鸭口井田下水化学特证及水水源判别研究.pdf

Subject Chemical Characteristics of Groundwater and Inrushing Water Source Identification of Yakou Coalfield Specialty : Environment Engineering Name : Xu Dong dong (Signature) Supervisor: Ju Tian yi (Signature) ABSTRACT The prerequisite of effective prevention and treatment of the mining water disaster is the correct and fast identification to the sources of inrushing mining water. In this paper, Yakou coalfield of Tongchuan Coal Group was taken as a research object. On the basis of searching and reading relative information at home and abroad, the chemical water characteristics of each main source of inrushing mining water (Quaternary, Permian sandstone and Goaf aquifer Water) are analysed and compared according to the geologic, hydrogeololgic and water + + 2+ chemistry data for years. The relationship between the content of general ions (K +Na Ca 2+ - 2- - Mg Cl SO4 HCO3 ) and TDS, the hydraulic connection among each aquifer are also analysed and studied. Further, two discriminate models of the source of inrushing mining water was set up using comprehensive fuzzy evaluation and Grey Relational Analysis respectively and then tested by means of actual case. (1)The comparison of those two models shows that the quality of the Quaternary water is HCO -Ca·Mg and HCO -Ca·Na·Mg, the Permian sandstone water is HCO -Ca·Mg, 3 3 3 HCO -Ca·Mg·Na and HCO -Ca·Na·Mg, a