隧道超前小导管施工技术分析

Technical Analysis of Tunnel Construction before Tunnel

以西双版纳隧道为研究对象,简要阐述超前小导管在软弱围岩隧道施工中的重要性及其作用机理。结合现场施工情况,指出实际预支护效果不佳的主要原因,并提出相应解决措施及改进要点。极大改进现场施工质量及安全,取得较好的经济、社会效益。

Taking the Xishuangbanna Tunnel as the research object,the importance and mechanism of the small small conduit in the construction of the weak surrounding rock tunnel are briefly described.Combined with the on-site construction situation,the main reasons for the poor effect of actual pre-supporting are pointed out,and corresponding solutions and improvement points are proposed.Greatly improve the quality and safety of on-site construction and achieve better economic and social benefits.