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《Journal of Earth Sciences and Environment》 2008-03
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Attitude Determination of Joint Running Through Vault Based on Close-range Photogrammetry in Excavating Tunnel

FAN Liu-ming,WANG Zhong-feng,LI Ning(School of Water Resources and Hydroelectric Engineering,Xi'an University of Technology,Xi'an 710048,Shaanxi,China)  
It is a problem to determine the joint attitude using digital image in the close-range photogrammetry technique.The primary reason is that only two-dimensional information but not three-dimensional information is obtained from a single image.When a cranny plane cutting the tunnel vault,cranny traces becoming arc lines will made it more difficult to obtain the cranny information.Based on the close-range photogrammetry theory,a new method to calculate the joint attitude is proposed using the information of the ahead face in excavating tunnel.The arithmetic method called transforming from curved-surface to horizontal plane carry out the calculation of the joint attitude cutting the tunnel vault.Finally,its feasibility is proved by a theory model example.
【Fund】: 陕西省教育厅重点实验室重点科研计划项目(05JS34)
【CateGory Index】: P234.1
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