不同应力路径下灰砂岩力学特性与强度参数研究
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摘要
基于常规岩石力学试验设备与自行研制的岩石空心圆柱扭剪试验系统,开展灰砂岩直剪试验、常规三轴压缩试验与空心圆柱三轴压缩(内外压相等与内外压不等)试验,研究不同应力路径下岩石的力学特性和强度参数。通过比较常规三轴压缩试验与空心圆柱三轴压缩(内外压相等)试验结果,验证了岩石空心圆柱扭剪试验系统以及采用空心圆柱试样进行试验的可行性,内外压不等的空心圆柱三轴压缩试验可以反映中间主应力对强度参数的影响。通过比较不同类型试验获取的灰砂岩强度参数,认为按D-P准则整理的岩石空心圆柱三轴压缩(内外压不等)试验数据,获取的强度参数能合理地反映应力状态和应力路径的影响。
To investigate mechanical properties and strength parameters of gray sandstone in complex stress state,direct shear test,conventional triaxial compression test and hollow cylindrical triaxial compression test(coupled inner and outer confining pressures) were carried out by the conventional rock mechanics test equipment and self-developed hollow cylinder torsional apparatus for rock. By comparing the test results of conventional and hollow cylindrical triaxial compression(equal inner and outer confining pressures) tests,the test ability of the hollow cylinder torsional apparatus for rock and the feasibility of hollow cylindrical specimen were verified. It is shown that the hollow cylindrical triaxial compression test(different inner and outer confining pressures) can reflect the influence of the intermediate principal stress on strength parameters. Comparisons of the strength parameters of gray sandstone obtained by different types of experiments were performed,and it is revealed that the strength parameters calculated by the test data of hollow cylindrical triaxial compression test(coupled inner and outer confining pressure) based on D-P criterion can better reflect the influence of the stress state and stress path.
To investigate mechanical properties and strength parameters of gray sandstone in complex stress state,direct shear test,conventional triaxial compression test and hollow cylindrical triaxial compression test(coupled inner and outer confining pressures) were carried out by the conventional rock mechanics test equipment and self-developed hollow cylinder torsional apparatus for rock. By comparing the test results of conventional and hollow cylindrical triaxial compression(equal inner and outer confining pressures) tests,the test ability of the hollow cylinder torsional apparatus for rock and the feasibility of hollow cylindrical specimen were verified. It is shown that the hollow cylindrical triaxial compression test(different inner and outer confining pressures) can reflect the influence of the intermediate principal stress on strength parameters. Comparisons of the strength parameters of gray sandstone obtained by different types of experiments were performed,and it is revealed that the strength parameters calculated by the test data of hollow cylindrical triaxial compression test(coupled inner and outer confining pressure) based on D-P criterion can better reflect the influence of the stress state and stress path.
引文
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[11]ALSAYED M I.Rock behaviour under multiaxial compression[Ph.D.Thesis][D].Newcastle,UK:University of Newcastle upon Tyne,1996.
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[17]GAY N C.Fracture growth around openings in thick-walled cylinders of rock subjected to hydrostatic compression[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1973,10:209-233.
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[21]吴秋红,李夕兵,赵伏军,等.石灰岩孔道试样孔内卸压条件下破坏特征的研究[J].岩石力学与工程学报,2017,36(6):1 424-1 433.(WU Qiuhong,LI Xibing,ZHAO Fujun,et al.Failure characteristics of hollow cylindrical specimens of limestone under hole pressure unloading[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(6):1 424-1 433.(in Chinese))
[22]周喻,吴庆良,杜晓伟,等.岩石厚壁圆筒试验破坏的细观力学机制[J].岩石力学与工程学报,2016,35(9):1 854-1 863.(ZHOUYu,WU Qingliang,DU Xiaowei,et al.Meso mechanical mechanisms of thick-walled hollow rock cylinder during failure process[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(9):1 854-1 863.(in Chinese))
[23]周火明,单治钢,张宜虎,等.复杂应力状态石英云母片岩强度参数研究[J].岩石力学与工程学报,2015,34(增1):2 601-2 606.(ZHOU Huoming,SHAN Zhigang,ZHANG Yihu,et al.Strength parameters of quartz-mica schist under complex stress state[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(Supp.1):2 601-2 606.(in Chinese))
[24]ZHOU H,JIANG Y,LU J J,et al.Development of a hollow cylinder torsional apparatus for rock[J].Rock Mechanics and Rock Engineering,2018,DOI:10.1007/s00603-018-1563-5.
