width flow is 116.4m3/s · m. As an energy dissipation structure, the plunge pool is a Grade 3 structure, including plunge pool, secondary dam and apron. The plunge pool is stepped, 165.53m long, 44m wide at the bottom, 79.44m wide at the top, and 469.0m at the lowest bottom elevation. At the end of the plunge pool, there are two dams with high backwater level. The axis is 66m long, 17.5m high, 2.7m wide at the top, 27.2m wide at the bottom, and ▽ 474.5m high at the bottom. There are drainage galleries and pumps in the dam. Behind the two dams, there is a 20m long apron and a toothed wall. The water intake adopts the tower type, which is divided into the upper structure and the lower structure. The substructure includes the water inlet passage, trash rack, trash rack breast wall and bulkhead gate shaft; The upper structure includes the water intake operation and maintenance platform, trash rack hoist chamber, hoist working bridge, bulkhead gate hoist chamber and traffic bridge. The elevation of water inlet bottom plate is ▽ 525.80m, and the elevation of maintenance platform is ▽ 578.50m. The headrace tunnel is arranged along the left bank, 600m long, round, 4.2m in diameter, and is lined with full section concrete. The cofferdam type is overflow cofferdam at the upstream and overflow cofferdam at the downstream. The upstream cofferdam shall be constructed by throwing and filling rubble revetment on the upstream face, reinforcing bar gabion slope pressing on the downstream face and anti-seepage with C20 concrete face slab. The downstream cofferdam is filled with earth and stone, and the structure of composite geomembrane seepage prevention is adopted. In order to meet the needs of mechanical construction, flood control and rescue, traffic and slag removal, the top width of upstream and downstream cofferdams is 8.0m. The upstream cofferdam is 14.4m high, the weir top elevation is ▽ 496.70m, and the axis length is 72.15m. The downstream cofferdam is 6.5m high, the weir top elevation is ▽ 486.80m, and the axis length is 31.3m. The diversion bottom outlet is constructed and blocked, and the diversion tunnel is blocked. The two diversion bottom outlets are arranged on the 8 # and 9 # dam monoliths. The elevation of the bottom outlets is 486.40m, and the size of the bottom outlets is 7m × 7m. The bottom outlets need to be plugged finally. The diversion tunnel is blocked with a gate for temporary water retaining, and the length of the plug is 36m. The construction diversion and water flow control works include river closure, drainage, construction of diversion bottom outlet, preparation of diversion bottom outlet and diversion tunnel plugging, flood control and other works, as well as other relevant temporary works. 1.2 Main contract items and quantities Main contract items include: concrete arch dam works, plunge pool works, water intake works, tunnel works. See the following table for main quantities. The construction period of Dukouba Junction Project is scheduled to start in the middle of July 2007, and the main works will be completed on June 1, 2010. Table 1-2 Main Control Duration

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There are many mountain coal caves and mined out areas on both sides of the dam in this project, which are difficult to handle and have an impact on the progress of the main works. Our department will excavate and clean the coal caves and mined out areas in combination with the requirements of the design documents and the actual situation on site, and then carry out backfill concrete and backfill grouting construction. The treatment of coal tunnel and goaf will be combined with the construction roads on both banks, and parallel operation will be carried out along different elevations to reduce the construction period. At the same time, during the excavation of dam abutment, the tunnel construction such as traffic and grouting will be left in the flood season for treatment, so as not to occupy the straight construction period.

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Dukouba Hydropower Station is a hybrid power station located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing. It is the first level of cascade planning of Meixi River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir.

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Topic: Construction organization design of hydropower station project Fire protection design scheme of hydropower station Construction scheme of hydropower station project
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Dukouba Hydropower Station is a hybrid power station located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing. It is the first level of cascade planning of Meixi River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir.

Topic: Construction Contract of Hydropower Civil Works Civil engineering construction organization design Construction organization design of hydropower station project
Dukouba Hydropower Station Dam Civil works Construction Organization Design (2). doc

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Chongqing Dukouba Hydropower Station Dam Complex Civil works Organization design scheme
There are many mountain coal caves and mined out areas on both sides of the dam in this project, which are difficult to handle and have an impact on the progress of the main works. Our department will excavate and clean the coal caves and mined out areas in combination with the requirements of the design documents and the actual situation on site, and then carry out backfill concrete and backfill grouting construction. The treatment of coal tunnel and goaf will be combined with the construction roads on both banks, and parallel operation will be carried out along different elevations to reduce the construction period. At the same time, during the excavation of dam abutment, the tunnel construction such as traffic and grouting will be left in the flood season for treatment, so as not to occupy the straight construction period.

