文献类型：期刊文献

英文题名：A rapid field measurement method for the determination of Joint Roughness Coefficient of large rock joint surfaces

作者：Yong, Rui[1,2];Fu, Xi[1];Huang, Man[1];Liang, Qifeng[1];Du, Shi-Gui[1]

机构：[1]Shaoxing Univ, Dept Civil Engn, Shaoxing 312000, Peoples R China;[2]Queens Univ, Dept Civil Engn, Kingston, ON K7L 3N6, Canada

年份：2018

卷号：22

期号：1

起止页码：101

外文期刊名：KSCE JOURNAL OF CIVIL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000418391200012)、、EI(收录号：20172003671452)、Scopus(收录号：2-s2.0-85019176177)、WOS

基金：The study was funded by National Natural Science Foundation of China (Nos. 41502300, 41427802, 41172292, 41302257). The authors appreciate the help provided by Harkiran Kaur, who made the careful English language editing on this manuscript before submitting. We are grateful to Prof. Ron Hotchkiss for his help with checking the data description.

语种：英文

外文关键词：Joint Roughness Coefficient (JRC); roughness amplitude; grayscale image processing; rock joint

外文摘要：An accurate measurement of the Joint Roughness Coefficient (JRC) of large rock joints is essential for understanding the mechanical behavior and permeability characteristics of rock mass. Determining the surface roughness of rock joints in situ, however, is time-consuming and depends on sophisticated instruments. This study was carried out to develop a systematic method of measuring the JRC values of large joint roughness profiles. The roughness profiles were accurately recorded by a hand profilograph in the field and then digitized with flexibly adjusted sampling intervals by the grayscale image processing method. The digitized profiles were correlated closely with the original roughness profiles. A computerized approach for JRC quantitative evaluation was proposed based on the roughness amplitude/joint length relationship with JRC. The interval effect analysis showed that this method was effective for estimating the JRC values of different sized rock joints. This JRC measurement method has been successfully used in a case study of killas rock joints in Changshan City, P.R. China.