1) layer tunneling and side tunneling
分层分边掘进
1.
By using the layer tunneling and side tunneling, this paper changes the ultra-high and ultra-wide roadways into common ones to tunnel for the purpose of increasing the work efficiency and safety coefficient of tunneling.
利用分层分边掘进,将超高超宽巷道变为普通巷道掘进,以提高巷道掘进的工作效率和安全系数。
2) layered driving
分层掘进
3) long-distance and layered excavation
长距离分层掘进
4) slice drilling and support
分层掘进支护
5) multi-stage driving
分级掘进
6) layer digging
分层挖掘
补充资料：渤海铝业有限公司铝箔分卷机分卷铝箔
渤海铝业有限公司铝箔分卷机分卷铝箔
渤海铝业有限公司铝箔分卷机分卷铝箔
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