北京矿务局杨坨矿三段,特邀有四十余年井下工令的老工人陈长林,在传经会上介绍了安全生产经验。一、压劲和拧劲。下井首先要听棚子的动静,要看棚子的状态。若是棚子腿被压裂,或者梁被压裂,就是压劲;如果上面一点点来 Beijing Mining Bureau Yang Tuo mine three sections, invited more than 40 years of underground work order of old worker Chen Changlin, introduced in the pass by the safety experience. First, the pressure and twisting strength. Go down the first to listen to shed news, depending on the status of the shed. If the shed legs are fractured, or the beam is fractured, it is pressure; if the above a little bit