Application of GB-SAR in Blasting Emergency Monitoring
This paper analyzed the technical principle and advantages of GB-SAR,and combined engineering practices to study the site selection,data acquisition scheme and data processing of GB-SAR station,and made a complete emergency monitoring scheme.Taking the construction blasting scene of an engineering construction as an example,the blasting point was located in the central position where the whole reinforced slope needs to be monitored.The emergency monitoring was carried out by using GB-SAR and the deformation information was obtained by using time-series data processing method,which verified the feasibility of the proposed emergency monitoring scheme and the reliability of data processing.The results show that,the blasting has little influence on the well-supported structure,and the shape variable is less than 1.5 mm.After the explosion,the position shape variable near the center increases sharply,and the maximum value can reach 103 mm during the monitoring period.It is further confirmed that the GB-SAR can effectively monitor the impact of blasting on the surrounding construction scene,and can provide strong support for construction operations and project risk investigation.
railwayGB-SARemergency monitoringPS-InSAR data processingblastrisk investigation
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