冻融环境下不同饱和度砂岩损伤演化特征研究

doi:10.13722/j.cnki.jrme.2021.0089

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Abstract In order to explore the damage evolution law of sandstone with different saturations under freeze-thaw environment，through freeze-thaw cycle，CT scanning and uniaxial compression test，and combined with three-dimensional visualization software and fractal theory，the evolution processes of porosity，permeability，pore parameters，throat parameters，fractal dimension and macroscopic mechanical indexes of natural water-bearing，incompletely saturated and completely saturated sandstone samples during the freeze-thaw process are quantitatively analyzed. The results show that the degree of freeze-thaw damage of rock samples is determined by the water saturation during freeze-thaw. Specifically，the damage deterioration of the completely saturated sandstone is the most severe while the damage degree of the natural water-bearing sandstone is the lowest. The meso-structure of the completely saturated sandstone is highly heterogeneous，and its porosity，permeability，pore parameters，throat parameters and fractal dimension all increase exponentially with increasing the freeze-thaw number. However，for the natural water-bearing sandstone and the incompletely saturated sandstone，these parameters increase linearly with increasing the freeze-thaw number. The porosity and the permeability of the samples are positively correlated with the fractal dimension，and freeze-thaw damage mainly presents in producing small pores and increasing the length of the original throat. The strength and the elastic modulus of three kinds of saturated sandstone samples decrease linearly with increasing the freeze-thaw number. After 150 freeze-thaw times，the strength of the completely saturated sandstone decreases by 98.53%，which is respectively 1.68 and 1.26 times higher than that of the natural water-bearing sandstone and the incompletely saturated sandstone. The macroscopic mechanical strength is negatively correlated with the porosity and the fractal dimension，and the meso-structure of rock is the key to affect the macroscopic mechanical properties. The initial freeze-thaw load damage variable is the freeze-thaw damage variable under the corresponding freeze-thaw number. The damage evolution curve has obvious stage characteristics，and the damage variable increases from concave to convex and then to gentle in the process of loading. The research results will provide a theoretical basis for the scientific evaluation of the long-term stability of rock mass engineering under the freeze-thaw environment in cold regions.

Key words： rock mechanics freeze-thaw cycle saturation CT reconstruction fractal dimension damage evolution

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	SONG Yongjun
	YANG Huimin
	TAN Hao
	REN Jianxi
	GUO Xixi

Cite this article:

SONG Yongjun,YANG Huimin,TAN Hao, et al. Study on damage evolution characteristics of sandstone with different saturations in freeze-thaw environment[J]. , 2021, 40(8): 1513-1524.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0089 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I8/1513

