Engineering database \ Special Scheme for Construction of Jianfengding Tunnel

Special Scheme for Construction of Jianfengding Tunnel

Peak peak Tunnel It is a long highway tunnel, and the left and right lines are laid separately. The left line tunnel at Jianfengding starts and ends at LK104+715 ～ LK105+849, with a length of 1134m; the right line tunnel at Jianfengding starts and ends at RK104+711 ～ RK105+864, with a length of 1153m. The portal sections at both ends are set with small clear distance. The small clear distance mileage at Jiangmen end of the left line is LK104+715 ～ LK104+884, with a length of 169m; the Luoding end is LK105+644.5 ～ LK105+849, with a length of 204.5m; the small clear distance mileage at Jiangmen end of the right line is RK104+711～RK104+891.5， The length is 180.5m, and the Luoding end is RK105+680 ～ RK105+864, with a length of 184m. The portal at Jiangmen end is of end wall type, and the portal at Luoding end is of bamboo cutting type.

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Special Scheme for Tunnel Entry Construction of Jianfengding Tunnel - Figure 1

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Special project for safety construction of tunnel engineering programme
1) Establish a level by level responsibility system for safety production centered on the post responsibility system, with clear system, individual responsibility, clear rewards and punishments, and full-time safety engineers. 2) While preparing the construction plan, prepare detailed safety operation procedures, rules, systems and practical safety technical measures, distribute them to the work team, and organize the implementation one by one. 3) Before the start of each process, a detailed construction scheme and implementation measures shall be made. After being submitted to the supervising engineer for approval, the construction technology and safety technology disclosure shall be done in a timely manner, and supervision and inspection shall be carried out during the construction process. The special type of work shall be employed with certificates strictly. 4) Carry out regular and irregular safety inspection, and timely discover and solve unsafe potential accidents. 5) Adhere to the safety learning system of safety day every Monday. Strictly implement the shift handover system, and adhere to the "three work system" activities of safety before work, safety inspection during work, and safety evaluation after work. 6) Personnel engaged in special operations such as blasting, electric power, work at heights and lifting operations, operators of various machines and motor vehicle drivers must receive professional training from the labor department and obtain a certificate after examination before they can operate independently with a certificate. 7) Strengthen the management of the requisition, transportation, use and return of blasting materials, and prohibit the loss of blasting materials. At the same time, communication equipment, alarm devices and fire and lightning protection facilities shall be set. 8) Regularly organize safety inspection of electromechanical equipment and vehicles. The safety problems found in each inspection shall be investigated and handled according to the principle of "four not letting go", and preventive measures shall be formulated to prevent mechanical accidents. 9) All safety articles such as safety helmets, safety nets, safety belts, etc. must be inspected by relevant departments before use.

Topic: Special construction scheme for tunnel construction Special scheme for safe and civilized construction Special scheme for safe construction of steel structure
Hunan Guangxi Railway Tunnel Through Construction Project programme
Xx Tunnel is located in xx Township, xx County, xxxx City, close to xx Expressway. There are few villages, and the mountain is deeply cut. It is a mountainous area with heavy hills, so the traffic is very inconvenient. The entrance mileage is DK415+602, the exit mileage is DK421+889, and the total length is 6287m. The tunnel is 517m of Grade V surrounding rock, 1515m of Grade IV surrounding rock, and 4255m of Grade III surrounding rock. It is the longest tunnel along the whole line, and is the control project of our bid section. The tunnels are located in straight lines. The longitudinal slope of the tunnel is herringbone slope. The longitudinal slope from the 2 # cross tunnel to the exit is - 4 ‰. The distance from the large mileage direction of the 2 # cross tunnel to the exit is 1728m.

