Studying On The Character Of Hydro-geochemistry In Xuchang Coal Mine

Basing on the mastery for the background of geology and hydrogeology about Xuchang coal mine sufficiently,and regarding main water-bursting aquifer(the Ordovician limestone aquifer,the Taiyuan 10th floor karst limestone aquifer and the Taiyuan 13rd floor karst limestone aquifer) as the researching object,on the basis of Ca²⁺,Mg²⁺,K⁺ + Na⁺,Cl^-,SO₄^2-,CO₃^2-,HCO₃^-, pH value and TDS,the hydro-geochemistry characters of routine hydro-chemistry and environment isotope were investigated.Saturation index model was introduced to the stady of mine groundwater chemical characteristics.Reached the saturation index of mineral in the Ordovician limestone aquifer,the Taiyuan 10th floor karst limestone aquifer and the Taiyuan 13rd floor karst limestone aquifer,and analysis hydraulic connections characteristics of the three aquifers.Though the dynamic water analysis in the main pouring water aquifer,reached the hydraulic connections in different modules of the three aquifers.The results show that pouring water aquifer hydro-geochemical characteristics can accurately judge the aquifer recharge,runoff,excretion,and hydraulic connections characteristics.According to the above,by applying methods of fuzzy recognition model,the water bursting aquifer differentiation models of the water sources were created.The research production of this paper is valuable and significant for the differentiation of water-bursting sources and the work of water prevention and cure in the coal mine.