摘要
针对水文分析计算中经常会遇到的径流系列插补延长问题,通过建立不同资料长度、不同来水条件(丰、平、枯水段)的相关关系对插补延长成果进行了实例分析,将插补延长成果与水文站实测成果进行对比,分析不同资料长度、不同来水条件下建立的相关关系对成果精度的影响程度。用相关法插补径流系列时,同期观测资料不宜过少,一般应在20~30个点据以上。来水接近多年平均水平的平水段资料系列建立的相关关系插补出的成果精度一般高于来水为丰水段或枯水段建立的相关关系插补出的成果精度。但当资料系列相对较长时,采用丰、平、枯水段进行相关得到的成果精度总体相差不大。
Aiming at the problem of runoff series interpolation and extension which is often encountered in hydrological analysis and calculation,this paper analyzed the results of interpolation and extension by establishing the correlation between different data length and different incoming water conditions(high,flat and low flow section).The results of interpolation and extension are compared with the results of hydrological station,and the influence degree of correlation established under different data length and different water conditions on the accuracy of the results is analyzed.When using correlation method to impute runoff series,the observation data in the same period should not be too few,generally more than 20-30 points.The result precision of the correlation interpolation established by the data series of the horizontal section with the incoming water close to the multi-year average level is generally higher than the result precision of the correlation interpolation established by the incoming water for the wet section or the dry section.However,when the data series are relatively long,the accuracy of the results obtained by using the high,flat and low water sections is not much dif ferent.
作者
刘阳容
刘刚
LIU Yang-rong;LIU Gang(Power China Kunming Engineering Corporation Limited,Kunming 650051,China)
出处
《云南水力发电》
2020年第2期24-27,共4页
Yunnan Water Power
关键词
水文资料
径流系列
插补延长
成果精度
hydrological data
runoff series
interpolation and extension
accuracy of results