Topic: Fire protection design scheme of hydropower station Chongqing Dadukou Tang Hong Cost of hydropower station
Chongqing Dukouba Hydropower Station Dam Complex Civil works Organize the design of construction scheme
The dam of this project is an arch dam structure, which requires strict temperature control of concrete. In order to do a good job in temperature control of concrete, refrigeration equipment will be established in the concrete mixing system to produce qualified temperature controlled concrete products.

Topic: Construction scheme of hydropower station Construction organization design of hydropower station project Chongqing Dadukou Tang Hong
Dukouba Hydropower Station Dam Complex Civil works Construction organization design proposal (formal)
Dukouba Hydropower Station is a hybrid power station located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing. It is the first level of cascade planning of Meixi River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir. The dam site is located 7km upstream of Xinzheng Township, Fengjie County, 90km away from Fengjie County; The plant is located at the Dalangou of Pingping Town, 54km away from Fengjie County. The main works of construction diversion and flow control of the contract project include: construction and maintenance of upstream and downstream transverse cofferdams; Diversion tunnel, diversion bottom outlet and its inlet and outlet cofferdams; Safe flood prevention and protection works in dam site area; Foundation pit drainage of buildings; Cleaning and recovery of Phase II foundation pit after overflow; Demolition of diversion and water retaining structures; Gate lowering and blocking of diversion buildings.

Topic: Construction scheme for civil works of power station Construction Contract of Hydropower Civil Works Civil engineering construction organization design
Dam pivot of Dukouba Hydropower Station in Zhongyuan District, Zhengzhou Civil works Construction organization design scheme
During the construction, the excavation quality will be guaranteed mainly from the following aspects: surveying and setting out, drilling accuracy, charge amount and charge structure, control blasting, slope protection, blasting monitoring, filling test, etc

Topic: Construction organization design of hydropower station project Fire protection design scheme of hydropower station Construction scheme of hydropower station project
Dam pivot of Dukouba Hydropower Station in a city Civil works Construction organization design scheme
The external transportation conditions of the project are relatively convenient. The project area is 90km away from Fengjie County and 7km away from Xinzheng Township. Fengjie is 119 km upstream from the Yangtze River waterway to Wanxian, 326 km to Fuling, and 446 km to Chongqing; 35 km down to Wushan, 202 km to Yichang, and 2054 km to Shanghai. Water transport conditions are superior.

Topic: Construction organization design of hydropower station project Fire protection design scheme of hydropower station Construction scheme of hydropower station project
Dukouba Hydropower Station Dam in a city Civil works Construction organization design
As the construction site of this section is narrow and small, it is difficult to arrange temporary facilities. In order to facilitate construction, temporary buildings will be arranged in centralized areas. The living camp and processing plant are arranged at the downstream of the right bank, 2km away from the dam site in Zhongjiaping District. The gravel processing system and concrete mixing system are centrally arranged near the upstream dam site on the left bank. The mountain here is relatively gentle, and the amount of site leveling work is relatively small. The centralized layout is also convenient for management. Temporary construction projects such as explosive magazine, air compression station and water pool are scattered in corresponding areas according to construction needs.

