Investigation on the inducing factors of coal bursts under complicated geological environment in Yima mining area
WANG Hongwei1，2，JIANG Yaodong1，2，DENG Daixin1，ZHANG Dengqiang1，LU Jinguo3， ZENG Xiantao1，4
(1. School of Mechanics，Architecture and Civil Engineering，China University of Mining and Technology，Beijing 100083，China；2. State Key Laboratory for Geomechanics and Deep Underground Engineering，China University of Mining and Technology，Beijing 100083，China；3. College of Resources and Safety Engineering，China University of Mining and Technology，Beijing 100083，China；4. JCHC Mining Management Co. Ltd.，Beijing 101500，China)
Based on the investigation on high burst proneness，high in-situ stress，F16 thrust fault and conglomerate roof，the contributing factors，characteristics and mechanism of coal bursts in Yima mining area are studied. It is indicated that the high burst proneness and high in-situ stress are the major intrinsic factors to induce coal burst. The distribution of horizontal tectonic stress under the existence of F16 trust fault is extremely inhomogeneous, which makes the stress concentration and energy surge in the high stress environment and the surrounding area. The roof and fault are in the unstable conditions under the influence of conglomerate roof separated by F16 thrust fault. These are the main external factors to induce coal burst in Yima mining area.. Therefore，the electromagneticradiation and support resistance could be observed as the process of increase，decrease，increase again and decrease again before the occurrence of coal bursts. The sudden decrease of indicator could be identifies as precursoryinformation of coal bursts.
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2017, Vol. 36 
