文献类型：期刊文献

英文题名：Study on unstable energy release and failure mechanism of roadway surrounding rock induced by stiffness degradation

作者：Wu, Xukun Zhao, Guangming Xu, Youlin Liu, ChongYan Zhou, Bo

第一作者：吴旭坤

通信作者：Wu, XK[1]

机构：[1]Guizhou Inst Technol, Sch Min Engn, Guiyang 550025, Guizhou, Peoples R China;[2]Anhui Univ Sci & Technol, Sch Min Engn, Huainan 232001, Anhui, Peoples R China;[3]Anhui Univ Sci & Technol, Joint Natl Local Engn Res Ctr Safe & Precise Coal, Huainan 232001, Anhui, 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, Sch Min Engn, Guiyang 550003, Guizhou, Peoples R China.|贵州理工学院矿业工程学院;贵州理工学院;

年份：2026

卷号：197

外文期刊名：ENGINEERING FAILURE ANALYSIS

收录：;EI(收录号：20262721039789);Scopus(收录号：2-s2.0-105043642488);WOS:【SCI-EXPANDED(收录号:WOS:001814100600001)】；

基金：The authors are grateful for the financial support from Guizhou Science and Technology Plan Project (Qiankehe Platform NSSYS [2025] Major 001) , Coal-Major Project (2025ZD1700802) , Supported by Guizhou Science and Technology Project (Qiankehe Platform KXJZ [2024] 002) , and Top Expert Team for Bauxite Mining in Guizhou Province (Qiankehe Talent CXTD [2025] 024) . The authors would like to thank the editors and reviewers for their careful review and advice.

语种：英文

外文关键词：Stiffness effect; Energy release; Elastoplastic zone; Roof structure; Coordinated support

摘要：This work aims to elucidate the energy-release law under stiffness degradation to address imbalanced energy buildup and release, as well as induced deformation and failure, resulting from the stiffness deterioration of the surrounding rock of deep roadways. A stiffness degradationenergy linked release model of roadway surrounding rock was developed using the stiffness theory, energy theory, and FLAC3D numerical simulation. Energy release was examined in relation to the stiffness degradation zone, elastoplastic zone, and roof structure. The findings demonstrate that the residual energy release is much increased when the stiffness degradation zone range is expanded, and the stress concentration coefficient rises. Additionally, the energy release effect of stiffness degradation will be amplified by stress concentration, whereas the stimulating effect of stress concentration will be weakened by an increase in plastic zone width, which blocks the release by creating more energy dissipation pathways. The surrounding rock mass structure participates in energy release due to the expansion of the stiffness degradation degree, which causes the energy density in the degradation zone and neighboring areas to significantly increase. By altering the stress transfer path, the increased stiffness of the roof rock layer expands the release range while drastically reducing the energy release. Based on this, a coordinated support system technique of "controlling weak layers-adjusting stiffness-blocking transfer" was suggested, and the concept of stiffness-coordinated support for surrounding rock and support structure was presented. This approach maximizes the surrounding rock's capacity to support itself while limiting deformation by actively adjusting to changes in the stiffness of the surrounding rock.