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《Rock and Soil Mechanics》 2007-07
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Forecasting study on fracturing of overburden strata of coal face by microseism monitoring technology

YANG Yong-jie,CHEN Shao-jie,ZHANG Xing-min,PANG Huan-dong(Key Laboratory of Mine Disaster Prevention and Control,Shandong University of Science and Technology,Qingdao 266510,China)  
Micro seismic phenomenon is an important information before fracturing of rock mass;studies of micro seismic characteristics of the fracturing process of rock mass are of important significance for prediction of fracturing and destabilizing of rock mass and guaranteeing the safety of mine production.The coal mine underground micro seismic monitoring system which is made by Shandong University of Science and Technology is used to monitor the behavior of overburden strata of mining face.The close relationship between evolvement of micro seismic and fracturing of the overburden strata is proved by location of the monitored micro seismic events.The fracturing of rock mass can be precisely predicted according to the change law of finite difference of frequency,energy and distance of micro seismic events.This is of important instructing significance for prediction of rupture and instability of the rock mass underground coal mine by micro seismic monitor technology.
【Fund】: 国家自然科学基金项目(No.50474029)
【CateGory Index】: TD326
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