Transcript HEC-HMS
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
Precipitation.
describes atmospheric conditions over the watershed land surface.
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
Subbasin
Hydrologic Elements
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
Routing methods: Kinematic wave Lag Modified Puls Muskingum Muskingum-Cunge Straddle stagger Loss/gain methods: Constant.
Percolation.
Reach
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