XU Jiang,CAO Qi,PENG Shoujian,et al. Experimental study of the influence of drainage conditions on sandstone mechanics and its deformation localization characteristics[J]. Coal Science and Technology,2023,51(9):189−201
. DOI: 10.12438/cst.2022-1190Citation: |
XU Jiang,CAO Qi,PENG Shoujian,et al. Experimental study of the influence of drainage conditions on sandstone mechanics and its deformation localization characteristics[J]. Coal Science and Technology,2023,51(9):189−201 . DOI: 10.12438/cst.2022-1190 |
In order to study the deformation localization failure characteristics of sandstone under the coupling action of seepage and stress, the triaxial compression tests of sandstone under different drainage conditions were carried out using the visualized triaxial servo control test system combined with three-dimensional digital image correlation (3D-DIC). The rock mechanics, seepage and deformation localization characteristics were analyzed, and the micro-morphology of fracture surface after sandstone failure was analyzed using electron microscope scanning. The results shown that the peak strength and elastic modulus of sandstone under drainage condition were higher than those under undrained condition, the peak strength, elastic modulus and Poisson’s ratio of sandstone increased with the increasing seepage water pressure, the time point of penetration crack and maximum permeability would be advanced. When the seepage water pressure was the same, the localized zone of deformation field cloud map of the sand surface was wider in the undrained condition than that in the drained condition, i.e., the macroscopic crack of rock was more obvious. Water flow under drained condition took away the mineral particles inside the rock and formed holes, the rupture surface of which was smoother than that under undrained condition, whereas flakes cuttings were obviously attached to the surface of the particles under undrained condition. The initiation point of radial deformation localization was consistently higher than that of axial deformation localization for all drainage conditions, with an average increase of 1.23%. The initiation stress levels of the radial and axial deformation localization increased with increasing seepage water pressure, i.e., the initiation time point was earlier. The radial and axial initiation stress level of sandstone under drainage condition were higher than those under undrained condition, with an average increase of 1.85% and 2.21% respectively. When the water pressure was the same, the initiation stress and stress level were more significantly affected by water pressure in the undrained condition than in the drained condition.
[1] |
蔡美峰, 何满潮, 刘东燕. 岩石力学与工程[M]. 北京: 科学出版社, 2009.
CAI Meifeng, HE Manchao, LIU Dongyan. Rock mechanics and engineering[M]. Beijing: Science Press, 2009.
|
[2] |
CHEN Y,XU J,PENG S,et al. Experimental study on the acoustic emission and fracture propagation characteristics of sandstone with variable angle joints[J]. Engineering Geology,2021,292:106247. doi: 10.1016/j.enggeo.2021.106247
|
[3] |
曾 晋. 温度−渗流−应力耦合作用下岩石损伤及声发射特征研究[J]. 水文地质工程地质,2018,45(1):69−74.
ZENG Jin. Study on rock damage and acoustic emission characteristics under coupled action of temperature-seepage-stress[J]. Hydrogeology Engineering Geology,2018,45(1):69−74.
|
[4] |
孙文吉斌. 页岩渗流−应力耦合作用下渗透特征研究[D]. 贵阳: 贵州大学, 2018.
SUN Wenjibin. Study on osmotic characteristics under shale seepage-stress coupling[D]. Guiyang: Guizhou University, 2018.
|
[5] |
张 超,宋卫东,李 腾,等. 破碎岩体应力-渗流耦合模型及数值模拟研究[J]. 采矿与安全工程学报,2021,38(6):1220−1230. doi: 10.13545/j.cnki.jmse.2020.0267
ZHANG Chao,SONG Weidong,LI Teng,et al. Coupled stress-seepage model and numerical simulation of fractured rock mass[J]. Chinese Journal of Mining and Safety Engineering,2021,38(6):1220−1230. doi: 10.13545/j.cnki.jmse.2020.0267
|
[6] |
刘晓冬. 储层岩石孔裂隙三维可视化及渗流−应力耦合研究[D]. 重庆: 重庆大学, 2019.
