摘要
该文以实例介绍了连拱隧道中导洞法的施工技术在吉怀(吉首到怀化)高速公路第4标段龙子康连拱隧道的施工中,以过去的三导洞施工工艺为基础,在Ⅳ级以上的围岩地段,取消两边的侧导洞,直接采用中导洞法施工,简化了施工工序,减少投入,加快施工进度。
The article introduces the application of the multi-arch tunnel construction technology by central drift method in the construction of Longzikang Multi-arch Tunnel of Jishou^Huaihua Expressway Contract Section 4.Based on the past three-pilot drift method,the side pilots at two sides are canceled in the surrounding rock section above Class IV and the central drift method is directly used in the construction,which simplifies the construction procedure,decreases the investment and seeps up the construction schedule.
出处
《城市道桥与防洪》
2012年第9期235-237,341,共3页
Urban Roads Bridges & Flood Control
关键词
连拱隧道
中导洞
施工技术
multi-arch tunnel,central drift method,construction technology
