|Table of Contents|

Attitude Determination of Joint Running Through Vault Based on Close-range Photogrammetry in Excavating Tunnel(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2008年第03期
Page:
283-285
Research Field:
水资源与地质工程
Publishing date:

Info

Title:
Attitude Determination of Joint Running Through Vault Based on Close-range Photogrammetry in Excavating Tunnel
Author(s):
FAN Liu-ming; WANG Zhong-feng; LI Ning
School o f Water Resources and Hydroelectric Engineering, Xian University o f Technology, Xian 710048, Shaanxi, China)
Keywords:
close-range photogrammetry;  excavating tunnel;  joints;  attitude;  curve plane trace
PACS:
P234.1;P642
DOI:
-
Abstract:
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.

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Last Update: 2008-09-20