Study on coordinated development mode of coal and gas in medium and long distance seam group

in order to soive the difculty of coal and gas development in the medium and long distance ceal seam group.taking Yangquan No. 5 Mine of the study object.based on the site seam.gas basic paramneters the seam and gas depositin featues weredefned. From the contradiction and identtyof the ceal and gas developmen in the time-space aspects thepaper analyzed the mutual ifuences between coal mining and gas drainage The paper studied the time-space relationship of the .oal and gascoordinated develogmen, based on the coal and gas cordinated develogmert status in Yangquan Na 5 Mine,the paper provided that the time and space .onnection betwieen the gas pre-drainage before the mining operation cnducted and the pressue released gas drainage during the mining percd woul be the key technology to be solved for the coal and the gascoordinative development in the mediun and long distanceseam grou . wih the referencesofthee block linking node inJincheng !Mlining Area.the coal and gas coordiative development modeof the medium and long distance seam group was discovered and obtained.T'he demo of the development mode was conducted in Yangquan No.5 Mine,so as to provide the techrical supor to the safty and high eficient prodvction for sinilar geologcal condti.n.