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针对安家岭露天煤矿黄土高台阶边坡,综合应用现场工程地质调查、力学试验、稳定分析等方法对黄土高台阶边坡稳定性进行评价。根据现场工程地质调查及岩石特性,选取安家岭露天矿北帮9 800~10 050区段XP1剖面、XP2剖面,通过计算得出典型剖面黄土高台阶处整体稳定系数均不满足安全储备系数要求的结论。综合分析多种因素,确定采用削坡减重处理方法,治理后稳定系数分别为1.310和1.241,均满足安全储备系数1.2的要求。
Aiming at the high slope of loess in the Anjialing opencast coal mine, the slope stability of high loess slope is evaluated by comprehensively applying on-site engineering geological survey, mechanical test and stability analysis. According to the site engineering geological survey and the rock characteristics, the XP1 and XP2 sections of 9 800 ~ 10 050 section of northern Anjialu open pit are selected, and the results show that the overall stability coefficient of high-grade loess in typical section does not satisfy the requirements of safety reserve coefficient in conclusion. Comprehensive analysis of a variety of factors, to determine the use of cutting weight loss treatment methods, the stability coefficient after treatment were 1.310 and 1.241, respectively, to meet the safety reserve factor of 1.2 requirements.