APPLICATION OF GPS SATELLITE POSITIONING TECHNIQUE TO MONITORING OF LANDSLIDES IN THREE GORGES DAM

The experimental research into the application of GIS satellite positioning technique to the monitoring of technology to the monitoring of landslides in Three Gorges dam, is an important project financed by the Ministry of Land and Resources to modernize the geological hazard monitoring, forecasting and prevention. This experimental research is to analyze, study and prove the feasibility of the application of GPS satellite positioning technique to the monitoring of landslides, to formulate technical regulations, and to build a demonstration region of the application of GPS to the monitoring of geological hazards in the section from Lianziya to Badong. The experimental research into the GPS-based monitoring of the landslides in Three Gorges dam deals with the selections of the optimum GPS monitoring hour, the optimum GPS monitoring duration, the optimum cutoff elevation angle for the GPS monitoring, and with the adoption of appropriate software and ephemeris. The research results show that GPS satellite positioning technique which can satisfy the precision required for the monitoring of the landslides is feasible.