raise boring [矿业] 天井钻进
raise-boring machine 反井钻机
Raise Boring Method 升井工法 ; 天井钻进法
hard rock raise boring machine [矿业] 硬岩天井钻进机
raise boring machine [矿业] 天井钻机
Blind raise boring machine 盲天井钻机
The authors have made some suggestions for improving raise-boring technology.
为完善钻井工艺，提出了一些建议。
Some Speed lifting Systems of domestic raise-boring machines are described. Based upon an analysis of their functions, some recommendations for their improvement are proposed.
本文介绍了国内天井钻机的几种快速升降系统及其作用并对其进行了分析，提出了改进建议。
The authors describe design of deep raise boring equipment and the experimental study on boring technology, and make an approach to some problems occurring in the deep raise boring test.
叙述了深天井钻进设备的设计和钻进工艺的试验研究，并对深天井钻进试验中遇到的一些问题进行了探讨。
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