Abstract

The article presents the results of adaptation and application of two-dimensional hydrodynamic model STREAM_2D to reproduce the characteristics of ice-jam-induced floods in the vicinity of the city of Velikiy Ustyug (the Northern Dvina river basin, Vologda region, Russia). The additional hydraulic resistance due to ice roughness and the decrease in the flow cross-section area due to ice-caused congestion were taken into account for modeling of ice-jam-induced water level variations. The corresponding model parameters were estimated on the basis of numerical experiments and flood modeling for the period from 1980 to 2016, which includes more than 18 significant cases of ice-jamming. Grouping of model parameters by the height of the ice-jam-induced water level rises could be useful for the application of the developed model in the framework of an intelligent information system of river flood monitoring.

中文翻译：

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在河流监控智能系统框架中对冰冻洪水建模

摘要

本文介绍了二维水动力模型STREAM_2D的改编和应用结果，以重现Velikiy Ustyug市（俄罗斯沃洛格达州北部德维纳河流域）附近冰冻引起的洪水的特征。在对冰塞引起的水位变化进行建模时，考虑了由于冰的粗糙度引起的附加水力阻力以及由于冰引起的拥塞而导致的流量截面积的减小。在1980年至2016年期间的数值实验和洪水模型的基础上，估算了相应的模型参数，其中包括18多个重大的冰堵事件。