Sichuan Total Station Company introduces the project background to you

　　The project is located in the section between Jingbo Road Station and Bohai Road Station of the subway line in Harbin,Heilongjiang Province.The section is a shield section,with a total length of 1864.977m for the upstream line;The total length of the downlink is 1859.325m.After leaving Bohai Road Station,the section line is laid under Dalian Road and Dalian North Road in a straight line,and under Dalian North Road,it is connected to Jingbo Road Station in a straight line after transitioning with a 3000m radius horizontal curve and a 1000m radius horizontal curve.This time,it is scanned and the data analysis of tunnel cross-section detection is performed.

　　Technical advantages

　　The Z+F IMAGER 5010C phase type 3D laser scanner used in this measurement is widely recognized and praised in the detection industry due to its hardware advantages of high efficiency,high accuracy,non-contact,and ranging up to 187.3 meters;The perfect combination of high-precision data splicing and traditional high-precision control points can ensure the authority of the detection results.The application of three-dimensional laser scanners in subway tunnel measurement and detection has obvious advantages in improving work efficiency,improving measurement accuracy,and saving measurement costs.It can be used in the detection of subway tunnels after completion.

　　Solution

　　1.Field survey

　　2.Perform preprocessing such as noise removal and splicing on the data to form a complete tunnel data point cloud,and export the data.

　　3.Import the point cloud into the 3D Reshaper software for data post processing to generate five pile sections.

　　4.Generate a section DXF file.