摘要
近年来排土场边坡失稳事故频发,造成重大人员财产损失。排土场边坡稳定性分析引起了相关方面的高度重视。本文搜集了吕梁矿区下庄排土场所在区域地形地质资料,通过勘探获得了排土场几何形态、排弃物岩性特征及基底工程地质特征,测定了相关参数,根据强度折减的有限元法进行边坡稳定性计算。结果表明:正常情况下边坡安全系数为1.512 5,降水条件下安全系数为1.16,安全度属正常级,认为排土场整体稳定,但局部台阶存在小规模坍塌风险。
Waste dump slope destabilizing accidents had happened frequently in recent years, and caused fatal personnel and property losses. Thus the waste dump slope stability study has caused relevant parties paid great attention to. The paper made use of regional topographic and geologic data from waste dump site in the Luliang mining area, then through exploration obtained waste dump geometry,waste lithologic characters and foundation engineering geological features, have determined relevant parameters. Based on the strength reduction finite element method has carried out slope stability computation. The result has shown that the slope safety factor under normal condition is 1.5125, while 1.16 under precipitation condition; degree of safety belongs to normal level. As a whole, the dump site is stable, but local slope benches have existed small scale collapse hazards.
出处
《中国煤炭地质》
2016年第4期63-66,共4页
Coal Geology of China
关键词
排土场
边坡稳定性
强度折减
有限元法
吕梁矿区
waste dump
slope stability
strength reduction
finite element method
Luliang mining area