[1] PRICK A. Critical degree of saturation as a threshold moisture level in frost weathering of limestones[J]. Permafrost and Periglacial Processes，1997，8(1)：91–99.
[2] GHOBADI M H，BABAZADEH R. Experimental studies on the effects of cyclic freezing-thawing，salt crystallization，and thermal shock on the physical and mechanical characteristics of selected sandstones[J]. Rock Mechanics and Rock Engineering，2015，48(3)：1 001–1 016.
[3] FANG W，JIANG N，LUO X D. Establishment of damage statistical constitutive model of loaded rock and method for determining its parameters under freeze-thaw condition[J]. Cold Regions Science and Technology，2019，160：31–38.
[4] LIU Q S，HUANG S B，KANG Y S，et al. A prediction model for uniaxial compressive strength of deteriorated rocks due to freeze-thaw[J]. Cold Regions Science and Technology，2015，120：96–107.
[5] NIU Y，ZHOU X P，ZHANG J Z，et al. Experimental study on crack coalescence behavior of double unparallel fissure-contained sandstone specimens subjected to freeze-thaw cycles under uniaxial compression[J]. Cold Regions Science and Technology，2018，158：166–181.
[6] ZHANG J，DENG H W，TAHERI A，et al. Deterioration and strain energy development of sandstones under quasi-static and dynamic loading after freeze-thaw cycles[J]. Cold Regions Science and Technology，2019，160：252–264.
[7] CHEN T C，YEUNG M R，MORI N. Effect of water saturation on deterioration of welded tuff due to freeze-thaw action[J]. Cold Regions Science and Technology，2004，38(2/3)：127–136.
[8] KODAMA J，GOTO T，FUJII Y，et al. The effects of water content，temperature and loading rate on strength and failure process of frozen rocks[J]. International Journal of Rock Mechanics and Mining Sciences，2013，62：1–13.
[9] 方杰，姚强岭，王伟男，等. 含水率对泥质粉砂岩强度损伤及声发射特征影响的研究[J]. 煤炭学报，2018，43(增2)：412–419. (FANG Jie，YAO Qiangling，WANG Weinan，et al. Experimental study on damage characteristics of siltstone under water action[J]. Journal of China Coal Society，2018，43(Supp.2)：412–419.(in Chinese))
[10] 王鹏，许金余，方新宇，等. 红砂岩吸水软化及冻融循环力学特性劣化[J]. 岩土力学，2018，39(6)：2 065–2 072.(WANG Peng，XU Jinyu，FANG Xinyu，et al. Water softening and freeze-thaw cycling induced decay of red-sandstone[J]. Rock and Soil Mechanics，2018，39(6)：2 065–2 072.(in Chinese))
[11] 訾凡，杨更社，贾海梁. 饱和度对泥质粉砂岩冻结力学性质的影响[J]. 冰川冻土，2018，40(4)：748–755.(ZI Fan，YANG Gengshe，JIA Hailiang. Influence of saturation degree on the mechanical properties of frozen argillaceous siltstone[J]. Journal of Glaciology and Geocryology，2018，40(4)：748–755.(in Chinese))
[12] DEPREZ M，KOCK T D，SCHUTTER G D，et al. A review on freeze-thaw action and weathering of rocks[J]. Earth-Science Reviews，2020，203：103143.
[13] ZHANG L，ZHANG S，ZHANG C，et al. The characterization of bituminous coal microstructure and permeability by liquid nitrogen fracturing based on μCT technology[J]. Fuel，2020，262：116635.
[14] SUN Y，ZHAI C，XU J Z，et al. Characterization and evolution of the full size range of pores and fractures in rocks under freeze-thaw conditions using nuclear magnetic resonance and three-dimensional X-ray microscopy[J]. Engineering Geology，2020，271：105616.
[15] 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.
[16] LIU H，YANG G S，YUN Y H，et al. Investigation of sandstone mesostructure damage caused by freeze-thaw cycles via CT image enhancement technology[J]. Advances in Civil Engineering，2020. https://www.hindawi.com/journals/ace/2020/8875814/.
[17] 宋勇军，杨慧敏，张磊涛，等. 冻结红砂岩单轴损伤破坏CT实时试验研究[J]. 岩土力学，2019，40(增1)：152–160.(SONG Yongjun，YANG Huimin，ZHANG Leitao，et al. CT real-time monitoring on uniaxial damage of frozen red sandstone[J]. Rock and Soil Mechanics，2019，40(Supp.1)：152–160.(in Chinese))
[18] 张慧梅，王焕，张嘉凡，等. CT 尺度下冻融岩石细观损伤特性分析[J]. 辽宁工程技术大学学报：自然科学版，2020，39(1)：51–56. (ZHANG Huimei，WANG Huan，ZHANG Jiafan，et al. Analysis of meso-damage characteristics of freeze-thaw rock on CT scale[J]. Journal of Liaoning Technical University：Natural Science，2020，39(1)：51–56.(in Chinese))
