The Jiangdu area is located at the interchange of the Yangtze River Delta and the Lixiahe Plain.The Quaternary loose layer has a large thickness and aquifer developed by the Yangtze River and the Huaihe River.The thickness, particle, Water-based differences.By comparing and analyzing the hydrogeological structure of the Quaternary aquifer in Jiangdu area, it can be seen that the Quaternary aquifer has the characteristics of large thickness, small sand layer, coarse grain and abundant water, and the lithology of the aquifer is finer, , Fine sand mainly sand layer thickness and was layered, aquifer between the development of a greater thickness of the stability of the aquifer, the water in general.At the same time, through the analysis of the present situation of groundwater exploitation in Jiangdu area, it is found that due to the increase of mining wells and exploitation in Jiangdu District, the water level declines year by year and triggers land subsidence in Jiangdu area.It should adopt strict groundwater exploitation management, scientific and rational exploitation of groundwater reasonable control water level, Strengthen the rational utilization of shallow groundwater resources and groundwater emergency water source construction and other measures to quantify the relationship between groundwater and ground subsidence, to determine the distribution of mining wells, mining and control of water level for the rational allocation of water resources in Jiangdu provide the basis for support, Which provides the basis for the study and prevention of ground subsidence mechanism.%江都地区位于长江三角洲平原和里下河平原的交汇处,第四纪松散层厚度大,含水层发育,受长江和淮河两大流域沉积影响,不同地区含水层厚度、颗粒、结构和富水性差异较大.通过对比分析江都地区第四纪含水层水文地质结构可以看出,第四纪含水层具厚度大、砂层层次少、颗粒粗、水量丰富等特点,含水层岩性较细,以中细砂、粉细砂为主,砂层厚度薄且呈多层状,含水层之间发育厚度较大的稳定隔水层,水量一般.同时通过对江都地区地下水开采现状分析发现,由于江都区开采井及开采量逐年增加,水位逐年下降,并引发了江都地区的地面沉降,应采取严格地下水开采管理、科学合理开采地下水合理控制水位、加强浅层地下水资源合理利用和地下水应急水源地建设等措施,量化研究开采地下水与地面沉降的关系,合理确定开采井的分布、开采量和控制水位,为江都区水资源合理开采提供基础支撑,为地面沉降机理研究和防治提供了基础.
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