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Special construction scheme for tunnel step method plus temporary inverted arch temporary cross bracing method, 1685m long The starting and ending mileage of hand climbing rock tunnel is DK128+160 ～ D2K129+845, with a total length of 1685m. It is a double track tunnel, and D2K129+036.030 ～ D2K129+845 is located on the right deviation curve of R-9000. The tunnel is constructed from both ends. The entrance is constructed on the reverse slope and the exit is constructed along the slope. Tunnel lining adopts composite lining -
Special construction scheme for tunnel entry The entrance of XXX tunnel is located in XX Town, XX County, XX Province. The maximum buried depth of the tunnel is 588m. The rock in the deep buried section (more than 490m) is squeezed under the action of high ground stress, which is prone to rockburst, which is adverse to tunnel construction. XXX tunnel entrance is designed as a 100km/h double track tunnel, and the inner contour adopts "Tunnel (civil engineering and ventilation) SIVF-1-1" -
Special construction scheme for multi arch tunnel This data is the special construction scheme of multi arch tunnel, and the content is shown for the reference of netizens. -
Special Construction Scheme for Lujiaba Tunnel Entry Lujiaba Tunnel 1 is located about 600m south of Xuantan Village, Jiangkou Town, Liuba County, Hanzhong City. The tunnel is designed as separate left and right tracks. The left line tunnel is 230.00m long, with the entrance chainage of ZK146+060 and the exit chainage of ZK146+290; Right line tunnel entrance stake number YK146+020, exit stake number YK146+290 -
Special Construction Scheme for Xiaoqi Tunnel Entry 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, with the starting stake number of K63+246.000, and the starting point is on the separated subgrade. After setting up the Xiaoqi Tunnel, the project ends at K67+195.696, which connects with the starting point of Longyan Section of Zhangzhou Yong'an Connecting Line. The contract section is complete -
Special Construction Scheme for Tongyan Tunnel Entry by CD Method This project is the Zherong Fu'an Expressway Section of Shenhai Highway double track. The contract section (A9) is located in Fu'an City, starting from K70+840.000 and ending at K79+700.000. The total length of the contract section is 8.86km. The design speed of the whole line is 80km/h, two-way four lane, separated double tunnel layout, and the machine body at the entrance of the left and right tunnels -
Special construction scheme for blasting safety of multi arch tunnel 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. -
Special construction scheme for hand climbing rock tunnel The starting and ending mileage of hand climbing rock tunnel is DK128+160 ～ D2K129+845, with a total length of 1685m. It is a double track tunnel, and D2K129+036.030 ～ D2K129+845 is located on the right deviation curve of R-9000. The tunnel is constructed from both ends. The entrance is constructed on the reverse slope and the exit is constructed along the slope. Tunnel lining adopts composite lining -
Final special construction scheme for Shuidun tunnel entry The entrance of Shuidun Tunnel is located in the southwest of Qunfeng Village, Shuidun Town, Zijin County, with X170 County Highway nearby, about 350m away from the tunnel entrance; The tunnel exit is located at the south side of Changlin, Rongshu Village, Shuidun Town, Zijin County, about 200m away from the county road. The overall trend of the tunnel is nearly east-west, and the entrance section is slightly arc-shaped to the south. Among them, the 120m range of tunnel entrance section is small spacing tunnel, and the rest are separated -
[Fujian] Special construction scheme for a tunnel According to the requirements of the Code for Design of Highway Tunnels (JTG D70-2004), in order to facilitate the connection between the left and right tunnels and the rescue and escape in case of accidents, a transverse passage should be set between the separated left and right tunnels. In case of fire and other accidents in the tunnel, the left and right tunnels are mutual rescue and escape routes. There are 3 cross passages for vehicles and 12 cross passages in the xx tunnel of the contract section -
