{"id":105878,"date":"2025-04-09T10:51:53","date_gmt":"2025-04-09T14:51:53","guid":{"rendered":"https:\/\/dronelife.com\/?p=105878"},"modified":"2025-04-09T10:51:53","modified_gmt":"2025-04-09T14:51:53","slug":"drones-go-underground-japans-toda-construction-uses-uavs-to-inspect-tunnel-faces","status":"publish","type":"post","link":"https:\/\/dronelife.com\/2025\/04\/09\/drones-go-underground-japans-toda-construction-uses-uavs-to-inspect-tunnel-faces\/","title":{"rendered":"Drones Go Underground: Japan\u2019s Toda Construction Uses UAVs to Inspect Tunnel Faces"},"content":{"rendered":"

AI-powered drone system reduces inspection time from 2 hours to 17 minutes, offering a safer, faster solution for subterranean infrastructure projects<\/h3>\n

by DRONELIFE Staff Writer Ian J. McNabb<\/p>\n

\"\"This article published in collaboration with JUIDA<\/a>, the Japanese UAS Industrial Development Association.<\/em><\/p>\n

Japanese firm Toda Construction Co. has developed an innovative new application for UAVs- not in the sky, but deep under the ground. Toda, in collaboration with Spiral Co. and GreenBee Co., recently announced that they had successfully tested their AI-driven face analysis technology that used drones to analyze recently dug tunnel faces, a process that usually involves a painstaking analysis by teams of engineers. Toda hopes that its autonomous drone system will reduce personnel needs while making previously time-consuming inspections faster and easier, aiding in large project management and shortening timelines.<\/p>\n

\"drone<\/p>\n

The overall system included a dust-proof charging canopy for the drone unit (a necessary addition in the debris-filled mountain tunnels the creators envision the system being deployed in), alongside a custom software solution to make the whole process both autonomous and simple to implement. The drone system features autonomous obstacle avoidance when it goes to take photos of the rock face, ensuring that it doesn\u2019t run into construction vehicles, workers, or debris while it completes its missions.<\/p>\n

Toda\u2019s press release said, \u201cIn our mountain tunnel construction, we verified the effectiveness of a series of systems, including flight stability, image acquisition, and AI-powered evaluation, using an autonomous flight system equipped with an ‘obstacle avoidance function\u2019 and \u2018automatic detection function of cutting edge’. As a result, it was confirmed that the AI can select an appropriate photo for cutting-edge observation by selecting an appropriate photograph from hundreds of cutter photos, allowing AI to take off from the charging port autonomously, avoiding obstacles such as heavy machinery, shooting in the tunnel, and returning to the right position after shooting the cut area, and even allowing them to operate completely automatically until landing at the charging port.\u201d<\/p>\n

The total time to complete a face survey using engineers was around 2 hours. Use of the drone-based system reduced total inspection times down to 17 minutes, an impressive advancement that might make UAVs an important part of large underground infrastructure projects in future.<\/p>\n

More information on the system is available here<\/a> (in Japanese).<\/p>\n

Want DRONELIFE news delivered to your inbox every weekday? \u00a0Sign up\u00a0here<\/a>.<\/em><\/strong><\/p>\n

Read more:<\/p>\n