饱水红砂岩裂隙冻胀力与变形试验研究

doi:10.13722/j.cnki.jrme.2021.0117

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Abstract Alpine and high altitude areas are affected by freeze-thaw cycles throughout the year，and frost heaves in fractured rock masses are widespread. In order to explore the evolution law of frost heaving force in fracture frost heaving deformation and reveal the frost heave damage mechanism of fractured rock，using the test system of distributed pressure film sensor，temperature sensor and strain gauge to fully monitor the freeze-thaw process of saturated cracked red sandstone samples with different crack widths in real time，then the curves of crack frost heave force，temperature and crack strain with time were obtained. The experimental results show that during the freezing and thawing process，a constant temperature platform appears at 20 mm in the water saturated red sandstone fracture， indicating that the fracture water is freezing，and the larger the fracture width is，the earlier the constant temperature platform appears；The strain of rock surface is synchronous with the inflection point of temperature，the inflection point of fracture strain lags behind the inflection point of temperature，but the change of fracture strain is synchronous with the change of maximum frost heaving force；When the constant temperature platform appears，the strain of rock surface rises rapidly，mainly caused by the joint action of the shrinkage of the rock skeleton and the frost heaving of the rock pore water；The change of temperature on the rock surface is faster than that in the fracture，which leads to the lag of frost heaving of fracture water；During the thawing process，the frost heaving force and strain both climb again，and appear the secondary peak；For cracks with a width of 2–4 mm，the maximum frost heaving force increases with the increase of crack width；In the whole process of freezing and thawing，the distribution of frost heaving force is irregular，the frost heaving force increases from the four sides to the inside，and the frost heaving force around basically remains unchanged；The analysis of freeze-thaw mechanism shows that：a frozen layer is first formed around the rock mass，and then the fracture water freezes and gradually forms an ice plug. When the ice plug no longer slips and reaches a completely closed state，the fracture strain rises rapidly，the frost heaving force rises to the maximum，and the stress concentration at the fracture tip leads to microcracks. During melting，the surface of the rock melts and secondary frost heaving occurs in the fracture. and secondary frost heaving occurs in the fracture. The test preliminarily analyzes the freezing law of pore water and crack water in the fractured rock mass，which provides the basis for reasonably analyzing the frost heaving damage mechanism of fractured rock.

Key words： rock mechanics fractured rock mass frost heaving force frost heave deformation frost heave damage mechanism

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	Articles by authors
	TIAN Zhen1
	LI Yinping2
	WANG Guibin2
	MA Hongling2
	ZHANG Junyue1
	BI Zhenhui1

Cite this article:

TIAN Zhen1,LI Yinping2,WANG Guibin2, et al. Experimental study on frost heaving force and deformation of water saturated red sandstone fractures[J]. , 2022, 41(S1): 2857-2868.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0117 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/IS1/2857

