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Quality Evaluation of Water from Subsidence Area and Controlling Factor Analysis:Zhuxianzhuang Case Study


Affiliations
1 School of Resources and Civil Engineering, Suzhou University; National Engineering Research Center of Coal Mine Water Hazard Controlling, Suzhou, Anhui Province, China
 

Water in the subsidence area is considered to be a potential source for solving the shortage of water in the coal mining areas. In this study, forty-eight samples from four subsidence pools in the Zhuxianzhuang coal mine, 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 significantly and the samples can be classified to be Na-Mg-HCO3, Na-HCO3, Na-HCO3 and Na-SO4 types. Quality evaluation 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 sodium carbonate (RSC) suggest that only the water from one pool can be used for irrigation directly, but others should be treated before irrigation. Relationships between major ions and statistical analysis suggest that different kinds and extents of water rock interactions are the main mechanisms controlling the chemical variations of water from different pools.

Keywords

Water Quality, Subsidence Area, Major Ions, Coal Mine.
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  • Quality Evaluation of Water from Subsidence Area and Controlling Factor Analysis:Zhuxianzhuang Case Study

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Authors

Linhua Sun
School of Resources and Civil Engineering, Suzhou University; National Engineering Research Center of Coal Mine Water Hazard Controlling, Suzhou, Anhui Province, China
Xianghong Liu
School of Resources and Civil Engineering, Suzhou University; National Engineering Research Center of Coal Mine Water Hazard Controlling, Suzhou, Anhui Province, China
Chen Cheng
School of Resources and Civil Engineering, Suzhou University; National Engineering Research Center of Coal Mine Water Hazard Controlling, Suzhou, Anhui Province, China

Abstract


Water in the subsidence area is considered to be a potential source for solving the shortage of water in the coal mining areas. In this study, forty-eight samples from four subsidence pools in the Zhuxianzhuang coal mine, 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 significantly and the samples can be classified to be Na-Mg-HCO3, Na-HCO3, Na-HCO3 and Na-SO4 types. Quality evaluation 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 sodium carbonate (RSC) suggest that only the water from one pool can be used for irrigation directly, but others should be treated before irrigation. Relationships between major ions and statistical analysis suggest that different kinds and extents of water rock interactions are the main mechanisms controlling the chemical variations of water from different pools.

Keywords


Water Quality, Subsidence Area, Major Ions, Coal Mine.

References