低温诱发岩石破裂的理论与数值模拟研究

doi:10.13722/j.cnki.jrme.2018.0027

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Abstract Thermal cracking of rock induced by cryogenic liquid is widely observed in oil and gas exploitation，geothermal development and liquefied petroleum gas storage etc. To study the cryogenic fracturing，a theoretical solution of the temperature and stress distribution in a plate was derived with the thermo-elastic theory. The heat conduction characteristics and associated thermal stress evolution in the plate was theoretically studied with the derived theoretical formula. The effects of heat transfer coefficient on cooling rate and increasing rate of tensile stress were also analyzed. The results show that when the rock surface contacts with cold liquid，the temperature on the contact surface decreases rapidly at first，then slowly and finally the same as the environment temperature. The tensile stress rises sharply firstly and then decreases，and finally decreases to zero. In addition，the crack initiation，propagation process of cryogenic fracture in rock under thermal shock are numerically simulated. The effect of the heat convection coefficient on the evolution of temperature，stress distribution，the fracture mode and the number of fractures were analyzed. The numerical results indicate that increasing the heat convection coefficient not only raises the tensile stress on the contact surface between liquid and solid which results in rock easier to crack，but also raise the number of cracks which are helpful for enhancing the permeability of low permeability reservoirs.

Key words： rock mechanics cryogenic fracture rock fracture numerical simulation crack growth

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	TANG Shibin1
	2
	LUO Jiang1
	2
	TANG Chun?an1
	2

Cite this article:

TANG Shibin1,2,LUO Jiang1, et al. Theoretical and numerical study on the cryogenic fracturing in rock[J]. , 2018, 37(7): 1596-1607.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2018.0027 OR http://www.rockmech.org/EN/Y2018/V37/I7/1596

[1]	周克群，楚泽涵，张元中，等. 岩石热开裂与检测方法研究[J]. 岩石力学与工程学报，2000，19(4)：412-416.(ZHOU Kequn，CHU Zehan，ZHANG Yuanzhong，et al. Research of the detection method and thermal cracking of rock[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(4)：412-416.(in Chinese))
[2]	刘泉声，许锡昌. 温度作用下脆性岩石的损伤分析[J]. 岩石力学与工程学报，2000，19(4)：408-411.(LIU Quansheng，XU Xichang. Damage analysis of brittle rock at high temperature[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(4)：408-411.(in Chinese))
[3]	左建平，谢和平，周宏伟，等. 不同温度作用下砂岩热开裂的实验研究[J]. 地球物理学报，2007，50(4)：1 150-1 155.(ZUO Jianping，XIE Heping，ZHOU Hongwei，et al. Experimental research on thermal cracking of sandstone under different temperature[J]. Chinese Journal of Geophysics，2007，50(4)：1 150-1 155.(in Chinese))
[6]	唐世斌，唐春安，朱万成，等. 热应力作用下的岩石破裂过程分析[J]. 岩石力学与工程学报，2006，25(10)：2 071-2 078.(TANG Shibin，TANG Chun?an，ZHU Wancheng，et al. Numerical investigation on rock failure process induced by thermal stress[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(10)：2 017-2 078.(in Chinese))
[7]	TANG S B，TANG C A. Crack propagation and coalescence in quasi-brittle materials at high temperatures[J]. Engineering Fracture Mechanics，2015，134：404-432.
[8]	ENAYATPOUR S，VAN OORT E，PATZEK T. Freeze frac improves the productivity of gas shales[C]// SPE Annual Technical Conference and Exhibition. New Orleans，Louisiana，USA：[s. n.]，2013：1-17.
[10]	BA?ANT Z P，OHTSUBO H，AOH K. Stability and post-critical growth of a system of cooling or shrinkage cracks[J]. International Journal of Fracture，1979，15(5)：443-456.
[17]	TANG S B，ZHANG H，TANG C A，et al. Numerical model for the cracking behavior of heterogeneous brittle solids subjected to thermal shock[J]. International Journal of Solid sand Structures，2016，80:520-531.
[4]	赵阳升，万志军，张渊，等. 岩石热破裂与渗透性相关规律的试验研究[J]. 岩石力学与工程学报，2010，29(10)：1 970-1 976. (ZHAO Yangsheng，WAN Zhijun，ZHANG Yuan，et al. Experimental study of related laws of rock thermal cracking and permeability[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(10)：1 970-1 976.(in Chinese))
[14]	ZHANG C，WANG L，DU J，et al. Numerical modelling rock deformation subjected to nitrogen cooling to study permeability evolution[J]. International Journal of Coal Science and Technology，2015，2(4)：293-298.
[5]	刘向君，高涵，梁利喜. 温度围压对低渗透砂岩孔隙度和渗透率的影响研究[J]. 岩石力学与工程学报，2011，30(增2)：3 771-3 778. (LIU Xiangjun，GAO Han，LIANG Lixi. Study of temperature and confining pressure effects on porosity and permeability in low permeability sandstone[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.2)：3 771-3 778.(in Chinese))
[15]	TRAN D，SETTARI A，NGHIEM L. Initiation and propagation of secondary cracks in thermo-poroelastic media[C]// The 46th US Rock Mechanics/Geomechanics Symposium. American Rock Mechanics Association. Chicago，I L，USA：[s. n.]，2012：12-252.
[9]	CHA M，YIN X，KNEAFSEY T，et al. Cryogenic fracturing for reservoir stimulation—laboratory studies[J]. Journal of Petroleum Science and Engineering，2014，124：436-450.
[11]	任韶然，范志坤，张亮，等. 液氮对煤岩的冷冲击作用机制及试验研究[J]. 岩石力学与工程学报，2013，32(增2)：3 790-3 794. (REN Shaoran，FAN Zhikun，ZHANG Liang，et al. Mechanics and experimental study of thermal-shock effect on coal-rock using liquid nitrogen[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：3 790-3 794.(in Chinese))
[12]	蔡承政，李根生，黄中伟，等. 液氮冻结条件下岩石孔隙结构损伤试验研究[J]. 岩土力学，2014，35(4)：965-971.(CAI Chengzheng，LI Gensheng，HUANG Zhongwei，et al. Experiment study of rock porous structure damage under cryogenic nitrogen freezing[J]. Rock and Soil Mechanics，2014，35(4)：965-971.(in Chinese))
[13]	杨兆中，张云鹏，贾敏，等. 低温对煤岩渗透性影响试验研究[J]. 岩土力学，2017，38(2)：354-360.(YANG Zhaozhong，ZHANG Yunpeng，JIA Min，et al. Experimental research on influence of low temperature on coal permeability[J]. Rock and Soil Mechanics，2017，38(2)：354-360.(in Chinese))
[16]	TARASOVS S，GHASSEMI A. Propagation of a system of cracks under thermal stress[C]// The 45th US Rock Mechanics/Geomechanics Symposium. San Francisco，CA，USA：American Rock Mechanics Association，2011：11-558.