Development and Application of a Variable-Frequency-Based Electric Sounding System for Increasing the Accuracy of Aquifer Detection
Development and Application of a Variable-Frequency-Based Electric Sounding System for Increasing the Accuracy of Aquifer Detection
复制标题
提高含水层探测精度的变频电测深系统的开发与应用
DOI：
10.1007/s11053-020-09791-4
复制
发表时间：
2021
影响因子：
5.4
通讯作者：
Yoshida Hiroaki
中科院分区：
文献类型：
--
作者：
Asaue Hisafumi;Koike Katsuaki;Yoshinaga Tohru;Goto Tada-nori;Yoshida Hiroaki
由于全球城市化、工业和农业的发展，对地下水资源的需求增加。因此，需要有先进的地球物理技术，用于精确勘测地下水资源。虽然电测深已成为测量中的标准技术，但仅考虑电阻率和激发极化时，仍难以准确地确定地下水位和含水层分布。本文旨在通过开发一种基于变频的电测深系统来提高精度，该系统在1-100 Hz的电流透射率频率范围内以1 Hz的间隔测量视电阻率。使用土壤样品和基于水槽的含水层模型的实验表明，在21-40 Hz的频率范围内的电阻率的变化系数（Cv）是有效的检测含水层，因为它是高于其他频率范围内的系数。为了验证这一指标的有效性，进行了三个不同地质条件（即，高原，沿海，石灰岩含水层领域位于日本西南部和南部边缘。而电阻率分布随电流频率而变化，取决于字段，Cv分布是一致的，无论共同的三个测试字段的频率。虽然电阻率特性并不表明地下水位或含水层的存在，但频率范围为21-40 Hz的Cv可用于确定水位和含水层的位置，以及石灰岩含水层场中的漏斗。电动诱导振动的多孔材料是最合理的机制，解释了largeCvin的特定频率范围。通过建模和现场试验，验证了Cv和所研制的变频电测深系统的有效性。
The demand for groundwater resources has increased owing to global developments of urbanization, industry, and agriculture. There is thus a need for advanced geophysical techniques that can be used for accurate surveying of groundwater resources. Although electric sounding has been a standard technique in surveying, it is still difficult to specify the groundwater table and aquifer distribution accurately when considering only resistivity and induced polarization. The present paper aims to improve the accuracy by developing a variable-frequency-based electric sounding system that measures apparent resistivity in the frequency range of electrical current transmittance of 1–100 Hz at intervals of 1 Hz. Experiments using soil samples and an aquifer model based on a tank show that the coefficient of variation of resistivity (Cv) in the frequency range of 21–40 Hz was effective in detecting an aquifer because it was higher than coefficients in other frequency ranges. To verify the availability of this indicator, three field experiments with different geologic settings (i.e., plateau, coastal, and limestone aquifer fields located in the southwest and on the southern edge of Japan) were undertaken. Whereas resistivity distributions varied with the current frequency depending on the field,Cvdistributions were consistent regardless of the frequency common to the three test fields. Although the resistivity characteristics did not indicate the existence of a groundwater table or aquifer,Cvfor the frequency range of 21–40 Hz can be used to specify the locations of the table and aquifer and additionally the doline in the limestone aquifer field. An electrokinetically induced vibration of porous material was the most plausible mechanism that explains the largeCvin the specific frequency range. The effectiveness of usingCvand the developed variable-frequency-based electric sounding system were thus demonstrated by modeling and field experiments.
登录
查看更多内容
DOI：
10.1061/(asce)1090-0241(2006)132:4(526
发表时间：
2006-04
影响因子：
3.9
作者：
Jun Yang
通讯作者：
Jun Yang
京都市的地下水
DOI：
--
发表时间：
1963
期刊：
Special Contributions of the Geophysical Institute, Kyoto University
影响因子：
--
作者：
Kinzo Seno;K. Kikkawa;K. Yuhara;H. Kawabata
通讯作者：
H. Kawabata
我们如何预测沉积盆地的渗透率？推导和评估非胶结砂和粘土混合物的孔隙度-渗透率方程？
影响因子：
1.7
作者：
E. Luijendijk;T. Gleeson
通讯作者：
T. Gleeson
通过电阻率监测方法可视化地下水潮汐波动
DOI：
10.3124/segj.60.501
发表时间：
2007
期刊：
Butsuri-tansa(geophysical Exploration)
影响因子：
--
作者：
H. Nakazato;S. Kuroda;Keisuke Inoue;M. Takeuchi;Zhenyang Wang
通讯作者：
Zhenyang Wang
DOI：
--
发表时间：
1956
期刊：
影响因子：
--
作者：
V. Vacquier;C. R. Holmes;P. R. Kintzinger;M. Lavergne
通讯作者：
M. Lavergne