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http://dx.doi.org/10.7857/JSGE.2015.20.3.041

Regional Groundwater Flow Characteristics due to the Subway System in Seoul, Korea  

Shin, Esther (Dept. of Renewable Energy, Jungwon University)
Kim, Hyoung-Soo (Dept. of Renewable Energy, Jungwon University)
Ha, Kyoochul (Korea Institute of Geoscience and Mineral Resources)
Yoon, Heesung (Korea Institute of Geoscience and Mineral Resources)
Lee, Eunhee (Korea Institute of Geoscience and Mineral Resources)
Publication Information
Journal of Soil and Groundwater Environment / v.20, no.3, 2015 , pp. 41-50 More about this Journal
Abstract
Hydrogeologic environment of the Mega City such as Seoul, suffers from rapid changes caused by urbanization, construction of underground subway or buildings, and contaminant loading by diverse anthropogenic activities. Understanding the present condition of groundwater environment and water budget is necessary to prevent natural and manmade disasters and to prepare for sustainable water resource management of urban environment. In this study, regional groundwater flow and water budget status of Seoul was analyzed using numerical simulation. Modeling result indicated that groundwater level distribution of Seoul generally followed the topography, but the significant decreases in groundwater level were observed around the subway network. Steady-state water balance analysis showed groundwater recharge by rainfall and leakage from the water supply network was about 550,495 m3/day. Surface water inflow and baseflow rate via Han River and major streams accounted for 799,689 m3/day and 1,103,906 m3/day, respectively. Groundwater usage was 60,945 m3/day, and the total groundwater leakage along the subway lines amounted to 114,746 m3/day. Modeling results revealed that the subway could decrease net groundwater baseflow by 40%. Our study result demonstrated that the subway system can have a significant influence on the groundwater environment of Seoul.
Keywords
Seoul; Subway; Groundwater budget; Regional flow; Numerical model;
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  • Reference
1 Woo, J.T., 2009, A study on comparison of a ground water influx quantity in Seoul subway tunnel, Tunnel. Tech., 11(4), 353-359.
2 Kim, Y.Y., Lee, K.K., and Sung, I.H., 1998, Groundwater system in Seoul area: analysis of hydraulic properties, J. Eng. Geol., 8(1), 51-73.
3 Kim, Y.Y. and Lee, K.K., 1999, GIS application to urban hydrogeological analysis of groundwater system in Seoul area, J. GIS Assoc. Korea, 7(1), 103-117.
4 Kim, Y.Y., Lee, K.K., and Sung, I.H., 2001, Urbanization and the groundwater budget, metropolitan Seoul area, Korea, Hydrogeol. J., 9, 401-412.   DOI
5 KIGAM (Korea Institute of Geoscience and Mineral Resources), 2014, Establishment of groundwater management plan for Seoul metropolitan city, Korea Institute of Geoscience and Mineral Resources, 491 p.
6 KMA (Korea Meteorological Administration), 2014, Climate data (2011-2013), www.kma.go.kr. (Cited 12 Jan 2015).
7 KOSIS (Korea Statistical information service), 2014, Population census, www.kosis.kr. (Cited 12 Jan 2015).
8 Chung, S.Y., 2010, Groundwater obstructions and countermeasures for groundwater discharge from subway in Seoul, Korea, J. Geol. Soc. Korea, 46(1), 61-72.
9 Lee, B.S. and Woo, N.C., 2002, Groundwater quality and contamination in the 'A' section of Seoul metropolitan subway, J. Eng. Geol., 12(4), 379-394.
10 Lee, J.Y. and Koo, M.H., 2007, A review of effects of land development and urbanization on groundwater environment, J. Geol. Soc. Korea, 43(4), 517-528.
11 Ministry of environment, 2012, 2011 Statistics of waterworks, Ministry of environment, 57 p.
12 Diersch, H.J.G., 2010, FEFLOW 6 - User's manual, WASY GmbH, Berlin. 172 p.
13 WAMIS (Water Management Information System), 2014, www.wamis.go.kr. (Cited 12 Jan 2015)