节理抗剪强度综合评价的试验研究
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摘要
选取不同吻合度自然节理试样,进行干燥状态和饱和状态的JRC-JCS模型和JRC-JMS模型试验研究。结果表明,在节理粗糙度系数的定向统计测量和尺寸效应分析,以及剪切过程衰减折减的基础上,运用JRC-JCS模型综合评价节理抗剪强度可靠性较好,考虑吻合度系数的JRC-JMC模型比JRC-JCS模型具更好的预测能力。
This paper presents a comprehensive experimental evaluation of rock joint shear strength.The test specimens are natural rock joints and have differential anastomotic degrees.The paper presents the tests for the JRC-JCS model and the JRC-JMS model in drying and saturated conditions.The test results show that the comprehensive evaluation of rock joint shear strength by the JRC-JCS model has a good reliability on the bases of the directional statistical measurement,the analysis of JRC scale effect,as well as the consideration of reduced JRC during shearing.The JRC-JMC model considering anastomotic degree can better predict the rock joint shear strength than the JRC-JCS model.
This paper presents a comprehensive experimental evaluation of rock joint shear strength.The test specimens are natural rock joints and have differential anastomotic degrees.The paper presents the tests for the JRC-JCS model and the JRC-JMS model in drying and saturated conditions.The test results show that the comprehensive evaluation of rock joint shear strength by the JRC-JCS model has a good reliability on the bases of the directional statistical measurement,the analysis of JRC scale effect,as well as the consideration of reduced JRC during shearing.The JRC-JMC model considering anastomotic degree can better predict the rock joint shear strength than the JRC-JCS model.
引文
[1]Du Shigui.Research on complexity of surface undulating shapes of rock joints[J].Journal of China University of Geosciences,1998,9(1):86～89.
[2]杜时贵,唐辉明.岩体断裂粗糙度系数的各向异性研究[J].工程地质学报,1993,1(2):32～41.Du Shigui,Tang Huiming.Study on the anisotropy of joint rough-ness coefficient in rock mass.Journal of Engineering Geology,1993,1(2):32～41.
[3]杜时贵.岩体节理粗糙度系数JRC的定向统计研究[J].工程地质学报,1994,2(3):62～71.Du Shigui.The directive statistical evaluation of rock joint rough-ness coefficient(JRC).Journal of Engineering Geology,1994,2(3):62～71.
[4]杜时贵,陈禹,樊良本.JRC修正直边法的数学表达[J].工程地质学报,1996,4(2)36～43.Du Shigui.Mathematical expression ofJRCmodified straight edge.Journal of Engineering Eology,1996,4(2)36～43.
[5]杜时贵,杨树峰,姜舟,朱益军,万颖君.JRC快速测量技术[J].工程地质学报,2002,10(1):98～102.Du Shigui.A new technique for fast measurement of JRC.Journalof Engineering Geology,2002,10(1):98～102.
[6]Barton N.Review of a new shear strength for rock joint[J].Eng.Geol.,1973,579～602.
[7]Barton N.&Choubey V.The shear strength of rock joints in theory and practice[J].Rock Mech.,1977,10,1～54.
[8]Barton N.&Bandis S.Review of predictive capability of JRC-JCS model in engineering practice[J].Rock Joints.,Balkema A A.1990,603～610.
[9]杜时贵.岩体节理的工程性质[M].北京:地震出版社,1999.Du Shigui.Engineering properties of rock joints[M].Beijing:Seismic Press,1999.
[10]杜时贵.岩体节理抗剪强度综合评价[M].北京:地震出版社,2005.Du Shigui.Comprehensive evaluation of shear strength of rock joints.Beijing:Seismic Press,2005.
[11]Zhao J.Joint surface matching and shear strength.Part A:Joint Matching Coefficient(JMC)[J].Int.J.Rock Mech.Min.Sci.Geomech.Abst.,1997a,(34):173～178.
[12]Zhao J.Joint surface matching and shear strength.Part B:JRC-JMC shear strength criterion[J].Int.J.Rock Mech.Min.Sci.Geomech.Abst.,1997b,(34):179～185.
[13]Geertsema A.J.The shear strength of planar joints in mudstone[J].Int.J.Rock Mech.Min.Sci.Geomech.Abst.,2002,(39):1045～1049.
[14]中华人民共和国行业标准编写组.水利水电工程岩石力学试验规程(SL264-2001)[S].北京:中国水利水电出版社,2001.Professional Standards Compilation Group of People's Republic of China.Specifications for rock tests in water conservancy and hy-droelectric engineering(SL264-2001)[S].Beijing:China Wa-ter Power Press,2001.
[15]Homand F.,Belem T.&Souley M.Friction and degradation of rock joints surface under shear loads[J].Int.J.Numer.Anal.Mech.Geomech.,2001,(25):973～999.
[16]Bandis S,Lumsden A C&Barton N R.Experimental studies of scale effects on the shear behavior of rock joints[J].Int.J.Rock Mech.Min.Sci.&Geomech..Abstr.,1981,181～21.
[17]Zhao J.Joint matching coefficient and effects to behaviour of rock joint[J].岩石力学与工程学报,1997,16(6):514～521.Zhao J.Joint matching coefficient and effects to behaviour of rock joint[J].Journal of Rock Mechanics and Engineering,1997,16(6):514～521.
