摘要
贵州省属岩溶较发育地区,丰富的地下暗河常导致地表和地下分水岭不一致,即非闭合流域。基于短期观测成果,通过各实测断面径流相关性分析,选择合理的拟合函数建立相关关系式,结合水文站实测径流及水文比拟法,同时考虑地下暗河径流约束条件,得到水量交换径流成果,并以此修正水文站实测径流。以印江河流域、松桃河流域之间的白马泉交换水量为例,结果表明,白马泉交换径流占印江水文站实测径流的4.8%;印江水文站还原径流成果枯半年占比仅增加了0.6%,径流CV基本一致,还原前后径流成果变化很小。
Guizhou Province, it is a karst-developed area, and the rich underground rivers cause the surface and underground watersheds to be inconsistent, that is, non-closed watersheds. Based on the short-term observation results,through the correlation analysis of the runoffs of the measured sections, the reasonable fitting function is selected to establish the correlation relationship, combined with the hydrological station measured runoff and hydrological comparison method, and the underground dark river runoff constraints are considered, and the water exchange runoff results are obtained. This will correct the actual runoff of the hydrological station. Taking the exchange volume of Baimaquan in the Yinjiang River Basin and the Songtao River Basin as an example, the results show that the Baimaquan exchange runoff accounts for 4.8% of the measured runoff of the Yinjiang hydrological station;the reduction of the inflow performance of the Yinjiang hydrological station only increases in half a year. At 0.6%, the runoff CV is basically the same, and the results of runoff before and after the reduction are small.
作者
沈军
苟露
Shen Jun;Gou Lu(Guizhou Water Resources and Hydropower Survey and Design Institute Guiyang 550002, Guizhou)
出处
《陕西水利》
2019年第4期44-46,共3页
Shaanxi Water Resources
关键词
短期观测
非闭合流域
相关性拟合
径流计算
Short-term observation
non-closed watershed
correlation fitting
runoff calculation
