青海共和盆地花岗岩高温热损伤力学特性试验研究

doi:10.13722/j.cnki.jrme.2019.0182

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1303 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要青海共和盆地花岗岩高温热损伤力学特性的研究，对于青海共和干热岩地热示范工程的顺利实施具有重要意义，可为干热岩钻井工程、人工热储的设计与施工提供有关岩石热损伤力学参数。采用宏观力学试验方法，结合显微CT扫描，对取自青海共和盆地的花岗岩热损伤的抗压强度、抗剪强度、抗拉强度，以及高温状态花岗岩试件自然冷却降温、裂隙生成进行研究。在试验测得高温热损伤花岗岩的抗压强度、弹性模量、抗剪强度、抗拉强度数据基础上，拟合获得抗压强度、弹性模量、抗拉强度、黏聚力、内摩擦角随温度变化的经验公式，建立热作用下花岗岩剪切破坏强度准则。同时揭示了温度对青海共和盆地花岗岩脆性–延性转变的影响，发现温度在500 ℃～600 ℃时，延性特征表现突出；降温速率与花岗岩的热破裂裂隙密度密切相关，花岗岩在空气中自然冷却过程中，前400 s降温速率最大，形成的温度梯度也最大，特别是前150 s，热破裂最剧烈。研究结果可为我国干热岩的开发与利用提供理论依据与技术支持，丰富和发展高温岩石力学理论。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	郤保平1
	2
	吴阳春1
	王帅1
	熊贵明1
	赵阳升1
	2

关键词 ：岩石力学, 干热岩, 热损伤, 力学性质, 降温速率

Abstract：The research on the mechanical properties of granite after high temperature thermal damage is of great significance for the successful implementation of dry hot rock geothermal demonstration project in Gonghe basin，Qinghai province，and it can provide mechanical parameters related to thermal damage of rock for the drilling project，artificial reservoir design and construction. Using macroscopic mechanical test method combined with the microscopic CT scanning，compressive strength，shear strength and tensile strength of granite from Gonghe basin，Qinghai province after high temperature thermal damage are studied，and the influence of natural cooling on crack formation of high temperature granite samples is also investigated. Through fitting the test data，empirical formulas of the compressive strength，elastic modulus，tensile strength，cohesion，internal friction angle with temperature are obtained，and a shear failure strength criterion of granite under thermo-mechanical coupling is established. The influence of the temperature on brittle-ductile transition of granite is discussed，and it is found that，at the temperature of 500 ℃ to 600 ℃，the ductility plays a dominant role. The cooling rate is closely related to the density of thermal fracture of granite. For the first 400 s of the natural cooling process of granite in the air，the cooling rate is the highest and the temperature gradient is the largest. Especially for the first 150s，the thermal crack is most severe. The research results can provide theoretical basis and technical support for the development and utilization of dry hot rock in China，and also enrich and develop the theory of high temperature rock mechanics.

Key words： rock mechanics dry hot rock thermal damage mechanical properties cooling rate

引用本文:

郤保平1，2，吴阳春1，王帅1，熊贵明1，赵阳升1，2. 青海共和盆地花岗岩高温热损伤力学特性试验研究[J]. 岩石力学与工程学报, 2020, 39(1): 69-83.
XI Baoping1，2，WU Yangchun1，WANG Shuai1，XIONG Guiming1，ZHAO Yangsheng1，2. Experimental study on mechanical properties of granite taken from Gonghe basin，Qinghai province after high temperature thermal damage#br#. , 2020, 39(1): 69-83.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2019.0182 或 http://www.rockmech.org/CN/Y2020/V39/I1/69

