부산신항 용원수로에서의 퇴적물 준설에 의한 용출특성 변화 연구 KCI

Title
부산신항 용원수로에서의 퇴적물 준설에 의한 용출특성 변화 연구
Alternative Title
A Study on Leaching Characteristics Change for Sediment Dredging in Yongwon Channel, Busan New Port
Author(s)
추민호; 김영도; 정원무
KIOST Author(s)
Jeong, Weon Mu(정원무)
Publication Year
2017-06
Abstract
In Yongwon channel, its natural flow of seawater is blocked by the construction of Busan Newport including the container berth. The channel was transformed into a narrow and long one, where it is possible that ships are only allowed to pass through the north-side channel of Gyeonmado located at the point of river mouth to Songjeongcheon. So it is considered that the changes in the terrain characteristics of Yongwon channel is likely to alter the circulation of sea water, thereby changing its water quality. Contaminants are accumulated from the sediment release. In this study, before and after dredging the sediment release test was performed. As a result, after the sediment dredging is performed, the reduction rate was higher at the same point. The results show that the water quality can be improved by dredging. Each group (A~C) reduction rate of the evaluation of the reduction rate of 4.64% T-N, 18.00%, 18.59%, respectively. T-P rate of 24.75% reduction, 24.17%, 44.08%, respectively. COD reduction rate was 18.57%, 19.76%, 38.08%, respectively. These results can be used as basic data for controlling the contamination by dredging in Yongwon channel.

용원해역은 부산신항 개발사업의 일환으로 추진된 북컨테이너부두 조성사업 및 항만 배후단지 조성사업으로 전면 해역이 매립되어 원활한 해수흐름이 차단되고 송정천 하구 지점의 견마도 북쪽 통로를 이용한 선박이동만이 가능한 좁고 긴 수로형태로 변형되었다. 따라서 용원수로에 유입되는 오염물질은 수로에 체류되어 서서히 확산되는 양상을 보일 것으로 판단된다. 본 연구에서는 용원수로 내 준설 전․후 퇴적토 용출실험을 실시한 결과 준설 후에 용출농도가 낮게 나타났으며, 그룹별(A~C) 삭감률을 산정한 결과 T-N의 삭감률은 4.6%, 18.0%, 18.6%로 나타났다. T-P의 삭감률은 24.8%, 24.2%, 44.1%로 나타났다. COD의 삭감률은 18.6%, 19.8%, 38.1%로 용원수로 내 준설 후 수질개선의 효과가 나타났으며, 준설을 통한 용원수로 내 오염원을 제어하기 위한 기초자료로 활용하고자 한다.
ISSN
1015-6348
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1215
DOI
10.12652/Ksce.2017.37.3.0541
Bibliographic Citation
대한토목학회논문집(국문), v.37, no.3, pp.541 - 547, 2017
Publisher
대한토목학회
Keywords
퇴적물 용출; 수질; 용원수로; 퇴적토 준설; Sediment release; Water quality; Yongwon channel; Sediment dredging
Type
Article
Language
Korean
Publisher
대한토목학회
Related Researcher
Research Interests

wave data analysis & wave numerical simulation,coastal engineering,파랑자료 분석 및 수치실험,해안공학

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