小漩隧道拱部塌方处理施工技术

以某高速公路在炭质板岩的地质条件下，隧道开挖时发生拱部塌方事故的处理为例，介绍了滑坡产生的原因、处理方案的确定及处理后的效果等，本着确保安全、质量且经济使用的原则，采用短进尺、强支护、二衬紧跟等措施，安全、顺利地通过了塌方段，为类似的隧道施工提供了借鉴。

Construction technology of small swirling tunnel arch collapse treatment

Under the geological conditions of a highway in carbonaceous slate, taking the arch collapse accidents treatment when tunnel excavation for example, this paper introduced the causes of landslide, the determination of treatment schemes, and the effect after freatment and so on, in the principle of ensuring the safety, quality and economic use, using short footage, strong support, secondary lining keep up with and other measures, safety, successfully passed the landslide section, provided reference for similar tunnel construction.