渗流–应力耦合下砂岩广义应力松弛特性与流变破坏机制研究

doi:10.3724/1000-6915.jrme.2024.0807

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (2220 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要围岩长期强度的研究对地下空间稳定性评价有着重要的工程意义。利用自主研发的可视化三轴压缩伺服控制试验系统，实现渗流–应力耦合下砂岩的广义应力松弛试验。研究结果表明：在为3和方向上试件发生破坏时，较大应变产生的范围会逐渐向宏观断裂区域集中，并呈现出张拉–剪切破坏的趋势。采用指数型函数对破坏条件下砂岩的应变变化速率进行拟合，效果较好。试件渗透率随流变发展呈现出先快速下降再缓慢上升的趋势。随着渗透水压的升高，流变后砂岩试件的孔隙率持续增加，分别为1.72%，3.52%和12.86%，断裂面整体破坏严重。在流变过程中砂岩中黏土矿物的水解与侵蚀作用加剧，造成矿物颗粒结构的松散，从而形成宏观断裂。同时，孔隙水压也会对矿物颗粒产生水解与物理作用，导致晶体上剥落大量的岩屑并附着于其表面。从断裂力学的角度来看，渗透水压的增大也会引起砂岩中裂纹的扩展速度加快，使得应力水平对砂岩广义应力松弛特性的影响越来越显著，导致高渗透水压作用下砂岩更容易产生断裂。孔隙水压力也会造成砂岩内胶结物质溶解破坏，脱离晶体表面并形成明显的裂纹，导致渗流–应力耦合下砂岩的破坏模式主要为沿晶断裂。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	陈奕安1
	赵光明1
	许文松1
	许江2
	彭守建2

关键词 ：岩石力学, 广义应力松弛, 渗流&ndash, 应力耦合, 流变特性, 断裂特征, 流变破坏机制

Abstract：The investigation of the long-term strength of surrounding rock is of significant engineering importance for the stability assessment of underground spaces. The user-developed visual triaxial compression servo control test system is used to conduct generalized stress relaxation tests on sandstone under seepage-stress coupling conditions. The results indicate that the large strain zone gradually converges to the macroscopic fracture region，exhibiting a tension-shear failure trend when the samples are damaged under the conditions of = 3 and directions. An exponential function effectively fits the strain rate of sandstone，demonstrating strong fitting performance. The permeability of the sample decreases rapidly at first and then increases gradually during the rheological progress. The porosity of the sample after the rheological test increases continuously with the rise in seepage pressure，with values of 1.72%，3.52% and 12.86%，respectively，and degree of the damage to the fracture surface is significant. It is observed that the hydrolysis and erosion of clay minerals in the sandstone are intensified，leading to the loosening of mineral particle structures and the formation of macroscopic fractures. Additionally，pore pressure induces hydrolysis and physical effects on the mineral particles，causing substantial amounts of rock debris to be detached from the crystals and accumulate on the fracture surface. From a fracture mechanics perspective，the increase in seepage pressure accelerates the crack propagation rate in sandstone，making the influence of stress levels on the generalized stress relaxation behavior of sandstone more pronounced. Consequently，the results in the samples becoming more susceptible to fracture under high seepage pressure. The pore pressure promotes the dissolution and destruction of the cementing material in the sandstone，causing it to detach from the crystal surface and form distinct cracks. Consequently，the failure mode of sandstone under seepage-stress coupling is predominantly characterized by intergranular fractures.

Key words： rock mechanics generalized stress relaxation seepage-stress coupling rheological behavior fracture characteristics rheological failure mechanism

引用本文:

陈奕安1，赵光明1，许文松1，许江2，彭守建2. 渗流–应力耦合下砂岩广义应力松弛特性与流变破坏机制研究[J]. 岩石力学与工程学报, 2025, 44(5): 1286-1299.
CHEN Yian1，ZHAO Guangming1，XU Wensong1，XU Jiang2，PENG Shoujian2. Study on generalized stress relaxation behavior and rheological failure mechanism of sandstone under seepage-stress coupling. , 2025, 44(5): 1286-1299.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.3724/1000-6915.jrme.2024.0807 或 https://rockmech.whrsm.ac.cn/CN/Y2025/V44/I5/1286

