Organization design of river dredging construction in a city

Uploaded on: 2020-07-16 23:57:59 come from: Road and bridge municipal administration / Road and bridge construction design / Construction organization design

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Content introduction 6.1. Project overview 6.1.1 Comprehensive overview Project name: main road drainage pipe and channel desilting service project in ×× City Project location: contract mode in ×× City: lump sum contract for labor, material, quality, safety, tax, etc. 6.1.2. Project characteristics 1. The project is the main trunk road of the place, with many enterprises and intersections along the road, The scope of construction impact is large, such as road traffic, surrounding environment, nearby enterprises, along the road, street residents, etc., and the requirements for civilized construction are high. 2. Due to the large amount of engineering work, the construction task should be completed within the contract period, and a considerable amount of manpower, materials, funds, machinery and technology should be invested in a short time. 3. The project has a large working face and a long route, which brings inconvenience to the deployment and management of construction equipment. According to the actual situation of the site, the construction should be closely coordinated with road traffic operations, with strong management and many coordination departments. 4. The construction period of the project is tight, so the construction will be carried out by sections and zones, and the construction task will be completed as soon as possible to restore traffic. The total construction period will be controlled within the contract period.

Construction organization design of river dredging in a city - Figure 1

Construction organization design of river dredging in a city - Figure 2

Construction organization design of river dredging in a city - Figure 3

Construction organization design of river dredging in a city - Figure 4

Construction organization design of river dredging in a city - Figure 5

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Topic: Construction organization design of new bridges Construction Scheme of River Channel Occupied by Bridge Construction Dadukou Bridge
[Sichuan] Construction organization of river dredging and control project Design
The river under control is 1445m long, with 1626m new embankment and 584m river dredging. The protection area of this project is XX Town, which is the political, economic and cultural center of the town and the supporting service area for Chengdu and Afghanistan. The end point is 80m upstream of the sewage pipeline business street, extending upstream to the planned square. The sewage trunk and branch pipelines extend 450m in total. Most of the old urban areas are rain and sewage rivers, and the antecedent sewage main pipe is only DN500. In this design, three sewage intercepting wells are arranged in combination with intercepting pipes to reduce the drainage pressure of sewage pipes in rainy season.

Topic: Construction organization design of river reconstruction project Construction organization design of landslide control project Construction organization design of land treatment project
Construction organization of dike reinforcement and river channel dredging and diversion works Design
Content introduction 4.1.1.5 Technical measures for trenching construction 1. Construction shall be carried out in strict accordance with the construction specifications. Over excavation shall meet the design requirements, and under excavation shall not be allowed; 2. During excavation, check and measure frequently whether the foundation trench centerline, excavation plane position, horizontal elevation, bench mark slope gradient, etc. meet the construction requirements. 3. The foundation trench excavation shall be carried out in sections from top to bottom in turn, and it is strictly prohibited to carry out construction from bottom to top or by hanging upside down; 4. In case of cracks and sliding signs during excavation, construction shall be suspended immediately and emergency rescue measures shall be taken, and the Supervisor and Designer shall be notified. If necessary, observation points shall be set according to instructions to timely observe slope changes and make records. 5. The available slag and surplus materials in excavation are directly transported to the filling site, and the unusable materials are picked up during filling. 6. Before foundation clearing, the setting out shall be accurate according to the design section to determine the scope of foundation clearing. 4.1.1.6 Installation of lead wire cage 1. When the lead wire cage is transported to the construction site, the construction personnel shall first erect each piece to ensure that each piece is in an accurate position. 2. The four corners of the gabion can be bound with binding wire or metal ring buckle. 3. Use binding wire or metal ring buckle to connect the spacer with the net body. See the following figure for binding requirements. 4. During the installation of lead wire cages in this project, for transportation, the gabions must be folded into a plane, and then placed in an appropriate position to open, and then the stones with the appropriate diameter are put into the cage, the cover is fastened, and then each gabion and the adjacent gabions are tied up. 5. The lead wire cage shall be manufactured according to the standard specifications: the thickness of the cushion shall be from 100 mm to 300 mm, the cage height shall be from 0.5 m to 1 m, and the cage length and width shall be from 1 m to 4 m. The size of lead mesh is from 50X70mm to 120X150mm. The diameter of lead wire used for netting is 2 mm to 4 mm. 6. The larger the wire mesh, the thicker the steel wire used. The thicker lead wire is used around the edge, and each lead cage must be bound firmly and durable during roof closing. 7. It is not allowed to hook the lead wire mesh only on the edge of the cage. It must be tightly woven on the edge of the cage so that the mesh hook is not loose. Large cages made of steel bars (more than 1m in height) can be welded. 8. The size of the selected stone during filling is between 100 mm and 250 mm, and an error of plus or minus 5% is allowed, that is, the maximum size of the stone shall not exceed 300 mm and the minimum size shall not be less than 100 mm. 9. In order to adapt to the shape of the stone, if there is a cut gabion, care should be taken to ensure that the gabion re bound after cutting is also solid. 10. In the gabion mesh box (lead wire cage), better stones shall be placed at the periphery to avoid filling the center with inferior stones, and to prevent stones with poor shape from squeezing the surface of the gabion and being washed away by water. 11. The filling stone shall be as good as possible, and the stone shall be squeezed tightly in the cage. Prevent the lead wire from being worn due to the friction between stones.

