• Regional Groundwater Flow Characteristics due to the Subway System in Seoul, Korea
  • Shin, Esther;Kim, Hyoung-Soo;Ha, Kyoochul;Yoon, Heesung;Lee, Eunhee;
  • Dept. of Renewable Energy, Jungwon University;Dept. of Renewable Energy, Jungwon University;Korea Institute of Geoscience and Mineral Resources;Korea Institute of Geoscience and Mineral Resources;Korea Institute of Geoscience and Mineral Resources;
  • 지하철에 의한 서울특별시 광역 지하수 유동 특성
  • 신에스더;김형수;하규철;윤희성;이은희;
  • 중원대학교 신재생에너지학과;중원대학교 신재생에너지학과;한국지질자원연구원 지구환경본부 지하수연구실;한국지질자원연구원 지구환경본부 지하수연구실;한국지질자원연구원 지구환경본부 지하수연구실;
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;

This Article

  • 2015; 20(3): 41-50

    Published on Jun 30, 2015

  • 10.7857/JSGE.2015.20.3.041
  • Received on Feb 24, 2015
  • Revised on Apr 13, 2015
  • Accepted on May 18, 2015

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