分级加载下薄层状岩石蠕变特性研究

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摘要为研究丹巴水电站薄层状岩石二云石英片岩的蠕变特性，在RLW–2000微机控制岩石三轴蠕变试验机上对试样进行加载方向分别为平行片理面(0°)、垂直片理面(90°)及与片理面成30°夹角3个方向的单轴蠕变试验。基于试验结果，研究不同加载方向的蠕变规律；分析片理面对二云石英片岩蠕变的影响。根据蠕变曲线的特征，采用改进的西原模型对二云石英片岩蠕变进行辨识，并根据试样的蠕变试验数据拟合出改进的西原模型参数，拟合结果与试验数据比较吻合。同时，试验结果还表明，3种加载方向的长期强度为对应单轴抗压强度的0.6～0.7倍，这些结论对今后丹巴水电站二云石英片岩的研究具有重要的指导意义。

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关键词 ：岩石力学, 薄层状岩石, 蠕变特性, 二云石英片岩, 片理面

Abstract：In order to study the creep properties of mica-quartz schist which belongs to thinly laminated rock in Danba hydropower station，uniaxial creep tests of mica-quartz schist specimens which the loading directions are parallel(0°)，perpendicular and 30° to schistosity planes are performed with the computer controlled triaxial creep test machine RLW–2000. Based on the test results，the creep laws of different orientations are investigated. Then，the effects of schistosity planes on creep laws of mica-quartz schist are analyzed. According to the characteristics of creep curves，the modified Nishihara model is used to identify the creep of mica-quartz schist；the parameters of modified Nishihara model are obtained by fitting the data of creep tests；and the fitting results coincide with the test data. Furthermore，the test results reveal that the long-term strength of mica-quartz schist in three loading directions is 60%–70% of uniaxial compressive strength. These studies can provide an important guidance for future study of mica-quartz schist in Danba hydropower station.

Key words： rock mechanics thinly laminated rock creep properties mica-quartz schist schistosity plane

收稿日期: 2010-04-10

引用本文:

韩庚友1，2，王思敬1，张晓平1，2，王彦兵1，赵国斌1，马超锋1. 分级加载下薄层状岩石蠕变特性研究[J]. 岩石力学与工程学报, 2010, 29(11): 2239-2247.
(1. Key Laboratory of Engineering Geomechanics，Institute of Geology and Geophysics，Chinese Academy of Sciences，Beijing 100029，China；2. State Key Laboratory of Geomechanics and Geotechnical Engineering. STUDY OF CREEP PROPERTIES OF THINLY LAMINATED ROCK UNDER STEP LOADING. , 2010, 29(11): 2239-2247.

链接本文:

