爆破震动对土质边坡动力稳定性影响研究

Study about soil slope dynamic stability due to blasting vibration

采用拟静力化的惯性力法,利用改进了的条分法来计算主动土压力,并考虑爆破地震的时程效应,提出了已有边坡在爆破过程中的动力稳定性系数的新的计算方法。实例证明,所得计算结果综合考虑了爆破震动波传播过程的衰减、频谱结构及相位差等因素的影响,因此该方法在土质边坡稳定分析中与拟静力法相比更具理论基础,其结果也更接近工程实际。

Considering the time distance effect of blasting vibration slice method, this paper puts forward an analytic method of slope and the quasi-static method, and making use of the improved stability under blasting vibration; and gets a new computing technology of dynamic stability of slopes under blasting vibration. The calculation of an actual engineering example shows that the method is more reasonable and closer to the actuality than the conventional methods.