桃花铺一号隧道TBM施工围岩坍塌和防治

CountryRock Collapse and Prevention of the Taohuapu 1st Tunnelin TBM Construction

西南线桃花铺一号隧道施工采用全断面隧道掘进机 (TBM ) ,施工过程中多次发生围岩坍塌 ,对施工安全和掘进效率产生了较大影响。结合隧道围岩的工程地质特征 ,分析了坍塌发生的原因、类型和危害程度 ,以及施工中所采取的防治措施 ,对进一步加强。

The Full Face Tunnel Boring Machine(TBM) was adopted in the constructionof the Taohuapu 1st tunnel in the southwest railway line ,the country rock of this runnel have happened many times collapse accidents during the construction ,which made heavy influences on construction safety and boring efficiency, this paper analysed the accidents reasons、type and damage degree of collapse and the prevention measures for it in the construction。In addition,it also made a helpful discussion on further strengthening and improving the construction methods of TBM in order to prevent the collapse of the country rock efficiently。