摘要
近年来受人类活动影响,富春江流域下垫面因子发生重大改变,传统水位流量关系无法应用。为应用水位比降法推求入库控制站有效入库流量,首先要对水位资料进行分析计算。以圣维南方程组为理论基础建立水动力学模型,考虑河道糙率的空间变异性,根据已有资料对富春江水库上游河道进行概化,模拟计算2013年女埠站洪水水位过程。同时采用经验相关法建立水位关系函数求解女埠站水位。2种方法模拟计算精度皆较高,水动力学方法在验证期洪峰模拟上优于经验相关法,而后者在洪水过程模拟上的确定性系数更高。由计算结果误差分析可知考虑水力要素时间变异性的水动力学模型能更好拟合退水过程,值得深入研究。
In recent years, the underlying surface of Fuchun River Basin has undergone major changes affected by human activities and the traditional relation curve of water level and discharge is not applied. For the application of water level gradient method, the effective reservoir inflow at Lanxi section is calculated. First of all, water level data is proposed for analysis and calculation. A hydrodynamic calculation model based on the Saint-Venant equations is built which contains spatial variability of reaches roughness and the upstream riverway of Fuchun River reservoir is generalized according to the observation data, and the flood data for 2013 is input to calibrate model parameters and simulate the water level of Nvbu Station. At the same time, the water level function is established by using the empirical correlation method. The precision of the two methods is high and the hydrodynamic method is superior to the empirical correlation method in the flood peak simulation of the verification period, while the latter has higher determinacy coefficient in the flood process simulation. The results show that the hydrodynamic model considering the temporal variability of hydraulic elements can better fit the water withdrawal process and is worthy of further study.
作者
陈学秋
瞿思敏
李代华
石朋
王轶凡
单帅
勾建峰
CHEN Xue-qiu1, QU Si-min1,2 , LI Dai-hua3 , SHI Peng1,2 , WANG Yi-fan1 , SHAN Shuai1 , GOU Jian-feng1(l.College of Hydrology and Water Resources, Hohai University, Nanjing 210098, China; 2.State Key Lahoratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China; 3.Wenshan Branch, Yunnan Provincial Hydrology and Water Resources Bureau, Wenshan 663099, Yunnan Province,Chin)
出处
《中国农村水利水电》
北大核心
2018年第2期121-125,共5页
China Rural Water and Hydropower
基金
国家重点研发计划(2016YFC0402703)
国家自然科学基金(41371048
51479062)
中央高校基础科研业务费(2017B10914
2015B14314)
关键词
富春江水库
水位计算
水动力学模型
经验相关法
误差分析
Fuchun River Reservoir
water level calculation
hydrodynamic model
empirical correlation method
error analysis
