摘要
围填海工程会对生态环境造成诸多影响,引起周边海域水动力的变化,对水体交换能力和水质产生影响。小干岛位于舟山本岛的东南海域,为解决小干岛围填海历史遗留问题,实现生态修复目标,本文利用平面二维水流数学模型Mike21计算了现状条件和不同生态修复方案下的水体交换差异。结果表明,所有方案均能达到修复小干岛南北两侧水体交换和增强围区内部水动力的目标;不同方案下的围区内换水周期均有所缩短,3号和4号水域尤为明显;各方案产生的差异主要在1号水域,修复方案一、方案二、方案三高潮位起始的90%换水周期分别为11.9、12.7、12.1 h,低潮位变化较小,分别为5.2、5.1、5.1 h。
The sea reclamation will have many impacts on the ecological environment and cause changes in the hydrodynamics of the surrounding sea area,which will affect the water exchange capacity and water quality.Xiaogan Island is located in the southeast coast of Zhoushan Island.In order to solve the historical problems of sea reclamation on Xiaogan Island and achieve the goal of ecological remediation,this paper uses the plane two-dimensional water flow mathematical model Mike21 to calculate the difference of water exchange under the current conditions and different ecological remediation schemes.The results show that all the schemes can achieve the objectives of water exchange between the north and south sides of Xiaogan Island and enhance the internal hydrodynamics of the enclosure;the water exchange cycles within the enclosure under different schemes are shortened,especially in Waters 3 and 4;the differences among the schemes are mainly in Waters 1,where the 90%water exchange cycles at the beginning of the high tide of schemes 1,2 and 3 are 11.9,12.7,and 12.1 h,respectively.The low tide levels changed less,5.2,5.1,and 5.1 h,respectively.
作者
陈相宇
刘宣汝
龚倩
张希疆
倪云林
范一帆
CHEN Xiang-yu;LIU Xuan-ru;GONG Qian(School of Marine Engineering Equipment of Zhejiang Ocean University,Zhoushan 316022;Zhoushan Land Reserve Center,Zhoushan 316000,China)
出处
《浙江海洋大学学报（自然科学版）》
CAS
2023年第1期96-102,共7页
Journal of Zhejiang Ocean University：Natural Science
基金
国家自然科学基金青年科学基金项目(52101330)。
关键词
围填海
水动力
生态修复
MIKE21
水体交换
coastal reclamation
hydrodynamic
ecological restoration
Mike21
water exchange
作者简介
陈相宇(1997-),男,重庆市人,硕士研究生,研究方向:农业工程与信息技术;通信作者:倪云林.Email:nylzjou@126.com。
