Early Warning of Collapse Earthquake in Shaanxi Mining Area based on InSAR Technology

Secondary disasters such as collapse occur frequently in Binzhou city and Shenmu County of Shaanxi province due to long-term mineral exploitation. A method based on InSAR technology is proposed to evaluate the occurrence area, time and range of collapse earthquake in Shaanxi loess mining area in advance by combining the short period radar interference sequence data, the subsidence law of loess mining area and comprehensive practical judgment. A model of settlement rule is put forward, and the evolution process and collapse range of collapse are successfully identified by studying the interference time series of the M_L3.2 collapse earthquake in Binzhou, Shaanxi Province on September 5, 2017 and the M_L3.2 collapse earthquake in Fugu, Shaanxi Province on August 16, 2018, which verifies the rationality of the model. This study provides ideas and methods for early identification of collapse earthquake in Loess mining area by InSAR technology.