Abstract Details

ID / Created Time

64 / 2021-11-15 23:30:17

Title

Monitoring and Early Warning Method for the Major Geohazards Based on Space-air-ground Integrated Observation System

Keywords

geohazards; space-air-ground observation system; real time prediction； Geohazards Monitoring and Early Warning System.

Track/Subject

Status

Draft Pending

Author

成强张 / 成都理工大学

能攀巨 / 成都理工大学

Abstract

In China, large-scale geological disasters often exhibits the characteristics of concealment, sudden and catastrophic. Coupled with strong human engineering activities, such disasters show the characteristics of high-speed, long run-out in an extensive area, resulting in great difficulty in disaster risk prevention and control. Space-air-ground integrated observation system is a solution for these cases, it is possible to carry out the deformation identification of potential landslide disasters in complex mountainous areas, and realize the integrated monitoring, data transmission and early warning analysis of landslide disasters in mountainous areas based on the integration of sliding geological structure theory, multi-source space technology and disaster rapid dynamic simulation technology. On the basis of mastering the dynamic development laws and characteristics of geological disasters, realize the real-time early warning and prediction of geological disasters, so as to build the early warning, spatial prediction and risk assessment system of large-scale landslide disaster.

The "Geohazards Monitoring and Early Warning System", developed by the State Key Laboratory of Geohazards Prevention and Geoenvironment Protection of Chengdu University of Technology, could integrate the geological basic data, spatial data, professional monitoring data, interferometric synthetic aperture radar (InSAR) data, light laser detection and ranging (LiDAR) data, UAV aerial photography data, manual reporting data and other large data of meteorological and hydrological disasters shared by various departments. The system allows for precise tagging of locations that warrant real time site monitoring of displacements using global navigation satellite system (GNSS) and crack gauges, validating expecting behavior of these critical, but previously hidden hazardous locations. On the basis of mastering the deformation law, stage and time-space deformation characteristics of geological disasters, the multi-source heterogeneous monitoring data related to disaster deformation are assimilated to realize the three-dimensional monitoring and analysis of high and steep landslide disaster, so as to provide data support for disaster shape change prediction and early warning. Combined with the formation and evolution mechanism of disasters, realize the real-time monitoring of large-scale landslide disasters.

The over all approach makes it possible to establish a four level comprehensive early warning system, which meets the urgent needs of the country and promotes a practical and operational application of such system in the field of geohazard prevention. And more than 60 rockfalls and landslides in Guizhou Province were successfully warned by the system and the effect is great.

湖北三峡库区地质灾害国家野外科学观测研究站
湖北省巴东人民政府
中国地质大学（武汉）工程学院

The 3rd Badong International Geohazards Symposium (BIGS2021)