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| Analysis and research on overburden structure and microseismic characteristics of full-mechanized caving roadway |
| Wang Guoju1,2 |
| 1. Hebei Coal Research Institute Co., Ltd., Xingtai 054000, China; 2. Hebei Province Key Laboratory of
Mine Microseismic, Xingtai 054000, China |
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Abstract No.9205 Face in North shaft of Dongpang Mine was taken as the research background, the width of the protective coal pillar was determined based on the fracture mechanics model of the basic roof of goaf side and the limit equilibrium theory method, and the overburden structure characteristics of goaf roadway were obtained. The high-precision microseismic monitoring system was used for monitoring. The field microseismic monitoring showed that the microseismic events were densely distributed in the goaf during mining, and the theoretical analysis and field monitoring had good consistency. The research results provided theoretical support for the roof management of other goaf in North shaft of Dongpang Mine, as well as the prediction and control of strong mine pressure.
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