Research on the influence analysis of Radar traveling time tomography in mine and parameter optimization

Sun Minghao; Xu Xianlei; Zhang Di

doi:10.19606/j.cnki.jmst.2022.01.013

Volume 7 Issue 1

Feb. 2022

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Article Navigation > Journal of Mining Science and Technology > 2022 > 7(1): 134-142

Sun Minghao, Xu Xianlei, Zhang Di. Research on the influence analysis of Radar traveling time tomography in mine and parameter optimization[J]. Journal of Mining Science and Technology, 2022, 7(1): 134-142. doi: 10.19606/j.cnki.jmst.2022.01.013

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Research on the influence analysis of Radar traveling time tomography in mine and parameter optimization

doi: 10.19606/j.cnki.jmst.2022.01.013

Sun Minghao^{1, 3
,},
Xu Xianlei^{1, 2},
Zhang Di¹

1.
State Key Laboratory of Coal Resources and Safe Mining, Beijing 100083, China
2.
State Key Laboratory of Water Resources Protection and Utilization in Coal Mining, Beijing 100005, China
3.
College of Geoscience and Surveying Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China

Received Date: 2021-09-06
Rev Recd Date: 2021-12-02
Publish Date: 2022-02-01

Abstract

Abstract

Concealed hazard sources in the working face are the main hidden danger for safe production in the coal mines, and the Radar Travel Time Tomography technology can realize the high-precision detection of the concealed hazard source in the large-span working face.This paper puts forward an evaluation criteria for tomographic accuracy, including the evaluation indicators of variance of velocity difference between inversion velocity field and actual velocity field, deviation degree of the inversion center of the anomalous body, and deviation degree of the size of the anomalous body.Then the influence of radar traveling time tomography by point spacing, transmitting angle and inversion grid in mine is analyzed through forward modeling, resulting in the optimized parameters for observation system and inversion.Finally, the optimized parameters are employed to carry out some field verification experiments, and the results show that the anomalous body can be detected affectively for the working face within 100 m span, providing effective technical support for the rapid and precise detection of concealed hazard sources in large-span working face in mine area.
- coal mine,
- concealed hazard sources,
- geological radar,
- travel time tomography,
- accuracy analysis,
- parameter optimization

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References

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Research on the influence analysis of Radar traveling time tomography in mine and parameter optimization

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