漳卫河流域洪水预报模型及水利工程调控影响问题研究
发布时间：2018-10-08 10:55
【摘要】：漳卫河所属的海河流域在我国政治、经济、文化领域占有重要地位,也是我国水旱灾害十分严重的地区,所以,洪水预报工作显得尤为重要。本文介绍了以EasyDHM分布式水文模型为基础的洪水预报模型,并在此基础上增加了考虑气象因素的数值预报和考虑下垫面变化情况的坡洼、水库、引水口门对预报结果的干预功能。根据实际情况对原有EasyDHM作出了改进,为漳卫河流域洪水预报提供了有力的依据。(1)根据漳卫河流域站点、水系、气象、地形、土壤等情况建立了漳卫河流域分布式水文模型,并根据历史洪水进行了参数率定,结果表明,EasyDHM分布式水文模型在漳卫河地区具有较好的适应性,可以支持洪水预报工作。(2)使用率定整理后的参数,进行历史洪水模拟验证和实时洪水的预报,将实时洪水预报结果与考虑数值预报的结果对比分析,表明数值预报可以作为降雨输入。(3)将漳卫河流域的大小水库分别考虑,大水库作为可控流量的点,中小水库以及蓄滞洪区按照坡洼考虑,并根据实际情况,增设了引水口门,用来控制径流量,结果表明,这些措施一定程度上反映了下垫面变化对洪水预报的影响。
[Abstract]:The Haihe River Basin, which belongs to the Zhangwei River, plays an important role in the political, economic and cultural fields of our country, and is also a very serious area of flood and drought disasters in China. Therefore, flood forecasting is particularly important. In this paper, a flood forecasting model based on EasyDHM distributed hydrological model is introduced, and on this basis, the intervention function of Powa, reservoir and diversion gate considering the change of underlying surface to forecast results is added. According to the actual situation, the original EasyDHM is improved, which provides a powerful basis for flood forecast in Zhangwei River basin. (1) according to the station, water system, meteorology, topography, soil and so on, the distributed hydrological model of Zhangwei River basin is established. The results show that the EasyDHM distributed hydrological model has good adaptability in Zhangwei River area and can support flood forecast work. (2) the parameters after the utilization rate are determined. The results of historical flood simulation and real time flood forecasting are compared with the results of numerical forecast. The results show that numerical forecast can be used as rainfall input. (3) the size and size of reservoirs in Zhangwei River Basin are considered separately. The large reservoir is the point of controllable discharge, the small and medium reservoirs and the flood storage and detention areas are considered according to the slope depression, and according to the actual situation, the diversion gate is added to control the runoff. The results show that, To some extent, these measures reflect the influence of the change of underlying surface on flood forecast.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV124;TV697.11
本文编号：2256492
[Abstract]:The Haihe River Basin, which belongs to the Zhangwei River, plays an important role in the political, economic and cultural fields of our country, and is also a very serious area of flood and drought disasters in China. Therefore, flood forecasting is particularly important. In this paper, a flood forecasting model based on EasyDHM distributed hydrological model is introduced, and on this basis, the intervention function of Powa, reservoir and diversion gate considering the change of underlying surface to forecast results is added. According to the actual situation, the original EasyDHM is improved, which provides a powerful basis for flood forecast in Zhangwei River basin. (1) according to the station, water system, meteorology, topography, soil and so on, the distributed hydrological model of Zhangwei River basin is established. The results show that the EasyDHM distributed hydrological model has good adaptability in Zhangwei River area and can support flood forecast work. (2) the parameters after the utilization rate are determined. The results of historical flood simulation and real time flood forecasting are compared with the results of numerical forecast. The results show that numerical forecast can be used as rainfall input. (3) the size and size of reservoirs in Zhangwei River Basin are considered separately. The large reservoir is the point of controllable discharge, the small and medium reservoirs and the flood storage and detention areas are considered according to the slope depression, and according to the actual situation, the diversion gate is added to control the runoff. The results show that, To some extent, these measures reflect the influence of the change of underlying surface on flood forecast.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TV124;TV697.11
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