安阳市地下水含水层抽灌试验分析

Analysis on aquifer pumping irrigation test in Anyang

为查明安阳市含水层的回灌能力,采用自然重力回灌法按一抽一灌方式在不同富水地段进行了3组抽水回灌试验。结果表明:1在抽灌井结构相同或相近的情况下,含水层回灌能力和含水层的富水性有关,含水层富水性越好,同等条件下单位涌水量和单位回灌量越大。2含水层回灌能力和渗透系数正相关,渗透系数愈大,愈容易回灌。渗透系数大,不仅使抽水能力增强,也会加大回灌井的回灌能力;反之,亦然。3含水层回灌能力和岩性有关,含水层颗粒越粗,越容易回灌。

Using natural gravity irrigation method with the way of pumping-irrigation wells 1 ∶1, we made three groups of pumping recharge tests at different rich-water regions in Anyang to testify the recharge capacity of the aquifer.The results show that：①Under the circumstances of having the same pumping-irrigation wells structure, the recharge ability of the aquifer is associated with its water-rich extent.The more water the aquifer has, the greater inflow and recharge amount per unit there be.②Aquifer recharge capacity and permeability coefficient are positive correlated.The larger the permeability coefficient is, the easier the recharging process gets.③Aquifer recharge capacity is also related to the lithology.The coarser the particles are, the easier recharge process is.