Development of a New Mining Intrinsically Safe DC Electrical Prospecting Apparatus

Ning, Dianyan; Xu, Wenjun; Qin, Honggang; Liu, Jingke

doi:10.1016/j.proeps.2011.09.095

Cited by 3 publications

(1 citation statement)

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“…On the other hand, electrical resistivity has been an established method for monitoring temporal and spatial moisture contents in clay embankment [8,9], as well as groundwater surveys using a multi-electrode resistivity method [10]. Recently, performance of electrical resistivity equipments has been improved by integrated circuits with multi-electrode channels to reduce the time for measurements [11][12][13]. Several researchers have reported the methodologies based on resistivity methods to measure electrical impedance: measurement of reinforced concrete specimens containing pre-corrosion and post-corrosion for health evaluation of structures [14], monitoring the crop root system using multi-frequency electrical impedance tomography [15], the determination of water content in substrate root with different water content [16], and measurement of an apparent resistivity ratio using two different frequencies to find aquifers [17].…”

Section: Introductionmentioning

confidence: 99%

Measurement of Apparent Electrical Impedance of Soil with Water Flow Inside

Talapessy

Ikegami

Yoshida³

2020

Water

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Understanding the flow of groundwater is very important, not only for water management but also for the prevention and mitigation of natural disasters. The electrical resistivity method has been established as an effective groundwater exploration method in geological surveys. The purpose of this study is to develop an accurate investigation method for groundwater flow using soil impedance fluctuations. As a preliminary experiment, the apparent soil impedance was measured by applying a low-frequency current through a soil column with water flow inside. The apparent impedance showed fluctuations due to water flow at frequencies above 20 Hz, and the fluctuation range increased with the flow rate of water. It has been proposed that groundwater flow can be detected by measuring impedance fluctuations, and it is considered that this method can be applied to groundwater surveys and embankment and reservoir leak surveys.

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