超前预加固大断面隧道施工参数系列化研究

Construction Parameters Serialization for Advance Consolidation of Large Profile Tunnels

论文以武广客运专线浏阳河隧道为工程背景,根据铁路隧道围岩分级和断面尺寸为主要影响因素,提出新的掌子面稳定性分级方法及分级数;对影响大断面隧道掌子面稳定性的影响因素进行序列化及参数敏感性研究,得到超前预加固大断面隧道围岩稳定性影响因素序列及掌子面超前加固参数敏感性;然后在掌子面稳定性分级及超前预加固大断面隧道影响因素序列基础上,提出超前预加固大断面隧道施工参数系列,为浅埋大断面隧道施工提供指导。

With Liuyanghe tunnel on Wuchang-Guangzhou railway as the background,the paper proposes a new method for the face stability classification and category based on the main affecting factors including railway surrounding rock category and tunnel profile.Serialization and parameter sensitivity study on factors affecting the stability of working face of large profile tunnels were carried out,in consequence,the factor series affecting the advance consolidation of surrounding rocks of large profile tunnels and the advance consolidation parameter sensitivities of tunnel working face were acquired.Based on the classification of working face stability and the factors affecting the advance consolidation of large profile tunnels,construction parameter series for the advance consolidation of shallow large profile tunnels were put forward.