Influence of Power Supply Current in Electrical Landfill Leakage Detection Method

Shao Peng Guan; Yu Ling Wang; Chang Xin Nai; Jing Cai Liu

doi:10.4028/www.scientific.net/AMM.29-32.2686

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 29-32Influence of Power Supply Current in Electrical...

Influence of Power Supply Current in Electrical Landfill Leakage Detection Method

Abstract:

The electrical method is effective on detecting and locating leaks in geomembrane liners for landfills. If a leak exists in the liner, an anomaly in the measured potential is generated in the immediate vicinity of the leak through which electrical current is flowing. But the power supply current above the liner can affect the potential distribution. A current point source model for power supply current was set up in this paper. The potential equation induced by the point source was derived. The analysis of potential expression shows that: 1) the potential generated by the power supply current is proportional to the current size and the medium resistivity; 2) as the medium thickness increases, the potential reduces; 3) to reduce the influence of power supply current, the power supply electrode should be away from the detection area as far as possible.

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Periodical:

Applied Mechanics and Materials (Volumes 29-32)

Pages:

2686-2691

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.29-32.2686

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Online since:

August 2010

Authors:

Shao Peng Guan, Yu Ling Wang, Chang Xin Nai, Jing Cai Liu

Keywords:

High Voltage DC Method, Landfill, Leakage Detection, Power Supply Current

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References

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