A method for detecting coal seam roof-floor interface using borehole radar in underground coal mine

A technology of drilling radar and bottom plate, which is applied in the fields of electromagnetic wave detection, electric/magnetic detection for well logging records, and re-radiation, and can solve the problem of poor coal mine working face environment, complex geological conditions, and poor engineering applications etc.

Active Publication Date: 2021-12-28
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 rock identification methods poor in adaptability and identification accuracy, and have not been well applied in engineering.

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  • A method for detecting coal seam roof-floor interface using borehole radar in underground coal mine
  • A method for detecting coal seam roof-floor interface using borehole radar in underground coal mine
  • A method for detecting coal seam roof-floor interface 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 the roof and floor interface of a coal seam by using a borehole radar in a coal mine. The method includes: collecting radar wave signals; forming a time-domain borehole radar profile according to the radar wave signals; Interface distance: According to the drilling distance of the working face, the coal seam interface distance of the top and the floor and the radar wave signal, determine the event axis of the reflected wave of the roof and the floor; The time-domain radar profiles of the top and bottom plates are used to form the interface images corresponding to the top and bottom plates. According to the solution of the present invention, according to the event axis of the reflected wave of the top and the bottom plate and the time domain drilling radar profile, the time domain radar profile corresponding to the top and the bottom plate is determined; according to the time domain radar profile corresponding to the top and the bottom plate, the interface corresponding to the top and the bottom plate is formed The image realizes high-accuracy and high-safety coal seam roof and floor interface detection.

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...

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Application Information

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Patent Type & Authority Patents(China)
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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