地质通报2026，Vol.45Issue(8)：1520-1532,13.DOI:10.12097/gbc.2025.07.058
基于水位埋深响应的深层地下水单井回灌量阈值研究
Threshold of deep groundwater single-well recharge rate in response to water table depth:A case study for the Changcun test site of Hengshui City,Hebei Province
摘要
Abstract
[Objective]Groundwater over-exploited areas in North China,represented by Hengshui City,encounter notable technical bottlenecks because the core technical parameters for deep groundwater recharge lack systematic engineering verification.Taking the Changcun Test Site in Hengshui City as the research area,this study systematically identifies the single-well recharge rate threshold for deep groundwater,aiming to provide a scientific basis for parameter optimization,operational stability control,and ecological restoration of regional groundwater recharge projects.[Methods]Two 320-m-deep recharge wells(HⅢ4 and HⅢ5)with an interval of 10 m,along with 15 monitoring wells and three layered land subsidence monitoring benchmarks,were deployed at the test site.Pulsed controlled single-well recharge experiments were conducted,and real-time dynamic data of recharge rate and water table depth were continuously monitored and collected.SPSS software was adopted to analyze data characteristics and correlation relationships.Combined with scatter plots and linear regression models,the three-point rolling correlation coefficient method was used to identify abrupt positive-negative transition points of correlation coefficients,so as to quantify the effective threshold range of single-well recharge rate.[Results]The results show that the effective single-well recharge rate thresholds are 14.65~32.77 m3/h for Well HⅢ4 and 14.15~21.10 m3/h for Well HⅢ5.Within this threshold range,recharge water infiltrates uniformly,and the recharge rate has a significant negative correlation with water table depth(r<-0.8 for HⅢ4,r<-0.6 for HⅢ5).Exceeding the threshold will cause abnormal infiltration and reverse the correlation to strongly positive(r>0.8).Significant spatial heterogeneity is found in recharge responses:Well HⅢ4 exerts a prominent influence on surrounding monitoring wells,with an absolute correlation coefficient higher than 0.8.while Well HⅢ5 only affects the immediate near-well area,with an absolute correlation coefficient of 0.37.Furthermore,the three-point rolling correlation coefficient method is verified to accurately capture the critical transition threshold of groundwater recharge states.[Conclusions]This study clarifies the effective recharge rate threshold ranges of the two deep groundwater recharge wells and reveals the inherent response mechanism:a negative correlation corresponds to stable and effective recharge,whereas a positive correlation indicates abnormal recharge conditions.The reliability and applicability of the three-point rolling correlation coefficient method are fully validated via field tests.This study fills the gap in field engineering verification of core technical parameters for deep groundwater recharge in over-exploited areas of North China and provides solid technical support for the optimal design and safe operation of regional groundwater recharge projects.关键词
深层地下水回灌/单井回灌量/水位埋深响应/3点滚动相关系数/河北衡水Key words
deep groundwater recharge/the single-well recharge rate/water table depth response/the three-point rolling correlation coefficient/Hengshui City,Hebei Province分类
天文与地球科学引用本文复制引用
王丽娟,刘鹏飞,宋胜华,李新旺,马素英,马靖宣..基于水位埋深响应的深层地下水单井回灌量阈值研究[J].地质通报,2026,45(8):1520-1532,13.基金项目
河北省省级水利科技计划项目《河北省浅层微咸水回补地下水可行性研究》(编号:2024-53)、河北省省级水利科技计划项目《河北省深层地下水回补理论与关键技术研究》(编号:2024-55)、自然资源部课题《我国典型地区大气水－地表水－地下水资源综合评估与水平衡研究——以滹滏平原为例》(编号:B201905)、国家重点研发计划项目《华北平原典型超采区地下水运动规律及深层水回补修复技术研究》(编号:2024YFC3211600)和河北省创新能力提升计划项目《变化环境下黑龙港典型区地下水与土壤盐分协同演化机制及预警调控技术》(编号:253A4202D) Supported by the Hebei Provincial Water Conservancy Science and Technology Program(No.2024-53,2024-55),the project of the Ministry of Natural Resources(No.B201905),the National Key R&D Program of China(No.2024YFC3211600),and the Hebei Provincial Innovation Capacity Enhancement Program(No.253A4202D) （编号:2024-53）
