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토지이용변화에 따른 제주도 도심하천의 홍수유출 변동 분석

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Author(s)
고광효
Issued Date
2014
URI
http://dcoll.jejunu.ac.kr/jsp/common/DcLoOrgPer.jsp?sItemId=000000006982
Abstract
For the Hancheon basin of Jeju island, flood soil outflow by change in land use and event of heavy rain were analyzed as 5-year cycle from 1980 to 2005, and the effects of the change in land use on flood outflow amount were examined.
From 1980 to 2005, the urban area and agriculture cultivation area of Hancheon basin in Jeju island have increased 5 times, and 28% forest area has decreased. As a result of analyzing the outflow coefficient by utilizing land cover data and soil statistical data, averagely 2.2% outflow coefficient has increased in every 5-year cycle, particularly 11.6% in 2005 to 1980. Results of flood outflow change analysis in each heavy rain event with regard to the change in land use indicated that peak flowrate has increased 9.9 to 33.67%, while outflow total amount is 12.53 to 30.21%, and the arrival time of peak flowrate has decreased by 10 minutes in each heavy rain event.
It was confirmed quantitatively that land use of Hancheon basin in Jeju Island switched from forest area to urban area and agriculture cultivation area, and the amount of flood outflow increased.
Alternative Title
Flood Discharge Analysis on Land Use Changes in Urban Stream of Jeju Island
Department
산업대학원 건설환경공학과
Awarded Date
2015. 2
Table Of Contents
Ⅰ. 서론 1
1. 연구의 배경 1
2. 연구의 목적 2
3. 연구의 동향 2

Ⅱ. 연구방법 및 이론적 배경 4
1. 연구방법 4
2. 이론적 배경 6
2.1 HEC-HMS 모형 6
2.2 유역평균강우량 8
2.3 NRCS-CN 유효우량 12
2.4 합성단위도법 17
2.5 하도추적 25

Ⅲ. 연구대상유역 및 토지피복자료 구축 32
1. 연구대상유역 32
1.1 유역의 형상 및 지형적 특성 33
1.2 유역의 표고 및 경사분석 33
2. 적용 호우사상 및 유역평균강우량 36

Ⅳ. 결과 및 고찰 41
1. 한천유역의 토지이용변화 41
1.1 토지이용변화 분석 41
1.2 토지이용에 따른 유출계수 산정 44
2. 토지이용변화에 따른 홍수유출량 변동 49
2.1 매개변수 최적화 49
2.2 토지이용변화에 따른 홍수유출 변동 분석 53


Ⅴ. 결론 59

참고문헌 64

감사의 글 67
Degree
Master
Publisher
제주대학교 산업대학원
Citation
고광효. (2014). 토지이용변화에 따른 제주도 도심하천의 홍수유출 변동 분석
Type
Dissertation
Appears in Collections:
Graduate School of Industry > Environmental Engineering
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