Development potential and evaluation of groundwater resources in Tongguan County
Tongguan county is one of the important industrial zones of gold mining,processing,smelting and processing,which is located in the Qinling Mountains,Yellow River and Weihe River terraces.In the past,the exploration and evalua-tion of groundwater resources in this area is not systematic and localized.The exploitation of mineral resources in the area leads to the unreasonable exploitation of renewable groundwater resources,and the unreasonable exploitation in some areas leads to problems such as the decline of groundwater level,pollution of water environment and deterioration of ecological en-vironment.On the basis of systematic analysis of previous research results,using hydrogeological and mining status investiga-tion,surface geophysical,pumping test and water quality test,we obtain comprehensive scientific and technical data,and cal-culate relevant hydrogeological parameters,water resources and exploitation potential.The study area's groundwater natural recharge is 127 774.45 m3/d,storage is 4 434 806 024.0 m3,natural recoverable resources are 87 414.80 m3/d,and the remaining exploitation resources are 33 464.12 m3/d.The groundwater recoverable amount and exploitation potential in the research area is medium level,and suggestions for development and utilization are put forward.