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http://dx.doi.org/10.7843/kgs.2010.26.5.37

Development of the Seepage Flow Monitoring Method by the Hydraulic Head Loss Rate  

Eam, Sung-Hoon (Major of Rural Construction Engrg., Kongju National Univ.)
Kang, Byung-Yoon (Saemangeum Free Economic Zone Project Office, Korea Rural Community Corporation)
Kim, Ki-Wan (Sihwa Tidal Power Plant Construction Dept., Korea Water Resources Corporation)
Koo, Ja-Ho (Water Resources Operation Center, Korea Water Resources Corporation)
Kang, Shin-Ik (Industrial Estate Development Dept., Korea Water Resources Corporation)
Cha, Hung-Youn (Sihwa Tidal Power Plant Construction Dept., Korea Water Resources Corporation)
Jung, Jae-Hyun (Technology Dept., Expert Group For Earth Environment Co., Ltd)
Cho, Jun-Ho (Technology Dept., Expert Group For Earth Environment Co., Ltd)
Kim, Ki-Soo (Technology Dept., Expert Group For Earth Environment Co., Ltd)
Publication Information
Journal of the Korean Geotechnical Society / v.26, no.5, 2010 , pp. 37-48 More about this Journal
Abstract
In this study, the seepage flow monitoring method by the hydraulic head loss rate was developed for the purpose of application to offshore construction site enclosed by cofferdams in which seepage force varies periodically. The amount of the hydraulic head loss rate newly defined in this graph was in a range between 0 and 1. The zero of the rate means the existence of flow with no seepage resistance. The 1 of the rate means no seepage flow through the ground. The closer to 1 the coefficient of determinant in the hydraulic head loss graph is, the more the ground through which seepage water flows is stable. The closer to 0 the coefficient of determinant in the hydraulic head loss graph is, the more the ground through which seepage water flows was unstable and the higher the possibilities of existence of empty space or of occurrence of piping on the seepage flow pass in the ground is. The hydraulic head loss graph makes it possible to monitor sensitively the situation of seepage flow state, and the graph helps to understand easily the seepage flow state at the specific section on the whole cofferdam.
Keywords
Cofferdam; Hydraulic head loss; Pore water pressure; Seepage monitoring; Tidal movement;
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  • Reference
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