The Qinan Mine 349 Safety & Integrated Control Technology,

Prevent and control gas calamity is one of technique difficulty for safety and efficient product in coal mining in our country. Gas calamity is shown obviously in two aspects: one is gas explosive, and the other is coal and gas outburst. The present thesis is mainly based on the geological condition of Qinan coal mining of Huaibei mining group, and integrative gas prevent and control technology in the process of drivage and mining No. 349 working place is studied.This present thesis is based on the geological parameters of drivage mining and geological condition of Qinan coal mining of Huaibei, analyzes the rule of stress distribution of the drivaging coal roadway. Through numerically simulation stress distribution of the No. 349 drivaging coal roadway, the stress concentrated zone is analyzed, and this provides theory gist to efficiently prevention and control method. Through field mensurate the gas omission of drivaging coal roadway, the rule of gas omission of drivaging coal roadway is controlled, and this can guide prevention and control gas calamity work.The No. 349 working place is the second working place that takes advantage of gas drainage, and the application of integrative gas prevent and control technology of high gassy and low permeability coal seam is very successful. The value of gas omission is 5m~3/min of drivaging working place, and 633m roadway is drivaged in one month. The value of gas omission is 25m~3/min of working place, and 5000t coal is producted in one day. The gas value unlimited phenomenon is stopped. And realize safety product. And this provides foundation materials for further safety product of high gassy working place in Qinan coal mining.