Research on the reasonable spacing between the mining area roadway of thick coal seam and mining terminal line

Aim at the phenomenon that the roadway is seriously effected as mining at 52 mining area, the stress distribution rule, the roadway's destruction and distortion of the coal pillars among the mining roadways are analyzed in the progress of mining using the numerical simulation. And the terminal line with 70m~80m for the 5218 working face is proposed, meanwhile after using the plan the stability of three mining roadways has the radical improvement, and this provides the safeguard for the highly effective, security mining for the mine.