采用控制爆破方法安全处理立井工作面大块岩石

A Controlled Blasting Method of Measuring Large Pieces of Rocks at Auxiliary Shafts

在冷泉矿副井井筒基岩段施工中，采用控制爆破方法处理井底工作面大块岩石，取得了较好的效果，保证了井筒内悬挂设施的安全，减少了经济损失，加快了立井施工速度。

In the basement rock construction of auxiliary shafts at Lengquan coal mine, an effective result has been gained by the controlled blasting measurement which has been dealt with the large pieces of rocks at the bottom basement of the shafts Thus, the safety of the hanging equipment in the shafts has been strengthened and the lost has been decreased A speedy construction process is obtained