摘要：Water in the subsidence area is considered to be a potential source for solving the shortage of water in thecoal mining areas. In this study, forty-eight samples from four subsidence pools in the Zhuxianzhuang coalmine, Northern Anhui Province, China, were collected for analysing the quality for drinking and irrigation.The results suggest that the major ion concentrations in the water samples from different pools vary significantlyand the samples can be classified to be Na-Mg-HCO 3 , Na-HCO 3 , Na-HCO 3 and Na-SO 4 types. Qualityevaluation for drinking based on water quality index suggests that all of the samples are suitable for drinking(considering only the major ion concentrations). However, sodium adsorption ratio (SAR) and residual sodiumcarbonate (RSC) suggest that only the water from one pool can be used for irrigation directly, but othersshould be treated before irrigation. Relationships between major ions and statistical analysis suggest thatdifferent kinds and extents of water rock interactions are the main mechanisms controlling the chemicalvariations of water from different pools.
