高风险偏压浅埋隧道施工技术研究

Study on the High Risk of Bias Shallow Tunnels Construction Technology

偏压浅埋V级围岩级岩石隧道施工具有风险大、地质情况复杂、施工难度大等特点。本文结合铜九铁路蛤蟆岭偏压隧道施工,总结出开挖施工技术、软弱围岩施工技术措施、初期支护及衬砌施工技术措施、防渗漏技术措施、高风险偏压、隧道施工技术保证措施、浅埋隧道施工注意事项等施工要点,为同类工程提供借鉴。

Shallow V bias level grade rock tunnel surrounding rock has many features, such as the risks, complex geological situation, large construction difficulty. In this paper, combined with the bias railway tunnel in copper nine frog Ridge, the excavation and construction technology, the weak wall construction technology measures are summed up, initial support and lining construction technology measures to prevent leakage of technical measures, high-risk bias, measures of tunneling technology to ensure construction points, shallow tunnel construction precautions are put forward to provide references for similar projects.