热冲击作用下花岗岩宏观力学参量与热冲击速度相关规律试验研究

doi:10.13722/j.cnki.jrme.2019.0230

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摘要热冲击作用下花岗岩的宏观力学特性与热冲击速度密切相关。采用自主研制的岩石热冲击破裂试验台，结合力学强度破坏试验，对热冲击作用下花岗岩的宏观力学参量与热冲击速度相关规律进行试验研究。得到以下结论：(1) 热冲击作用下花岗岩内传热规律具有显著的非定常传热特征，表面温度、瞬时热冲击速度、平均热冲击速度呈现明显的三阶段：前20 s为急剧降温阶段，20～150 s为缓慢降温阶段，150 s以后为温度恒定阶段。(2) 热冲击速度在热冲击的前20 s对于花岗岩的宏观力学参量具有决定作用，此阶段花岗岩热冲击破裂最剧烈。(3) 获得了抗压强度、抗拉强度、黏聚力、内摩擦角与热冲击速度的定量计算公式。(4) 提出可以表征热冲击破坏能力的物理量—热冲击因子，可对热的破坏能力做进一步定量划分，丰富和发展高温岩石力学破坏理论。

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	郤保平1
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	吴阳春1
	赵阳升1
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关键词 ：岩石力学, 热冲击, 宏观力学参量, 热冲击速度, 热冲击因子

Abstract：The macroscopic mechanical properties of granite under thermal shock are closely related to the thermal shock velocity. Mechanical strength failure tests were conducted by using self-developed rock thermal shock cracking test bench，and the relationship between macroscopic mechanical parameters of granite and the thermal shock velocity under thermal shock was investigated. The results show that granite under thermal shock presents significant characteristics of unsteady heat transfer，and that the surface temperature，instantaneous thermal shock velocity and average thermal shock velocity present three distinct stages including rapid cooling for the first 20 s，slow cooling from 20–150 s and constant temperature after 150 s. At the first stage，the thermal shock velocity has a decisive effect on the macro mechanical parameters of granite and the thermal shock failure of granite is the most severe. The quantitative calculation formulas of compressive strength，tensile strength，cohesion，internal friction angle and thermal shock velocity were obtained，and a thermal shock factor representing thermal shock failure capability was proposed to further quantitatively classify thermal shock failure capability. The research work can enrich and develop the failure theory of high-temperature rock mechanics.

Key words： rock mechanics thermal shock macroscopic mechanical parameters thermal shock velocity thermal shock factor

引用本文:

郤保平1，2，吴阳春1，赵阳升1，2. 热冲击作用下花岗岩宏观力学参量与热冲击速度相关规律试验研究[J]. 岩石力学与工程学报, 2019, 38(11): 2194-2207.
XI Baoping1，2，WU Yangchun1，ZHAO Yangsheng1，2. Experimental study on the relationship between macroscopic mechanical parameters of granite and thermal shock velocity under thermal shock. , 2019, 38(11): 2194-2207.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2019.0230 或 http://www.rockmech.org/CN/Y2019/V38/I11/2194