[1]	徐祖. 中国冻胀研究进展[J]. 地球科学进展，1994，9(5)：13-19.(XU Zu. Research progress of frost heave in China[J]. Advances in Earth Science，1994，9(5)：13-19.(in Chinese))
[2]	齐吉琳，马巍. 冻土的力学性质及研究现状[J]. 岩土力学，2010，21(1)：133-143.(QI Jilin，MA Wei. Mechanical properties and research status of frozen soil[J]. Rock and Soil Mechanics，2010，21(1)：133-143.(in Chinese))
[3]	MATSUOKA N. The rate of bedrock weathering by frost action：Field measurements and a predictive model[J]. Earth Surface Processes and Landforms，2010，15(1)：73-90.
[4]	李杰林，周科平，张亚民，等. 基于核磁共振技术的岩石孔隙结构冻融损伤试验研究[J]. 岩石力学与工程学报，2012，31(6)：1 208-1 214.(LI Jielin，ZHOU Keping，ZHANG Yamin，et al. Experimental study on freeze-thaw damage of rock pore structure based on nuclear magnetic resonance technology[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(6)：1 208-1 214.(in Chinese))
[5]	刘慧，杨更社，任建喜. 基于数字图像处理的冻融页岩温度场的数值分析方法[J]. 岩石力学与工程学报，2007，26(8)：1 678- 1 683.(LIU Hui，YANG Gengshe，REN Jianxi. Numerical analysis method of temperature field of freeze-thaw shale based on digital image processing[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(8)：1 678-1 683.(in Chinese))
[6]	奚家米. 低温冻结作用下砂质泥岩基本力学特性试验研究[J]. 煤炭学报，2014，39(7)：1 262-1 268.(XI Jiami. Experimental study on basic mechanical properties of sandy mudstone under low temperature freezing[J]. Journal of China Coal Society，2014，39(7)：1 262-1 268. (in Chinese))
[7]	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))
[8]	贾海梁，刘清秉，项伟，等. 冻融循环作用下饱和砂岩损伤扩展模型研究[J]. 岩石力学与工程学报，2013，32(增2)：3 049-3 055. (JIA Hailiang，LIU Qingbing，XIANG Wei，et al. Research on damage propagation model of saturated sandstone under freeze-thaw cycles[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：3 049-3 055.(in Chinese))
[9]	刘泉声，黄诗冰，康永水，等. 裂隙岩体冻融损伤研究进展与思考[J]. 岩石力学与工程学报，2015，34(3)：452-471.(LIU Quansheng，HUANG Shibing，KANG Yongshui，et al. Research progress and thinking on freeze-thaw damage of fractured rock masses[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(3)：452-471.(in Chinese))
[10]	刘泉声，黄诗冰，康永水，等. 低温冻结岩体单裂隙冻胀力与数值计算研究[J]. 岩土工程学报，2015，37(9)：1 572-1 580.(LIU Quansheng，HUANG Shibing，KANG Yongshui，et al. Research on frost heave force and numerical calculation of single fracture in low-temperature freezing rock mass[J]. Chinese Journal of Geotechnical Engineering，2015，37(9)：1 572-1 580.(in Chinese))
[11]	刘泉声，黄诗冰，康永水，等. 裂隙岩体冻融损伤关键问题及研究状况[J]. 岩土力学，2012，33(4)：971-978.(LIU Quansheng，HUANG Shibing，KANG Yongshui，et al. The key issues and research status of freeze-thaw damage of fractured rock masses[J]. Rock and Soil Mechanics，2012，33(4)：971-978.(in Chinese))
[12]	刘泉声，黄诗冰，康永水，等. 裂隙冻胀压力及对岩体造成的劣化机制初步研究[J].岩土力学，2016，37(6)：1 530-1 541.(LIU Quansheng，HUANG Shibing，KANG Yongshui，et al. Preliminary study on fracture frost heave pressure and its degradation mechanism on rock mass[J]. Rock and Soil Mechanics，2016，37(6)：1 530-1 541.(in Chinese))
[13]	黄诗冰，刘泉声，程爱平，等. 低温岩体裂隙冻胀力与冻胀扩展试验初探[J]. 岩土力学，2012，33(4)：971-978.(HUANG Shibing，LIU Quansheng，CHENG Aiping，et al. Experimental study on frost heave force and frost heave propagation of low-temperature rock mass fissures[J]. Rock and Soil Mechanics，2012，33(4)：971-978.(in Chinese))
[14]	单仁亮，白瑶，孙鹏飞，等. 裂隙红砂岩冻胀力特性试验研究[J]. 煤炭学报，2019，44(6)：1 742-1 752.(SHAN Renliang，BAI Yao，SUN Pengfei，et al. Experimental study on frost heave characteristics of fractured red sandstone[J]. Journal of China Coal Society，2019，44(6)：1 742-1 752.(in Chinese))
[15]	杨昊，张晋勋，单仁亮，等. 冻结饱水单裂隙岩体力学特性试验研究[J]. 岩土力学，2018，39(4)：1 245-1 255.(YANG Hao，ZHANG Jinxun，SHAN Renliang，et al. Experimental study on mechanical characteristics of frozen and saturated single-fractured rock mass[J]. Rock and Soil Mechanics，2018，39(4)：1 245-1 255.(in Chinese))
