文献类型：期刊文献

英文题名：Analysis of Deformation Characteristics of Layered Rock Tunnel Excavation Based on Statistical Mechanics of Rock Masses

作者：Wu, Faquan[1];Wan, Weixin[1];Tian, Yun[1];Yang, Ying[2];Yang, Bing[3]

机构：[1]Shaoxing Univ, Sch Civil Engn, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Zhejiang, Peoples R China;[2]Handan Transportat Bur, Main Highway Construct Management Ctr, Renmin Rd 340, Handan 056002, Hebei, Peoples R China;[3]King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal 23955, Saudi Arabia

年份：2025

卷号：11

期号：1

外文期刊名：ASCE-ASME JOURNAL OF RISK AND UNCERTAINTY IN ENGINEERING SYSTEMS PART A-CIVIL ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001396460800025)、、EI(收录号：20244917482119)、Scopus(收录号：2-s2.0-85210870952)、WOS

基金：The authors gratefully acknowledge the support of the National Natural Science Foundation of China (Grant No. 42207199), Zhejiang Province International Science and Technology Cooperation Base Open Fund Project (IBGDP-2023-01), and Zhejiang Provincial Postdoctoral Science Foundation (Grant No. ZJ2022156).

语种：英文

外文关键词：Statistical mechanics of rock masses (SMRM); Layered rock mass; Tunnel excavation; Numerical simulation

外文摘要：Layered rock mass is prevalent in tunnel engineering, where deformation and failure of surrounding rock are primarily governed by discontinuity structural planes, leading to significant anisotropy in deformation and strength characteristics. Compared to continuous homogeneous rock masses, layered rock masses exhibit more complex engineering properties. This study utilized the constitutive theory of statistical mechanics of rock masses (SMRM) and Abaqus numerical software to analyze the influence of geometric, spatial, and mechanical characteristics of discontinuity structural planes on the stability of surrounding rock. The failure characteristics of tunnel surrounding rock with varying scales and orientations of carbonaceous slate discontinuity structural planes are examined. Additionally, the displacement distribution of surrounding rock under continuous medium conditions is compared between the SMRM constitutive theory and the Mohr-Coulomb constitutive theory. The results reveal that the SMRM constitutive theory aligns well with the Mohr-Coulomb theory under continuous medium conditions. The presence of discontinuity structural planes significantly diminishes the self-stability of the surrounding rock, with increased scale and density of structural planes amplifying their control effect. The direction of surrounding rock failure postexcavation is closely related to the formation occurrence and horizontal stress, manifesting as tangential shear sliding failure along the discontinuity structural plane and normal bending compression shear failure of the bedrock. Meanwhile, the model test results are employed to validate the feasibility of SMRM theory. This study provides an important reference for the analysis of deformation and failure mechanisms of layered rock masses with different joint surface parameters.