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以甘肃省永靖县黑方台黄土滑坡为依托,对黄土滑坡的分布特征和形成因素进行了分析,得出降雨入渗和灌溉是滑坡最主要的滑动原因.对地震作用下滑坡的稳定性采用了强度折减法和简化毕肖普法进行了分析计算.计算结果表明:该滑坡在采取工程加固措施整治前,在地震作用下处于不稳定状态,需进行整治,结合工程地质条件,提出采用排水和抗滑桩的整治方案,并计算得出在地震作用下整治后的滑坡安全稳定系数大于设计值.研究结论可为地震作用下黄土滑坡的稳定性分析提供参考和理论依据.
Based on the Heibangtai loess landslide in Yongjing County, Gansu Province, the distribution characteristics and forming factors of loess landslides are analyzed, and the results show that rainfall infiltration and irrigation are the main causes of landslides.The stability of landslides under earthquake The strength reduction method and the simplified Bishop method were used to analyze and calculate.The results show that the landslide is in an unstable state under the action of earthquake before remediation with engineering reinforcement measures and it is necessary to carry out remediation. Combined with engineering geological conditions, Anti-slide piles, and calculated that the landslide safety and stability coefficient under the earthquake action is larger than the designed value.The research conclusion can provide reference and theoretical basis for the stability analysis of loess landslide under earthquake action.