确定碎裂岩体综合内摩擦角的一种新方法  

A New Method of Determining Synthetically Internal Friction Angle on Cataclastic Rock Mass

作　　者：杨国俊[1] 王亮清[1] 梁烨[1] 

机构地区：[1]中国地质大学工程学院,湖北武汉430074

出　　处：《人民黄河》2012年第4期140-142,共3页Yellow River

基　　金：国家重点基础研究发展规划项目(2011CB710600);国家自然科学青年基金资助项目(40702050);中央高校基本科研业务费专项资金资助项目(CUG090104)

摘　　要：碎裂岩体具有风化破碎、裂隙充分发育的特征,可以通过测量边坡休止角的方法确定碎裂岩体的综合内摩擦角。根据碎裂岩体的平面分布与坡面形态,将碎裂岩体边坡的坡面形态概化为4种模型,并采用数理统计的方法确定综合内摩擦角。采用新方法对某工程坝址区碎裂岩体的综合内摩擦角进行了计算,结果表明:新方法充分考虑了各种因素作用下坡面形态的不规则性,该方法确定的综合内摩擦角符合实际情况。Cataclastic rock mass has the characteristics of weathering,brokening and fully developed fractures.The synthetically internal friction angle of cataclastic rock mass can be determined by measurement slope natural angle of repose.Based on the plane distribution and slope shape of cataclastic rock mass,this paper classified cataclastic rock mass into four main types,and determining the synthetically internal friction angle by mathematical statistics.The synthetically internal friction angle of a dam site area of cataclastic rock mass is calculated by a new method.The results show that the new method takes into full consideration the various factors of slope shape in irregular;the method determines the synthetically internal friction angle and is consistent with the actual situation.

关 键 词：碎裂岩体 综合内摩擦角 天然休止角 数理统计 

分 类 号：TU452[建筑科学—岩土工程]