Underground tunnel support of soft expansion rock is a main difficulty in mine construction currently.

松软臌胀岩层的井下巷道支护是目前矿山建设中的一个主要难点。

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In the tunnel support construction stress analysis, it is conventional to use two dimensional strain principle.

隧道支护结构应力分析习惯于采用平面应变问题来处理。

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Evaluating and analyzing the safety factors of the surrounding rock and the liner, quantitative methods of designing loess tunnel support structure are formatted.

对求得的围岩和衬砌安全系数进行评价分析，形成黄土隧洞支护结构设计的定量方法。

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Include a new airport tunnel to get business support and see to it that the tunnel's route does not require the destruction of a single home.

FORBES: American Pyramids

Besides providing support in dangerous situations like tunnel fires, SINTEF envisions future versions of Anna being used to locate and provide oxygen to earthquake victims or perform maintenance on underwater oil rigs.

ENGADGET: Anna Konda: the firefighting snakebot

They demonstrated to their people that there could be a light at the end of the tunnel of austerity, and that with public support and governmental determination a sustainable growth path could be secured.

FORBES: To Save Itself, Europe Must Adopt Economic Growth Strategies