[5]	徐小丽，高峰，高亚楠，等. 高温后花岗岩力学性质变化及结构效应研究[J]. 中国矿业大学学报，2008，37(3)：402-406.(XU Xiaoli，GAO Feng，GAO Yanan，et al. Effect of high temperatures on the mechanical characteristics and crystal structure of granite[J]. Journal of China University of Mining and Technology，2008，37(3)：402-406.(in Chinese))
[8]	许锡昌，刘泉声. 高温下花岗岩基本力学性质初步研究[J]. 岩土工程学报，2000，22(3)：332-335.(XU Xichang，LIU Quansheng. A preliminary study on basic mechanical properties for granite at high temperature[J]. Chinese Journal of Geotechnical Engineering，2000，22(3)：332-335.(in Chinese))
[9]	万志军，赵阳升，董付科，等. 高温及三轴应力下花岗岩体力学特性的实验研究[J]. 岩石力学与工程学报，2008，27(1)：72-77.(WAN Zhijun，ZHAO Yangsheng，DONG Fuke，et al. Experimental study of mechanical characteristics of granite under high temperatures and triaxial stresses[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(1)：72-77.(in Chinese))
[11]	郤保平，赵阳升. 600 ℃内高温状态花岗岩遇水冷却后力学特性试验研究[J]. 岩石力学与工程学报，2010，29(5)：892-898.(XI Baoping，ZHAO Yangsheng. Experimental research on mechanical properties of water-cooled granite under high temperatures within 600℃[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(5)：892-898.(in Chinese))
[13]	靳佩桦，胡耀青，邵继喜，等. 急剧冷却后花岗岩物理力学及渗透性质试验研究[J]. 岩石力学与工程学报，2018，37(11)：2 556- 2 564.(JIN Peihua，HU Yaoqing，SHAO Jixi，et al. Experimental study on physico-mechanical and transport properties of granite subjected to rapid cooling[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(11)：2 556-2 564.(in Chinese))
[15]	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. Mechanisms 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))
[17]	徐松林，席道瑛，唐志平，等. 岩石热冲击研究初探[J]. 岩石力学与工程学报，2007，26(增1)：3 468-3 472.(XU Songlin，XI Daoying，TANG Zhiping，et al. A preliminary investigation of rock subjected to thermal shock[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：3 468-3 472.(in Chinese))
[18]	KUMARI W G P，RANJITH P G，PERERA M S A，et al. Experimental investigation of quenching effect on mechanical，microstructural and flow characteristics of reservoir rocks：Thermal stimulation method for geothermal energy extraction[J]. Journal of Petroleum Science and Engineering，2018，162：419-433.
[19]	SHAO S S，WASANTHA P L P，RANJITH P G，et al. Effect of cooling rate on the mechanical behavior of heated Strathbogie granite with different grain sizes[J]. International Journal of Rock Mechanics and Mining Sciences，2014，70：381-387.
[2]	赵阳升，万志军，康建荣. 高温岩体地热开发导论[M]. 北京：科学出版社，2004：68-106.(ZHAO Yangsheng，WAN Zhijun，KANG Jianrong. An introduction to hot dry rock(HDR) geothermal exploitation[M]. Beijing：Science Press，2004：68-106.(in Chinese))
[12]	朱振南，田红，董楠楠，等. 高温花岗岩遇水冷却后物理力学特性试验研究[J]. 岩土力学，2018，39(增2)：169-176.(ZHU Zhennan，TIAN Hong，DONG Nannan，et al. Experimental study of physico- mechanical properties of heat-treated granite by water cooling[J]. Rock and Soil Mechanics，2018，39(Supp.2)：169-176.(in Chinese))
[21]	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)：2 071-2 078.(in Chinese))
[22]	CHEN L M，WANG A Z，SUO X B，et al. Effect of surface heat transfer coefficient gradient on thermal shock failure of ceramic materials under rapid cooling condition[J]. Ceramics International，2018，70：381-387.
[25]	QIAN D D，ZHANG L，ZHANG Y，et al. Impact of thermal shock cycles on mechanical properties and microstructure of lithium disilicate dental glass-ceramic[J]. Ceramics International，2018，44：1 589-1 593.
[27]	康健. 岩石热破裂的研究及应用[M]. 大连：大连理工大学出版社，2008：1-8.(KANG Jian. Research on thermal cracking of rocks and its application[M]. Dalian：Dalian University of Technology Press，2008：1-8.(in Chinese))
[6]	左建平，周宏伟，方园，等. 甘肃北山地区深部花岗岩的热开裂试验研究[J]. 岩石力学与工程学报，2011，30(6)：1 107-1 115. (ZUO Jianping，ZHOU Hongwei，FANG Yuan，et al. Experimental research on thermal cracking of deep granite in Beishan region，Gansu province[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(6)：1 107-1 115.(in Chinese))
[10]	ZHAO Y S，WAN Z J，FENG Z J，et al. Evolution of mechanical properties of granite at high temperature and high pressure[J]. Geomechanics and Geophysics for Geo-energy and Geo-resources，2017，3(2)：199-210.
[16]	ZHAI C，QIN L，LIU S，et al. Pore structure in coal：pore evolution after cryogenic freezing with cyclic liquid nitrogen injection and its implication on coalbed methane extraction[J]. Energy and Fuels，2016，30(7)：6 009-6 020.
[20]	唐世斌，罗江，唐春安. 低温诱发岩石破裂的理论与数值模拟研究[J]. 岩石力学与工程学报，2018，37(7)：1 596-1 607.(TANG Shibin，LUO Jiang，TANG Chun′an. Theoretical and numerical study on the cryogenic fracturing in rock[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(7)：1 596-1 607.(in Chinese))
[26]	LIDMAN W G，BOBROWSKY A R. Correlation of physical properties of ceramic materials with resistance to fracture by thermal shock[C]// Proceedings of the National Advisory Committee for Aeronautics，NACA research memorandum and Lewis Flight Propulsion Laboratory. Washington，D.C.：National Advisory Committee for Aeronautics，1949：1-15.
[4]	朱合华，闫治国，邓涛，等. 3种岩石高温后力学性质的试验研究[J]. 岩石力学与工程学报，2006，25(10)：1 945-1 960.(ZHU Hehua，YAN Zhiguo，DENG Tao，et al. Testing study of mechanical properties of tuff，granite and breccia after high temperatures[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(10)：1 945-1 960.(in Chinese))
[14]	王登科，张平，浦海，等. 温度冲击下煤体裂隙结构演化的显微CT实验研究[J]. 岩石力学与工程学报，2018，37(10)：2 243-2 252.(WANG Dengke，ZHANG Ping，PU Hai，et al. Experimental research on cracking process of coal under temperature variation with industrial micro-CT[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(10)：2 243-2 252.(in Chinese))
[24]	WANG A Z，HU P，FANG C，et al. Evaluations of cooling rate and initial temperature on thermal shock behavior of ZrB2-SiC ceramic[J]. Journal of Alloys and Compounds，2018，741：509-513.
[23]	FORABOSCHI P. Analytical modeling to predict thermal shock failure and maximum temperature gradients of a glass panel[J]. Materials and Design，2017，134：301-319.
[7]	CHEN S W，YANG C H，WANG G B. Evolution of thermal damage and permeability of Beishan granite[J]. Applied Thermal Engineering，2017，110：1 533-1 542.
[1]	林睦曾. 岩石热物理学及其工程应用[M]. 重庆：重庆大学出版社，1991：142-145.(LIN Muzeng. Thermal physics of rock and its application[M]. Chongqing：Chongqing University Press，1991：142-145.(in Chinese))
[3]	杜守继，刘华，职洪涛，等. 高温后花岗岩力学性能的试验研究[J]. 岩石力学与工程学报，2004，23(14)：2 359-2 364.(DU Shouji，LIU Hua，ZHI Hongtao，et al. Testing study of mechanical properties of post-high-temperature granite[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(14)：2 359-2 364.(in Chinese))