Multi-wave joint detection of unfavorable geological bodies in coal mining face

MA Zhichao; DOU Wenwu; LI Wen; LIAN Yuguang; LI Hanchao; LI Yanchuan; SHEN Guanghui; CHENG Hailin

doi:10.16031/j.cnki.issn.1003-8035.202204019

2023 Vol. 34, No. 3

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Article navigation > The Chinese Journal of Geological Hazard and Control > 2023 > 34(3): 83-92

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MA Zhichao, DOU Wenwu, LI Wen, LIAN Yuguang, LI Hanchao, LI Yanchuan, SHEN Guanghui, CHENG Hailin. Multi-wave joint detection of unfavorable geological bodies in coal mining face[J]. The Chinese Journal of Geological Hazard and Control, 2023, 34(3): 83-92. doi: 10.16031/j.cnki.issn.1003-8035.202204019

Citation:

MA Zhichao, DOU Wenwu, LI Wen, LIAN Yuguang, LI Hanchao, LI Yanchuan, SHEN Guanghui, CHENG Hailin. Multi-wave joint detection of unfavorable geological bodies in coal mining face[J]. The Chinese Journal of Geological Hazard and Control, 2023, 34(3): 83-92. doi: 10.16031/j.cnki.issn.1003-8035.202204019

Multi-wave joint detection of unfavorable geological bodies in coal mining face

1.
Mine Safety Technology Branch of China Coal Research Institute, Beijing　100013, China
2.
State Key Laboratory of Coal Mining and Clean Utilization （China Coal Research Institute）, Beijing　100013, China
3.
Beijing Mine Safety Engineering Technology Research Center, Beijing　100013, China
4.
Institute of Technology, Shanxi Jincheng Anthracite Mining Group, Jincheng, Shanxi　048006, China
5.
Shanxi Shiquan Coal Industry Coal Ltd., Changzhi, Shanxi　046200, China

Received Date: 18 April 2022

Revised Date: 30 July 2022

Accepted Date: 17 August 2022

Publish Date: 25 June 2023

Abstract

Abstract

The main factors restricting the mining speed of the working face in Yuenan Coal Mine are the water-rich area of limestone above the coal seam and the internal geological concealed structure. The transparent detection of the working face is carried out by using transient electromagnetic method, radio wave perspective and slot wave seismic geophysical methods. In the process of detection, it is found that the induced voltage received by the secondary wave field of transient electromagnetic method is more sensitive to the area of rich water and low resistance, and the lateral situation of coal seam can be identified by observing the energy attenuation emitted and received by radio wave perspective. The integrated analysis of envelope amplitude, spectrum and dispersion curve of in-seam wave seismic imaging has good effect on identifying fault strike. Through the identification of the comprehensive response characteristics of the abnormal region by the induction factor in the multi-wave field, the plane map is superimposed according to the abnormal area delineated by the multi-source wave field, and a variety of abnormal characteristics are shown synthetically, which can effectively identify the correlation between the water-rich area of the roof of the working face and the internal structural area of the coal seam, and clearly judge the existence of the water channel. The test results show that the geophysical method can find out the internal abnormal area of the mining face and predict in advance, and the combined detection of various geophysical methods can provide a reference basis for similar geological conditions in the future.
- water-rich area /
- concealed structure /
- transient electromagnetic method /
- radio wave perspective /
- in seam seismic /
- induction factor /
- wave field /
- prediction

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References

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