Gas outburst prevention extracting pipe structure and mounting method thereof

Abstract

The invention discloses a gas outburst prevention extracting pipe structure and a mounting method thereof. The gas outburst prevention extracting pipe structure comprises PVC pipes (1). A reinforcingpipe (2) and a tripod supporting frame (3) are fixedly arranged at the inner wall of each PVC pipe (1) at intervals. The mounting method includes the steps that the reinforcing pipes (2) and the tripod supporting frames (3) are fixed at the inner walls of the PVC pipes (1) at equal intervals, and the reinforcing pipes (2) and the tripod supporting frames (3) are in interference fit with the innerwalls of the PVC pipes (1); and all the PVC pipes (1) are fixedly connected through connecting pipes (4), and the PVC pipes (1) are in interference fit with the connecting pipes (4). According to thegas outburst prevention extracting pipe structure, the technical problems that because an existing gas extracting pipe adopts a wire protection layer or a metal cover protection layer to increase thepressure-resistant performance in the prior rat, and the fact that transporting and mounting are inconvenient due to high cost and heavy weight is caused; and metal materials are used, because the extraction process is more than 6-8 months, the metal layer is easily corroded due to long term placing of the gas extracting pipe in an extracting hole, and the fact that the anti-pressure ability is reduced is caused are solved.

Description

technical field [0001] The invention belongs to the drainage technology of gas outburst, in particular to an anti-outburst gas drainage pipe structure and an installation method thereof. Background technique [0002] With the rapid development of coal mine production technology, the production capacity of coal mines has been greatly improved. However, with the increase of mining depth, the occurrence conditions of mine gas are complicated, and the amount of gas gushing out is also greatly increased. It is difficult to solve the problem of gas exceeding the limit only by ventilation methods. Mine gas has become an important hidden danger restricting the safe production of coal mines, so it is imperative to carry out gas drainage. In the process of gas drainage, for air permeability coefficient less than 0.04m 2 / (MPa 2 • For the low gas permeability coal seam in d), to achieve a higher gas drainage rate, the pre-mining time should not be less than 6-8 months. Due to the im...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an anti-burst gas drainage pipe structure and its installation method to solve the problems caused by the use of a metal wire protective layer or a metal shell protective layer to increase the compressive performance of the gas drainage pipe in the prior art. It is inconvenient to carry and install due to high cost and heavy weight; and metal materials are used outside. Since the extraction process takes more than 6 to 8 months, long-term placement in the extraction hole will easily lead to corrosion of the metal layer and lead to compression resistance. reduce

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