Construction Scheme for Entrance of Dalashan Tunnel The engineering geological conditions at the entrance are generally poor. The temporary side invert excavation can be sloped at 1:1.5, and the measures of supporting before entering the tunnel can be taken. The surrounding rock at the entrance section is Grade V. The excavation method is double side heading method, and large pipe shed+anchor bolt support is adopted. -
Special safety construction scheme for tunnel Special safety construction scheme for tunnel -
Special construction scheme for tunnel ventilation There are four tunnels in this contract section, namely Wubixi Tunnel (819m), Aiping Tunnel (892m), Xikouwei Tunnel (629m) and Xiucun Tunnel (2724m). 1) Wubixi Tunnel is a separate tunnel with curved section. The horizontal curve radius of the left line is 1490 meters, and the right line is 1400 meters. The stake number at the entrance of the right track is YK154+461 -
Special construction scheme for tunnel entry The portal is a small clear distance section (the minimum clear distance is 25.82m) with separated tunnel body. The headroom of the tunnel is 14.75 × 5.0m. The left line of the starting and ending stake numbers is ZK340+815 ～ ZK341+032, 217m long; The right line YK340+763 ～ YK340+994 is 231m long and unfolds at 90 °; Left line of entrance design elevation 24 -
Special construction scheme tunnel blasting Hexi Tunnel is located in Xiuning County, Huangshan City, Anhui Province. The tunnel is low on both sides and high in the middle. The terrain fluctuates greatly, with the highest elevation of about 535m. The landform is dominated by middle and low mountains. The vegetation along the line is mainly young trees, shrubs and weeds, which grow densely. The cultivated land is mainly alluvial land with a small amount of dry land. -
Construction scheme of a multi arch tunnel Construction scheme of double arch tunnel Construction scheme of double arch tunnel Construction scheme of double arch tunnel Construction scheme of double arch tunnel -
Special construction scheme for blasting of a tunnel The Mashan Tunnel starts from Yangfantian Village, Houzhai Town, Yiwu City, Zhejiang Province and ends at Maodianqiao Village, Houzhai Town, Yiwu City. The starting and ending mileage of the Mashan Tunnel is K312+680 ～ K316+269 (DK114+900 ～ DK118+489), with a total length of 3589m and a maximum burial depth of 244m. Mashan Tunnel is adjacent to the existing Yiwu Tunnel of Shanghai Kunming Railway, and the entrance end is -
Construction Scheme for Wenxin Tunnel Entry Wenxin Tunnel 1 is a separate tunnel. The tunnel length and portal pile number are shown in the following table: -
Special construction scheme for 3-5km tunnel Shigushan Tunnel is located near Jintao Town, Nan'an City. The starting and ending stakes are ZK7+643 ～ ZK13+648 (6005m long) on the left and YK7+647 ～ YK13+652 (6005m long) on the right. The tunnel and A2 section are divided at the left line ZK10+480 (the right line YK10+500) for about half of their construction -
Special construction scheme for tunnel karst The tunnel is located in Zezhou County, Jincheng City, with the entrance mileage of DK302+700 and the exit mileage of DK316+121, with a total length of 13421m. The plane position of Jueshan tunnel line is shown in the figure below. -
Special construction scheme for highway tunnel Catalog 1. Tunnel overview 3. Overall construction scheme of tunnel works 3. Construction of portal and open cut tunnel works 4. Advance large pipe shed support construction 9. Advance conduit support construction 13. Advance anchor rod construction 15. Tunnel excavation 15. 8. Initial support 24. Invert arch and floor construction 31. 10. Waterproofing and -
Special construction scheme for gas tunnel Yan'an Tunnel is located from Jianhua Town, Ansai County, Yan'an City, Shaanxi Province to Liangcun Township, Baota District, Yan'an City. The nearby villages are Shegou Village, Sanglinwan Village, Jianhua Town, Zhangjiagou Village and Sigou Village, Liangcun Township. The tunnel entrance mileage is DK305+100, the exit mileage is DK314+298, the total length of the tunnel is 9198m, and the maximum burial depth of the tunnel is 228.3m. Our work area undertakes Yan'an -
