盘区脉外溜井破坏原因分析及井筒维护

近年来,金川公司二矿区溜井出矿系统发生事故的频率越来越高,严重影响二矿区的生产安全。通过数据统计和现场调查的方法,研究和分析了盘区脉外溜井破坏的主要原因,提出了以加强溜井井壁支护强度、减少爆破破坏几率等为主导的井筒维护措施。通过一年多的放矿实践,证实这种维护技术是可靠的,并取得了良好的经济效益。

Maintenance and Destroy Cause Analysis of the Ore Pass out of the Vein

The system of the ore pass was often happened accidents in recent years in the No2 mine,Especially revealing serious problems about it in 2007,for instance,The pass was collapsed which including 1000m level 1#、5#、6# ore pass out of the vein,and 1150-1000m level concentrate pass and 4# ore bin.It was seriously affected safety production.The main cause which the pass destroied was analysised by the method of the investigation and statistical data.The logical method about maintenance was recommended and widely using.