[Characteristics of Surface Water and Groundwater Chemistry and Controlling Factors in the Centralized Coal Mining Area of the Yellow River at Several Bends in the River].
摘要
·Cl-Na type. The hydrochemical formation process of surface water and groundwater was dominated by water-rock action and cation-exchange action， in which the weathering and dissolution of silicate rocks dominated. The water chemistry of groundwater in the mixing simulation was lower than that of surface water， and the mixing had a diluting effect on the water chemistry of surface water. PCA-APCS-MLR source analysis identified three main controlling factors， namely， the dissolution-filtration-enrichment factor， primary geologic factor， and human activity factor， among which， the dissolution-filtration-enrichment factor was the first controlling factor for the formation of water chemistry. The results of the analysis can provide a scientific basis for the rational development and utilization of water resources in the mining area.