【摘要】 开挖减震槽是降低爆破地震效应的手段之一。通过数值模拟 ,研究了二维和三维情况下减震槽的减震效果。比较了爆破开挖面与减震槽距离变化 ,抽槽开挖和扩挖爆破过程 ,采用深孔减震等不同条件下减震槽的减震率。更多还原

【Abstract】 The excavation of vibration-isolating slot is one of the possible measures to reduce the influence of blasting vibration. Based on the numerical simulation under two-dimension and three-dimension, the effect of the vibration-isolating is studied in the paper. And the influences of the following conditions on the vibration-isolating ratio are analyzed, e.g. (a) different distances between blasting point and vibration-isolating slot, (b)under cut blasting and enlarge excavation, (c) when deep holes is used as a vibration-isolating slot. Some important and enlightening conclusions are made.更多还原