非贯通节理岩体抗剪强度影响因素分析  

Analysis of Influence Factors on Shear Strength of Non-Penetration Jointed Rock Mass

作　　者：刘超[1] 刘远明[1] LIU Chao;LIU Yuanming(School of Civil Engineering,Guizhou University,Guiyang 550025,China)

机构地区：[1]贵州大学土木工程学院,贵州贵阳550025

出　　处：《华侨大学学报（自然科学版）》2018年第4期551-555,共5页Journal of Huaqiao University(Natural Science)

基　　金：国家自然科学基金资助项目(11562005);贵州大学研究生创新基金资助项目(2016012)

摘　　要：基于修正的Lajtai岩桥破坏理论,研究连通率、形貌节理起伏角、法向压力等因素对非贯通节理岩体抗剪强度的影响,利用人工混凝土模拟类岩石材料,并进行直剪实验论证.结果表明:非贯通节理岩体抗剪强度与起伏角大小成正相关关系,与连通率成负相关关系;其他影响因素相同时,法向压力越大,非贯通节理岩体抗剪强度越大.Based on the modified Lajtai rock bridge failure theory,the influence of connection rate,topographic joint undulation angle,normal pressure et al.on shear strength of non-penetration jointed rock mass is studied.Using artificial concrete to simulate the rock,the direct shear experiment is conducted.The result shows that：the shear strength of non-penetration jointed rock mass is positively correlated with the undulation angle,but is negatively correlated with the connection rate;under the same other factors,the normal pressure is positively correlated with the shear strength of non-penetration jointed rock mass.

关 键 词：岩体 非贯通节理 直剪试验 抗剪强度 

分 类 号：TU45[建筑科学—岩土工程]