Topic: Structure reinforcement construction organization design Construction organization of bridge reinforcement Smoke control construction organization design scheme
Construction organization of dike reinforcement and river channel dredging and diversion works Design
Content introduction 4.1.1.5 Technical measures for trenching construction 1. Construction shall be carried out in strict accordance with the construction specifications. Over excavation shall meet the design requirements, and under excavation shall not be allowed; 2. During excavation, check and measure frequently whether the foundation trench centerline, excavation plane position, horizontal elevation, bench mark slope gradient, etc. meet the construction requirements. 3. The foundation trench excavation shall be carried out in sections from top to bottom in turn, and it is strictly prohibited to carry out construction from bottom to top or by hanging upside down; 4. In case of cracks and sliding signs during excavation, construction shall be suspended immediately and emergency rescue measures shall be taken, and the Supervisor and Designer shall be notified. If necessary, observation points shall be set according to instructions to timely observe slope changes and make records. 5. The available slag and surplus materials in excavation are directly transported to the filling site, and the unusable materials are picked up during filling. 6. Before foundation clearing, the setting out shall be accurate according to the design section to determine the scope of foundation clearing. 4.1.1.6 Installation of lead wire cage 1. When the lead wire cage is transported to the construction site, the construction personnel shall first erect each piece to ensure that each piece is in an accurate position. 2. The four corners of the gabion can be bound with binding wire or metal ring buckle. 3. Use binding wire or metal ring buckle to connect the spacer with the net body. See the following figure for binding requirements. 4. During the installation of lead wire cages in this project, for transportation, the gabions must be folded into a plane, and then placed in an appropriate position to open, and then the stones with the appropriate diameter are put into the cage, the cover is fastened, and then each gabion and the adjacent gabions are tied up. 5. The lead wire cage shall be manufactured according to the standard specifications: the thickness of the cushion shall be from 100 mm to 300 mm, the cage height shall be from 0.5 m to 1 m, and the cage length and width shall be from 1 m to 4 m. The size of lead mesh is from 50X70mm to 120X150mm. The diameter of lead wire used for netting is 2 mm to 4 mm. 6. The larger the wire mesh, the thicker the steel wire used. The thicker lead wire is used around the edge, and each lead cage must be bound firmly and durable during roof closing. 7. It is not allowed to hook the lead wire mesh only on the edge of the cage. It must be tightly woven on the edge of the cage so that the mesh hook is not loose. Large cages made of steel bars (more than 1m in height) can be welded. 8. The size of the selected stone during filling is between 100 mm and 250 mm, and an error of plus or minus 5% is allowed, that is, the maximum size of the stone shall not exceed 300 mm and the minimum size shall not be less than 100 mm. 9. In order to adapt to the shape of the stone, if there is a cut gabion, care should be taken to ensure that the gabion re bound after cutting is also solid. 10. In the gabion mesh box (lead wire cage), better stones shall be placed at the periphery to avoid filling the center with inferior stones, and to prevent stones with poor shape from squeezing the surface of the gabion and being washed away by water. 11. The filling stone shall be as good as possible, and the stone shall be squeezed tightly in the cage. Prevent the lead wire from being worn due to the friction between stones.

