Chemical Characteristics And Quality Evaluation Of Groundwater In Xinwen Coalmine

The exploitation of mining affects of groundwater environment, especially to quality of mining groundwater. XinWen coalfield has half a century exploitation history, but it is the first time that the study on its groundwater quality character and evaluation. Based on the summarized of data in internal and foreign country, analyze geology and hydrologic geology of XinWen mining. This paper is combined with magnitude task of Xinwen coalfield and Rewards funds of Youth Science in ShanDong. The author reorganized and analyzed the hydrogeology data, established the XinWen Mine hydrology of analyzing database management system by use of Visual FoxPro software, realized the criterion management, provide a utility software for managed ,inquire and use of data on the scene of action. In this paper, the author studied chemistry component character and diversification rule of mine aquifers in mine, summarized chemistry distributing character of Na⁺, K⁺, Ca²⁺, Mg²⁺, HCO₃^-, SO₄^2-and Cl^- in coalfield, and analyzed diversification rule of SO₄^2-, Ca²⁺ that in Ordovician-limestone, Xujiazhuang-limestone and fouth limestone aquifers. Using the least square method bring forward the formula of movement current that quality of groundwater, and predicate the diversification current of sulfate. With theory of fuzzy mathematics, established the model of vague colligate estimate. Combined with the model with criterion of country, divide the quality of mining groundwater into several levels by evaluating 108 water samples. And evaluated contaminated grade, educed the conclusion that water quality is relatively poor and the mine contaminant are sulfate. And using the software of Groundwater Modeling System, the author simulated the feature of groundwater's flow field and solute travel.