早在五十年代的初期,我国的鸡西、峰峰等矿区,就已在薄和中厚煤层中采用了无煤柱开采技术。近三十年来,无煤柱开采得到比较广泛的推广和应用,并取得了很大成果。但是,无煤柱开采技术在厚煤层的分层开采中,在易燃煤层中,推广和应用的不够普遍。除在有关技术攻关的一些问题尚未得 As early as the early 1950s, China’s Jixi, Fengfeng and other mining areas, have been in the thin and medium-thick seam with non-pillar mining technology. In the past three decades, non-coal pillar mining has been widely promoted and applied, and great achievements have been made. However, non-pillar mining technology in the thick seam mining, in the flammable seam, the promotion and application of less than universal. In addition to some issues related to technology research yet to come