DOI QR코드

DOI QR Code

Study on the Dividing Capacity of Appropriate Sub-basin for Runoff Analysis

하천유역의 유출해석을 위한 적정소유역 분할수에 관한 연구

  • Published : 2008.02.28

Abstract

The purpose of this study is to examine appropriate sub-basin division numbers that best reflect the hydrological characteristics of the basin so as to propose the criterion for dividing the sub-basin in analyzing flood runoff in the future. The characteristics of flood runoff variations were based on the WMS HEC-1 model, and the area in the upstream of the Dongbyeon water level observatory and the Geum-ho water level observatory was chosen for analysis, and examined the characteristics of the changes in flood runoff. First of all, in the targeted basin, if the sub-basin division number was 4 (that is, the area of the divided sub-basin was about 25% of the total area). Next, as the sub-basin division number gradually increased, the peak rate of runoff increased as well, and in case the sub-basin was not divided, the peak rate of runoff occurred at the earliest time. Given these results, the spatial change characteristics will be best reflected when the sub-basin is divided for analysis of flood runoff in such a way that the area of the divided sub-basin is about 25% of the total area of the basin. However, as these results are based on a limited number (4) of storms, more storm events and other basins need to be included in the review of the sub-basin division methodology.

Keywords

Sub-basin Division;WMS HEC-1;Peak Rate of Runoff;Storm Event

References

  1. 조홍제, 1986, 소유역의 홍수도달시간과 사면길이의 분포특성을 고려한 홍수유출해석, 한국수문학회지, 19(2), 139-148
  2. 이종태, 이상태, 1997, 도시유역에서의 강우 공간분포 및 소유역분할이 유출특성에 미치는 영향, 한국수자원학회논문집, 30(2), 177-191
  3. 안승섭, 조명희, 1999, 지리정보시스템을 이용한 하천유역의 지상학적 특성분석, 한국지리정보학회지, 2(3), 23-34
  4. 안승섭, 정도준, 이병철, 서명준, 2006, 유역분할수에 따른 유출특성응답 변화에 관한 연구, 한국환경과학회 학술발표회 논문집, 15(2), 192-197
  5. 안승섭, 정도준, 임동희, 최경창, 2006, 소유역 분할 수가 홍수유출특성에 미치는 영향, 대한토목학회학술발표회 논문집, 1061-1064
  6. 정정화, 장승표, 김호일, 정연태, 허기술, 박호, 1995, 유출룰 추정을 위한 토양수목군의 분류, 한국농공학회지, 37(6), 12-32
  7. 윤용남, 김형수, 홍창선, 장수형, 1999, 유역모형의 평가를 위한 기준, 대한토목학회논문집, 19(6), 59-62
  8. 한건연, 이창희, 이수현, 2003, GIS자료를 이용한 수문모델링에서의 적정 해상도 도출, 한국수자원학회학술발표회 논문집, 971-974
  9. Zhang W., Montgomery D. R., 1994, Digital elevation model grid size, landscape representation and hydrologic simulations, Water Resources Research, 30(4), 1019-1028 https://doi.org/10.1029/93WR03553