Wankun Li1, *, Bohu Zhang1, Jian Liu2, Xueheng Cai3 and Qinglong Luo4
1 School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China
2 Zhejiang Highway and Water Transportation Engineering Consulting Limited Liability Company, Hangzhou, Zhejiang 310006, China
3 Department of Civil Engineering, Zhejiang University, Hangzhou 310058, China
4 Sichuan Metallurgical Geological Prospecting Bureau 604 Battalion, Chengdu 628017, China
A large amount of geometric data of a remote target can be obtained in a short time by collecting photographs based on photogrammetry. photogrammetry has become an important method to extract the geometric parameters of rock mass discontinuities. The purpose of this paper is to quantitatively analyze the accuracy of the geometric parameters of the three-dimensional model obtained by photogrammetry through a physical model test, and thus to obtain the inspiration of the photogrammetric accuracy of the rock mass discontinuities. The results of the physical model test shows that the measured error of the geometric parameters is very small, and the measured values can satisfy engineering requirement.
photogrammetry, accuracy of geometric parameters, rock mass discontinuities, physical model test
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