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• W1975358565 abstract "가축사체 매몰지로부터 유출되는 침출수는 환경적으로 치명적인 영향을 주는 고농도 오염폐수의 일종이다. 본 연구에서는 효율적인 가축사체 매몰지의 특성을 파악하기 위하여 전기비저항 탐사와 함께 시추조사를 실시하였다. 또한, 가축사체 매몰지에서 샘플링한 침출수의 화학적 분석을 실시하였다. 매몰지 내부에서 5측선의 쌍극자 전기비저항 탐사와 3지점의 시추조사를 실시하였으며, 매몰지 주변의 11지점에서 시추조사를 수행하였다. 전기 비저항 탐사에 의하여 수집된 자료를 이용하여 2차원 역산 모델링을 수행하여 매몰지의 특성(크기, 심도, 형태 등)을 평가하였다. 침출수 분석결과, pH는 7.4에서 6.7로 감소하였고, Eh는 -358 mV에서 -48 mV로 변화하였다. 또한, 가축사체 부패에 의하여 용존 이온이 증가하였다. 전기비저항 탐사 자료의 해석결과, 지표에서 심도 8 m 이내에서 최소 <TEX>$0.64{Omega}m$</TEX>의 낮은 비저항값을 가지는 영역이 나타났다. 이 지역의 기반암 위치와 가축사체의 매립 깊이를 고려할 때, 매립지 내부에서는 침출수에 의한 기반암의 오염은 진행되지 않은 것으로 나타났다. 전기비저항 탐사의 결과는 시추조사의 결과와 잘 일치 하였으며, 이는 전기비저항 탐사가 가축매몰지의 특성을 효과적으로 묘사한다는 것을 보여주었다. 본 연구에 의하면, 전기비저항 탐사가 가축사체 매몰지의 현황을 조사하는데 적합한 기술로 판단된다. In this study, an electrical resistivity survey and a drilling investigation were conducted at an animal carcass disposal site. Chemical analysis of leachate collected from the site was also performed (sampling times: May 2011 and June 2012). Five lines of dipole-dipole electrical resistivity surveys were carried out, along with drilling investigations at 3 points within the disposal areas and 11 points near the disposal site. Two-dimensional inverse modeling of the collected resistivity data was performed to evaluate the properties (size, depth, and form) of the disposal site. Leachate analysis showed that pH of leachate decreased from 7.4 to 6.7, while Eh changed from -358 mV to -48 mV over time. In addition, dissolved ions increased due to the progression of carcass decomposition. Results of the electrical resistivity survey indicated that low resistivity zones (minimum value, <TEX>$0.64{Omega}m$</TEX>) existed at a depth of 8 m from the surface. Considering the bedrock location and carcass disposal depth, there was no evidence of bedrock contamination by leachate. The results of the electrical resistivity survey are consistent with those of the drilling investigation, which indicates that electrical resistivity effectively depicted the properties of the disposal site. This study demonstrates that electrical resistivity survey is a suitable technique for investigation of animal carcass disposal sites." @default.
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• W1975358565 date "2012-12-31" @default.
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• W1975358565 title "Characterization of an Animal Carcass Disposal Site using Electrical Resistivity Survey" @default.
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• W1975358565 doi "https://doi.org/10.9720/kseg.2012.4.409" @default.
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