黄金科学技术 ›› 2024, Vol. 32 ›› Issue (2): 280-289.doi: 10.11872/j.issn.1005-2518.2024.02.012
摘要:
针对目前制备不同含水饱和度岩石试样存在的精度低和试样内部含水分布不均匀等问题,基于渗透技术和化学热力学原理,设计了一种恒湿环境下不同含水饱和度岩石试样制备装置,并通过核磁共振成像实验验证了该装置精确制备水分均匀分布岩石试样的合理性。同时,利用该装置开展了不同含水饱和度条件下砂岩常应变率压缩试验。结果表明:砂岩的单轴抗压强度和弹性模量均随着含水饱和度的增加而降低,随着围压的增大,试样砂岩压密阶段减弱,试样的变形经历弹脆性—弹塑性—应变硬化的过程。研究结果为不同含水饱和度岩石试样的精确制备提供了新的方法和思路。
中图分类号:
Baud P, Zhu W, Wong T F,2000.Failure mode and weakening effect of water on sandstone[J].Journal of Geophysical Research:Solid Earth,105(B7):16371-16389. | |
Chao Zhiming, Wang Huanling, Xu Weiya,et al,2018.A rapid method for preparing rock samples with different water saturation levels[J].Rock and Soil Mechanics,39(3):1109-1114. | |
Fu T F, Xu T, Meredith P G,et al,2021a.A meso-mechanical approach to time-dependent deformation and fracturing of partially saturated sandstone[J].International Journal of Rock Mechanics and Mining Sciences, 145:104840. | |
FuT F, Xu T, Heap M,et al,2021b.Analysis of capillary water imbibition in sandstone via a combination of nuclear magnetic resonance imaging and numerical DEM modeling[J].Engineering Geology,285:106070. | |
Grgic D, Amitrano D,2009.Creep of a porous rock and associated acoustic emission under different hydrous conditions[J].Journal of Geophysical Research: Solid Earth,114(B10):B10201. | |
Hawkins A, McConnell B,1992.Sensitivity of sandstone streng-th and deformability to changes in moisture content[J].Quarterly Journal of Engineering Geology and Hydrogeology,25(2):115-130. | |
Heap M J, Villeneuve M, Kushnir A R,et al,2019. Rock mass strength and elastic modulus of the Buntsandstein:An important lithostratigraphic unit for geothermal exploitation in the Upper Rhine Graben[J].Geothermics,77:236-256. | |
Jiang Jingdong, Chen Shengshui, Xu Jie,et al,2018.Mechanical properties and energy characteristics of mudstone under different containing moisture states[J].Journal of China Coal Society,43(8):2217-2224. | |
Lajtai E Z, Schmidtke R H, Bielus L P,1987.The effect of water on the time-dependent deformation and fracture of a granite[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,24(4):247-255. | |
Li Dazhen,1982.Chemical Thermodynamics Foundation[M].Beijing:Beijing Normal University Press. | |
Liu Bo, Sun Yanding, Yuan Yifeng,et al,2020.Strength characteristics of frozen sandstone with different water content and its strengthening mechanism[J].Journal of China University of Mining and Technology,49(6):1085-1093,1127. | |
Liu Ding, Xu Junce, Pu Hai,2021.Experimental study on creep characteristics of gangue cemented fillers with different water content[J].Journal of Mining and Safety Engineering,38(5):1055-1062. | |
Liang X, Tang C A, Hu L H,et al,2023.Shear behavior and fracturing mechanism of intact sandstone affected by spatio-temporally varying water[J].Computers and Geotechnics,155:105200. | |
Shakoor A, Barefield E H,2009.Relationship between unconfined compressive strength and degree of saturation for selected sandstones[J].Environmental and Engineering Geoscience,15(1):29-40. | |
Su Chengdong, Fu Yisheng,2014.Experimental study of triaxial compression deformation and strength characteristics of red sandstone[J].Chinese Journal of Rock Mechanics and Engineering,33(Supp.1):3164-3169. | |
Tang S B,2018.The effects of water on the strength of black sandstone in a brittle regime[J].Engineering Geology, 239:167-178. | |
Tang Youqi,1984.Phase Equilibrium,Chemical Equilibrium and Thermodynamics[M].Beijing:Science Press. | |
Verstrynge E, Adriaens R, Elsen J,et al,2014. Multi-scale analysis on the influence of moisture on the mechanical behavior of ferruginous sandstone[J].Construction and Building Materials,54:78-90. | |
Wong L N Y, Maruvanchery V, Liu G,2016.Water effects on rock strength and stiffness degradation[J].Acta Geotechnica,11(4):713-737. | |
Wu Yanqing, Zhang Zhuoyuan,1995. Introduction to Rock Mass Hydraulics[M]. Chengdu:Southwest Jiaotong University Press. | |
Yang Yongming, Ju Yang, Chen Jialiang,et al,2014. Cracks development features and energy mechanism of dense sandstone subjected to triaxial stress[J].Chinese Journal of Rock Mechanics and Engineering,33(4):691-698. | |
Zhao Honghe, Yang Xiaolin, Gao Fuqiang,et al,2014.Discussion on preparing methods of rock samples with different water contents[J].Journal of Luoyang Institute of Science and Technology,24(1):4-7. | |
Zhou Hui, Li Zhen, Song Yuze,et al,2013.Chemo-thermodynamical method for precisely preparing rock sample with different water contents[J].Rock and Soil Mechanics,34(2):311-315. | |
Zhou Zilong, Xiong Cheng, Cai Xin,et al,2018. Mechanical and infrared radiation properties of sandstone with different water contents under uniaxial compression[J].Journal of Central South University(Science and Technology),49(5):1189-1196. | |
巢志明,王环玲,徐卫亚,等,2018.一种快速制备不同含水饱和度岩石试样的方法[J].岩土力学,39(3):1109-1114. | |
蒋景东,陈生水,徐婕,等,2018.不同含水状态下泥岩的力学性质及能量特征[J].煤炭学报,43(8):2217-2224. | |
李大珍,1982.化学热力学基础[M].北京:北京师范大学出版社. | |
刘波,孙颜顶,袁艺峰,等,2020.不同含水率冻结砂岩强度特性及强度强化机制[J].中国矿业大学学报,49(6):1085-1093,1127. | |
刘鼎,许军策,浦海,2021.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,38(5):1055-1062. | |
苏承东,付义胜,2014.红砂岩三轴压缩变形与强度特征的试验研究[J].岩石力学与工程学报,33(增1):3164-3169. | |
唐有祺,1984.相平衡、化学平衡和热力学[M].北京: 科学出版社. | |
仵彦卿,张倬元,1995.岩体水力学导论[M].成都:西南交通大学出版社. | |
杨永明,鞠杨,陈佳亮,等,2014. 三轴应力下致密砂岩的裂纹发育特征与能量机制[J].岩石力学与工程学报,33(4):691-698. | |
赵红鹤,杨小林,高富强,等,2014. 不同含水率岩石试样制备方法探讨[J].洛阳理工学院学报(自然科学版),24(1):4-7. | |
周辉,李震,宋雨泽,等,2013.精确制备不同含水率岩石试样的化学热力学方法[J].岩土力学,34(2):311-315. | |
周子龙,熊成,蔡鑫,等,2018.单轴载荷下不同含水率砂岩力学和红外辐射特征[J].中南大学学报(自然科学版),49(5):1189-1196. |
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