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Composite material and construction method for absorbing gas spilled from face

A technology of composite materials and construction methods, applied in the fields of application, earthwork drilling, household appliances, etc., to achieve the effect of reducing safety hazards, reducing gas release, and reducing the risk of gas outburst

Active Publication Date: 2022-05-27
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 and construction method for absorbing gas spilled from face
  • Composite material and construction method for absorbing gas spilled from face

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Embodiment Construction

[0025]In order to make the object of the present invention, technical solutions and advantages more clearly understood, the following in conjunction with the accompanying drawings and specific embodiments, the technical solutions in the embodiments of the present invention are clearly and completely described, obviously, the described embodiments are only part of the embodiments of the present invention, not all embodiments. It should be understood that the specific embodiments described herein are merely used to explain the present invention and are not intended to qualify the present invention.

[0026] The present invention provides a composite material for adsorption of palm surface overflow gas, comprising activated carbon fibers, viscosites, blowing agents, the mass ratio of the activated carbon fibers to the viscosite is 1: 3 ~ 1: 6, the activated carbon fibers are mixed with the viscous agent to obtain a thickening solution, the bulk ratio of the thickening solution to the...

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Abstract

The invention discloses a composite material and a construction method for absorbing gas overflowing from a tunnel face, and relates to the technical field of tunnel construction. The composite material is formed by mixing activated carbon fiber powder, a viscous agent and a foaming agent to obtain a colloidal foam The activated carbon composite material is injected into the sleeve valve pipe embedded in the surrounding rock through the grouting pipe through the double liquid grouting pump, and enters the rock mass gap of the surrounding rock of the coal-measure rock mass along the overflow hole on the side wall of the sleeve valve pipe , can block karst fissures or cavities, use activated carbon to fully absorb the free gas in the rock formation, and at the same time form a colloidal covering layer on the surface of the rock mass to effectively inhibit the gas from gushing out. In the present invention, by injecting the activated carbon composite material into the rock formation at the back of the face in advance, the gas concentration in the surrounding rock can be reduced before excavation and exposure, effectively reducing the risk of gas outburst during the excavation process of the face, and at the same time reducing the rock mass The amount of gas released after excavation is more active and effective, reducing the safety hazards of tunnel construction.

Description

Technical field [0001] The present invention relates to the field of tunnel construction technology, in particular to a composite material for adsorbing palm surface overflow gas and a construction method thereof. Background [0002] With the expansion of the scale and number of tunnel construction, more and more tunnels pass through the mountain range of the gas accumulation area, and the gas safety problem is becoming more and more prominent. Tunnel gas gushes mainly from the exposure of rock formations at the palm face, which can cause many catastrophic consequences such as poisoning, suffocation, combustion, and explosion. According to the different forms of gas storage, the form of gas gushing is divided into slow infiltration, rapid influx and protrusion, etc., of which the prominence is the most intense and the most harmful. The excavation area of highway and railway tunnel construction is large, and the blasting and mechanical vibration during the construction process wil...

Claims

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Application Information

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Patent Type & Authority Patents(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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