层理效应对黑色页岩抗拉强度影响及其能量分析
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摘要
层理效应是影响页岩力学性能的主要因素之一,文章以龙马溪组黑色页岩为研究对象,进行了不同层理面角度页岩的巴西圆盘劈裂试验,研究了层理效应对黑色页岩抗拉强度和破坏模式的影响,并且分析了其破坏过程中能量的吸收规律,结果如下:(1)当加载方向与层理面平行时黑色页岩抗拉强度最小;(2)层理角度为0°时,黑色页岩的破坏模式为沿着层理面方向的开裂;当层理角度为22. 5°、45°、67. 5°时,页岩的破裂模为非中心破裂;当层理角度为90°时,页岩的破坏模式为中心开裂;(3)加载初期,能量吸收较慢,加载后期,能量吸收较快,能量吸收多少与层理面角度呈线性关系;(4)能量吸收和抗拉强度之间呈非线性关系,且与抗拉强度和层理面角度之间关系相似。
Bedding effect is one of the main factors influencing the mechanical properties of shale. Taking the Longmaxizu black shale as research object,Brazilian splitting test of shale is carried out from the different bedding plane angles,the influence of bedding effect on tensile strength and failure mode of the black shale is studied and the energy absorption law during the failure process is analyzed in the paper. The study results show that:(1) When loading direction is parallel to bedding plane,the black shale has the minimum tensile strength;(2) When the bedding angle is0°,black shale cracks along the bedding plane direction,When the bedding angle is 22. 5°,45°,and 67. 5°,non-central failure occurs in the shale,when the bedding angle is 90°,the central cracking occurs in the shale;(3) at the initial stage of loading,the energy absorption is slow,and at the late stage of loading,the energy absorption is fast,the energy absorption has a linear relation with the angle of bedding plane;(4) the relationship between energy absorption and tensile strength is non-linear,and similar that between tensile strength and angle of bedding plane.
Bedding effect is one of the main factors influencing the mechanical properties of shale. Taking the Longmaxizu black shale as research object,Brazilian splitting test of shale is carried out from the different bedding plane angles,the influence of bedding effect on tensile strength and failure mode of the black shale is studied and the energy absorption law during the failure process is analyzed in the paper. The study results show that:(1) When loading direction is parallel to bedding plane,the black shale has the minimum tensile strength;(2) When the bedding angle is0°,black shale cracks along the bedding plane direction,When the bedding angle is 22. 5°,45°,and 67. 5°,non-central failure occurs in the shale,when the bedding angle is 90°,the central cracking occurs in the shale;(3) at the initial stage of loading,the energy absorption is slow,and at the late stage of loading,the energy absorption is fast,the energy absorption has a linear relation with the angle of bedding plane;(4) the relationship between energy absorption and tensile strength is non-linear,and similar that between tensile strength and angle of bedding plane.
引文
[1] DAI F,CHEN R,IQBAL M J,et al. Dynamic Cracked Chevron Notched Brazilian Disc Method for Measuring Rock Fracture Parameters[J]. International Journal of Rock Mechanics and Mining Sciences,2010,47(4):606-613.
[2] WANG Q Z,LI W, XIE H P. Dynamic Split Tensile Test of Flattened Brazilian Disc of Rock with SHPB Setup[J]. Mechanics of Materials,2009,41(3):252-260.
[3] CHO S H,OGATA Y,KANEKO K,et al. Strain-rate Dependency the Dynamic Tensile Strength of Rock[J]. International Journal of Rock Mechanics and Mining Sciences,2003,40(5):763-777.
[4]尤明庆,陈向雷,苏承东.干燥及饱水岩石圆盘和圆环的巴西劈裂强度[J].岩石力学与工程学报,2011,30(3):464-472.YOU Mingqing,CHEN Xianglei,SU Chengdong. Brazilian Splitting Strengths of Discs And Rings of Rocks in Dry and Saturated Conditions[J]. Chinese Journal of Rock Mechanics and Engineering,2011,30(3):464-472.
[5] CHEN C S,PAN E,AMADEI B. Determination of Deformability and Tensile Strength of Anisotropic Rock Using Brazilian Tests[J].International Journal of Rock Mechanics and Mining Sciences,1998,35(1):43-61.
[6] DEBECKER B,VERVOORT A. Observation of Fracture Patterns in Layered Slate[J]. International Journal of Fracture,2009,159(1):51-62.
[7]刘运思,傅鹤林,饶军应,等.不同层理方位影响下板岩各向异性巴西圆盘劈裂试验研究[J].岩石力学与工程学报,2012,31(4):785-791.LIU Yunsi,FU Helin,RAO Junying,et al. Research on Brazilian Disc Splitting Tests for Anisotropy of Slate under Influence of Different Bedding Orientations[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(4):785-791.
