The technology research about hidden danger identification of tunnel roof fall
In underground coal mines, the tunnel surrounding rock conditions changed greatly, roof litho logy even happened thinning and disappearing within the range of tens of meters, so that roof stability changed. In order to guarantee the safety of tunnel, we often design more conservative support parameters, that will create the question that many. periods of tunnel support excessively and the question that some periods of tunnel support insufficiently due to the failure to discover hidden danger of roof fall in time. On the basis of field application and according to the theory research, divide the roof caving hidden danger of roof area by roof structure detection instrumentation, to find a area which influencing mine production safety and to vital design and monitoring this area, this can effectively prevent roadway roof caving accidents. The field observation results show that the division hidden danger of roof caving method of based on the roof structure detection and peek into the roof have a higher similar rate with underground roof strata conditions, and have a great significance to the coal mine safety production.
hidden danger of roof fall rock structure detection instrumentation risk identification
LIU Hongtao MA Nianjie GONG Peinuan ZHANG Canglong ZHAO Hua
China University of Mining and Technology, Beijing, School of Safety and Resource Engineering, Beijing 100083
国际会议
The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)
北京
英文
1341-1345
2011-10-27（万方平台首次上网日期，不代表论文的发表时间）