红砂岩三轴压缩变形与强度特征的试验研究

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Abstract Characters of failure，strength and deformation for red sandstone are analyzed with uniaxial compression，conventional triaxial compression and Brazil split tests by using RMT–150B rock mechanics test system. Five conventional triaxial strength criteria are fitted to the test data with least absolute deviation，and the predicted values of uniaxial compressive strength，tensile strength and fracture angle are compared to the test ones. Results show that the Mohr-Coulomb criterion presents large misfit which overestimates strengths at low and high confining pressures. The Hoek-Brown criterion，generalized Hoek-Brown criterion，Rocker criterion and the exponential strength criterion present uniaxial compressive strength just the same with experimental value of 68.0 MPa，but partial higher in tensile strength estimation. The value of prediction in generalized Hoek-Brown criterion is most closed to calculations of tensile strength and the fitting effect is better. Fracture angles of red sandstone are 52.5°–66.6° in test，which correlated with confining pressure negatively. Prediction of fracture angle in Mohr-Coulomb criterion is 65° which is larger than the actual one. The fracture angles predicted by other four criteria decrease with the increase of confining pressure and correspond with the test results.

Key words： rock mechanics red sandstone conventional triaxial compression strength criterion fracture angles

Received: 14 August 2012

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http://www.rockmech.org/EN/Y2014/V33/Isl/3164

[17]	付义胜. 五种常规三轴强度准则的比较[J]. 采矿技术，2012，12(3)：74-78.(FU Yisheng. Comparison of five conventional triaxial strength criteria[J]. Mining Technology，2012，12(3)：74-78.(in Chinese))
[4]	王洪亮，范鹏贤，王明洋，等. 应变率对红砂岩渐进破坏过程和特征应力的影响[J]. 岩土力学，2011，32(5)：1 340-1 346.(WANG Hongliang，FAN Pengxian，WANG Mingyang，et al. Influence of strain rate on progressive failure process and characteristic stresses of red sandstone[J]. Rock and Soil Mechanics，2011，32(5)：1 340-1 346. (in Chinese))
[6]	王贵荣，任建喜. 基于三轴压缩试验的红砂岩本构模型[J]. 长安大学学报：自然科学版，2006，26(6)：48-51.(WAN Guirong，REN Jianxi. Constitutive model of red sandstone based on triaxial compression
[8]	朱珍德，邢福东，刘汉龙，等. 红砂岩膨胀力学特性试验研究[J].岩石力学与工程学报，2005，24(4)：596-600.(ZHU Zhende，XING Fudong，LIU Hanlong，et al. Testing study on the slivelling mechanical behavior of red sandstone[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(4)：596-600.(in Chinese))
[1]	姚华彦，张振华，王明洋，等. 干湿交替对砂岩力学特性影响的试验研究[J]. 岩土力学，2010，31(12)：3 704-3 708.(YAO Huayan， ZHANG Zhenhua，WANG Mingyang，et al. Experimental study of mechanical properties of sandstone under cyclic drying and wetting[J]. Rock and Soil Mechanics，2010，31(12)：3 704-3 708.(in Chinese))
[2]	胡大伟，周辉，潘鹏志，等. 砂岩三轴循环加卸载条件下的渗透率研究[J]. 岩土力学，2010，31(9)：2 749-2 754.(HU Dawei，ZHOU Hui，PAN Pengzhi，et al. Study of permeability of sandstone in triaxial cyclic stress tests[J]. Rock and Soil Mechanics，2010，31(9)：2 749- 2 754.(in Chinese))
[5]	徐光苗，刘泉声，彭万巍，等. 低温作用下岩石基本力学性质试验研究[J]. 岩石力学与工程学报，2006，25(12)：2 501-2 508.(XU Guangmiao，LIU Quansheng，PENG Wanwei，et al. Experimental study on basic mechanical behaviors of rocks under low temperatures[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(12)：2 501-2 508.(in Chinese))
[7]	胡卸文，伊小娟，王帅雁，等. 不同三轴应力途径下红砂岩力学特性试验研究[J]. 水文地质工程地质，2009，36(4)：57-61.(HU Xiewen，YI Xiaojuan，WANG Shuaiyan，et al. Study on red sandstone mechanical property under different stress path by triaxial test[J]. Hydrogeology and Engineering Geology，2009，36(4)：57-61.(in Chinese))
[9]	中华人民共和国国家标准. GB/T23561.7—2009煤与岩石物理力学性质测定方法[S]. 北京：中国标准出版社，2009.(The National Standard Compilation Group of People's Republic of China. GT/T23561.7—2009 Measuring methods of Physics-mechanic property for coal and rock[S]. Beijing：Standards Press of China，2009.(in Chinese)) " target="_blank">
[12]	HOEK E，BROWN E T. Empirical strength criterion for rock masses[J]. ASCE Journal of Geotechnical Engineering Division，1980，106(GT9)：1 013-1 035. " target="_blank">
[13]	HOEK E，CARRANZA-TORRES C，CORKUM B. Hoek-Brown failure criterion-2002 edition[C]// Proceedings of NARMS-TAC 2002，Mining Innovation and Technology. Toronto：University of Toronto，2002：267-273. " target="_blank">
[15]	尤明庆. 岩石强度准则的数学形式和参数确定的研究[J]. 岩石力学与工程学报，2010，29(11)：2 172-2 183.(YOU Mingqing. Study of mathematical equation and parameter determination of strength criteria for rock[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(11)：2 172-2 183.(in Chinese))
[16]	CARTER B J，DUNCAN S E J，LAJTAI E Z. Fitting strength criteria to intact rock[J]. Geotechnical and Geological Engineering，1991，9(1)：73-81. " target="_blank">
[3]	刘彩平，段庆全. 红砂岩三向应力状态下渗透性能的实验研究[J]. 矿业研究与开发，2009，29(3)：9-11.(LIU Caiping，DUAN Qingquan. Laboratory study of permeability of red sandstone under three- dimensional stress[J]. Mining Research and Development，2009，29(3)：9-11.(in Chinese))
[18]	尤明庆. 岩石的力学性质[M]. 北京：地质出版社，2007：60-64. (YOU Mingqing. Mechanical properties of rocks[M]. Beijing：Geological Publishing House，2007：60-64.(in Chinese)) " target="_blank">
[19]	尤明庆. 岩样三轴压缩的破坏形式和Coulomb强度准则[J]. 地质力学学报，2002，8(2)：179-185.(YOU Mingqing. Destroy character and coulomb criterion of rock specimen in pseudo triaxial compression[J]. Journal of Geomechanics，2002，8(2)：179-185.(in Chinese)) " target="_blank">
	test[J]. Journal of Chang?an University：Natural Science，2006，26(6)：48-51.(in Chinese)) " target="_blank">
[10]	JAEGER J C，COOK N G W，ZIMMERMAN R W. Fundamentals of rock mechanics[M]. New York：Black Well Publishing，2007：90-97. " target="_blank">
[11]	中华人民共和国水利部. 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.(Ministry of Water Resources of the People?s Republic of China. SL264—2001 Water conservancy and hydropower engineering specifications for rock tests[S]. Beijing：China Water Power Press，2001.(in Chinese)) " target="_blank">
[14]	YOU M Q. True triaxial strength criteria for rock[J]. International Journal of Rock Mechanics and Mining Sciences，2009，46(1)：115-127.