中南大学学报（自然科学版）2013，Vol.44Issue(7)：2855-2860,6.
均质边坡稳定状况快速辨识及参数反演的一种实用方法
A practical method for fast identifying stability state and back calculating parameters in homogeneous slopes
摘要
Abstract
A new fast identification of slope stability state based on KEM (kinematical element method) was presented.The intemal relationship between combination of rock and soil parameters (slope height H,cohesion c,friction angle φ and unit weight γ) and stability state (factor of safety F and location of critical slip surface) was studied.The slope stability charts were developed,and a rapid and reliable way was provided to calculate the factor of safety and the location of critical slip surface without iteration.Based on the above slope stability charts,a new parameters inversion method was presented.The result shows that the location of critical slip surface and F/tanφ are determined by dimensionless parameter λ =c/(γHtanφ).If λ remains constant,the location of critical slip surface and F/tanφ remain the same.As λ increases,the failure mode changes from shallow slip to deep slip,and the horizontal distance from the toe of the slope to the failure surface at crest is much farther.When λ ＞ 0.2,the relationship between λ and F/tan φ is linear,and the factor of safety can be calculated fast by the fitting formulas.With the slope geometry and the horizontal distance from the toe of the slope to the failure surface at crest in a specific cross-section,strength parameters of landslide slip can be obtained through back-calculation.关键词
边坡稳定/运动单元法/临界滑动面/稳定分析图/参数反演Key words
slope stability/ KEM/ critical slip surface/ slope stability chart/ parameter inversion分类
建筑与水利引用本文复制引用
张科,曹平..均质边坡稳定状况快速辨识及参数反演的一种实用方法[J].中南大学学报（自然科学版）,2013,44(7):2855-2860,6.基金项目
国家自然科学基金资助项目(10972238,51174228) （10972238,51174228）
高等学校博士学科点专项科研基金资助项目(20120162110009) （20120162110009）
湖南省研究生科研创新项目(CX2012B069) （CX2012B069）
