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3D Laser Scanning, Measurement and Processing Integrated Technology Solution and Application Practice in Tunnelling
(1. China Railway Chengdu Science and Technology Research Institute Co., Ltd., Chengdu 610071; 2. The Fourth Engineering Co., Ltd. of China Railway 12th Bureau Group, Xi′an 710024; 3. Chengdu Zongheng Tongda Information Engineering Co., Ltd., Chengdu 610000)
Abstract The 3D laser scanning technology has been widely applied in tunnelling, but some problems are also in? creasingly prominent, such as the disconnection between the indoor and field work, excessive manual operation, and poor real-time feedback. Based on engineering practice, this paper proposes an integrated technical solution for 3D laser scanning, measurement and processing in tunnelling. Through collection of information in tunnel design model,calculation of the coordinate mileage, automatic filtering of point clouds, downsampling of point clouds and separation of ground objects, etc. it can extract feature values from point clouds and obtain a point cloud data model considering the scale, accuracy and efficiency. And results related to the quality and safety of tunnel projects can be obtained by comparing point clouds with the design data, and point clouds with point clouds. The integrated technical solution is applied in a railway tunnel project, showing that it could shorten the total time of indoor and field work to within 20 minutes with high automation, good accuracy, and good potentials for further promotion.
Abstract：
The 3D laser scanning technology has been widely applied in tunnelling, but some problems are also in? creasingly prominent, such as the disconnection between the indoor and field work, excessive manual operation, and poor real-time feedback. Based on engineering practice, this paper proposes an integrated technical solution for 3D laser scanning, measurement and processing in tunnelling. Through collection of information in tunnel design model,calculation of the coordinate mileage, automatic filtering of point clouds, downsampling of point clouds and separation of ground objects, etc. it can extract feature values from point clouds and obtain a point cloud data model considering the scale, accuracy and efficiency. And results related to the quality and safety of tunnel projects can be obtained by comparing point clouds with the design data, and point clouds with point clouds. The integrated technical solution is applied in a railway tunnel project, showing that it could shorten the total time of indoor and field work to within 20 minutes with high automation, good accuracy, and good potentials for further promotion.
MIN Shiping1 PENG Dong2 HE Yuechuan1 ZHANG Tao3
.3D Laser Scanning, Measurement and Processing Integrated Technology Solution and Application Practice in Tunnelling[J] MODERN TUNNELLING TECHNOLOGY, 2022,V59(1): 87-94
2022, Vol. 59 