Special construction scheme for mountain tunnel The construction of Hangzhou Zizhi Tunnel (Zijingang Road Zhijiang Road) Civil Engineering Lot II is mainly composed of four parts, namely, the main tunnel, the south ramp, the ramp connection road and the tunnel management room. The main tunnel is K1+530~K3+550 on the west line of tunnel 1 #, with a length of 2020m, and K1+570~K3+555 on the east line of tunnel 1 #, with a length of 1 -
Construction Scheme for Changtian Tunnel Entry The tunnel entrance is located on the slope of Changtian Nanshan Mountain in the south of Changtian Village. The slope vegetation is developed, including bamboo forest, pine and cypress. There is a stream at the foot of the slope with a flow of about 2000m3/d. The slope body is covered with thick silty clay, about 20m thick, underlain by strongly - moderately weathered tuff. The rock mass joint fissures are developed in a very thick shape, with good caveability. The tunnel exit is located at the distance from the county road Huangsi Highway -
Special construction scheme for tunnel invert secondary lining The length and form of the tunnel, and the main surrounding rock grade. The vehicle crosswalk and pedestrian crosswalk are arranged. Tunnel construction clearance, height of construction clearance. Tunnel construction clearance of emergency parking area, height of construction clearance. Construction clearance of crosswalk. Clearance of pedestrian crossing tunnel. -
Special construction scheme for tunnel lighting This project is: the 2017 Rural Road Safety and Life Protection Project in Wencheng County (Yihua Line Xiekou Tunnel, Wenqing Road Daxueling Tunnel, Guangming Tunnel, Lishan Tunnel Lighting Energy Saving Reconstruction). -
Special construction scheme for safety of multi arch tunnel This section starts at K106+500 and ends at Maja Medium Bridge. The mileage of the end is K111+900, with a total length of 5.4km. Including 190m of Cidu Tunnel 1 (106+510~106+700), 340m of Cidu Tunnel 2 (106+905~107+245), and Ligapan Tunnel (K111+450~ -
Special construction scheme for tunnel safety The special construction scheme for tunnel safety, a very comprehensive special construction scheme for tunnel safety, is worthy of reference. -
Special Construction Scheme for Tunnel Undercrossing Community The right line of the main line of an interval tunnel crosses the 23 # building section of xx community on the side. The support parameters are: Ф 42 advance small conduit to advance the reinforcement of the 150 ° range of the tunnel crown. The circumferential spacing is 0.3m, the longitudinal spacing is 3.0m, and the external angle is 10-20 °. Seamless steel pipe with outer diameter of Ф 42mm, wall thickness of 3.5mm and length of 3.5m shall be adopted. The front end of the steel pipe is tapered -
Special construction scheme for highway tunnel penetration Tuliling Tunnel of Phase I Highway Reconstruction Project of Heishidu Daoshichong Section of Provincial Highway 318 is a single hole two-way road tunnel. The highway class is Class II highway. The mileage of the tunnel is K33+725 ～ K35+863, with a length of 2138m. It is located on a curve without superelevation. The radius of the circular curve is 600m and 1000m respectively. Double sided slopes are used. The longitudinal plane of the tunnel is two-way -
Construction scheme of tunnel inverted arch lining YK91+158.5~YK91+120 at the exit of the right line of XX North Tunnel is Class V surrounding rock with inverted arch. I20a I-beam is used for the initial support of inverted arch, with a longitudinal spacing of 75cm and 26cm thick C25 shotcrete; 50cm thick C30 formwork reinforced concrete is used for inverted arch lining, and C15 rubble concrete is used for inverted arch backfilling; Prefabricated C2 -
Special construction scheme for tunnel with unfavorable geology Two tunnels are arranged in this contract section, namely XX tunnel (the second half) and XX tunnel (the first half). 1. XX Tunnel is a four lane expressway tunnel with left and right lines separated, located in the east of XX Village, XX Township, XX County, XX Province. The starting and ending stake number of the left line of the tunnel is ZK+130-ZK4+725, with a total length of 595m, which belongs to a medium stone tunnel. Right line -
