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Estimation of the hydraulic conductivity profile in fractured rocks using the borehole flowmeter test  

구민호 (공주대학교 지질환경과학과)
차장환 (농업기반공사 농어촌연구원)
Publication Information
The Journal of Engineering Geology / v.12, no.3, 2002 , pp. 257-271 More about this Journal
Abstract
The vertical distribution of hydraulic conductivity of 3 boreholes located at Kongju National University was estimated by the ambient flow and the pump-induced flow measurements using a heat-pulse flowmeter. The ambient flow measurements showed that a great amount of groundwater (1~2 m$^3$/day) flowed in the boreholes through the conductive fractures. The analyzed conductivity profiles we similar to those of the packer test performed for the same boreholes. The conductive fractures in which the differential net flow changed greatly could be identified by the BIPS logging. The water-quality logging data showed that quality of groundwater changed abruptly at some depths of the boreholes. This change in water quality can be attributed to the presence of conductive fractures that have resulted in the mixing of groundwater of different quality flowing in different fracture channels. However, compared to the flowmeter test, the water-quality logging showed low capability in identifying locations of conductive fractures.
Keywords
borehole flowmeter; ambient flow; pump-induced flow; hydraulic conductivity; bedrock aquifer;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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[ Young, S.C.;Julian, H.E.;Pearson, H.S.;Molz, F.J.;Boman, G.K. ] / Application of the electromagnetic borehole flowmeter
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[ Mercer, J.W;Skipp, D.c;Griffin, D ] / Basics of pump-and-theat remediation technology
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[ Paillet, F.L. ] / Water Resource Research   DOI
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[ Hvorslev, M.J ] / Time lag and soil permeability in ground water obersvations
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[ Rund, N.C.;Kabala, Z.J. ] / J. Hydrol   DOI   ScienceOn
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