基于自适应算法的弯曲河道断面布设

A self-adaptive algorithm of flow measuring vertical line layout across cross-section for natural river

针对现阶段传统断面布设算法在弯曲河道断面布设中的不足,提出一种河道断面布设的自适应算法。根据给定的水边和河道中心线独立生成每根断面线,使得断面线不仅能适配水边,还能与河道中心线保持较高的垂直度,并对断面线在弯曲河道的集束问题和相交问题进行优化处理,保证断面线在河道内均匀分布。为验证算法的可行性,选取3种类型河道地形进行对比试验,并从主观角度和客观指标对断面布设效果进行评价。试验结果表明,自适应算法在保证断面间距的前提下兼顾了断面垂直度和分合理性,明显优于传统算法。

Aiming at the shortcomings of the current algorithm of flow measuring vertical line layout across crosssection in curved river,an self-adaptive algorithm for flow measuring vertical line layout is proposed.This algorithm generates each vertical line independently according to the given water frontier and the river centerline,so that the vertical line can not only adapt to the water frontier,but also maintain a relatively high perpendicular to the river centerline,and optimize the clustering and intersection problems of the vertical lines in curved river to ensure that the vertical lines are evenly distributed across the rivers.In order to verify the feasibility of the algorithm,three dif⁃ferent river topographies were selected for comparative analysis,and the effect of vertical line layout was evaluated subjectively and objectively.The analysis results show that by the adaptive algorithm,both the higher perpendicular to the river centerline and the reasonable distribution of the vertical lines can be obtained under the assurance of evenly distribution vertical lines,which is significantly better than traditional algorithms.