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Determination method and measurement system for three spontaneous combustion zones of goaf of coal mine

A technology of spontaneous combustion three zones and a determination method, which is applied to measurement devices, mining devices, mining equipment, etc., can solve the problems of long working time and low efficiency of spontaneous combustion zones in goafs, achieve refined management, and improve the level of informatization. Effect

Inactive Publication Date: 2019-09-10
GL TECH CO LTD
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method and measurement system for judging the three spontaneous combustion zones in the goaf of a coal mine, which is used to solve the problems of long working time and low efficiency in detecting the spontaneous combustion zone in the goaf in the prior art

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  • Determination method and measurement system for three spontaneous combustion zones of goaf of coal mine
  • Determination method and measurement system for three spontaneous combustion zones of goaf of coal mine
  • Determination method and measurement system for three spontaneous combustion zones of goaf of coal mine

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Embodiment 1

[0040] Such as figure 2 The shown through-the-ground communication system includes a network centralized controller and several wireless gas concentration sensors, the wireless gas concentration sensors include a microprocessor, and a through-the-ground communication positioning module and a gas concentration measurement module (capable of detecting CO , O 2 、CH 4 Such as n kinds of gas concentration), battery. Based on the system, the present invention proposes a method for judging the three zones of spontaneous combustion in the goaf of a coal mine, such as image 3 shown, including the following steps:

[0041] Arrange the network centralized controller in the underground roadway, and then arrange the wireless gas concentration sensor. You can choose to arrange it before or after the collapse of the goaf, that is, before the collapse of the underground goaf, it is arranged in each set area of ​​the goaf For each wireless gas concentration sensor, the coordinates of the t...

Embodiment 2

[0051] The side of the goaf close to the working face has a large porosity due to the unreal roof caving, and the fresh air flow brought by the air inlet lane of the working face will penetrate into this area to a greater extent, resulting in serious air leakage in this area. Most of the heat generated by the oxidation of residual coal is taken away by the wind flow, which makes it difficult to accumulate heat and cannot cause spontaneous combustion of residual coal, so this area is called the non-combustible zone. The oxygen concentration limit of the non-combustible zone is subject to the laboratory test data. It is generally believed that when the oxygen concentration is greater than 18%, it is judged as a non-combustible zone.

[0052] Extending through the non-combustible zone to the inside of the goaf, the caving is gradually compacted, the porosity is gradually reduced, and the air leakage in the goaf begins to decrease. The oxygen concentration in this area can also ma...

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Abstract

The invention relates to a determination method and a measurement system for three spontaneous combustion zones of a goaf of a coal mine. By virtue of a network concentration controller arranged in anunderground roadway and wireless gas concentration sensors arranged in an underground goaf, one wireless gas concentration sensor sends location information and gas concentration measurement information of all the wireless gas concentration sensors to the network concentration controller by virtue of an ad hoc network, the network concentration controller determines the three spontaneous combustion zones of the goaf according to the location information and gas concentration measurement information of each wireless gas concentration sensor, the network concentration controller is utilized forrealizing dynamic drawing and display of three spontaneous combustion zones of a goaf of a coal working face, a visual data basis is provided for performing reasonable operations, such as working face drawing speed design, roadway layout design, gas extraction design, fire alarm and emergency rescue, on a mine, informatization level of the mine can be greatly improved, and fine management on themine is realized.

Description

technical field [0001] The invention belongs to the technical field of judging spontaneous combustion dangerous areas in goafs of coal mines, and in particular relates to a method and a measurement system for judging three zones of spontaneous combustion in goafs in coal mines. Background technique [0002] Coal spontaneous combustion fire is one of the five major disasters faced by underground coal mines. With the complexity and scale of coal mining conditions expanding, the degree of disasters caused by coal spontaneous combustion fires in mines is also increasing, resulting in a large number of production faces every year due to fire And closed. The observation of the three zones of coal spontaneous combustion in the goaf is the only way to divide the dangerous area of ​​coal spontaneous combustion in the goaf, and it is a necessary condition for the prevention technology of coal spontaneous combustion in the goaf. The observation method with band) is to bury a series of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00E21F17/18
CPCE21F17/18G01N33/0075
Inventor 赵彤宇杨相玉路培超任吉凯刘天伟宋艳珂
Owner GL TECH CO LTD
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