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Mine classical dynamic disaster electromagnetic radiation and vibration coupling monitoring and early warning method

A dynamic disaster, monitoring and early warning technology, applied in mining equipment, mining equipment, earthwork drilling and mining, etc., can solve the problems of poor monitoring effect and affecting the timeliness of early warning, etc., achieve strong anti-interference ability, weak propagation attenuation, and improve reliability sexual effect

Active Publication Date: 2017-01-11
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0004] However, in the application of microseismic monitoring technology in coal mines, on the one hand, due to the serious interference and attenuation of stress waves in the process of propagating coal and rock mass, the positioning accuracy needs to be further improved; The monitoring effect of some small energy release events is not good, which affects the timeliness of early warning to a certain extent

Method used

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  • Mine classical dynamic disaster electromagnetic radiation and vibration coupling monitoring and early warning method

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Embodiment Construction

[0019] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0020] The invention provides an electric-seismic coupling monitoring and early warning method for typical mine dynamic disasters.

[0021] Such as figure 1 As shown, the specific process of applying this method is as follows:

[0022] (1) Arrange a reasonable electromagnetic radiation antenna array in the monitored area of ​​the mine. Based on the fact that the frequency of the single fracture vibration and its induced electromagnetic radiation is the same in the process of coal and rock fracture, in the 0-3kHz microseismic (acoustic emission) monitoring technology working frequency band, the electromagnetic radiation in this frequency band is used to replace the microseismic (acoustic emission) technology; combined with the existing higher frequency b...

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Abstract

The invention provides a mine classical dynamic disaster electromagnetic radiation and vibration coupling monitoring and early warning method and belongs to the technical field of mine safety monitoring. The method comprises the steps that based on the principle that multi-frequency electromagnetic radiation is generated in coal rock burst, same-frequency electromagnetic radiation is used for replacing the sound emission and slight shock means based on electromagnetic radiation and vibration coupling in the 0-3 kHz slight shock (sound emission) monitoring technology working frequency band, and uniform, non-contact, large-range and positioned monitoring and early warning to coal rock dynamic disasters by electromagnetic radiation from the low frequency band to the high frequency band are achieved.

Description

technical field [0001] The invention relates to the technical field of mine safety monitoring, in particular to an electric-seismic coupling monitoring and early warning method for typical mine dynamic disasters. Background technique [0002] Rockburst, coal and gas outburst are typical mine dynamic disasters. Among them, rock burst refers to the sudden vibration accompanied by loud noise and shock wave of the coal and rock mass around the working face under the action of high stress, which will cause the surrounding rock to suddenly move outward, eject, destroy or block the roadway, causing personnel Casualties, damage to ventilation system. The damage range of rock burst disasters can reach several meters or hundreds of meters. In recent years, the maximum length of roadways damaged by rock bursts has reached more than 600 meters. Coal and gas outburst means that under the action of high stress, a large amount of broken coal and gas are suddenly ejected from the coal bod...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F17/18
CPCE21F17/18
Inventor 何学秋宋大钊
Owner UNIV OF SCI & TECH BEIJING
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