Topic: Construction organization design of hydropower station project Construction scheme of hydropower station project Construction Contract of Hydropower Station Project
Dukouba Hydropower Station Dam Civil works Construction organization design proposal
Dukouba Hydropower Station is a hybrid power station located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing. It is the first level of cascade planning of Meixi River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir. The dam site is located 7km upstream of Xinzheng Township, Fengjie County, 90km away from Fengjie County; The plant is located at the Dalangou of Pingping Town, 54km away from Fengjie County. The main structures of Dukouba Hydropower Station include water retaining (discharging) structures, water intake structures, diversion structures and power house, with a total installed capacity of 129MW (2 × 64.5MW). Concrete arch dam is a Grade 3 building. The foundation surface elevation is ▽ 470.00m, the dam crest elevation is ▽ 578.50m, and the maximum dam height is 108.5m. Parabolic variable thickness double curvature arch dam is adopted for its shape. The center angle of the crown is 98 °, the maximum half center angle is 46.76 °, and the minimum half center angle is 26.88 °. The maximum radius of curvature of the arch ring center line at the crown beam is 120.6m, the minimum radius of curvature is 53.4m, and the dam axis is 284.123m long. It is divided into 16 dam sections. The dam crest is 4.5m thick, the bottom is 20.0m thick, and the thickness height ratio is 0.18. Grouting gallery, traffic gallery, sump, pump and vent pipe are set inside the dam body, and grouting adit, drainage tunnel, traffic bridge, dam rear bridge and elevator shaft are set outside the dam. The flood discharge structure is located in the middle of the dam. The center line of the overflow weir coincides with the center line of the dam. It is composed of three overflow surface holes with the size of 12m × 12m (width × height). Each hole is equipped with an arc working gate for control, which is opened and closed by a hydraulic hoist. Weir body adopts WES type weir surface curve, and weir top elevation ▽ 563.00m. The front of weir crest adopts 1/4 elliptic curve, the rear of weir crest adopts curve equation, and the outlet adopts downflow. The maximum discharge is 3840m3/s, and the corresponding unit width flow is 116.4m3/s · m. As an energy dissipation structure, the plunge pool is a Grade 3 structure, including plunge pool, secondary dam and apron. The plunge pool is stepped, 165.53m long, 44m wide at the bottom, 79.44m wide at the top, and 469.0m at the lowest bottom elevation. At the end of the plunge pool, there are two dams with high backwater level. The axis is 66m long, 17.5m high, 2.7m wide at the top, 27.2m wide at the bottom, and ▽ 474.5m high at the bottom. There are drainage galleries and pumps in the dam. Behind the two dams, there is a 20m long apron and a toothed wall.

Topic: Construction scheme for civil works of power station Construction Contract of Hydropower Civil Works Civil engineering construction organization design
Dukouba Hydropower Station Dam Complex Civil works Construction organization design scheme (formal) February 9, 2014 17.55.1.doc

Topic: Construction scheme for civil works of power station Construction organization design of hydropower station project Civil engineering construction organization design
Dam hydroproject of hydropower station Civil works Construction organization design
XX Hydropower Station is a hybrid power station, located in the upstream reach of XX River in XX Township, XX County, XX City. It is the first level of cascade planning of XX River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3,

Topic: Construction organization design of hydropower station project Fire protection design of hydropower station project Construction scheme of hydropower station project
Dukouba Hydropower Station Dam Complex Civil Works/Project Construction Organization Design (formal)
Dukouba Hydropower Station is a hybrid power station located in the upper reaches of Meixi River, Xinzheng Township, Fengjie County, Chongqing. It is the first level of cascade planning of Meixi River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3,

Topic: Construction organization design of hydropower station project Cost of hydropower station Three Gorges Hydropower Station
Civil Construction Design Scheme of Dukouba Hydropower Station Dam Complex (formal)
3) For curtain grouting, XY-2 geological drill equipped with hydraulic percussive rotary drilling tool is used, and diamond drill bit is used to make holes. KXP-1 inclinometer is used to conduct full hole tracking and deviation measurement, and correct deviation in time to ensure that the deviation value of hole deviation meets the design requirements; If the correction is invalid, the original hole shall be scrapped and re drilled as instructed by the Supervisor. 4) The core acquisition rate of curtain grouting reaches more than 90%, and the core shall be recorded as required and the results shall be submitted to the Supervisor.

Topic: Fire protection design scheme of hydropower station Construction scheme of hydropower station Cost of hydropower station
Dam hydroproject of hydropower station Civil works Construction organization design
Concrete arch dam is a Grade 3 building. The foundation surface elevation is ▽ 470.00m, the dam crest elevation is ▽ 578.50m, and the maximum dam height is 108.5m. Parabolic variable thickness double curvature arch dam is adopted for its shape. The center angle of the crown is 98 °, the maximum half center angle is 46.76 °, and the minimum half center angle is 26.88 °. The maximum radius of curvature of the arch ring center line at the crown beam is 120.6m, the minimum radius of curvature is 53.4m, and the dam axis is 284.123m long. It is divided into 16 dam sections. The dam crest is 4.5m thick, the bottom is 20.0m thick, and the thickness height ratio is 0.18. Grouting gallery, traffic gallery, sump, pump and vent pipe are set inside the dam body, and grouting adit, drainage tunnel, traffic bridge, dam rear bridge and elevator shaft are set outside the dam.

