24 August 2009 Deformation monitoring system of tunnel rocks with innovative broken-ray videometrics
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Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73752C (2009) https://doi.org/10.1117/12.839212
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China
Abstract
An innovative broken-ray videometrics method is proposed to resolve the problem of long time monitoring of rocks' deformation in underground tunnel structures. For the deformation measurement of underground projects, the traditional measurement techniques using level gauge or theodolite can only measure one dimensional displacement. Although videometrics methods have been applied in many fields, there are often not intervisible optical paths between the positions to be measured in the underground projects. The broken-ray videometrics method we proposed can measure the orientation and position between the reference and non-intervisible target due to the intricate structure of tunnels. Broken-ray path is constructed by relay-stations between the control points on the ground and underground point to be measured. Finally, laboratory experiments were designed which showed satisfactory accuracy.
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Qifeng Yu, Qifeng Yu, Guangwen Jiang, Guangwen Jiang, Zhichao Chao, Zhichao Chao, Sihua Fu, Sihua Fu, Yang Shang, Yang Shang, Xia Yang, Xia Yang, } "Deformation monitoring system of tunnel rocks with innovative broken-ray videometrics", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73752C (24 August 2009); doi: 10.1117/12.839212; https://doi.org/10.1117/12.839212
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