华中科技大学学报（自然科学版）2026，Vol.54Issue(8)：1-11,11.DOI:10.13245/j.hust.230472
非连续面空间位态对砂岩洞室损伤破坏特性研究
Study on damage and failure characteristics of sandstone caverns based on discontinuity spatial configuration
摘要
Abstract
By conducting cyclic loading and unloading tests on a scaled model of discontinuous surfaces sandstone caverns with different spatial states,and combining multiple physical field monitoring techniques such as acoustic emission,resistivity,and digital imaging,the influence of discontinuous surface spatial states on the macroscopic fracture morphology and strength characteristics of sandstone caverns was explored.The results showed that the larger the inclination angle of the discontinuity and the distance from the cavern,the higher the peak strength.The dominant fracture path of surrounding rock is dominated by the spatial state of discontinuous surfaces,the newly formed cracks in the discontinuous surface cavity model of the side wall extend laterally due to stress concentration at the endpoints;the new cracks in the arch foot discontinuous surface cavern model originate from the arch bottom and arch foot,and connect the endpoints of the discontinuous surface.By using PFC simulation technology and moment tensor analysis methods,the influence law of the distance between the discontinuity endpoint and the cavern on the fracture position of the surrounding rock was revealed.The research results systematically elucidate the regulatory mechanism of discontinuous surface spatial states on the evolution of brittle rock cavity cracks,and deeply explore the macro and micro mechanical mechanisms of brittle rock crack nucleation,providing experimental basis and support for the stability evaluation of surrounding rock and disaster prevention and control in underground engineering.关键词
非连续面-洞室模型/多物理场监测/裂纹演化特征/非连续面空间构型/数值模拟Key words
discontinuity-cavern models/multi-physics field monitoring/crack evolution characteristics/discontinuity spatial configuration/numerical simulation分类
建筑与水利引用本文复制引用
张胜,徐怀胜,徐鼎平,夏勇,王猛..非连续面空间位态对砂岩洞室损伤破坏特性研究[J].华中科技大学学报（自然科学版）,2026,54(8):1-11,11.基金项目
国家自然科学基金资助项目(52279117,52325905) （52279117,52325905）
中国电建集团公开招标资助项目(DJ-HXGG-2023-04) （DJ-HXGG-2023-04）
岩土力学与工程安全全国重点实验室资助项目(SKLGME-JBGS2401). （SKLGME-JBGS2401）
