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Due to the influence of the complex landform and geological conditions,it always appear disasters such as landslide,debris flow,ground subsidence,slip,which pose a huge dangerous to the foundation of mountain power transmission tower.This will affect the safe and stable operation of the power grid.Using optical fiber Bragg grating soil pressure sensor,through the monitoring of the foundation soil pressure to realize real-time monitoring of tower geological conditions,so as to realize the accident warning of the foundation of transmission tower.Monitoring shows that the range of 1 # and 2 # soil pressure sensor are respectively 300 KPa and 300 KPa.