All Issue

2018 Vol.38, Issue 6 Preview Page
December 2018. pp. 819-829
Abstract
The bed change survey was carried out and its tendency was analyzed at the downstream of the Singok Submerged Weir in the Han River Estuary (HRE). In order to focus on the bed change in the low flow channel, we calculated the mean bed elevation based on the bankfull discharge. Thanks to the amount of bed changes calculated by using the 'averaged bed', we could compare the riverbeds of various periods with consistent criteria. In the HRE, revealed was the bed change cycle between degradation by flood and aggradation by tide at the non-flood season.
한강 하구 신곡수중보 하류에서 하상변동 조사를 실시하고 평균 하상고와 하상변동량을 계산하여 하상변동 경향에 대해 검토하였다. 저수로 하상변화에 초점을 맞추기 위해 부등류 계산을 통한 시행착오법으로 ‘저수로 만제 유량’을 설정하여 평균 하상고를 산정하였다. ‘평균 하상’을 기준으로 계산된 하상변동량 덕분에 여러 시기 하상을 일관된 기준으로 비교할 수 있었다. 한강 하구에서 하상변동 경향은 홍수에 따른 저하와 비홍수기 조석에 따른 상승의 순환으로 드러났다.
References
  1. Han River Flood Control Office (HRFCO) (2018). Realtime hydrologic data – stage data, Available at: http://hrfco.go.kr (Accessed 21 May 2018) (in Korean).
  2. Hwang, S.-Y., Lee, S. H. and Park, J. M. (2007). “Influence of floods and tides on the bed changes in the han river estuary.” Proc. 2007 KSCE Conf., KSCE, pp. 4149-4152 (in Korean).
  3. Kim, C. Y. and Yoon, K. S. (2003). “Morphological change studies of the lower Han River using the past bathymetry profiles.” Proc. 2003 KSCE Conf., KSCE, pp. 1931-1936 (in Korean).
  4. Korea Institute of Civil Engineering and Building Technology (KICT) (2002). Analysis of bed changes in the lower Han River (in Korean).
  5. Korea Water Resources Association (KWRA) (2009). River design criteria and guidelines (in Korean).
  6. Ministry of Construction and Transportation (MOCT) (2002). Master plan for river maintenance in the Han River system - Supplements (in Korean).
  7. Ministry of Land, Infrastructure and Transport (MOLIT) (2014). List of rivers in Korea (in Korean).
  8. Ministry of Land, Transport and Maritime Affairs (MLTM) (2008). 2006-2008 Research report on bed changes in the lower Han River (in Korean).
  9. MLTM (2009). 2009 Research report on bed changes in the lower Han River (in Korean).
  10. MLTM (2010). 2010 Research report on bed changes in the lower Han River (in Korean).
  11. MOCT (2005). Research report on bed changes in the lower Han River (in Korean).
  12. MOCT (2007). 2006 Korea annual hydrological report (in Korean).
  13. MOLIT (2016). 2016 Korea annual hydrological report (in Korean).
  14. Oh, Y. M., Hwang, S.-Y. and Kim, S. E. (2003). “Measurement of turbidity and current at Han River downstream.” Proc. 2003 KWRA Conf., KWRA. pp. 851-854 (in Korean).
Information
  • Publisher :Korean Society of Civil Engineers
  • Publisher(Ko) :대한토목학회
  • Journal Title :JOURNAL OF THE KOREAN SOCIETY OF CIVIL ENGINEERS
  • Journal Title(Ko) :대한토목학회 논문집
  • Volume : 38
  • No :6
  • Pages :819-829