Topic: Embankment construction organization design Construction Scheme for River Diversion Construction organization design of municipal river engineering
Construction organization of dredging works in the whole river Design model
1. The Liede Chung desilting project (Guangzhou Shenzhen Railway - Pearl River Mouth Section) is about 4.291 kilometers long, and the section of the existing Chung is the narrowest 6.6 meters and the widest 44 meters. 2. Design desilting section: the section of the existing surge is the design section, and the cross slope at the bottom of the surge is 0. 3. This dredging is only for excavation, not for filling.

Topic: Model of project construction organization design Construction organization design of comprehensive river training project 2015 Construction Organization Design Model
River dredging construction organization Design Word version (117 pages in total)
River channel dredging construction organization design The main construction content of this project: river bottom dredging (including sludge transport and special treatment of sludge), etc. The project dredging 22000 cubic meters. During dredging, a longitudinal drainage ditch shall be dug on one side outside the sludge to return the water to the channel. Earth is piled on the edge of the trough to form a ridge, so that a small amount of water is drained through the trough. The silt shall be cleaned from top to bottom or from bottom to top.

Topic: Construction organization design of river reconstruction project Construction and organization design Construction organization design
[Anhui] Construction organization of urban river dredging project Design
Content introduction This project is mainly a 12.39 km river dredging construction project. The total amount of desilting in the project design is 45000 m3. The length of the land mud pipeline is about 2700 m. It is difficult to lay the pipeline. It must cross the pilot crossing with a width of about 300 m at the estuary. Construction waste is scattered along both sides of the desilting river. The height difference of the river embankment is large, and the construction of waste cleaning is difficult. The main quantities of this project include construction waste cleaning, garbage, dredging, etc. [Main contents of river dredging project construction] 1. Cleaning and outward transportation of construction waste; 2. Hydraulic dredging of silt; 3. Construction of transmission pipeline and transmission route; 4. Cofferdam filling construction of slurry collection tank; 5. Intercept water backflow; 6. Construction of cofferdam for mud storage in spoil area. [Main construction technical scheme for river dredging] 1. Use manual inspection to clean up plant debris and collect them for centralized treatment; 2. After the surface construction waste is cleared and transported, the silt blocks are washed and excavated by hydraulic power in sections; 3. The water drained from the slurry collection tank is discharged into the diversion channel through the drainage ditch, and is directly pumped by the high-pressure clean water pump as the flushing and excavation circulating water. The insufficient water is still pumped from Jiajiang River to supplement; 4. 8 ″ hard nylon pipe specially used for mud pump is used for some pipelines for mud transportation in the site; Flexible flange joint is adopted; Pipeline transportation is adopted for off-site mud transportation; 5. The filling of the mud collection tank is excavated to a depth of 1.5m below the river bottom by the dredger in the river near the bank, and the tank is constructed into a roughly central inverted platform shape to facilitate the sedimentation and concentration of mud. The filling diameter is about 20m; Cofferdam shall be filled with straw bags filled with soil; 6. A 1m × 0.8m drainage ditch or intercepting ditch is set at the bottom of the river 3m away from the cofferdam on the side of the river to return the seepage, overtopping and bleeding water to the diversion ditch (2m × 1.5m) for flushing and excavation construction pumping for reuse.

