At the base of a deep shaft six metres below the modern streets a wooden structure was revealed.

在现代街道下方六米深的竖井底部，有一座木质结构的建筑露出来了。

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The research result is not only used to the stability analyzes of shaft in mine, but also used as the reference of the optimization design of shaft construction in rock part of deep shaft.

所得结果不仅可用于煤矿立井井壁稳定性分析，对深立井井壁结构的优化设计同时具有重要的参考价值。

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The prevention of freezing pipe breaks in deep shaft freezing has become a key technique in mine construction in China.

防止冻结管断裂在国内深井冻结中已成为关键技术。

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The shaft is a mile deep and the primary access to the Lucky Friday Mine.

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Eventually, the shaft will be sunk 20 meters deep to support the Crossrail tunneling works.

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