爆破开挖扰动下顺层边坡动力响应规律数值模拟研究

Research on Numerical Simulation of Dynamic Response Law of Bedding Slope under Blasting Excavation Disturbance

以宜昭高速公路工程取料场爆破开挖产生的岩石边坡为计算实例,结合通用有限元软件ABAQUS对爆破荷载作用下岩质边坡开挖时的振动响应进行三维数值模拟研究,利用爆炸等效荷载施加方法,结果得到了岩质边坡支护完成后,在爆破荷载作用下支护结构面上质点振动速度变化规律和应力特性。

In this paper,the rock slope generated by blasting excavation at the feeding yard of Yizhao Expressway Project is taken as an example for calculation.The general finite element software ABAQUS carries out threedimensional numerical simulation research on vibration response of rock slope excavation under blasting load.By using the method of applying explosive equivalent load,the variation law of particle vibration velocity and stress characteristics on support structure surface under blasting load are obtained after the support of rock slope is completed.