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Monitoring device and monitoring method for monitoring air leakage in coal seam goaf

A monitoring device and goaf technology, which is applied in mining devices, mining equipment, earthwork drilling, etc., can solve problems such as inability to effectively prevent coal spontaneous combustion in goafs, and inability to accurately determine the oxygen content of goafs, and achieve special The effect of scientific prevention and control of coal spontaneous combustion in goaf of thick coal seam, improving safety production and reducing waste

Active Publication Date: 2016-06-22
CHINA SHENHUA ENERGY CO LTD +2
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AI Technical Summary

Problems solved by technology

However, in the existing technology, there is still a lack of monitoring of air leakage in the goaf, and it is impossible to accurately determine the oxygen content in the goaf, so that it is impossible to effectively prevent the spontaneous combustion of coal in the goaf and avoid the occurrence of vicious accidents.

Method used

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  • Monitoring device and monitoring method for monitoring air leakage in coal seam goaf

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Embodiment Construction

[0023] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] The monitoring device and the monitoring method provided by the present invention are dedicated to monitoring the air leakage in the goaf of an extra-thick coal seam (the thickness of the coal seam is between 3.5m and 10m).

[0025] Such as figure 1 As shown, a monitoring device for monitoring air leakage in coal seam gobs provided by the present invention includes two main connecting pipes 3, two sampling pipes 4 and two explosion-proof air pumps 8, and the two main connecting pipes 3 are respectively installed In the parallel grooves 2 on both sides of the coal mining face 1, two sampling pipes 4 are arranged laterally in the goaf 7, and each sampling pipe 4 communicates with two main connecting pipes 3 respectively, and each main connecting pipe 3 An explosion-proof air pump 8 is arranged inside, and each sampling pipe 4...

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Abstract

The invention discloses a device for monitoring air leakage of a goaf of a coal seam. The device comprises two main connecting pipes, two sampling pipes and two anti-explosion air pumps. The two main connecting pipes are installed in gate roads in the two sides of a coal mining working face respectively. The two sampling pipes are transversely arranged in the goaf and are communicated with the two main connecting pipes respectively. The two anti-explosion air pumps are arranged in the two main connecting pipes respectively. Each sampling pipe is provided with a plurality of monitoring ports, each monitoring port is connected to one of the anti-explosion air pumps through an independent air feeding branch pipe, and the density of the monitoring ports, formed close to the gate roads in the two sides of the goaf, of each sampling pipe is larger than that of the monitoring ports, located in the middle of the goaf, of the sampling pipe. The invention further discloses a method for monitoring air leakage of the goaf of the coal seam.

Description

technical field [0001] The invention belongs to the technical field of coal spontaneous combustion prevention and control in goafs of coal mines, and in particular relates to a monitoring device and a monitoring method for monitoring air leakage in goafs of coal seams. Prevention and control of coal spontaneous combustion. Background technique [0002] Spontaneous coal seam fires in mines have become one of the major disasters that directly threaten the safe production of mines. Statistics show that more than 50% of key state-owned coal mines have the threat of spontaneous combustion, especially in the thick coal seams that are being mined on a large scale. There are a large number of extra-thick coal seams in large coal bases such as Shendong, Shanbei, Huanglong, Ningdong, and Xinjiang in China. This type of coal seam has the remarkable characteristics of unstable thickness, high hardness, and short spontaneous combustion period. With the popularization of fully mechanize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/18
Inventor 鲁义贺安民白枫桐尚少勇李恒
Owner CHINA SHENHUA ENERGY CO LTD
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