近三十年来,我国铁路隧道施工由于受机械设备和支护方法的限制,绝大多数是采用分部开挖法修建的。只在1965年以后,由于大型凿岩台车和装运设备的引进,开始在稳定围岩的条件下采用了全断面的施工方法。 近年来,由于喷锚支护和光面爆破技术的发展,以及施工装备和施工工艺的不断改进,隧道的施工方法相应有所发展。逐步解决了在 In the recent three decades, the construction of railway tunnels in our country has been mostly constructed by the method of partial excavation due to the limitation of the mechanical equipment and support methods. Only after 1965, with the introduction of large rock drilling rigs and shipping equipment, began to use a full cross-section construction method with stable surrounding rock. In recent years, due to the development of shotcrete and bolt support and smooth blasting technology, as well as the continuous improvement of construction equipment and construction technology, the tunnel construction methods have been developed accordingly. Gradually solved in the