高原隧道穿越浅埋河谷段施工技术探讨

Highland Tunnel Cross through Thin Covered River Valley Construction Technique

介绍了关角隧道进口段穿越浅埋河谷段开挖方案与支护参数,施工实践表明,该施工方案合理可行,效果良好,可为后续类似地段施工提供借鉴。

This paper in details presented the geological conditions and construction scheme about the inlet section of Guanjiao tunnel crossing through thin covered river valley. Practice made clear that this technique was reasonable and feasible, and of good results.