shaft sinking [矿业] 凿井 ; 打竖井 ; 竖井掘进 ; 井筒掘进
construction survey for shaft sinking 凿井施工测量 ; 立井施工测量
shaft sinking cycle 凿井工篆环
rotary drill for shaft sinking 凿竖井用回式钻机
freezing shaft sinking method 冻结凿井法 ; 温度分布
shaft sinking and drifting 井巷工程
Shaft sinking winch 凿井绞车
shaft sinking round 凿井炮孔组
deep shaft sinking [矿业] 深井掘进
It provides the experiential and technical assistance for shaft sinking by freezing method in thick overburden of Juye coalfield and other mining areas.
本文总结了龙固副井的冻结施工工艺，为巨野煤田以及深厚表土的冻结施工提供了经验和技术保证。
The security of freezing wall is the key problem of freezing shaft sinking in deep alluvium.
冻结壁的安全性是深厚冲积层中冻结凿井的关键问题。
This text introduced the practice method of the box permanent steel petroleum derrick shaft sinking in the construction of vertical shaft pit shaft.
在立井井筒建设中，我们在原设计的基础上，对箱形永久钢井架凿井的实际方法作了改进。
应用推荐