| Citation: | Liu Jikun, Yang Xiaolin, Wang Chenghu. Principle and application of S-SARⅡ technology for collapse emergency monitoring[J]. Bulletin of Geological Science and Technology, 2023, 42(1): 42-51. doi: 10.19509/j.cnki.dzkq.tb20220495
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The collapse disaster has the characteristics of high concealment, strong paroxysm and serious harmfulness. Its early warning monitoring is an important research work in the preparation phase and construction period of various major foundation projects, and it is also an important scientific basis for the on-site command of collapse disaster monitoring and rescue. In this paper, combined with GB-InSAR and the latest multiple input multiple output(MIMO) technologies, the measurement range of emergency slope rescue radar S-SAR II has expanded by 60 times.The radar deformation map is generated by monitoring the potential collapse points on the southwest side of a open pit in Inner Mongolia, and the occurrence time of collapse is predicted by using DEM and various prediction models. The results show that S-SAR Ⅱ accurately determines the deformation area and corresponding magnitude and predicts that the time of collapse is between 9:32 a.m. and 10:27 a.m. on August 29, and the actual time of collapse is 10:26 on August 29. Therefore, S-SAR Ⅱcan predict the occurrence time of collapse disaster and guarantee the production safety of the mining regions. Through practical application analysis, it is proved that the range of S-SAR Ⅱ system has been significantly improved after optimization to meet the needs of collapse monitoring, and the telemetry and early warning technology represented by S-SAR Ⅱ has obvious technical advantages in geological disaster risk disposal and emergency rescue.
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