密怀顺地区南水北调水回补对地下水储量影响研究  

Study on the effect of replenishment on groundwater storage by South-to-North water transfer in Mihuaishun region

作　　者：王鑫[1] 祁生林 李炳华 毕二平[1] WANG Xin;QI Shenglin;LI Binghua;BI Erping(China University of Geosciences,Beijing 100083,China;Beijing Water Authority Bureau Government Service Center,Beijing 100071,China;Beijing Water Science and Technology Institute,Beijing 100048,China)

机构地区：[1]中国地质大学,北京100083 [2]北京市水务局政务服务中心,北京100071 [3]北京市水科学技术研究院,北京100048

出　　处：《北京水务》2022年第5期11-17,共7页Beijing Water

摘　　要：潮白河南水北调水源回补工程自2015年起开始实施以来,为密怀顺地下水源地可持续供给和河道生态恢复提供了有力保障。分析了密怀顺地区长期地下水位监测数据,通过水位变差法及水均衡法对2015—2018年补水期地下水储量进行计算。结果显示:补水河道附近地下水位对补水的响应较快,长期有水河道渗透性能明显降低。水位变差法适用于补水河道附近监测井较多的情况,考虑降水、开采等因素,计算得到的地下水蓄变量与实际情况较符合。而水均衡法准确性取决于系数的取值,调水较多年份,主导储变量的是河道回补、降雨入渗及开采,来水量较小年份,侧向流出量占比提高,作用不可忽略。研究成果可为流域内生态补水工作持续开展以及地下水回补提供理论依据。The groundwater recharge by South-to-North water transfer project in Chaobai River has been implemented since 2015,which provides a strong guarantee for the sustainable supply of the groundwater source and the ecological restoration of the river.Based on the long-term water table data,this thesis studies the replenishment amount through the water table variation method and water balance method.The main conclusions are as follows:the response of groundwater level to recharge water is fast near the recharge river channel and the permeability of long-term rivers decreases obviously.Water table variation method can be used to calculate the change of groundwater reserves in the river course,and the calculation results are more reliable in areas with enough monitoring wells.In addition,the accuracy of calculating groundwater reserves by water balance method depends on the value of coefficient.While the storage was mainly influenced by surface water recharge,rainfall infiltration and groundwater exploitation.Therefore,when the amount of South-to-North water replenishment is small,the lateral outflow should be considered in the calculation.The findings of groundwater storage influence caused by artificial recharge of groundwater can provide a theoretical basis for the sustainable development of ecological water supply and groundwater recharge.

关 键 词：南水北调工程 地下水回补 地下水储量 密怀顺地区 

分 类 号：P641.8[天文地球—地质矿产勘探]