岩土力学2026，Vol.47Issue(6)：1865-1877,13.DOI:10.16285/j.rsm.2025.0872
基于Hoek-Brown准则的压气储能洞室围岩非线性力学响应
Nonlinear mechanical response of surrounding rock in compressed air energy storage cavern based on Hoek-Brown criterion
摘要
Abstract
Based on the Hoek-Brown strength criterion,this study develops a semi analytical approach for calculating the stress and displacement of surrounding rock throughout the excavation and high-pressure operation stages of a compressed gas energy storage cavern,thereby elucidating the evolution patterns of the stress path and failure mode in the surrounding rock.The findings reveal that the geological parameters exert minimal influence on the distribution of radial stresses within the surrounding rock,and significantly affect the distribution of circumferential stresses.Poorer geological conditions lead to a larger circumferential stress and a wider plastic zone.For medium-soft rock formations(e.g.geological strength index GSI=35),the Mohr-Coulomb strength criterion may overestimate the bearing capacity of surrounding rock during high-pressure air storage stage.Should the surrounding rock transition into a plastic state during cavern excavation,it will be subjected to both radial and circumferential compression under conditions of high internal gas pressure.As the internal gas pressure escalates,the stress state of the surrounding rock sequentially progresses through plastic unloading,plastic loading,and plastic expansion stages.Notably,the critical internal pressure threshold during the plastic expansion stage is roughly twice the initial in-situ stress.Once the internal gas pressure reaches this critical pressure,the radius of the plastic zone in the surrounding rock expands almost linearly with the internal pressure,resulting in a swift enlargement of the plastic zone and a nonlinear surge in the displacement of the surrounding rock.Consequently,under unfavorable geological conditions,it is inadvisable to indiscriminately elevate the maximum gas storage pressure within the cavern.关键词
压气储能/地下洞室/围岩/应力路径/Hoek-Brown强度准则/解析解Key words
compressed air energy storage/underground caverns/surrounding rock/stress path/Hoek-Brown strength criterion/analytical solution分类
交通工程引用本文复制引用
徐晨,邓兴富,程丽娟,夏才初..基于Hoek-Brown准则的压气储能洞室围岩非线性力学响应[J].岩土力学,2026,47(6):1865-1877,13.基金项目
国家自然科学基金(No.U23B20145) （No.U23B20145）
国家重点研发计划政府间合作专项(No.2024YFE0105800) （No.2024YFE0105800）
中国电建集团核心攻关项目(No.DJ-HXGG-2023-09) （No.DJ-HXGG-2023-09）
中央引导地方科技发展资金项目(No.2025ZY01028).This work was supported by the National Natural Science Foundation of China(U23B20145),the National Key Research and Development Program of China—Government Cooperation Special Project(2024YFE0105800),the Key Research Project of PowerChina(DJ-HXGG-2023-09)and the Central Government Funding Program for Guiding Local Science and Technology Development(2025ZY01028). （No.2025ZY01028）