Topic: Construction organization design of river reconstruction project Anhui Project Construction Contract Anhui residential building construction organization design
Construction organization of river dredging project in Datong Town Design .pdf

Topic: Construction organization design of river reconstruction project Project construction organization 10 kv project construction organization design
River dredging and desilting construction organization Design
This project is the expansion and dredging project of the Santang Hengjiang River (Songpu Zhenlongpu) in the east of Cixi City. It is one of the key construction projects in Cixi City. Located in Donghe District, it consists of the Santang Hengjiang River, a horizontal confluence channel, and the local reach of the Longpu Town, a longitudinal drainage channel, with a total length of 8980m, of which the Santang Hengjiang River is 60m wide and 7880m long, and the newly excavated Longpu Town section is 50m wide and 1100m long, The old river channel is dredged, and the whole line on both banks of the river channel is paved with stones for slope protection. The design drainage standard is: the 20-year return period, 3-day rainstorm, and 4-day drainage are completed; the main buildings of the project are designed according to the Class III standard, and the secondary buildings are designed according to the Class IV standard

Topic: Technical disclosure of river dredging construction River dredging construction machinery and equipment Method statement for earthwork excavation in river dredging
Reservoir channel dredging construction organization Design
This document is the organization design of reservoir channel dredging construction, which was prepared in 2014 and has 79 pages in total. Project overview: Six 2.2kW submersible pumps are proposed to be equipped for the construction water of this project to pump water from nearby water sources, which will be used as water for concrete and mortar mixers, concrete precast blocks, mortar masonry curing and machinery after being purified in the storage tank. The production facilities of the project mainly consider concrete mixing system, prefabrication system and stockyard. The concrete mixing system includes precast concrete and on-site mixing construction, which can be seen in the layout plan; According to the actual situation of the project, the liquidity setting is adopted for site construction.

Topic: Construction organization design channel Channel reinforcement construction Channel construction in winter
[Jiangsu] Port road dredging construction organization Design
[Jiangsu] Port road dredging construction organization design

Topic: Construction organization design of high-rise residential buildings in Jiangsu Jiangsu Construction Contract Construction organization design
[Sichuan] Construction organization of river dredging and control project Design
The project is located in XX Town section of XX River. The river section under control starts from XX Bay (river channel stake No. 0+700.0) and ends at 120m downstream of XX Street Bridge (river channel stake No. 2+145.0). The length of the river channel under control is 1445m, the new embankment is 1626m, and the river channel is desilting 584m. The protection area of this project is XX town, which is the political, economic and cultural center of the town and the supporting service area for Chengdu and Afghanistan. The end point is 80m upstream of the sewage pipeline business street, extending upstream to the planned square. The sewage trunk and branch pipelines extend 450m in total. Most of the old urban areas are rain and sewage rivers, and the antecedent sewage main pipe is only DN500. In this design, three sewage intercepting wells are arranged in combination with intercepting pipes to reduce the drainage pressure of sewage pipes in rainy season.

Topic: Construction organization design of landslide control project Construction scheme of river regulation works Construction scheme of a river regulation project
Construction scheme for river dredging and muck transportation
This project is the second bid section of the first phase of the comprehensive treatment of the trunk stream of Longgang River, located in Longcheng Street, Longgang District, Shenzhen. The total length of the river is 1530m, the stake number is H0-150 ～ H1+380, and the design river section width is about 40m. Main buildings include: main sewage intercepting box culvert on the right bank 3.5 × 2.5m, 1527.27m long; 1.2 × 1.8m sewage intercepting box culvert on the left bank, 1447.19m long; 2 # river crossing pipe DN1000 double row and reinforced concrete connecting well; Concrete retaining wall, box culvert dry masonry slope protection, left and right bank patrol road, bank slope landscape works, etc.

Topic: Construction scheme for river earthwork excavation and outward transportation Construction Scheme for Soil Cofferdam of River Bridge Construction Scheme for Outward Transport Elevator Foundation