摘要
应用传统的径流系数法与SCS—CN模型法预测了北京市门头沟西侧小流域雨水资源利用潜力,并对比了不同方法预测的雨水资源量及其时空分布规律。结果表明,径流系数法预测的丰水年(P=25%)、平水年(P=50%)、枯水年(P=75%)和多年平均年份地表雨水资源量分别为:2.84×107 m3,1.98×107 m3,1.22×107 m3和2.14×107 m3。模型法预测的丰水年、平水年、枯水年和多年平均地表雨水资源量分别为:3.21×107 m3,2.16×107 m3,1.31×107 m3和2.50×107 m3,经验法预测值小于模型法。夏季的7月,地表的雨水资源利用潜力达到相应特征年份的最大值。
The potential of rainwater resources utilization were calculated and compared using the empirical formula method and SCS--CN model method. The amount of surface rainwater resources through different methods were analyzed and contrasted monthly and seasonally to find time and spatial distribution of water resources. Result showed that the predicted amount of surface rainwater resources by the empirical formula method in wet years（P=25%）, flat water years（P=50%）, dry years（P=75%） and mean years were as fol- lows： 2.84 × 10^7 m3 , 1.98 × 10^7 m3 , 1.22× 10^7 m3 and 2.14 ×10^7 m3 , respectively. The predicted amounts by the model method in wet years, flat water years, dry years and average annual precipitation years were as follows： 3.21×10^7 m3 , 2.16 × 10^7 m3 , 1.31 × 10^7 m3 and 2.50×10^7 m3 , respectively. The calculated value of experience methodrs was less than that of the model method. The summer of July, surface rainwater utili- zation potential reached a maximum value of corresponding feature year.
出处
《水土保持通报》
CSCD
北大核心
2013年第6期227-231,共5页
Bulletin of Soil and Water Conservation
基金
北京市门头沟区流域治理专项资金项目(YSLY2011016)
关键词
经验公式
SCS--CN水文模型
地表雨水资源
分布规律
empirical formula
SCS
CN hydrological model
surface rainwater resource
distribution regularities
