华北典型地下水大深埋区潜水层垂向补给特征及其给水度  

Research on vertical recharge and specific yield of the unconfined aquifer in a typical deep groundwater areas of North China Plain

作　　者：裴源生[1] 李旭东[1] 赵勇[1] 翟家齐[1] PEI Yuansheng;LI Xudong;ZHAO Yong;ZHAI Jiaqi(State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin,China Institute of Water Resources and Hydropower Research,Beijing 100038,China)

机构地区：[1]中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038

出　　处：《南水北调与水利科技（中英文）》2020年第1期176-193,共18页South-to-North Water Transfers and Water Science & Technology

基　　金：国家重点研发计划项目(2016YFC0401407);国家杰出青年科学基金(51625904);中国水科院创新团队项目(WR0145B622017)。

摘　　要：针对华北平原地下水大埋深区面积大,而其地下水垂向补给特征及含水层给水度认识不足的问题,以河北栾城试验站附近某研究区为典型区,基于大田试验的水循环模拟,量化了地下水补给及潜水层给水度大小,并探讨了地下水垂向补给特点等关键问题。研究表明:研究区在两个丰水年2012年及2013年地下水潜在补给量约为236.6mm和223.5mm,当年实际补给量约为144.1mm和129.8mm,日补给量在0.37~0.40mm及0.33~0.38mm之间;经过厚包气带的迟滞和调节作用,地下水补给过程较为平稳,年际年内差异较小;研究区当前地下水埋深条件下潜水含水层给水度约为0.03。The area of regions with a deep groundwater table is expanding in North China Plain(NCP).The characteristics of groundwater recharge and the value of specific yield have not been well studied in NCP.Therefore,an agricultural area near Luancheng Experimental Station,Hebei Province,was taken to study the vertical recharge and the specific yield using distributed water cycle modeling based on a field experiment.Moreover,the groundwater recharge characteristics were also explored.The results showed that in 2012 and 2013,the potential recharge was 236.6 mm and 223.5 mm,while the groundwater recharge was144.1 mm and 129.8 mm,respectively,in the study area.And the daily recharge rate ranges between 0.370 mm/d and 0.404 mm/d and 0.327 and 0.382 mm/d in 2012 and 2013 respectively.This scenario indicated that the groundwater recharge was relatively stable and the inter-annual and inter-diurnal differences were small due to the regulation and buffering of the deep vadose zone.Besides,the specific yield of the unconfined aquifer was about 0.03.

关 键 词：水循环 大埋深 地下水补给 给水度 华北平原 

分 类 号：TV93[水利工程—水利水电工程]