程控自动压力平衡风门张新建１问题的提出过去我矿一直使用普通风门，靠人工启闭，而井下主要风门大多处在高风压区，风门受力很大，门体结构笨重开启风门时非常费力。在启闭过程中经常发生挤伤人员的事故，对安全生产形成极大隐患。另外因风门反复启闭使风门变形损坏严重... Programmed automatic pressure balance damper Zhang Xinjian 1 problem raised In the past mine has been using the common damper, manually opening and closing, and most of the main downhole wind in the high pressure zone, the wind force is heavy, bulky door structure to open the throttle is very laborious . In the process of opening and closing often squeeze injured accidents, the formation of a great potential safety problems. In addition, due to repeated opening and closing of the damper so that the deformation of the throttle serious ...