结合大冶铁矿东露天采场F9断裂带内的边坡实际情况,借助大型有限元软件ANSYS,采用重度增加法对大冶典型地段的边坡进行了稳定性分析及评价,最后应用有限元强度折减法进行验证,并对两种方法进行分析和比较.结果表明,基于重度增加技术的ANSYS程序用于高陡岩质边坡稳定性分析是可行的,与实际情况较为吻合,能合理简便地确定边坡的稳定性系数,是进行高陡边坡稳定性评价的有效方法之一,对工程实践具有一定的指导意义.
This paper takes an example of the actual situation in F9 in eastern open pit of Daye iron mine, and applies gravity increase method in the stability analysis and evaluation about slopes of the typical lot by adopting large finite element software ANSYS. Finally this paper adopts strength reduction method to demonstrate the previous approach, and two methods are compared. The results show that ANSYS programs based on gravity increase method are feasible for stability analysis of the high and steep slopes, which match the actual situation well, and can reasonably determine stability coefficient of slopes easily. This method is one of the effective methods for evaluation of slope stability, and it is significant to guide project practice to some extent.