Application of in-seam wave technology in geological anomaly detection of Yangquan Mining Area

FAN Deyuan; WU Guoqing; MA Yanlong

doi:10.3969/j.issn.1001-1986.2021.04.005

Volume 49 Issue 4

Sep. 2021

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COAL GEOLOGY & EXPLORATION > 2021 > 49(4): 33-39. > DOI: 10.3969/j.issn.1001-1986.2021.04.005

FAN Deyuan, WU Guoqing, MA Yanlong. Application of in-seam wave technology in geological anomaly detection of Yangquan Mining Area[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(4): 33-39. DOI: 10.3969/j.issn.1001-1986.2021.04.005

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Application of in-seam wave technology in geological anomaly detection of Yangquan Mining Area

1.
Huayang New Material Technology Group Co., Ltd., Yangquan 045000, China
2.
Xi'an Research Institute Co. Ltd., China Coal Technology and Engineering Group Corp., Xi'an 710077, China

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Received Date: April 13, 2021
Revised Date: June 27, 2021
Available Online: September 09, 2021
Published Date: August 24, 2021

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Abstract

By reviewing the application history of in-seam wave seismic detection technology in Yangquan Mining Area in recent years, this paper summarizes the characteristics of in-seam wave in Yangquan Mining Area, and analyzes the in-seam wave detection effect of geological anomalies such as faults and collapse columns in Yangquan Mining Area. The characteristics of in-seam waves in various regions are summarized, and the propagation patterns and the interpretation methods of in-seam wave in the regions are proposed. The results show that there are more than 200 working faces adopted in-seam seismic detection in Yangquan Mining Area, among which 58 working faces are used in No.15 coal seam, which mainly solves the detection problems of geological abnormal bodies such as faults, collapse columns, deflection, roof and floor breakage, and the overall accuracy rate of detection results is more than 82.2%. The characteristics of in-seam waves in Yangquan Mining Area are as follows. In-seam wave development is moderate to good in coal seams of 3-6 m thickness. In the south of Shanxi where the coal thickness is less than 2 m, in-seam wave is generally developed. The Airy velocity of in-seam waves are 960-1 000 m/s, and there is little difference in different regions. The Airy frequency is related to coal thickness, and the thicker the coal seam, the lower the Airy frequency. In the same coal seams, differences of velocity and frequency is not significant. According to the results of mining verification, the effect of detection from different coal seams and regions are quite different. For detection of geological anomalies by in-seam waves, suggestions are given from data collection, processing and comprehensive interpretation. The detection methods need be strengthened in the future to detect more geological disasters such as structural coal, gas enrichment areas, and stress anomalies. With extension of its application, in-seam wave technology will provides reliable geological protection for safe production and promote transparency for working faces of coal mines.
- in-seam wave detection technology,
- Yangquan Mining Area,
- in-seam wave characteristics,
- geological anomaly,
- detection effect

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Application of in-seam wave technology in geological anomaly detection of Yangquan Mining Area

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