Numerical Simulation Analysis of the Effect of Pre-splitting Crack Parameters on Damping Vibration
The effect of pre-splitting crack parameters on damping vibration is analyzed quantificationally by numerical simulation, the influence rules of pre- splitting crack parameters on propagation of blasting seismic wave are found. The results show that the effect of damping vibration increases with the increase of pre-splitting crack width in a scope (namely r≤r0, r0 is a constant), when r is bigger than r0, there is little influence on damping vibration along with the increase of width of pre- splitting crack. The relation expressions between the effect of pre-splitting crack on damping vibration and the length, depth of pre-splitting crack, distance between blasting source and pre-splitting crack are fitted by Matlab soft, which can be a reference for forecasting the effect of damping vibration in practice.
pre-splitting blasting pre-splitting crack blasting seismic wave vibration isolation and damping numerical simulation
LIU Yanying
Open Pit Mine, Jinduicheng Molybdenum Mining Corporation, Huayin 714102, Shaanxi, China
国际会议
西安
英文
752-755
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）