Study on the Infiltration and the Storage Capability of Artificial Adjustment on the Yongding River Groundwater Reservoir in Beijing

The upper-middle of the Yongding River alluvial-proluvial fan meets the basic requirements to establish a groundwater reservoir.Based on the investigating thoroughly of the artificial recharge methods of the Yongding River groundwater reservoir,this paper further analyzes the infiltration ability of all recharge methods,proposes the corresponding artificial recharge engineer scheme.By the results of the numerical simulation of groundwater and the effective water storage rate formula,the groundwater storage capacity of the reservoir was first studied,and the effect of recharge of groundwater reservoir was analyzed.The result demonstrated that the maximum of recharge ability is 18.93m~3/s and the maximum of groundwater level rise is 32m,the groundwater storage is recovered about 2.09×10~8m~3 when the total artificial recharge quantity was 2.42×10~8m~3.The effective water storage rate was respectively about 78.6% and 46.8%after 1 and 5 years.It indicated that the groundwater reservoir have preferable adjustment effect, recharge ability and storage capacity.