脆性岩石全应力应变过程中渗透性突变研究
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摘要
针对岩体结构与渗透性对应关系的复杂性,直接建立二者的量化关系模型存在极大的技术难度问题,利用伺服渗透试验结果,分析脆性岩石全应力应变过程中渗透性演化和加载变形破坏特征,得出渗透性变化过程中存在跳跃突变点,该点处的应力和临界破坏强度以及岩石体胀点处应力处于同一应力水平;通过岩石统计强度分析,借助重整化群理论,在岩石试样承载能力概率函数基础上推导出脆性岩石临界破坏强度与峰值应力比值的表达式,该比值随围压增大而减小。用该公式预测伺服渗透试验中的渗透性突变点位置。研究结果表明:大多数脆性岩石预测值与试验值较吻合,误差在0.089~0.058之间,验证了该表达式的合理性。
Based on the fact that it's a great technical problem to establish the quantitative relationship model between rock structure and permeability for the complexity,permeability evolution and load deformation characteristics of brittle rock in complete stress-strain path were analysed based on servo-controlled penetration test.The results show that there is a mutation whose corresponding stress is the same as critical failure strength and the stress of rock volume expansion point in permeability change process.The expression is derived for brittle rock critical failure strength and peak stress ratio which decrease with the increase of the confining pressure through statistical strength and renormalization group theory based on carrying capacity of the rock sample probability function.Permeability catastrophe in servo-control testing is predicted using this formula.Predictive value is in good agreement with experimental value for most brittle rock and the error is from ?0.089 to 0.058.
Based on the fact that it's a great technical problem to establish the quantitative relationship model between rock structure and permeability for the complexity,permeability evolution and load deformation characteristics of brittle rock in complete stress-strain path were analysed based on servo-controlled penetration test.The results show that there is a mutation whose corresponding stress is the same as critical failure strength and the stress of rock volume expansion point in permeability change process.The expression is derived for brittle rock critical failure strength and peak stress ratio which decrease with the increase of the confining pressure through statistical strength and renormalization group theory based on carrying capacity of the rock sample probability function.Permeability catastrophe in servo-control testing is predicted using this formula.Predictive value is in good agreement with experimental value for most brittle rock and the error is from ?0.089 to 0.058.
引文
[1]李世平,李玉寿,吴振业.岩石全应力应变过程对应的渗透率应变方程[J].岩土工程学报,1995,17(2):1319.LI Shi-ping,LI Yu-shou,WU Zhen-ye.The permeability-strainequations relating to complete stress-strain path of the rock[J].Chinese Journal of Geotechnical Engineering,1995,17(2):13 19.
[2]彭苏萍,屈洪亮,罗立平,等.沉积岩石全应力应变过程的渗透性试验研究[J].煤炭学报,2000,25(2):113116.PENG Su-ping,QU Hong-liang,LUO Li-ping,et al.Anexperimental study on the penetrability of sedimentary rockduring the complete stress-strain path[J].Journal of China CoalSociety,2000,25(2):113 116.
[3]彭苏萍,孟召平,王虎,等.不同围压下砂岩孔渗规律试验研究[J].岩石力学与工程学报,2003,22(5):742746.PENG Su-ping,MENG Zhao-ping,WANG Hu,et al.Testingstudy on pore ratio and permeability of sandstone under differentconfining pressures[J].Chinese Journal of Rock Mechanics andEngineering,2003,22(5):742 746.
[4]姜振泉,季梁军.岩石全应力应变过程渗透性试验研究[J].岩土工程学报,2001,23(2):153156.JIANG Zhen-quan,JI Liang-jun.The laboratory study onbehavior of permeability of rock along the complete stress-strainpath[J].Chinese Journal of Geotechnical Engineering,2001,23(2):153 156.
[5]姜振泉,季梁军,左如松,等.岩石在伺服条件下的渗透性与应变、应力的关联性特征[J].岩石力学与工程学报,2002,21(10):1442 1446.JIANG Zhen-quan,JI Liang-jun,ZUO Ru-song,et al.Correlation among rock permeability and strain,stress underservo-control condition[J].Chinese Journal of Rock Mechanicsand Engineering,2002,21(10):1442 1446.
