饱水与晶体粒度对北山花岗岩断裂韧度影响的试验研究

doi:10.13722/j.cnki.jrme.2016.1248

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Abstract

The fracture toughness(K_IC) of five typical granites taken from the Beishan candidate area for geological disposal of high-level radioactive waste was investigated through three-point bending test，with the purpose to study the influence of saturation process and grain size on K_IC of granite. By comparing the curves of dry and saturated granite under cyclic loading and unloading condition，it is indicated that the saturation process can result in a significant degradation of initial cracking strength and fracture toughness，and accelerate the crack propagation speed in post-peak phase. Experimental data show that K_IC of dry and saturated samples are 1 576– 2 139 N/cm^1.⁵ and 1 463–1 848 N/cm^1.5，respectively，and mean values of K_IC of saturated granite are about 90% of dry ones in the same group. Meanwhile，it is noticed that K_IC of Beishan granite decreases remarkably with the increase of average particle size，rock mineral composition and particle forms also have certain influence on the variation of K_IC. At last，the fracture propagation process were analyzed with the recorded AE events.

Key words： rock mechanics Beishan granite fracture toughness saturation grain size Acoustic emission

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	Articles by authors
	LI Ying1
	CHEN Liang1
	LIU Jianfeng2
	LIU Jian1
	WANG Chunping1
	WANG Ju1

Cite this article:

LI Ying1,CHEN Liang1,LIU Jianfeng2, et al. Experimental study on influence of saturation process and grain size on the fracture toughness of the Beishan granite[J]. , 2018, 37(S1): 3169-3177.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.1248 OR https://rockmech.whrsm.ac.cn/EN/Y2018/V37/IS1/3169

[1] 国家发展和改革委员会. 核电中长期发展规划(2005～2020年)[R].北京：[s. n.]，2007.(State Development and Reform Commission. Mid-long term development plan for nuclear power(between 2005 and 2020)[R]. Beijing：[s. n.]，2007.(in Chinese))

[2] 王驹，范显华，徐国庆，等. 中国高放废物地质处置十年进展[M]. 北京：原子能出版社，2004：1–12.(WANG Ju，FAN Xianhua，XU Guoqing，et al. Geological disposal of high-level radioactive waste in China progress in last decade[M]. Beijing：Atomic Energy Press，2004： 1–12.(in Chinese))

[3] WANG J. High-level radioactive waste disposal in China：update 2010[J]. Journal of Rock Mechanics and Geotechnical Engineering，2010，2(1)：1–11.

[4] International Atomic Energy Agency. Scientific and technical basis for the geological disposal of radioactive waste[R]. Vienna：Technical Reports Series，International Atomic Energy Agency，2003.

[5] Swedish Nuclear Fuel and Waste Management Company. Deep Repository for spent Nuclear Fuel SR 97-Post-closure Safety[R]. Sweden：Main Report Summary，Technical Report TR-99-06，1999.

[6] 王驹，陈伟明，苏锐，等. 高放废物地质处置及其若干关键科学问题[J]. 岩石力学与工程学报，2006，25(4)：801–812.(WANG Ju，CHENG Weiming，SU Rui，et al. High level radioactive waste disposal and certain of its several key issues[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(4)：801–812.(in Chinese))

[7] 刘月妙，王驹，谭国焕，等. 高放废物处置北山预选区深部完整岩石基本物理力学性能及时温效应[J]. 岩石力学与工程学报，2007，26(10)：2 034–2 042.(LIU Yuemiao，WANG Ju，THAM L G，et al. Basic physico-mechanical properties and time-temperature effect of deep intact rock from Beishan preselected area for high-level radioactive waste disposal[J]. Chinese Journal of Rock Mechanics and

Engineering，2007，26(10)：2 034–2 042.(in Chinese))

[8] 潘自强，钱七虎. 高放废物地质处置战略研究[M]. 北京：原子能出版社，2009：37–39.(PAN Ziqiang，QIAN Qihu. Strategic research for deep geological disposal of high level radioactive waste[M]. Beijing：Atomic Energy Press，2009：37–39.(in Chinese))

[9] International Atomic Energy Agency. Scientific and technical basis for the geological disposal of radioactive waste[R]. Vienna：Technical Reports Series，International Atomic Energy Agency，2003.

