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Research on inversion high mining pressure distribution and technology of preventing dynamic disasters by MS monitoring in longwall face

引用

Journal of Coal Science & Engineering(China) 2009年第3期15卷 252-257页

作者： CHENG Yun-hai JIANG Fu-xing ZOU Yin-hui School of mining and Safety Engineering Anhui University of Technology Huainan 232001 China College of Civil and Environmental Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Coal Resources and Safe mining China University of Mining and Technology （Beijing） Beijing 100083 China Chongqing Research Institute China Coal Research Institute Chongqing 400037 China

Under two rock strata combination conditions, over 10,000 microseismic events were received with microseismic location monitoring technology which possessed by the author＇s studying team, used in fully mechanized coal face of Huafeng Mine of Xinwen Coal mining Group Co., Shandong Province. On the basis of the achievement of the location results, the conclusions were drawn as follows： On the basis of the achievement of 3D strata fracturing situation and the section plane of microseimic events in different areas, the relationship between spatial structure of overlying strata and mining pressure field was found, and we might describe distribution range of dynamic pressure of advance pressure and lateral stress around long face, and range of structure ad-tivation. Quantitative guidance to prevent dynamic disasters was provided. The practice in coal mine got a effective results. According to the FLAG3D soft numerical simulation of diameter drilling hole （the diameter is 300 mm） to relieve pressure in specified geological condition in Huafeng Mine, the right distance of two dirlls is 2.5 m and the right depth is 12 m. The research pro-vided basic guiding and practical experiences for the underground microseismic monitoring and disaster prevention in side slopes or tunnels engineering.

关键词： microseismic monitoring high-precision locating rock cracking mining high pres-sure coal bump demolition of danger

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