文献类型：期刊文献

英文题名：Correlation between the Joint Roughness Coefficient and Rock Joint Statistical Parameters at Different Sampling Intervals

作者：Huang, Man[1,2];Xia, Cia-chu[1,2];Sha, Peng[2];Ma, Cheng-rong[2];Du, Shi-gui[2]

机构：[1]Tongji Univ, Dept Geotech Engn, Shanghai 200092, Peoples R China;[2]Shaoxing Univ, Coll Civil Engn, 508 Huancheng West Rd, Shaoxing 312000, Peoples R China

年份：2019

卷号：2019

外文期刊名：ADVANCES IN CIVIL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:000481900800001)、、Scopus(收录号：2-s2.0-85071259070)、WOS

基金：(is study was partially funded by the Zhejiang Provincial Natural Science Foundation of China (Grant no. LQ18D020003), National Natural Science Foundation of China (Grant nos. 41831290, 41472248, and 41572299), and Key Research and Development Projects of Zhejiang Province (Grant no. 2019C03104). (is support is gratefully acknowledged.

语种：英文

外文摘要：Joint roughness coefficient (JRC) is a major factor that affects the mechanical properties of rock joints. Statistical methods that are used to calculate the JRC increasingly depend on a sampling interval (Delta x). The variation rules of fitting parameters a, b, and b/a at different Delta x values were analyzed on the basis of the relationship between the JRC and statistical parameter Z(2). The relationship between the fitting parameters a and b was deduced in accordance with the ten standard profiles proposed by Barton. Empirical formulas for the JRC, Z(2), and Delta x were also established. The estimation accuracy of the JRC was the highest in the analysis of Delta x values within 0.1-5.0mm. JRC tests were conducted through inverse value comparative analysis. Results showed that the outcome calculated using the general formula and the JRC inverse values demonstrate improved agreement and verify the rationality of the general formula. The proposed formula can perform rapid and simple JRC calculation within the Delta x range of 0.1-5.0mm using Z(2), thereby indicating favorable application prospects.