G_(SI)和D对边坡稳定性影响的研究  

Influences of G_(SI) and D on Slope Stability

作　　者：许肖锋[1,2,3] 李鹏飞[1,2] 张兴元[1,2] 尉伯虎[3] 

机构地区：[1]兰州大学西部灾害与环境力学教育部重点实验室,甘肃兰州730000 [2]兰州大学土木工程与力学学院,甘肃兰州730000 [3]西北核技术研究所,陕西西安710024

出　　处：《水电能源科学》2011年第6期120-123,共4页Water Resources and Power

摘　　要：根据岩体地质条件,采用Hoek-Brown准则估计岩体摩擦角和粘聚力,基于FLAC3D分析了地质强度指标GSI及岩体扰动系数D对岩质边坡的塑性区和位移的影响,并运用极限平衡法验证了GSI、D对边坡稳定系数的影响。灰关联分析结果发现,D的变化引起边坡局部失稳,GSI可控制边坡整体失稳。According to the geological conditions of rock mass, Hoek-Brown criterion is adopted to predict friction angle and cohesive strength. And the influence of the geological strength index GSI and the rock mass disturbance factor D on displacement and plastic zone of rock slope is analyzed by using software FLAC3D. Then the limit equilibrium method is used to verify the influence of Gsl and D on slope stability factor. The grey relational analysis results show that the change of D can cause localized instability of slope and GSI can also control the whole slope instability.

关 键 词：霍克-布朗准则 地质强度指标 岩体强度 边坡 摩尔一库仑准则 

分 类 号：TU452[建筑科学—岩土工程]