http://www.rockmech.org/CN/Y2010/V29/I11/2239

[1]	GRIGGS D T. Creep of rocks[J]. Journal of Geology，1939，47(3)：225-251. " target="_blank">
[4]	陈宗基，康文法. 岩石的封闭应力、蠕变和扩容及本构方程[J]. 岩石力学与工程学报，1991，10(4)：299-312.(TAN Tjongkie，KANG Wenfa. On the locked in stress，creep and dilatation of rocks，and the constitutive equations[J]. Chinese Journal of Rock Mechanics and Engineering，1991，10(4)：299-312.(in Chinese))
[6]	朱定华，陈国兴. 南京红层软岩流变特性试验研究[J]. 南京工业大学学报(自然科学版)，2002，24(5)：77-79.(ZHU Dinghua，CHEN Guoxing. Experimental study of Nanjing red-bed on rheology[J]. Journal of Nanjing University of Technology(Natural Science)，2002，24(5)：77-79.(in Chinese)) " target="_blank">
[8]	沈振中，徐志英. 三峡大坝地基花岗岩蠕变试验研究[J]. 河海大学学报，1997，25(2)：1-7.(SHEN Zhenzhong，XU Zhiying. Creep test of granite for the Three Gorges dam foundation[J]. Journal of Hohai University，1997，25(2)：1-7.(in Chinese)) " target="_blank">
[10]	陶振宇，王宏，余启华. 分级加载下大理岩的流变特性试验研究[J]. 四川水利发电，1991，(1)：23-29.(TAO Zhenyu，WANG Hong，YU Qihua. Experimental study on rheological properties of marble under step loading[J]. Sichuan Water Power，1991，(1)：23-29.(in Chinese)) " target="_blank">
[13]	徐志英. 岩石力学[M]. 北京：中国水利水电出版社，1997.(XU Zhiying. Rock mechanics[M]. Beijing：China Water Power Press，1997.(in Chinese)) " target="_blank">
[16]	曹树刚，边金，李鹏. 岩石蠕变本构关系及改进的西原正夫模型[J]. 岩石力学与工程学报，2002，21(5)：632-634.(CAO Shugang，BIAN Jin，LI Peng，et al. Rheologic constitutive relationship of rocks and a modified model[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(5)：632-634.(in Chinese))
[7]	YANG C H，DAEMEN J K，YIN J H. Experimental investigation of creep behavior of salt rock[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(2)：233-242. " target="_blank">
[9]	李铀，朱维申，白世伟，等. 风干与饱水状态的花岗岩单轴流变特性试验研究[J]. 岩石力学与工程学报，2003，22(10)：1 673- 1 677.(LI You，ZHU Weishen，BAI Shiwei，et al. Uniaxial experimental study on rheological properties of granite in air-dried and saturated states[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(10)：1 673-1 677.(in Chinese)) " target="_blank">
[14]	何满潮，景海河，孙晓明. 软岩工程力学[M]. 北京：科学出版社，2002.(HE Manchao，JING Haihe，SUN Xiaoming. Engineering mechanics of soft rock[M]. Beijing：Science Press，2002.(in Chinese)) " target="_blank">
[17]	尹光志，王登科，张东明，等. 含瓦斯煤岩三维蠕变特性及蠕变模型研究[J]. 岩石力学与工程学报，2008，27(增1)：2 631- 2 636.(YIN Guangzhi，WANG Dengke，ZHANG Dongming，et al. Research on triaxial creep properties and creep model of coal containing gas[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.1)：2 631-2 636.(in Chinese)) " target="_blank">
[2]	ITO H，SASAJIMA S. A thirty-year creep experiment on small rock specimens[J]. International Journal of Rock Mechanics and Mining Sciences，1987，24(2)：113-121. " target="_blank">
[3]	FUJII Y，KIYAMA T. Circumferential strain behavior during creep tests of brittle rocks[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(3)：323-337. " target="_blank">
[5]	LI Y S，XIA C C. Time-dependent tests on intact rocks in uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences，2000，37(3)：467-475. " target="_blank">
[11]	李化敏，李振华，苏承东. 大理岩蠕变特性试验研究[J]. 岩石力学与工程学报，2004，23(22)：3 745-3 749.(LI Huamin，LI Zhenhua，SU Chengdong. Testing study on creep characteristics of marble[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(22)：3 745-3 749.(in Chinese)) " target="_blank">
[12]	姜永东，鲜学福，熊德国. 砂岩蠕变特性及蠕变力学模型研究[J]. 岩土工程学报，2005，27(12)：1 478-1 481.(JIANG Yongdong，XIAN Xuefu，XIONG Deguo. Study on creep behaviour of sandstone and its mechanical models[J]. Chinese Journal of Geotechnical Engineering，2005，27(12)：1 478-1 481.(in Chinese)) " target="_blank">
[15]	中华人民共和国行业标准编写组. SL264-2001 水利水电工程岩石试验规程[S]. 北京：中国水利水电出版社，2001.(The Professional Standards Compilation Group of People¢s Republic of China. SL264-2001 Specifications for rock tests in water conservancy and hydroelectric engineering[S]. Beijing：China Water Power Press，2001.(in Chinese)) " target="_blank">
[18]	李青麒. 软岩蠕变参数的曲线拟合计算方法[J]. 岩石力学与工程学报，1998，17(5)：559-564.(LI Qingqi. Curve fitting method for creep parameter of soft rock[J]. Chinese Journal of Rock Mechanics and Engineering，1998，17(5)：559-564.(in Chinese))