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2019 Vol.6, Issue 1 Preview Page

Original Article

Analysis of Water Circulation Characteristics for Hydraulic and Water Temperature Investigation in Paldang Reservoir

팔당호의 수리 및 수온 조사를 통한 물순환특성 분석

Hwang Jeong Choi1
,
Yong-Chul Cho1
,
Soonju Yu1
,
Yong Sik Song2
,
Ingu Ryu1*
최 황정1
,
조 용철1
,
유 순주1
,
송 용식2
,
류 인구1*
1Han River Environment Research Center, National Institute of Environmental Research, Gyeonggi-Do 12585, Korea
2Research and Development Institute, GeoSystem Research Corporation, Gyeonggi-Do 15807, Korea
1국립환경과학원 한강물환경연구소
2(주)지오시스템리서치 부설연구소
* Corresponding Author
31 March 2019. pp. 12-22
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Abstract

This study investigated the spatial and temporal water circulation characteristics of Paldang Reservoir by continuous hydraulic and water temperature survey. Due to differences in water temperature and discharge pattern of Ipo Weir and Cheongpyeong Dam, the flow and temperature fluctuations were different in sections of Namhan River and Bukhan River in Paldang Reservoir. At the stratification period, the water temperature of the discharge of Ipo Weir was higher than that of the Cheongpyeong Dam. Therefore, in the surface layer of the downstream of Bukhan River, relatively high temperature water is located and back water phenomenon occurred, and convergence zone is formed. In the downstream section of Namhan River, low-temperature water was distributed in the middle and lower layers, and the upstream flow appeared to be difficult to mix with the surface layer.

Keywords
Back water
Paldang Reservoir
Two-layer flow
Water circulation
Water temperature

본 연구에서는 팔당호 내 주요지점에서 수심별 연속 수리 및 수온 조사를 수행하여 팔당호의 시공간적 물순환 특성을 파악하고자 하였다. 이포보와 청평댐에서의 수온 및 방류 패턴의 차이로 인하여 팔당호 내 북한강 및 남한강 구간에서의 흐름 및 수온 변동특성이 상이하게 나타났다. 수직혼합기에는 북한강과 남한강 구간의 전 층에서 하류방향 흐름이 우세하게 나타났다. 성층형성기에 이포보 방류수의 수온이 청평댐 방류수의 수온보다 높았으며, 이로 인해 북한강 하류 구간에서 표층은 상대적으로 고온수가 위치하여 상류방향 흐름으로 배수 현상이 나타나고 수렴대가 형성되었다. 남한강 하류 구간은 중층과 저층에서 저온수가 분포하여 상류방향 흐름이 나타나고 표층과 혼합되기 어려운 이층류 구조를 나타내었다.

키워드
배수
팔당호
이층류
물순환
수온
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Information
  • Publisher :Korean Society of Ecology and Infrastructure Engineering
  • Publisher(Ko) :응용생태공학회
  • Journal Title :Ecology and Resilient Infrastructure
  • Journal Title(Ko) :응용생태공학회 논문집
  • Volume : 6
  • No :1
  • Pages :12-22
  • Received Date : 2019-03-12
  • Revised Date : 2019-03-14
  • Accepted Date : 2019-03-14
  • DOI :https://doi.org/10.17820/eri.2019.6.1.012
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