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HEC-HMS

HEC-HMS. 2012.10.10. 담당교수명 : 서 영 민 연 락 처 : elofy@naver.com 010-2507-7107. Part 1: HEC-HMS 개요. HEC-HMS 개요. 개요 - Hydrologic Modeling System (HMS) - 미육군공병단 (USACE) 의 수문공학센 터 (Hydrologic Engineering Center, HEC) 에서 개발한 강우 - 유출해석 프로그램

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HEC-HMS

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  1. HEC-HMS 2012.10.10 담당교수명: 서 영 민 연 락 처 : elofy@naver.com 010-2507-7107

  2. Part 1: HEC-HMS 개요

  3. HEC-HMS 개요 개요 - Hydrologic Modeling System (HMS) - 미육군공병단 (USACE)의 수문공학센터(Hydrologic Engineering Center, HEC) 에서개발한 강우-유출해석 프로그램 - 기존 HEC-1 (DOS 버전)의 대체 버전 (Windows 버전) - 유효강우산정, 합성단위도, 하도추적 등 포함 - 격자형 강우자료 (레이더)를 이용한 준분포형 모형 포함 - 장기유출모의를 위한 간단한 토양수분모형 포함 적용범위 - 강우-유출 해석을 통한 홍수피해 감소 - 댐 안전에 대한 여수로 타당성 - 저수지 설계 및 운영 - 홍수예경보 - 홍수터 관리 - 환경복원 등

  4. http://www.hec.usace.army.mil/

  5. Application Steps Step 1. 새로운 프로젝트 생성 Step 2. 공유 프로젝트 자료 입력 Step 3. 유역자료 입력 및 설정 Step 4. 기상자료 입력 및 설정 Step 5. 모의기간 및 시간간격 설정 Step 6. 모의실행 및 결과 검토 Step 7. 자료 수정 및 생성 Step 8. 추가 모의 및 결과 비교

  6. Program Screen

  7. Watershed Explorer Basin Models Meteorologic Models Control Specifications Time-Series Data Paired Data

  8. Basin Map Sub-basin Channel Junction Outlet

  9. Component Editor

  10. Component Data

  11. Hydrologic Element 소유역 유출량 강우 및 손실 기저유출 (유역추적 및 합성단위도법) 하도유출 하도손실 (하도추적) 수문요소연결 No inflow Outflow 설정 No outflow Inflow만 존재 저수지 설정 (저수지 추적) 흐름전환

  12. Hydrologic Element

  13. Precipitation Methods

  14. Control Specifications 모의시간 및 간격 설정

  15. Simulaton Results

  16. End of Part I

  17. Part 2: 주요 구성요소

  18. Main Components • Basin model gives the physical description of the watershed. • Subbasin: watershed catchments where rain falls. • Reach: rivers and streams. • Reservoir: dams and lakes. • Junction: confluence. • Diversion: bifurcations and withdrawls. • Source: springs and other model sinks. • Sink: outlets and terminal lakes. • Meteorologic model describes atmospheric conditions over the watershed land surface. • Precipitation. • Potential evapotranspiration. • Snowmelt. • Control specifications: Time control during a simulation run. Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  19. Hydrologic Elements Subbasin 유역면적 강우손실 (합성)단위도 기저유출 Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  20. Subbasin Infiltration • Loss rate methods: • Deficit constant. • Exponential. • Green Ampt. • Gridded deficit constant. • Gridded SCS. • Gridded SMA. • Initial constant. • SCS curve number. • Smith Parlange. • Soil moisture accounting. Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  21. Subbasin Surface Runoff • Unit hydrograph methods: • Clark. • SCS. • S-graph. • Snyder. • User-specified. • Other methods: • Kinematic wave. • ModClark distributed. Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  22. Subbasin Baseflow • Baseflow methods: • Bounded recession. • Linear reservoir. • Monthly constant. • Nonlinear Boussinesq. • Recession. Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  23. Reach • Routing methods: • Kinematic wave • Lag • Modified Puls • Muskingum • Muskingum-Cunge • Straddle stagger • Loss/gain methods: • Constant. • Percolation. Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  24. Reservoir • Routing methods: • Storage curve. • Outlet structures. • Specified release. • Possible structures: • Gated spillway (0 to 10). • Overflow (0 to 10). • Outlet (0 to 10). • Pump (0 to 10). • Dam break (0 or 1). Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  25. Precipitation • Historical methods: • Gage weights. • Inverse distance. • User-specified. • Gridded. • Hypothetical methods: • Frequency storm. • SCS storm. • Standard project storm. Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  26. Evapotranspiration • Available methods: • Gridded Priestley-Taylor. • Monthly average. • Priestley-Taylor. Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  27. Snowmelt • Temperature index method. • Subbasin band approach. • Gridded approach. Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

  28. End of Part II

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