摘要
为分析港口湾水库对下游河道水文情势的影响,以港口湾站和宣城站为研究站点、河沥溪站为对照站,从流量和水位过程两方面说明水库对水阳江的水文影响,并采用IHA法计算分析了港口湾水库修建前后港口湾站和宣城站水文特征值的变化以说明港口湾水库对流量的影响,计算了水位脉冲的频率、大小、历时等水文参数以说明港口湾水库日调节对水阳江干支流水位过程的影响。结果表明,港口湾水库修建后,下游径流量年内分配更趋均匀;经港口湾水库的调节,河流的天然特征发生了改变,下游水位总体趋于稳定。
To analyze the influence of Gangkouwan reservoir on hydrological regime of the lower reaches of Shuiyang River,taking Gangkouwan Station and Xuancheng Station as the study sites,as well as taking Helixi Station as contrast station,this paper analyzes the hydrologic influence of discharge and water level process.In order to evaluate the impact of Gangkouwan reservoir on the discharge,the IHA method is adopted to analyze the variation of hydrologic characteristics of Gangkouwan Station and Xuancheng Station before and after the construction of Gangkouwan reservoir.And then it calculates the hydrological parameters of pulse frequency,magnitude and duration to evaluate the impact of daily regulating Gangkouwan reservoir on the water level process in Shuiyang River.The results show that the intra-annual runoff distribution of the lower reaches becomes more uniform after construction of Gangkouwan reservoir;after regulating Gangkouwan reservoir,the natural characteristics of the river changes and the water level of the lower reaches inclines to the stabilization as a whole.
出处
《水电能源科学》
北大核心
2013年第2期15-18,22,共5页
Water Resources and Power
基金
国家自然科学基金资助项目(51209072)
关键词
水阳江
港口湾水库
流量
水位
IHA法
水文情势
Shuiyangjiang River
Gangkouwan Reservoir
discharge
water level
IHA method
hydrological regime
