Abstract：Research purposes : Using error analysis theory and engineering experimental research methods, This paper firstly，introduces the ranging tunnel deformation monitoring process of three - dimensional laser scanning technology used in the tunnel environment, and then discusses the errors and their characteristics caused by ranger, scanner goniometer, environmental impact, and data processing. Next, studies the sensitivity of the experimental factors to tunnel deformation analysis. Finally summarizes the sources of error and influence of the three - dimensional laser scanning technology used in the tunnel environment deformation monitoring.
Research conclusions :(1) The study showed that there are lots of enxo souces in tunnel deformation monitoring used 3D laser scanner and the ee'ors caused by ranger, scanner goniometer, environmental impact, and data processing can be be weakened or controlled with appropriate measures. (2 ) Though changes in the diameter of the tunnel, the tunnel profile disturbance frequency and tilt do not affect the deformation monitoring error , but system noise and random noise affect deformation monitoring error greatly. ( 3 ) As long as the shielding rate is less than 60% , the deformation monitoring analysis and error analysis methods are effective for large number of obscured data sets. (4) The research results can be used in tunnel safety monitoring.
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2013, Vol. 30 
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