一、水文地质概况与群井建设 W水源地为呈东西延展的带状平原,有两个含水层(图1)。上含水层为砂卵石承压水层,其顶板埋深为20～25米,厚度为12.6～26.0米,一般为20米。静水位埋深为5.16～1.17米。当水位下降15～25米时,其单井出水量为1500～2500米~3/日,渗透系数为20.89～25.40米/日。水质属碳酸钙型水, First, the overview of hydrogeology and well constructionW water source for the extension of the strip plain, with two aquifers (Figure 1). The aquifer is a water-bearing layer of sand and gravel, the top of the buried depth of 20 to 25 meters, a thickness of 12.6 to 26.0 meters, usually 20 meters. Static water depth of 5.16 to 1.17 meters. When the water level drops 15 ~ 25 meters, its single well water output is 1500 ~ 2500 meters ~ 3 / day, the permeability coefficient is 20.89 ~ 25.40 meters / day. Water quality is calcium carbonate type water,