THE DYNAMIC DISTURBANCE AS A MECHANISM TO TRIGGER THE ROCKBURST AROUND THE UNDERGROUND OPENING
Rock bursts occur when a highly stressed rock mass at depth is triggered by a dynamic disturbance. The Realistic Failure Process Analysis (RFPA) numerically simulates the occurrence of rock bursts around the deep rock tunnel, which arc triggered by a dynamic disturbance. The effects of waveforms from dynamic disturbances and tunnel depth on the occurrence of rock bursts are studied. The numerical results indicate that dynamic disturbances are one of the most important mechanisms that govern the stability of underground openings. When tensile stress induced by static in-situ stress caused by dynamic disturbance arc superposed at a location to enhance the total tensile stress, the contribution of dynamic disturbance to trigger rock bursts becomes greater with the increase of tunnel depth.
WAN-CHENG ZHU CHUN-AN TANG YU-JUN ZUO SHAN-YONG WANG
Center for Rock Instability and Seismicity Research, Box 138, Northeastern University Shenyang, 1100 Center for Rock Instability and Seismicity Research, Dalian University of Technology Dalian, 116024, Research Center for Numerical Tests on Material Failure, Dalian University Dalian, 116622, P.R.China Centre for Geotechnical and Materials Modelling, Civil, Surveying and Environmental Engineering The
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
381-386
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）