With the development of rail transit and underground space in China,traditional tunnel axis measurement methods are not suit-able for ultra large diameter tunnels.This article proposes a method for measuring the axis of ultra large diameter shield tunnels based on laser ranging and total station,and develops new measurement equipment and supporting digital acquisition software.The engineering application re-sults show that the method has a measurement accuracy of less than 20mm for the centerline of ultra large diameter tunnels,providing strong support for monitoring the accuracy of tunnel excavation and correcting the alignment of shield tunneling machines;Efficient flow of measure-ment data from machine to mobile and cloud has been achieved,reducing work time and improving engineering monitoring efficiency.
关键词
超大直径盾构隧道/全站仪/激光测距/轴线中心激光定位/隧道轴线测量
Key words
large diameter shield tunnel/total station/laser ranging/axis center laser positioning/tunnel axis measurement
维普
万方数据