隧道施工测量条件差，要高效率完成任务就需要一种快捷而且便于检查的测量方法。采用普通全站仪，可以测得隧道掌子面上任意点的三维坐标，然后通过手持CASIO计算器测量程序计算，即可精确算得此点相对该里程设计断面的超欠挖值。不但硬件投资成本低，而且断面的放样、检查、复查极为方便，能及时提供准确、充足的测量数据，从而更加高效、准确的指导施工。此方法方便、快捷，同时可以作为一种对其他隧道测量施工复核、检查的方法。

 In order to efficiently complete the tunnel construction and measurement in unfavorable conditions, a quick and easy measurement checking method is needed. According to the threedimensional coordinates of any point on the working face measured by total station, CASIO measurement program can exactly work out the overbreak and underbreak volume of any point on the working face. This measurement method has low cost, but high convenience in the setting out, measuring and rechecking of tunnel crosssections. The exact and abundant measurement data guide the tunnel construction efficiently. This measurement method can also be used as a rechecking method for other tunnel measurement and construction technologies.