Study On Water Inrush Source Synthetic Discriminant Model In Xinji No.1 Coal Mine

Water inrush is one of the main disasters in the mine, which seriously affects the safe and efficient exploitation of coal mine. The primary task of disaster prevention is the source of water inrush judgment when water inrush disaters occurr, rapid and accurate determination results can be important basis for mine water prevention and control work.Affected by Fufeng thrust fault, geological conditions、hydrogeological conditions、water inrush source (including Cenozoic loose aquifer; nappe Cambrian limestone aquifer; sandstone aquifer and limestone water in Taiyuan formation etc.) of Xinji No.l coal mine are complicated. Traditional discriminant methods discriminant effect are poorer because of the connection between aquifers complicated. It is necessary to establish the model of water inrush source discriminant under the condition of complex water filling.Taken hydro-chemical data of Xinji No.1 coal mine as the discriminant model samples and analysis hydrochemical characteristics.To process the data of original data, standardization, and principal component analysis variable discriminant analysis validity comparison test. Threshold criterion, grey correlation model is established, the discriminant analysis model and artificial neural network model are also been established. Based on the analysis on the discriminant model precision, advantages and disadvantages, using hierarchical analysis principle of discriminant model and assign weight to each models, taken individual predict classification probability score of each discriminant model as discriminant factor of synthetic discriminant model. Xinji mine synthetic water inrush discriminant model is established. Synthetic discriminant model of water inrush water back substitution test and pending inspection accuracy are ideal, can be a certain basis of mine water prevention and control work.