Application of Real Scene 3D Technology in Flood Control Investigation of Mountain Railway
In view of the problems including incomplete basic data of flood control hazards of mountainous railway and difficulty of flood control site hidden hazards investigation,a technical scheme of railway flood control hidden hazards investigation based on high-precision oblique photogrammetry real 3D modeling technology was proposed,and a high-precision oblique photogrammetry real 3D modeling process and model optimization method were established.The practical application scenarios of 3D technology in railway flood control were summarized systematically.The application practice of real 3D flood control hidden danger investigation carried out in a railway in southern China shows that the real 3D technology can provide full elements and three-dimensional geographic information for flood control hidden danger investigation,meet the global overview of macro information and local detailed characteristics of flood control works to obtain information,and solve the difficult problems,such as manual inspection of blind areas in mountainous areas.The research results show that,the adoption of the technology can greatly improve the efficiency of hidden danger detection,and the accuracy of hidden danger identification can reach more than 95%,which significantly improves the comprehensiveness and accuracy of flood control hidden danger detection.
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