对层状岩质状边坡不同层数溃屈失稳破坏的研究

The Study on Buckling Failure of Different Layer of Layer Rock Mass Slope

溃屈破坏是顺层边坡的失稳主要形式之一。根据顺层边坡的地质背景及力学作用机制,将岩板视为二维受压板,分单层和多层岩体溃屈失稳情况分别进行考虑。考虑地下水和地震作用的影响,建立了相应的力学模型。运用能量法原理进行分析,推导出了临界坡长和溃屈失稳的判断公式。应用该理论对具体工程实例进行分析,分析结果与实际情况较为相符,证明了该理论的正确性。

The buckling failure is the main forms of instability of the layered slope, According to the geologic background and the mechanical mechanism, rock plate as two-dimensional compression plate is extracted, consid- ered the instability conditions of sub-monolayer and muhilayer rock separately, considering the influence of ground-water and earthquake action, established the corresponding mechanical model. Using the principle of energy meth-od, the critical slope length and the judgment formula of bending instabihty are deduced. Analysis the specific ex-amples of projects, analysis results are consistent with actual situation, and proved the correctness of the theory.