输水隧洞TBM开挖段围岩预留变形量确定方法

Determination of preset deformation for TBM excavation section surrounding rocks in water conveyance tunnel

目前长距离输水隧洞预留变形量的取值一般根据工程经验及类比方法进行设置,该方法缺乏理论依据,极易造成资源浪费。根据长距离深埋隧洞的开挖支护过程及变形规律,以新疆某输水隧洞工程为依托,采用经验公式法及数值模拟法综合确定预留变形量,对同类型的工程有一定的参考价值。

The value of long distance water conveyance tunnel preset deformation is based on the engineering experience and analogy method. This method is lack of theoretical basis and easy to cause the waste of resources. According to the excavation supporting process and deformation regularity of long distance deep buried tunnel, based on a water conveyance tunnel project in Xinjiang, the experience formula method and numerical simulation method is adopted to define the preset deformation, it have a reference for the similar project.