摘要
流域内许多中小型水库的存在改变了流域原始的产汇流机制,对于北方干旱半干旱地区的影响更为明显。本文在适用于北方干旱半干旱地区的大伙房流域模型基础上,结合流域前期降雨、蒸发、小水库群控制面积、兴利库容等资料,定量估算中小水库群的拦蓄作用;考虑中小型水库群对不同土壤湿润程度、不同降雨分布和不同累积降雨的洪水汇流过程的影响,建立改进的大伙房流域模型,并应用于烟台市门楼水库流域。结果表明:改进后的大伙房流域模型能有效地提高门楼水库洪水预报精度和合格率,为该水库的防洪调度提供科学依据和技术支撑。
The existence of many medium and small reservoirs in the river basin changes the original process of runoff generation and confluence , which has more obvious impact on the arid and semi-arid re-gions of northern China .On the basis of DHF hydrological model which applied to the northern arid and semi-arid regions , this paper quantitatively estimates the capacity of runoff interception of medium and small reservoir swarm according to the data such as antecedent precipitation , evaporation , control area of small reservoirs , beneficial reservoir capacity , and some others;Considering the varied influences of me-dium and small reservoirs swarm on the flood confluence process of different soil moistures , distribution of rainfall and different cumulative rainfall ,and then it built the improved DHF model and applied it to Men-lou basin of Yantai .The simulation results show that the improved DHF hydrological model can effectively improve the accuracy and qualified rate of Menlou reservoir flood forecast and can provide scientific basis and technical support for reservoir flood control operation .
出处
《水资源与水工程学报》
2015年第5期141-146,共6页
Journal of Water Resources and Water Engineering
基金
水利部公益性行业科研专项(201201054)
关键词
洪水预报
大伙房流域模型
中小型水库群影响
洪水分类
flood prediction
DHF hydrological model
impact of medium and small reservoirs
flood classification
