Future changes in river bed were predicted under the assumption that flow velocity of past and changes in flow rate at upstream river due to construction of large-scale artificial structures downstream occur in the future. Therefore, the long-term runoff volume from the downstream part of Hosan Stream was estimated using the SSARR (Stream Synthesis and Reservoir Regulation Model). Changes in the river bed were simulated using RMA-2 and SED-2D, which are hydraulic models. As a result, it was found that the river bed variation is significantly affected by the inclusion of sediment in flood flow at upstream. A comprehensive evaluation of above results revealed that the river width has significantly affected flow rate, and the inclusion of sediment in flood flow from the upstream has a huge effect on changes in the riverbed. In this regard, there is a need to devise measures to mitigate future flood damage to artificial structures by reflecting sedimentation trends downstream before the construction of large-scale artificial structures at downstream of river.

中文翻译：

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使用SSARR和RMA-2模型分析河床变化

假设将来会发生过去的流速和由于下游大型人工结构的建造而导致上游河流流量发生变化的情况，则可以预测河床的未来变化。因此，使用SSARR（河流综合和储层调节模型）估算了从Hosan Stream下游开始的长期径流量。使用水力模型RMA-2和SED-2D模拟河床的变化。结果，发现上游的洪水将泥沙包括在内对河床变化有显着影响。对以上结果的综合评估表明，河流宽度显着影响了流量，上游的洪水将泥沙包括在内对河床的变化产生了巨大影响。在这方面，