深井采区石门跨采变形规律

District cross-cut convergence regularity caused by over-the-roadway extraction in deep colliery

基于新汶孙村矿深部跨采采区石门的现场实测资料 ,分析了石门跨采变形与垂距的关系 ,认为跨采是深井改善巷道维护状况的重要途径 ,加大垂距可减少移动支承压力引起的变形 ,深矿井类似条件下大巷距首采煤层的垂距至少要大于 5 0

Based on the field data of over the roadway extraction the district cross cut in the deep of Suncun colliery, the relation between the convergence regularity of the cross cut and vertical distance is analyzed,the paper thinks that over the roadway extraction is an important way for improving maintenance conditions of roadway in the deep, the convergence caused by moving abutment pressure can be reduced as vertical distance increasing, and the distance between the main roadway and the coal seam first mined should be more than 50m at least under the similar condition in deep colliery.