Topic: Construction organization design of hydropower station project Cost of hydropower station Three Gorges Hydropower Station
Dam hydroproject of hydropower station Civil works Construction organization design
The hydropower station is a hybrid power station, which is located in the upstream reach of XX River in XX Township, XX County, XX City. It is the first level of cascade planning of XX River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir. The dam site is located 7km upstream of XX Township, XX County, 90km away from XX County; The plant is located at XX Ditch, XX Town, 54km away from XX County.

Topic: Construction organization design of hydropower station project Construction scheme of hydropower station project Construction Contract of Hydropower Station Project
Hydropower dam Civil works Construction organization design
Xx Hydropower Station is a hybrid power station, located in the upper reaches of xx River in xx Township, xx County, xx City, which is the first level of cascade planning of xx River. The dam site area controls a drainage area of 765km2, with an average annual flow of 18.2m3/s. The power station is a Grade III medium-sized project mainly for power generation, with comprehensive benefits such as tourism and flood control. The total storage capacity of the reservoir is 98.54 million m3, and the effective storage capacity is 70.11 million m, which is an annual regulation reservoir. The dam site is located 7km upstream of xx Township, xx County, 90km away from xx County; The plant site is located at the Dalangou of Pingping Town, 54km away from xx County. The main structures of xx hydropower station project include water retaining (discharging) structures, water intake structures, diversion structures and power house. The total installed capacity of the power station is 129MW (2 × 64.5MW). Concrete arch dam is a Grade 3 building. The foundation surface elevation is ▽ 470.00m, the dam crest elevation is ▽ 578.50m, and the maximum dam height is 108.5m. Parabolic variable thickness double curvature arch dam is adopted for its shape. The center angle of the crown is 98 °, the maximum half center angle is 46.76 °, and the minimum half center angle is 26.88 °. The maximum radius of curvature of the arch ring center line at the crown beam is 120.6m, the minimum radius of curvature is 53.4m, and the dam axis is 284.123m long. It is divided into 16 dam sections. The dam crest is 4.5m thick, the bottom is 20.0m thick, and the thickness height ratio is 0.18. Grouting gallery, traffic gallery, sump, pump and vent pipe are set inside the dam body, and grouting adit, drainage tunnel, traffic bridge, dam rear bridge and elevator shaft are set outside the dam. The flood discharge structure is located in the middle of the dam. The center line of the overflow weir coincides with the center line of the dam. It is composed of three overflow surface holes with the size of 12m × 12m (width × height). Each hole is equipped with an arc working gate for control, which is opened and closed by a hydraulic hoist. Weir body adopts WES type weir surface curve, and weir top elevation ▽ 563.00m. The front of weir crest adopts 1/4 elliptic curve, the rear of weir crest adopts curve equation, and the outlet adopts downflow. The maximum discharge is 3840m3/s, and the corresponding unit width flow is 116.4m3/s · m. As an energy dissipation structure, the plunge pool is a Grade 3 structure, including plunge pool, secondary dam and apron. The plunge pool is stepped, 165.53m long, 44m wide at the bottom, 79.44m wide at the top, and 469.0m at the lowest bottom elevation. At the end of the plunge pool, there are two dams with high backwater level. The axis is 66m long, 17.5m high, 2.7m wide at the top, 27.2m wide at the bottom, and ▽ 474.5m high at the bottom. There are drainage galleries and pumps in the dam. Behind the two dams, there is a 20m long apron and a toothed wall. The water intake adopts the tower type, which is divided into the upper structure and the lower structure. The substructure includes the water inlet passage, trash rack, trash rack breast wall and bulkhead gate shaft; The upper structure includes the water intake operation and maintenance platform, trash rack hoist chamber, hoist working bridge, bulkhead gate hoist chamber and traffic bridge. The elevation of water inlet bottom plate is ▽ 525.80m, and the elevation of maintenance platform is ▽ 578.50m. The headrace tunnel is arranged along the left bank, 600m long, round, 4.2m in diameter, and is lined with full section concrete. The cofferdam type is overflow cofferdam at the upstream and overflow cofferdam at the downstream. The upstream cofferdam shall be constructed by throwing and filling rubble revetment on the upstream face, reinforcing bar gabion slope pressing on the downstream face and anti-seepage with C20 concrete face slab. The downstream cofferdam is filled with earth and stone, and the structure of composite geomembrane seepage prevention is adopted. In order to meet the needs of mechanical construction, flood control and rescue, traffic and slag removal, the top width of upstream and downstream cofferdams is 8.0m. The upstream cofferdam is 14.4m high, the weir top elevation is ▽ 496.70m, and the axis length is 72.15m. The downstream cofferdam is 6.5m high, the weir top elevation is ▽ 486.80m, and the axis length is 31.3m. The diversion bottom outlet is constructed and blocked, and the diversion tunnel is blocked. The two diversion bottom outlets are arranged on the 8 # and 9 # dam monoliths. The elevation of the bottom outlets is 486.40m, and the size of the bottom outlets is 7m × 7m. The bottom outlets need to be plugged finally. The diversion tunnel is blocked with a gate for temporary water retaining, and the length of the plug is 36m. The construction diversion and water flow control works include river closure, drainage, construction of diversion bottom outlet, preparation of diversion bottom outlet and diversion tunnel plugging, flood control and other works, as well as other relevant temporary works.

