摘要
岩石的渗透特性对于岩石工程的安全具有很大影响,研究岩石渗透特性对于评估岩石工程安全稳定性具有重要意义。采用电化学阻抗谱检测技术对岩石的渗透特性进行研究,先用CHI660E型电化学工作站对岩石试样进行电化学检测试验,再用HYS-4型岩石渗透分析仪对这些岩石试样进行渗透性试验,进而分析岩石试样电化学阻抗谱中高频弧段技术参数与渗透系数间的关系。试验结果表明:岩石试样的渗透特性与其电化学阻抗谱存在相关性;随着高频弧段渗透系数K的增大,起止点俯视角值减小;电化学阻抗谱中的特征参数R 1-R 2与渗透系数K存在指数函数关系。
The permeability of rock has great influence on the safety of rock engineering,which is very important to study its characteristics of rock to evaluate the safety and stability of rock engineering.In this experiment,electrochemical impedance spectroscopy(EIS)was used to study the permeability of rock.Firstly,CHI660E electrochemical workstation is used to carry out electrochemical detection tests on rock samples,and then HYS-4 rock permeability analyzer is used to carry out permeability tests on these rock samples,thus analyzing the relationship between technical parameters of high-frequency arc section and permeability coefficient in electrochemical impedance spectrum of rock samples.The results show that there is a correlation between the permeability characteristics of rock samples and their electrochemical impedance spectra.With the increase of the permeability coefficient K of the high frequency arc,the top view Angle decreases.The characteristic parameter R1-R2 in the electrochemical impedance spectrum has an exponential function relation with the permeability coefficient K.Therefore,the microscopic mechanism of rock permeability can be studied from the perspective of electrochemistry,providing a means for the safety and stability detection of rock engineering.
作者
胡江春
李德威
管毅
李晨
HU Jiang-chun;LI De-wei;GUAN Yi;LI Chen(School of Architecture and Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China;Qingyuan Chengjian Geotechnical Engineering Co.Ltd.,Guangzhou 511500,China)
出处
《河南城建学院学报》
CAS
2019年第4期35-38,共4页
Journal of Henan University of Urban Construction
基金
国家自然科学基金项目(51574296)
关键词
渗透特性
电化学阻抗谱
特征参数
infiltration characteristics
electrochemical impedance spectroscopy
characteristic parameters
作者简介
胡江春(1971-),男,河南灵宝人,博士,教授,主要从事岩土工程方面的教学与研究工作。
