摘要
介绍了中梁山矿务局北矿对Ｋ１煤层上阶段开采后，下阶段沿倾斜方向保护范围的考察，为开采突出煤层的突出危险性划分提供了依据，具有明显的社会经济效益。
An investigation was carried out on the protective range along the dip at lower stage after the upper stage of K 1 seam mined in the North Mine of Zhong Liangshan Coal Mining Administraion ,which provided basis for the divistion of outburst proneness for coal seams with obvious social and economical benefits.
