The Hangzhou Bay New Area is located in a coastal plain area where the groundwater storage environment is relatively fragile and lacks water resources. Recognizing the regularity of groundwater circulation in this area and conducting an analysis of the evolution of groundwater quality can provide support for its potential as an emergency groundwater source. In order to assess the impact of emergency groundwater extraction on the surrounding environment, a 3-D groundwater flow and a solute displacement model were developed to quantify changes in water level, groundwater recovery capacity, salinity, and landing funnel. The numerical model was calibrated by values recorded with the actual observation well and solved by MODFLOW and MT3DMS modules in GMS (groundwater modeling system). The simulation results indicated that under the conditions of emergency grades I, II, and III, the maximum depths of the water level in the half year of mining were 38.5 m, 24 m, and 18.5 m, respectively, the areas of dropping funnel were 53.75 km², 33.026 km², and 25.273 km², respectively, and the widths of saltwater intrusion were 931 m, 585 m, and 413 m, respectively. The numerical simulation provides a reference for the rational allocation, development, and utilization of groundwater resources in the emergency water source area of the Hangzhou Bay New Area.

杭州湾新区位于沿海平原地区，那里的地下水储存环境相对脆弱，水资源匮乏。认识到该地区地下水循环的规律性并进行地下水质量演变分析可以为其潜在的应急地下水源提供支持。为了评估紧急开采地下水对周围环境的影响，开发了3-D地下水流量和溶质驱替模型，以量化水位，地下水回收能力，盐度和着陆漏斗的变化。数值模型通过用实际观测井记录的值进行校准，并通过GMS（地下水建模系统）中的MODFLOW和MT3DMS模块进行求解。²，33.026公里²，和25.273公里²分别和盐水入侵的宽度分别931米585 m和413米，分别。数值模拟为杭州湾新区应急水源区地下水资源的合理配置，开发利用提供参考。