Dynamic Response of Slope with Fault Under Blast Vibration
LI Yi1, XIA Xiangsheng2, XU Jiye1, ZHANG Liangbing1, HUANG Yonghui3, LI Yuanyuan4,5, ZHANG Zhiyu4,5
1.Design and Research Institute of Mining Co Ltd, Panzhihua Iron and Steel Group, Panzhihua 617000, Sichuan, China;
2.Panzhihua New Baima Mining Co Ltd, Panzhihua 617000, Sichuan, China;
3.Faculty of Electric Power Engineering,Kunming University of Science and Technology, Kunming 650093, Yunnan, China;
4.Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;
5.Yunnan Key Laboratoryof Sino-German Blue Mining and Utilization of Special Underground Space, Kunming 650093, Yunnan, China
Abstract：The stability of slope with fault under the impact of blast-induced seismic wave was analyzed by using simulation to study the dynamic response of slope with different fault thickness under the impact of explosive vibration. The results show that there exists elevation amplification effect when blast-induced seismic wave propagates along slope surface and fault area. The thicker the fault, the faster the attenuation of blast-induced seismic wave. As the fault becomes thicker, the displacement of slope under the action of blast-induced vibration gradually increases, and the overall deformation resistance becomes smaller. Under the action of blast vibration, the fault with different thickness obviously brings different influence to slope stability. With the fault thickness of 2-8 m, the slope stability decreases continuously and rapidly, and tends to be stable as the fault thickness exceeds 8 m.
2024, Vol. 44 
