Hydrochemical characteristics of surface and ground water in the Kuye River Basin
This paper investigated hydrochemical characteristics and sources of major ions both of the surface water and groundwater samples in Kuye River Basin.The results showed that surface water and groundwater were weak alkaline.The hydrochemical type of river water transformed from Na+-Ca2+-HCO3--SO24-to Na+-Ca2+-SO24--HCO3-from upstream to downstream.The hydro chemical type of the mine water in the upstream of the river within 5 km distance was similar to the river water and belonged to Ca2+-Na+-HCO3-,but changed to Ca2+-Mg2+-HCO3-when the distance was greater than 5 km.With increasing distance,the connection between mine water and river water became weak.The hydrochemical type of the domestic water in the mining area was similar to that of the river water and belonged to Na+-Ca2+-HCO3--SO42-when the distance was within 1 km and depth within 180 m.It changed to Ca2+-Na+-SO42--HCO3-and Ca2+-Na+-HCO3--Cl-when the distance was more than 1 km and depth than 180 m.Correlation analysis showed that SO42-was significantly correlated with Mg2+,and Ca2+ was significantly correlated with Mg2+ in river water and groundwater in upstream.It suggested that these ions came from the same source in the rocks containing carbonate and gypsum,which confirmed that mineral dissolution and cation exchange impacted the water chemical evolution.K+ was significantly correlated with SO42-and Cl-.At the same time K+,Ca2+ and Na+ were positively correlated in river water and groundwater in downstream,The cations may have come from sandstone containing feldspar.
hydrochemicalriver watergroundwatercorrelation analysisKuye River
NETL
NSTL
万方数据
维普