[6]朱珍德,张爱军,徐卫亚.脆性岩石全应力应变过程渗流特性试验研究[J].岩土力学,2002,23(5):555559.ZHU Zhen-de,ZHANG Ai-jun,XU Wei-ya.Experimentalresearch on complete stress-strain process seepage characteristicsof brittle rock[J].Rock and Soil Mechanics,2002,23(5):555 559.
[7]韩宝平,冯启言,于礼山,等.全应力应变过程中碳酸盐岩渗透性研究[J].工程地质学报,2000,8(2):127129.HAN Bao-ping,FENG Qi-yan,YU Li-shan,et al.Study on thepermeability of carbonate during full periods of stress-strain[J].Journal of Engineering Geology,2000,8(2):127 129.
[8]王金安,彭苏萍,孟召平.岩石三轴全应力应变过程中的渗透规律[J].北京科技大学学报,2001,23(6):489491.WANG Jin-an,PENG Su-ping,MENG Zhao-ping.Permeabilityrule in full strain-stress process of rock under triaxialCompression[J].Journal of University of Science andTechnology Beijing,2001,23(6):489 491.
[9]李长洪,张立新,姚作强,等.两种岩石的不同类型渗透特性实验及其机理分析[J].北京科技大学学报,2010,32(2):158 164.LI Chang-hong,ZHANG Li-xin,YAO Zuo-qiang,et al.Permeability characteristics experiment and its mechanismanalysis of two types of rocks[J].Journal of University ofScience and technology Beijing,2010,32(2):158 164.
[10]杨天鸿,唐春安,朱万成,等.岩石破裂过程渗流与应力耦合分析[J].岩土工程学报,2001,23(4):489494.YANG Tian-hong,TANH Chun-an,ZHU Wan-cheng,et al.Coupling analysis of seepage and stresses in rock failureprocess[J].Chinese Journal of Geotechnical Engineering,2001,23(4):489 494.
[11]杨天鸿.岩石破裂过程渗透性质及其与应力耦合作用研究[D].沈阳:东北大学资源与土木工程学院,2001:6163.YANG Tian-hong.Study on infiltrate character and couplinganalysis of seepage and stress in rock failure process[D].Shenyang:Northeastern University.School of Resource andCivil Engineering,2001:61 63.
[12]刘洪磊,杨天鸿,于庆磊,等.凝灰岩破坏全过程渗流演化规律的实验研究[J].东北大学学报:自然科学版,2009,30(7):1030 1033.LIU Hong-lei,YANG Tian-hong,YU Qing-lei,et al.Experimental study on fluid permeation evolution in wholefailure process of tuff[J].Journal of Northeastern University:Natural Science,2009,30(7):1030 1033.
[13]仵彦卿,曹广祝,王殿武.基于X-射线CT方法的岩石小裂纹扩展过程分析[J].应用力学学报,2005,22(3):484492.WU Yan-qing,CAO Guang-zhu,WANG Dian-wu.Microfracturing processes of rock by real-time observation ofX-ray CT[J].China Journal of Applied Mechanics,2005,22(3):484 492.
[14]Bieniawski Z T.Time-dependent behaviour of fractured rock[J].Rock Mechanics and Rock Engineering,1970,2(3):123 127.
[15]秦四清,徐锡伟,胡平,等.孕震断层的多锁固段脆性破裂机制与地震预测新方法的探索[J].地球物理学报,2010,53(4):1001 1014.QIN Si-qing,XU Xi-wei,HU Ping,et al.Brittle failuremechanism of multiple locked patches in a seismogenic faultsystem and exploration on a new way for earthquakeprediction[J].Chinese Journal of Geophysics,2010,53(4):1001 1014.
[16]Hudson J A,Fairhurst C.Tensile strength,Weibull’s theory and ageneral statistical approach to rock failure[C]//The Proceedingsof the Southampton 1969 Civil Engineering MaterialsConference.Southampton,England,1969:901 914.
[17]Allegre C J,Mouel J L L,Provost A.Scaling rules in rockfracture and possible implications for earthquake prediction[J].Nature,1982,297:47 49.
[18]Smalley R F,Turcotte D L,Solla S A.A renormalization groupapproach to the stick slip behavior of faults[J].J Geophys Res,1985,90:1894 1900.
