摘要
边坡岩体系统演化是一个复杂的非线性过程,目前对该问题的研究多为理论上的探讨,文章从数值模拟的角度出发,以水厂铁矿境界边坡为例,用非线性动力学分析软件UDEC3 0对边坡岩体系统的演化过程进行了模拟研究。研究表明,边坡岩体系统演化过程中会出现焦点、结点及鞍点三种奇点类型,这与K.T.Chau的岩体系统分岔模型较好地吻合了,对边坡变形破坏过程中边坡局部出现由稳定到不稳定再到稳定的现象也是一种较好的解释。因此,分岔是边坡岩体系统演化的本质特性。
The evolution of rockmass system of slopes is a complex nonlinear process.Most of current researches on the problem are theoretical.From the point of numerical simulation,a study on slope evolution was made with the nonlinear dyanmic software—UDEC 30 taking Shuichang iron mine as an example.The result showed that there are three kinds of equilibrium point:spiral point,improper point and saddle point in the process of evolution of slope system.These fit well with KTChau′s bifurcation model of rockmass,also,it is a good interpretation on the phenomena of local slope situation,ie.changing from stability to instability or from instabiliyt to stability in the process of evolution of slope system.Thus,bifurcation is the essential property of slope evolution.
出处
《中国地质灾害与防治学报》
CSCD
2003年第2期98-102,共5页
The Chinese Journal of Geological Hazard and Control
基金
国家"十.五"攻关项目(2001BA609A-08)
