Study On Transform Supervision And Application In Using Technical Of GPS And CR-InSAR To Monitor Goaf Highway

With the rapid development of high-speed transport services, different transport routes must pass through different geological regions, on the highways, when across the region very rich in mineral resources, may face due to the exploitation of mining areas, mined-out area of subsidence caused by Subgrade mining instability and damage the road surface. there are many methods of Highway deformation monitoring, including routine monitoring, monitoring methods and so on, but really to achieve large-scale, highly automated method and very few high-precision monitoring, the GPS, CR-InSAR technology in the mining area of the highway deformation Monitoring is a new topic. This article is under this background, depends on the practical engineering, road subgrade of the highway laws of deformation and failure treatment measures and engineering research.Introduced briefly the highway Subgrade outlined the type of surface deformation and damage, as well as the impact of factors, the focus of analysis of mining-induced land subsidence on the dangers of the highway on the highway deformation method and key technologies. Mainly divided into the following categories: Total Station measurement; GPS antenna of a multi-plane deformation monitoring; digital photogrammetry; InSAR, D-InSAR monitoring techniques; InSAR technology and the integration of GPS technology; fiber-optic strain monitoring techniques; AE Acoustic Emission Monitoring Technology and so on.Main introduced D-InSAR the basic principles of technology and image processing technology. D-InSAR measurement technique by comparing the two SAR images to derive the initial phase changes in the Earth's surface deformation, phase difference of interfering in the topography of the ground phase and the elimination phase, and surface deformation information available. D-InSAR data processing processes and key steps include: the plural image registration, baseline estimation, interference imaging, remove the ground effect, noise filtering, phase unwrapping, a few steps, such as differential interference.Finally, the union project example, the use of D-InSAR, GPS and other monitoring technologies to Dengfeng on the highway for Yuzhou deformation monitoring, the focus on the section K69～K81 selected for analysis. For a variety of road damage on the research and field research, at the same time on the monitoring results were analyzed, according to the highway embankment road goaf stability evaluation criteria system goaf stability of roadbed surface indicators and high-speed goaf highway structures, classification of surface damage to the corresponding treatment measures.The hope through this paper preliminary study, the road to the highway roadbed deformation control engineering research, design and construction to provide a reference for the realization of disaster prevention and mitigation.