LIU Xiaodong. Three-dimensional visualization of pore fractures in reservoir rocks and study on seepage-stress coupling[D]. Chongqing: Chongqing University, 2019.
|
[7] |
KOU M M, LIU X R, WANG Z Q, et al. Laboratory investigations on failure, energy and permeability evolution of fissured rock-like materials under seepage pressures[J]. Engineering Fracture Mechanics. 2021, 247: 107694.
|
[8] |
HAMIEL Y,LYAKHOVSKY V,AGNON A. Rock dilation, nonlinear deformation and pore pressure change under shear[J]. Earth and Planetary Science Letters,2005,237:577−589. doi: 10.1016/j.jpgl.2005.06.028
|
[9] |
XIAO W,ZHANG D,WANG X. Experimental study on progressive failure process and permeability characteristics of red sandstone under seepage pressure[J]. Engineering Geology,2020,265:105406. doi: 10.1016/j.enggeo.2019.105406
|
[10] |
张培森,侯季群,赵成业,等. 不同围压不同损伤程度红砂岩渗流特性试验研究[J]. 岩石力学与工程学报,2020,39(12):2405−2415.
ZHANG Peisen,HOU Jiqun,ZHAO Chengye,et al. Experimental study on seepage characteristics of red sandstone with different degrees of damage under different confining pressures[J]. Chinese Journal of Rock Mechanics and Engineering,2020,39(12):2405−2415.
|
[11] |
张培森,赵成业,侯季群,等. 温度−应力−渗流耦合条件下红砂岩渗流特性试验研究[J]. 岩石力学与工程学报,2020,39(10):1957−1974.
ZHANG Peisen,ZHAO Chengye,HOU Jiqun,et al. Experimental study on seepage characteristics of red sandstone under temperature-stress-seepage coupling conditions[J]. Chinese Journal of Rock Mechanics and Engineering,2020,39(10):1957−1974.
|
[12] |
张培森,赵成业,侯季群,等. 高温与不同水压下深部砂岩渗透特性试验研究[J]. 岩石力学与工程学报,2020,39(6):1117−1128.
ZHANG Peisen,ZHAO Chengye,HOU Jiqun,et al. Experimental study on the permeability characteristics of deep sandstones at high temperature and different water pressure[J]. Chinese Journal of Rock Mechanics and Engineering,2020,39(6):1117−1128.
|
[13] |
张培森,侯季群,赵成业,等. 不同应力状态下底板岩体渗流特性分析研究[J]. 煤炭科学技术,2022,50(1):127−133.
ZHANG Peisen,HOU Jiqun,ZHAO Chengye,et al. Analysis of seepage characteristics of bottom slate mass under different stress conditions[J]. Coal Science and Technology,2022,50(1):127−133.
|
[14] |
TANG Y,OKUBO S,XU J,et al. Experimental study on damage behavior of rock in compression–tension cycle test using 3D digital image correlation[J]. Rock Mechanics and Rock Engineering,2019,52(5):1387−1394. doi: 10.1007/s00603-018-1685-9
|
[15] |
SHARAFIFISAFA M,SHEN Luming,XU Qingfeng. Characterization of mechanical behaviour of 3D printed rock-like material with digital image correlation[J]. International Journal of Rock Mechanics and Mining Sciences,2018,112(12):122−138.
|
[16] |
ALIABADIAN Z,ZHAO G F,RUSSELL A R. Crack development in transversely isotropic sandstone discs subjected to Brazilian tests observed using digital image correlation[J]. International Journal of Rock Mechanics and Mining Sciences,2019,119(7):211−221.
|
[17] |
宋义敏,凌小康,张敬宗,等. 基于数字散斑相关方法和有限元法的岩土材料力学参数反演[J]. 岩土力学,2021,42(10):2855−2864.
SONG Yimin,LING Xiaokang,ZHANG Jingzong,et al. Inversion of mechanical parameters of geotechnical materials based on digital speckle correlation method and finite element method[J]. Geotechnical Mechanics,2021,42(10):2855−2864.
|
[18] |
杨小彬,韩心星,王逍遥,等. 等幅循环加载岩石变形局部化带位移演化规律[J]. 煤炭学报,2019,44(4):1041−1048.
YANG Xiaobin,HAN Xinxing,WANG Xiaoyao,et al. Displacement evolution of rock deformation localization zone under equal amplitude cyclic loading[J]. Journal of China Coal Society,2019,44(4):1041−1048.
|
[19] |
王学滨,侯文腾,张博闻,等. 单轴压缩煤样三种应变的变异系数的统计分析[J]. 地球物理学进展,2018,33(4):1713−1720. doi: 10.6038/pg2018BB0303
WANG Xuebin,HOU Wenteng,ZHANG Bowen,et al. Statistical analyses of variation coefficients of three kinds of strains of coal specimens in uniaxial compression[J]. Progress in Geophysics,2018,33(4):1713−1720. doi: 10.6038/pg2018BB0303
|
[20] |
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):3263−3273.
