高速公路隧道新奥法施工监控量测

摘要

It is important that monitor measuring is applied in tunnel in regard to new Austrian tunneling method. The monitor measuring of NATM was studied in the new Tianpingling Tunnel in Guangqing Highway. Based on the regularity and conditions of the surrounding rock deformation of monitor measuring in site, the optimum time for primary and permanent support are obtained, which averts suecessfully accidents in construction, enhances the construction qualities and guidance to tunnel construction in harmful geological structure areas.%隧道采用新奥法原理施工时,利用围岩周边收敛和拱顶下沉量的观测值可对隧道周边围岩的应力动态过程及发展趋势、围岩稳定性以及支护的合理性进行监控,这对安全施工及保证工程质量具有重要作用.通过对新天坪岭隧道的实时监控与反馈信息分析,研究了隧道围岩的稳定状况,优化二次衬砌支护时间,确保了隧道在不良地质构造中施工安全和质量,是隧道信息化施工的重要手段.