Research On Underground Tunnel Underground Cavern Detection Based On Ground Penetrating Radar And GIS Technology

With the development of China’s urban development,the exploitation and utilization of urban land above ground is close to saturation,to develop underground space utilization and development is one of the measures to alleviate the tension of urban land use.In the development and utilization of urban underground space,the depth and breadth(or scope)is increasing,while the urban residents are threatened by the sudden geological disasters.Because the lack of information and relevant data,the road construction and use of collapse caused by disasters.Therefore,the use of ground penetrating radar has proven the road below the underground cavity,and using GIS to manage the analysis and presentation is to avoid the disaster caused by road construction related to the effective information management means.This paper not only has theoretical significance,but it also has high practical value.The paper first describes domestic and foreign exploration radar technology development present situation,on ground penetrating radar system structure,working principle and technical parameters of are introduced,and the radar image of the underground cavity physics and abnormal waveform characteristics were analyzed and identified,there is an analysis of the urban underground cavity formation.Introducing the thought of Kunming Urban Road underground cavity monitoring and management platform,including acquisition and analysis processing and comprehensive management subsystem,and has been initially realized the radar image display,layer management,map browsing,attribute information query,spatial analysis etc.function module is introduced in this paper.Next to a road of Kunming city underground cavity detection and GIS data management issues launches the research,by using the vehicle bottom radar data acquisition system of the study area road underground cavity data,design of the urban road basic pipeline data(pipeline),suspected void road information attribute data table,in order to meet the needs of Road underground cavity detection and management,and then use the database and GIS as the platform of data management.Setting Beijing road in Kunming city as an example,suspected target locks,on-site drilling,verify the detection results.Through the typical urban road data collection,using ArcGIS platform powerful attribute analysis function,combined with other underground information parameters,for urban underground space planning and other urban road monitoring to provide reference.