公路隧道中心水沟非开挖修复技术研究

Research on Trenchless Repair Technolog of Central Ditch in Highway Tunnel

以甘肃省某高速公路隧道中心水沟结晶堵塞、无法疏通等问题为研究对象,通过中心水沟检查井、路面钻孔、探坑检查等手段,揭示了隧道病害的主要原因,通过综合比选,采用水平定向钻非开挖修复中心水沟的处治方案。应用结果表明,水平定向钻非开挖技术施工便捷、环保、经济、不需要中断交通,能够实现隧道中心水沟的微创重构,具有良好的推广应用价值。

This paper takes the central ditch ofa highway tunnel in Gansu Province as the research object,which is blocked by crystallization and cannot be dredged.Through the inspection well of central ditch,road drlling,pit inspection and other means,the main causes of tunnel diseases are revealed.Through comprehensive comparison and selection,the treatment plan of trenchless repair of central ditch though by means of horizontal directional drilling is adopted.The application results show that the horizontal directional drilling trenchless technology is convenient,environmentally friendly,economical and does not need to interrupt traffic.It can realize the minimally invasive reconstruction of the tunnel central ditch and has good application value.