Method for evaluating impact risk of near-field surrounding rocks in mining space by using electromagnetic wave CT

An evaluation method and electromagnetic wave technology, applied in data processing applications, instruments, resources, etc., to achieve the effect of ensuring effectiveness, simple detection process, and wide adaptability

Active Publication Date: 2018-12-07
TIANDI SCI & TECH CO LTD
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Problems solved by technology

[0004] In order to solve the technical problem of accurately evaluating the impact risk of surrounding rock in the near field of mining space, the present invention provides a method for evaluating the risk of impact of surrounding rock in the near field of mining space using electromagnetic wave CT

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  • Method for evaluating impact risk of near-field surrounding rocks in mining space by using electromagnetic wave CT
  • Method for evaluating impact risk of near-field surrounding rocks in mining space by using electromagnetic wave CT
  • Method for evaluating impact risk of near-field surrounding rocks in mining space by using electromagnetic wave CT

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Embodiment Construction

[0039] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0040] figure 1 What is shown is a preferred embodiment of the method for evaluating the impact risk of surrounding rock in the near field of mining space using electromagnetic wave CT in the present invention.

[0041] The method for evaluating the impact risk of surrounding rock in the near field of mining space using electromagnetic wave CT comprises the following steps:

[0042] (a) On the same side of the surrounding rock in the mining space 1, the launch hole 2 and the receiving hole 3 are constructed according to the elevation angle θ. The height of the two boreholes from the bottom plate is the same and parallel to each other. The area between them constitutes the detection area 6;

[0043](b) Put the transmitting end 4 and th...

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Abstract

The invention relates to a method for evaluating the impact risk of near-field surrounding rocks in a mining space by using electromagnetic wave CT, which comprises the steps of constructing a transmitting hole and a receiving hole which are at the same height from a bottom plate and mutually parallel according to a elevation angle [alpha] on the same lateral wall of the mining space, and respectively placing a transmitting end and a receiving end of the electromagnetic wave CT in the two holes so as to obtain the field intensity of electromagnetic waves after passing through a detection areaand being attenuated, obtaining a two-dimensional distribution matrix of the electromagnetic wave absorption coefficient through field intensity inversion, building an impact risk evaluation model based on the electromagnetic wave CT, obtaining a two-dimensional distribution cloud map of impact risk indexes of the detection area, and completing the evaluation for the impact risk of the near-fieldsurrounding rocks in the mining space by using the electromagnetic wave CT. The method can perform accurate evaluation on the impact risk of the near-field surrounding rocks in the mining space, and has high guidance significance for prevention and control of rock burst.

Description

technical field [0001] The invention relates to a method for evaluating the impact risk of surrounding rock in the near field of mining space by using electromagnetic wave CT. Background technique [0002] With the gradual increase of coal mine mining intensity and depth in my country, the number of mines with rock burst disasters has increased year by year, and the surrounding rock near the mining space is the main place where rock burst disasters appear. Accurate evaluation of the risk of rock burst is of great practical significance to the prevention and control of rock burst. The near-field surrounding rock usually refers to the surrounding rock that is less than 30m away from the excavation space; for example, the coal pillar area, the excavation face, the intersection of the roadway, and the advance support area, etc., which are common impact hazard areas in the near-field surrounding rock. [0003] In the impact risk assessment method of surrounding rock near the exca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/0635G06Q50/02
Inventor 潘俊锋刘少虹李春睿王书文夏永学秦子晗
Owner TIANDI SCI & TECH CO LTD
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