Mine water quality characteristics and water environment evaluation of Inner Mongolia Dongsheng coal field

Taking Inner Mongolia Dongsheng coal field as research object,guided by geochemistry,coal chemistry,mine geology,hydrogeology and so on,collect water samples pertinently,then test its pH value,total hardness,SO42-,Cl-and HCO3-concentration.Analyse the assay results of water quality on the basis of field geological investigations.Combining the evaluation methods for mine water with water quality mathematical models,made statistics and calculations with grey clustering method,through the evaluation index of three factors including total hardness,Cl-and SO42-.The results show that,the mine water quality of Dongsheng coal field is middle-better type,good underground water cover 39 percent and Ⅲ-type underground water cover 44 percent,it is Ⅲ-type underground water environment.