[8]刘运思,傅鹤林,伍毅敏,等.基于单弱面理论对板岩巴西劈裂试验研究[J].煤炭学报,2013,38(10):1775-1780.LIU Yunsi,FU Helin,WU Yimin,et al. Study on Brazilian Splitting Test for Slate Based on Single Weak Plane Theory[J]. Journal of China Coal Society,2013,38(10):1775-1780.
[9]谭鑫,HEINZ Konietzky(德国).含层理构造的非均质片麻岩巴西劈裂试验及离散单元法数值模拟研究[J].岩石力学与工程学报,2014,33(5):938-946.TAN Xin,HEINZ Konietzky(Germany). Brazilian Split Tests and Numerical Simulation by Discrete Element Method for Heterogeneous Gneiss with Bedding Structure[J]. Chinese Journal of Rock Mechanics Engineering,2014,33(5):938-946.
[10]黄耀光,王连国,陈家瑞,等.平台巴西劈裂试验确定岩石抗拉强度的理论分析[J].岩土力学,2015,36(3):739-748.HUANG Yaoguang,WANG Lianguo,CHEN Jiarui,et al. Theoretical Analysis of Flattened Brazilian Splitting Test for Determining Tensile Strength of Rocks[J]. Rock and Soil Mechanics,2015,36(3):739-748.
[11] Jung-Woo c,Hnana k,Seokwon J,et al. Deformation and Strength Anisotropy of Asan Gneiss,Boryeong Shale,and Yeoncheon Schist[J]. International Journal of Rock Mechanics and Mining Sciences,2012,50(1):158-169.
[12]宫凤强,李夕兵,ZHAO J(瑞士).巴西圆盘劈裂试验中拉伸模量的解析算法[J].岩石力学与工程学报,2010,29(5):881-891.GONG Fengqiang,LI Xibing,ZHAO J(Switzerland). Analytical Algorithm to Estimate Tensile Modulus in Brazilian Disk Splitting Tests,[J]. Chinese Journal of Rock Mechanics and Engineering,2010,29(5):881-891.
[13]谢和平,彭瑞东,鞠杨,等.岩石破坏的能量分析初探[J].岩石力学与工程学报,2005,24(15):2603-2608.XIE Heping,PENG Ruidong,JU Yang,et al. On Energy Analysis of Rock Failure[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(15):2603-2608.
[14]尤明庆,华安增.岩石试样破坏过程的能量分析[J].岩石力学与工程学报,2002,21(6):778-781.YOU Mingqing,HUA Anzeng. Energy Analysis on Failure process of Rock Specimens[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(6):778-781.
[15]张金川,聂海宽,徐波,等.四川盆地页岩气成藏地质条件[J].天然气工业,2008,28(2):151-156.ZHANG Jinchuan,NIE Haikuan,XU Bo,et al. Geological Condition of Shale Gas Accumulation in Sichuan Basin[J]. Natural Gas Industry,2008,28(2):151-156.
[16]赵建华,金之钧,金振奎,等.四川盆地五峰组——龙马溪组含气页岩中石英成因研究[J].天然气地球科学,2016,27(2):377-386.ZHAO Jianhua,JIN Zhijun,JIN Zhenkui,et al. The Genesis Of Quartz in Wufeng-Longmaxi Gas Shales,Sichuan Basin[J]. Natural Gas Geoscience,2016,27(2):377-386.
[17] Claesson J,Bohloli B. Brazilian Test:Stress Field and Tensile Strength of Anisotropic Rocks Using An Analytical Solution[J].International Journal of Rock Mechanics and Mining Sciences,2002,39(8):991-1004.
[18] Amadei B,Rogers J D,Goodman R E. Elastic Constants and Tensile Strength of Anisotropic Rocks[C]//5th IRSM Congress.International Society for Rock Mechanics,1983.
[19] Chen C S,Pan E,Amadei B. Determination of Deformability and Tensile Strength of Anisotropic Rock Using Brazilian Tests[J].International Journal of Rock Mechanics and Mining Sciences,1998,35(1):43-61.
[2] WANG Q Z,LI W, XIE H P. Dynamic Split Tensile Test of Flattened Brazilian Disc of Rock with SHPB Setup[J]. Mechanics of Materials,2009,41(3):252-260.
[3] CHO S H,OGATA Y,KANEKO K,et al. Strain-rate Dependency the Dynamic Tensile Strength of Rock[J]. International Journal of Rock Mechanics and Mining Sciences,2003,40(5):763-777.
[4]尤明庆,陈向雷,苏承东.干燥及饱水岩石圆盘和圆环的巴西劈裂强度[J].岩石力学与工程学报,2011,30(3):464-472.YOU Mingqing,CHEN Xianglei,SU Chengdong. Brazilian Splitting Strengths of Discs And Rings of Rocks in Dry and Saturated Conditions[J]. Chinese Journal of Rock Mechanics and Engineering,2011,30(3):464-472.
[5] CHEN C S,PAN E,AMADEI B. Determination of Deformability and Tensile Strength of Anisotropic Rock Using Brazilian Tests[J].International Journal of Rock Mechanics and Mining Sciences,1998,35(1):43-61.
