日前,中铁五局集团一公司承建的常德至吉首高速公路 C10合同段最长隧道—地穆庵隧道中导洞胜利贯通。标志着该合同段这一重难点控制工程施工取得了阶段性胜利。常(德)吉(首)高速公路是国家重点规划建设的西部开发项目长沙至重庆公路的组成部分,是联系我国东、中部与西部地区的重要公路运输通道。中铁五局集团一公司承建其 C10合同段的施工任务,标段长6.6公里,仅隧道工程就有3座,其中,地穆庵隧道是本合同段最长隧道,重难点控制工程。该隧道于2005年10月底进洞施工,由于隧道地质复杂、围岩较差,且变化频繁,导致施工工艺要求高、工序较多、难度 Recently, the lead tunnel of Cimmu-Chang Tunnel, the longest tunnel in C10 from Changde to Jishou Expressway constructed by a company of China Railway Fifth Group, passed the victory. Marking the contract section of this heavy difficulty control construction has achieved a phased victory. The Chang-Deji (first) expressway is an integral part of the Changsha-Chongqing Highway, a western development project planned and constructed by the state, and is an important road transportation channel connecting the eastern, central and western regions of China. China Railway Five Bureau Group, a company to undertake the construction of its C10 contract section of the task, the section of 6.6 km long, only the tunnel there are three, of which the Diam tunnel is the longest tunnel contract section, heavy and difficult to control the project. The tunnel into the tunnel in late October 2005 construction, due to the tunnel geological complex, poor rock, and frequent changes, resulting in high requirements of the construction process, the process more difficult