2) roadway construction
掘进施工
1.
Through analysising the actual circumstance of the working face in the 3920 mine area in Mengzhuang coal mine meet igneous rock erosion ,it proposed some have the pointed measure on how the working face Crosses this area of igneous rock erosion and which have some advisiable methods to the similar roadway construction.
本文通过对孟庄矿3920工作面掘进施工遇火成岩侵蚀实际情况的分析,提出了掘进工作面过火成岩侵蚀区一些有针对性的措施,为类似条件的巷道施工提供借鉴。
3) vertical well digging construction
竖井掘进施工
5) excavation efficiency
掘进工效
补充资料：立井联合掘进机
见普通凿井法。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条