深层顺层滑坡抗剪强度参数反算分析  

Inversion analysis of shear strength parameters of deep consequent layered landslide

作　　者：李元勋[1,2] 朱彦鹏[1,2] 李京榜 朱胜祥[1,2] 何忠茂[1,3] 

机构地区：[1]兰州理工大学土木工程学院,甘肃兰州730050 [2]兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州730050 [3]甘肃土木工程科学研究院,甘肃兰州730030

出　　处：《兰州理工大学学报》2016年第5期117-121,共5页Journal of Lanzhou University of Technology

基　　金：国家支撑计划项目(2011BAK12B07)

摘　　要：深层顺层滑坡的特点有:滑面位于临空面之下,为深层滑动;滑坡坡底存在隆起剪出口,滑面不是单一直线型;滑面土性质单一,厚度大;抗滑段存在较明显等.针对以上特点,应用极限平衡原理,借鉴传递系数法,建立深层顺层滑坡反算力学计算模型,推导深层顺层滑坡抗剪强度参数反算公式.以兰州(新城)至永靖一级高速公路深层顺层滑坡为例,分析滑坡发生原因,用文中所提出方法进行计算分析,所得计算结果能较好地符合实际,对类似滑坡抗剪强度参数的确定具有一定参考作用.Aimed at the feature of deep consequent layered landslide that the sliding surface is located un- der the exposed surface belonging in deep layer sliding; there is a swelling shear opening at the bottom of the landslide so that the sliding surface is not a single linear one; the soil of the sliding surface has single Lanzhou to Yongjing county as example, the formation cause of the landslide was analyzed and calculated with the method proposed in this paper. The calculation result obtained can better meet the actual condi- tion, providing a certain reference for determining the shear strength parameter of similar landslide.

关 键 词：深层顺层滑坡 抗剪强度参数 反算法 极限平衡 传递系数法 

分 类 号：TU457[建筑科学—岩土工程]