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一种可取代矿井通风系统中的自动风门及风量调节物筑物。且不妨碍视线,可靠性强的新型矿井空气幕在湖南湘潭锰矿研制成功。这种新型矿井空气幕采用多台小型小功
A mine ventilation system can replace the automatic door and air volume control buildings. And without prejudice to the line of sight, a new type of mine air curtain with high reliability was successfully developed in Xiangtan, Hunan. This new mine air curtain uses multiple small small work