Long tunnel fast construction process

Abstract

The invention discloses a long tunnel fast construction process. The tunnel construction method in the direction from the entrance to the exit and the tunnel construction method in the direction from the exit to the entrance are the same and each construction section is respectively constructed from back to front. The construction process is as follows: 1, excavating construction at an initial construction section, the process is as follows: performing advance geology forecast, determining the excavating construction method for the current construction section, excavating and primary supporting; 2, excavating construction at the next construction section; 3, repeating the step 2 for multiple times until the construction tunnel is through, wherein in the tunnel construction process, found water seepage areas are timely subjected to draining treatment, and the secondary lining construction is synchronously performed on the tunnel holes formed by excavating from front to back. The long tunnel fast construction method is reasonable in design, simple and convenient in construction, safe in the construction process, short in construction process and fast in construction progress, thus effectively solving the defects and shortcomings such as large equipment investment, long construction period and slow construction progress of the existing long tunnel construction.

Description

technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a rapid construction technology for long and long tunnels. Background technique [0002] The Nanguang Railway is a passenger-cargo railway with a design speed of 200 kilometers per hour, 250 kilometers are reserved, and the construction requirements reach 250 kilometers at a time. The Huapeiling Tunnel is one of the control projects of the Nanguang Railway. It is designed as a double-line large-section tunnel, which is divided into two-way excavation construction at the entrance and exit. It is designed without inclination and shafts. It is located at the junction of Guangdong and Guangxi provinces, crossing the two provinces The entrance is located in Dugou Village, Dapo Town, Cangwu County, Guangxi Province, and the exit is located in Gulong Village, Platform Town, Yunan County, Guangdong Province. The main vein of Peiling. The clearance width of Huape...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a rapid construction process for long tunnels in view of the deficiencies in the above-mentioned prior art, which has reasonable design, simple construction, safe and reliable construction process, short construction period and fast construction progress, effectively solving The defects and deficiencies existing in the construction of existing long tunnels are large investment in equipment, long construction period, and slow construction progress.

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