论文部分内容阅读
一、水源地概况该水源地位于沣河东岸,南北长约7公里。现有生产井32口。开采深度80～230米。含水层为大厚度的砂砾石,间夹薄层淤泥质亚粘土透镜体,但无区域隔水层。在200米以上,均受河水侧渗补给。河流平均迳流量为38.35万米~3/日。大气降水量平均(1975～1977年)0.508米/年。在干旱的1977年底～1978年初连续159天河水断流的枯水期,开采漏斗面积最大达42.20公里~2。在这个范围内,大气降水平均垂直入渗量Q_s=0.04×42.2×10~6×0.508/365=2349.3米~3/日。近几年工业开采量4381～4949万米~3/年,农业
I. Overview of water source The water source is located in the east coast of the river, about 7 km long from north to south. 32 existing production wells. Mining depth of 80 to 230 meters. The aquifer is a thick gravel with a thin layer of muddy clay lens with no aquitard. In more than 200 meters, are replenished by the river side infiltration. The average flow of rivers is 383,500 meters ~ 3 / day. Average precipitation (1975 ~ 1977) 0.508 m / year. In the dry period from the end of1977 to the beginning of1978, the continuous exploitation of funnel took place for a maximum of 42.20 km ~ 2. Within this range, the average vertical infiltration Qs = 0.04 × 42.2 × 10 ~ 6 × 0.508 / 365 = 2349.3 m ~ 3 / day. In recent years, industrial exploitation of 4381 ~ 49490000 m ~ 3 / year, agriculture