介绍射流巷道式通风技术在板桃隧道施工中的应用，这一新技术与传统的巷道式通风相比有新的突破。
An introduction is given to jet flow gallery ventilation technology and its application to Bantao Tunnel. This technology is a breakthrough compared with conventional gallery ventilation technology.
本实用新型公开一种煤矿巷道通风系统的风流控制装置，尤其是一种矿山可缩式风流控制风门。
The utility model discloses an air flow control device of a coal mine lane ventilation system, in particular relates to a mine retractable air flow control air door.
本实用新型公开一种煤矿巷道通风系统的风流控制装置，尤其是一种矿山可缩式风流控制风门。
The utility model discloses an air flow control device of a coal mine lane ventilation system, in particular relates to a mine retractable air flow control air door.
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