A Debris Flow Hazard Monitoring and Early Warning System Based on Formation and Motion Processes of Debris Flow

YANG Chenglin1 DING Haitao2 CHEN Ningsheng2

(1.Key Lab of Mountain Hazards and Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuang Province 610041)
(2.Key Lab of Mountain Hazards and Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of SciencesKey Lab of Mountain Hazards and Surface Processes, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, Sichuang Province 610041)
【Novelty】Based on formation mechanism of debris flow, the monitoring and early warning system depending on motion process monitors the characteristic parameters at all phases, establishes the corresponding disaster classification by analyzing all threshold values, and thus builds the comprehensive monitoring and early warning system which covers the whole area. This proposed monitoring and early warning system can provide a reference on monitoring and early warning of the debris flow in small river basins, especially for areas (e.g., Wenchuan earthquake area) where high-frequency and massive debris flow occurs.

【Abstract】According to the massive total volume, group-occurring debris flows in the Wenchuan earthquake stricken area, the monitoring and early warning system will be an economic and effective measure. Based on analysis of past performance of debris flow early warning and existing problems, this paper proposed a new debris flow hazard monitoring and early warning system based on the formation and motion mechanism of debris flow. The new system consists of rainfall monitoring, fluid level monitoring, pore-water pressure monitoring, soil moisture monitoring, ground vibration monitoring, and video monitoring. And the early warning levels were established after the comprehensive analysis of the threshold values of all these monitorings. It would be suitable to use this comprehensive monitoring and early warning system for protecting debris flow threatened areas in the Wenchuan earthquake stricken area.

【Keywords】 Earthquake; Debris Flows; Formation Process; Motion Process; Monitoring and Early Warning System;


【Funds】 “Twelfth-Five” National Key Technology Research and Development Program (Grant No. 2011BAK12B02) Young Scientists Fund of the National Natural Science Foundation of China (Grant No.41201555) Young Scientists Fundof of Mountain Hazards and Environment, CAS “1-3-5” Project of Institute of Mountain Hazards and Environment, CAS

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This Article


CN: 23-1324/X

Vol 23, No. 03, Pages 1-9

June 2014


Article Outline




  • 1 Research status of monitoring and early warning system for debris flows
  • 2 Motion mechanism of debris flow
  • 3 Constitution of the monitoring and early warning system
  • 4 Applications of monitoring and early warning system
  • 5 Conclusion
  • References