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Summary of Lipifeng Tunnel Construction Technology Lipifeng Tunnel has a total length of 5025m and a maximum buried depth of 380m. It is designed as a single hole double track tunnel. The entrance mileage is DK78+952, and the exit mileage is DK83+977. The tunnel is divided into two working faces to be constructed according to the principle of the New Austrian Tunneling Method (NATM) from the entrance and exit of the main tunnel. The tunnel entrance section is 1140.57m long at R=6000 -
Summary of construction technology of Santaiding Tunnel Santaiding Tunnel is the first tunnel constructed by our company and also the first tunnel constructed according to the "double standard" management requirements. The engineering geological conditions of this tunnel are complex, the construction period is tight, the task is heavy, and the branch company lacks experience in similar engineering construction management. During the construction process, the construction principle of "pipe ahead, short footage, strong support, early closure, and frequent measurement" is adhered to to ensure the safety and order of tunnel construction. this paper -
Summary of construction technology of double arch tunnel This data is a summary of the construction technology of double arch tunnel. The northeast side is close to the tail of Laowuxia Reservoir, and the southwest side has Baiyangchong Small Reservoir. The ground elevation of the tunnel crossing is between 98 and 166 meters, the relative height difference is more than 65 meters, and the north side hill top elevation is 192.70 meters. The mountain vegetation is developed, and the crossing and intervisibility conditions are poor. The content is detailed and worth downloading. -
Technical summary of ventilation scheme for long tunnel construction This data is a technical summary of the ventilation scheme for the construction of long tunnels. The air volume in the tunnel is required to be no less than 3m3 for each person per minute, and no less than 3m3 for diesel equipment kW/min. The content is detailed and worth downloading. -
Construction Technology Summary of Santaiding Tunnel (PPT) Santaiding Tunnel is the first tunnel constructed by our company and also the first tunnel constructed according to the "double standard" management requirements. The engineering geological conditions of this tunnel are complex, the construction period is tight, the task is heavy, and the branch company lacks experience in similar engineering construction management. During the construction process, the construction principle of "pipe ahead, short footage, strong support, early closure, and frequent measurement" is adhered to to ensure the safety and order of tunnel construction. this paper -
Summary of Construction Technology for Shallow Buried Section of Tunnel Portal For the construction of Qiaoergou Tunnel 2 # of Southwest Railway Lot A12 undertaken by our team, due to the influence of tectonic process, it is about 110m away from the nearest major fault in F2 area. Small and medium folds and corrugations of rock stratum are developed, and the surface of rock stratum is severely weathered. Due to the influence of faults, the tunnel portal construction collapsed to varying degrees at the initial stage of mobilization, which aroused our great attention -
Summary of Construction Technology for a Tunnel of Beijing Zhuhai Expressway This data is a summary of the construction technology of a tunnel of Beijing Zhuhai Expressway. The tunnel is constructed by the three heading method of wall first and arch later. The middle heading is 5.8m wide and 6.4m high, with a semicircular arch structure. The middle wall is 2.3m wide reinforced concrete, and the height difference between the top and the middle heading vault is 0.5m. The side heading is 4.71m wide and 6.98m (8.18m) high, with double arc apex structure. Detailed content -
Summary of planting steel bar construction technology in the experimental section of a tunnel top diaphragm This data is a summary of the construction technology of planting steel bars in the experimental section of the top diaphragm of a tunnel. According to the connection design of the top diaphragm of a tunnel and the secondary lining, two rows of Grade II steel bars with a diameter of 2cm and a depth of 20cm need to be implanted at the connection of the new and old concrete with a longitudinal spacing of 25cm. In order to ensure the effect of planting reinforcement and project quality, our project department has constructed a 50m test section -
Summary of shield construction technology for Yuesan section tunnel The construction technology summary of Yuesan section tunnel shield construction is rich and detailed, and can be downloaded for reference and study by netizens. -
