含锯齿状结构面的岩质边坡稳定性拟动力分析  

Pseudo-Dynamic Analysis of Rock Slope Stability with Serrated Plane

作　　者：潘浩 孙树林[1] 高诗钦 龚郴彬 PAN Hao;SUN Shulin;GAO Shiqin;GONG Chenbin(School of Earth Sciences and Engineering,Hohai University,Nanjing,Jiangsu 211100,China)

机构地区：[1]河海大学地球科学与工程学院,江苏南京211100

出　　处：《河北工程大学学报（自然科学版）》2022年第2期52-58,共7页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：国家自然科学基金资助项目(41674113);中央高校科研业务费专项资金资助项目(2109B42214)。

摘　　要：为了研究含有锯齿状结构面的岩质边坡稳定性,结合锯齿状结构面的剪切强度经验公式,综合考虑结构面参数、锚固效应、地震作用以及地下水位深度等因素的影响,基于改进的拟动力法推导了加锚结构面边坡抗滑稳定性安全系数计算式,并分析了岩石边坡稳定性的影响因素,结果表明:锯齿状结构面的抗剪强度与起伏角呈线性关系,随着起伏角的增大而增大;随着地震系数、滑动面倾角、水位深度、边坡倾角以及土体重度的增加,边坡稳定性降低,随着内摩擦角的增大而提高;锚固力越大,岩体的抗剪强度增大,边坡抗滑稳定性提高,但是锚固角的增大对边坡的稳定性起着负面效应。In order to study the stability of rock slope with serrated discontinuity,by combining with the empirical formula of shear strength of serrated discontinuity and considering the influences of structural plane parameters,anchoring effect,seismic action and groundwater depth,the safety factor calculation formula of anti-sliding stability of the slope with anchor structural plane was derived in this paper based on the improved pseudo-dynamic method,and the influential factors of rock slope stability were analyzed.The results show that the shear strength of the serrated structural plane has a linear relationship with the fluctuation Angle and increases with the increase of the fluctuation angle.With the increase of the seismic coefficient,slip plane dip angle,water level depth,slope dip angle and soil weight,the slope stability decreases and increases with the increase of the internal friction angle.The larger the anchoring force,the greater the shear strength of rock mass,and the anti-sliding stability of slope is improved.However,the increase of the anchoring angle has a negative effect on the stability of slope.

关 键 词：边坡稳定 锯齿状结构面 锚固效应 安全系数 

分 类 号：TU457[建筑科学—岩土工程]