Temporary isolation wall provided with double-layer air bags and used for closed wind path roadway of underground coal mine

Abstract

The invention discloses a temporary isolation wall provided with double-layer air bags and used for a closed wind path roadway of an underground coal mine, and belongs to the technical field of prevention for coal self-combustion in underground coal mines. The temporary isolation wall comprises an air inflation bag body, a fixed assembly and an auxiliary fire extinguishment channel, wherein the air inflation bag body is of a double-layer bag body structure formed by an outer-layer air bag and an inner-layer air bag, the shape of the air-inflated air inflation bag body is a cylindrical structure, the outer-layer air bag is prepared from fireproof EVA foaming cotton, and the inner-layer air bag is prepared from compact asbestos cloth; and the fixed assembly comprises a connection rope and afixed pile, an air inflation port is formed in the central position of the bottom surface of the inner-layer air bag, the air inflation port is connected with an air inflation pump through a pipeline,and an exhaust valve is arranged at a part adjacent to the air inflation port. The isolation wall is simple in structure, convenient to install, efficient and convenient, and capable of saving manpower and material resources.

Description

technical field [0001] The invention relates to the technical field of prevention and control of underground coal spontaneous combustion in coal mines, in particular to a temporary separation wall used in underground coal mines. Background technique [0002] Building a temporary firewall is one of the important measures for underground fire prevention and extinguishing. It can cut off the ventilation and oxygen supply of the fire point and avoid the spread of harmful gases generated by the fire point. [0003] The technologies and equipment for building temporary firewalls in the prior art mainly include: [0004] Application number 201811225056.1 discloses an underground fire prevention method in coal mines, including a gas pressure regulating chamber and a gas monitoring system. Inflammable gas detectors and infrared sensors are installed at each monitoring point, and an alarm controller is connected near the combustible gas detectors, and the alarm controller is connecte...

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Problems solved by technology

[0006] There are two common points in the above-mentioned prior art, that is, the construction time is long, and a large amount of materials such as wood, stone and concrete are often required to construct a temporary firewall, and a large amount of manpower is required, the labor intensity is high, and the mobilization of manpower and materials and the construction of the firewall cost a lot of money. time

Disposable facilities are difficult to dismantle. When the fire is extinguished at the ignition point, all indicators are normal. The temporary firewall needs to be dismantled, but the dismantling requires the use of large equipment, which is quite difficult and will generate a lot of garbage

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