Experimental Study On Artificial Recharge Of Surface Water - Diving - Deep Water (spd)

Manual recharge of groundwater is adjustment project of groundwater applying rule of three-water conversion. To carry out manual recharge of groundwater, especially deep groundwater, not only increase groundwater resource effectively, but also prevent ground sedimentation calamities.Deep groundwater is buried in aquifer under surfer groundwater, because of impermeable aquifer, has weak hydraulic relation with environment. Hence, deep recharging well must be used to recharge deep groundwater, but the method leads to accretion of recharging well easily, and large amount of clear recharging water, which must be low-priced. In this paper, according to manual recharging scheme of ICWE (International Center of Water resource and Environment), writer puts forward to project of "S-P-D" recharging system (surface water recharge surfer groundwater, surfer groundwater recharge deep groundwater after filtration). By indoor experiments, penetrating mechanism is studied, and analyses influence factors, discuss premium structure of recharging well. On the basis of studies, project of "S-P-D" recharging system is designed preliminarily to recharge groundwater in Xi'an.In this paper, chapter 1 introduces present condition of manual recharge of groundwater and necessity of recharge of deep groundwater, analyses existing problems. Writer puts forward to concept of "S-P-D" recharging system and makes brief illustration. Chapter 2 introducesproject of indoor experiment of "S-P-D" recharging system; Chapter 3 studies penetrating mechanism , influence factors and premium structure of recharging well of "S-P-D" recharging system; In chapter 4, based on comparison of "S-P-D" experiment and direct well recharging, utilization of "S-P-D" recharging system is verified; Chapter 5, on the basis of indoor experiments, writer designs project of "S-P-D" recharging system according to present condition of Xi'an.Studying results manifest that: compared with direct well recharging, "S-P-D" recharging system possess merits such as quick to recharge, big recharging amount, hard to accrete an so on. It provides a new effective way to carrying out manual recharge of groundwater.