陡-缓倾组合节理岩质边坡稳定性分析  

Stability Analysis of Rock Slopes with Steep-Gently Inclined Combined Joint

作　　者：马磊 MA Lei(Shanxi Provincial Expressway Group Taiyuan Co.,Ltd.,Taiyuan,Shanxi 030006,China)

机构地区：[1]山西省高速公路集团太原有限责任公司,山西太原030006

出　　处：《山西交通科技》2024年第6期53-56,共4页Shanxi Science & Technology of Transportation

摘　　要：岩质边坡内部节理的发育和分布对边坡稳定性具有很大的影响,探究边坡安全系数随节理的发育情况和分布状态的变化具有重要的实际工程意义。通过在边坡数值模型中嵌入离散裂隙网络,构建含陡-缓倾组合节理的岩质边坡模型,并对边坡稳定性和失稳模式进行分析。结果显示,岩质边坡的安全系数随着节理倾角和节理连通率的增大和节理间距的减小而减小;边坡的失稳模式随节理几何参数的改变发生变化;与陡-缓倾组合节理岩质边坡相比,仅含缓倾节理的岩质边坡稳定性更好。The development and distribution of the joints inside the rock slopes have great impacts on the slope stability,so,it is of important practical engineering significance to investigate the variations of slope safety factors with the development and distribution of joints.This paper constructed a rock slope model with the steep-gently inclined combined joint by embedding the discrete fracture network in the slope's numerical model to analyze the slope stability and the instability mode.The results showed that the safety factors of the rock slope decreased with the increase of the joint inclination or the joint connectivity,and the decrease of the joint spacing.The slope instability mode changed with the change of the joint geometry parameters.Compared with the rock slope with the steep-gently inclined combined joint,the rock slope with the gently inclined joint had better stability.

关 键 词：岩质边坡 离散裂隙网络 陡-缓倾组合节理 边坡稳定性 失稳模式 

分 类 号：U416.14[交通运输工程—道路与铁道工程]