Jinwu Bridge is located in Jinhua,Zhejiang Province,which is an important transportation hub spanning three districts with large blasting workload and complex surrounding environment.In order to guarantee the safety of explosives during the 3-day and 2-night blasting operation and to complete the large-scale blasting security warning and evacuation work efficiently and reliably in the early morning with low visibility,for the first time,we combined the respective advantages of real-view monitoring by AR(Augmented Reality),drone and infrared thermal imager.Spherical cameras were set at a commanding height and the crossing of roads to cover the whole blasting security warning range.Gun cameras were fixed to monitor the charging operations.The drone maneuvered around and the infrared thermal imager searched hidden parts.All the signals together with the social probe video signals were transmitted to the AR back end.After intelligent signal processing,all important information could be displayed visually in the global monitoring screen to build a comprehensive three-dimensional real-time visual blasting security warning monitoring and search system with AR live-view monitoring as the main method.In the monitoring system,UAV mobile monitoring and infrared thermal imager search were used as the supplement measures to scan the overall situation and control the details.Blasting security warning could be conducted by this novel system together with conventional methods.The system was online for 60 hours with 373,140 m2 covered and 18 illegal intrusions reported.The task of blasting security warning was successfully completed within one hour by the assistance of the monitoring system.The construction of the system and its successful application in urban demolition solved the problem of safe storage of explosives around the clock and the problem of evacuation work of personnel in complex environment with low visibility.