Acta Geodaetica et Cartographica Sinica ›› 2022, Vol. 51 ›› Issue (10): 2056-2068.doi: 10.11947/j.AGCS.2022.20220306

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The bedding rock landslide identification in the head area of the Three Gorges Reservoir combined with disaster pregnant mechanism and comprehensive remote sensing method

HUANG Haifeng1,2,3,4, XUE Ronghua1,2,3,4, ZHAO Beibei1,2,3,4, YI Wu1,4, DENG Yonghuang5, DONG Zhihong5, LIU Qing5, YI Qinglin1,4, ZHANG Guodong1   

  1. 1. National Field Observation and Research Station of Landslides in Three Gorges Reservoir Area of Yangtze River, China Three Gorges University, Yichang 443002, China;
    2. Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China;
    3. Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering, China Three Gorges University, Yichang 443002, China;
    4. College of Civil Engineering & Architecture, China Three Gorges University, Yichang 443002, China;
    5. Yichang Geological Environment Monitoring Station Yichang, Yichang 443002, China
  • Received:2022-05-05 Revised:2022-07-26 Published:2022-11-05
  • Supported by:
    The National Natural Science Foundation of China (Nos. U21A2031;42007237;42107489);The Opening Fund of Hubei Key Laboratory of Intelligent Vision Based Monitoring for Hydroelectric Engineering,China Three Gorges University (No. 2020SDSJ02);The Opening Fund of Key Laboratory of Geological Hazards on Three Gorges Reservoir Area,Ministry of Education,China Three Gorges University(No. 2020KDZ09)

Abstract: The identification of hidden dangers is an important technical work to realize the transformation of potential geological hazards from post-disaster relief to pre-disaster prevention.This paper proposes a method for identifying the bedding rock landslide based on disaster pregnant mechanism and comprehensive remote sensing detection technology. Firstly, data analysis, remote sensing survey and field survey is used for identifying disaster-pregnant environment and establishing a disaster-pregnant index system; at the same time, typical hazard mode and the identification mark of integrated remote sensing are established. Then, key target areas and suspected hidden dangers of geological disasters are delineated. And geological hazard identification is realized relied on ground detailed assessments and professional identification. By using this set of technical methods, a total of 8 potential catastrophic geohazards have been identified in the work area, of which 5 are potential rockslides with hazard-pregnancy modes but not yet apparently deformed. The results show that this method can make up for the disadvantages of low accuracy or even failure mainly relying on remote sensing change detection. It is especially suitable for hidden and sudden geological hazard identification in areas with steep hills and dense vegetation.

Key words: head area of the TGR, consequent bedding rockslide, potential hazard detection, disaster pregnant mechanism, comprehensive remote sensing

CLC Number: