邢东煤矿副井井筒永久锁口施工

邢东煤矿副井井筒利用F A型永久井架进行了凿井 .井筒施工结束后 ,为施工永久锁口 ,采用了快速、安全的控制爆破法拆除了临时锁口 ,并制订了可靠的安全技术措施 ,以使永久井壁不受损伤 ,确保了周围一切建筑物及设施的安全 .通过精心组织、合理施工 ,仅用 2 6 7d就完成了永久锁口的施工 ,取得了良好的经济效果 .

The permanent locking wellhead performances of the auxiliary shafts of Xingdong coal mine

The F*.A type permanent headframe have been used for drilling the wells of the auxiliary shaft of Xingdong coal mine. When the shaft performances have been completed, in order to perform the permanent locking wellhead, a speedy and safety control blasting method have been adopted to remove the temporary locking wellheads, and some reliable safety technical measurement are made out so as to avoid the damage of the permanent well walls. Thus, the safety of the building structure and installations are ensured. The performance is only taken 2 67 days by the well managed construction. A beneficial result is obtained.