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Prediction and early warning method of composite coal-rock dynamic disaster based on gas concentration and acoustic emission extraction index

A technology for gas concentration and dynamic disasters, applied in earthwork drilling, data processing applications, instruments, etc.

Active Publication Date: 2020-11-17
XIAN UNIV OF SCI & TECH
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Problems solved by technology

[0003] In short, the early warning and prevention of composite coal-rock dynamic disasters is only a preliminary study, and a method of prediction and early warning is urgently needed

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  • Prediction and early warning method of composite coal-rock dynamic disaster based on gas concentration and acoustic emission extraction index

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[0017] In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings that need to be used in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

[0018] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions protected by the present invention will be clearly and completely described below using specific embodiments and accompanying drawings. Obviously, the implementation described below Examples are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in this patent, all other embodiments obtained by persons of ordinary skill in the art without creative eff...

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Abstract

The invention provides a composite coal and rock dynamic disaster forecasting and early warning method based on gas concentration and an acoustic emission extracting index. The composite coal and rockdynamic disaster forecasting and early warning method comprises the steps that according to the occurrence mechanism of a composite coal and rock dynamic disaster, response information of acoustic emission and gas concentration generated by coal body fracture and gas desorption and diffusion before the coal body is subjected to instability and catastrophe is analyzed, a mathematical model is established, and a forecasting and early warning index is formed. According to the composite coal and rock dynamic disaster forecasting and early warning method based on the gas concentration and the acoustic emission extracting index, a big data technique is used for realizing the continuous intelligent forecasting and early warning of composite coal and rock dynamic disasters.

Description

technical field [0001] The invention relates to the field of prevention and control of coal-rock dynamic disasters in coal mines, in particular to a composite coal-rock dynamic disaster prediction and early warning method based on gas concentration and acoustic emission extraction indexes. Background technique [0002] From the perspective of energy demand, my country's coal-based energy structure will not change in a short period of time, the proportion of coal will remain at about 50% for a long time, and about 95% of coal mining is dominated by underground mining. At present, coal mining extends to the deep at a rate of 10-20m per year. Deep mining has gradually become the norm in the central and eastern regions, and has brought new problems of coal-rock gas dynamic disasters. The two most typical manifestations of coal-rock gas dynamic disasters in mines in my country are coal and gas outburst and rock burst, but the gas-bearing coal-rock dynamic disasters in the central...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/18G06Q50/02
CPCE21F17/18G06Q50/02
Inventor 董国伟
Owner XIAN UNIV OF SCI & TECH