Abstract:In order to comprehensively develop the geological disaster prevention and control technology system of “civil air defense+technical defense”， and build a geological disaster monitoring and early warning system based on universal monitoring instruments， this paper takes the Dayuanzi landslide in Baoshan City， Yunnan-Guizhou Plateau as an example， introduces the various links of the geological disaster landslide from scheme design to monitoring data screening and mode model design in detail， and the application of three parameters model in the monitoring and early warning system namely rainfall， displacement deformation and crack are expouneded. Through collecting key information of the geological disaster body， such as rainfall， displacement deformation and crack change， the monitoring and early warning model is optimizd， the threshold is adjusted， and the change information of the geological disaster body is captured in time. Moreover， the key link of building a universal monitoring and early warning system is completed relying on the self triggered early warning of the platform criterion model， thereby， the effect of universal monitoring and early warning is achieved and greatly improved the automation and intelligence of the geological disaster prevention system.

Abstract:According to the shift of reflected central wavelength of fiber grating caused by the changing of strain or temperature, an automatic multi-parameter fiber monitoring system was developed for geological disaster monitoring, and the amount of wavelength shift directly reflect changing amount of the strain and the temperature. The monitoring on strain, stress, pressure, temperature, displacement and vibration was realized by the changing of fiber grating encapsulation style and dotty quasi-distributing measure was realized through the design of arrangement for multiple central wavelengths of fiber grating to improve the technology of geological disasters monitoring.