Topic: Construction scheme for road connection Special construction scheme for railway tunnel construction Technical Guide for Railway Tunnel Construction
Special project for tunnel construction in winter programme
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Topic: Special scheme for concrete construction in winter Special construction scheme Special construction scheme for tunnel construction
Special project for tunnel portal construction programme
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Topic: Special construction scheme for tunnel portal Special Scheme for Expressway Tunnel Construction Special scheme for reinforcement construction
Matoushan Tunnel Blasting Construction Project programme
Matoushan Tunnel is located in the east of Fanshi County, Xinzhou City, Shanxi Province and the south of Lingqiu County, Datong City. It is designed as a left and right separate tunnel. The total length of the right line tunnel is 1789m, the mileage stake number of the entrance section is YK344+027, and the mileage stake number of the exit section is YK345+816. The maximum burial depth of the tunnel is about 232m, which is located at YK344+969. The left line tunnel is 1686m long. The entrance section mileage stake is ZK344+028, and the exit section mileage stake is K345+768. The maximum burial depth of the tunnel is about 236m, which is located at ZK345+061. The overall trend of the tunnel is 244 °.

Topic: Special construction scheme for tunnel blasting construction Special Scheme for Expressway Tunnel Construction Construction scheme of tunnel horse head gate
Special construction for shallow buried section of tunnel programme
**The railway * * tunnel is designed as a double track tunnel with mixed passenger and freight lines (running double deck containers). The starting and ending mileage of the tunnel is D4K339+026 ～ D4K352+651, with a total length of 13625m. The general burial depth of the tunnel is 100 ～ 400m, and the maximum burial depth is 455m. The tunnel is shallow buried at D4K342+620 ～+645 and D4K343+095 ～+150. The minimum burial depth is about 10m above the vault. The initial risk of landslides in these two sections is "high".

Topic: Special construction scheme for tunnel construction Special scheme for reinforcement construction Special scheme for highway construction
Yulasi Tunnel Concrete Lining Construction Project programme
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Topic: Special construction scheme for tunnel construction Special scheme for reinforcement construction Special scheme for highway construction
Special document of bamboo cutting tunnel construction
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Topic: Special construction scheme for railway tunnel portal Construction technology of tunnel portal Overall construction scheme of tunnel portal
River crossing tunnel shield arrives at the tunnel entrance programme
The total length of the shield tunnel in this project is 3532.442 single track meters, of which the east line is 1765.478m long and the west line is 1766.924m long. The outer diameter of the segment is 11.3m, the inner diameter of the segment is 10.3m, the thickness of the segment is 50cm, and the ring width is 2m. The general wedge ring is divided into blocks in the form of "6+2+1", assembled in staggered joints, and connected with high-strength bolts in the longitudinal and circumferential directions. The shield tunnel is driven by two Φ 11.68m slurry balance shield machines with a length of 11.71m. The two shield machines are excavated from the shield working shaft in Jiangnan (Xiaoshan side) to Jiangbei (Hangzhou side). The longitudinal slope of the eastern line of the tunnel arrival section is 3.25%, and the longitudinal slope of the western line is 3.1%. On the line plane, the western line tunnel is a straight line section, and the eastern line tunnel is at R=1500m On the circular curve, the diameter of the portal of the arrival section is 12.1m. The shield tunnel in the arrival section is driven along Qingchun East Road in Hangzhou towards the Jiangbei working shaft. The ground above the tunnel is mainly the road surface of Qingchun East Road and the green belt along the line.

Topic: Shield construction scheme for river crossing tunnel Construction scheme for tunnel entrance Special construction scheme for tunnel entry
Entry of Badi Tunnel programme (Revised)
Pinggu A1 contract section is located in Pingnan County, starting from the north of Badichengguan and connecting with the Badi connecting line of Ningwu Expressway. The route passes through Badichengguan, Badi, Badi and Bandou in Pingnan County, and ends at Zheyang Village, Gantang Town, where the contract section ends at K12+600. The total length of the contract section is 12.6 km. It mainly includes bridge, tunnel and subgrade works. Badi Tunnel, the left line is 891m long, starting and ending stake numbers are ZK8+024 ～ ZK8+915; The right line is 861m long, and the starting and ending stake numbers are K8+025 ～ K8+886.

