滹沱河地下水库建设条件分析

An analysis of construction conditions of Hutuo river groundwater reservoir

对滹沱河地下水库建设条件进行了分析,得出如下结论:滹沱河地下水库边界为一近封闭的边界,库容量达10.04×108 m3,滹沱河河床可作为地下水库天然渗漏场。通过入渗试验得出,在动水条件下,单位河长稳定入渗量为29.18×104 m3/km.d(平均河道宽度222m),入渗速率1.31×104 m3/m2.d,垂直入渗系数31.62m/d,入渗水对地下水的补给系数为0.91。利用库区原有的取水设施年开采能力可达2.19×108m3。根据预测结果,2020、2030年在不同的保证率下,尚有盈余水量进行地下水库的调蓄,且调蓄水源的水质对地下水水质影响不大。

In this paper, the construction conditions of the Hutuo river groundwater reservoir are analyzed. The following conclusions can be drawn. The boundaries of Hutuo river groundwater reservoir are nearly closed,and the storage capacity is as high as 10.04 x 108m3. The Hutuo river bed can be used as natural groundwater reservoir leakage field. The infiltration test show that on the dynamic water conditions, stable infiltration amount per unit length of river is 29. 18 x 104m3/ km · d （average channel width is 222m） , infiltration rate is 1.31 x 104m3/ m2 · d, vertical infiltration coefficient is 31.62 m/d, and recharge coefficient of infiltration water into groundwater is O. 91. Using the original water intake facilities the annual exploitation capacity can be up to 2.19 x 10Sm3. Based on forecast results,under different guarantee rate in 2020 and 2030, surplus water can be used for storage and regulation of the groundwater reservoir, and the regulating water quality has little effect on groundwater quality.