SAFETY CRITERIA OF BLASTING VIBRATION IN HYDROPOWER ENGINEERING AND SEVERAL KEY PROBLEMS IN THEIR APPLICATION
LU Wenbo1，LI Haibo2，CHEN Ming1，ZHOU Chuangbing1，WU Xinxia3
(1. State Key Laboratory of Water Resources and Hydropower Engineering Science，Wuhan University，Wuhan，Hubei 430072，China；2. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；3. Yangtze River Scientific Research Institute，Wuhan，Hubei 430030，China)
Abstract：The status and progress of the mechanism of blasting vibration-induced failure or damage，the evaluation method of dynamic stability for rock slope and surrounding rock mass of underground caverns under blasting vibration，and the influence of blasting vibration on early-aged concrete，etc.，are introduced and analyzed. The domestic safety criteria of blasting vibration and permitted standard of blasting velocity for high rock slope，underground caverns，foundation rock mass and early-aged concrete adopted in field of hydropower engineering are presented，which are compared with those employed in fields of mining. Main problems existing in the study of the damage mechanism induced by blasting vibration and deficiencies of currently adopted safety criteria are analyzed and discussed such as no distinction between different damage mechanisms induced by propagation of blasting seismic wave in rock mass and by dynamic response of rock slope and no consideration of influence of vibration frequency and duration on the adopted safety criteria. Finally，some proposals are given to further study in the fields of damage mechanism of blasting vibration，comprehensive safety criteria expressing blasting vibration incorporating factors of vibration amplitude，frequency and duration，allowable vibration standard for early-aged concrete considering the influence of thermal stress，etc..
卢文波，李海波，陈明，周创兵，吴新霞. 水电工程爆破振动安全判据及应用中的几个关键问题[J]. 岩石力学与工程学报, 2009, 28(08): 1513-1520.
LU Wenbo1，LI Haibo2，CHEN Ming1，ZHOU Chuangbing1，WU Xinxia3 . SAFETY CRITERIA OF BLASTING VIBRATION IN HYDROPOWER ENGINEERING AND SEVERAL KEY PROBLEMS IN THEIR APPLICATION. , 2009, 28(08): 1513-1520.
