Chemical Characteristics And Renewable Capability Evaluation Of Shallow Groundwater In Handan Section Of Fuyang River Basin

Understanding groundwater circulation patterns and renewable capacity is extremely important for mastering the development model of regional groundwater resources.In this thesis,the shallow groundwater in the Fuyang River Basin in Handan area is analyzed for hydrochemical analysis and renewability evaluation.This thesis is designed to analyze the Fuyang River Basin by three-line diagram,schoeller method,Gibbs diagram,ion ratio diagram,and stable isotope methods.use the radioisotope tritium and carbon 14 to evaluate the renewability of the shallow groundwater first and second water-bearing rock groups,Using the two indicators of groundwater age and renewal rate to evaluate together.First,the evolution process of surface water and shallow groundwater is analyzed based on the data of ordinary ionized water chemistry experiments.The analysis of the test results shows that chemical composition of shallow groundwater is mainly derived from the dissolution of rock salt and carbonate rock,and the runoff discharge process is mainly affected by evaporation and human activities.This is the prerequisite and necessary verification condition for the evaluation of the renewable capacity of shallow groundwater.Secondly,this thesis uses stable isotope experiments,combined with previous data to verify the source and way of replenishment of shallow groundwater in the basin,and confirms each other with the results of conventional ion analysis,and obtains a qualitative understanding of the characteristics of recharge and discharge of shallow groundwater in the basin and circulation patterns.Finally,Finally,the radioisotopes ³H and ¹⁴C were used to evaluate the renewability of the first aquifer and the second aquifer of shallow groundwater.use numerical simulation methods to ensure the validity and accuracy of the evaluation results.The evaluation results show that the overall renewal capacity along the runoff direction is reduced,and the renewal capacity is obviously higher in some areas affected by groundwater exploitation.Based on the conclusions,suggestions are made for the protection and development of shallow groundwater in the basin.