Numerical Simulation of Slope Stability Analysis of Open Pit Coal Mine Based On MIDAS/GTS

Based on mining area end slope stability evaluation engineering of Pingshuo East open pit coal mine in Shanxi Province, according to the status quo of the North Slope of the first mining district of the East open pit coal mine as well as engineering geological investigation results, this article selected a representative cross-section of the North Slope,adopted processing functions of finite element analysis software MIDAS/GTS, and respectively analyze slope stability under three conditions of the mining area of the initial excavation,backfilling and disposal, and follow-up excavation.The paper concluded that Initial excavation caused slope instability; backfill slope is stable after disposal; follow-up excavation has essentially no effect on slope stability. The establishment and analysis are much closer to the real situation, objectively reflect the distribution of slope stability of the East open pit coal mine, and provide a design for open pit production safety.