Coal spontaneous combustion gas marker acquiring device for goaf

Abstract

The invention discloses a coal spontaneous combustion gas marker acquiring device for a goaf. The coal spontaneous combustion gas marker acquiring device comprises high-pressure pipes (1) arranged along an oxidation and heating zone and the air return shaft direction, the high-pressure pipes (1) are axially and fixedly connected by connecting casings (4), the middle of each high-pressure pipe (1) is provided with a detector pipe (2) communicated with the inside of the high-pressure pipe (1), a plurality of binding pipes (3) connected with an air sucking pump are arranged in the high-pressure pipes (1), the other ends of the binding pipes (3) extend into the detector pipes (2) and the ends of the binding pipes (3) are fixed at the ends of the detector pipes (2) by fixing clamps (7). The coal spontaneous combustion gas marker acquiring device is resistant to high pressure and high in strength, the pipeline is protected from cracking by rock mass collapse of the goaf, and bending can meet actual arrangement needs within a certain radius; the high-pressure pipes are rubber pipes and are resistant to high temperature and anti-ageing, service lives of the high-pressure pipes are prolonged, oxidation and corrosion under the action of high-temperature smoke and water steam can be prevented, and the coal spontaneous combustion gas marker acquiring device is durable and has excellent structure stability.

Description

technical field [0001] The invention relates to a bundle tube gas collection device and method, in particular to a gas collection device in goafs under mines. Background technique [0002] The gas extraction analysis of the pre-buried bundle pipes in the goaf is the main method to study the oxidation distribution of the goaf residual coal and determine the distribution range of the "three zones" of spontaneous combustion of the goaf residual coal in the working face. At present, most of the mine goafs in my country use vacuum pumps to pump the sampling gas to the ground through the embedded bundle tube, and use chromatography to analyze the changes of gas components. In order to predict the early prediction of spontaneous combustion fire in goaf and identify the degree of fire danger. However, it has been found in practice that the part of the gas bundle tube monitoring system and the design of the pipeline at the measuring point have become the most faulty parts of the ent...

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Problems solved by technology

[0003] (1) Steel pipe protection is poor in strength and inflexible, difficult to maintain, mine pressure and goaf falling coal and rock mass are easy to fracture the bundled pipe and cause air leakage, or directly break the pipeline to cause a short circuit;

[0004] (2) The design of the pipeline at the probe of the measuring point is unreasonable, easy to accumulate water, and coal and rock dust is easy to enter, and it is difficult to remove after entering; affecting gas transmission detection

[0005] (3) The layout of monitoring points in the goaf is unreasonable, and the monitoring of the gob in all directions, three-dimensional and multi-angle has not been realized

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