摘要
目前,岩体边坡稳定性的分析多数采用极限平衡法将边坡一律按照刚体进行分析,没有考虑软弱夹层的影响,但对于岩体内部存在多个软弱带(层)的边坡看做是一个刚性体是不切合实际的,那如何考虑它们之间的相互作用,目前还是一个空白,没有这方面的研究。鉴于此,在塑性极限分析理论的基础上,将内部存在多个软弱带(层)的边坡视为刚塑性体,提出利用机动位移法、采用能量系数对存在单个或多个平面型软弱夹层的岩体边坡进行稳定性评价方法,并推导了相应计算公式,同时,利用典型实例进行了验证,并与传统的极限平衡法结果进行了对比,证明了该方法的可行性和实用性,具有很高的实用价值。
At present, most of the the rock slope stability analysis using limit equilibrium, Slope will be in accordance with the rigid body analysis, did not consider the impact of weak sandwich. It is not realistic to take the slope as rigid body since there are a number of internal soft rock band （floor） . It is still a gap considering how the interaction between them, there is no research in this area. In this paper, based on the plastic limit analysis, take the existence of a number of the slope of internal weakness strip （layer） as rigid-plastic body, bring forward mobile displacement method, use energy factor to carry through the stability evaluate method on slope which had single or multiple-plane dissection of the soft rock evaluation, and the corresponding formula is derived. At the same time, verified by a typical example of the use, and compare the results with the traditional limits, proved the feasibility and practicality of this method, with a very High practical value.
出处
《山地学报》
CSCD
北大核心
2009年第2期223-229,共7页
Mountain Research
关键词
顺层边坡
稳定性
机动位移法
能量系数
计算
parallel slope
stability
Mobile Displacement method
energy factor
Calculation
