某水厂水源置换工程水文地质条件及评价

Hydrogeological Conditions and Evaluation of the Water source Replacement Project of a Water Plant

开封市第二水厂水源置换工程新打深600 m水源井12眼,对现有水源进行置换,设计供水能力2万m^(3)/d,输水管道长约2.65 km。通过对工程区地层岩性、地下水补排条件的论述以及对抽水试验、水质分析成果的分析,提出了第二水厂的水源含水层为新近系深层地下水,水源地面积约50.24 km^(2),单位涌水量Q=4 m^(3)/(h·m),调蓄能力巨大。并强调加强对地表水、地下水的监测,掌握水质与水量的动态变化,保证水源地的水资源良性延续。

The Kaifeng Second Water Plant Water Source Replacement Project has drilled 12 new 600 m deep water source wells to replace the existing water source,with a designed water supply capacity of 20000 m^(3)/d and a water pipeline length of approximately 2.65 km.The author discusses the stratum lithology and groundwater recharge and drainage conditions in the project area.At the same time,the author completed the analysis of the pumping test and water quality analysis results.It is proposed that the water source aquifer of No.2 Water Plant belongs to the deep groundwater of Neogene system.The water source area is about 50.24 km^(2),the unit water inflow is Q=4 m^(3)/(h·m),and the regulation and storage capacity is huge.And it is emphasized to strengthen the monitoring of surface water and groundwater,grasp the dynamic changes in water quality and quantity,and ensure the healthy continuation of water resources in the water source area.