방조제 이질층의 투수성이 제체 침투에 미치는 영향에 대한 모의 분석 = Simulation of Effects of Permeability on Seepage between Two Heterogeneous Layers of Sea-dike

다국어 초록 (Multilingual Abstract)

A simulation was done to analyze the seepage problems due to seawater intrusion through the embedded rock layers on heterogeneous layers of sea-dike. Numerical analysis with SAMTLE(developed by author) was done by taking various relative permeability $ratio(R_r/R_e)$. These results showed, when the sed-dike is newly designed, operated, and maintained considering the safety of sea-dike in seepage problems, these embankment materials are prudently chosen. The permeability of the soil materials, within the range of salinity management in freshwater, is comparatively high, however, the permeability of rock materials for bottom rock layer is low. Therefore, when the relative permeability $ratio(R_r/R_e)$ is bellow 10 it is safety in seepage problems of sea-dike.

참고문헌 (Reference)

1 "Tideland Reclamation in Korea." Rural Development Corporation, 1995

2 "Simulation of Effects of the Size of Embedded Rock Layer un-der soil Fill on Seepage Problems of Sea-dike" 48 (48): 81-88, 2006

3 "Seepage Problems due to Seawater Intrusion through Embedded Rock Layer of Sea dyke" 4th International Workshop on Sustainable Development of Tidal Areas International Commission on Irrigation and Drainage 137-139, 2005b

4 "Seepage Characteristics of Sea Dike depending on the Size and Permeability of Embedded Rock Layer under soil Fill" Seoul National University. 2005

5 "Seepage Characteristics of Embedded Rock Layer Under the soil Fill" 21 (21): 55-61, 2005c

6 "Seepage Characteristics of Embankment with or without Gravel Layer under the soil Fill" 47 (47): 53-61, 2005

7 "Relationship for non-Darcy flow in rockfill." 124 (124): 206-212, 1998

8 "Estimating flow through riprap. Journal of Hydraulic Engineering" 670-675, 1991

9 "Development and Application of Seepage Analysis Model of Two-Layer Embankment (SAMTLE)" 25 (25): 353-359, 2005a

10 "Conversion between quadratic and power law for non-Darcy flow. Journal of Hydraulic Engineering" 792-797, 1992

11 "A Study on the Method of Preventing Piping for the Hwaong Seadike." Ministry of Agriculture & Forestry and Korea Agricultural & Rural Infrastructure Corporation 2002