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本文介绍六盘山隧道概况、塌方原因、处治方法。利用大管棚中管棚嵌套技术和周边小导管作为穿越堆积体段的超前支护,通过注浆将松散的堆积体固结起来,利用大管棚支撑保护和中管棚小导管固结围岩,在轮廓线外形成一个环向刚性、柔性并用的支撑体,有效地阻止了松散体出现坍塌并成功通过塌方体。
This article describes the overview of Liupanshan tunnel, landslide causes, treatment methods. The use of large pipe shed in the pipe shed nesting technology and the surrounding small duct as the advance support through the pile body, through the grouting loose loose body consolidation, the use of large pipe shed support and protection of the small duct catheterization consolidation Surrounding rock, outside the contour line to form a ring rigid, flexible and support body, effectively prevent the collapse of loose body and successfully through the collapse body.