Abstract:

Considering the different annual variation between the resource area and accept area during the construction of Hutuo River groundwater reservoir, which uses the transfer water of South-to-North transfer water project and local floodwater as the recharge water, based on the analyses of precipitation encounters between Han River basin and Shijiazhuang City, applied fuzzy mathematics and multi-dimension combined distribution probability method in the analysis of precipitation plentiful-scanty encounter character between Han River basin and Shijiazhuang City,  the fuzzy weighted recharge of groundwater reservoir in Hutuo River was calculated, and the artificial recharge effects under different plentiful-scanty encounter were simulated applied numerical method. The results show that, the available infiltrate water under different plentiful-scanty encounters has been calculated as (4.64-8.72)×10⁸m³/a，the fuzzy weighted recharge is 6.66×10⁸m³/a, artificial recharge can make groundwater level enhanced 1.47-3.45 m/a, the effective storage rates of groundwater reservoir are between 80% and 90%， because of the growth of lateral out-flow inspired by artificial recharge increase，the effective storage rates fall.

Key words: Hutuo River, groundwater, reservoirs, artificial recharge, plentiful-scanty encounter, fuzzy mathematics, effective storage rate