[19] 王俐，杨春和. 不同初始饱水状态红砂岩冻融损伤差异性研究[J]. 岩土力学，2006，27(10)：1 772–1 776.(WANG Li，YANG Chunhe. Studies on different initial water-saturated red sandstones¢ different damaged extension under condition of frost and thaw[J]. Rock and Soil Mechanics，2006，27(10)：1 772–1 776.(in Chinese))
[20] DEPREZ M，DE KOCK T，DE SCHUTTER G，et al. The role of ink-bottle pores in freeze-thaw damage of oolithic limestone[J]. Construction and Building Materials，2020，246：118515.
[21] 王冬欣. 基于Micro-CT图像的数字岩心孔隙网络建模研究[硕士学位论文][D]. 吉林：吉林大学，2015.(WANG Dongxin. The research of digital core network extraction based on micro-CT images[M. S. Thesis][D]. Jilin：Jilin University，2015.(in Chinese))
[22] 王珂，盛金昌，郜会彩，等. 应力–渗流侵蚀耦合作用下粗糙裂隙渗流特性研究[J]. 岩土力学，2020，41(增1)：1–11.(WANG Ke，SHENG Jinchang，GAO Huicai，et al. Study on seepage characteristics of rough crack under coupling of stress-seepage erosion[J]. Rock and Soil Mechanics，2020，41(Supp.1)：1–11.(in Chinese))
[23] USMANI A，KANNAN G，NANDA A，et al. Jain Seepage behavior and grouting effects for large rock caverns[J]. International Journal of Geomechanics，2015，15(3)：1–7.
[24] WANG G，SHEN J N，LIU S M，et al. Three-dimensional modeling and analysis of macro-pore structure of coal using combined X-ray CT imaging and fractal theory[J]. International Journal of Rock Mechanics and Mining Sciences，2019，123：104082.
[25] YIN T B，LI Q，LI X B. Experimental investigation on mode I fracture characteristics of granite after cyclic heating and cooling treatments[J]. Engineering Fracture Mechanics，2019，222：106740.
[26] 丁自伟，李小菲，唐青豹，等. 砂岩颗粒孔隙分布分形特征与强度相关性研究[J]. 岩石力学与工程学报，2020，39(9)：1 787–1 796. (DING Ziwei，LI Xiaofei，TANG Qingbao，et al. Study on correlation between fractal characteristics of pore distribution and strength of sandstone particles[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(9)：1 787–1 796.(in Chinese))
[27] FENG S W，ZHOU Y，WANG Y. Experimental research on the dynamic mechanical properties and damage characteristics of lightweight foamed concrete under impact loading[J]. International Journal of Impact Engineering，2020，140：103558.
[28] 李果，张茹，徐晓炼，等. 三轴压缩煤岩三维裂隙CT图像重构及体分形维研究[J]. 岩土力学，2015，36(6)：1 633–1 642.(LI Guo，ZHANG Ru，XU Xiaolian，et al. CT image reconstruction of coal rock three-dimensional fractures and body fractal dimension under triaxial compression test[J]. Rock and Soil Mechanics，2015，36(6)：1 633–1 642.(in Chinese))
[29] 丁自伟，李小菲，唐青豹，等. 砂岩颗粒孔隙分布分形特征与强度相关性研究[J]. 岩石力学与工程学报，2020，39(9)：1 787–1 796. (DING Ziwei，LI Xiaofei，TANG Qingbao，et al. Study on correlation between fractal characteristics of pore distribution and strength of sandstone particles[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(9)：1 787–1 796.(in Chinese))
[30] ALFONSO I，BELTRAN A，ABATAL M，et al. Fractal dimension determination of rock pores by multi-scale analysis of images obtained using om，SEM and XCT[J]. Fractals，2018，26(5)：1850067.
[31] 吴志军，卢槐，翁磊，等. 基于核磁共振实时成像技术的裂隙砂岩渗流特性研究[J]. 岩石力学与工程学报：2021，40(2)：263–275.(WU Zhijun，LU Huai，WENG Lei，et al. Investigations on the seepage characteristics of fractured sandstone based on NMR real-time imaging[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(2)：263–275.(in Chinese))
[32] LIU P，JU Y，GAO F，et al. CT identification and fractal characterization of 3D propagation and distribution of hydro fracturing cracks in low-permeability heterogeneous rocks[J]. Journal of Geophysical Research Solid Earth，2018，123(3)：2 156–2 173.
[33] 周翠英，梁宁，刘镇. 红层软岩遇水作用的孔隙结构多重分形特征[J]. 工程地质学报，2020，28(1)：1–9.(ZHOU Cuiying，LIANG Ning，LIU Zhen. Multifractal characteristics of pore structure of red beds soft rock at different saturactions[J]. Journal of Engineering Geology，2020，28(1)：1–9.(in Chinese))
[34] 张慧梅，杨更社. 冻融与荷载耦合作用下岩石损伤模型的研究[J]. 岩石力学与工程学报，2010，29(3)：471–476.(ZHANG Huimei YANG Gengshe. Research on damage model of rock under coupling action of freeze-thaw and load[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(3)：471–476.(in Chinese))