Study to Technology of Rock-burst Prevention and Treatment Based on Controlled Blasting
The blasting excavation-induced disturbance has important influence on the occurrence, intensity and scale of rock burst. So the technology of rock-burst prevention and treatment based on controlled blasting is advised after studying the composition of blasting excavation disturbance under high geo-stress condition. The result indicated that the vibration induced by in-situ stress dynamic unloading during blasting could be an important component of the total vibration induced by the blasting excavation under a certain high geo-stress level. Thus two main rules are followed to control the blasting excavationinduced disturbance: controlling the disturbance resulted by blasting load and reducing the dynamic unloading disturbance,and finally achieves the goal of preventing rock burst. The technology of rock-burst prevention and treatment based on controlled blasting includes the stress-rescission blasting, optimization of boreholes arrangement and initiation network. These measures are proved to be available in the engineering practices given in the end of this paper.
controlled blasting ezcavation-induced disturbance rock-burst
YAN Peng LI Tianbin LU Wenbo CHEN Ming SHU Daqiang
East China Investigation and Design Institution Under CHECC, Hangzhou, China State Key Laboratory of State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Te State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan,
国际会议
The Second Asian-Pacific Symposium on Blasting Techniques(第二届亚太地区爆破技术研讨会)
大连
英文
596-602
2009-07-01（万方平台首次上网日期，不代表论文的发表时间）