Summary of tunnel construction technology that must be learned by tunnel supervisors (18 pages in total) The full face method is used for the construction of the tunnel in the Class III surrounding rock section, and the bench method is used for excavation in the Class IV and V surrounding rock sections. The anchor, mesh and shotcrete are used for initial support, the inverted arch is advanced, and the arch wall is lined once. The arch wall full ring grid steel frame and double layer φ 42 small conduit at the arch are used for advanced support in the seismic fortification lining section of the active fault zone, and the lining trolley is used for lining inside the tunnel. Tunnel advance geology during construction -
Key points of highway tunnel construction technology Key points of highway tunnel construction technology -
Discussion on construction technology of highway tunnel Due to the convenience of work, we found three highway tunnel construction sites of national key construction projects, visited the construction site, and thought about the current construction technology and procedures -
Summary of construction technology for installing air conditioners Ventilation and air conditioning construction manual, main machine room water pipe hoisting, axial flow fan, water pump outlet pipe, MK main machine. Electronic scale remover, etc. -
Rock burst construction technology of highway tunnel Technical Scheme for Rock Burst Construction of Highway Tunnel -
Tunnel construction technology and process scheme 1. Construction of portal section and portal 1.1 The protective drainage system such as the intercepting ditch at the top of the mountain shall be completed first, and then the side and front slopes shall be excavated according to the construction drawings. Mechanical excavation is the main method of excavation, supplemented by small loose blasting when it is difficult. The slope surface shall be supported by anchor, shotcrete and hanging net while excavating. When the excavation reaches the design elevation, all slope protection work shall be completed in time. -
Analysis on the technical management of tunnel construction The construction technology management business of the project is managed by the Engineering Technology Department of the Project Department. The Engineering Technology Department implements the integration of responsibility, expertise and authority. Under the leadership of the project leader in charge of production and the chief engineer, it implements the construction technology management authority on behalf of the Project Department -
Overall construction technical scheme of a tunnel The overall construction technical scheme of a tunnel is rich and detailed, and can be downloaded for reference and study by netizens. -
Technical disclosure of tunnel blasting construction Blasting design procedure, selection of blasting materials, blasthole layout, blasting parameters -
Technical disclosure of tunnel construction in winter Definition of winter construction, overall technical scheme of winter construction, winter construction standards -
Technical disclosure of tunnel waterproof construction Waterproof grade, waterproof measures, waterproof construction process flow chart -
Technical disclosure of tunnel rail crossing pipe construction Statistical Table of Tunnel Rail Crossing Pipe Setting and Tunnel Mileage Location -
Summary of graded crushed stone construction technology This data is a summary of graded crushed stone construction technology. The graded crushed stone is mixed in a centralized plant in a mixing station. The basic requirement for mixing is to evenly mix raw materials with different particle sizes, so that the graded crushed stone meets the design and specification requirements. Gravel from Liaoyang City is selected as the material source, and the filler is Class A soil. The content is detailed and worth downloading. -
Summary of construction technology of a bridge in Qinshen This document is a summary of the construction technology of a bridge in Qinshen, including the design of the bridge superstructure, the main standards to be implemented, the main technical standards for bridges and culverts, bridge and culvert design and engineering tests. It is detailed and worth downloading. -
Summary of old bridge demolition construction technology This data is a summary of the old bridge demolition construction technology. The structural form is 8-32m post tensioned prestressed simply supported T-beam, single track railway, 7 piers and 2 sets, the highest pier is about 21m, and the beam height is 2.5m. There are 16 beams in the whole bridge, and each beam weighs about 100t. The content is detailed and worth downloading. -
