| 利用ERT数据推求非均质多孔介质渗透系数初探 |
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| 引用本文： | 喻永祥,吴吉春. 利用ERT数据推求非均质多孔介质渗透系数初探[J]. 水文地质工程地质, 2006, 33(2): 41-44,49 |
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| 作者姓名： | 喻永祥 吴吉春 |
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| 作者单位： | 南京大学地球科学系,南京,210093 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 高密度电阻率成像法（ERT）能通过改变间距来对不同尺度上的地质体特征进行描述，近年来广泛地应用于地质、工程等领域。本文从电流场和渗流场的相似性出发来研究电阻率和渗透系数之间的关系，简要介绍了利用ERT技术所得的电阻率数据推求渗透系数的基本原理，并利用张家港大新和塘桥两处的ERT测量数据推求出渗透系数。与两地抽水试验结果和岩性取样分析的结果分别进行对比，结果较为吻合。
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| 关 键 词： | 电阻率成像 电阻率 孔隙度 渗透系数 |
| 文章编号： | 1000-3665（2006）02-0041-04 |
| 收稿时间： | 2005-04-18 |
| 修稿时间： | 2005-04-182005-10-13 |
Application of Electrical Resistivity Tomography data to estimate hydraulic conductivity in porous medium |
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| YU Yong-xiang,WU Ji-chun. Application of Electrical Resistivity Tomography data to estimate hydraulic conductivity in porous medium[J]. Hydrogeology and Engineering Geology, 2006, 33(2): 41-44,49 |
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| Authors: | YU Yong-xiang WU Ji-chun |
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| Affiliation: | Department of Earth Sciences, Nanjing University, Nanjing 210093, China |
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| Abstract: | Electrical Resistivity Tomography(ERT) can describe geologic bodies by varying electrode spacing in detail in different scales,which is widely applied in engineering,geology and so on in recent years.In this paper,the relationship between electrical resistivity and hydraulic conductivity is researched based on the similarity of the current flow field and seepage flow field,and the basic principles used to calculate the hydraulic conductivity with the resistivities obtained through ERT is introduced briefly.Then the method is applied to the ERT measure data in Daxin and Tangqiao to get the hydraulic conductivity.Finally,after compared with the results of pumping tests and sample collecting analysis in the two places respectively,the hydraulic conductivity is proved to be reasonable. |
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| Keywords: | Electrical Resistivity Tomography(ERT) electrical resistivity porosity hydraulic conductivity |
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