Study On The Technology Of Pingdingshan Twelve Mine Upper Protective Coal Seam Exploitation

Along with the increase of coal mining depth, and gas and coal and gas outburst mine increases gradually, how to take effective measures to realize safe efficient mining in mining workers beco me the i mportant task before. Protective Coal Sea m Exploitation is coal and gas outburst prevention and control in the construction is si mple, the best effect, lowest cost of regional measures.Through the research on the Protective Coal Sea m Exploitation, Twelve mine Upper Protective Coal Sea m Exploitation for engineering research background. In mine pressure and elastic mechanics, cover mechanis m, coal and gas outburst based on theory. The theory of elastic mechanics calculation, nu merical si mulation analysis, similar material si mulation test, the pressure relief gas extraction technology, strengthening method. Syste matic study on the protective layer mining technology, Analysis of the strata move ment defor mation law and pressure relief effect in different mining height are broken and the vertical stress change rule and displace ment distribution, coal defor mation law Cover open coal rock mass mechanics characteristics According to cover yourself and the actual geological conditions ofå·±14coal seaDesign mining roadway layout and mining technical para meters, Deter mine the cover haså·±14coal mining method. Consider equip ment selection. Specific reasonable gas extraction treat ment measures, To cover yourself andå·±14coal sea m and the cover haså·±is coal sea m in gas extraction, Design the gas extraction sche me, to the coal and gas outburst prevention and control effect. The result of this paper can further enrich the protective layer on the develop ment of mining technology, solve the leveling twelve mine coal and gas outburst mine safety production is of great significance.