基于近景摄影测量法计算掘进隧洞中切穿顶拱的裂隙面产状  

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

作　　者：范留明[1] 王中锋[1] 李宁[1] 

机构地区：[1]西安理工大学水利水电学院,陕西西安710048

出　　处：《地球科学与环境学报》2008年第3期283-285,共3页Journal of Earth Sciences and Environment

基　　金：陕西省教育厅重点实验室重点科研计划项目(05JS34)

摘　　要：基于近景摄影测量原理,利用掘进隧洞掌子面上裂隙信息,提出了确定裂隙面产状的方法,并通过将被裂隙所切穿的顶拱曲面沿某一方向拉伸的"曲化平"方法,将弧形线转化成直线,然后应用矢量叉乘确定裂隙面产状,实现了对切穿顶拱的裂隙面产状的计算。最后,通过算例验证了该方法的可行性。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.

关 键 词：近景摄影测量 掘进隧洞 裂隙 产状 曲面迹线 

分 类 号：P234.1[天文地球—摄影测量与遥感] P642[天文地球—测绘科学与技术]