1. HEC-HMS
담당교수명 : 서 영 민
연 락 처 :

2. Part 1: HEC-HMS 개요

3. HEC-HMS 개요 개요 적용범위 - Hydrologic Modeling System (HMS)
- 미육군공병단 (USACE)의 수문공학센터 (Hydrologic Engineering Center, HEC)
에서 개발한 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

8. Application Steps Step 1. 새로운 프로젝트 생성 Step 2. 공유 프로젝트 자료 입력

9. Program Screen

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

11. Basin Map
Sub-basin
Channel
Junction
Outlet

12. Component Editor

13. Component Data

14. 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

15. Hydrologic Element

16. Precipitation Methods

17. Control Specifications
모의시간 및 간격 설정

18. Simulaton
Results

19. End of Part I

20. Part 2: 주요 구성요소

21. 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

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

23. 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

24. 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

25. 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

26. Reach Routing methods: Loss/gain 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

27. Reservoir Routing methods: Possible structures: 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

28. Precipitation Historical methods: Hypothetical 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

29. 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

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

31. End of Part II