岩石热破裂与渗透性相关规律的试验研究

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摘要岩石热破裂是一类极为普遍的自然与工程现象。利用“600 ℃ 20 MN伺服控制高温高压岩体三轴试验机系统”进行砂岩和花岗岩在常温至600℃范围内的声发射特征和渗透性演化规律的试验研究，揭示岩石的热破裂规律与渗透性的相关特征，其结果如下：(1) 花岗岩和砂岩受热作用，在常温到600 ℃区间，其热破裂存在一个清晰的门槛值。从声发射特征来看，永城细砂岩与鲁灰花岗岩的热破裂门槛值分别为170 ℃和65 ℃。(2) 岩石热破裂门槛值之后，随温度升高，热破裂呈间断性与多期性变化特征，从常温到600 ℃，既非单调增加，也非单调减少，一般存在2个以上的峰值区间。(3) 随着温度的升高，伴随岩石峰值破裂段的发生，岩石的渗透率也呈现出同步的多个峰值段，伴随着声发射平静期滞后出现渗透率相对降低区，但渗透率仍然维持在一个较高水平，而且随着声发射剧烈期出现次数的增加，渗透率愈来愈大。

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关键词 ：岩石力学, 花岗岩, 砂岩, 热破裂, 声发射, 渗透性

Abstract：Thermal cracking of rock is a very common natural phenomenon in engineering. The experiments on acoustic emission(AE) characteristics and permeability evolution of sandstone and granite were carried out at temperature ranging from room temperature(RT) to 600 ℃ by using 600 ℃ 20 MN servo-controlled rock triaxial testing machine with high temperature and high pressure (HTHP)；and it reveals the related features between thermal cracking law and induced permeability. The results show as follows：(1) There exists a thermal-cracking threshold value in the heating process from RT to 600 ℃ as a result of thermal effect. According to AE characteristics induced by rock thermal cracking，the cracking threshold temperature of granite from Pingyi，Shandong Province in China is 65 ℃ and the one of fine-grained sandstone from Yongcheng，Henan Province in China is 170 ℃，respectively. (2) The behavior of rock thermal cracking is discontinuity and multi-period from RT to 600 ℃ with temperature rising over the threshold temperature. It neither increases nor reduces monotonously in the heating process；and there exist more than two peak value areas. (3) The rock permeability appears multi-peak value area because of the multi-period of thermal cracking with temperature increasing. The relative lowering permeability lag occurs after the quietude of AE in the peak value area of permeability. But the permeability remains in a high level and it is more and more high with the increasing happening times of AE drastic period.

Key words： rock mechanics granite sandstone thermal cracking acoustic emission(AE) permeability

收稿日期: 2010-04-01

引用本文:

赵阳升1，万志军2，张渊3，张宁1，冯子军1，董付科4，武晋文1，曲方5. 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): 1970-1976.
ZHAO Yangsheng1，WAN Zhijun2，ZHANG Yuan3，ZHANG Ning1，FENG Zijun1，. EXPERIMENTAL STUDY OF RELATED LAWS OF ROCK THERMAL CRACKING AND PERMEABILITY. , 2010, 29(10): 1970-1976.

链接本文:

