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含非连续面的地下洞室在循环荷载作用下的渐进破坏机理是岩石工程领域的关键科学问题之一。采用室内试验与数值模拟相结合的研究方法，系统探究了拱肩非连续面-洞室模型在循环荷载作用下的强度特性与变形机制。综合运用声发射（acoustic emission,AE）、电阻率测试和数字图像相关（digital image correlation,DIC）技术，实现了对模型损伤演化过程的多维度同步监测。结果表明：非连续面的存在显著弱化了洞室结构的承载性能，其抗压强度随非连续面与洞室间距的增大及倾角的增大而提高；完整洞室模型的破坏模式主要表现为拱顶沉降及边墙片帮破坏，而含非连续面洞室模型的破裂行为受控于非连续面倾角，相同倾角条件下破裂模式具有相似性，且随非连续面与洞室间距的减小，结构整体破坏程度显著加剧；电阻率值随加载过程呈持续下降趋势，并伴随荷载波动呈现规律性变化，声发射活动在加载初期表现较弱，临近峰值强度时呈现显著活跃特征；非连续面几何参数对声发射事件演化规律影响较小，但对裂纹类型分布具有显著控制作用，即小倾角非连续面以张拉裂纹为主导，而大倾角非连续面则更易发育剪切裂纹。试验结果较好地再现了非连续面-洞室模型的裂纹扩展过程，为揭示其破裂机制提供了可靠依据，可为非连续面影响区地下洞室工程的稳定性评价与灾害防控提供理论支撑。
Abstract：The progressive damage mechanism of fault-bearing underground caverns under cyclic loading is one of the key scientific problems in the field of rock engineering. In this paper, the strength characteristics and deformation mechanism of the arch shoulder discontinuity-cavern models under cyclic loading are investigated systematically by combining indoor tests and numerical simulations. In the study, acoustic emission(AE), resistivity testing and digital image correlation(DIC) techniques was used to achieve multi-dimensional and simultaneous monitoring of the damage evolution process of the model. The results show that the presence of faults significantly weakens the load-bearing performance of the cavern structure, and its compressive strength increases with the increase of the discontinuity-cavern spacing and the angle. The rupture mode of the complete chamber model is mainly manifested as the settlement of the vault and the damage of the side walls, while the rupture behaviour of the discontinuity-cavern models is controlled by the inclination angle of the discontinuity, and the rupture modes under the same inclination angle are similar, and the damage of the structure as a whole increases with the decrease of the discontinuity-cavern spacing. The monitoring data show that the resistivity value decreases continuously with the loading process and changes regularly with the load fluctuation; the acoustic emission activity is weak at the beginning of the loading process, and then becomes active when approaching the peak intensity. The geometric parameters of the faults have less influence on the evolution of the acoustic emission events, but have a significant control on the distribution of crack types: small-dip discontinuities are dominated by tension cracks, while large-dip discontinuities are more prone to develop shear cracks. The experimental results better reproduce the crack extension process of the discontinuity-cavern models, which provides a reliable basis for revealing the rupture mechanism, and the research results provide important theoretical support for the stability evaluation and disaster prevention and control of underground cave projects in discontinuity-affected areas.
[1]张骁，张雪辉，白云.基于贝叶斯网络-风险矩阵法的地下工程风险管理——既有建筑物地下空间开发工程中的动态风险管理[J].安全与环境工程，2017, 24(6):176-183.ZHANG X, ZHANG X H, BAI Y. Risk management method based on Bayesian network-risk matrix—Dynamic risk management of excavation project of existing buildings[J].Safety and Environmental Engineering, 2017, 24(6):176-183.
[2]唐连松，陈刚，胡成.封洞库低渗介质地下水渗流场数值模型的参数反演[J].安全与环境工程，2019, 26(4):1-7.TANG L S, CHEN G, HU C. Parameter inversion study of low permeability media seepage numerical model for groundwater-sealed cavern[J]. Safety and Environmental Engineering, 2019, 26(4):1-7.
[3]张志，吴梦涵.基于CiteSpace的中国城市地下空间研究发展综述[J].安全与环境工程，2023, 30(1):25-34.ZHANG Z, WU M H. Summary of research and development of urban underground space in China based on CiteSpace[J].Safety and Environmental Engineering, 2023, 30(1):25-34.
[4] XU H S, LI S J, XU D P, et al. The influence of steep faults at various avoidance distances on the stability of hard rock caverns:Physical model experiments and DEM simulations[J].Tunnelling and Underground Space Technology, 2024, 154:106100.
[5] XU H, LI S, XU D, et al. Investigation on the failure mechanism of hard rock cavern subjected to adjacent structural plane based on physical model experiments[J]. Theoretical and Applied Fracture Mechanics, 2024, 131:104447.
[6]陈陆望，白世伟.坚硬脆性岩体中圆形洞室岩爆破坏的平面应变模型试验研究[J].岩石力学与工程学报，2007, 26(12):2504-2509.CHEN L W, BAI S W. Research on plane strain model test of rockburst of circular cavern in hard brittle rockmass[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(12):2504-2509.
[7]陈陆望，白世伟，殷晓曦，等.坚硬岩体中马蹄形洞室岩爆破坏平面应变模型试验[J].岩土工程学报，2008, 30(10):1520-1526.CHEN L W, BAI S W, YIN X X, et al. Plane-strain model tests on rock-burst of horseshoe section caverns in hard and brittle rockmass[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(10):1520-1526.
[8]钟志彬，邓荣贵，肖维民，等.含直墙拱形洞室坚硬流纹岩双轴压缩试验研究[J].铁道学报，2016, 38(8):110-118.ZHONG Z B, DENG R G, XIAO W M, et al. Experimental study on an arched opening with straight wall in hard rhyolite under biaxial test[J]. Journal of the China Railway Society,2016, 38(8):110-118.
