近几年来，随着国家越来越重视环保措施，隧道施工技术逐渐在公路、铁路建设中的运用越来越频繁。由于大跨度的隧道施工的难度大，相比较而言，连拱隧道具有施工相对安全、在相同地质条件下的分离式隧道可以占地面积更小而且更加实惠等优点。而由于施工方法的缺陷，使得连拱隧道主要由短隧道为主。本文结合连拱隧道的施工经验，阐述连拱隧道的发展以及具有的特点，归纳小结连拱隧道施工中的困难要点，对连拱隧道施工技术的方法进行讨论。%In recent years, with the state paying more and more attention to environmental protection measures, the tunnel construction technology is more and more frequently used in highway and railway construction. The large span tunnel construction is very difficult. In comparison, the multi-arch tunnel construction is relatively safe, and the separated tunnel can cover a small area in the same geological conditions and it is more affordable. The multi-arch tunnel is mainly composed of short tunnel due to the defects of construction method. According to the construction experience of the multi-arch tunnel, this paper expounds the development and the characteristics of the multi-arch tunnel, summarizes the difficult points of multi-arch tunnel construction, and discusses the method of multi-arch tunnel construction technology.
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