Study on water source displacement and underground water pressure extraction in typical receiving areas of Yangtze River and Huaihe River
The social and economic development in north Anhui province depends on groundwater for a long time,which leads to the problems of groundwater overdrawing and falling funnel.The Regulations on the Management of Groundwater put forward higher and stricter requirements for the development,utilization and protection of groundwater,and clearly stated that the comprehensive treatment of groundwater over-exploitation should be promoted,and the exploitation and prohibition of un-derground water pressure should be carried out.The implementation of the project provides good conditions for regional water source replacement and underground water pressure exploitation.Taking Bozhou City,a typical water receiving area of the Yangtze River and Huai River,as a typical research area,this paper compares and discusses the schemes of urban and rural water source replacement in various counties and districts,and determines the schemes of groundwater exploitation well pres-sure production.The results are as follows:Bozhou is one of the five water-scarce cities in Anhui province,with poor water resource endowment conditions,and is a typical area where resources,engineering and water quality coexist.Groundwater is the main water source for urban and rural life,industrial production and agricultural irrigation.Due to long-term concentrated exploitation of deep groundwater,Qiaocheng District,Gujing Town,Guoyang County,Mengcheng County and Lixin County have formed different degrees of groundwater over-exploitation areas.The river diversion project provides good conditions and possibilities for groundwater replacement and pressure mining in north Anhui,and the replacement of urban and rural groundw-ater sources is feasible in all counties.With the gradual completion of the construction of surface water plants,it is expected that 802 groundwater extraction Wells can be closed in Bozhou City by 2030,and the well sealing rate is 92.2％;The amount of compressed groundwater extracted was 184 million m3.Through the replacement of water source and the exploitation of un-derground water pressure,the existing water supply pattern can be changed,and the rational development,utilization and pro-tection of groundwater resources can be realized.
diverting river to Huai water receiving areawater source displacementunderground hydraulic miningBozhou City
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