要爱护井下的通风设施风门，是煤矿井下的通风设旋，它就像一个忠诚的卫士，日夜守卫在井下进风流与回风流的交汇点上，不让新鲜风流“偷懒”跑掉，也不让污浊风流越雷池一步，保证了矿井的安全和职工的身体健康。煤矿井下环境特殊，井深巷远，不安全因素多。为了创造井下... Ventilation to protect the underground ventilation door is the coal mine ventilation facilities, it is like a loyal guard day and night guarding the downhole into the air flow and return air flow at the meeting point, not to let the fresh romantic “run away” or not Let pollute flow more thunder pool one step, to ensure the safety of mine and the health of workers. Coal mine environment is special, deep well alley, insecure and more. In order to create the underground ...