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Assessing the Maximum Possible Water Discharge of the Zeya River on the Zeya HPP Site
Geography and Natural Resources ( IF 0.3 ) Pub Date : 2021-03-03 , DOI: 10.1134/s1875372841040113
M. V. Bolgov , M. D. Trubetskova , M. K. Filimonova , M. A. Kharlamov

Abstract

The problem of estimating the probable maximum values of the inflow to the Zeya reservoir on the basis of determining maximum probable precipitation and results from simulating the flood runoff formation is considered. The maximum probable daily precipitation amounts were determined by the hydrometeorological method using the data of eight-term station-based meteorological observations of dew point temperature and precipitation amounts. Maximum daily precipitation values were converted to those for the travel time of the flood wave via the channel system (seven days for the Zeya basin) using the transition coefficient obtained by a statistical processing of precipitation amounts of different durations. To calculate the possible maximum flood, a rain graph with 1-day sampling intervals was constructed according to the type of change in precipitation intensity during the maximum flood observed in 2013. Precipitation was recalculated to the runoff in terms of the deterministic model developed by the Hydrologic Engineering Center (USA) with due regard for the formation characteristic of heavy floods in the settings of permafrost. The calculated limiting value of the inflow was refined using the Bayesian method of constructing a probability curve taking into account the upper limit of the distribution and the specified determination error of the desired characteristic. The values obtained for the maximum flow of the Zeya are compared with its estimates available to date.



中文翻译:

在Zeya HPP网站上评估Zeya河的最大可能出水量

摘要

考虑了在确定最大可能降水的基础上估算泽亚水库入流最大可能值以及模拟洪水径流形成结果的问题。通过水文气象方法,使用基于八站式露点温度和降水量的气象观测数据,确定了最大可能的每日降水量。使用通过对不同持续时间的降水量进行统计处理而获得的转换系数,将最大日降水量值通过渠道系统转换为洪水波传播时间的值(泽亚盆地为7天)。为了计算可能的最大洪水,根据2013年观测到的最大洪水期间降水强度的变化类型,构造了一个以1天为采样间隔的降雨图。根据美国水文工程中心开发的确定性模型,将降水重新计算为径流量。充分考虑多年冻土地区大洪水的形成特征。考虑到分布的上限和所需特性的指定确定误差,使用贝叶斯方法构造概率曲线,以精确计算出流入的极限值。将Zeya的最大流量获得的值与其迄今可用的估计值进行比较。根据美国水文工程中心开发的确定性模型,将降水重新计算为径流,并适当考虑了多年冻土环境中大洪水的形成特征。考虑到分布的上限和所需特性的指定确定误差,使用贝叶斯方法构造概率曲线,以精确计算出流入的极限值。将Zeya的最大流量获得的值与其迄今可用的估计值进行比较。根据美国水文工程中心开发的确定性模型,将降水重新计算为径流,并适当考虑了多年冻土环境中大洪水的形成特征。考虑到分布的上限和所需特性的指定确定误差,使用贝叶斯方法构造概率曲线,以精确计算出流入的极限值。将Zeya的最大流量获得的值与其迄今可用的估计值进行比较。考虑到分布的上限和所需特性的指定确定误差,使用贝叶斯方法构造概率曲线,以精确计算出流入的极限值。将Zeya的最大流量获得的值与其迄今可用的估计值进行比较。考虑到分布的上限和所需特性的指定确定误差,使用贝叶斯方法构造概率曲线,以精确计算出流入的极限值。将Zeya的最大流量获得的值与其迄今可用的估计值进行比较。

更新日期:2021-03-03
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