交流阻抗谱法及其在岩石微裂纹检测中的应用
|
摘要
交流阻抗谱法可以检测各种固体、液体内部以及它们界面的束缚和移动电荷的动力学行为。文中介绍了建立在阻抗概念上的技术。利用CHI600A型电化学工作站,测试了不同物理状态下砂岩的阻抗谱。结果显示:砂岩的阻抗谱分为四段圆弧。通过对砂岩阻抗谱Nyquist曲线的分析,结合前人多孔介质交流阻抗谱的研究成果知道,岩石Nyquist曲线上不同频率段的圆弧表征岩石内部不同构造层次的电化学过程。其中高频弧是一段容抗弧,表征岩石的体积特征,包括岩样内部的空隙大小、空隙连通情况以及空隙尺寸的均匀程度等的阻抗特征;并选取高频容抗弧上表示岩石微观结构的指标对砂岩的阻抗谱进行分析,建立了Nyquist曲线上的相关参数和岩石微观结构的联系,为岩石微裂纹的检测提供了新思路。
The impedance spectroscopy might be used to investigate the dynamics behavior of bound or mobile charge in the bulk or interfacial regions of any kind of solid or liquid materials.The technique of impedance was introduced firstly.The impedance spectroscopy of sandstone was tested at different physical states by CHI600A electrochemical workstation.It was shown that the impedance spectroscopy of rock included four parts.To analyze the Nyquist chart of rock and the data of impedance spectroscopy of porous medium,the variation of AC impedance spectroscopy(ACIS) revealed the variation of the different inner structure of rock.The high frequency part of ACIS was one-stage capacity reactance arc which reflected the volume characteristics of rock,including the size and connection condition of rock inner pore and their uniformity.The parameters of rock microstructure in the high frequency part of ACIS were selected.The relation of the parameters of the high frequency part of ACIS and rock microstructure was established.It was a new idea to test the rock microstructure.
The impedance spectroscopy might be used to investigate the dynamics behavior of bound or mobile charge in the bulk or interfacial regions of any kind of solid or liquid materials.The technique of impedance was introduced firstly.The impedance spectroscopy of sandstone was tested at different physical states by CHI600A electrochemical workstation.It was shown that the impedance spectroscopy of rock included four parts.To analyze the Nyquist chart of rock and the data of impedance spectroscopy of porous medium,the variation of AC impedance spectroscopy(ACIS) revealed the variation of the different inner structure of rock.The high frequency part of ACIS was one-stage capacity reactance arc which reflected the volume characteristics of rock,including the size and connection condition of rock inner pore and their uniformity.The parameters of rock microstructure in the high frequency part of ACIS were selected.The relation of the parameters of the high frequency part of ACIS and rock microstructure was established.It was a new idea to test the rock microstructure.
引文
[1]戚承志,赵跃堂,等.材料时间性破坏准则及其内在联系[J].世界地震工程,2002,18(2):56–60.(QI Cheng-zhi,ZHAO Yue-tang,et al.The temporal fracture criteria of material and their intrinsic relationship[J].World Earthquake Engineering,2002,18(2):56–60.(in Chinese))
[2]戚承志,王明洋,赵跃堂,等.关于地质材料内部构造层次的若干模型[J].世界地震工程,2003,19(1):70–76.(QI Cheng-zhi,WANG Ming-yang,ZHAO Yue-tang,et al.On some models of internal structural hierarchy of geomaterials[J].World Earthquake Engineering,2003,19(1):70–76.(in Chinese))
[3]MASSEY S W.Application of fractal geometry and electrical impendance measurement for the assessment of strength[J].Building and Environment,1996,31(6):493–501.
[4]COLE K S,COLE R H.Dispersion and absorption in dielectrics:I.alternating current characteristics[J].Journal of Chemical Physics,1941,9(4):341–351.
[5]RUFFET C,GUEGUEN Y,DAROT M.Complex conductivity measurement and fractal nature of porosity[J].Geophysics,1991,56(6):758–768.
[6]MCCARTER W J,BROUSSEAU R.The AC response of hardened cement paste[J].Cem Concr Res,1990,20(6):891–900.
[7]GU P,XIE P,FU Y,BEAUDOIN J J.AC impedance phenomena in hydrating cement system:frequency dispersion angle and pore size distribution[J].Cem Concr Res,1994,24(1):86–88.