Topic: Construction scheme for tunnel entrance Construction Scheme for Shallow Buried Tunnel Entry Special construction scheme for multi arch tunnel entry
Special construction for tunnel entry of Section 7 of Chaohui Expressway programme (New 2)
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Topic: Construction Scheme for Tunnel Entry of Expressway Special construction scheme for tunnel entry Special construction scheme for multi arch tunnel entry
Special Construction for Tunnel Exit Entry of New Taiyuan Jiaozuo Railway programme
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Topic: Special Construction Scheme for Railway Tunnel Entry Special construction scheme for new tunnel Special construction scheme for tunnel exit
Special construction of partition wall in tunnel engineering programme
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Topic: Special construction scheme for tunnel construction Special scheme for reinforcement construction Special scheme for highway construction
Special construction of separated short tunnel programme
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Topic: Construction Scheme of Highway Separated Tunnel Special construction scheme for separated interchange Special construction scheme for tunnel construction
Tunnel shield jumbo hoisting construction programme
The hoisting scheme of this project is prepared according to the actual site conditions, strictly in accordance with the scope of hoisting works and the construction requirements of the General Contractor. Under the principle of unified deployment of personnel, machinery, construction scheme, quality requirements, schedule, safety and civilization, it is composed of transportation and hoisting disciplines.

Topic: Special construction scheme for shield hoisting Special construction scheme for tunnel trolley Special construction scheme for tunnel second lining trolley
Special project for safety construction of tunnel engineering programme (China Railway)
Strengthen the management of the requisition, transportation, use and return of blasting materials, and prohibit the loss of blasting materials. At the same time, communication equipment, alarm devices and fire and lightning protection facilities shall be set.

Topic: Special construction scheme for tunnel middle partition China Railway Special Construction Scheme China Railway Safety Construction Scheme
Special construction for highway tunnel construction programme Reference template
This data is a reference model of special construction scheme for highway tunnel construction, with 26 pages in total, which is detailed and can be used for reference.

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Special safety for separate highway tunnel construction programme
This document is a special safety plan for the construction of separated highway tunnels, totaling 26 pages. It is designed as a separate tunnel, crossing the mountain from northeast to southwest. The left tunnel KH148+713 ～ KH152+520 is 3807m long, and the right tunnel KG148+710 ～ KG152+507 is 3797m long, with a maximum burial depth of 390m. The natural slope at the entrance of the tunnel has a gradient of 300 ～ 400, and the slope surface is covered by Quaternary strata. No bedrock is exposed. Crops are planted on the mountain, and the vegetation is relatively developed; The portal is located in the piedmont slope zone, and the slope is basically stable.

Topic: Construction Scheme of Highway Separated Tunnel Special construction scheme for separated interchange Tunnel construction safety scheme
Special project for construction of secondary lining works of railway tunnel programme
The starting and ending mileage of Bayan Chagan Tunnel is DK3+867 ～ DK7+110, with a total length of 3243m. It is a double track tunnel with a maximum burial depth of about 203m. Except that the exit section of the tunnel is located on the curve of R=2000, the rest of the tunnel is located on the straight section, and the longitudinal slope inside the tunnel is+4.8 ‰, - 3 ‰ herringbone slope.

Topic: Special construction scheme for railway tunnel construction Special construction scheme for tunnel secondary lining Special construction scheme for secondary structure construction
Shield driven construction of a tunnel entry section programme
When the shield enters the tunnel, the plane curve of a tunnel is R1055m right curve, with a slope of 4.24%, and the shield top is covered with 6.674m soil. According to the geological survey report, the geological conditions of the tunnel entering section from top to bottom are: fill, brown yellow~grayish yellow silty clay, gray mucky silty clay, gray clayey silt, gray mucky clay, gray clay; Among them, the shield will cross grey mucky silty clay, grey clayey silt, grey mucky clay and grey clay at the tunnel entry section. The plane size of Pudong receiving shaft is 36.4m × 21.0m, the measured transverse diameter of the portal is 11.75m, the measured vertical diameter is 11.74m (design diameter is 11.75m), and the measured center elevation of the portal is -8.548m (design center elevation of the portal is -8.524m).