[1]	孙腾民，刘世奇，汪涛. 中国二氧化碳地质封存潜力评价研究进展[J]. 煤炭科学技术，2021，49(11)：10-20.(SUN Tengmin，LIU Shiqi，WANG Tao. Research advances on evaluation of CO2 geological storage potential in China[J]. Coal Science and Technology，2021，49(11)：10-20.(in Chinese))
[2]	LI J，XIE H，LU J，et al. New permeability model of deep coal rock considering the structure and 3D stress compression-induced anisotropy[J]. Geomechanics and Geophysics for Geo-Energy and Geo-Resources，2022，8(6)：204.
[3]	XIE H，ZHANG R，ZHANG Z，et al. Preliminary research and scheme design of deep underground in situ geo-information detection experiment for Geology in time[J]. International Journal of Mining Science and Technology，2024，34(1)：1-13.
[4]	赵阳升. 岩体力学发展的一些回顾与若干未解之百年问题[J]. 岩石力学与工程学报，2021，40(7)：1 297-1 336.(ZHAO Yangsheng. Retrospection on the development of rock mass mechanics and the summary of some unsolved centennial problems[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(7)：1 297-1 336.(in Chinese))
[5]	CHEN Y，XU J，PENG S，et al. Strain localisation and seepage characteristics of rock under triaxial compression by 3D digital image correlation[J]. International Journal of Rock Mechanics and Mining Sciences，2022，152：105064.
[6]	于洪丹，崔景川，陈卫忠，等. 核废料地下储库围岩长期水力响应特征[J]. 岩石力学与工程学报，2022，41(增1)：2 639-2 648.( YU Hongdan，CUI Jingchuan，CHEN Weizhong，et al. Characterization of the long-term hydro-mechanical response in the host rock of a potential nuclear waste disposal repository[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(Supp.1)：2 639-2 648.(in Chinese))
[7]	任奕，徐邓，刘建锋，等. 盐岩三轴蠕变与损伤恢复变形特征研究[J]. 地下空间与工程学报，2021，17(6)：1 789-1 795.(REN Yi，XU Deng，LIU Jianfeng，et al. Deformation characteristics investigation on triaxial creep and damage healing of salt rock[J]. Chinese Journal of Underground Space and Engineering，2021，17(6)：1 789-1 795.(in Chinese))
[8]	王波，刘重阳，陈学习，等. 蠕变扰动效应下红砂岩强度极限邻域试验研究[J]. 煤炭科学技术，2021，49(9)：54-60.(WANG Bo，LIU Chongyang，CHEN Xuexi，et al. Experimental study on range of strength limit neighborhood of red sandstone under effect of creep disturbance[J]. Coal Science and Technology，2021，49(9)：54-60. (in Chinese))
[9]	黄万朋，孙远翔，陈绍杰. 岩石蠕变扰动效应理论及其在深地动压工程支护中的应用[J]. 岩土工程学报，2021，43(9)：1 621- 1 630.(HUANG Wanpeng，SUN Yuanxiang，CHEN Shaojie. Theory of creep disturbance effect of rock and its application in support of deep dynamic engineering[J]. Chinese Journal of Geotechnical Engineering，2021，43(9)：1 621-1 630.(in Chinese))
[10]	马丹，段宏宇，张吉雄，等. 断层破碎带岩体突水灾害的蠕变﹣冲蚀耦合力学特性试验研究[J]. 岩石力学与工程学报，2021，40(9)：1 751-1 763.(MA Dan，DUAN Hongyu，ZHANG Jixiong，et a1. Experimental investigation of creep-erosion coupling mechanical properties of water inrush hazards in fault fracture rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(9)：1 751-1 763.(in Chinese))
[11]	龚囱，赵坤，包涵，等. 红砂岩蠕变破坏声发射震源演化及其分形特征[J]. 岩土力学，2021，41(10)：2 683-2 695.(GONG Cong，ZHAO Kun，BAO Han，et al. Acoustic emission source evolution and fractal features during creep failure of red sandstone[J]. Rock and Soil Mechanics，2021，41(10)：2 683-2 695.(in Chinese))
[12]	周瑞鹤，程桦，蔡海兵，等. 三轴压缩分级卸荷条件下粉砂岩蠕变特性及蠕变模型[J]. 岩石力学与工程学报，2022，41(6)：1 136-1 147.(ZHOU Ruihe，CHENG Ye，CAI Haibing，et a1. Creep characteristics and creep model of siltstone under triaxial[J]. Chinese Journal of Rock Mechanics and Engineering，2022，41(6)：1 136- 1 147.(in Chinese))
[13]	苏荣华，李超，马志远. 考虑初始损伤效应的砂岩蠕变扰动特性研究[J]. 中国安全科学学报，2021，31(9)：36-43.(SU Ronghua，LI Chao，MA Zhiyuan. Study on creep disturbance characteristics of sandstone considering initial damage effect[J]. China Safety Science Journal，2021，31(9)：36-43.(in Chinese))
[14]	刘鼎，许军策，浦海. 不同含水率下矸石胶结充填体蠕变特性试验研究[J]. 采矿与安全工程学报，2021，38(5)：1 055-1 062.(LIU Ding，XU Junce，PU Hai. Experimental study on creep characteristics of gangue cemented fillers with different water content[J]. Journal of Mining and Safety Engineering，2021，38(5)：1 055-1 062.(in Chinese))
