浅埋火山灰隧道大变形段施工技术

Construction Technology of Large Deformation Section of Shallow Buoyancy Ash Tunnel

火山灰属于膨胀岩的一种,在隧道施工过程中,如果有火山灰地质变形情况出现,则目前相关技术仍无法有效应对,火山灰地质在遇水软化后,就会造成初支发生变形,从而导致塌方等情况的发生,这就大幅增加了该类隧道的施工难度。因此对膨胀的火山灰和富水变形段的隧道施工段的主要施工技术进行了相关的研究与分析,通过对技术的阐述为接下来类似的工程提供有利的参考依据。

Volcanic ash is a kind of expansive rock.In the process of tunnel construction,if there is geological deformation of volcanic ash,the relevant technology can not effectively cope with it.After the softening of volcanic ash geology,the initial branch will be deformed,resulting in landslide.When the situation occurs,this greatly increases the construction difficulty of this type of tunnel. Therefore,the main construction techniques of the tunnel construction section of the expanded volcanic ash and water-rich deformation section have been studied and analyzed.The technical explanations provide a favorable reference for the subsequent similar proiects.