泰州引江河口门区泥沙淤积特征及成因分析

Analysis of the characteristics and causes of sediment accumulation in entrance area of Taizhou Diversion River

泰州引江河是江苏省重要的水利工程,建成运行后,发挥了巨大的综合效益,但其口门区存在的泥沙淤积问题一直是研究解决的重点。基于多年实测水文、泥沙和地形数据,针对泰州引江河口门区泥沙淤积状况,结合工程所在江段的水沙特性、引江河床面形态,讨论了该区域的泥沙淤积特征,并对该口门区泥沙累积淤积成因进行了分析,研究结果表明:泰州引江河工程口门区受河段河势特征、潮流、引排水调度影响,动力来源多样,易出现特殊水流结构,口门区泥沙多年累积淤积,随着泥沙向引江河道内发展,逐渐呈现区域淤积与区域冲刷并存现象。

Taizhou Diversion River is an important water resources project in Jiangsu Province.After its completion and operation,it has achieved tremendous comprehensive benefits,but the sedimentation problem in the entrance area has always been a focus of research and solution.Based on years of measured hydrological,sediment,and topographic data,this paper addresses the sediment accumulation situation in the entrance area of the Taizhou River Diversion,combined with the water and sediment characteristics of the river section where the project is located and the morphology of the river bed,the sediment accumulation characteristics in the mouth area are also analyzed.The research results indicate that the entrance area of Taizhou River diversion project is influenced by the characteristics of the river regime,tidal currents,and the regulation of water diversion and drainage.It has various power sources,which is prone to special flow structure.The sediment in the entrance area has accumulated for many years,and with the development of sediment into the diversion channel,regional sedimentation and regional erosion have coexisted gradually.