Composite material for adsorbing gas overflowing from tunnel face and construction method of composite material

A composite material and construction method technology, applied in applications, household appliances, earth-moving drilling and mining, etc., to achieve the effect of reducing hidden dangers, convenient construction, and reducing the risk of gas outburst

Active Publication Date: 2021-01-05
CHINA RAILWAY 16TH BUREAU GRP RAIL TRANSPORT ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the gas content in the rock formation is high, advanced discharge is also dangerous

Method used

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  • Composite material for adsorbing gas overflowing from tunnel face and construction method of composite material
  • Composite material for adsorbing gas overflowing from tunnel face and construction method of composite material

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only the present invention. Some examples, but not all examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0026] A composite material for absorbing gas spilled from the face of the present invention, including activated carbon fiber powder, viscous agent, and foaming agent, the mass ratio of the activated carbon fiber to the viscous agent is 1:3-1:6 , the activated carbon fiber is mixed with a viscous agent to obtain a thickened solution, and the mass ratio of the thickened solution to the foaming agent is 20:1-40:1. When making composite m...

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Abstract

The invention discloses a composite material for adsorbing gas overflowing from a tunnel face and a construction method of the composite material, and relates to the technical field of tunnel construction. The composite material is prepared by mixing activated carbon fiber powder, a thickening agent and a foaming agent, the obtained colloid foam-shaped activated carbon composite material is injected into a sleeve valve pipe embedded in surrounding rock through a grouting pipe by means of a double-liquid grouting pump, enters rock gaps of coal-series rock surrounding rock along slurry overflowing holes in the side wall of the sleeve valve pipe, can block karst cracks or cavities, fully adsorbs free gas in a rock stratum by means of activated carbon, forms a colloid covering layer on the surface of the rock body at the same time, so that the purpose of effectively inhibiting gas emission is achieved. According to the method, the activated carbon composite material is injected into the rock stratum behind the tunnel face in advance, the gas concentration in surrounding rock can be reduced before excavation is exposed, the risk of gas outburst in the tunnel face excavation process is effectively reduced, the gas release amount after rock mass excavation is exposed is reduced at the same time, more initiative and effectiveness are achieved, and potential safety hazards of tunnel construction are reduced.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a composite material for absorbing overflow gas from a tunnel face and a construction method thereof. Background technique [0002] With the expansion of the scale and number of tunnel construction, more and more tunnels pass through the mountains in the gas accumulation area, and the problem of gas safety has become increasingly prominent. The gas gushing out of the tunnel mainly comes from the exposure of the rock formation at the face of the tunnel, which will cause various disastrous consequences such as poisoning, suffocation, burning, and explosion. According to the different forms of gas occurrence, the forms of gas gushing are divided into slow infiltration, rapid influx and outburst, among which outburst is the strongest and the most harmful. During the construction of road and railway tunnels, the excavation area is large, and factors such as blasting and m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/12E21D11/10
CPCC04B26/125E21D11/10C04B2111/00724C04B2111/40C04B14/386C04B24/282C04B38/106
Inventor 熊华涛杨涛杜英杰张兵孟通杨晔尤梁宫晨朱明张洪亮梁渭龙严亮亮史跟平孙申龙周明杰胡晶邢继翠
Owner CHINA RAILWAY 16TH BUREAU GRP RAIL TRANSPORT ENG CO LTD
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