摘要
软弱围岩隧道施工受地质条件、地势地形、地下水影响较大,设计图中对隧道洞身初期支护尽管采取了较强的支护措施,但实际施工中仍有可能出现洞身沉降、收敛变形过大,初期支护表面出现开裂、剥落、掉块、侵限等情况。结合隧道工程施工现场实例,就软弱隧道变形处理技术进行探讨、总结,以便于为以后类似隧道施工中提供一些借鉴。
Soft surrounding rock tunnel construction is always influenced greatly by geological condition, terrrain topography and groundwater. Although the stronger initial supporting measures have been taken into consideration in the design, tunnel settlement, larger convergence deformation, surface cracking of the initial support ,flaking, fall-block, beyond limit can still be found in actual construction. In this paper, the processing technology on deformation of soft rock tunnel are discussed and summarized combined with the construction site example in order to provide some reference for similar construction.
出处
《铁道建筑技术》
2012年第8期81-83,共3页
Railway Construction Technology
关键词
隧道变形
围岩加固
支顶初期支护
tunnel deformation
reinforcement of surrounding rock
the initial support