[8]朱维申,陈卫忠,申晋.雁形裂纹扩展的模型试验及断裂力学机制研究[J].固体力学学报,1998,19(4):355–360.(ZHU Wei-shen,CHEN Wei-zhong,SHEN Jin.Simulation experiment and fracture mechanism study on propagation of echelon pattern cracks[J].Acta Mechanica Solida Sinica,1998,19(4):355–360.(in Chinese))
[9]代立东,李和平,刘丛强,等.高温高压下二辉橄榄岩的阻抗谱实验研究[J].高压物理学报,2005,19(1):29–34.(DAI Li-dong,LI He-ping,LIU Cong-qiang,et al.Experimental study on impedance spectra of iherzolite under high temperature and high pressure[J].Chinese Journal of High Pressure Physics,2005,19(1):29–34.(in Chinese))
[10]NOVER G,HELKAMP S,FREUND D.Electrical impedance spectroscopy used as a tool for the detection of fractures in rock samples exposed to either hydrostatic or triaxial pressure conditions[J].Natural Hazards,2000,21(2-3):317–330.
[11]阿伦J巴德,拉里R福克纳.电化学方法原理和应用[M].北京:化学工业出版社.2005(BARD Allen J,FAULKNER Larry R.Electrochemical methods fundamentals and Applications[M].Beijing:Chemical Industry Press,2005.(in Chinese))
[12]PERRON S,BEAUDOIN J J.Freezing of water in portland cement paste-an AC impedance spectroscopy study[J].Cement&Concretes Composites,2004,24(5):467–475.
[2]戚承志,王明洋,赵跃堂,等.关于地质材料内部构造层次的若干模型[J].世界地震工程,2003,19(1):70–76.(QI Cheng-zhi,WANG Ming-yang,ZHAO Yue-tang,et al.On some models of internal structural hierarchy of geomaterials[J].World Earthquake Engineering,2003,19(1):70–76.(in Chinese))
[3]MASSEY S W.Application of fractal geometry and electrical impendance measurement for the assessment of strength[J].Building and Environment,1996,31(6):493–501.
[4]COLE K S,COLE R H.Dispersion and absorption in dielectrics:I.alternating current characteristics[J].Journal of Chemical Physics,1941,9(4):341–351.
[5]RUFFET C,GUEGUEN Y,DAROT M.Complex conductivity measurement and fractal nature of porosity[J].Geophysics,1991,56(6):758–768.
[6]MCCARTER W J,BROUSSEAU R.The AC response of hardened cement paste[J].Cem Concr Res,1990,20(6):891–900.
[7]GU P,XIE P,FU Y,BEAUDOIN J J.AC impedance phenomena in hydrating cement system:frequency dispersion angle and pore size distribution[J].Cem Concr Res,1994,24(1):86–88.
[8]朱维申,陈卫忠,申晋.雁形裂纹扩展的模型试验及断裂力学机制研究[J].固体力学学报,1998,19(4):355–360.(ZHU Wei-shen,CHEN Wei-zhong,SHEN Jin.Simulation experiment and fracture mechanism study on propagation of echelon pattern cracks[J].Acta Mechanica Solida Sinica,1998,19(4):355–360.(in Chinese))
[9]代立东,李和平,刘丛强,等.高温高压下二辉橄榄岩的阻抗谱实验研究[J].高压物理学报,2005,19(1):29–34.(DAI Li-dong,LI He-ping,LIU Cong-qiang,et al.Experimental study on impedance spectra of iherzolite under high temperature and high pressure[J].Chinese Journal of High Pressure Physics,2005,19(1):29–34.(in Chinese))
[10]NOVER G,HELKAMP S,FREUND D.Electrical impedance spectroscopy used as a tool for the detection of fractures in rock samples exposed to either hydrostatic or triaxial pressure conditions[J].Natural Hazards,2000,21(2-3):317–330.
[11]阿伦J巴德,拉里R福克纳.电化学方法原理和应用[M].北京:化学工业出版社.2005(BARD Allen J,FAULKNER Larry R.Electrochemical methods fundamentals and Applications[M].Beijing:Chemical Industry Press,2005.(in Chinese))
[12]PERRON S,BEAUDOIN J J.Freezing of water in portland cement paste-an AC impedance spectroscopy study[J].Cement&Concretes Composites,2004,24(5):467–475.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心