基于九江镇水系连通性优化调度研究

Research on Optimal Operation of Water System Connectivity in Jiujiang Town

目前我国城市扩张过程引起水循环受阻、水体污染以及水资源空间分布不均等一系列水环境问题,如何实现城镇水系的优化调度和城水共生的可持续发展,是城镇水环境治理过程中所面临的重要课题。以九江镇目前所面临的河涌内涝、景观生态用水需求大等问题为研究背景,按照优化排水路径、活化水体的总体思路,采用水系连通、调蓄湖、泵站等河道排涝措施和以东西运河、南北主涌和梅圳大谷涌为主线,分东南北3个片区进行空间上的“潮汐”方案总体调度,并采用DHI水动力模拟软件Mike11进行一维水动力效果模拟,结果显示河道水动力条件较好,水循环加快,水质改善,为实现城镇水系生态化的总体目标更进一步。

At present,the process of urban expansion in China has caused a series of water environmental problems,such as water cycle blockage,water pollution and uneven spatial distribution of water resources.How to realize the optimal dispatch of urban water system and the sustainable development of urban water symbiosis is an important issue in the process of urban water environment treatment.This paper takes Jiujiang Town as the research background to study the problems such as inundation of rivers and large demand for landscape ecological water.According to the general idea of optimizing drainage path and activating water body,the general dispatch of spatial tidal scheme is carried out in three zones:southeast and north,taking drainage measures of rivers such as water system connection,regulating lakes and pumping stations as well as the main lines of east-west canal,northsouth main gush and Meizhen grand gulf gush.DHI hydrodynamic simulation software Mike11 is used to carry out one-dimensional hydrodynamic effect simulation.The results show that the hydrodynamic conditions of the river are better,the water circulation is quickened and the water quality is improved,which further improves the overall goal of realizing the ecology of urban water system.