Research On Discontinuity Identification Based On TLS Technology

The correct structural plane occurrence measurement and analysis is the important foundation of rock mass stability evaluation data. Most of traditional slope geological survey work of the structural plane occurrence data by geological compass artificial a cquisition. Low working efficiency of this method were lack of security and other tec hnical bottleneck, In a complex environment evil slightly hard to reach areas, it is dif ficult to effective geological survey work.In this paper, we take Chongqing Wulong C ounty ridge dangerous rock body as an example, to study 3D laser scanning technolog y in face recognition of high-risk slope structure, the main work and results are as fol lows:(1) 3D laser scanning technology is introduced in the research status of dangerous rock mass geology survey; and the basic principle, characteristics and application fiel ds of 3D laser technology are explained systematically.(2)This paper Introduces methods and theories used commonly of the object surfa ce reconstruction based on point cloud space. The article describes in detail a kind of based on Delaunay rule of random incremental space unconstrained point cloud surfa ce reconstruction method. With the reconstruction method of the point cloud surface, t he surface of dangerous rock mass is recognized by a region growing method, and ac cording to the fuzzy k-means clustering algorithm to group structure occurrence inform ation below. According to the clustering results are marginal Fisher distribution data, t o make advantage group occurrence information more clear.(3) Through the way of human-computer interaction, three points are picked as a grope to extract the structural plane in the dangerous rock mass point cloud. And acc ording to three consecutive points of space coordinates calculation of the structural pla ne occurrence, this paper make a macro program with excel VBA language.(4) Based on Microsoft visual c + + 6.0 programming environment, this paper re alizes visualization in the OpenGL environment, and programs to achieve automatic id entification and structural surface occurrence statistical algorithms.(5) The paper takes Chongqing Wulong County ridge crest unstable rock as an example, and uses two structures of human-computer interaction and fully automatic fac e recognition methods。Finally, through the two methods of structural plane occurrence information statistics and comparison, the paper Come to a conclusion that the 3D la ser technology is feasibility conclusions in the process of rock mass structural plane a utomatic identification, and provides another effective safety solution in the field.