[9]张胜，徐鼎平，石汉明，等.峰前循环扰动下的深埋花岗岩特征参数演化规律与损伤变量研究[J].岩土力学，2025, 46(1):73-87.ZHANG S, XU D P, SHI H M, et al. Study on evolution pattern of characteristic parameters and damage variables of deeply buried granite under pre-peak cyclic disturbance[J].Rock and Soil Mechanics, 2025, 46(1):73-87.
[10]ZHANG S, XU D P, QIU S L, et al. A fatigue damage model for sandstone based on acoustic emission and resistivity parameters[J]. Construction and Building Materials, 2024,438:137286.
[11]ZHANG S, XU D P, QIU S L, et al. Experimental and theoretical study on cyclic fatigue damage evolution of sandstone based on acoustic emission monitoring and resistivity measuring[J]. Measurement, 2025, 245:116633.
[12]王凯，左晓欢，杜锋，等.循环载荷作用下煤岩复合结构宏-细观破坏特征及能量-损伤本构模型[J].煤炭学报，2024, 49(2):767-784.WANG K, ZUO X H, DU F, et al. Macro-mesoscopic perspective damage characteristics and energy-damage constitutive model of coal-rock composite structures subjected to cyclic loading[J]. Journal of China Coal Society, 2024, 49(2):767-784.
[13]刘剑，周宗红，张晶，等.闪长岩不同卸荷速率声发射特征及非稳定阶段识别[J].岩土力学，2025, 46(1):225-232, 243.LIU J, ZHOU Z H, ZHANG J, et al. Acoustic emission characteristics of diorite at varying unloading rates and identification of its unsteady phases[J]. Rock and Soil Mechanics, 2025, 46(1):225-232, 243.
[14]贾蓬，王茵，王琦伟，等.循环加卸载条件下红砂岩电阻率及声发射响应试验研究[J].岩石力学与工程学报，2024, 43（增刊1）:3333-3341.JIA P, WANG Y, WANG Q W, et al. Experimental study on resistivity and acoustic emission characteristics of red sandstone under cyclic loading[J]. Chinese Journal of Rock Mechanics and Engineering, 2024, 43(S1):3333-3341.
[15]赵金帅，陈炳瑞，江权，等.爆破荷载下白鹤滩大型地下厂房累积损伤机制研究[J].岩石力学与工程学报，2022, 41(5):916-925.ZHAO J S, CHEN B R, JIANG Q, et al. Study on cumulative damage mechanisms of Baihetan large underground powerhouse under blasting loads[J]. Chinese Journal of Rock Mechanics and Engineering, 2022, 41(5):916-925.
[16]范杰，朱星，胡桔维，等.基于3D-DIC的砂岩裂纹扩展及损伤监测试验研究[J].岩土力学，2022, 43(4):1009-1019.FAN J, ZHU X, HU J W, et al. Experimental study on crack propagation and damage monitoring of sandstone using threedimensional digital image correlation technology[J]. Rock and Soil Mechanics, 2022, 43(4):1009-1019.
[17]姜彤，万里，黄坤，等.基于固有频率的岩石压剪断裂演化过程试验研究[J].中国矿业大学学报，2024, 53(5):901-914.JIANG T, WAN L, HUANG K, et al. Experimental investigation on the evolution of rock compression-shear fracture using the natural frequency[J]. Journal of China University of Mining&Technology, 2024, 53(5):901-914.
[18]HUANG F, WU C, NI P, et al. Experimental analysis of progressive failure behavior of rock tunnel with a fault zone using non-contact DIC technique[J]. International Journal of Rock Mechanics and Mining Sciences, 2020, 132:104355.
[19]MIAO S, PAN P Z, KONICEK P, et al. Rock damage and fracturing induced by high static stress and slightly dynamic disturbance with acoustic emission and digital image correlation techniques[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2021, 13(5):1002-1019.
[20]ZHANG L, ZHANG Z, CHEN Y, et al. Crack development and damage patterns under combined dynamic-static loading of parallel double fractured rocks based on DIC technique[J]. Acta Geotechnica, 2023, 18(2):877-901.
[21]LAI X P, SHAN P F, CAO J T, et al. Simulation of asymmetric destabilization of mine-void rock masses using a large 3D physical model[J]. Rock Mechanics and Rock Engineering, 2016, 49(2):487-502.
[22]OU Y, ZHANG P, WANG W. Study on the evolution rule of land damage based on electrical resistivity imaging technology in mining face[J]. Geotechnical and Geological Engineering,2019, 37(5):4259-4268.
[23]ZHANG W, SUN Q, ZHU S, et al. The effect of thermal damage on the electrical resistivity of sandstone[J]. Journal of Geophysics and Engineering, 2017, 14(2):255-261.
[24]WU C, GONG F, LUO Y. A new quantitative method to identify the crack damage stress of rock using AE detection parameters[J]. Bulletin of Engineering Geology and the Environment, 2021, 80(1):519-531.
[25]WANG Y, FENG W K, WANG H J, et al. Rock bridge fracturing characteristics in granite induced by freeze-thaw and uniaxial deformation revealed by AE monitoring and post-test CT scanning[J]. Cold Regions Science and Technology, 2020,177:103115.
基本信息:
DOI：10.13578/j.cnki.issn.1671-1556.20250152
中图分类号:TU45
引用信息:
[1]江浩,李仁杰,王立波,等.循环荷载作用下拱肩非连续面-洞室模型损伤破裂机制试验研究[J].安全与环境工程,2025,32(05):33-46.DOI:10.13578/j.cnki.issn.1671-1556.20250152.
基金信息:
国家自然科学基金项目(52279117)