反倾岩质边坡悬臂梁极限平衡模型的改进

Improvement of cantilever beam limit equilibrium model of counter-tilt rock slopes

反倾岩质边坡稳定性分析一直以来都是边坡稳定性分析中的难点,有很多悬而未决的问题。极限平衡分析方法仍然是目前最为常用的一种方法,也是相对比较成熟的一种方法。在Adhikary和Dyshin悬臂梁弯曲极限平衡分析模型的基础上,经过分析推导,对其折裂面形式、层间凝聚力的影响和各层岩体重度等方面问题进行了修正,得到了改进的悬臂梁极限平衡模型,提出了以各层位剩余不平衡力作为分析反倾边坡稳定性标准的新方法,并对边坡稳定性各影响因素进行了分析研究,得出的结论和规律更符合工程实际,对该类边坡的设计施工具有指导意义。

The stability analysis of counter-tilt rock slopes is a difficulty in rock slope analysis,and there are many questions need to be solved.Limit equilibrium method is the most common and relatively effective method at present.Based on the cantilever beam limit equilibrium model by D.P.Adhikary and A.V.Dyshin,the form of fracture plane and the influences of cohesion and severe of different layers are mainly modified,and an improved cantilever beam limit equilibrium model is given.Based on the new model,a new method to analyze the stability of counter-tilt rock slopes is proposed by using residual unbalance force as standard,and a comprehensive research on the influences factors of counter-tilt rock slopes is made.By doing these work,some conclusions and laws which are useful for design and construction of these type of slopes are drawn.