摘要
对东升庙铅锌矿矿柱的形成与分布进行分析和调查。随着矿柱的回采,空区暴露面积增大,其冒落形成的空气冲击波将会造成巨大的危害。运用空气冲击波理论,计算了采空区临界冒落面积,得出空区允许的最大跨度为159m;对不同回采顺序的矿柱应力分布进行了分析,最终提出了从中央向端部推进的矿柱回采顺序。
The occurrence and distribution of ore pillars was analyzed and investigated.With the recovery of ore pillars and the increase of exposed area in mined-out areas,rock caving may happen,and air shock wave caused by rock caving may result in great harm.The critical collapse area of mined-out area was calculated by use of shock wave theory,and the calculated maximum of permissible span of mined-out area is 159 m.The distributions of pillar stress for different recovery sequences of pillars were analyzed.The pillar recovery sequence from the centre to two ends was advanced.
出处
《矿业研究与开发》
CAS
北大核心
2011年第2期4-7,共4页
Mining Research and Development
关键词
矿柱回采
空气冲击波
平衡拱
临界冒落面积
回采顺序
Recovery of ore pillars
Air shock wave
Balance arch
Critical collapse area
Recovery sequence
