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高边坡在爆破开挖时的动力稳定问题急待解决,采用数值方法进行分析前需要由大量爆破监测资料确定出加速度峰值传播规律以及典型加速度时程,作为动力荷载输入.但是,监测资料往往是以振动速度为指标的,针对两者参数不匹配的问题,本文提出了一种新的确定爆破荷载的统计分析方法,并成功应用到三峡船闸高边坡的爆破稳定分析中.
The dynamic stability of high slope during blasting excavation is urgent to be solved. Before numerical analysis, a large number of blasting monitoring data are needed to determine the peak acceleration propagation and the typical acceleration time history as the input of dynamic load. However, the monitoring data is often based on the vibration velocity. In view of the mismatch between the two parameters, a new statistical analysis method for determining the blasting load is proposed and applied to the blasting stability analysis of the high slope of the Three Gorges Project in.