Topic: Construction Scheme for Tunnel Entry in Shallow Buried Section Construction scheme of shield tunnel Construction technology of shield tunnel entering into water
Special construction for tunnel entry of Section 7 of Chaohui Expressway programme (New 2)
The Yinshan Tunnel is located in the Yinshan area in the south of Hepa Town, Jiexi. It is a medium low mountain landform with large fluctuations. The maximum ground elevation of the top of the mountain is 182m, the lowest elevation of the entrance is 102m, and the maximum elevation difference is about 84m. The tunnel entrance is located on the curve, the left and right line entrances are located on the right turning circular curve of R-6000, and the exit is located on the left turning circular curve of R-6000. The layout type is a separate tunnel, with the starting and ending stake numbers of the left line ZK98+062~ZK98+655 and the length of 593m; the right line K98+045~K98+575 and the length of 535m. Yinshan Tunnel is a tunnel with unfavorable geology, the portal end is shallow buried and the bias pressure is serious, which is the key (key) and difficult project of this section.

Topic: Construction Scheme for Tunnel Entry of Expressway Special construction scheme for tunnel entry Special construction scheme for multi arch tunnel entry
Special Project for Construction of Sanchading Tunnel in the 12th Contract Section of Jiangmen Luoding Expressway in Guangdong Province programme
The tunnel is located in a low mountain and hilly area, with a ground elevation of about 235~558m and a relative height difference of about 323m. The tunnel crosses the mountain in a nearly east-west direction, with steep terrain and developed mountain vegetation.

Topic: Special construction scheme for tunnel entry Special scheme for highway construction Special Scheme for Expressway Tunnel Construction
Subway shallow buried large-span tunnel excavation programme
The designed starting and ending mileage of the section from a station to a street station is DK14+281.175 ～ DK15+198.250, with a total length of 917.075m, which is arranged in east-west direction along Shiyiwei Road. Shiyiwei Road is the main urban traffic road, with seven one-way roads and a reverse bus lane, and the road traffic is very congested; High rise buildings are densely distributed on both sides of the road, and the buildings are close to the tunnel; The underground pipe network in the section is dense, including sewage, precipitation, water supply, telecommunications, power, gas, optical cable and other pipe networks. The sewage and precipitation pipelines are above the excavation section. During construction, support should be strengthened to reduce the impact of ground subsidence on the pipeline; According to the data provided in the survey report, the surrounding rock that the tunnel passes through in this section is Grade I, and the stratum that the tunnel passes through in this section is mainly gravel sand and round gravel, and all of them are in confined water, which is easy to collapse. The section structure is a horseshoe shaped section. The longitudinal line presents a downward single slope from west to east, with a maximum longitudinal slope of 2.5%. Crossovers, parking lines and connecting lines are set in front of a major street station in the section. The line tunnel section consists of single track single tunnel, double track single tunnel and other sections.

Topic: Construction scheme for tunnel entrance Special construction scheme for multi arch tunnel entry Construction Scheme for Shallow Buried Tunnel Entry
Inclined shaft entry of a tunnel of Chongqing Lijiang Railway programme

1 Project overview A tunnel is a double track tunnel, which is designed according to the design speed of 200Km/h and meets the passenger and freight mixed line standard for running double deck container trains. The 2 # inclined shaft is located on the right side of the DK244+100 line in the forward direction, and the plane angle between the inclined shaft and the middle line of the tunnel left line in the large mileage direction is 55? The comprehensive gradient is 7.77%, and the maximum gradient is 8.6%. The horizontal length of the inclined shaft is 570m, and the inclined length is 571.89m. The inclined shaft adopts single lane trackless transportation. Shotcrete anchor mesh support is adopted for the inclined shaft. 16 I-beams are added to the Class V surrounding rock section, 12.6 I-beams are added to the Class V surrounding rock wellhead section, 35cm thick lining concrete is poured to the Class V surrounding rock wellhead section, and there is no secondary lining in other mileage sections. 　