Construction technology of collapsible loess tunnel To solve the collapsibility problem of loess is the first task of building railways in western China. Collapsible loess, commonly known as macroporous soil, is a kind of yellow or brownish yellow powdery soil formed in the Quaternary period, whose particle composition is dominated by silt particles. It belongs to unsaturated and under compacted soil, which has a large void ratio and low dry density, and is the fundamental cause of loess collapsibility. -
Summary of construction technology of silty soil subbase It is rare to use large amount of cement stabilized fine-grained soil for large area subbase construction. This paper mainly summarizes how to use the rich local resources - silty soil as the main aggregate to carry out the mix design of expressway subbase, construction process control, problems found in the construction process and related treatment measures. -
Construction technology of tunnel fault fracture zone Dongfeng Tunnel is the fourth large tunnel on Shuohuang Railway Line. It is a double track tunnel with a total length of 3290m. The section DIK47+610-DIK48+974 at the exit end of our construction is 1364m long. Among them, the section DIK47+880-Dm48+040 passes through the fault fracture zone of Class II surrounding rock. The lithology is mainly schist, shale, sandstone with thin layer of marl -
[Changsha] Summary of key points of construction technology of "skip warehouse method" The "skip warehouse method" is to change the post cast strip into construction joint, two joints into one, with an interval of 7 days. "Jumping warehouse method" overcomes the shortcomings of deformation joints, reduces construction and speeds up the progress. It is a significant technical progress for the standardized construction method and traditional construction method of super large volume concrete structures. 5 pages prepared in 2014 -
Construction technology of secondary lining of subway tunnel Combined with the specific engineering practice, this paper introduces the construction methods of the composite support of the initial support of the shotcrete anchor construction method and the permanent support of the cast-in-place reinforced concrete of the subway tunnel constructed by the mining method, expounds the specific construction. T -. T - technology and technical requirements, and puts forward some suggestions. -
Research and Application of Construction Technology for Karst Tunnel Through the construction of Jindong Tunnel and Qihaoling Tunnel in karst section of Chongqing Huaihua Railway, the principle of tunnel karst treatment, karst hazard assessment and treatment countermeasures are determined by comprehensive advance geological prediction and prediction, so as to reduce construction blindness and ensure the safety and stability of engineering construction and engineering structure. -
Summary of construction technology of post tensioned continuous beam The post tensioned prestressed concrete continuous hollow slab beam is constructed by the cast-in-place method of erecting full support. During the concrete pouring process, the support will bear a large load -
Construction technology of wet shotcrete in tunnel Construction technology of wet shotcrete in tunnel -
Technical disclosure of tunnel shotcrete construction Main design parameters of shotcrete for Grade IV surrounding rock (general section): C25 mesh shotcrete fiber concrete is used for Grade IV surrounding rock, and the shotcrete thickness is 18cm. -
Summary of Phase III river construction technology L and inverted F reinforced concrete retaining walls are arranged on the two sides of the river, with a wall thickness of 30 cm. The foundation under the wall is made of φ 550 cement mixing piles and backfilled with 30 cm thick graded sand gravel cushion, and 10 cm thick C10 concrete cushion. -
Tunnel construction technology in coal seam gas section Tunnel construction technology in gas section of coal seam. doc, which is detailed and rich, can be downloaded by netizens. -
Overall Construction Technology of a Tunnel on Shibai Expressway According to the specific geological conditions of the project and the provisions of the Technical Code for Construction of Highway Tunnels (JTJ042-94), combined with our long-term experience in advanced geological prediction, it is proposed to use geological radar, TSP and geological inference methods for comprehensive prediction of the tunnels in this contract section. The geological radar method is mainly used for medium and long tunnels and short tunnels with simple geology and good surrounding rock. TSP is mainly used for
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one Summary of tunnel survey construction technology -
two Summary of personal tunnel construction technology -
three Summary of tunnel portal construction technology -
four Summary of highway tunnel construction technology -
five Summary of Railway Tunnel Construction Technology -
six Summary of tunnel portal construction technology -
seven Summary of Tunnel Construction Technology Training -
eight Summary of tunnel construction technology innovation