Topic: Construction organization design of hydropower station project Construction Contract of Hydropower Civil Works Construction organization design of line civil works
Hydropower project Civil works Construction organization design
Xxxx Hydropower Station is located on the xx main stream in xxxx County, which is the upper cascade power station of the proposed xxxx Hydropower Station. There is a special railway line from xx to xx Mountain Mine along the river bank in the project area. The hub is located at the downstream side of xx Station on the special railway line from xx to xx Mountain Mine, about 73km north of xx City; The plant site is located about 3.6km upstream of xx station on xx special railway line, with a design water head of about 189m and a total installed capacity of 52.8MW (3 × 17.6 MW). It belongs to Class III medium-sized project. The main buildings are Level 3 buildings, the secondary buildings are Level 4 buildings, and the temporary buildings are Level 5 buildings. The power station is composed of hydroproject, diversion and power generation tunnel, surge shaft, penstock, ground powerhouse and other buildings.

Topic: Construction organization design of hydropower station project Construction scheme of hydropower station project Construction Contract of Hydropower Station Project
Shiyazi Hydropower Station Dam Civil works construction plan
In the construction scheme of Shiyazi Hydropower Station dam civil engineering, the diversion tunnel works take the diversion tunnel excavation construction as the main line, and through reasonable planning of the construction period of earthwork, tunnel excavation, concrete pouring, foundation treatment and other related projects, the construction parts and processes are closely linked to meet the corresponding control construction period goals

Topic: Construction scheme for civil works of power station Construction Contract of Hydropower Civil Works Construction scheme of reservoir and hydropower station project
Hydropower dam Civil works Technical scheme of construction survey
This data is the technical scheme for construction survey of dam civil works of hydropower station, 17 pages in total. Introduction: The project is of Grade II, and the scale of the project is large (2) type. The main buildings such as water retaining structures, water release structures and power plant buildings are of Grade II, and the structural safety level of corresponding hydraulic structures is of Grade II; Secondary buildings are Grade 3 buildings, and the structural safety level of corresponding hydraulic structures is Grade II. The main works of the contract include: ① water retaining and release structure works (non overflow dam sections on the left and right banks, flood gate dam sections); ② Power house works; ③ Gate slot embedded parts, grounding and other electrical embedded parts works (flood gate service gate and emergency gate); ④ Trash detention and floating works in the reservoir area; ⑤ Access road works.

