矿井运输巷道风门是通风管理中的一项重要工作。我井+115运输材料道甩车场是主井总入风道和付井总排风道联络的咽喉,过去主要是采用单扇和双扇拉杆自动风门。由于该处巷道通风负压大,矿车放车速度快,风门经常被撞坏,修理时漏风量大,不但威胁安全生产,而且浪费材料,费工费时。根据这种情况通风段党支部组织全段工人认真学习毛主席亲自批示的《鞍钢宪法》和“抓 Mine transport tunnel damper is an important work in the ventilation management. I Well +115 transport material road rejection yard is the main shaft into the air duct and pay the total exhaust duct contact throat, the past is mainly used single-and double-lever automatic throttle. As the roadway ventilation negative pressure, car car speed, throttle often crashed, repairs, air leakage, not only threaten the safety of production, and waste of materials, time-consuming work. According to this situation, the ventilation section of the Party branch organized all the workers to conscientiously study the “Ansteel Constitution” and "