HEC-HMS2012.10.10

담당교수명 : 서 영 민연 락 처 : elofy@naver.com 010-2507-7107

Part 1: HEC-HMS 개요

HEC-HMS 개요개요- 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 포함적용범위 - 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/

Step 1. 새로운 프로젝트 생성Step 2. 공유 프로젝트 자료 입력Step 3. 유역자료 입력 및 설정Step 4. 기상자료 입력 및 설정Step 5. 모의기간 및 시간간격 설정Step 6. 모의실행 및 결과 검토Step 7. 자료 수정 및 생성Step 8. 추가 모의 및 결과 비교

Application Steps

Program Screen

Watershed Explorer

Basin ModelsMeteorologic ModelsControl SpecificationsTime-Series DataPaired Data

Basin Map

Sub-basin

Channel

Junction

Outlet

Component Editor

Component Data

Hydrologic Element

소유역 유출량강우 및 손실기저유출( 유역추적 및합성단위도법 )

하도유출하도손실( 하도추적 )

수문요소연결

No inflowOutflow 설정No outflowInflow 만 존재저수지 설정( 저수지 추적 )

흐름전환

Hydrologic Element

Precipitation Methods

Control Specifications

모의시간 및 간격 설정

SimulatonResults

End of Part I

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 wa-tershed 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 ElementsSubbasin

유역면적강우손실

( 합성 ) 단위도기저유출

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

End of Part II