关键词: 极限平衡法, 稳定性, 分析, 预测

Abstract: There is a sign of a large-scope integral landslide of the north wall slope in Gongchangling Open-Pit Mine.To avoid any disastrous accident, the stability of the current slope was analyzed and forecasted by the classical limit equilibrium method.The results show that, influenced by F100 fault, the final limit slope of Section 1~Section 3 is in instability or has insufficient safety reserve, especially at Section 1 and Section 2.Above Section 4, the distance fromF100 fault to the final limit slope exceeds 150m, indicating a sufficient safety reserve of the slope.In the middle east of the north wall, influenced by F100 fault, the final limit slope of Section 5~Section 8 is in instability or has insufficient safety reserve.There is little possibility for an integral landslide of the slope along F113 and F115 faults, but it is greatly possible that a local bench failure will occur at the fault outcrop on the slope surface.

Key words: Limit equilibrium method, Stability, Analysis, Forecast