[25]周辉,姜玥,卢景景,等.岩石空心圆柱扭剪仪试验能力[J].岩土力学,2018,40(5):1 917-1 922.(ZHOU Hui,JIANG Yue,LUJingjing,et al.Test ability of hollow cylinder torsional apparatus for rock[J].Rock and Soil Mechanics,2018,40(5):1 917-1 922.(in Chinese))
[26]周辉,姜玥,卢景景,等.一种空心圆柱岩石试样制备钻头及钻机[P].中国:201611066833.3,2016-11-25.(ZHOU Hui,JIANGYue,LU Jingjing,et al.A drill bit and machine of hollow cylinder for rock sample preparation[P].China:201611066833.3,2016-11-25.(in Chinese))
[27]HIGHT D W,GENS A,SYMES M J.The development of a new hollow cylinder apparatus for investigating the effects of principal stress rotation in soils[J].Geotenique,1983,33(4):355-383.
[28]VAID Y P,SAYAO A,HOU E,et al.Generalized stress-pathdependent soil behaviour with a new hollow cylinder torsional apparatus[J].Canadian Geotechnical Journal,1990,27(5):601-616.
[29]邹宗兴,唐辉明,徐伟,等.三轴试验莫尔包络线模型拟合[J].地质科技情报,2011,30(3):118-122.(ZHOU Zongxing,TANGHuiming,XU Wei,et al.Fitting for Mohr envelope model in triaxial test[J].Geological Science and Technology Information,2011,30(3):118-122.(in Chinese))
[2]李琦,宋然然,匡冬琴,等.二氧化碳地质封存与利用工程废弃井技术的现状与进展[J].地球科学进展,2016,31(3):225-235.(LIQi,SONG Ranran,KUANG Dongqin,et al.Status and advances of abandoned process of wells for CCS[J].Advances In Earth Science,2016,31(3):225-235.(in Chinese))
[3]尤明庆.岩石试样的强度及变形破坏过程[M].北京:地质出版社,2000:1-156.(YOU Mingqing.Strength,deformation and failure process of rock specimens[M].Beijing:Geological Publishing House,2000:1-156.(in Chinese))
[4]杨圣奇,苏承东,徐卫亚.大理岩常规三轴压缩下的强度和变形特性的试验研究[J].岩土力学,2005,26(3):475-478.(YANGShengqi,SU Chengdong,XU Weiya.Experimental investigation on strength and deformation properties of marble under conventional triaxial compression[J].Rock and Soil Mechanics,2005,26(3):475-478.(in Chinese))
[5]高阳,周辉,张传庆,等.硬脆性岩石时效强度理论研究[J].岩石力学与工程学报,2018,37(3):671-678.(GAO Yang,ZHOU Hui,ZHANG Chuanqing,et al.Research on the time-dependent strength criterion of brittle hard rock[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(3):671-678.(in Chinese))
[6]ROBERTSON E C.Experimental study of the strength of rocks[J].Bulletin of the Geological Society of America,1955,66:1 275-1 314.
[7]缑勇,苏承东,秦莞臻.含孔道大理岩圆柱试样的尺寸效应[J].采矿与安全工程学报,2007,24(3):302-305.(GOU Yong,SUChengdong,QIN Guanzhen.Scale effects of marble hollow cylinder specimen[J].Journal of Mining and Safety Engineering,2007,24(3):302-305.(in Chinese))
[8]MAZANTI B B,SOWERS G F.Laboratory testing of rock strength.Testing techniques for rock mechanics[C]//ASTM STP402.Philadelphia:American Society of Testing Materials,1966:207-227.
[9]HOSHINS E R.The failure of thick-walled hollow cylinders of isotropic rock[J].International Journal of Rocks Mechanics and Mining Sciences,1969,6(1):99-125.
[10]ALSAYED M I.Laboratory testing of thick-walled hollow cylinders of rock[M.S.Thesis][D].Newcastle,UK:University of Newcastle upon Tyne,1988.
[11]ALSAYED M I.Rock behaviour under multiaxial compression[Ph.D.Thesis][D].Newcastle,UK:University of Newcastle upon Tyne,1996.
[12]ALSAYED M I.Utilising the Hoek triaxial cell for multiaxial testing of hollow rock cylinders[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,2002,39(3):355-366.
[13]廖正杰.岩石中空试体之三轴及剪力行为与其在岩石工程之应用[博士学位论文][D].台湾:国立成功大学,2012.(LIAO Chengjie.Mechanical behavior of hollow cylinder rock specimens under triaxial and ring shear tests and its application[Ph.D Thesis][D].Taiwan:National Cheng Kung University,2012.(in Chinese))
[14]尤明庆,苏承东,缑勇.大理岩孔道试样的强度及变形特性的试验研究[J].岩石力学与工程学报,2007,26(12):2 420-2 429.(YOUMingqing,SU Chengdong,GOU Yong.Experimental study on strength and deformation properties of hollow cylindrical specimens of marbles[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(12):2 420-2 429.(in Chinese))
[15]尤明庆,苏承东.砂岩孔道试样压拉应力下强度和破坏的研究[J].岩石力学与工程学报,2010,29(6):1 096-1 105.(YOU Mingqing,SU Chengdong.Study of strength and failure of hollow cylinders and rings of sandstone under compression-tension stresses[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(6):1 096-1 105.(in Chinese))
[16]BANDIS S C,LINDMAN J,BARTON N.Three-dimensional stress state and fracturing around cavities in overstressed weak rock[C]//Proceedings of the 6th International Congress on Rock Mechanics Montreal.[S.l.]:[s.n.],1987:769-775.
