京杭运河常州段改线工程进口口门方案比选

Comparison of entrance schemes for Changzhou section of Jinghang Great Canal diversion project

针对京杭运河常州市区段改线工程进口口门附近水流和泥沙输运复杂的现状,拟定4个口门连接方案,建立一维和平面二维水流泥沙数学模型,从泥沙淤积的角度对这4个设计方案进行了分析论证.选取丰水年水文条件,通过不同方案下泥沙淤积的分析比较,认为进口口门东、西方案各有其优势,从泥沙淤积量角度看,西方案相对较优;从土地利用和工程投资来看,东方案较优.

In view of the complicated water current and sediment transport condition near the entrances of the project, four entrance connection schemes were worked out. The one-dimensional and two-dimensional water flow and sediment numerical models were developed to analyze the schemes from the angle of sediment accumulation. The comparison of sediment accumulation in high flow years under different schemes shows that the west entrance arrangement scheme is better from the angle of sediment accumulation, while the east entrance arrangement scheme is better from the angle of land utilization and project investment.