中国矿山工程

The step slope formed in the upper part of an open pit is filled with loose loose body, which has some hidden danger. In order to control the influence of subsequent blasting operation on slope stability, vibration test was carried out in the slope during blasting operation. ANSYS numerical simulation software is used to simulate the dynamic response law of the slope under blasting vibration, study the change characteristics of effective stress and plastic strain, and prove the reliability of the simulation by comparing the acceleration and velocity of the slope bottom, and then determine and analyze the safety and stability of the slope under the dynamic vibration load of blasting operation. The influence of seismic wave on the stability of loose accumulation slope under blasting operation is studied. The results show that the slope stability is good under the current blasting load, and the slope is in a stable state after blasting, which can provide a basis for the subsequent correction of mine blasting parameters.