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중규모 유역에서 Clark 방법과 ModClark 방법을 이용한 유출해석 시적정 소유역 분할 개수에 대한 연구
이동훈,최종인,신수훈,이재응,Lee, Donghoon,Choi, Jongin,Shin, Soohoon,Yi, Jaeeung 대한토목학회 2013 대한토목학회논문집 Vol.33 No.1
본 연구에서는 강우-유출 모형을 이용하여 소유역 분할에 따른 유출변화 특성을 파악한 후 다수의 시험유역에 대해 적합한 소유역 분할개수를 제시하였다. 강우-유출과정을 모의하기 위하여 HEC-HMS 내의 집중형 모형인 Clark 방법과 준분포형 모형인 ModClark 방법을 시험유역인 안동댐, 임하댐 및 평창강의 3개 유역에 적용하였다. 각각의 시험유역에 대하여 1개, 3개, 5개, 6개, 7개, 9개, 10개, 12개, 15개의 9가지 case로 등면적 분할을 하였으며, 모의된 첨두유량과 첨두시간을 실제 관측된 수문곡선과 비교 분석하였다. 시험유역에 대한 소유역 분할에 따른 유출모의 결과 소유역 분할 수가 증가할수록 첨두유량은 증가하였고 첨두시간은 짧아졌으며 이러한 경향은 일정 분할개수 이후 급격히 감소하는 것으로 나타났다. 본 연구에서는 이러한 경향이 감소하기 시작하는 소유역 분할 수를 최소분할개수로 나타내었으며, 첨두유량 및 첨두시간을 종합적으로 고려하였을 때 안동댐 및 임하댐 유역은 최소분할개수가 5개, 평창강 유역은 7개로 분석되었다. In this study, flood runoff characteristics is analyzed according to subbasin divisions by physically based rainfall-runoff model and appropriate number of subbasin divisions is suggested for midsize test basins. The Clark method, a lumped model in HEC-HMS, and the ModClark method, a semi-distributed model are used to simulate rainfall-runoff processes on Andong-reservoir basin, Imha-reservoir basin, and Pyeongchang river basin. The test basins were divided into nine subdivision cases by equal-area subdivision method such as single basin, 3, 5, 6, 7, 9, 10, 12, and 15 subbasins, and compared the simulated and observed values in terms of the peak flow and the peak time. The simulation results indicated that the peak flows tended to increase and the peak time shifted earlier as the number of subdivisions increased and this tendency weakened after the certain number of subdivisions. In this research, the specific number of subdivision was defined as the minimum number of subdivision considering both peak flow and peak time. Consequently, the minimum number of subdivisions is determined as 5 for Andong and Imha reservoir basins and 7 for Pyeongchang river basin.
길찾기 좋은 서울(Legible Seoul)을 위한 전략
여혜진(Hae Jin Yeo),이동훈(Donghoon Lee),이창(Chang Yi),전혜선(Hae Sun Chun),서선영(Sunyoung Seo) 서울연구원 2011 서울연구원 정책과제연구보고서 Vol.- No.-
This study aims to explore problems of the way-finding system of Seoul subway station. In case of Seoul, there has been many problems of losing a way, looking around, going on a bootless errand, going back, asking and so forth for subway users whether they are foreigners or not. Specifically focused on four densely-used subway stations which are Seoul Station, City Hall Station, Express Bus Terminal Station, Myeong-dong Station, the research arguments are developed through site visit, investigation and analysis, discussion meeting and interviews. Investigating the real condition of signs in four subway stations, 3 types of problems are determined. The most serious problem is that the signs is not working as a way-finding system at the level of transfer guide, way-out and upper space guide, and circulation decision point guide. These problems are mostly driven because of failing to properly locate the sign and to provide the necessary level of information detail. The reason of those problems I examined from the point of planning process, production structure, and finally organization. In overall, the production of subway signs pre-empt sign system planning as well as subway sign manual do subway design guideline. Also the subway sign guideline and manual have not been developed based on behavioral and cognitive study, so it does not have any exact measuring standard and human scale to locate the signs. Policy implication is to suggest a supplementation of subway sign guideline and manual based on user’s behavioral and cognitive characteristics, integrating interagency for better quality control of way-finding system, and several demonstration projects to improve sign system and remodeling projects.