考虑岩体抗剪强度各向异性特征的边坡稳定分析方法  

Rock slope stability analysis using anisotropic shear strength parameters

作　　者：陈祖煜[1] 徐昱[1] 孙平[1] 

机构地区：[1]中国水利水电科学研究院岩土工程研究所,北京100048

出　　处：《兰州大学学报（自然科学版）》2015年第6期759-767,共9页Journal of Lanzhou University(Natural Sciences)

摘　　要：在Sarma法的基础上,利用岩体连通率指标对临界滑裂面搜索过程中岩体的抗剪强度参数进行修正,得到了考虑岩体各向异性的搜索结果.通过算例证明,所获得的临界滑裂面和优势结构面的倾角一致,通过漫湾、三峡等实际工程案例进行了合理性验证.Traditional rock slope stability analysis adopts isotropic shear strength parameters that are not representative of the actual behavior of rock masses. Suggested here was the use of anisotropic shear strength parameters based on the persistent ratio determined by the Monte-Carlo simulation and dynamic programming technique. These parameters were used in the Sarma＇s slope stability analysis that employed inclined inter-slice faces. The test example demonstrated that the critical slip surface so obtained could accurately coincide with the dip inclination of the dominating joint set. Practical applications on the projects of Manwan and Three Gorges have been illustrated too.

关 键 词：边坡稳定分析 连通率 岩体抗剪强度 

分 类 号：TU457[建筑科学—岩土工程]