摘要
为选择适宜于隧道洞口段的施工预加固措施,对28座受偏压影响的隧道洞口段地形地质条件以及采用的预加固措施等资料进行了收集和整理,将影响偏压洞口段施工安全的因素分为两类,并在大量现有研究成果的基础上,提出了先治理第Ⅱ类影响因素,再加固仰坡,最后再治理浅埋偏压的预加固顺序。这种加固方式的优点在于能够有效地利用已有研究成果。以某隧道右洞洞口段预加固措施为例,验证了这种加固方式的正确性。所得结论可为具有类似地质地形情况的隧道设计和施工提供技术参考。
To select reasonable pre - reinforced measures for portal section of tunnel, the data of 28 un - symmetrically loaded tunnel portals are collected and sorted out. The factors that can influence construction safety of unsymmetrically loaded tunnel are classified into two types and a pre - reinforced order is put forward based on a great deal of research on the existing study, namely first controlling the factors of type II, then reinforcing the slope, and finally controlling the factors of shallow buried and unsym- metrical loadings. The new approach correctness was verified by its application in pre - reinforcement of right portal section of a tunnel. All the obtained conclusions can be guidance for the design and construction of similar tunnels.
出处
《人民长江》
北大核心
2013年第22期51-55,共5页
Yangtze River
关键词
浅埋偏压
洞口段
预加固
隧道工程
shallow and unsymmetrical loadings
portal section
pre -reinforcement
tunnel project
