乌克兰布赫河流域南部未测点春季洪水可能最大流量的计算方法

L. Gorbachova, Borys Khrystyuk
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引用次数: 2

摘要

摘要春洪可能最大流量的计算具有重要的现实意义,它是大坝、涵洞、城市和农业排水系统等各种水工设施规划设计的依据。因此,在确定流域未测量地点可能的最大春洪流量时,更新经验公式的方法方法和参数是一项实际任务。本文对乌克兰未计量流域春季洪水可能最大流量的计算中所使用的流量缩减公式和极限强度公式的参数进行了更新。研究结果表明,根据现代观测序列(自观测开始至2010年)计算的经验公式参数与之前收到的(自观测开始至1980年)相比有显著变化。研究发现,这是由于南布江流域春洪最大流量长期波动的周期性。我们还说明,对于小型未测量的盆地,在选择类似河流方面存在困难。
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Calculation Approaches of the Probable Maximum Discharge of Spring Flood at Ungauged Sites in the Southern Buh River Basin, Ukraine
Abstract Calculation of probable maximum discharge of spring flood are the great practical importance, since it is the basis to plan and design of different hydraulic structures, such as dams, culverts, urban and agriculture drainage systems, etc. Thus, the updating of the methodical approaches and parameters of the empirical formulas which using in the determining of the probable maximum discharge of spring flood at ungauged sites of the river basin is an actual task. In this paper for the Southern Buh River Basin were updated the parameters of the reduction formula and the limiting intensity formula of streamflow which are using to calculated of the probable maximum discharge of spring flood at ungauged basin in Ukraine. The presented results illustrate that parameters of empirical formulas that were calculated according to modern observation series (since the beginning of the observations to 2010) in comparison with previously received (since the beginning of the observations to 1980) have significant changes. We found out that it is due to cyclical of the long-term fluctuations of the maximum streamflow of spring flood in the Southern Buh River Basin. We also illustrated that for the small ungauged basins have the difficulties with the choice of rivers-analogues.
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