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| Research and application of transient electromagnetic detection in underground roadway of coal mine under strong interference environment |
| Zhao Yongliang |
| 1. Hebei Coal Research Institute CO., LTD.，Xingtai 054000，China; 2. Key Laboratory of Mine Water Disaster Detection and Prevention and Control, Xingtai 054000，China；3.Hebei Engineering Research Center of Mine Geophysical Exploration, Xingtai 054000，China |
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Abstract In order to improve the accuracy of underground transient electromagnetic water damage detection and reduce the influence of the metal and charged body in the underground roadway on the detection results during the detection process, through physical simulation, numerical simulation and other technical means, the acquisition and observation system of transient electromagnetic measurement was optimized, and the quality of detected electromagnetic data was evaluated. Combined with the processing and correction of transient electromagnetic data forward and inverse algorithm software, the interpretation accuracy of water-bearing abnormal body in coal mine was improved, and the hidden water-bearing structure in front or side of excavation was predicted in time, which provided a strong technical guarantee for safe excavation of coal mine.
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