[18]杜时贵,胡晓飞,王驹,徐健.甘肃北山地质处置库围岩节理抗剪强度经验估算[J].工程地质学报,2006,14(4):502～507.Du Shigui,Hu Xiaofei,Wang Ju,Xu Jian.Empirical estimation of shear strength parameters for rock joints surrounding the proposed geological disposal repository in Beishan,Gansu province,China.Journal of Engineering Geology,2006,14(4):502～507.
[19]杜时贵,颜育仁,胡晓飞,郭霄.JRC-JCS模型抗剪强度估算的平均斜率法[J].工程地质学报,2005,13(4):489～493.Du Shigui,et al..Average slope method for estimating shear strength of JRC-JCS model.Journal of Engineering Geology,2005,13(2):113～116.
[2]杜时贵,唐辉明.岩体断裂粗糙度系数的各向异性研究[J].工程地质学报,1993,1(2):32～41.Du Shigui,Tang Huiming.Study on the anisotropy of joint rough-ness coefficient in rock mass.Journal of Engineering Geology,1993,1(2):32～41.
[3]杜时贵.岩体节理粗糙度系数JRC的定向统计研究[J].工程地质学报,1994,2(3):62～71.Du Shigui.The directive statistical evaluation of rock joint rough-ness coefficient(JRC).Journal of Engineering Geology,1994,2(3):62～71.
[4]杜时贵,陈禹,樊良本.JRC修正直边法的数学表达[J].工程地质学报,1996,4(2)36～43.Du Shigui.Mathematical expression ofJRCmodified straight edge.Journal of Engineering Eology,1996,4(2)36～43.
[5]杜时贵,杨树峰,姜舟,朱益军,万颖君.JRC快速测量技术[J].工程地质学报,2002,10(1):98～102.Du Shigui.A new technique for fast measurement of JRC.Journalof Engineering Geology,2002,10(1):98～102.
[6]Barton N.Review of a new shear strength for rock joint[J].Eng.Geol.,1973,579～602.
[7]Barton N.&Choubey V.The shear strength of rock joints in theory and practice[J].Rock Mech.,1977,10,1～54.
[8]Barton N.&Bandis S.Review of predictive capability of JRC-JCS model in engineering practice[J].Rock Joints.,Balkema A A.1990,603～610.
[9]杜时贵.岩体节理的工程性质[M].北京:地震出版社,1999.Du Shigui.Engineering properties of rock joints[M].Beijing:Seismic Press,1999.
[10]杜时贵.岩体节理抗剪强度综合评价[M].北京:地震出版社,2005.Du Shigui.Comprehensive evaluation of shear strength of rock joints.Beijing:Seismic Press,2005.
[11]Zhao J.Joint surface matching and shear strength.Part A:Joint Matching Coefficient(JMC)[J].Int.J.Rock Mech.Min.Sci.Geomech.Abst.,1997a,(34):173～178.
[12]Zhao J.Joint surface matching and shear strength.Part B:JRC-JMC shear strength criterion[J].Int.J.Rock Mech.Min.Sci.Geomech.Abst.,1997b,(34):179～185.
[13]Geertsema A.J.The shear strength of planar joints in mudstone[J].Int.J.Rock Mech.Min.Sci.Geomech.Abst.,2002,(39):1045～1049.
[14]中华人民共和国行业标准编写组.水利水电工程岩石力学试验规程(SL264-2001)[S].北京:中国水利水电出版社,2001.Professional Standards Compilation Group of People's Republic of China.Specifications for rock tests in water conservancy and hy-droelectric engineering(SL264-2001)[S].Beijing:China Wa-ter Power Press,2001.
[15]Homand F.,Belem T.&Souley M.Friction and degradation of rock joints surface under shear loads[J].Int.J.Numer.Anal.Mech.Geomech.,2001,(25):973～999.
[16]Bandis S,Lumsden A C&Barton N R.Experimental studies of scale effects on the shear behavior of rock joints[J].Int.J.Rock Mech.Min.Sci.&Geomech..Abstr.,1981,181～21.
[17]Zhao J.Joint matching coefficient and effects to behaviour of rock joint[J].岩石力学与工程学报,1997,16(6):514～521.Zhao J.Joint matching coefficient and effects to behaviour of rock joint[J].Journal of Rock Mechanics and Engineering,1997,16(6):514～521.
[18]杜时贵,胡晓飞,王驹,徐健.甘肃北山地质处置库围岩节理抗剪强度经验估算[J].工程地质学报,2006,14(4):502～507.Du Shigui,Hu Xiaofei,Wang Ju,Xu Jian.Empirical estimation of shear strength parameters for rock joints surrounding the proposed geological disposal repository in Beishan,Gansu province,China.Journal of Engineering Geology,2006,14(4):502～507.
[19]杜时贵,颜育仁,胡晓飞,郭霄.JRC-JCS模型抗剪强度估算的平均斜率法[J].工程地质学报,2005,13(4):489～493.Du Shigui,et al..Average slope method for estimating shear strength of JRC-JCS model.Journal of Engineering Geology,2005,13(2):113～116.
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