Special Construction Scheme for Xiaoqi Tunnel Entry

Uploaded on: 2020-09-20 23:23:15 come from: Road and bridge municipal administration / Road and bridge construction design / Construction organization design

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The project is Zhangzhou Hua'an Section of Zhangzhou Yong'an Connecting Line of the expressway network in the economic zone on the west side of the Taiwan Straits. The starting point of the contract section (A9) is located in Hulin Township, Hua'an County. The starting point is K63+246.000, and the starting point is on the separated subgrade. After setting up the Xiaoqi Tunnel, it reaches the end point of the project K67+195.696, which connects with the starting point of Longyan Section of Zhangzhou Yong'an Connecting Line, The total length of the contract section is 3.95km (the left line is 3915m long and the right line is 3947m long). The design speed of the whole line is 80km/h, two-way four lane. The tunnel is covered with silty clay, and the underlying bedrock is tuff lava and tuffaceous sandstone. Grade III surrounding rock is 4510m, Grade IV surrounding rock is 1965m, Grade V surrounding rock is 937m, and the tunnel portal is 50m.

Special Construction Scheme for Xiaoqi Tunnel Entry - Figure 1

Special Construction Scheme for Xiaoqi Tunnel Entry - Figure 2

Special Construction Scheme for Xiaoqi Tunnel Entry - Figure 3

Special Construction Scheme for Xiaoqi Tunnel Entry - Figure 4

Special Construction Scheme for Xiaoqi Tunnel Entry - Figure 5

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Topic: Special construction scheme for safety of open cut tunnel Construction scheme of tunnel opening works Tunnel portal construction scheme
Special safety construction of tunnel excavation and support programme
Huiyaozi Tunnel is located near Huiyaozi Village, Jianchang County, and extends in the northeast direction. It is two separate one-way curve tunnels, with the left line of 1000m long and the right line of 1005m long. It is a long tunnel. The specific stake numbers are located in ZK3+020 ～ K4+020 (left line) and K2+985 ～ K3+990 (right line). The longitudinal sections of the openings at both ends of the left and right lines of the tunnel are located on convex vertical curves, and the middle sections are located on straight sections; The longitudinal slope of the straight slope section of the left line tunnel body is -2.05%, and the longitudinal slope of the straight slope section of the right line tunnel body is -2.06%. The maximum buried depth of the tunnel is about 112m.

Topic: Special construction scheme for excavation and support safety Tunnel support and excavation construction scheme Tunnel excavation and support construction scheme
Special construction of Xinlian tunnel excavation project programme
Xinlian Tunnel is the longest tunnel on the line, which is the key project and control project of the bid section. The tunnel is located between Yangzong and Kunming. The terrain fluctuates greatly. The ground elevation is 1790~2300m, the relative height difference is 530m, the natural slope is 15~35 °, and the vegetation is developed locally. The tunnel entrance mileage is D2K720+765, the exit mileage is D2K733+695, the total length is 12930m, the maximum burial depth is about 470m, the tunnel exit section is shallow, the minimum burial depth of the vault is about 5m, which is a shallow burial section.

Topic: Special construction scheme for tunnel excavation works Construction Scheme for Shield Driving of Undercut Tunnel Construction Scheme for Cofferdam Diversion of Undercut Tunnel
Special construction of tunnel initial support programme
This contract is the XXXXXXXXXXXXXXXXXXXXXXXXXX contract section, with a total length of 7.113km. XX tunnel is a separate tunnel. The starting and ending stakes of the right line are K64+252 ～ K67+162, with a total length of 2910m, including 1670m for Grade III surrounding rock, 930m for Grade IV surrounding rock, and 310m for Grade V surrounding rock; The left line starts from ZK64+248.9 to ZK67+194, with a total length of 2945.1m, including 1670m for Grade III surrounding rock, 950m for Grade IV surrounding rock, and 325.1m for Grade V. The portal is end wall type. The project area belongs to the continental monsoon climate of sub humid middle temperate zone, with four distinct seasons. The rain and heat are in the same season. The monsoon is significant, and the water flow is greatly affected by the seasons. The annual evaporation in this area is 1838.7mm, the annual average sunshine is 2800-2900h, and the frost free period is 150d. The meteorological conditions cause the short effective construction period every year.

