南通沿海地区主采层地下水咸化特征

Ⅲ承压水为南通市地下水主采层，全区性开采。经过数十年的大量或过量开采等人为因素的影响，主采层水位呈现持续下降的态势，改变了含水层组内部和含（隔）水层组间的原始相平衡状况，因而其水质相应地发生了一定的变化、以南通沿海地区为研究区域，通过不同时期水质状况的分析对比，揭示了区内主采层地下水咸化的变化特征，为加强地下水资源的科学规划管理，保护地质环境提供了一定的依据。

On salination properties of main groundwater mining strata along costal region in Nantong

No.3 confined water is the main groundwater mining aquifer in Nantong.And nowdays,the level showed a decreasing trend because of tens of years extraction for groundwater and human factors,the original balance state between the aquifers interior and waterproof beds changed,that resulted in a certain change of water quality.Based on the study of coastal Nantong region,and through analyses and contrast of water quality in different periods,the author opened out the variation properties of groundwater salinatio...