Measurement of Joint Roughness Coefficient by Using Profilograph and Roughness Ruler

查看全文 作　　者：[1]杜时贵;[2]胡云进;[3]胡晓飞

机构地区：[1]Zhejiang Industry Polytechnic College;[2]College of Civil Engineering and Architecture,Zhejiang University;[3]Jinhua University

出　　处：《Journal of Earth Science》索引2009年第20卷第5期,共7页

基　　金：supported by the National Natural Science Foundation of China (Nos. 40672186, 50809059);the Natural Science Foundation of Zhejiang Province (No.Y505008) 摘　　要：Joint roughness coefficient(JRC) is the key parameter for the empirical estimation of joint shear strength by using the JRC-JCS(joint wall compressive strength) model.Because JRC has such characteristics as nonuniformity,anisotropy,and unhomogeneity,directional statistical measurement of JRC is the precondition for ensuring the reliability of the empirical estimation method.However,the directional statistical measurement of JRC is time-consuming.In order to present an ideal measurement method of JRC,new profilographs and roughness rulers were developed according to the properties of rock joint undulating shape based on the review of measurement methods of JRC.Operation methods of the profilographs and roughness rulers were also introduced.A case study shows that the instruments and operation methods produce an effective means for the statistical measurement of JRC. 关键词：粗糙度系数定向测量系数法糙率经验估计测量方法关键参数抗剪强度

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Measurement of Joint Roughness Coefficient by Using Profilograph and Roughness Ruler

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