开挖边坡松动区的一种定义及分析方法

从岩土材料的强度准则出发，给出了坡体稳定系数的一种表示方法．提出了在应力分析的基础上，利用坡体内从上而下所作的不同参考线段的稳定系数变化曲线来分析坡体开挖松动区．在分析松动区的同时，得到松动区坡体所对应的稳定系数．通过工程实例分析，说明该分析坡体开挖松动区的方法是合理的．

One Definition and Analysis Method of Relaxation Zone in Cutting Slope

One calculation method for safety factor of slope is set up in terms of intensity principle of geotechnical material in this paper.According to the conception of safety factor,an analysis method of relaxation zone is provided.The method is that the relaxation zone can be analyzed by the variation curve of safety factor along different reference lines which are drawn in some form in cutting slope on the basis of getting stress field which can be computed by numerical methods.Safety factor can be got when corresponding relaxation zone is obtained,which is beneficial for design and analysis of practical projects.It is shown that the conception and analysis method of relaxation zone is reasonable by a practical slope project.