既有人防工程对隧道建设的影响研究

Research on the Influence of the Existing Civil AirDefense Project on Tunnel Construction

新建隧道工程穿越或邻近既有建筑物时,二者之间会产生相互影响,存在安全隐患,有必要对新建隧道工程和既有工程的应力、位移等变化规律进行研究。采用FLAC3D有限元软件建立三维模型,对既有人防工程附近新建隧道进行研究,研究结果表明:双线隧道工程左右两隧道的施工顺序对隧道变形有一定影响;当隧道离人防工程距离越近,既有人防工程其对隧道的变形影响越大。

When a new tunnel project crosses or is adjacent to an existing building,there will be mutual influence and safety hazards between the two. It is necessary to study the stress, displacement, and other change rules in the new tunnel project and the existing project. The new tunnel near the existing civil air defense project is studied by using FLAC3D finite element software to establish a three-dimensional model. The research results show that: the construction sequence of the left and right tunnels in the double track tunnel project has a certain influence on the tunnel deformation;the closer the tunnel is to the civil air defense project, the greater the influence of the existing civil air defense project on the deformation of the tunnel.