Study On The Prevention And Control Of Water Technology Of Seam Mining Under Coal Mine

Mine flood is one of the main disasters in coal mine constructionand production.Most of the coal mine in our countrycomplex geological structure,frequent water disasters accident seriously threatens the safety of mine production,is of great significance for its prevention and control.In the process of coal mining,rock move ment deformation damage to lead water fracture zones,is likely to make into the underground water in mining influence scope.This paper mainly studies the dragon coal mine no.2 coal sea m is influenced by water disasters and prevention measures.Based on the analysis of the previous hydrological geological data obtained during the process of exploration and production,on the basis of the theoretical analysis and numerical simulation method to study the no.2 coal seam of prevention and control of water disasters.According to China's mining under "three rules" and "prevention and control of coal mine water regulation is recorded by the empirical formula,the calculated conductivity fractured zone height range from 21.66 to 36.38 m.Using state of the numerical simulation of roof water damage zone height of 25 m,comprehensive analysis of the results of theoretical calculation and numerical simulation,in order to safety ultimately choose the largest33.15 m for water damage zone height of the roof.According to the regulations and the provisions on the 6 times recorded in the selection of mining height are broken 8.04 m as the protective layer thickness,ultimately deter mine the height of the waterproof coal and rock pillars is41.19 m.No.2 coal seam distance above goaf distance is 128 m,323 m distance above aquifer,500 m from surface water system.Analysis results and the ore mine geological conditions of the dragon and the actual situation of the hydrogeological conditions,this paper puts forward the sui Tablele for ore mine water prevention and control methods and measures of the Longma coal mine,that is for coal and rock pillars and grouting water plugging water,ensure safety mining.