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 HCO
3, 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.