矿井生产期间副井延伸工程方案

The plan of the auxiliary shaft strenching engineering during operation

利用矿井原有巷道、设备 ,在安全生产的前提下 ,完成副井的岩柱拆除、延伸重大工程 ,为今后重大工程设计、施工提供了宝贵的经验。

Fully utilizing the existing tunnels, equipment in mine, on the basis of safe production fulfil demolishing the rock pillar of the auxiliary shaft and stretching engineering and provide valuable experiences for the future important project degsin and construction.