[17]GAY N C.Fracture growth around openings in thick-walled cylinders of rock subjected to hydrostatic compression[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1973,10:209-233.
[18]GAY N C.Fracture growth around openings in large blocks of rock subjected to uniaxial and biaxial compression[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1976,13:231-243.
[19]李夕兵,吴秋红,董陇军,等.含充填物的厚壁圆筒砂岩的力学性质研究[J].岩土工程学报,2015,37(12):2 149-2 156.(LI Xibing,WU Qiuhong,DONG Longjun,et al.Mechanical property of thickwalled hollow cylinders of sandstone with filling[J].Chinese Journal of Geotechnical Engineering,2015,37(12):2 149-2 156.(in Chinese))
[20]张后全,刘红岗,贺永年,等.岩石厚壁圆筒三向压缩下的卸荷试验与岩石强度破坏[J].北京科技大学学报,2011,33(7):800-805.(ZHANG Houquan,LIU Honggang,HE Yongnian,et al.Unloading experiment and rock strength failure of rock thick-walled cylinders under triaxial compression[J].Journal of University of Science and Technology Beijing,2011,33(7):800-805.(in Chinese))
[21]吴秋红,李夕兵,赵伏军,等.石灰岩孔道试样孔内卸压条件下破坏特征的研究[J].岩石力学与工程学报,2017,36(6):1 424-1 433.(WU Qiuhong,LI Xibing,ZHAO Fujun,et al.Failure characteristics of hollow cylindrical specimens of limestone under hole pressure unloading[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(6):1 424-1 433.(in Chinese))
[22]周喻,吴庆良,杜晓伟,等.岩石厚壁圆筒试验破坏的细观力学机制[J].岩石力学与工程学报,2016,35(9):1 854-1 863.(ZHOUYu,WU Qingliang,DU Xiaowei,et al.Meso mechanical mechanisms of thick-walled hollow rock cylinder during failure process[J].Chinese Journal of Rock Mechanics and Engineering,2016,35(9):1 854-1 863.(in Chinese))
[23]周火明,单治钢,张宜虎,等.复杂应力状态石英云母片岩强度参数研究[J].岩石力学与工程学报,2015,34(增1):2 601-2 606.(ZHOU Huoming,SHAN Zhigang,ZHANG Yihu,et al.Strength parameters of quartz-mica schist under complex stress state[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(Supp.1):2 601-2 606.(in Chinese))
[24]ZHOU H,JIANG Y,LU J J,et al.Development of a hollow cylinder torsional apparatus for rock[J].Rock Mechanics and Rock Engineering,2018,DOI:10.1007/s00603-018-1563-5.
[25]周辉,姜玥,卢景景,等.岩石空心圆柱扭剪仪试验能力[J].岩土力学,2018,40(5):1 917-1 922.(ZHOU Hui,JIANG Yue,LUJingjing,et al.Test ability of hollow cylinder torsional apparatus for rock[J].Rock and Soil Mechanics,2018,40(5):1 917-1 922.(in Chinese))
[26]周辉,姜玥,卢景景,等.一种空心圆柱岩石试样制备钻头及钻机[P].中国:201611066833.3,2016-11-25.(ZHOU Hui,JIANGYue,LU Jingjing,et al.A drill bit and machine of hollow cylinder for rock sample preparation[P].China:201611066833.3,2016-11-25.(in Chinese))
[27]HIGHT D W,GENS A,SYMES M J.The development of a new hollow cylinder apparatus for investigating the effects of principal stress rotation in soils[J].Geotenique,1983,33(4):355-383.
[28]VAID Y P,SAYAO A,HOU E,et al.Generalized stress-pathdependent soil behaviour with a new hollow cylinder torsional apparatus[J].Canadian Geotechnical Journal,1990,27(5):601-616.
[29]邹宗兴,唐辉明,徐伟,等.三轴试验莫尔包络线模型拟合[J].地质科技情报,2011,30(3):118-122.(ZHOU Zongxing,TANGHuiming,XU Wei,et al.Fitting for Mohr envelope model in triaxial test[J].Geological Science and Technology Information,2011,30(3):118-122.(in Chinese))