摘要
研究了香港全风化花岗岩三轴抗剪强度指标凝聚力c、内摩擦角?同微结构及成分的关系,指出微结构的特点决定了强度特点,?值主要由其石英与长石总含量和颗粒中大于0.5mm的含量所控制,而c值的影响因素复杂性决定了其试验结果的离散性。通过研究c,?值与应变之间的关系,说明摩擦力在强度中占的比重大,并能够进一步解释c值结果的离散性大的原因。
The relations among the shear strength, microstructure and composition of completely decomposed granite are discussed. The friction angle is mainly controlled by the content of particles greater than 0.5 mm and total content of quartz and feldspar. The discreteness of cohesion is attributed to the complexity of control factors. The relationship between the shear strength and the strain shows that friction has a predominant proportion in the shear strength. And furthermore, it can explain the discreteness of cohesion as well.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2005年第4期624-628,共5页
Rock and Soil Mechanics
基金
香港大学边坡信息资讯中心资助项目(No.香港全风化花岗岩的微结构综合研究NO1)
关键词
全风化花岗岩
抗剪强度
凝聚力
内摩擦角
Composition
Decomposition
Feldspar
Friction
Microstructure
Quartz
Regression analysis
Shear strength
Strain
Stresses