Special Construction Scheme for Golsi Tunnel Golsi Tunnel is a two-way super long single hole tunnel, and the parallel tunnel is provided with a through parallel heading (referred to as horizontal heading for short) as a ventilation duct and rescue channel. The main tunnel mileage is 2770m from K11+900 to K14+700, and the parallel pilot tunnel mileage is 2787m from PK11+913 to PK14+700. The total length of the double tunnel is 5557m. Tunnel setting 3 -
Special construction scheme tunnel blasting (1) K25+561 ～ K25+750 (189m of Grade V surrounding rock) The surrounding rock is mainly eluvial silty clay, strongly and moderately weathered tuff and fault fracture zone. The engineering property of silty clay is poor. The lithology of strongly weathered tuff is soft, and the lithology of moderately weathered rock is hard. Affected by faults, the rock mass is broken~extremely broken. The groundwater type is mainly bedrock fissure water, and the water volume is poor -
Special construction scheme for shallow buried tunnel The starting point of Lot II of Huandao Road (Aoshan Road Gaodian No. 2 Road Section) Project is under Haidi Road, and the ending point is connected to the left and right auxiliary roads of Xinglin Bridge in the direction of Chang'an Road. The stake number range is ZK1+738 ～ ZK2+870, YK1+740～YK2+892.270， The total length of the line is 1.152km. The tunnel works of this project are the control works of the whole project, -
Special construction scheme for tunnel secondary lining The tunnel is designed according to the principle of the New Austrian Tunneling Method, and the structure is a composite lining type composed of anchor, mesh, shotcrete and steel arch frame, which combines the initial support with the secondary formwork concrete; C30 waterproof concrete is used for the secondary lining, and the impermeability grade is not less than S8. Ordinary C25 concrete is used for inverted arch. The inner contour of the tunnel main tunnel and emergency parking area is generally in the form of three center circle and curved side wall; Arch wall adopts 1.5mm thick composite type -
Overall construction scheme of double arch tunnel Jinggutan (II) Tunnel is designed as a double track four lane double arch tunnel, with a clear width of (10.25+1.8+10.25) m, a single center circle as the inner contour, a radius of R=5.71m, and a building clearance height of 5.0m. Jinggutan (II) Tunnel starts at K73+157 and ends at K73+620, with a total length of 463m. Lining structure design -
Construction Scheme for Tunnel Entry in Yunnan Province The access road to the tunnel entrance extends from east to west along the existing 113 and 114 township roads. Some sections bypass villages and are newly built. The starting point of the line K0+000 connects with the S222 provincial road near Dahebian Village, Jingdong County. The ending point K12+695 is located in the east of Dalong Village, Jingdong County. The line passes through Shunan Village, Wenha Village and Wenxin Village. The total length of the line is 12.881km (K1+270 -
Special construction scheme for tunnel excavation Jinshan Tunnel belongs to hilly landform with large topographic relief. The natural slope gradient at the entrance and exit is about 23~33 °. The surrounding rock of the tunnel body is tuff lava of Jurassic Nanyuan Formation, which belongs to hard rock. The rock mass is generally relatively complete, which is favorable to the stability of the surrounding rock of the tunnel body. The stability of the surrounding rock of the tunnel portal is poor, so support and detection measures should be strengthened during excavation -
Special Construction Scheme for Nanhan Tunnel Portal Nanhan Tunnel is a separated long tunnel, with the starting mileage of ZK1+810 and the ending mileage of ZK4+220 on the left side, and the total length of 2410m; The right side starts at K1+750 and ends at K4+215, with a total length of 2465m and a total length of 4875m. R1=5.5m clearance lining section is adopted, with inner contour clearance width of 11.0m and clearance height of 7
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one Special construction scheme for multi arch tunnel -
two Special construction scheme for tunnel invert -
three How to construct multi arch tunnel -
four Construction Scheme for Polian Tunnel Entry -
five Construction scheme for tunnel entrance -
six Construction Scheme of High speed Tunnel Entry -
seven Construction Scheme of Tunnel Cross Tunnel Entry -
eight Winter construction scheme for tunnel entry