[19]Wilson K G..Problems in physics with many scales of length[J].Sci Am,1979,241:158 179.
[20]冯增朝,赵阳升,吕兆兴.强随机分布裂隙介质的二维逾渗规律研究[J].岩石力学与工程学报,2006,25(S2):39043908.FENG Zeng-chao,ZHAO Yang-sheng,LU Zhao-xing.Researchon laws of 2D percolation of fully random distribution fracturemedia[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(Supp.2):3904 3908.
[21]陈忠辉,谭国焕,杨文柱.岩石脆性破裂的重正化研究及数值模拟[J].岩土工程学报,2002,24(2):183187.CHEN Zhong-hui,TAN Guo-huan,YANG Wen-zhu.Renormalization study and numerical simulation on brittlefailure of rocks[J].Chinese Journal of Geotechnical Engineering,2002,24(2):183 187.
[22]曹文贵,赵明华,刘成学.基于weibull分布的岩石损伤软化模型及其修正方法研究[J].岩石力学与工程学报,2004,23(19):3226 3231.CAO Wen-gui,ZHAO Ming-hua,LIU Cheng-xue.Study onmodel and its modifying method for rock softening and damagebased on weibull random distribution[J].Chinese Journal ofRock Mechanics and Engineering,2004,23(19):3226 3231.
[2]彭苏萍,屈洪亮,罗立平,等.沉积岩石全应力应变过程的渗透性试验研究[J].煤炭学报,2000,25(2):113116.PENG Su-ping,QU Hong-liang,LUO Li-ping,et al.Anexperimental study on the penetrability of sedimentary rockduring the complete stress-strain path[J].Journal of China CoalSociety,2000,25(2):113 116.
[3]彭苏萍,孟召平,王虎,等.不同围压下砂岩孔渗规律试验研究[J].岩石力学与工程学报,2003,22(5):742746.PENG Su-ping,MENG Zhao-ping,WANG Hu,et al.Testingstudy on pore ratio and permeability of sandstone under differentconfining pressures[J].Chinese Journal of Rock Mechanics andEngineering,2003,22(5):742 746.
[4]姜振泉,季梁军.岩石全应力应变过程渗透性试验研究[J].岩土工程学报,2001,23(2):153156.JIANG Zhen-quan,JI Liang-jun.The laboratory study onbehavior of permeability of rock along the complete stress-strainpath[J].Chinese Journal of Geotechnical Engineering,2001,23(2):153 156.
[5]姜振泉,季梁军,左如松,等.岩石在伺服条件下的渗透性与应变、应力的关联性特征[J].岩石力学与工程学报,2002,21(10):1442 1446.JIANG Zhen-quan,JI Liang-jun,ZUO Ru-song,et al.Correlation among rock permeability and strain,stress underservo-control condition[J].Chinese Journal of Rock Mechanicsand Engineering,2002,21(10):1442 1446.
[6]朱珍德,张爱军,徐卫亚.脆性岩石全应力应变过程渗流特性试验研究[J].岩土力学,2002,23(5):555559.ZHU Zhen-de,ZHANG Ai-jun,XU Wei-ya.Experimentalresearch on complete stress-strain process seepage characteristicsof brittle rock[J].Rock and Soil Mechanics,2002,23(5):555 559.
[7]韩宝平,冯启言,于礼山,等.全应力应变过程中碳酸盐岩渗透性研究[J].工程地质学报,2000,8(2):127129.HAN Bao-ping,FENG Qi-yan,YU Li-shan,et al.Study on thepermeability of carbonate during full periods of stress-strain[J].Journal of Engineering Geology,2000,8(2):127 129.
[8]王金安,彭苏萍,孟召平.岩石三轴全应力应变过程中的渗透规律[J].北京科技大学学报,2001,23(6):489491.WANG Jin-an,PENG Su-ping,MENG Zhao-ping.Permeabilityrule in full strain-stress process of rock under triaxialCompression[J].Journal of University of Science andTechnology Beijing,2001,23(6):489 491.
[9]李长洪,张立新,姚作强,等.两种岩石的不同类型渗透特性实验及其机理分析[J].北京科技大学学报,2010,32(2):158 164.LI Chang-hong,ZHANG Li-xin,YAO Zuo-qiang,et al.Permeability characteristics experiment and its mechanismanalysis of two types of rocks[J].Journal of University ofScience and technology Beijing,2010,32(2):158 164.