Topic: Electromechanical technology of hydropower station Estimate of hydropower project Cost of hydropower station
A dam of a hydropower station in Hubei Civil works Construction organization design
Content introduction 1.1 Project overview 1.1.1 Geographic location A hydropower station project is located in a township of Enshi City, on the Mashui River, a primary tributary on the left bank of the Qingjiang River. The project is 7.5km away from the mouth of the Qingjiang River, which is the most downstream cascade of the Mashui River. The construction site is 84km from the left bank to Enshi via sandy land, and 45km from the right bank to Enshi via Sancha. 1.1.2 The project characteristic hub focuses on power generation, taking into account the comprehensive benefits of shipping, breeding, etc. The scale of the project is large (2), and the project grade is second class. The main building dam is a Grade I building, and other permanent buildings such as spillway, water diversion system and power house are Grade II buildings. The normal pool level of the reservoir is 480.0m, the maximum storage capacity of the reservoir is 220.4 million m3, the total installed capacity of the power station is 2 × 4.5MW, and the design quotative flow of the power station is 138.6m3/s. Mashui River is the largest tributary on the left bank of Qingjiang River. The whole drainage area is 1709km2, the river length is 102km, the average gradient of the main stream is 5.15 ‰, and the channel width is generally 40-60m. In the basin, the mountains are high and steep, the valleys are deep and the rivers are narrow, the water flow is rapid, and the drop is large. It is a mountain stream river, and the river course is tortuous. The control area above the dam site is 1650km2, accounting for 96.55% of the whole basin. The multi-year average flow at the dam site is 50.5m3/s, the annual runoff is 1.593 billion m3, and the design peak flow once every 100 years is 4850m3/s, and the check peak flow once every 2000 years is 6850m3/s. 1.1.3 The hydroproject layout and main buildings The hydroproject mainly consists of the dam, spillway, emptying tunnel (reconstructed from the diversion tunnel), power generation diversion tunnel, power plant, switch station, power transmission and transformation system, management facilities and other buildings. The dam is a reinforced concrete face rockfill dam. The dam crest axis is 172.5m long, the dam crest is 8.0m wide, the dam crest elevation is 488.0m, the foundation surface elevation of the riverbed toe slab is 391.0m, and the foundation cover layer below the toe slab is impervious with a reinforced concrete anti-seepage wall with a thickness of 0.8m. The maximum dam height is 96.5m (excluding the height of cut-off wall and wave wall). Consolidation grouting is required for toe slab of bank slope and sand gravel section of riverbed. In the foundation area of concrete toe slab and toe wall, the consolidation grouting hole spacing is 3.0m, the row spacing is 1.60m, the hole depth of bedrock section is 6.0m, and the grouting holes are arranged in quincunx shape; The maximum depth of sand gravel consolidation grouting behind the impervious wall of the riverbed and under the connecting plate is 20m, and the spacing between rows is 4.0m. Curtain grouting is arranged in the middle of toe slab, and the depth is controlled as 5.0m below the relative impermeable layer (q ≤ 3Lu) and below the groundwater level. It is proposed to adopt the orifice sealing method for curtain grouting, small diameter medium and high pressure grouting. The riverbed and both banks are provided with double row curtains, with the hole spacing of 3.0m and the row spacing of 1.60m. The dam abutment is provided with single row curtains, with the hole spacing of 1.5m. The curtain grouting depth of the left and right bank slopes is 88~113m and 88~117m respectively. The riverbed section is 88m, and there is no grouting adit in the middle. The flood discharge structure is an open spillway on the right bank slope controlled by radial gate. The weir crest elevation is 463m, with two holes in total, each with a clear width of 12m and a depth of 20.5m. The spillway is composed of inlet section, gate chamber section, chute section and bucket section, with a total axis length of 185.3m. The power generation headrace tunnel is arranged on the left bank and consists of inlet buildings and headrace tunnels. The inlet elevation of the headrace tunnel is 441.0m, with a total length of 229.40m,. The power generation diversion tunnel has a circular section, the diameter of the completed tunnel is 5.0m, the excavated fault surface is Φ=6.20~8.20m, and the lining thickness is 0.60~1.60m. The powerhouse of the power station is a shore diversion type ground powerhouse. The plane size of the main powerhouse is 47.17 × 37.25 × 41.2m3 (length × width × height), and the unit installation elevation is 393.0m. The switchyard area is 30.17 × 10.2 m2 (length × width), and the ground elevation is 410.0m.

