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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 plan for construction survey of an extra long tunnel According to the characteristics of the project, the project is divided into two construction sections, namely, the tunnel entrance K23+808.000 ～ K26+031.000 is 2.2km of the construction section I, and the tunnel exit K26+031.000 ～ K28+137.000 (terminal point) is about 2.1km of the construction section II. -
[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 -
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 safety construction scheme for tunnel Special safety construction scheme for tunnel -
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. -
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 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 -
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 -
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 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 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 ventilation and air conditioning The air conditioning and ventilation system of Diamond Mansion is composed of air conditioning system, ventilation system, smoke control and exhaust system, air conditioning cold and heat source system and air conditioning water system. The refrigerating machine room serving the central air conditioning is calculated according to the load, and three screw chillers are used in the commercial part, with a single refrigerating capacity of 1800KW; Two screw chillers are used in the hotel, with a single refrigerating capacity of 1230KW -
Special construction scheme for two-way traffic super long single 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 -
Green construction scheme for special construction of tunnel ventilation and dust removal The tunnel of this project is excavated by blasting method, which will produce a large amount of blasting smoke; Trackless mucking is adopted for mucking, and mechanical equipment such as automobiles and loaders will produce a lot of harmful gases. Therefore, we must take effective ventilation and dust prevention measures to ensure fresh air in the tunnel, create a good construction environment, ensure the health of the construction personnel in the tunnel, improve labor efficiency and speed up construction. -
Special Construction Scheme for Ventilation of Yakang Erlang Mountain Tunnel Erlangshan Tunnel of Contract Section C1 of Ya'an Kangding Expressway is located in Changheba Village, Lianglu Township, Tianquan County, Ya'an City, Sichuan Province. Mileage range of Erlangshan Tunnel: left line ZK65+598 ～ ZK72+316.9, right line K65+612 ～ K72+310. Erlang Mountain Tunnel, the left line is 6718.9m long, the right line is 6698m long, and the maximum buried depth is 1392m. -
Detailed construction scheme of tunnel ventilation and dust removal project The proposed tunnel crosses mountains in northwest southeast direction. Both sides of the mountains basically pass along the valley slope. The entrance end is located on the mountain slope inclined to northeast. The terrain is steep, with a gradient of 20 °~30 °; The outlet end is located at the foot of the mountain slope inclined to the southwest, which is the inner edge of the gully riverbed. -
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 Ventilation - Ventilation The overall arrangement idea of the ventilation and air conditioning project is to pay close attention to the prefabrication of air ducts in the early stage and the installation of on-site supports and hangers, closely cooperate with the civil engineering general contractor to do a good job of reservation and embedment, do a good job of the layout detail drawing of the ventilation ducts according to the requirements of the optimized design drawings, and use the mechanized assembly line to complete the prefabrication of the ventilation ducts; Comprehensively consider the mobilization plan and arrangement of ventilation and air conditioning equipment, and seize the opportune moment to finish the assault -
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 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 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 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 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 -
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 -
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 -
Special construction scheme for large deformation of tunnel The inclined shaft work area of Changping Tunnel belongs to the high and middle mountain tectonic denudation landform. The surface is covered with silty clay and breccia soil of slope eluvium with a thickness of 0~8m, and some parts are thicker. The underlying bedrock is Triassic schistose basalt, and some parts are mixed with tuff. The geological structure of the survey area is complex, the neotectonic movement is strong, and the surface is not developed. It is mainly slope groove water, and the groundwater is relatively developed, It is mainly bedrock fissure water, -
Special construction scheme for tunnel excavation (revised) YQZQ-10 The starting and ending mileage of our department is D1K239+355.98~D1K290+554.27, which is located between Goujiang, Zunyi City and Xifeng County, Guiyang City. The main line is 51.198km long. It includes 26 tunnels with a total length of 17545m. It belongs to the central and eastern edge of Yunnan Guizhou Plateau, with an altitude of 800-1000m -
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 safety construction scheme for tunnel There are two tunnels in our department: Xiawangjia Tunnel starts from ZK76+080 to ZK76+475 on the left line, with a total length of 395m; The right line K76+045 ～ K76+502, with a total length of 457m, starts and ends at Mazita Tunnel: the left line ZK77+436 ～ ZK77+650, with a length of 214m, and the right line K77+449 ～ K -
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 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 girder tunnel (revised) The left tunnel of Daliang Tunnel starts at ZK50+895~ZK52+714 and ends at ZK50+895~ZK52+714. It is a long tunnel with a total length of 1819m. The design elevation of the starting point is 1023m, the design elevation of the ending point is 1039m, and the maximum burial depth of the tunnel floor is 144m; The right tunnel starts and ends at YK50+505~YK+52+606, with a total length of 2101m, which is a long tunnel, -
Special construction scheme for low gas tunnel The MHSS-1 bid section of the key control project of the new Mengxi Central China railway coal transport corridor is located in Yanchang County, Yan'an City, with the starting and ending mileage of DK379+531 ～ DK391+427, and the total length of 11.896km. Yangshan Tunnel, as the key control project of this section, is a single hole double track tunnel with a total length of 11.668km
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one Standard for extra long railway tunnels -
two Special construction scheme for ventilation -
three Code for tunnel construction ventilation -
four Special construction scheme for extra long tunnel -
five Study on construction scheme of extra long tunnel -
six Summary of construction technology for extra long tunnels -
seven Standard for super long tunnels of expressways -
eight Special construction scheme for tunnel ventilation