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Journal of the Korean Society of Hazard Mitigation 2003;3(3):165-172.
Published online September 30, 2003.
2002년 루사로 인하여 송천 수위국을 붕괴시킨 이상 홍수량의 규모 결정
유주환, 김주철
Calculation of Abnormality Large Flood Discharge Destroying the Songcheon Stage Guaging Station by the RUSA in 2002th Year
Ju-Hwan Yoo, Joo-Cheol Kim
Abstract
An abnormal storm by the typhoon of RUSA in 2002th year was broken out with tremendous flood demages and inundations on the basin of Chogangcheon located in the upper middle part of Guem river`s upstream. This flood could not be engaged because it was so big that the stage engaging Songcheon station stuck to Songcheon bridge was destroyed by submerging. In this study the quantity of the flood was calculated by use of Manning`s equation and suitable roughness coefficient was suggested.
Key Words: flood discharge; Manning Equation; roughness coefficient; Songcheon stage station
요지
2002년 태풍 루사의 집중호우로 금강 중상류에 위치한 초강천 유역에 막대한 홍수피해와 범람을 동반하였다. 발생한 홍수는 초강천 하류에 위치한 송천교에 부설되어 있는 송천 수위국을 잠식하여 붕괴시킬 정도로 엄청난 유량 규모를 가졌기 때문에 직접 측정할 수 없었다. 이에 본 연구에서는 매닝의 등류 공식을 이용하여 홍수량을 산정함과 더불어 적정한 조도계수를 제시하였다.
핵심용어: 홍수량; 매닝공식; 조도계수; 송천 수위국
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