锦屏一级水电站高边坡开挖爆破动力稳定分析  

DYNAMIC STABILITY ANALYSIS FOR EXCAVATION BLASTING OF HIGH SLOPE OF JINPING-1 HYDROPOWER STATION

作　　者：王秀杰[1] 朱学贤 吴新霞[1] 张春燕 熊新宇 

机构地区：[1]长江水利委员会长江科学院,武汉430010 [2]长江水利委员会长江勘测规划设计研究院,武汉430010

出　　处：《工程爆破》2010年第2期27-30,共4页Engineering Blasting

摘　　要：将时程法引入滑裂面的抗剪断强度比值法中,以某个爆破步长进行整个爆破计算,得到了潜在滑动体的稳定系数随爆破振动荷载作用下的变化过程。利用该方法对锦屏一级水电站左岸EL.1885m以上边坡开挖爆破进行动力稳定性分析,计算结果较好地反映了边坡稳定性在爆破过程中的变化过程,为优化爆破参数、指导减振措施和边坡支护提供了依据。本研究的成果对以后类似的特高陡边坡爆破开挖分析具有积极的指导意义。With the introduction of time history analysis method to ratio method of shearing strength of rock, the stability factor of the potential slide mass was achieved under the effect of blasting vibration load by analyzing the whole blasting vibration process at a certain time step. High slope excavation blasting at the left bank over EL. 1885m of Jinping-I Hydropower station was evaluated by using ratio method of shearing strength about dynamic stability, which well reflected the variation process of the slope stability during excavation blasting, and provided a reference for the optimization of blasting parameters, guidance of vibration reducing measures and slope retaining. The results were very significant for analyzing similar highslope excavation blasting work in the future.

关 键 词：时程法 高边坡 开挖爆破 动力稳定分析 锦屏一级水电站 

分 类 号：TU33[建筑科学—结构工程]