Chemical Characteristics Of Groundwater And Discriminate Models Of Water Brusting In Xingtai Coalmine

Damage by water is one of threats faced with coal mine safety. The precondition of flood control and prevention in mine is to find out the style of water bursting source. The paper takes Xingtai mine as the subject investigated. The conditions of Areal geology and hydrogeology in the mine were collected and analyzed. The features of water quality were analyzed. Then, hydrogeochemistry vertical features in groundwater were analyzed by box plot and piper. Discriminant Models of water bursting source were created with the characteristic ions (Na+K,Ca,Mg,Cl,SO4,HCO3), combined with gray relational grade, Fuzzy Mathematics, BP Neural Networks and statistics model. The conclusions are as follow:(1) Each aquifer analyzed had some differences in vertical and Transverse. In transverse, the content of Na+K ion decreased gradually from west to east with calcium ion increased. The content of chloride ion increases obviously in easternmost Xingdong mine.(2) In vertical, distribution of the six characteristic ions was the widest in sand groundwater which could not be distinguished from other something. Yeqing, Daqing and Aohui groundwater could be distinguished easily because of the Ion distribution space. Daqing and Aohui groundwater had the intersection, which showed the hydraulic connection between them.(3) According to the check of the four methods, the results were approximately identical with the difference in special ones. Precision of this method was ordered by gray relational grade, Fuzzy Mathematics, BP Neural Networks. Confusion between Daqing and Aohui groundwater showed the hydraulic connection between them.