平面滑动型边坡极限倾角的研究  

Study and analysis of critical inclination slope with planar failure surface

作　　者：缪世贤[1,2] 陈征宙[1] 张明瑞[1] 毕港[1] 

机构地区：[1]南京大学地球科学与工程学院,江苏南京210093 [2]江苏省地质调查研究院,江苏南京210049

出　　处：《岩土工程学报》2011年第1期94-97,共4页Chinese Journal of Geotechnical Engineering

摘　　要：对于平面滑动型的岩质边坡,结构面对边坡的稳定性起着控制作用。在边坡设计分析过程中,如果边坡内没有确定的滑面,或者对坡体内结构面情况不明的情况下,通过对最不利滑面的极限倾角进行估算,可以作为边坡稳定性分析的依据。对传统的估算公式进行了改进,综合考虑到重力和地震的影响,分别通过极限坡高和极限安全系数给出边坡最危险滑面的极限倾角的计算公式。经过对比与分析,得出两种方法各自的适用条件。For the rock slope with planar failure surface,the structural plane plays a controlling role in the stability of slope.In the process of design and analysis,if the planar failure appears without fixed plane in rock slope,the critical inclination of failure face can be used as the basis for analyzing the slope stability.The traditional estimation formula is optimized.Considering the effects of gravity and earthquakes,two formulae for calculating the critical inclination of failure face are given respectively.One is based on the limit height of slope,and the other is based on the limit factor of safety.Through comparison and analysis,their advantages and disadvantages are obtained.

关 键 词：岩质边坡 极限坡高 极限倾角 极限安全系数 

分 类 号：TU43[建筑科学—岩土工程]