赵口—黑岗口河段河势演变及工程适应性分析

在统计不同时段赵口—黑岗口河段河湾要素的基础上,分析了规划流路与实际流路河湾要素之间的相互关系,从河床比降、弯道半径、河湾中心角、直河段河长等方面分析了河势演变情况及已建工程对河势流路的适应性。结果表明:规划流路与实际流路趋向匹配;多数工程河湾半径设计较为合理,但部分工程设计弯道中心角较大,不利于控制主流;建议结合工程实际情况采取一定的工程措施,进一步完善原有的整治方案,增强对河势的控制能力。

Research on Morphological Evolution and Applicability of River Training Works in Zhaokou- Heigangkou Reach

Based on the statistical result of the river bend parameter in Zhaokou-Heigangkou reach in different periods,the paper analyzed the relation of the river bend parameter between the plan flow path and real flow path and then discussed the applicability of river training works according to the change of the river slope,bend radius,bend centre angle and the length of the straight reach.The results show that the plan flow path matches the real flow path and most of the river bends are reasonable.However it also shows that some bend centre angles are a little bigger and it leads to the fail of control of the main flow.At last,the suggestions are given that some river training works should be built to strengthen the control for the river flow with the existing river training works.