本文通过瓦斯综合防治技术，解决了圆梁山隧道的瓦斯施工安全问题。

By taking comprehensive gas prevention and control measures, the safety of the construction of Yuanliangshan tunnel under gas conditions is guaranteed.

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介绍圆梁山隧道出口端各个施工阶段的施工方案及相应的机械设备配置。

The paper presents the construction methods and corresponding machinery matching schemes adopted in each construction stage of exit portion of Yuanliangshan tunnel.

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圆梁山隧道所处毛坝向斜存在高压富水，给隧道的设计与施工带来了很大的难度。

There is high pressure and abundant water in MaoBa syncline where Yuanliangshan tunnel lies, that brings a great many difficulties for design and construction of the tunnel.

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