高速公路隧道施工中的超前支护技术

Advanced Support Technology in Expressway Tunnel Construction

隧道是高速公路建设领域的重点内容,隧址区的地质、水文条件普遍复杂,各岩层强度的差异性显著,围岩失稳概率较大,需合理应用超前支护技术,切实提高围岩的稳定性,以免因承载力不足而诱发塌方等事故。论文以工程实例为背景,探讨工程的超前支护技术和施工中的技术要点。实践表明,通过超前支护技术的应用,可有效规避隧道变形、地表下沉等问题,隧道的各项工作可顺利开展,超前支护技术具有可行性。

Tunnel is the key content in the field of expressway construction.The geological and hydrological conditions of the tunnel site are generally complex,the strength of each rock strata is significant,and the probability of surrounding rock instability is large.It is necessary to reasonably apply advanced support technology to effectively improve the stability of surrounding rock,so as to avoid the collapse and other accidents caused by the lack of bearing capacity.Taking the project example as the background,this paper discusses the advanced support technology and the key points in the construction.The practice shows that through the application of advanced support technology,the problems such as tunnel deformation and surface subsidence can be effectively avoided,and all the works of the tunnel can be carried out smoothly,which shows that the advanced support technology is feasible.