OKUBO S,TANG Y,XU J,et al. 3D-DIC system in rock mechanics tests[J]. Rock and Soil Mechanics,2019,40(8):3263−3273.
|
[21] |
International society for rock mechanics. Suggested methods for determining the strength of rock material in triaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1978,15(2):47−51.
|
[22] |
大久保诚介,汤 杨,许 江,等. 可视化三轴压缩伺服控制试验系统的改进和应用[J]. 岩石力学与工程学报,2017,36(S1):238−245.
OKUBO S,TANG Y,XU J,et al. Improvement and application of visual three-axis compression servo control test system[J]. Chinese Journal of Rock Mechanics and Engineering,2017,36(S1):238−245.
|
[23] |
邓华锋,张恒宾,李建林,等. 水−岩作用对砂岩卸荷力学特性及微观结构的影响[J]. 岩土力学,2018,39(7):2344−2352.
DENG Huafeng,ZHANG Hengbin,LI Jianlin,et al. Effect of water-rock interaction on the unloading mechanical properties and microstructure of sandstone[J]. Rock and Soil Mechanics,2018,39(7):2344−2352.
|
[24] |
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. doi: 10.1016/j.ijrmms.2022.105064
|
[25] |
王 伟,陈 曦,田振元,等. 不同排水条件下砂岩应力渗流耦合试验研究[J]. 岩石力学与工程学报,2016,35(S2):3540−3551.
WANG Wei,CHEN Xi,TIAN Zhenyuan,et al. Coupling experimental study of stress and seepage in sandstone under different drainage conditions[J]. Journal of Rock Mechanics and Engineering,2016,35(S2):3540−3551.
|
[26] |
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):1197−1206.
PENG Shoujian,ZHANG Qianwen,XU Jiang,et al. Experimental study on localization characteristics of sandstone seepage-stress coupling deformation based on 3D digital image correlation technology[J]. Geotechnical Mechanics,2022,43(5):1197−1206.
|
[27] |
GE Y,CAI Z,ZHANG X,et al. An experimental investigation on the damage of granite under uniaxial tension by using a digital image correlation method[J]. Optics and Lasers in Engineering,2015,73:46−52. doi: 10.1016/j.optlaseng.2015.04.004
|
[1] | ZHOU Rui. Coal stress distribution law in reverse fault area[J]. COAL SCIENCE AND TECHNOLOGY, 2022, 50(8): 159-165. |
[2] | WANG Lei, ZHU Shangjun, JIANG Chuang, JIANG Kegui, GUO Qingbiao. Research on deformation monitoring and mining damage evaluation of buildings in mining area based on 3D laser scanning technology[J]. COAL SCIENCE AND TECHNOLOGY, 2022, 50(4): 213-222. |
[3] | HE Rong, LU Guang. Study on extraction method of surface deformation tilt based on 3D laser scanning[J]. COAL SCIENCE AND TECHNOLOGY, 2020, 48(11): 199-205. |
[4] | Cheng Shu Zhu Yuming Niu Yingie Dong Jajiang, . Application of 3D laser scanning technology in settlement monitoring of Expressway[J]. COAL SCIENCE AND TECHNOLOGY, 2020, 48(3). |
[5] | Ge Lanfeng Sun Yiyuan Zhang Ka Shen Jie Wei Yuchun, . Research on 3D modeling based on Creaform3D scanning system[J]. COAL SCIENCE AND TECHNOLOGY, 2020, 48(3). |
[6] | YANG Changyong, CHANG Huizhen. Study on micro-pore characteristics of structural coal in different coal bodies under scanning electron microscopy[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (12). |
[7] | WEN Hu, FAN Shixing, MA Li, GUO Jun, CHENG Xiaojiao, TONG Xiaozhang. CT Scanning Technology on coal-rock damage: a comprehensive review[J]. COAL SCIENCE AND TECHNOLOGY, 2019, (1). |
[8] | Wang Qiao Zhao Dong Feng Zengchao Zhou Dong Zhang Chao, . Experimental study on fracturing of coal by injection liquid nitrogen in drill based on CT scanning[J]. COAL SCIENCE AND TECHNOLOGY, 2017, (4). |
[9] | GUO Wen-bing BAI Er-hu CHEN Jun-jie, . Precision Analysis of 3D Laser Scanning to Monitor Mining Subsidence[J]. COAL SCIENCE AND TECHNOLOGY, 2014, (11). |
[10] | Study on Collection of Surface Scanning Data from Failure Zone of Similar Material Test Model[J]. COAL SCIENCE AND TECHNOLOGY, 2012, (8). |