Topic: Tunnel entry construction Railway Tunnel Drawing Railway tunnel design
Fengshuoling Tunnel Left Left Tunnel Entry programme
Fengshunling Tunnel: the starting and ending stake numbers of the right tunnel are YYK67+240~YYK68+105, and the length is 865m; Left tunnel ZZK67+170.00~ZZK68+026.00, with a total length of 856m, is a middle tunnel. The separated double tunnel layout is adopted. The entrance and exit of the right tunnel are respectively on the horizontal curve and straight line with the border of 4300, and the entrance and exit of the left tunnel are respectively on the straight line and the horizontal curve with a radius of 2000 meters; The longitudinal slope of the right tunnel is 0.7%, and the longitudinal slope of the left tunnel is 1.05%.

Topic: Construction scheme for tunnel entrance Construction Scheme for Coal Seam Section of Huangmaoling Tunnel Special construction scheme for multi arch tunnel entry
Brief Analysis on the Special Project of Formwork Construction programme
The geometric dimension of the formwork is accurate, the seam is tight, the surface is flat, the surface is free of defects, the isolation agent is applied, and the rigidity, strength and overall performance of the skeleton structure are good. After the formwork is processed, it can be used only after passing the trial assembly.

Topic: Analysis of special construction scheme Special construction scheme for formwork construction Special construction scheme for large formwork construction
Special project for safety construction programme twenty trillion and one hundred and forty billion nine hundred and five million one hundred and fifty-five thousand six hundred and forty-eight
The special scheme for safe construction 20140905155648 is rich and detailed, and can be downloaded for reference and study by netizens.

Topic: Special construction scheme Special scheme for safe construction of steel structure Special scheme for concrete construction in winter
Special construction for safe and civilized construction of tunnel programme
The starting and ending pile numbers of the tunnel are 1+736-2+124, and the length of the tunnel is 388m. The internal contour of the tunnel (width × height) is 6.4 × 4.8m, and the structural form is composite lining. The inlet and outlet are end wall portal.

Topic: Special scheme for safe and civilized construction Basis for preparation of safe and civilized construction scheme
Special project for tunnel construction in winter programme (China Railway Construction Corporation)
XX Mountain Tunnel is a single hole double track tunnel with a total length of 6510m. The tunnel entrance and exit mileage are XX+795 and XX+305 respectively. The tunnel entrance and exit light and dark boundary mileage are XX+805 and XX+260 respectively. The entrance of XX Mountain Tunnel to XX+681.635 is located on a curve with a radius of 7000m, and the exit of XX+681.635 is located on a straight line. The longitudinal slope of the tunnel is single downhill, and the longitudinal slope is 3.0 ‰. The tunnel adopts CRTSI type double block ballastless track, and the track structure height is 515mm (from the top surface of the inner rail to the bottom surface of the support layer). The entrance adopts the straight cut portal, and the exit adopts the oblique cut hat brim portal. The tunnel is provided with bilateral drainage ditches and central drainage ditches, and the central drainage ditch is provided with a water outlet at the nearby entrance. Three inclined shafts are set at XX+150, XX+000 and XX+700 of the tunnel, with the length of 525m, 838m and 210m respectively.

Topic: Special scheme for concrete construction in winter China Railway Special Construction Scheme Special construction scheme
Special project for tunnel construction in winter programme (China Railway Construction Corporation
XX Mountain Tunnel is a single hole double track tunnel with a total length of 6510m. The tunnel entrance and exit mileage are XX+795 and XX+305 respectively. The tunnel entrance and exit light and dark boundary mileage are XX+805 and XX+260 respectively. The entrance of XX Mountain Tunnel to XX+681.635 is located on a curve with a radius of 7000m, and the exit of XX+681.635 is located on a straight line. The longitudinal slope of the tunnel is single downhill, and the longitudinal slope is 3.0 ‰. The tunnel adopts CRTSI type double block ballastless track, and the track structure height is 515mm (from the top surface of the inner rail to the bottom surface of the support layer). The entrance adopts the straight cut portal, and the exit adopts the oblique cut hat brim portal. The tunnel is provided with bilateral drainage ditches and central drainage ditches, and the central drainage ditch is provided with a water outlet at the nearby entrance. Three inclined shafts are set at XX+150, XX+000 and XX+700 of the tunnel, with the length of 525m, 838m and 210m respectively.

