摘要
采用边坡稳定性方法中的极限平衡法,探求矿区边坡是否处于安全状态,分别计算边坡在非渗流状态和渗流状态下的边坡稳定性安全系数;分析因降雨、河流入渗导致边坡浸润线高程改变对边坡稳定性的影响,建立数值模拟浸润线在丰水期初始状态下,浸润线高程降低与边坡稳定性安全系数的响应关系。结果表明:边坡处于不稳定状态,破坏模式为圆弧破坏,最不稳定的区域在+20 m水平台阶下的粗砂层和圆砾混土层位置处,需对边坡渗水问题和边坡可能出现的滑坡情况做出防治预案。
The article adopts limit equilibrium method of slope stability method to explore whether the mining slope in a safe state,and respectively calculates the slope stability safety coefficient of non seepage condition and seepage state.The article analyzes the effect on saturation line height change on slope stability caused by rainfall,river infiltration,establishes the response relationship of saturation line elevation lower and the slope stability safety coefficient under the initial states.The results show that the slope is in unstable condition,failure mode is circular arc,the most unstable area is under+20 m level steps of coarse sand and gravel mixed soil layer location,so we make controlled plans on the water seepage of slope and possible slope landslides.
作者
王永增
王润
曹洋
李风
徐子洺
陈肖肖
张璐
WANG Yongzeng;WANG Run;CAO Yang;LI Feng;XU Ziming;CHEN Xiaoxiao;ZHANG Lu(Qidashan Branch,Ansteel Group Mining Corportion LimiTed,Anshan 114000,China;Ansteel Group Mining Corportion LimiTed,Anshan 114000,China;School of Civil Engineering,Liaoning University ofEngineering and Technology,Fuxin 123000,China)
出处
《露天采矿技术》
CAS
2023年第2期57-60,共4页
Opencast Mining Technology
关键词
渗流
极限平衡法分析
数值模拟
浸润线
边坡稳定
seepage
limit equilibrium analysis
numerical simulation
saturation line
slope stability
