摘要
根据冯家山水库 195 4年～ 1999年实测的月入库径流资料 ,分析计算得到冯家山水库多年平均入库径流量仅为 4 .6亿 m3,变差系数和偏态系数分别为 0 .5和 1.0 ,年径流自相关系数为 0 .5 ,且入库径流有逐年减少的趋势。同时冯家山水库入库径流的不均匀系数达 0 .32 ,其变差系数为 0 .2 5 ;集中度的多年平均值为 4 1% ,变差系数为 0 .36。这一切都反映出冯家山水库入库径流量较少 ,且年际变化较大 ,年内分配极不均匀 ,集中程度较高 ,且历年变化较大。
Through briefly analysing the condition of Qianhe River basin and project's size and operation state of Fengjiashan reservoir, the characteristic values including average value for years and variation coefficient and skewness coefficient and so on are calculated with curve fitting method based on the monthly measured date of reservoir runoff in 1954~1955 and 1998~1999 water year, and change law of reservoir runoff among years is also analysed. The change law of reservoir runoff in certain years is studied through introducing the coefficient of uneven and the degree and time of concentration, thus the characteristics of reservoir runoff in Fengjiashan reservoir is discovered.
出处
《干旱地区农业研究》
CSCD
北大核心
2002年第1期88-91,共4页
Agricultural Research in the Arid Areas
基金
陕西省水利厅课题"宝鸡峡灌区供水潜力及非常干旱期水量调配方案研究"资助
关键词
冯家山水库
入库径流
不均匀系数
集中度
集中期
Fengjiashan reservoir
reservoir runoff
coefficient of uneven
degree and time of concentration
