江阴市主城区水系连通方案研究

Water System Connection Plan in the Main Urban Area of Jiangyin City

摘要: 江阴市主城区河湖水系割裂严重，水系连通性整体较差，现有水系连通工程仅对主城区西侧有有限的改善效果。本研究以长江为主水源地，基于“外引长江、内活水系”的基本思路，制定了系统的水系连通方案，构建了江阴市主城区一维河网数学模型，分析了水系连通工程实施后水动力改善效果。经分析，水系连通方案实施后，骨干河道流速增了0.01~0.1 m/s，水系连通对水动力改善效果明显，同时骨干河道流速大于0.05 m/s的河道占比83%，满足水系连通目标要求。

Abstract: The rivers and lakes in the main urban area of Jiangyin City are severely segmented, and the interconnection of the water system is generally poor. The existing water system interconnection project has a limited improvement effect on the west side of the main urban area. In this study, the Yangtze River is the main water source, and a systematic water system interconnection plan is formulated based on the basic idea of “divert water externally from Yangtze River and built active water system internally”. One dimensional river network mathematical model is constructed for the main urban area of Jiangyin City, which is designed to analyze the hydrodynamic improvement effect after the implementation of water system interconnection project. It is shown that after the implementation of the water system interconnection plan, the increase in the velocity of main channels is between 0.01 and 0.1 m/s, and the effect of water system interconnection on the hydrodynamic improvement is obvious. At the same time, 83% of main channels have a flow rate higher than 0.05 m/s, which satisfy the requirements of water system interconnection target.