雄安新区浅层地下水监测网建设及地下水动态变化特征分析

    Construction of shallow groundwater monitoring network and analysis of groundwater dynamic variation characteristics in Xiong'an New Area

    • 摘要: 为及时准确地掌握雄安新区地下水基础信息,保障新区大规模工程建设的有序推进和“水城共融”的生态城市建设,实施了浅层地下水监测井建设工程。该工程进一步厘清了雄安新区50 m以浅地层的水文地质条件,利用克里金插值、统计分析等方法对浅层地下水水位、水质进行了分析评价。该浅层地下水监测井工程对雄安新区50 m深度范围内潜水和微承压水等第四系松散含水层孔隙水水位进行了分层精细化监测,建成的地下水综合监测网具有数据采集、信息传输、分析评价及成果服务等多种功能。雄安新区50 m以浅浅层地下水埋深为1.39~27.52 m, 存在3个降落漏斗,分别位于雄县北沙口乡、容城县起步区西部和安新县芦庄乡。水质评价结果显示,浅层地下水水化学类型以HCO3型为主,地下水质量以Ⅳ、Ⅴ类为主。该浅层地下水监测网的建设实现了雄安新区50 m深度范围内地下水全面、系统的监测,大幅提升了浅层地下水信息的时效性和准确性,为支撑服务雄安新区高质量建设和水资源精细化管理提供了基础数据。

       

      Abstract: To timely and accurately grasp the basic groundwater information in Xiong'an New Area, and ensure the orderly advancement of large-scale engineering construction in the area and the construction of an ecological city with the theme of "water-city symbiosis", the shallow groundwater monitoring well construction project was implemented in this area. The hydrogeological conditions of the strata within 50 meters below the surface in Xiong'an New Area have been further clarified through this project. The Kriging interpolation and statistical analysis were used to analyze and evaluate the monitoring results of shallow groundwater levels and water quality. The shallow groundwater monitoring well construction project conducted stratified and refined monitoring of pore water levels in Quaternary unconsolidated aquifers such as phreatic water and micro-confined water within a 50-meter range of Xiong'an New Area. A comprehensive groundwater monitoring network has been established, including data collecting, information transmission, analysis assessment and achievement service. The burial depth of shallow groundwater within 50 meters below ground surface in Xiong'an New Area ranged from 1.39 to 27.52 m. There were three drawdown cones, located in Baishakou Township of Xiong County, the western part of the starting area in Rongcheng County, and Luzhuang Township of Anxin County respectively. The water quality evaluation results show that the main hydrochemical type of shallow groundwater is HCO3, and the groundwater quality was predominantly of Class Ⅳ and Ⅴ. The construction of this shallow groundwater monitoring network has achieved comprehensive and systematic monitoring of groundwater within a 50-meter depth range of Xiong'an New Area, and greatly improved the timeliness and accuracy of shallow groundwater information, providing basic data for the high-quality construction of Xiong'an New Area and the refined management of water resource.

       

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