http://www.rockmech.org/CN/Y2010/V29/I10/1970

[3]	SOMERTON W H，GUPTA V S. Role of fluxing agents in thermal alteration of sandstone[J]. Journal of Petroleum Technology，1965，17(5)：585-588. " target="_blank">
[10]	李纪汉，刘晓红，郝晋昇. 温度对岩石的弹性波速和声发射的影响[J]. 地震学报，1986，8(3)：293-300.(LI Jihan，LIU Xiaohong，HAO Jinsheng. Temperature effect on the elastic wave velocity and acoustic emission of rocks samples[J]. Acta Seismologica Sinica，1986，8(3)：293-300.(in Chinese)) " target="_blank">
[12]	张渊，赵阳升，万志军，等. 不同温度条件下孔隙压力对长石细砂岩渗透率影响试验研究[J]. 岩石力学与工程学报，2008，27(1)：53-58.(ZHANG Yuan，ZHAO Yangsheng，WAN Zhijun，et al. Experimental study on effect of pore pressure on feldspar fine sandstone permeability under different temperatures[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(1)：53-58.(in Chinese))
[14]	张宁，赵阳升，万志军，等. 三维应力下热破裂对花岗岩渗流规律影响的试验研究[J]. 岩石力学与工程学报，2010，29(1)：118-123.(ZHANG Ning，ZHAO Yangsheng，WAN Zhijun，et al. Experimental research on seepage laws of granite under thermal cracking action with 3D stress[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(1)：118-123.(in Chinese))
[17]	WANG H F，BONNER B P，CARLSON S R，et al. Thermal stress cracking in granite[J]. Journal of Geophysical Research，1989，94(B2)：1 745-1 758. " target="_blank">
[2]	康志勤，赵阳升，孟巧荣，等. 油页岩热破裂规律的显微CT试验研究[J]. 地球物理学报，2009，52(3)：842-848.(KANG Zhiqin，ZHAO Yangsheng，MENG Qiaorong，et al. Micro-CT experimental research on oil shale thermal cracking laws[J]. Chinese Journal of Geophysics，2009，52(3)：842-848.(in Chinese))
[8]	陈顒，吴晓东，张福勤. 岩石热开裂的试验研究[J]. 科学通报，1999，44(8)：880-883.(CHEN Yong，WU Xiaodong，ZHANG Fuqin. Experimental research on rock thermal cracking[J]. Chinese Science Bulletin，1999，44(8)：880-883.(in Chinese))
[1]	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.(ZHAO Yangsheng，WAN Zhijun，KANG Jianrong. Introduction to geothermal extraction of hot dry rock[M]. Beijing：Science Press，2004.(in Chinese)) " target="_blank">
[15]	赵阳升，万志军，张渊，等. 20 MN伺服控制高温高压岩体三轴试验机的研制[J]. 岩石力学与工程学报，2008，27(1)：1-8.(ZHAO Yangsheng，WAN Zhijun，ZHANG Yuan，et al. Research and development of 20 MN servo-controlled rock triaxial testing system with high temperature and high pressure[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(1)：1-8.(in Chinese))
[4]	HEARD H C. Thermal expansion and inferred permeability of climax quarts monzonite to 300 ℃ and 27.6 MPa[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1980，17(5)：289-296. " target="_blank">
[5]	MORROW C，LOCKNER D，MOORE D，et al. Permeability of granite in a temperature gradient[J]. Journal of Geophysical Research. 1981，86(B4)：3 002-3 008. " target="_blank">
[6]	HOMAND-ETIENNE F，HOUPERT R. Thermally induced microcraking in granites：characterization and analysis[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1989，26(2)：125-134. " target="_blank">
[7]	KEMENY J，ZOMENI Z. A comparison of eight methods for measuring grain and boundary cracking in heated quartzite samples[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1998，35(4)：506-507. " target="_blank">
[9]	ZHANG S Q，MERVYN S P，STEPHEN F C. Microcrack growth and healing in deformed calcite aggregates[J]. Tectonophysics，2001，335(1-2)：17-36. " target="_blank">
[11]	左建平，谢和平，周宏伟，等. 不同温度作用下砂岩热开裂的试验研究[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 temperatures[J]. Chinese Journal of Geophysics，2007，50(4)：1 150-1 155.(in Chinese)) " target="_blank">
[13]	张渊，张贤，赵阳升. 砂岩的热破裂过程[J]. 地球物理学报，2005，48(3)：656-659.(ZHANG Yuan，ZHANG Xian，ZHAO Yangsheng. Process of sandstone thermal cracking[J]. Chinese Journal of Geophysics，2005，48(3)：656-659.(in Chinese))
[16]	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))