大断面黄土隧道坍塌处治施工工艺研究

贺维庚,饶 

(陕西高速公路工程咨询有限公司,陕西 西安 710061

  黄土隧道发生坍塌后由于土体自稳性被破坏,土体结构松散,后续掘进及超前支护施工非常困难,本文基于西宝高速公路改扩建项目唐家塬隧道坍塌事件的处治过程,对黄土隧道或松散土体的 “盖帽”掘进工法及大管棚 “锤击”施做工法进行了研究和总结,提出了大断面黄土隧道坍塌发生后的施工工艺要点。

关键词黄土隧道坍塌处治掘进工法管棚施做

中图分类号U455          文献标识码A

Study on Large Section Loess Tunnel Collapse Treatment Technique

HE Wei-gengRAO Pan

Shaanxi Expressway Engineering Consulting Co.Ltd..Xi'an 710061China

AbstractIt’s difficult for collapsed loess tunnel to subsequent excavation and pre-support construction because of the soil stability damage and loess soil structure. This paper summarizes key construction points in large section loess tunnel collapseand studies the COVERtunneling method and HAMMER" pipe-shed support construction based on the treatment process of Tangjiayuan tunnel collapse in Xibao highway construction.

Key wordsloess tunnelcollapse treatmenttunneling methodpipe-shed support construction