Effect of artificial aquifer recharge on hydraulic conductivity using single injection well

Artificial aquifer recharge is an important measure to raise the groundwater level, prevent and remedy the environmental and geological problems caused by the over extraction. Because of the physical and chemical clogging, the performance of recharge decreased gradually and the hydraulic conductivity reduced during the recharging process. In order to reveal the changing of recharging performance, the paper took the single injection well recharge as an example to research the changing law of hydraulic conductivity. The recharge test with pressure was done in confined aquifer depth of 100 to 300m at the south suburbs of Xi´an. The results show that hydraulic conductivity of artificial aquifer recharge attenuated with time power function and was smaller than the hydraulic conductivity of pumping. When the quantity of water recharge per unit time was smaller, the attenuation of hydraulic conductivity was slower. The performance of small quantity of water recharge per unit time was better than the large.