小导管超前支护技术在隧道浅埋暗挖法施工中的应用分析

Application and Analysis of Small Duct Advance Support Technology in Shallow Tunnel Excavation Construction

基于维西至兰坪通甸公路项目,对超前小导管技术的相关定义以及隧道浅埋暗挖法施工与小导管超前支护的联系性展开分析,同时对隧道浅埋开挖时小导管超前支护技术的具体应用进行研究。通过研究可知,隧道开挖施工中小导管超前支护技术的关键在于优化施工参数,并明确钻孔、注浆以及小导管安装的要点。

Based on the highway project from Weixi to Tongdian in Lanping, this paper analyzes the definition of advanced ductule technology, and the relationship between shallow tunnel excavation and advanced support of ductule. At the same time, it studies the specific application of advanced support technology of ductule in shallow tunnel excavation. Through research, it can be known that the key of advance support technology of small conduit in tunnel excavation is to optimize construction parameters, and define the key points of drilling, grouting and installation of small conduit.