摘要：分层崩落法是一种针对矿岩均不稳固、矿体形态复杂和有用组分价值高的矿体的行之有效的采矿方法.而其独特的回采工艺特点决定其不仅具有崩落法的普遍性问题,而且还存在其特有的技术难点和安全问题.本文总结了分层崩落法回采过程中应重视的安全问题及防治防护技术,并进一步阐述了分层崩落法的发展趋势,可供国内外类似矿山借鉴.

摘要：无轨化开采是当今矿山发展的趋势,但无轨设备的应用过程中存在种种问题.为实现地下矿山无轨设备的安全、高效地应用,文章阐述了国内大型无轨设备应用过程中的主要问题,分析了BOOMER281型凿岩台车的常见故障,并提出了无轨设备安全管理的六项措施.研究结果可供类似矿山参考.

摘要：Drawing examination and approval is an important link in coal mine surveying. However, for some reasons, many problems existed in that. In the paper, the author sums up those problems found in the examination and approval of design drawing so as to draw attention to those problems, consequently, to ensure safe mine production and gaining higher economic profit