Study on Hydrochemical Characteristics of Ordovician Limestone in Jiaozuo Mining Area

In order to understand the source of groundwater inrush and its hydrogeochemical evolution path truly, determine characteristics development trend water cycle, effectively solve problem disaster in mining area. this paper, Jiaozuo area, a typical large area North China type, is selected as study Taking Ordovician aquifer research object, Ca2+ hydrochemical equilibrium model limestone system established by analyzing concentration gradient field relationship between ions (Ca2+、K++Na+、Mg2+、Cl-、SO42-、HCO3-) TDS it made systematic on circulation, analyzed recharge, runoff discharge different areas The results show that has weak leaching effect north southwest, but strong southeast, which shows characteristic from southwest southeast.