掩护梁
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two-leg sublevel caving shield support 两柱掩护式放顶煤支架
low-position shield and top-caving 掩护式低位放顶煤
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This paper analyze the problems of expanding mining caving lightly set-up room with traditional shield support, it took the influence to join caving lightly workface.
分析了在复杂的地质条件下 ，采用传统的架棚支护在扩掘大断面轻放切眼中出现的问题 ，给轻放工作面衔接带来的影响。
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