文献类型：期刊文献

英文题名：Physical model test and application of 3D printing rock-like specimens to laminated rock tunnels

作者：Tian, Yun[1,2];Chen, Weizhong[3];Tian, Hongming[3];Shu, Xiaoyun[4];He, Linkai[1,2];Huang, Man[1,2]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[2]Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Peoples R China;[3]Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China;[4]Hohai Univ, Coll Civil & Transportat Engn, Nanjing 210024, Peoples R China

年份：2024

卷号：16

期号：11

起止页码：4625

外文期刊名：JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001379103600001)、、Scopus(收录号：2-s2.0-85206680297)、WOS

基金：The authors gratefully acknowledge the support from the Na-tional Natural Science Foundation of China (Grant No. 42207199) , and Zhejiang Provincial Postdoctoral Science Foundation (Grant Nos. ZJ2022155 and ZJ2022156) . The authors are grateful to Prof. Weizhong Chen from the Institute of Rock and Soil Mechanics, Chinese Academy of Sciences for his kind help in this study.

语种：英文

外文关键词：Bedding plane; Three-dimensional (3D) printing; Physical model test; Non-uniform deformation; Digital imaging correlation (DIC)

外文摘要：Weak structural plane deformation is responsible for the non-uniform large deformation disasters in layered rock tunnels, resulting in steel arch distortion and secondary lining cracking. In this study, a servo biaxial testing system was employed to conduct physical modeling tests on layered rock tunnels with bedding planes of varying dip angles. The influence of structural anisotropy in layered rocks on the micro displacement and strain field of surrounding rocks was analyzed using digital image correlation (DIC) technology. The spatiotemporal evolution of non-uniform deformation of surrounding rocks was investigated, and numerical simulation was performed to verify the experimental results. The findings indicate that the displacement and strain field of the surrounding layered rocks are all maximized at the horizontal bedding planes and decrease linearly with the increasing dip angle. The failure of the layered surrounding rock with different dip angles occurs and extends along the bedding planes. Compressive strain failure occurs after excavation under high horizontal stress. This study provides significant theoretical support for the analysis, prediction, and control of non-uniform deformation of tunnel surrounding rocks. (c) 2024 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/).