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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 formation and distribution of Dongshengmiao lead-zinc ore pillars are analyzed and investigated. With the mining of pillars, the exposed area of the empty area increases, and the air shock wave formed by the collapse will cause great harm. Using the air shock wave theory, the critical area of the caving area was calculated, and the maximum span allowed by the empty area was calculated to be 159m. The stress distribution of the pillars of different mining sequences was analyzed. Finally, the ore mined from the center to the end Column mining sequence.