[10]杨天鸿,唐春安,朱万成,等.岩石破裂过程渗流与应力耦合分析[J].岩土工程学报,2001,23(4):489494.YANG Tian-hong,TANH Chun-an,ZHU Wan-cheng,et al.Coupling analysis of seepage and stresses in rock failureprocess[J].Chinese Journal of Geotechnical Engineering,2001,23(4):489 494.
[11]杨天鸿.岩石破裂过程渗透性质及其与应力耦合作用研究[D].沈阳:东北大学资源与土木工程学院,2001:6163.YANG Tian-hong.Study on infiltrate character and couplinganalysis of seepage and stress in rock failure process[D].Shenyang:Northeastern University.School of Resource andCivil Engineering,2001:61 63.
[12]刘洪磊,杨天鸿,于庆磊,等.凝灰岩破坏全过程渗流演化规律的实验研究[J].东北大学学报:自然科学版,2009,30(7):1030 1033.LIU Hong-lei,YANG Tian-hong,YU Qing-lei,et al.Experimental study on fluid permeation evolution in wholefailure process of tuff[J].Journal of Northeastern University:Natural Science,2009,30(7):1030 1033.
[13]仵彦卿,曹广祝,王殿武.基于X-射线CT方法的岩石小裂纹扩展过程分析[J].应用力学学报,2005,22(3):484492.WU Yan-qing,CAO Guang-zhu,WANG Dian-wu.Microfracturing processes of rock by real-time observation ofX-ray CT[J].China Journal of Applied Mechanics,2005,22(3):484 492.
[14]Bieniawski Z T.Time-dependent behaviour of fractured rock[J].Rock Mechanics and Rock Engineering,1970,2(3):123 127.
[15]秦四清,徐锡伟,胡平,等.孕震断层的多锁固段脆性破裂机制与地震预测新方法的探索[J].地球物理学报,2010,53(4):1001 1014.QIN Si-qing,XU Xi-wei,HU Ping,et al.Brittle failuremechanism of multiple locked patches in a seismogenic faultsystem and exploration on a new way for earthquakeprediction[J].Chinese Journal of Geophysics,2010,53(4):1001 1014.
[16]Hudson J A,Fairhurst C.Tensile strength,Weibull’s theory and ageneral statistical approach to rock failure[C]//The Proceedingsof the Southampton 1969 Civil Engineering MaterialsConference.Southampton,England,1969:901 914.
[17]Allegre C J,Mouel J L L,Provost A.Scaling rules in rockfracture and possible implications for earthquake prediction[J].Nature,1982,297:47 49.
[18]Smalley R F,Turcotte D L,Solla S A.A renormalization groupapproach to the stick slip behavior of faults[J].J Geophys Res,1985,90:1894 1900.
[19]Wilson K G..Problems in physics with many scales of length[J].Sci Am,1979,241:158 179.
[20]冯增朝,赵阳升,吕兆兴.强随机分布裂隙介质的二维逾渗规律研究[J].岩石力学与工程学报,2006,25(S2):39043908.FENG Zeng-chao,ZHAO Yang-sheng,LU Zhao-xing.Researchon laws of 2D percolation of fully random distribution fracturemedia[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(Supp.2):3904 3908.
[21]陈忠辉,谭国焕,杨文柱.岩石脆性破裂的重正化研究及数值模拟[J].岩土工程学报,2002,24(2):183187.CHEN Zhong-hui,TAN Guo-huan,YANG Wen-zhu.Renormalization study and numerical simulation on brittlefailure of rocks[J].Chinese Journal of Geotechnical Engineering,2002,24(2):183 187.
[22]曹文贵,赵明华,刘成学.基于weibull分布的岩石损伤软化模型及其修正方法研究[J].岩石力学与工程学报,2004,23(19):3226 3231.CAO Wen-gui,ZHAO Ming-hua,LIU Cheng-xue.Study onmodel and its modifying method for rock softening and damagebased on weibull random distribution[J].Chinese Journal ofRock Mechanics and Engineering,2004,23(19):3226 3231.
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