江苏南通部分地区深层地下水咸化成因及对策

为了解江苏南通部分地区深层地下水水质咸化的状况及产生原因，对全市深层地下水的3个开采阶段进行了初步分析。找出了导致该地区深层地下水咸化的原因为：多年高强度开采、隔水层薄弱地区的越流补给、不规范的成井工艺等改变了深层地下水的正常流动与补给。根据研究结果，提出了加强开采管理、根据水文地质条件科学布井、强化取水许可全过程监管、全面回填报废管井等综合应对措施。

Cause analysis of deep groundwater salinization in partial area of Nantong City and countermeasures

A preliminary analysis on the 3 stages of deep groundwater mining in Nantong City is conducted to investigate the causes and condition of deep groundwater salinization.It is pointed out that high intensity mining over years,leaking recharge in weak aquifuge area and irregular drilling technology lead to change of normal flow and recharge of deep groundwater.According to the results,countermeasures are proposed,such as strengthening mining management,rationally arranging drilling well according to the hydrogeology condition,strengthening water intake permits and backfilling the abandoned well.