[19]	CHEN S，YANG C. Evolution of thermal damage and permeability of Beishan granite[J]. Applied Thermal Engineering，2017，110：1 533-1 542.
[8]	GE Z，SUN Q. Acoustic emission(AE) characteristics of granite after heating and cooling cycles[J]. Engineering Fracture Mechanics，2018，200：418-429.
[1]	许天福，张延军，曾昭发，等. 增强型地热系统(干热岩)开发技术进展[J]. 科技导报，2012，30(32)：42-45.(XU Tianfu，ZHANG Yanjun，ZENG Zhaofa，et al. Technology progress in an enhanced geothermal system(hot dry rock)[J]. Science and Technology Review，2012，30(32)：42-45.(in Chinese))
[4]	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，1991：128-133.(LIN Muzeng. Thermal physics of rock and its application[M]. Chongqing：Chongqing University Press，1991：128-133.(in Chinese))
[7]	孙强，张志镇，薛雷，等. 岩石高温相变与物理力学性质变化[J]. 岩石力学与工程学报，2013，32(5)：935-942.(SUN Qiang，ZHANG Zhizhen，XUE Lei，et al. Physico-mechanical properties variation of rock with phase transformation under high temperature[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(5)：935-942.(in Chinese))
[9]	ZHANG F，ZHAO J，HU D，et al. Laboratory investigation on physical and mechanical properties of granite after heating and water-cooling treatment[J]. Rock Mechanics and Rock Engineering，2018，51(3)：677-694.
[11]	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))
[14]	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))
[2]	许天福，胡子旭，李胜涛，等. 增强型地热系统：国际研究进展与我国研究现状[J]. 地质学报，2018，92(9)：1 936-1 947.(XU Tianfu，HU Zixu，LI Shengtao，et al. Enhanced geothermal system: international progresses and research status of China[J]. Acta Geologica Sinica，2018，92(9)：1 936-1 947.(in Chinese))
[12]	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))
[17]	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))
[21]	胡少华，章光，张淼，等. 热处理北山花岗岩变形特性试验与损伤力学分析[J]. 岩土力学，2016，37(12)：3 427-3 436.(HU Shaohua，ZHANG Guang，ZHANG Miao，et al. Deformation characteristics tests and damage mechanics analysis of Beishan granite after thermal treatment[J]. Rock and Soil Mechanics，2016，37(12)：3 427-3 436.(in Chinese))
[22]	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))
[24]	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.
[27]	郤保平，赵阳升. 高温高压下花岗岩中钻孔围岩的热物理及力学特性实验研究[J]. 岩石力学与工程学报，2010，29(6)：1 245-1 253. (XI Baoping，ZHAO Yangsheng. Experimental study of thermophysico- mechanical property of drilling surrounding rock in granite under high temperature and high pressure[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(6)：1 245-1 253.(in Chinese))
[29]	KUMARI W G P，RANJITH P G，PERERA M S A. Temperature- dependent mechanical behaviour of Australian Strathbogie granite with different cooling treatments[J]. Engineering Geology，2017，229：31-44.
[31]	KUMARI W G P，RANJITH P G，PERERA M S A，et al. Mechanical behaviour of Australian Strathbogie granite under in-situ stress and temperature conditions：An application to geothermalenergy extraction[J]. Geothermics，2017，65：44-59.
[32]	SHAO 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(9)：381-387.
[5]	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))
[10]	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))
[15]	徐小丽，高峰，张志镇. 高温后围压对花岗岩变形和强度特性的影响[J]. 岩土工程学报，2014，36(12)：2 246-2 252.(XU Xiaoli，GAO Feng，ZHANG Zhizhen. Influence of confining pressure on deformation and strength properties of granite after high temperatures[J]. Chinese Journal of Geotechnical Engineering，2014，36(12)：2 246-2 252.(in Chinese))
[18]	左建平，周宏伟，范雄，等. 三点弯曲下热处理北山花岗岩的断裂特性研究[J]. 岩石力学与工程学报，2013，32(12)：2 422-2 430. (ZUO Jianping，ZHOU Hongwei，FAN Xiong，et al. Research on fracture behavior of Beishan granite after heat treatment under three-point bending[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(12)：2 422-2 430.(in Chinese))
[20]	赵星光，马利科，苏锐，等. 北山深部花岗岩在压缩条件下的破裂演化与强度特性[J]. 岩石力学与工程学报，2014，33(增2)：3 665-3 675.(ZHAO Xingguang，MA Like，SU Rui，et al. Fracture evolution and strength characteristics of Beishan deep granite under compression conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(Supp.2)：3 665-3 675.(in Chinese))
[25]	赵阳升，孟巧荣，康天合，等. 显微CT 试验技术与花岗岩热破裂特征的细观研究[J]. 岩石力学与工程学报，2008，27(1)：28-34. (ZHAO Yangsheng，MENG Qiaorong，KANG Tianhe，et al. Micro-CT experimental technology and meso-investigation on thermal fracturing characteristics of granite[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(1)：28-34.(in Chinese))
[28]	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))
[35]	ULUSAY R. The ISRM suggested methods for rock characterization，testing and monitoring：2007-2014[M]. Switzerland：Springer International Publishing，2015：51-68.
[3]	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，2004：2-3.(ZHAO Yangsheng，WAN Zhijun，KANG Jianrong. An introduction to hot dry rock(HDR) geothermal exploitation[M]. Beijing：Science Press，2004：2-3.(in Chinese))
[6]	方新宇，许金余，刘石，等. 高温后花岗岩的劈裂试验及热损伤特性研究[J]. 岩石力学与工程报，2016，35(增1)：2 687-2 694. (FANG Xinyu，XU Jinyu，LIU Shi，et al. Research on splitting-tensile tests and thermal damage of granite under post-high temperature[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.1)：2 687-2 694.(in Chinese))
[13]	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))
[16]	张志镇，高峰，徐小丽. 花岗岩力学特性的温度效应试验研究[J].岩土力学，2011，32(8)：2 346-2 352.(ZHANG Zhizhen，GAO Feng，XU Xiaoli. Experimental study of temperature effect of mechanical properties of granite[J]. Rock and Soil Mechanics，2011，32(8)：2 346-2 352.(in Chinese))
[23]	ZHAO Y，FENG Z，ZHAO Y，et al. Experimental investigation on thermal cracking，permeability under HTHP and application for geothermal mining of HDR[J]. Energy，2017，132(15)：305-314.
[26]	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))
[30]	KUMARI W G P，RANJITH P G，PERERA M S A. Experimental investigation of quenching effect on mechanical，micro-structural and flow characteristics of reservoir rocks：Thermal stimulation method for geothermal energy extraction[J]. Journal of Petroleum Science and Engineering，2018，162：419-433.
[33]	KANT M A，AMMANN J，ROSSI E，et al. Thermal properties of Central Aare granite for temperatures up to 500 ℃：Irreversible changes due to thermal crack formation[J]. Geophysical Research Letters，2017，44(2)：771-776.
[36]	KIM K，KEMENY J，NICKERSON M. Effect of rapid thermal cooling on mechanical rock properties[J]. Rock Mechanics and Rock Engineering，2014，47(6)：2 005-2 019.
[38]	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))
[34]	张森琦，严维德，黎敦朋，等. 青海省共和县恰卜恰干热岩体地热地质特征[J]. 中国地质，2018，45(6)：1 087-1 102.(ZHANG Senqi，YAN Weide，LI Dunpeng，et al. Characteristics of geothermal geology of the Qiabuqia HDR in Gonghe Basin，Qinghai Province[J]. Geology in China，2018，45(6)：1 087-1 102.(in Chinese))
[37]	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))
[39]	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.