Topic: Special construction scheme for tunnel initial support Summary of tunnel initial support construction Special construction scheme for shotcrete anchor support
Special waterproof and drainage construction of Qiling Tunnel programme
The new Qiling Tunnel of Ganzhou Shenzhen Railway is located in Xiaojinkou Street, Huizhou City, Guangdong Province. The entrance and exit mileage of the tunnel is respectively DK354+520 ～ DK354+846, with a total length of 326m. The boundary mileage of the light and dark tunnels is respectively DK354+576 and DK354+811. The entrance and exit of the tunnel are hat brim oblique cut portal (entrance L=18m, exit L=18m). Bias pressure cutting type open cut tunnel is adopted for the inlet and outlet. (2) The plane and vertical sections of the tunnel from the tunnel entrance DK354+520 to the exit DK354+846 are located on the left deflection curve. The one-way uphill gradient of the tunnel is 7.1236 ‰.

Topic: Special construction scheme for tunnel waterproof and drainage Special technical disclosure of tunnel waterproof and drainage Special construction scheme for typhoon prevention
Special construction of Guangshan Tunnel programme -- Latest
The starting and ending stakes of Lot 4 of Jin Hong Expressway are K30+700-K49+540, of which the starting stake of the left line of Guangshan Tunnel 4 is ZK28+662, the ending stake is ZK33+145, and the length is 4483m. The starting stake of the right line is ZK28+642.94, the ending stake is ZK33+105, and the length is 4462.06m. It is a two hole three lane separated tunnel. Our construction includes K30+700-K33+145 section. The left line is 2445m long and the right line is 2405m long. The entrance (tunnel exit) is located in Chunhe Town, Yuxi City. The longitudinal slope of the section where the tunnel is located is -1.400%, and the maximum burial depth of the tunnel is about 158m.

Topic: The latest special construction scheme of high-speed tunnel Contents of tunnel special construction scheme Special construction scheme for karst tunnel
Laodingshan Tunnel - monitoring measurement - special construction programme
Laodingshan Tunnel is located from Shanmen Village to Xiaoluo Village in the suburb of Changzhi City, Shanxi Province. The tunnel entrance is located in Laodingshan Shanmen Village in the suburb of Changzhi City, Shanxi Province. The terrain is flat, with the entrance mileage of DK214+030. The tunnel exit is located in Xiaoluo Village, the suburb of Changzhi City, Shanxi Province. The terrain is flat, with the exit mileage of DK217+471, the gap mileage of DK217+471.54. The total length of the tunnel is 3441m, and the maximum burial depth is 85m, It is located at DK215+450 ～ DK215+620 with a ground elevation of 1060m. The traffic at the entrance and exit mileage of the tunnel is convenient. The tunnel passes through Shanmen Village, Erlongshan Village, Jijiazhuang Village and Xiaoluo Village. The tunnel entrance is shallowly buried, and the tunnel body passes through new loess and old loess. The new loess is yellowish brown, slightly dense, upright, macroporous and collapsible. Old loess, brown yellow, hard hard plastic, containing gravelly soil, coarse round gravel and ginger stone. The engineering geological conditions are general, and the overlying soil layer is thin.

