基于关联因素前兆监测的冲击地压发生区域与时期初探  

PROBING INTO THE MAIN OCCURRED AREA AND PERIOD OF ROCKBURST BASED ON PRECURSORY MONITORING OF ASSOCIATED FACTORS

作　　者：潘俊锋[1,2] 毛德兵[1,2] 夏永学[1,2] 杜涛涛[1,2] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]煤炭科学研究总院开采设计研究分院,北京100013

出　　处：《岩石力学与工程学报》2012年第8期1650-1656,共7页Chinese Journal of Rock Mechanics and Engineering

基　　金：国家重点基础研究发展计划(973)项目(2010CB226806);国家自然科学基金青年基金项目(51104086)

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。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.

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 

分 类 号：TD32[矿业工程—矿井建设]