Topic: Special scheme for concrete construction in winter China Railway Special Construction Scheme Special construction scheme
Special project for tunnel blasting construction of highway reconstruction project programme
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.

Topic: Special construction scheme for highway tunnel blasting Special Construction Contract for Tunnel Blasting Special construction scheme for highway widening and reconstruction
Special project for tunnel survey construction of highway reconstruction project programme
The Project Management Department of Section TJ-01 of G205 Wuliting Taolin Highway Reconstruction Project is proposed to enter the site for construction on April 1, 2017. Now all preparations have been completed. Our Project Department has prepared a special scheme for tunnel survey construction of this project according to the actual situation of the site, in combination with the requirements of design drawings and construction specifications. Please review and approve it.

Topic: Special construction scheme for tunnel survey Special construction scheme for highway widening and reconstruction Special construction scheme for reconstruction
Special monitoring for the entrance of a high-speed six lane double arch tunnel programme
The tunnel is excavated from the outlet end to the inlet end. Before entering the tunnel, the intercepting ditch at the top of the tunnel shall be constructed. The intercepting ditch can effectively prevent the surface water from scouring the tunnel side and front slopes. The tunnel intercepting ditch shall be more than 3m away from the excavation face of the side and front slopes.

Topic: Construction Scheme of High speed Tunnel Entry Construction scheme of expressway double connected tunnel Special construction scheme for multi arch tunnel entry
Construction of Jiguanshan Tunnel Exit Entrance programme
Jiguanshan Tunnel is located in Chengde City, with a starting and ending mileage of DK189+492 ～ DK194+888, and a total length of 5396m. It is a single hole double track tunnel with a line spacing of 5.0m, and the maximum buried depth of the tunnel is 378m. The longitudinal slope inside the tunnel is a one-way slope, 6 ‰ uphill from the tunnel entrance to DK193+750, and 25 ‰ uphill from DK193+750 to the tunnel exit. The main construction items of Jiguanshan Tunnel exit entrance include: side and front slope excavation, support, intercepting gutter, advanced large pipe shed, concealed tunnel excavation, etc. See Table 2-1 for main quantities.

Topic: Construction scheme for tunnel entrance Construction Scheme of Dazhushan Tunnel Mila Mountain Tunnel Construction Scheme
Auxiliary construction of Aiba tunnel entry pipe shed construction programme
Aiba Tunnel is designed as a separate long tunnel. The left tunnel starts and ends at ZK22+280 ～ ZK23+480, with a length of 1200m and a maximum buried depth of about 142m. The right tunnel starts and ends at YK22+280 ～ YK23+482, with a length of 1202m and a maximum buried depth of about 139m. The tunnel is located in Heping Town, Yanhe County, with a geomorphic type of erosion stripped silty mudstone and a design surrounding rock level of IV The entrance and exit portal shall be end wall portal. Among them, the left width of Grade V surrounding rock at the entrance and exit section is 290m, and the right width is 262m; the left width of Grade IV surrounding rock at the tunnel body section is 900m, and the right width is 930m. The open cut method is used for construction of open cut tunnels, and the NATM method is used for construction of concealed tunnels, which are mainly constructed by circular excavation and reserved core soil method and bench method. Composite lining structure is adopted for lining design. The entrance section of the tunnel is located on a curve and the exit section is located on a straight line; The left tunnel is uphill, the right tunnel entrance and tunnel body section are uphill, and the exit section is downhill. The tunnel is provided with 1 emergency parking area, 1 cross passage for vehicles and 2 cross passages for pedestrians.