[6] DEBECKER B,VERVOORT A. Observation of Fracture Patterns in Layered Slate[J]. International Journal of Fracture,2009,159(1):51-62.
[7]刘运思,傅鹤林,饶军应,等.不同层理方位影响下板岩各向异性巴西圆盘劈裂试验研究[J].岩石力学与工程学报,2012,31(4):785-791.LIU Yunsi,FU Helin,RAO Junying,et al. Research on Brazilian Disc Splitting Tests for Anisotropy of Slate under Influence of Different Bedding Orientations[J]. Chinese Journal of Rock Mechanics and Engineering,2012,31(4):785-791.
[8]刘运思,傅鹤林,伍毅敏,等.基于单弱面理论对板岩巴西劈裂试验研究[J].煤炭学报,2013,38(10):1775-1780.LIU Yunsi,FU Helin,WU Yimin,et al. Study on Brazilian Splitting Test for Slate Based on Single Weak Plane Theory[J]. Journal of China Coal Society,2013,38(10):1775-1780.
[9]谭鑫,HEINZ Konietzky(德国).含层理构造的非均质片麻岩巴西劈裂试验及离散单元法数值模拟研究[J].岩石力学与工程学报,2014,33(5):938-946.TAN Xin,HEINZ Konietzky(Germany). Brazilian Split Tests and Numerical Simulation by Discrete Element Method for Heterogeneous Gneiss with Bedding Structure[J]. Chinese Journal of Rock Mechanics Engineering,2014,33(5):938-946.
[10]黄耀光,王连国,陈家瑞,等.平台巴西劈裂试验确定岩石抗拉强度的理论分析[J].岩土力学,2015,36(3):739-748.HUANG Yaoguang,WANG Lianguo,CHEN Jiarui,et al. Theoretical Analysis of Flattened Brazilian Splitting Test for Determining Tensile Strength of Rocks[J]. Rock and Soil Mechanics,2015,36(3):739-748.
[11] Jung-Woo c,Hnana k,Seokwon J,et al. Deformation and Strength Anisotropy of Asan Gneiss,Boryeong Shale,and Yeoncheon Schist[J]. International Journal of Rock Mechanics and Mining Sciences,2012,50(1):158-169.
[12]宫凤强,李夕兵,ZHAO J(瑞士).巴西圆盘劈裂试验中拉伸模量的解析算法[J].岩石力学与工程学报,2010,29(5):881-891.GONG Fengqiang,LI Xibing,ZHAO J(Switzerland). Analytical Algorithm to Estimate Tensile Modulus in Brazilian Disk Splitting Tests,[J]. Chinese Journal of Rock Mechanics and Engineering,2010,29(5):881-891.
[13]谢和平,彭瑞东,鞠杨,等.岩石破坏的能量分析初探[J].岩石力学与工程学报,2005,24(15):2603-2608.XIE Heping,PENG Ruidong,JU Yang,et al. On Energy Analysis of Rock Failure[J]. Chinese Journal of Rock Mechanics and Engineering,2005,24(15):2603-2608.
[14]尤明庆,华安增.岩石试样破坏过程的能量分析[J].岩石力学与工程学报,2002,21(6):778-781.YOU Mingqing,HUA Anzeng. Energy Analysis on Failure process of Rock Specimens[J]. Chinese Journal of Rock Mechanics and Engineering,2002,21(6):778-781.
[15]张金川,聂海宽,徐波,等.四川盆地页岩气成藏地质条件[J].天然气工业,2008,28(2):151-156.ZHANG Jinchuan,NIE Haikuan,XU Bo,et al. Geological Condition of Shale Gas Accumulation in Sichuan Basin[J]. Natural Gas Industry,2008,28(2):151-156.
[16]赵建华,金之钧,金振奎,等.四川盆地五峰组——龙马溪组含气页岩中石英成因研究[J].天然气地球科学,2016,27(2):377-386.ZHAO Jianhua,JIN Zhijun,JIN Zhenkui,et al. The Genesis Of Quartz in Wufeng-Longmaxi Gas Shales,Sichuan Basin[J]. Natural Gas Geoscience,2016,27(2):377-386.
[17] Claesson J,Bohloli B. Brazilian Test:Stress Field and Tensile Strength of Anisotropic Rocks Using An Analytical Solution[J].International Journal of Rock Mechanics and Mining Sciences,2002,39(8):991-1004.
[18] Amadei B,Rogers J D,Goodman R E. Elastic Constants and Tensile Strength of Anisotropic Rocks[C]//5th IRSM Congress.International Society for Rock Mechanics,1983.
[19] Chen C S,Pan E,Amadei B. Determination of Deformability and Tensile Strength of Anisotropic Rock Using Brazilian Tests[J].International Journal of Rock Mechanics and Mining Sciences,1998,35(1):43-61.
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