Analysis Of Groundwater Regulation And Storage Conditions In Heilonggang Region,Hebei

Heilonggang region,Hebei located in the northeast of the province of Hebei.It's part of the Hai River Basin.Average water resource amount per capita under 200m~3 here.Because of serious exploitation,the groundwater environment faced a great challenge,groundwater adjustment and storage is a effective way to settle it.This paper analysis 4 necessary conditions for groundwater adjustment and storage:space,source of water,recharge ability,drainage ability.The aquifer of numerous ancient stream channels formed in history,is make up of large sand particle,and it has a big value of specific yield.So the ancient stream channels are good water storing space.A lot of water transfer project distribute some water to Heilonggang region every year.According related water resources policy and monitor data,the quality of water can meet class III of the surface water environmental quality standard,even class?.The residual water can recharge groundwater by artificial.Heilonggang region has established some policy to control exploiting groundwater.The surface of ancient stream channels is sand.The vadose zone in ancient stream channels has a good permeability and connectivity,there is no continuous aquitard in it,this is available for recharge,especially the surface ancient stream channels accepting precipitation recharge directly.The good permeability and connectivity of ancient stream channels result in its good drainage ability.Groundwater regulation and storage cannot use a groundwater system as a groundwater reservoir.It should build ground reservoir in favorable areas.26 regulation and storage favorable areas are chosen following:big storage space,good recharge ability and site,stable water source,integrated exploitation system.They are all located in ancient stream channels.The total area of 26 groundwater reservoirs is 3277km~2.Then,we do some detailed research into Wandi groundwater reservoir,Nangong groundwater reservoir and Quzhou groundwater reservoir.Rational distributing extraneous and local water by water transfer project,energetically actualize water-saving project,Reducing water consumption,controlling groundwater exploitation,relying on groundwater ability of natural adjustment,are the best ways for groundwater regulation and storage.