基于激光测距技术的隧道断面形变检测系统

地铁隧道经过长时间的运营,受多种内外部应力的影响将会产生断面形变。针对这一问题,设计了车载激光测距装置,对隧道内壁进行连续测量以检测其形变状态。介绍了隧道断面的形变测量方法、轮廓拟合原理和误差分析。该检测系统的设计实现了隧道断面的结构安全性检测和对可能发生的形变灾害的及时预警,为地铁隧道的安全运营提供了有效的保障。

A Tunnel Cross-Section Deformation Detection System Based on Laser Ranging Technology

Subjected to variety of internal and external stress,the subway tunnel will have a cross-section deformation after a long period of operation. A vehicle laser ranging device is designed to measure the inner wall of the subway tunnel and detect the deformation of the tunnel section.The deformation measurement methods,contour fitting principles of the tunnel cross-section,and error analysis are introduced.This system achieves the detection to the structure safety of tunnel section and the early-warning for possible deformation disaster in time to provide effective guarantee for the safety operation of metro tunnel.