1988年8月9日,湖南涟邵矿务局牛马司矿水井头主井井底的东罐(滚筒上出绳侧)上提、井口的两罐(滚筒下出绳侧)下放之初,提升机处在加速阶段时,突然西侧罐笼的钢丝绳于滚筒出绳处破断,罐笼坠入井底(此时,深度指示器指示运行距离17m)。事故发生后,更换了两根主提升钢丝绳和西侧罐笼。为检查罐道是否存在问题,8月14日零时进行空罐试车,两罐于井筒中交会后,利用惯性自由滑行至距井底30m处即 August 9, 1988, Hunan Shao-Shao Mining Bureau cattle main shaft at the bottom of the main shaft Jingdong mine (drum on the rope side) on the mention, wellhead two cans (drum out of the rope side) decentralization at the beginning, When the hoist is in the acceleration phase, the steel wire rope of the western cage suddenly breaks at the drum out of the rope, and the cage crashes into the bottom of the well (at this moment, the depth indicator indicates the running distance of 17m). After the accident, two main hoisting ropes and west cage were replaced. In order to check whether there is a problem with the tank road, an empty tank test was carried out on August 14 at 0:00. After the two tanks were rendezvous at the wellbore, they were free to coast to a distance of 30 m from the bottom of the well