【摘要】 倾倒是岩质边坡失稳的典型破坏形式之一,而常规的滑动极限平衡分析方法不适宜用于这类边坡的稳定分析。长期以来,Hoek和Bray著《岩石边坡工程》中介绍的Goodman和Bray提出的基于极限平衡原理的分析方法(以下简称G-B法),一直是研究这类问题的主要手段之一,但对其合理性仍有待验证。采用当前国际上发展的一种最新数值分析方法——非连续变形分析(DDA),结合一典型算例对该方法进行验证,对倾倒破坏的失稳变形机理进行分析研究,指出了采用G-B法可能出现的问题。更多还原

【Abstract】 Limit equilibrium analysis method is not suitable for the stability analysis of topple rock slope. Atpresent, the G-B method put forward by Goodman and Bray is widely applied for the analysis of this kind of rock slope. However its rationality needs to be evaluated. The discontinuous deformation analysis (DDA) method is adopted to analyze the deformation and failure mechanism of a typical example of topple rock slope. Contrastanalysis results show that G-B method will give unreasonable results.更多还原