한국지구물리탐사학회:학술대회논문집
- 1999.08a
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- Pages.240-257
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- 1999
Application of Geophysical Exploration Methods to Seepage Bone Investigation of Dam Structures
제방누수조사에의 물리탐사기법의 활용(쌍극자배열 전기비저항탐사와 SP탐사를 중심으로)
- Won Jong-Geun (Rural Development Corporation) ;
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Song Sung-Ho
(Rural Development Corporation)
- Published : 1999.08.01
Abstract
More than 16 percent of the total 18,032 reservoirs over the country were reported to have leakage problems and need to be improved. Recently, a great deal of progress was made in geophysical survey techniques, particularly in electrical resistivity, and the techniques are used for variety of Purposes in groundwater and dam management due to its economical advantages. This document describes the re-evaluation of existing resistivity data including newly surveyed data, mapping of modeled value in 2-D analysis to locate seepage pathways, This contains also discussion results of more than eighteen years of professional experiences in the field of dam efficiency improvement. In comparison of surface resistivity data with several soil analysis data in laboratory, it is evident that the surface resistivity value shows a qualitative proportionality with the sand contents of the filling materials in earth dam. The result from the study also indicates that the SP method in subsurface investigation is effective to detect seepage in earth filled dam as well as piping through rock/earthfill dike.
우리나라의 저수지 총수 18,032 개소의
Keywords