Abstract:We use sandbox experiment for structural physical modeling, and combine with seismic survey results and cross-fault observation data, to analyze whether the buried fault activity monitored by Ninghe cross-fault site is effective. The results reveal that when the observation accuracy is higher than the error, cross-fault site monitoring can effectively monitor the activity of buried faults. The distribution and development of the simulated fault profile are consistent with the shallow seismic profile, and surface deformation can be caused by buried fault activity. Due to the different fault tendency of each secondary fault, cross-fault monitoring data may give rise to the illusion of reverse fault. The model diagram of horizontal point position distribution of Ninghe cross-fault monitoring site is presented.
DING Ning,XIE Yu,CHEN Changyun et al. Analysis of Monitoring Effect of Buried Fault Cross-Fault Site Based on Structural Physical Modeling Experiment: A Case Study of Ninghe Site[J]. jgg, 2021, 41(8): 810-815.