Topic: Construction scheme for tunnel entrance Construction Scheme of Tunnel Fault Pipe Shed Construction Scheme of Tunnel First Pipe Shed
Tunnel entry construction of a subway section programme
The line of a subway section is north-south, starting from the north end of a subway station. The subway line runs from south to north below the Zhongqiao Road to XXX Park Station. The Zhongqiao Road is currently a green space, and the section is within XXX Park. The main buildings on both sides of the line are various stadiums to be built. The section is a horseshoe shaped section, with composite lining and bench method excavation. Two construction shafts are set on the left and right lines of the section, and the center mileage of 1 # construction shaft on the left line of the section undertaken by our company is K1+950; The center mileage of 1 # construction shaft on the right line is K1+980, and the shaft is located on the main line.

Topic: Construction scheme for tunnel entrance Waterproof construction scheme of section tunnel Construction scheme of metro section tunnel
Construction of tunnel subway shield machine entering the tunnel programme
The project uses a Komatsu earth pressure balance shield machine to advance from the East Ring Road Station along the left line to the Xingming Street Station, and the shield machine turns around to advance from the Xingming Street Station along the right line to the East Ring Road Station. After the second breakthrough, the project uses two Komatsu earth pressure balance shield machines to advance from the East Ring Road Station to the Cangjie Station along the left and right lines, and ends after the breakthrough.

Topic: Construction Scheme of Metro Shield Tunnel Construction scheme for tunnel entrance Special construction scheme for tunnel entry
Hunan Guangxi Railway Tunnel Through Construction Special Document
This plan is prepared according to the construction drawings of Tube xx Tunnel and on-site safety protection requirements, mainly including the construction organization and arrangement, drilling and blasting design, construction safety and relevant technical measures of XX Tunnel exit and 2 # cross tunnel.

Topic: Construction scheme for road connection Technical Guide for Railway Tunnel Construction Special construction scheme for railway tunnel
Special document for tunnel construction in winter
XX Mountain Tunnel is a single hole double track tunnel with a total length of 6510m. The tunnel entrance and exit mileage are XX+795 and XX+305 respectively. The tunnel entrance and exit light and dark boundary mileage are XX+805 and XX+260 respectively. The entrance of XX Mountain Tunnel to XX+681.635 is located on a curve with a radius of 7000m, and the exit of XX+681.635 is located on a straight line. The longitudinal slope of the tunnel is single downhill, and the longitudinal slope is 3.0 ‰. The tunnel adopts CRTSI type double block ballastless track, and the track structure height is 515mm (from the top surface of the inner rail to the bottom surface of the support layer). The entrance adopts the straight cut portal, and the exit adopts the oblique cut hat brim portal. The tunnel is provided with bilateral drainage ditches and central drainage ditches, and the central drainage ditch is provided with a water outlet at the nearby entrance. Three inclined shafts are set at XX+150, XX+000 and XX+700 of the tunnel, with the length of 525m, 838m and 210m respectively.

Topic: Special scheme for concrete construction in winter Special construction scheme for tunnel construction Special construction scheme for greening in winter
Special document for tunnel portal construction
Xx starts at XX and ends at XX, with a total length of 3585m. The tunnel is a double track railway tunnel with a speed of 200km/h for passengers and goods, and the spacing between the inner lines of the tunnel is 4.50m. The tunnel is designed to be 1% uphill. The tunnel is located in the right curvilinear section with R=7000m. Ballast track is paved in the tunnel. The maximum burial depth of the tunnel is about 100m. The stratum lithology through which the tunnel passes is completely weathered~weakly weathered metasandstone mixed with carbonaceous slate, and locally carbonaceous shale glutenite. The entrance and exit of the tunnel adopt 19m hat brim oblique cut portal. The portal works include 2 tunnel entrances and exits, mainly including: portal excavation, portal slope protection, intercepting ditch, portal drainage ditch and portal long pipe shed. The project is planned to be commenced on November 5, 2010 and completed on December 15, 2011; The drainage ditch, grass planting protection and tunnel portal structure are arranged after the open cut tunnel is backfilled.

Topic: Special construction scheme for tunnel portal Safety measures for tunnel portal construction Summary of tunnel portal construction technology