Test method and device for detonation of gas caused by rock friction

A test device and gas technology, applied in the field of rock friction detonation gas gas, can solve problems such as heat generation and gas explosion

Active Publication Date: 2019-09-20
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, due to the large inclination angle of coal seams mined with steep inclinations, the rocks falling from the roof of the coal seam are likely to generate rotational friction with the rocks on the bottom plate during the rolling process, thereby generating heat. Larger kinetic energy, after hitting the rock in the downward direction, the sparks generated by it can easily lead to the explosion of gas gas

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  • Test method and device for detonation of gas caused by rock friction
  • Test method and device for detonation of gas caused by rock friction
  • Test method and device for detonation of gas caused by rock friction

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Embodiment Construction

[0038]Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0039] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should ...

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Abstract

The invention relates to a test device and method for the detonation of gas caused by rock friction. A rock sample is prepared into a rotating test piece and a reciprocating motion test piece; the prepared rotating test piece is fixed on a three-jaw chuck in a spindle box system; the reciprocating motion test piece is fixed on a test piece clamping tool of the reciprocating motion test piece; a thin film on a thin-film reel covers and compacts an explosion tank; an aerating valve is connected to a gas cylinder so that gas can enter the explosion tank, and a stirring fan is turned on; the gas cylinder and the aerating valve are closed after the concentration of the gas reaches a threshold valve; a rotary driving motor, a reciprocating motion driving motor and a linkage slippage device are started, so that the rotating test piece can be rubbed with the reciprocating motion test piece; and an infrared thermometer is started to perform temperature measurement. The method and device are simple in operation, can perform high-precision adjusting on the rotating speed of rock test pieces, the friction contact surface pressure of the rock test pieces and other parameters, and can actually simulate and recur to the whole process of gas detonation accidents caused by rock falling in goaf.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety, and relates to a test method and device for detonating gas by rock friction. Background technique [0002] Coal mine gas (the main component is methane) is one of the main threats to mine safety production. A certain concentration of gas in coal mines, the existence of high-temperature ignition sources and sufficient oxygen are the prerequisites for gas explosion accidents. At the same time, with the continuous improvement of the mechanization level of the current coal industry, more and more high-gas mines have adopted the fully mechanized top-coal caving process for coal mining. The thickness of the coal seam in this type of mine is relatively large. During the process of coal mining, the roof rock falling, frictional heat generation or sparks can easily lead to gas explosion accidents in the goaf under certain environmental conditions. In addition, due to the large inclination angle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N33/22
CPCG01N33/225G01N33/24
Inventor 邓鹏程波巨广刚杨亮杨森周植鹏颜文学彭明辉秦玉兵
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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