黄土隧道施工工艺及质量控制要点

由中交集团承建的太(原)中(卫)银(川)铁路ZQ-Ⅱ标共有隧道78座,其中由中交一公局承建的施工范围内共有黄土隧道13座。该隧道群位于黄土高原丘陵区。黄土隧道有其自身的特点:易变形、易塌方,遇水产生湿陷性,预注浆困难,锚杆施作不成功等。该文根据所从事的黄土隧道的施工实践,简述了黄土隧道的施工工艺和质量控制要点。

Loess Tunnel Construction Technology and Quality Control Gist

There are 78 tunnels in ZQ-Ⅱ Bid of Taizhongyin Railway constructed by China Communications Construction Group,in which there are 13 loess tunnels constructed by China Communications Construction Group First Highway Engineering Bureau. These tunnels are located at the hill area of loess plateau. The loess tunnel has its own characteristics:easy to deform,easy to collapse,collapsible with water,difficult for pre-grouting and unsuccessful for anchor construction and so on. This article briefly describes the construction technology and quality control gist of the loess tunnel according to the construction practice of loess tunnel.