Application of InSAR Technology in Early Recognition of Geohazards

In the western Sichuan region of China, there have been many earthquakes of magnitude 7.0 or higher in recent years, which have induced a large number of shattered mountains. The shattering mountain has a high hidden feature, which poses a great threat to the lives and property of the people in the disaster area. InSAR technology has a good application effect for identifying potential glide disasters. Therefore, this paper applies InSAR technology and surface professional monitoring method to identify geological hazards on the left bank of Zagunao River. The results show that there are three deformed bodies in the area by InSAR technology. The Huangniobazi landslide has an overall sliding on August 10, 2017. The Xishancun landslide is still creeping deformation, and the Yufeng rock deformation body (Suspected landslide) is the creep deformation; the results of analysis of the surface displacement monitoring show that the deformation trend of the Xishan Village landslide is consistent with the InSAR results, which verifies the rationality of the InSAR results. The evolution process of the sediments after the instability of the Xishan Village landslide has periodic characteristics, that is, the acceleration slip phase, the deceleration slip phase, and the progressive stabilization phase.