摘要
某边坡是典型的倾倒变形体,其变形破坏的本质是近直立的块状板裂化花岗岩,在重力弯矩的作用下产生结构性弯曲,从而显现出倾倒-折断的变形特征。针对边坡的倾倒变形问题,在掌握其基本地质条件的基础上,建立边坡的离散元数值计算模型,通过岩体倾倒变形的基本特征的研究分析,得出了该边坡的变形破坏机理发展过程为:初期倾倒变形发展阶段;倾倒-弯曲变形发展阶段;弯曲-折断破裂发展阶段。
A slope is a typical toppling deformation body, and its essence of instability is that the massive slabbing granite that is nearly upright is structurally bent under the action of gravity bending moment, thus shows a deformation character of toppling-breaking. In relation to the toppling deformation of the slope, on the basis of mastering the basic geological conditions, the discrete element numerical computation model was established for the slope. Through the research and analysis of the basic characteristics of the rock toppling deformation, it was concluded that the development process of the slope deformation and failure was divided into three stages ： first, initial toppling deformation ; second, toppling-bending deformation ; third, bending- breaking failure.
出处
《路基工程》
2014年第2期153-158,共6页
Subgrade Engineering
关键词
边坡
倾倒变形体
离散元
变形破坏机理
slope
toppling deformation body
discrete element
deformation and failure mechanism
