HEC-HMS

Report
HEC-HMS
2012.10.10
담당교수명 : 서 영 민
연 락 처 : [email protected]
010-2507-7107
Part 1: HEC-HMS 개요
HEC-HMS 개요
개요
- 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
http://www.hec.usace.army.mil/
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
Program Screen
Watershed Explorer
Basin Models
Meteorologic Models
Control Specifications
Time-Series Data
Paired Data
Basin Map
Sub-basin
Channel
Junction
Outlet
Component Editor
Component Data
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
Hydrologic Element
Precipitation Methods
Control Specifications
모의시간 및 간격 설정
Simulaton
Results
Part 2: 주요 구성요소
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
Hydrologic Elements
Subbasin
유역면적
강우손실
(합성)단위도
기저유출
Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS
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
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
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
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
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
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
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
Snowmelt
 Temperature index
method.
 Subbasin band approach.
 Gridded approach.
Ref.) Bill Scharffenberg (2008). Introduction to HEC-HMS, Workshop on Watershed Modeling with HEC-HMS

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