大柳塔露天开采区厚黄土层边坡稳定性研究  

Research on thick loesslayerslopestability in Daliuta open-pit mining area

作　　者：孙钰 赵红泽[2,3] 朱文博 秦斌德 SUN Yu;ZHAO Hongze;ZHU Wenbo;QIN Binde(National Energy Shendong Coal Daliuta Three Pan District Management Office,Yulin 719315,China;School of Energy and Mining Engineering,China University of Mining&Technology(Beijing),Beijing 100083,China;State Key Laboratory for Geomechanics and Deep UndergroundEngineering,ChinaUniversity of Mining and Technology(Beijing),Beijing 100083,China)

机构地区：[1]国能神东煤炭大柳塔三盘区管理处,陕西榆林719315 [2]中国矿业大学(北京)能源与矿业学院,北京100083 [3]中国矿业大学(北京)深部岩石力学与地下工程国家重点实验室,北京100083

出　　处：《露天采矿技术》2023年第2期91-94,共4页Opencast Mining Technology

基　　金：国家重点研发计划资助项目(2022YFB4703701);中央高校基本科研业务专项资金资助项目(2022YJSNY17);中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室开放基金资助项目(SKLGDUEK1923)。

摘　　要：为了预测和控制滑坡对露天矿山生产安全的影响和制约,以大柳塔煤矿三盘区露天开采区为研究对象,通过岩土力学试验获取相关的岩土体物理力学参数,应用数值模拟软件FLAC3D对大柳塔煤矿三盘区厚黄土层采场边坡进行模拟分析,判断其失效形式;通过Geo-studio软件运用极限平衡方法计算得到各边坡的稳定性系数,进行稳定性评价。发现7-7边坡安全系数低于规范要求;对其进行工程削坡和抗滑挡墙支护控制性工程,当边坡角削至50°时,边坡安全系数从1.154增至1.312;当使用抗滑挡墙支护后,边坡安全系数从1.154增至1.612,表明所采用措施均具有积极作用。In order to predict and control the influence and restriction of landslide on the production safety of the open-pit mine,taking the three-panel area of Daliuta Coal Mine as the research object,the relevant physical and mechanical parameters of rock and soil mass were obtained through rock and soil mechanics tests,and the numerical simulation software FLAC3D was applied to simulate and analyze the slope of thick yellow soil layer in three-panel area of Daliuta Coal Mine to judge its failure form.Through Geo-studio software,the limit equilibrium method was used to calculate the stability coefficient of each slope,and the stability evaluation was carried out.It was found that the safety coefficient of slope 7-7 was lower than the standard requirements.The engineering slope cutting and anti-sliding retaining wall support were carried out control engineering.When the anti-sliding retaining wall is used,the slope safety factor increases from 1.154 to 1.612,indicating that all the measures adopted have positive effects.

关 键 词：极限平衡法 稳定性评价 安全系数 工程削坡 抗滑挡墙支护 

分 类 号：TD824.7[矿业工程—煤矿开采]