Research On Influencing Factors And Control Of Rock Burst In Menkeqing Mine

In recent years,with the transfer of coal mining to deep areas,rockburst has become one of the most dangerous mine disasters in deep mining.Therefore,how to forecast the rockburst fimely and accurately,master the mechanism and law of rockburst occurrence,establish a scientific and reasonable prediction system and put forward complete and effective technical measurres to solve the danger has very urgent and important significance.Based on the research background of 11-3102 fully mechanized mining face in Menkeqing coal mine of huji' erte mining area in Inner Mongolia,through theoretical research,numerical simulation,field measurement and other.comprehensive research,the formation factons and mechanism of rockburst induced by mining face in this mine are analyzed fteoretically,and it is clear that the rock burst type in this mine belongs to "roof leading type".The comprehensive index method and multi factor superposition method were used to commprepensively evaluate the impact risk index and grade of 11-3102 working face,and the nisk degree of each area of the working face was further divided.Combined with the impact risk deoree and risk area division,from the perspective of regional prevention and control scheme optimization,the underground mining layout,section coal pillar width and stoppage Time are optimized;from the perspective of active local danger relief,measures such as roedway side large-diameter borehole pressure relief,roof deep hole blasting,hydraulic fracturing and other measures are formulated for the underground driving roadway and mining face,and the coal body pressure relief has achieved ideal effect As a result,after the implementation of comprehensive prevention and control measures,the goal of relieving pressure and avoiding rock burst disaster has been basically achieved,which provides guarantee for safe and efficient production of Menkeqing coal mine.