岩体结构面强度特性及地下水影响  

Research on strength characteristic of discontinuity and effects of underground water on shear strength behavior in rock mass

作　　者：肖桃李[1,2] 艾明[1] 路亚妮[2] 

机构地区：[1]长江大学城市建设学院,湖北荆州434023 [2]武汉理工大学道路桥梁与结构工程重点实验室,湖北武汉430070

出　　处：《河北大学学报（自然科学版）》2013年第6期572-577,共6页Journal of Hebei University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(41102182)

摘　　要：结构面强度是岩体重要的力学特征之一,它控制着岩体的强度及变形;通过对结构面强度理论的分析和总结,从理论上验证了压应力状态下节理岩体的2种破坏形式,即结构面的剪切破坏和岩石的剪切破坏;考虑地下水的影响,引入有效应力原理,建立了饱和岩体结构面剪切破坏的强度准则.该准则对于深部岩体强度的研究具有重要的理论意义.The strength characteristic of discontinuity is one of the teristics of rock mass, and its strength dominates the strength and defo most important mechanical characrmation of joint rock mass. The un- derground water has an important influence on the strength of discontinuity. In this paper, the strength theory of joint rock mass was summarized and analyzed; further, two kinds of failure mode of joint rock mass which were joint shear failure and rock shear failure were proof. Considering the impact of underground water, the effective stress principle was introduced, and base on it, the joint shear failure strength rule of the saturated rock mass was built. When the influence of underground water on joint strength was studied, the shear strength formula had important theoretical and realistic significance.

关 键 词：岩体结构面 抗剪强度 地下水 强度准则 有效应力原理 

分 类 号：TU45[建筑科学—岩土工程]