IOP Conference Series: Earth and Environmental Science | 2021
Study on Open-pit Mine Slope Stability Based on Improved TOPSIS Method
Abstract
In order to evaluate the slope instability risk of open-pit mine more accurately, this paper establishes a slope instability risk evaluation model based on Improved TOPSIS method according to the hierarchical holographic modeling method and entropy method. In this paper, the hierarchical holographic modeling method is used to establish the evaluation index system of open-pit slope stability, and 11 main indexes which have great influence on the stability are selected. The weights of 11 main indexes are calculated by using entropy method, and then applied to TOPSIS method. Finally, the positive and ideal solution distances of 5 typical open-pit slopes are calculated and the destabilization risk of 5 open-pit slopes is reasonably evaluated. The evaluation results were compared with those of other evaluation models to verify their rationality. The results show that the slope evaluation method based on improved TOPSIS can effectively evaluate the slope stability, which provides a new method for determining the high risk slope and effectively rating the slope risk.