文献类型：期刊文献

英文题名：A Progressive Failure Model of Deep Rocks Based on Plastic Hardening and Dilatancy Characteristics

作者：Liao, Ze Li, Peng Zhu, Yongjian Wu, Genshui Ren, Yanchuan Zhang, Huan Li, Ke

第一作者：廖泽

通信作者：Li, P[1]

机构：[1]Guizhou Inst Technol, Inst Min Engn, Guiyang 550025, Guizhou, Peoples R China;[2]Hunan Univ Sci & Technol, Sch Resource Environm & Safety Engn, Xiangtan 411201, Hunan, Peoples R China;[3]Guizhou Ansheng Energy Co Ltd, Engn Technol Dept, Guiyang 550081, Guizhou, Peoples R China;[4]Guizhou Meian Mine Technol Co Ltd, Engn Technol Dept, Guiyang 550025, Guizhou, Peoples R China;[5]Liupanshui Normal Univ, Sch Min & Mech Engn, Liupanshui 553000, Guizhou, Peoples R China

第一机构：贵州理工学院矿业工程学院

通信机构：corresponding author), Guizhou Inst Technol, Inst Min Engn, Guiyang 550025, Guizhou, Peoples R China.|贵州理工学院矿业工程学院;贵州理工学院;

年份：2025

卷号：2025

期号：1

外文期刊名：INTERNATIONAL JOURNAL OF ENERGY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001532123700001)】；

基金：This work was supported by the Guizhou Provincial Major Scientific and Technological Program (Grant QKHZDZX [2024] 029), the Guizhou Provincial Science and Technology Support Program (Grants QKHJC MS [2025] 186 and QKHJC-ZK [2022] General 176), the Guizhou Institute of Technology Research Initiation Fund Project (Grant 2023GCC049), and the Natural Science Research Project for Higher Education Institutions of Guizhou Provincial Department of Education (Grant QJJ [2024]162).

语种：英文

外文关键词：crack volumetric strain; deep rock mechanics; dilatancy feature; equivalent plastic strain; plastic hardening

摘要：In order to study the progressive damage process and damage evolution law of deep rocks, conventional triaxial compression tests were conducted on sandstone, sandy mudstone, and mudstone under different loading conditions using the RMT-150C electro-hydraulic servo rock mechanics test system. Analyze the stress-strain characteristics of rocks, the deformation characteristics of progressive damage at different stages, and the strength characteristics of rocks under different loading pressures. Introduce equivalent plastic strain as a unified independent variable, analyze the nonlinear evolution law of rock strength parameters (c and phi) and expansion parameters (psi) with equivalent plastic deformation, and establish a progressive rock damage model considering plastic hardening and expansion characteristics through rock strength parameters and expansion parameters. The results indicate that the progressive damage process of rocks can be divided into five stages: pore compression and density, linear elastic deformation, stable crack propagation, unstable crack propagation, and postpeak deformation. The strength of rock samples is mainly provided by the cohesive force parameter c, and the shear expansion angle psi gradually increases and then stabilizes with the change of equivalent plastic strain epsilon p. By fully considering the strain-softening and dilatancy characteristics of rock, a progressive damage evolution model for rock cohesion c, internal friction angle phi, and dilation angle psi was theoretically developed. The accuracy of the model was verified through discussion, providing better theoretical guidance for practical rock engineering practice.