三峡大坝蓄水运行后川江塘土坝河段河床演变分析及趋势预测

Riverbed Evolution Analysis and Forecast of Chuanjiang Tangtuba Reach after the Water Storage of Three Gorges Dam

在三峡大坝蓄水引起常年回水区水沙条件、边界条件发生重大变化的前提下,结合蓄水前后常年回水区塘土坝河段的来水来沙及河床地形的原型观测资料,分析了该河段的泥沙淤积、横断面和深泓线等的变化规律,并预测其发展趋势。

After the impoundment of Three Gorges dam, which caused the radical change of sand conditions and boundary conditions at the perennial backwater area, the variation rule of the reach＇ s sediment deposition, cross-sections and thalweg, etc. , were analyzed and its development trend was also forecasted, combing with the coming water and sediment conditions of Tangtuba Reach at perennial backwater area before and after impoundment as well as the river bed topography pro- totype observation data.