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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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

Received: 16 April 2012

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

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