Research On The Optimization Of Mine Water Inflow Prediction Method In Panxie Mining Area

Mine water inflow is an important evaluation index of the complexity of mine hydrogeological conditions,and is also the basis for mines to develop mining plans and drainage systems.In the process of mine exploitation,the accuracy of mine water inflow prediction is of great significance to ensure the safe mining of coal mines,prevent the occurrence of flooding accidents and achieve high-efficiency mining.Mine water inflow is the comprehensive manifestation of hydrogeological conditions in the mining process.Different water and geological conditions have different rules for water inflow from mines,and the gushing patterns in the same hydrogeological unit are similar.Therefore,mines with different hydrogeological units use the same formula to calculate the amount of water in the mine,resulting in greater errors.In order to more scientifically predict the water inflow from each mine in Panxie mining area,according to the geological structure and hydrogeological conditions,the Panxie mining area is divided into three hydrogeological units:loose layer recharge area,limestone recharge area,and nappe recharge area.Based on the study of the applicability conditions of existing mine water inflow prediction methods and the differences in the specific hydrogeological conditions of different hydrogeological units in the Panxie mining area,the reasons for the errors between the predicted inflow of water in the mine and the measured inflow of water are explored.Based on the comprehensive consideration of the existing water inflow forecasting theoretical techniques and methods,combined with the specific hydrogeological conditions in the Panxie mining area,the influencing factors of the mine water inflow were determined,and the weight distribution of the influencing factors of the mine inflow was determined based on the improved analytic hierarchy process.Combining the integrity of the existing data of the mining area with the actual conditions of the mining area,establishing a prediction model for the inflow of water in panxie mining area,and using the prediction model of water inflow,the method for predicting the in-situ inflow of water in different hydrogeological units in Panxie mining area Optimize and determine the optimal prediction method for mine inflow in different hydrogeological units.Through the verification of engineering examples,the results calculated with the optimized water inflow prediction method are in good agreement with the measured influent water volume.Therefore,the established prediction model of mine water inflow in the Panxie coal mine can provide support for the prediction of mine water inflow in the mine.