With mining tunnel as the studied object, the stability of surrounding rock and its supporting design are studied in the paper.

本文以矿山回采巷道为主要研究对象，对巷道围岩的稳定性及其支护设计进行了研究。

youdao

Model pipe Jacker is widely used in mining tunnel and paving pipe, in order to work efficiently, the remote monitor system was designed.

顶管掘进机广泛应用于隧道挖掘和管道铺设。为使其高效工作，设计了远程计算机控制系统。

youdao

This paper makes analysis and exploration of the common ventilating modes used in the dust-control in the comprehensive mechanized coal mining tunnel and some existing problems.

对综掘巷道粉尘防治中常见的通风方式以及存在的问题进行了分析和探讨。

youdao

Many of these mining engineers have already worked on projects like the Channel Tunnel and the Jubilee line extension so they're not easily impressed.

BBC: Crossrail: Passion deep below west London

Mining firm Freeport said at least four miners were rescued at its Grasberg mine after an underground tunnel collapsed early on Tuesday.

BBC: Freeport's Grasberg copper mine