[15]	LYU C，LIU J，REN Y，et al. Study on very long-term creep tests and nonlinear creep-damage constitutive model of salt rock[J]. International Journal of Rock Mechanics and Mining Sciences，2021，146：104873.
[16]	冯夏庭，肖亚勋，丰光亮，等. 岩爆孕育过程研究[J]. 岩石力学与工程学报，2019，38(4)：649-673.(FENG Xiating，XIAO Yaxun，FENG Guangliang，et a1. Study on the development process of rockbursts[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(4)：649-673.(in Chinese))
[17]	颜天佑，崔臻，张勇慧，等．跨活动断裂隧洞工程赋存区域地应力场分布特征研究[J]．岩土力学，2018，39(增1)：378-386.( YAN Tianyou，CUI Zhen，ZHANG Yonghui，et al. Study of distribution characteristic of in-situ stress field in occurrence area of crossing active fault tunnel engineering[J]. Rock and Soil Mechanics，2018，39(Supp.1)：378-386.(in Chinese))
[18]	FUKUI K，OKUBO S. Generalized relaxation behaviour of rock under uniaxial compression[J]. Journal of Mining and Materials Processing Institute of Japan，1992，108(5)：543-548.
[19]	许江，宋肖徵，彭守建，等. 基于3D-DIC技术岩石广义应力松弛特性试验研究[J]. 岩土力学，2021，42(1)：27-38.(XU Jiang，SONG Xiaozheng，PENG Shoujian，et al. Experimental study of generalized stress relaxation of rock based on 3D-DIC technology[J]. Rock and Soil Mechanics，2021，42(1)：27-38.(in Chinese))
[20]	许江，马天宇，大久保诚介，等. 不同围压下岩石广义应力松弛特性试验研究[J]. 岩土力学，2017，38(增2)：57-66.(XU Jiang，MA Tianyu，OKUBO Seisuke，et al. Experimental study of generalized stress relaxation characteristics of rock under different confining pressures[J]. Rock and Soil Mechanics，2017，38(Supp.2)：57-66.(in Chinese))
[21]	张海龙，许江，大久保诚介，等. 河津凝灰岩广义应力松弛特性及数值模拟研究[J]. 岩土力学，2017，38(4)：1 089-1 096.( ZHANG Hailong，XU Jiang，OKUBO Seisuke，et al. Generalized relaxation properties and numerical simulation of Kawazu tuff[J]. Rock and Soil Mechanics，2017，38(4)：1 089-1 096.(in Chinese))
[22]	彭守建，张倩文，许江，等. 基于三维数字图像相关技术的砂岩渗流-应力耦合变形局部化特性试验研究[J]. 岩土力学，2022，43(5)：1 197-1 206.(PENG Shoujian，ZHANG Qianwen，XU Jiang，et al. Experimental study of deformation localization characteristics of sandstone under seepage-stress coupling based on 3D digital image correlation technology[J]. Rock and Soil Mechanics，2022，43(5)： 1 197-1 206.(in Chinese))
[23]	XUE Y，ZHOU B，LI S，et al. Deformation rule and mechanical characteristic analysis of subsea tunnel crossing weathered trough[J]. Tunnelling and Underground Space Technology，2021，114：103989.
[24]	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)：1 009-1 019.( FAN Jie，ZHU Xing，HU Juewei，et al. Experimental study on crack propagation and damage monitoring of sandstone using three-dimensional digital image correlation technology[J]. Rock and Soil Mechanics，2022，43(4)：1 009-1 019.(in Chinese))
[25]	杜凯，邓建华，王化俗，等. 基于3D?DIC技术的约束岩石裂缝扩展研究[J]. 力学季刊，2021，42(4)：743-751.(DU Kai，DENG Jianhua，WANG Huasu，et al. Research on constrained rock crack propagation based on 3D?DIC technology[J]. Chinese Quarterly of Mechanics，2021，42(4)：743-751.(in Chinese))
[26]	MUNOZ H，TAHERI A，CHANDA E. Fracture energy-based brittleness index development and brittleness quantification by pre-peak strength parameters in rock uniaxial compression[J]. Rock Mechanics and Rock Engineering，2016，49(12)：4 587-4 606.
[27]	大久保诚介，汤杨，许江，等. 3D-DIC系统在岩石力学试验中的应用[J]. 岩土力学，2019，40(8)：3 263-3 273.(SEISUKE Okubo，TANG Yang，XU Jiang，et al. Application of 3D-DIC system in rock mechanic test[J]. Rock and Soil Mechanics，2019，40(8)：3 263- 3 273.(in Chinese))
[28]	陈奕安，许江，彭守建，等. 可视化三轴渗流-应力耦合伺服控制试验系统的研制与应用[J]. 岩石力学与工程学报，2023，42(增1)：3 281-3 292.(CHEN Yian，XU Jiang，PENG Shoujian，et al. Development and application of transparent triaxial seepage-stress coupling servo-control test system[J]. Chinese Journal of Rock Mechanics and Engineering，2023，42(Supp.1)：3 281-3 292.(in Chinese))
[29]	李世愚，和泰名，尹祥础. 岩石断裂力学导论[M]. 合肥：中国科学技术大学出版社，2010：312-317.(LI Shiyu，HE Taiming，YIN Xiangchu. Introduction of rock fracture mechanics[M]. Hefei：Press of University of Science and Technology of China，2010：312-317.(in Chinese))