[10] 贾学明，王启智. 标定ISRM岩石断裂韧度新型试样CCNBD的应力强度因子[J]．岩石力学与工程学报，2003，22(8)：1 227–1 233. (JIA Xueming，WANG Qizhi. Calibration of stress intensity factor for new type of fracture toughness specimen suggested by ISRM[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(8)：1 227–1 233.(in Chinese))

[11] 谢和平，陈忠辉. 岩石力学[M]. 北京：科学出版社，2004：136–152.(XIE Heping，CHEN Zhonghui. Rock mechanics[M]. Beijing：Science Press，2004：136–152.(in Chinese))

[12] 崔振东，刘大安，安光明，等. 岩石I型断裂韧度测试方法研究进展[J]. 测试技术学报，2009，23(3)：189–196.(CUI Zhendong，LIU Daan，AN Guangming，et al. Research Progress in Mode-I fracture toughness testing methods for rocks[J]. Journal of Test and Measurement Technology，2009，23(3)：189–196.(in Chinese))

[13] WANG Q Z. Stress intensity factor of ISRM suggested CCNBD specimen used for mode-I fracture toughness determining[J]. International Journal of Rock Mechanics and Mining Sciences，1998，35(7)：977–982.

[14] 孙宗颀，饶秋华，王桂尧. 岩石剪切断裂韧度(K_IC)确定的研究[J]. 岩石力学与工程学报，2002，21(2)：199–203.(SUN Zhongqi，RAO Qiuhua，WANG Guiyao. Determination for rock shear fracture toughness(K_IC)[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(2)：199–203.(in Chinese))

[15] 尹祥础，颜玉定，李红. 不同方法测定岩石断裂韧度K_IC的研究[J]. 岩石力学与工程学报，1990，9(4)：328–333.(YIN Xiangchu，YAN Yuding，LI Hong. Research for determining the fracture toughness (K_IC) of rock by using different methods[J]. Chinese Journal of Rock Mechanics and Engineering，1990，9(4)：328–333.(in Chinese))

[16] 张盛，王启智. 用5 种圆盘试件的劈裂试验确定岩石断裂韧度[J]. 岩土力学，2009，3(1)：12–18.(ZHANG Sheng，WANG Qizhi. Determination of rock fracture toughness by split test using five types of disc specimens[J]. Rock and Soil Mechanics，2009，3(1)：12–18. (in Chinese))

[17] 王启智，鲜学福. 岩石三点弯曲圆梁断裂韧度K_IC的测试研究[J].重庆大学学报：自然科学版，1992，15(5)：101–106.(WANG Qizhi，XIAN Xuefu. An investigation for testing rock fracture toughness with three-point bend round bar[J]. Journal of Chongqing University：Natural Science Edition，1992，15(5)：101–106.(in Chinese))

[18] SHAO J F，CHAU K T，FENG X T. Modeling of anisotropic damage and creep deformation in brittle rocks[J]. International Journal of Rock Mechanics and Mining Sciences，2006，43(4)：582–592.

[19] SHAO J F，HOXHA D，BART M，et al. Modelling of induced anisotropic damage in granites[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(8)：1 001–1 012.

[20] YOSHITAKA N，KAZUYA M，NAOKI H，et al. Influence of relative humidity on fracture toughness of rock：Implications for subcritical crack growth[J]. International Journal of Solids and Structures，2012，49(18)：2 471–2 481.

[21] MEREDITH P G，ATKINSON B K. Fracture toughness and subcritical crack growth during high-temperature tensile deformation of Westerly granite and Black gabbro[J]. Physics of the Earth and Planetary Interiors，1985，39(1)：33–51.

[22] NASSERI M H B，SCHUBNEL A，YOUNG R P，et al. Coupled evolutions of fracture toughness and elastic wave velocities at high crack density in thermally treated Westerly granite[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(4)：601–616.

[23] 左建平，周宏伟. 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)：2 423–2 430.(ZUO Jianping，ZHOU Hongwei. Research on fracture behavior of Beishan granite after heat treatment under three-point bending[J]. Chinese Journal of Rock Mechanics and Engineering，2013，31(12)：2 423–2 430.(in Chinese))

[24] ISRM Testing Commission．Suggested methods for determining the fracture toughness of rock[J]. Mining Sciences，1988，25：76–77.

[25] CHENG L，LIU J F，WANG C P，et al. Characterizing of damage evolution in granite under compressive stress condition and its effect on permeability[J]. International Journal of Rock Mechanics and Mining Sciences，2014，71(10)：340–349.

[26] 左建平，周宏伟，谢和平. 不同温度影响下砂岩的断裂特性研究[J] .工程力学，2008，25(5)：124–130.(ZUO Jianping，ZHOU Hongwei，XIE Heping. Fracture characteristics of sandstone under thermal effects[J]. Engineering Mechanics，2008，25(5)：124–130.(in Chinese))