[16]	裴向军，蒙明辉，袁进科，等. 干燥及饱水状态下裂隙岩石冻融特征研究[J]. 岩土力学，2017，38(7)：1 999-2 006.(PEI Xiangjun，MENG Minghui，YUAN Jinke，et al. Research on freeze-thaw characteristics of fractured rocks in dry and saturated state[J]. Rock and Soil Mechanics，2017，38(7)：1 999-2 006.(in Chinese))
[17]	夏才初，黄继辉，韩常领，等. 寒区隧道岩体冻胀率的取值方法和冻胀敏感性分级[J]. 岩石力学与工程学报，2013，32(9)：1 876-1 885. (XIA Caichu，HUANG Jihui，HAN Changling，et al. The method of determining the frost heave rate and the classification of frost heave sensitivity of tunnel rock mass in cold regions[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(9)：1 876-1 885.(in Chinese))
[18]	LV Z T，XIA C C，WANG Y S，et al. Frost heave and freezing processes of saturated rock with an open crack under different freezing conditions[J]. Frontiers of Structural and Civil Engineering，2020，14(4)：947-960.
[19]	夏才初，李强，吕志涛，等. 各向均匀与单向冻结条件下饱和岩石冻胀变形特性对比试验研究[J]. 岩石力学与工程学，2018，37(2)：274-281.(XIA Caichu，LI Qiang，LV Zhitao，et al. Comparative experimental study on frost heave and deformation characteristics of saturated rock under uniform and unidirectional freezing conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(2)：274-281.(in Chinese))
[20]	夏才初，王岳嵩，吕志涛，等. 单向冻结条件下裂隙岩体冻胀特性试验[J]. 同济大学学报：自然科学版，2019，47(9)：1 268-1 276. (XIA Caichu，WANG Yuesong，LV Zhitao，et al. Experiment on frost heave characteristics of fractured rock mass under unidirectional freezing conditions[J]. Journal of Tongji University：Natural Science，2019，47(9)：1 268-1 276.(in Chinese))
[21]	阎锡东，刘红岩，邢闯锋，等基于微裂隙变形与扩展的岩石冻融损伤本构模型研究[J]. 岩土力学，2015，36(12)：3 489-3 499.(YAN Xidong，LIU Hongyan，XING Chuangfeng，et al. Research on constitutive model of rock freeze-thaw damage based on deformation and propagation of micro-cracks[J]. Rock and Soil Mechanics，2015，36(12)：3 489-3 499.(in Chinese))
[22]	张君岳，田镇，刘桓兑，等. 冻融红砂岩物理力学性质损伤演化试验研究[J]. 矿业研究与开发，2020，40(10)：79-84.(ZHANG Junyue，TIAN Zhen，LIU Huandui，et al. Experimental study on damage evolution of physical and mechanical properties of freeze-thaw red sandstone[J]. Mining Research and Development，2020，40(10)：79-84.(in Chinese))
[23]	THARP T M. Conditions for crack propagation by frost wedging[J]. Geological Society of America Bulletin，1987，99(1)：94-102.
[24]	DAVIDSON G P，NYE J F. A photoelastic study of ice pressure in rock cracks[J]. Cold Regions Science and Technology，1985，11(2)：141-153.
[25]	MATSUOKA N. Mechanisms of rock breakdown by frost action：An experimental approach[J]. Cold Regions Science and Technology，1990，17(3)：253-270.
[26]	BRIDGMAN P W. Water，in the liquid and five solid forms，under pressure[C]// Proceedings of the American Academy of Arts and Sciences. [S. l.]：American Academy of Arts and Sciences，1912：441-558.
[27]	WINKLER E M. Frost damage to stone and concrete：geological considerations[J]. Engineering Geology，1968，2(5)：315-323.
[28]	徐拴海，李宁，许刚刚，等. 冻融环境中饱和岩石的热量传递与温度平衡规律[J]. 岩石力学与工程学报，2016，35(11)：2 225-2 236. (XU Shuanhai，LI Ning，XU Ganggang，et al. Heat transfer and temperature balance of saturated rocks in freezing and thawing environment[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(11)：2 225-2 236.(in Chinese))
[29]	沈维道. 雅氏工程热力学(下册)[M]. 北京：中国工业出版社，1961：30-37.(SHEN Weidao. Jacques Engineering Thermodynamics(Volume 2)[M]. Beijing：China Industry Press，1961：30-37.(in Chinese))
[30]	JIA H L，KERRY LEITH，MICHAEL KRAUTBLATTER. Path-dependent frost-wedging experiments in fractured，low-permeability granite[J]. Permafrost and Periglacial Processes，2017，28(4)：698-709.
[31]	贾海梁. 多孔岩石及裂隙岩体冻融损伤机制的理论模型和试验研究[博士学位论文][D]. 武汉：中国地质大学，2016.(JIA Hailiang. Theoretical model and experimental research on freeze-thaw damage mechanism of porous rock and fractured rock mass[Ph. D. Thesis][D]. Wuhan：China University of Geosciences，2016.(in Chinese))