地铁隧道变形监测基准网点确定的一种方法

A method for datum points choice of deformation monitoring networks in subway tunnel

在地铁隧道变形监测基准网里,基准点一般布设在隧道两端较为稳定的区域,如何判断并确定稳定的基准点,是计算变形监测点和进行变形分析的基础。本文提出了一种确定稳定基准点的"组合后验方差检验法",其基本思想是利用x2检验法找出显著的"动点"并将其排除在"基准点"之外;通过实例分析和模拟计算检验了该方法的有效性。该方法计算简单,方便易行,可供类似变形监测工程数据处理借鉴。

In the deformation monitoring datum network for subway tunne datum points are generally laid out at relatively stable area of tunnel ends. It is the basic to judging and determining stable datum points for calculating deformation monitor and deformation analysis. In this paper, the authors point out a method called ＂combination variance of unit weight test＂ to determine stable datum points. This method was thinking clearly, calculating simplely and used easy, which could be available for similar deformation monitoring project. This method was verified effectiveness by combining with a subway tunnel monitoring project.