| 參觀人次:2023797 | 108 年瀏覽人次:318057 |
館藏資料:
識別號0000097732
題名系集水理模式庫建置與警戒水位訂定研究(2/2)=Study on Ensemble Hydraulic Model Database and Establishment of Warning Stages (2/2)
作者
ISBN9789860514292
出版項
台北市 : , 10512
版本項初版
分類號443.6
編號(GPN/EBN)1010503035
委辦計畫編號MOEAWRA1050235
中文摘要本計畫主要目的有三,一為汛期後河川警戒水位訂修與檢討、可提供各河川局於隔年汛期前警戒水位公告之參考。二為建置第二種變量流水理模式作為水利署之洪水預報作業系統於汛期間使用,藉以達到系集預報水位預報功能、三為中央管河川之一維河道動床模式建置、檢定與驗證,並協助二條中央管河川之河道動床模式銜接至本署洪水預報作業系統平台,支援與擴充中央管河川水位系集模擬預報研究等相關工作。
英文摘要The project has five main research items in this year. The first item is the review and establishment of river warning stages after the flood of this year, served as the reference of the river warning stage announcement in next year. The second item, the new water stations establish the river warning stages. The third item is the installation of second type 1D hydraulic model of the central authority’s river, model verification and validation that can insert in FEWS-TAIWAN forecasting platform. Fourth ,the installation of 1D sediment model including model verification and validation are performed and applied to the Zengwen and Gaoping rivers. Finally, the training and transferring of the model is executed. This year project results are summarized as follows: 1.According to the river warning stage of the central authority’s river analysis and review results are shown in summary Abstract Table 1. It can be served as the reference of the river warning stage announcement in next year. 2.This project installs second type 1D hydraulic model (CCHE1D) for 25 rivers. Through the WRA’s other working group, the model output data can be connected to the FEWS-TAIWAN flood forecasting platform. 3.The results of different 1D SOBEK and CCHE1D hydraulic models, there will be differences in water level, the error is mainly the numerical model itself, and therefore, produce water level simulation results of the difference. Resulting in statistical differences in the rate of rise flood water level. As a result of discussions at the planned work meeting, the flood rate of the warning stage was mainly determined by the SOBEK model of hydrological and hydraulic model integrity and facilitation as a warning stage. The CCHE1D model is mainly aided and used in conjunction with the FEWS-TAIWAN flood forecasting platform provided to the WRA for the analysis of ensemble hydraulic models during the annual flood season. 4.After the model verification and validation of 1D hydraulic and sediment model (CCHE1D) for the Zengwen and Gaoping rivers, we compared two model simulation results of the flood level and flood rise rate. CCHE1D sediment model in the moving bed under the calculation of the time and stability and can be consistent with flood forecasting needs. In addition, the basic information required for the sediment model is relatively large (sand size composition, suspended load, etc.) and can be developed in the future so that the flood forecasting platform of the WRA can achieve multi-model flood forecasting. On the other hand, the results show that in the sediment model simulation results at the flood level are lower than hydraulic model simulation results. 5.To achieve the relevant technology transfer of establishment of river warning stages, we prepared the indoor course and the outdoor water level station to explain the relationship between the status of the disaster prevention how to use the Warning stage. The education and training will help the first-line disaster relief personnel in the flood warning stage set by reference to the preservation of the object, the river defense works and structures and local conditions for flood warning stage control elevation decision and local flood characteristics. The whole process allows the engineering staff to be able to understand the disaster prevention and hydraulic model technology can apply to the site.
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