Method for detecting coal seam roof and floor interface by using borehole radar in underground coal mine

A drilling radar and bottom plate technology, which is used in electromagnetic wave detection, electrical/magnetic detection for logging records, and re-radiation, etc., can solve complex geological conditions, harsh coal mine working face environment, and poor Engineering application, etc.

Active Publication Date: 2021-05-07
JILIN UNIV
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Problems solved by technology

[0003] However, the harsh environment and complex geological conditions of the coal mine face make the existing coal roc

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  • Method for detecting coal seam roof and floor interface by using borehole radar in underground coal mine
  • Method for detecting coal seam roof and floor interface by using borehole radar in underground coal mine
  • Method for detecting coal seam roof and floor interface by using borehole radar in underground coal mine

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Embodiment Construction

[0065] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0066] The harsh environment and complex geological conditions of the coal mine working face make the existing coal rock identification methods poor in adaptability and identification accuracy, and have not been well applied in engineering. In actual production, it is still relying on the driver of the shearer to manually adjust the height of the shearer drum to cut the top and bottom through visual and auditory judgment. The adjustment accuracy is low and the labor intensity is high.

[0067] The invention provides a method for detecting the roof-bottom interface of a coal seam by using a borehole radar in a coal mine. According to the radar wave signal, a time-domain borehole radar profile is formed. , the time-domain radar profile corresponding to the bottom...

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Abstract

The invention relates to a method for detecting a coal seam roof and floor interface by using a borehole radar in an underground coal mine. The method comprises the following steps of: acquiring a radar wave signal; forming a time domain borehole radar profile according to the radar wave signal; acquiring the distance between a working face drill hole and a roof and floor coal seam interface; determining roof and floor reflection wave events according to the distance between the working face drill hole and the roof and floor coal seam interface and the radar wave signal; determining time domain radar profiles corresponding to the roof and the floor according to the roof and floor reflection wave events and the time domain borehole radar profile; and forming interface images corresponding to the roof and floor according to the time domain radar profiles corresponding to the roof and floor. According to the scheme of the invention, the time domain radar profiles corresponding to the roof and floor are determined according to the roof and floor reflection wave events and time domain borehole radar profiles; according to the time domain radar profiles corresponding to the roof and floor, the interface images corresponding to the roof and floor are formed, and high-accuracy and high-safety coal seam roof and floor interface detection is achieved.

Description

technical field [0001] The invention relates to the technical field of coal mining engineering, in particular to a method for detecting the roof-bottom interface of a coal seam by using a borehole radar in a coal mine. Background technique [0002] The unmanned working face is the development direction of coal mining, which requires the shearer to automatically and accurately adjust the height of the drum according to the coal-rock boundary to realize coal mining automation, and the recognition of the coal-rock boundary plays a vital role. Scientific researchers have carried out a lot of research, and proposed based on radioactive detection, based on memory cutting, based on image recognition, based on vibration testing, based on electromagnetic testing, based on optical detection, based on thermal measurement, based on optical fiber, based on cutting force response recognition A variety of coal-rock interface identification methods with other technologies. [0003] However...

Claims

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Application Information

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IPC IPC(8): G01V3/30G01V3/36G01V3/38
CPCG01V3/30G01V3/36G01V3/38
Inventor 刘四新宋梓豪邓莉鹿琪李宏卿
Owner JILIN UNIV
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