Topic: Special construction scheme for tunnel monitoring and measurement Tunnel construction monitoring Tunnel monitoring lighting construction scheme
Special blasting safety construction of multi arch tunnel programme
The Sanmenwan Bridge and Link Expressway Project in Zhejiang Province starts from Xiangshangang Bridge, starting at K46+912.043 and ending at K101+405.299, connecting Taizhou Bay Bridge in Zhejiang Province, with a total length of 54.493km. This section is the standard, with the starting and ending mileage from K62+330 to K67+700, and the total length of 5.37km. There are two tunnels in the bid section: Laochashan Tunnel and Daaoling Tunnel. Laomaoshan Tunnel K63+480-K63+698, two-way four lane tunnel, 218m long, 56797m? Tunnel excavation?; Daaoling Tunnel K66+098-K66+335, two-way six lane tunnel, 237m long, 79660m? Tunnel excavation?. The total blasting volume of tunnel is 136457m?.

Topic: Special safety construction scheme for tunnel blasting Special Construction Contract for Tunnel Blasting Blasting construction scheme of tunnel body
Special construction of tunnel excavation programme
Xinwu Tunnel passes through structural denuded hills. The starting and ending mileage of the left line tunnel is ZK83+926 ～ ZK86+427, with a length of 2501m. The portal at the inlet end is of bamboo cutting type. The design elevation of the portal at the outlet end is 354.471, and the portal at the outlet end is of bamboo cutting type. The design elevation of the portal is 296.948m, the gradient is - 2.3%, and the maximum burial depth of the tunnel is about 226.3m; The starting and ending mileage of the right line tunnel is K83+938 ～ K86+390, with a length of 2452m. The portal at the inlet end is of bamboo cutting type, with a design elevation of 354.196m. The portal at the outlet end is of bamboo cutting type, with a design elevation of 297.8m, a slope of - 2.3%, and a maximum burial depth of 218.4m.

Topic: Special construction scheme for tunnel Special construction scheme for mud and water inrush tunnel
Special construction of tunnel secondary lining programme
This contract is the XXXXXXXXXXXXXXXXXXXXXXXXXX contract section, with a total length of 7.113km. XX tunnel is a separate tunnel. The starting and ending stakes of the right line are K64+252 ～ K67+162, with a total length of 2910m, including 1670m for Grade III surrounding rock, 930m for Grade IV surrounding rock, and 310m for Grade V surrounding rock; The left line starts from ZK64+248.9 to ZK67+194, with a total length of 2945.1m, including 1670m for Grade III surrounding rock, 950m for Grade IV surrounding rock, and 325.1m for Grade V. The portal is end wall type. The project area belongs to the continental monsoon climate of sub humid middle temperate zone, with four distinct seasons. The rain and heat are in the same season. The monsoon is significant, and the water flow is greatly affected by the seasons. The annual evaporation in this area is 1838.7mm, the annual average sunshine is 2800-2900h, and the frost free period is 150d. The meteorological conditions cause the short effective construction period every year.

Topic: Special construction scheme for tunnel secondary lining Special construction scheme for secondary structure Construction Scheme of Tunnel Secondary Works
Caiguanying Tunnel Special Construction programme --Latest
Jinning Hongta District Expressway is an important part of the infrastructure construction of Kunming and Yuxi. The implementation of the project makes the road networks of Kunming and Yuxi more perfect. It is one of the important regional road networks of the two cities, an important part of Yuxi Ring Expressway, and an important section of Kunming Moxi Expressway. The starting point of the expressway route is K0+000, located in Lihe Village, southwest of Jinning County, Kunming City, and connected to the southwest section of Kunming Ring Expressway (Anjin Expressway); The end point of the route (K49+540) is located in Feijing Village, Yuxi City. The main line is constructed according to the two-way six lane standard, with a design speed of 100Km/h and a subgrade width of 33.5m; The connecting lines of interchanges are constructed according to the standards of Class I highway, with a design speed of 60km/h and a subgrade width of 23.0m; The design loads of bridges and culverts are highway Class I, and other technical indicators are in line with the specified values in the Technical Standards for Highway Engineering (JTGB01-2003) issued by the Ministry.

Topic: The latest special construction scheme of high-speed tunnel Latest special construction scheme for formwork Template of the latest special construction scheme