Topic: Construction organization design of hydropower station project Construction scheme of hydropower station project Construction Contract of Hydropower Station Project
The head hydroproject dam of a hydropower station in Wenshan, Yunnan Province Civil works Construction organization design
Content introduction 1.2 Project overview xx Hydropower Station is located on the main stream of Panlong River in Malipo County, Wenshan Prefecture, Yunnan Province. The dam site is 36km away from the highway in Malipo County, 116km away from Wenshan Prefecture, and 447km away from Kunming. The power station is a diversion type power station. The maximum dam height of Phase I project is 40m, the normal pool level is 515.00m, and the corresponding storage capacity is 415 × 104m3; The dead water level is 508.00m, and the corresponding storage capacity is 143 × 104m3; The regulating storage capacity is 272 × 104m3, and the installed capacity is 2 × 50MW. The hydroproject layout is mainly composed of head hydroproject, pressure diversion tunnel, surge shaft, buried pipes and ground powerhouse. The head hydroproject consists of 10 dam sections, including the power station intake, flood discharge and diversion bottom outlet dam section, surface outlet overflow dam section, left and right bank non overflow dam sections. The concrete gravity dam has a crest length of 139.00m, a crest elevation of 518.00m, a crest width of 4~6.5m, a maximum dam height of 40m, and a maximum dam bottom width of 35m. The overflow dam section is 65.5m long, and the bottom outlet (6m × 7m) dam section (with a flat bulkhead gate and an arc type service gate) and the power station intake (4.2m × 4.2m) dam section (41.5m long) are arranged on the right bank, which are both built on weakly weathered granite gneiss; The left bank is a non overflow dam section, 32.00m long, built on weakly weathered granite. The dam body is provided with anti-seepage curtain and drainage, which extends along the dam axis to both banks. The control standard of anti-seepage curtain is 5Lu.

Topic: Construction scheme of head hydroproject Yunnan Construction Contract Budget estimate of Yunnan Province
Hydropower dam Civil works Technical scheme of construction survey
This data is the technical scheme for construction survey of dam civil works of hydropower station, 17 pages in total. Introduction: The project is of Grade II, and the scale of the project is large (2) type. The main buildings such as water retaining structures, water release structures and power plant buildings are of Grade II, and the structural safety level of corresponding hydraulic structures is of Grade II; Secondary buildings are Grade 3 buildings, and the structural safety level of corresponding hydraulic structures is Grade II. The main works of the contract include: ① water retaining and release structure works (non overflow dam sections on the left and right banks, flood gate dam sections); ② Power house works; ③ Gate slot embedded parts, grounding and other electrical embedded parts works (flood gate service gate and emergency gate); ④ Trash detention and floating works in the reservoir area; ⑤ Access road works.

Topic: Electromechanical technology of hydropower station Estimate of hydropower project Cost of hydropower station
Hydropower dam Civil works Construction organization design
Concrete arch dam is a Grade 3 building. The foundation surface elevation is ▽ 470.00m, the dam crest elevation is ▽ 578.50m, and the maximum dam height is 108.5m. Parabolic variable thickness double curvature arch dam is adopted for its shape. The center angle of the crown is 98 °, the maximum half center angle is 46.76 °, and the minimum half center angle is 26.88 °. The maximum radius of curvature of the arch ring center line at the crown beam is 120.6m, the minimum radius of curvature is 53.4m, and the dam axis is 284.123m long. It is divided into 16 dam sections. The dam crest is 4.5m thick, the bottom is 20.0m thick, and the thickness height ratio is 0.18. Grouting gallery, traffic gallery, sump, pump and vent pipe are set inside the dam body, and grouting adit, drainage tunnel, traffic bridge, dam rear bridge and elevator shaft are set outside the dam.

Topic: Construction organization design of hydropower station project Cost of hydropower station Three Gorges Hydropower Station
Dam of a hydropower station Civil works Roller compacted concrete construction method
This data is the construction method of roller compacted concrete for the dam civil engineering of a hydropower station, and its contents are for reference only

Topic: Cost of hydropower station Three Gorges Hydropower Station Jinping Hydropower Station
A hydropower project in Gansu Civil works Tender Document
The xxxx Tiecheng Hydropower Station Project is located in xx County, xx Province, downstream of xx, about 172km away from xx City. The right bank of the river section is the provincial highway 301 (Minmen Highway), which is very convenient for external transportation. Tiecheng Hydropower Station focuses on power generation and adopts a mixed development scheme. A diversion hub is built near the 62km of the xx301 highway to raise the xx water level to 2072.5m, and then the pressure tunnel is used to divert water to the Zhizhipai power house for power generation. The project belongs to Grade III medium-sized project. The main buildings are designed as Grade 3, and the secondary buildings and temporary buildings are Grade 5. The power station is composed of water diversion hub, pressurized water diversion system, power house, booster station and other buildings, with a total installed capacity of 51.5MW and an average annual power generation of 174 million kW. h.

Topic: Cost of hydropower station Three Gorges Hydropower Station Jinping Hydropower Station