降雨作用对露天矿山边坡稳定性影响研究
Study on the Influence of Rainfall on Slope Stability of Open-pit Mines
王强1
作者信息
摘要
降雨作用会导致边坡稳定性变差,影响着采场的安全生产.以某露天边坡为研究背景,基于极限平衡法和强度折减法,利用GeoStudio和FLAC3D软件,对降雨作用下整体边坡稳定性进行分析.极限平衡法计算结果表明,在降雨作用下最终边坡稳定性系数最小值为1.78,大于矿山许用安全系数1.20;强度折减法计算结果表明,边坡剖面的安全性系数都能满足规范要求的最小安全系数,降水作用对该露天边坡稳定性影响较少.边坡稳定性较好,采场边坡参数选取可行,为类似矿山的边坡防护与治理提供依据.
Abstract
The effect of rainfall will lead to the deterioration of slope stability,which will affect the safety of stope production.Based on the limit equilibrium method and strength reduction method,GeoStudio and FLAC3D software are used to analyze the slope stability of the whole slope under rainfall.The results of limit equilibrium method show that the minimum value of slope stability coefficient under the action of rain-fall is 1.78,which is greater than the allowable safety factor of 1.20.The results of strength reduction method show that the safety coefficient of the slope profile can meet the minimum safety coefficient required by the code.The effect of precipitation on the stability of the open-pit slope is less,the slope stability is good,and the selection of stope slope parameters is feasible,which provides a basis for slope protection and treatment of similar mines.
关键词
边坡稳定性/极限平衡法/数值模拟/降雨作用Key words
slope stability/limit equilibrium method/numericalsimulation/rainfall引用本文复制引用
出版年
2024
NETL
NSTL
万方数据