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Construction Technology and Cost Analysis of Large Section Railway Tunnel This data is the construction technology and cost analysis of large section railway tunnel. It introduces the construction technology and cost index analysis of shallow buried unsymmetrical pressure section and soft swelling surrounding rock of large section railway tunnel designed as double deck container. The content is detailed and worth downloading. -
Technical exchange materials for subway plant construction Metro or Subway in English, usually refers to underground railway, also referred to as subway in short, and specifically refers to urban railway system or rapid transit system mainly operating underground in narrow sense; But in a broad sense, many of these systems may also have ground roads in order to match the built environment, so they usually cover various underground and ground high-density traffic in urban areas -
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 -
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. -
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 -
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. -
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. -
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 -
Construction Technology Control of Tunnel Undercrossing Existing Railway Line Taking the XXXX tunnel project under the existing railway line as an example, the layout of D-shaped temporary beams is analyzed and calculated. The results show that the line reinforcement scheme is safe and reliable; Corresponding technical measures are proposed for the key links in the construction of large pipe shed and double wall heading method, so as to organize the construction of tunnels under the existing railway line, strengthen the construction technology control, effectively reduce the construction risk, and ensure the operation of existing lines -
Summary of Construction Technology Exchange of Dalian Super Large Bridge This PPT is used internally to summarize the construction methods and experience of this bridge section for your reference and exchange. -
Technical disclosure of inclined shaft steel support installation of a railway tunnel Class V composite lining of D2K32+670 ～ D2K32+630 section (40m in total) adopts I20b steel frame with a spacing of 1.0m/truss. There are 3 types of 9 units in the whole section, 5 units in A, 2 units in B and C, as shown in Figure 1. According to the actual operation on site, it is convenient and refer to the description of Kunyu Tunnel Reference (09) 02-05-1 -
Technical disclosure for construction of cable trough in side ditch of railway tunnel The side ditch cable trough on both sides of high-speed railway tunnel is generally three troughs (drainage, power, communication), and the construction method of integral secondary pouring of combined formwork is adopted. The combined formwork shall be designed according to the structural design drawing of the tunnel side ditch cable trough, and the formwork shall be accurately and precisely processed by the component processing workshop. During the construction, the side touch and drainage ditch formwork shall be accurately positioned according to the survey and setting out structure, and fixed in the tunnel with reinforcement piles -
Technical disclosure of manual digging pile construction of a railway tunnel After the formwork is spliced, it shall be derusted, polished, coated with release agent, and erected. The side formwork shall ensure its perpendicularity and straightness. The dimensional deviation in the formwork shall not be more than ± 30mm, the elevation deviation shall not be more than ± 10mm, and the axis deviation shall not be more than ± 10mm. After the formwork is erected, the formwork shall be checked, and the places with slurry leakage shall be sealed with sponge strips. -
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. -
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. -
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 -
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 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 -
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 -
Construction technology of overpass tunnel passing through civil buildings Combined with the on-site situation, this paper introduces the construction technical measures to ensure the safe use of civilian buildings and reduce the uneven settlement of civilian buildings during the construction, and introduces the construction technology of the upper and lower tunnels of the overpass tunnel, which can safely pass through the ground buildings through such measures as advance small conduit, radial grouting, grouting reinforcement of the face, replacement, and support removal, so as to provide reference and reference for similar projects in the future. -
Technical disclosure of tunnel concrete curing construction The arrangement and spacing of shot holes The shot holes should be arranged at equal intervals starting from the heading face back X3=3~5m, and the distance between the shot holes is 2m. When it is difficult to make holes, they can be staggered from top to bottom, left to right, but should be within 10cm. -
Technical disclosure of waterproof construction of cable tunnel When the power supply is cut off, the operating handle shall be locked or tagged. Insulating gloves shall be worn during the electrical test, electroscope shall be used according to the voltage level, and the electrical test shall be carried out for each phase or each phase on both sides of the equipment. After verifying that there is no power in the equipment or circuit, the maintenance equipment or circuit shall be short circuited and grounded. The installation of grounding wire should be carried out by two people. The grounding terminal should be connected first and then the conductor terminal. The removal sequence is reverse -
Technical disclosure of a railway filler construction The excavated earth must be transported away in time. It is forbidden to stack earth and stone within 1m around the wellhead, and the height of the stack should not be higher than the height of the wellhead casing. The safety protection fence must be set around the well hole, and the fence must be firm. The pile hole being excavated or the hole being dug must be set with a firm hole cover plate, and non workers are prohibited from entering. -
Technical management of tunnel construction in a certain area The project chief engineer plays a very important role in project management, and his responsibility is also very important. He is a key position in project management. -
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. -
Technical code for construction of highway tunnels This data is: Technical Specification for Construction of Highway Tunnel: Technical Specification for Construction of Highway Tunnel, which is detailed and can be used for reference. -
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 disclosure of electromechanical system commissioning construction Commissioning is an important work to detect and check whether the operation of each system of the electromechanical installation project meets the design requirements and whether the electromechanical system of the building can be guaranteed to be in the best working state. -
Technical disclosure of tunnel construction (Level I EM) Project overview, project management objectives, main construction processes and schemes -
Comprehensive construction technology of waterproof and drainage for double arch tunnel of urban railway This data is: comprehensive construction technology for waterproofing and drainage of urban railway double arch tunnel. The content is complete, detailed and can be used for reference.
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one Drilling and blasting construction technology of railway tunnel -
two Construction technology of secondary lining of railway tunnel -
three Complete set construction technology of railway tunnel -
four Technical Table for Railway Tunnel Construction -
five Construction technology of railway tunnel diseases -
six Technical Rules for Railway Tunnel Construction -
seven Technical Scheme for Railway Tunnel Construction -
eight Technical Manual for Railway Tunnel Construction