基流分割方法研究——基于辽河流域中下游地区  

A Study on the Method of Base Flow Segmentation Based on the Middle and Lower Reaches of the Liaohe River Basin

作　　者：王远智[1] 梁秀娟[1] 肖长来[1] 尚殿钧 刘洪超[1] 

机构地区：[1]吉林大学地下水资源与环境教育部重点实验室,长春130021

出　　处：《节水灌溉》2016年第11期56-60,共5页Water Saving Irrigation

基　　金：国家自然科学基金项目(41572216);吉林省自然科学基金项目(20140101164JC)

摘　　要：河川基流作为地下水的主要排泄方式之一,对于地下水资源量的估算有着重要的意义。利用辽河流域中下游地区泉太、王宝庆、八棵树水文站2003-2008年天然日径流资料,分别采用数字滤波法(Lyne-Holick法、Eckhardt法)和滑动最小值法对辽河流域中下游的地下基流量进行分割计算,分析3种方法的优缺点,以期得到较好的基流分割计算方法,进而评估这3个水文站的地下基流量。主要结果包括:3种方法能较为准确的分割出地下径流量,但Eckhardt滤波法的基流分割结果最为准确且能很好地反映地下水径流规律;辽河流域3个水文站的地下径流指数BFI约为0.60,其中枯水期BFI约为0.63,丰水期BFI约为0.55。As one of the methods of groundwater discharge, base flow is very important for the estimation of groundwater resources. In this paper, on the basis of the analysis of the natural daily runoff data of the hydrological station in the middle and lower reaches of the Liaohe River in 6 years, the two digital filter methods （Lyne-Holiek method and Eckhardt method） and the sliding minimum value method is used to calculate the groundwater flow. The conclusions are gained as following： all the three methods can accurately segment the underground runoff and the results of Eckhardt filtering method based on flow segmentation is the most accurate and can reflect the law of groundwater runoff. In the study area, the BFI （Groundwater flow index） is about 0. 60, while it is about 0. 63 in dry season and about 0. 55 in wet season.

关 键 词：基流分割 数字滤波法 滑动最小值法 

分 类 号：S273.2[农业科学—农业水土工程] TV121[农业科学—农业工程]