Gas drainage system for tunnel and tunnel structure

A technology of gas drainage and tunnel structure, which is applied in the direction of gas discharge, drainage, safety devices, etc., to reduce the risk of escape, avoid accumulation, avoid safety hazards and even accidents

Pending Publication Date: 2017-07-25
ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a gas drainage system for the separation of water and gas in the gas tunnel

Method used

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  • Gas drainage system for tunnel and tunnel structure
  • Gas drainage system for tunnel and tunnel structure
  • Gas drainage system for tunnel and tunnel structure

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[0030] The present invention will be further described below with reference to the accompanying drawings and exemplary embodiments, in which the same reference numerals in the accompanying drawings all refer to the same components. In addition, if a detailed description of the known technology is unnecessary to show the features of the present invention, it will be omitted.

[0031] Such as figure 1 As shown, one of the embodiments of the tunnel structure provided by the present invention includes: a gas drainage system, a drainage pipe 4, a circular blind trench 5, an initial support 6, a secondary lining 7, an invert 9 and a tunnel cavity 10; The gas drainage system includes a gas extraction device 1, a gas drainage channel 2 and a sealing device 3; the initial support 6 is a steel frame support, located on the outer layer of the tunnel; the secondary lining 7 is airtight Concrete pouring is located on the inner side of the initial support 6; the invert 9 is arranged opposite t...

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PUM

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Abstract

The invention discloses a gas drainage system for a tunnel. The gas drainage system comprises a gas drainage hole passage achieving communicating of the front position of a tunnel advancing end point and the outside world, an gas evacuating device arranged outside the tunnel and connected with the gas drainage hole passage, and a sealing device, wherein the sealing device achieves sealing the gas drainage hole passage and the gas evacuating device in the connection position. By communicating of the front position of the tunnel advancing end point and the outside world, gas is extracted out and discharged before the tunnel is advanced to a gas gathering area, and security accidents due to gas gathering can be effectively prevented.

Description

[0001] 【Technical field】 [0002] The invention relates to the field of tunnel construction, in particular to a gas drainage system and a tunnel structure of a gas tunnel. [0003] 【Background technique】 [0004] Gas refers to the general term for various harmful gases overflowing from coal (rock) layers. Its main components are methane, carbon dioxide, and sometimes a small amount of sulfur dioxide, hydrogen sulfide, carbon monoxide and other gases. Gas is a colorless, odorless and odorless gas, but sometimes it will emit a special smell similar to apple aroma due to the accompanying hydrocarbons and trace amounts of hydrogen sulfide. Its relative density is 0.554. Gas is slightly soluble in water and has a strong Diffusion and permeability, gas is flammable and explosive. According to the "Technical Specifications for Railway Gas Tunnels", gas tunnels are divided into three types: low gas tunnels, high gas tunnels and gas outburst tunnels. The gas tunnel work area is divide...

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Application Information

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IPC IPC(8): E21F7/00E21F16/02
CPCE21F7/00E21F16/02Y02E10/20
Inventor 高世强肖向荣杨立新檀兴华刘敦文刘怀刚刘伟葛纪平张铮褚夫蛟谭力海赵升辉
Owner ROAD & BRIDGE SOUTH CHINA EINGINEERING CO LTD
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