Analysis Of Flood Disaster Factors And Risk Assessment In Longhu Coal Mine

At present,40 multi-layer coal is mined in five mining areas of Longhu coal mine.In the mining process,there have been dangerous accidents affected by water hazards.Therefore,it is necessary to evaluate the risk of water disaster in Longhu coal mine.Improve the awareness of coal mine water disaster risk prevention and control,take effective water disaster prevention and control measures to ensure the safety of coal mine production.Taking Longhu Coal Mine as a research object,collecting basic drilling materials and hydrogeological materials.Analyzing the factors causing the water hazards in Longhu Coal Mine,according to location factors and channel factors,it is determined that the main types of water hazards in Longhu Coal Mine are roof water hazards,old-fashioned water hazards,and hidden water hazards caused by mining cracks and structural fracture zones.Through 3D modeling function of 3DMine software,the self intersecting detection of the water guide fracture zone of coal seam roof and the bottom of aquifer shows that there is water guiding hidden danger around9060,9058,9055,9045,9219,9224 and 9119 boreholes in No.87 coal seam.There is water conduction in faults F17,F18,F20 and F91.The risk assessment of Longhu Coal Mine is taken from the integrated empowerment-TOPSIS risk assessment model and the integrated weight-risk index risk assessment model.Using Improved AHP Method to give index main observation weight,the variation coefficient method gives an objective weight of the indicator,and the objective correction method calculates the integrated weight of the index.The three weight comparisons are more objectively accurate.The results of the TOPSIS model assessment are the II level II,which belongs to the Safety,II-IV number III is a safer field;the V number II,the security field.The results of the II production area evaluated by the coal mine safety risk index model are II,belonging to the security field,and the remaining fabrications are III levels,which are medium security.Compared with the actual project,the weakness of the model is consistent with the actual situation,which shows that the evaluation theory is practical.Through the difference analysis of the evaluation results,it is concluded that TOPSIS model is more scientific and objective.There are 35 pictures,32 tables and 71 references.