小净距隧道偏压浅埋段开挖及支护技术研究

Research on excavation and support technology of small clear distance tunnel with bias shallow buried section

由于小净距隧道偏压浅埋段围岩岩体普遍较为破碎,受力及变形是左右非对称的,所以在开挖及支护过程中容易发生滑坡等地质灾害,因此应加强偏压浅埋小净距隧道开挖支护技术的研究。本文主要从浅埋偏压小净距隧道开挖支护技术研究的意义为出发点,并结合具体实例分析了此类隧道工程的塌方开挖与支护技术,得出了可为此类隧道工程提供有益参考的开挖支护技术。

Because the surrounding rock mass of the biased and shallow buried section of the small clear distance tunnel is generally broken,the force and deformation are left and right asymmetrical,so geological disasters such as landslides are likely to occur during the excavation and support process,so the bias should be strengthened.Research on excavation and support technology of buried small clear tunnel.This paper mainly starts from the significance of the research on the excavation and support technology of shallow buried unsymmetrical pressure and small clear distance tunnels,and analyzes the collapse excavation and support technology of this type of tunnel engineering with specific examples,and concludes that it can be used for this type of tunnel engineering.Provide a useful reference for excavation and support technology.