短臂-煤礦安全生產網

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羊東礦短臂注水+長臂注水效果佳

　　今年以來，羊東礦采用短臂注水和長臂注水相結合的創新方式，達到降低回采工作面煤塵和瓦斯效果?！　≡摰V在8267回采工作面施工短臂注水鉆孔，同時在8267運料巷3鉆場和千米鉆機鉆場施工長臂注水鉆孔。利用ZDY—3200S型鉆機和ZDY12000LD型鉆機施工長臂鉆孔可...

礦局快報 2022-11-27 羊礦短臂長臂效果

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