Application Of Water Quality Analysis In Discrimination Water Source Of Water Inrush In Mine

In China,the most of hydrogeological conditions of coal mines are complex,the damage of the mine water disaster is serious,the source and channels of the water inrush are diverse.Once the abnormal water gushing occurs,it is very important for the safe production and the rescue to identify the gushing water source quickly and accurately.The mine water has different hydrochemical characteristics because of its storage conditions and the diversity of recharge runoff conditions.The identification of mine water source mainly uses hydrogeochemical content and mathematical theory,combine the professional knowledge of mine water inrush prevention and control.The method of identifying the source of water inrush was put forward to the daily production of mine,the abnormal increase of mine water gushing and the collapse column process.On the basis of mastering the overall hydrogeological conditions of the mining area,the distribution of the aquifer and the water quality characteristics of the water source are studied.The mine has accumulated a lot of conventional hydrochemical data in daily work.The compilation of these data is the basis for identifying the source of outburst water.The mine of Kailuan Donghuantuo is selected as the research object,collecting,sorting and analyzing the hydrogeological conditions of the mine,collecting the water samples of each aquifer to carry out the routine water chemical composition detection,and using the results as the basic hydrochemical data to excavate the hydrochemical characteristics of the main aquifers in the study area and extract the characteristic ions of each aquifer.A preliminary method for identifying the water source in the mine is built.Based on the SPSS software,the Fisher discriminant model and Bayes discriminant model are established to identificate mine outburst water sources,which improves the accuracy of mine water source identification.The water gushing amount caused by the suspected collapse column in the 3086 working face of the Donghuantuo mine increased.The water source identification was carried out by the preliminary identification method of characteristic ions and the mathematical discriminant model.It was found that the result of the characteristic ion discrimination method was not accurate enough.The Fisher discrimination model and the Bayesian discriminant model were used to distinguish the water source.The results of identification and analysis show that the water quality of the suspected collapse column is complex.It is proved that the suspected collapse column is directed upward into the Quaternary aquifer and down to 12_-2 coal floor aquifers,which provides the basis for the next step of flood control.