摘要
本文选用变动态存储系数法进行河道洪水演算,弥补传统水文模型河道洪水演算将洪水传播时间设为定值的不足。论文选取辽宁大凌河上游大城子水文站2000—2013年15场洪水资料对模型进行率定和验证,并和传统水文模型河道洪水演算方法模拟结果进行对比研究,结果表明相比于传统水文模型,采用变动态存储系数法的洪水模拟精度有所提高,15场洪水模拟合格率提高20%。研究成果对于大凌河流域水文模拟,特别是分布式水文模拟提供较为重要的参考价值。
Landslides, mudslides and other geological disasters resulting loose soil oftenaccumulated in the riv- er shore to form large-scale accumulation body,is narrowing of the main river channel over current width, compress the main river bed, on the water movement impact.In this paper,flume experiments to study the ac- cumulation bodyunder gentle river water depth along the way and horizontal distribution.In the stackedbody under the action of river water depth along the distribution changed regularly, and its specific performance: Accumulation upstream water level obstruct higher;accumulation body segment depth drastically reduced;ac- cumulation body downstream section ,the diffusion effect ,the water level gradually returned to no accumulation bodycondition of natural water.Accumulation body near the water depth along the cross-sectional distribution compared to the natural situation as follows:accumulation bodyupstream backwater maximum in stacked side upstream, away from the accumulation body a shore,relative the cross-section ,from the accumulation of body side to the With the accumulation of body scales increased accumulation izontal distribution of has become even moreintense. water depth decreases ;accumulation body where other side of the relative depthincreases slowly. body onriver water depth along the way and hor-
出处
《吉林水利》
2013年第9期8-10,16,共4页
Jilin Water Resources
关键词
变动态存储系数法
传统水文模型
水文模拟
大凌河流域
辽宁省
accumulation body
depth along the distribution
water depth lateral distribution
flume experiments