文献类型：期刊文献

英文题名：Study on the size effect of the secant modulus of rocks containing multiple parallel joints

作者：Zhang, Jing[1];Guo, Wannian[1];Fu, Yongzhi[2];Feng, Yong[2];Wang, Qingxia[1];Hu, Gaojian[3,4];Wang, Tao[1]

机构：[1]Taiyuan Univ Technol, Coll Safety & Emergency Management Engn, Taiyuan, Shanxi, Peoples R China;[2]China Energy Investment, Yanbao Energy, Hulun Buir, Peoples R China;[3]Shaoxing Univ, Sch Civil Engn, Shaoxing, Zhejiang, Peoples R China;[4]Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing, Zhejiang, Peoples R China

年份：2022

卷号：9

外文期刊名：FRONTIERS IN MATERIALS

收录：SCI-EXPANDED(收录号：WOS:000880769200001)、、EI(收录号：20224513075672)、Scopus(收录号：2-s2.0-85141430406)、WOS

基金：This work was supported by the Project: Inner Mongolia Dayan Mining Group Co., Ltd. entrusted "Research and Application of Two-way Profitable Balance Support Technology under High Stress Soft Rock Conditions in No. 3 Coal Mine (Research and Development of New Resin Anchoring Agent)" (GJNY-21-108), the Zhejiang Collaborative Innovation Center for Prevention and Control of Mountain Geological Hazards (PCMGH-2017-Y-05), and the Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (ZGRMG-2019-07).

语种：英文

外文关键词：size effect; characteristic size; parallel joint; secant modulus; characteristic secant modulus

外文摘要：The secant modulus of the rock reflects the stiffness of the rock and the ability to resist deformation. There are significant differences in the secant modulus of the rock due to the different numbers of joints in the rock and the change in rock size. Therefore, it is important to obtain effectively the secant modulus of rocks with the number of parallel joints for evaluating rock deformation. In this study, the method of regression analysis is used, and 10 sets of numerical plans are set up to discuss the influence of a number of parallel joints and rock size on the secant modulus. The results show that the secant modulus decreases with the increase in a number of parallel joints, and the curve is a power function. The secant modulus decreases when the rock size increases, and the curve is an exponential function. The characteristic secant modulus and characteristic size decrease with the increase in the number of parallel joints, and their curves are an exponential function. The specific forms of these relationships are given in the article. The establishment of these relationships realizes the prediction and calculation of the rock secant modulus with the number of parallel joints, which provides a guiding significance for the rock deformation analysis.