Research on Tunnel Support Deformation Based on Camera and Digital Speckle Improvement Technology

Abstract

This paper mainly studies the measurement method of tunnel support deformation. On the stability of the rock to make a preliminary judgment. The use of simulated light source laser data acquisition, the use of digital image processing circle fitting spot positioning method. Reduce the use of lengthy algorithm to a certain extent, reduce the processing time of the data, and measure the position of the spot coordinates and radius. Show the changing rules of light spot. Improved digital speckle method to solve the pixel and length unit conversion problem. In the analysis of the accuracy of a certain elaboration.