基于关联因素前兆监测的冲击地压发生区域与时期初探

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摘要为对后续开采活动起到警示作用，在强冲击危险区域，采用现场实测的方法得到冲击地压、微震、顶板破断以及采动应力分布等数据，并进行关联规律分析。分析结果表明：超前支承压力影响区域是冲击地压、微震事件的主要发生区域，但冲击地压还会发生在超前支承压力影响之外的微震活动区；基本顶垮断周期、本工作面与邻近采空区沟通导致高位岩层见方垮断周期以及微震活动周期是冲击地压发生的可能时期；以上3个周期近似同步时，超前支承压力影响范围内冲击地压发生概率明显增加。

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关键词 ：采矿工程, 冲击地压, 微震, 顶板断裂, 支承压力, 周期来压, 采空区见方

Abstract：In order to serve as a warning for the following mining activities，the monitoring data of rock burst，microseismic，roof breaking and stress distribution induced by mining were got；and the relating rules with each other were analyzed through field measurement method，in a strong dangerous area of rock bursting. The analysis results show that the affected area of advanced abutment pressure are the main occurring area of rockburst and microseismicity；but rock burst may occur in the area of microseismic activity where out of the affected area of advanced abutment pressure. Rock burst may occur during the period of main roof breaking，the period of high rock stratum breaking when the shape of goaf is approximate to square，and the period of microseismicity. When all the above three period are approximately synchronous，the probability of occurrence of rock burst will increase obviously in the affected area of advanced abutment pressure.

Key words： mining engineering rockburst microseismicity roof breaking abutment pressure periodic roof pressure the shape of goaf approximate to square

收稿日期: 2012-04-16

引用本文:

潘俊锋1，2，毛德兵1，2，夏永学1，2，杜涛涛1，2. 基于关联因素前兆监测的冲击地压发生区域与时期初探[J]. 岩石力学与工程学报, 2012, 31(8): 1650-1656.
PAN Junfeng1，2，MAO Debing1，2，XIA Yongxue1，2，DU Taotao1，2. PROBING INTO THE MAIN OCCURRED AREA AND PERIOD OF ROCKBURST BASED ON PRECURSORY MONITORING OF ASSOCIATED FACTORS. , 2012, 31(8): 1650-1656.

链接本文:

http://www.rockmech.org/CN/Y2012/V31/I8/1650

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