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Crossed and overlapped tunnel construction method

A tunnel and tunnel construction technology, applied in the field of tunnel construction, can solve problems such as the short service life of the tunnel and the poor overall structural strength of the tunnel, and achieve the effect of being conducive to long-term use and improving structural strength

Inactive Publication Date: 2019-04-09
CHINA RAILWAY TUNNEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for constructing cross-overlapping tunnels to solve the problems of poor overall structural strength of the tunnel and low service life of the tunnel proposed in the above-mentioned background technology

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  • Crossed and overlapped tunnel construction method

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] see figure 1 , the present invention provides a technical solution:

[0023] A method for constructing cross-overlapping tunnels, comprising the following methods:

[0024] S1. First complete the preparations for the construction of the tunnel, and then determine the excavation positions for the tunnels of Line 1 a and Line 1 b, and the tunnels of Line 2 a and Line 2 b; among them, the excavation positions of the tunnels of Line 1 Above the tunnel exc...

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Abstract

The invention discloses a crossed and overlapped tunnel construction method. The method comprises the steps as follows: firstly, making preparation for tunnel construction, and then determining digging positions for construction of No.1 lines a and b tunnels and No.2 lines a and b; constructing tunnels according to the construction principle of first up and then down; excavating the No.2 line tunnels and then excavating the No.1 line tunnels; excavating four tunnels including the No.1 line a, the No.1 line b, the No.2 a and the No.2 b according to the construction steps to construct the crossed and overlapped tunnels. The vertically overlapped and crossed tunnels can be constructed according to the construction sequence of first up and then down, so that the tunnels have a double-layer parallel and overlapped station transfer function, ground stirring piles and in-hole grouting reinforcement manners are used, the overall structural strength of the tunnels is improved, and long-term useof the tunnels is facilitated.

Description

technical field [0001] The invention relates to the field of tunnel construction methods, in particular to a construction method for crossing and overlapping tunnels. Background technique [0002] Tunnels refer to passages dug out of existing buildings or earth-rock institutions. They are engineering buildings buried in the ground. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels and mine tunnels; the structure of the tunnel includes the main body There are two parts: buildings and auxiliary equipment. The main building is composed of a cave body and a door. The working environment requires ventilation and lighting; long tunnels and super-long tunnels of high-speed railways should be equipped with emergency exits based on the conditions of the auxiliary tunnels, and signs and emergency lighting facilities should be installed above the emergency exits. [0003] With the rapid development of urbanization, in order to alleviate traffic pressure...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/10E02D5/46
CPCE02D5/46E21D9/00E21D9/001E21D11/10
Inventor 游永锋冯欢欢董祥宽唐纵雄梁奎生陈建立崔伟姜宗恒
Owner CHINA RAILWAY TUNNEL