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[1]FU Min,ZHAN Tao,XU Chong,et al.Characteristics and Developmental Laws of Geological Hazards along G318 Lhasa-Shigatse[J].Journal of Seismological Research,2019,42(03):438-446.

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Characteristics and Developmental Laws of Geological Hazards along G318 Lhasa-Shigatse

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 42 Number of periods: 2019 03 Page number: 438-446 Column: Public date: 2019-07-24

Title:: Characteristics and Developmental Laws of Geological Hazards along G318 Lhasa-Shigatse

Author(s):: FU Min¹; 2; ZHAN Tao¹; 2; XU Chong³; XIE Chao⁴; (1. 107 Geological Team,Chongqing Bureau of Geology and Minerals Exploration,Chongqing 401120,China)(2. Chongqing Jiangbei Institute of Geo-Engineering Investigation,Chongqing 401120,China)(3. Key Laboratory of Active Tectonics and Volcano,Institute of Geology,China Earthquake Administration,Beijing 100029,China)(4. The Second Monitoring and Application Center,China Earthquake Administration,Xi'an 710054,Shaanxi,China)

Keywords:: G318; Lhasa-Shigatse; south-central Tibet; geological hazards

CLC:: P315.942

DOI:: -

Abstract:: Combine high-resolution remote sensing image visual interpretation technology with field investigation,we carried out detailed interpretation and investigation of collapse,landslide and debris flow within 10 km on both sides along G318 Lhasa-Shigatse and analyzed their characteristics and developmental regularities. Then we calculated the spatial distribution regularities of collapse and landslide according to the elevation,slope,aspect and stratum distribution of the study area. The result showed that there are 329 places of disasters categories,among which there are 79 collapses,117 landslides,and 133 debris flows. There are 45 collapses with area in the range of 0.1～0.01 km²,and the height of collapses is mainly within 300 m,while the collapses in the height of 300～700 m tends to decrease with height; 74 landslides with area in the range of 0.1～0.01 km² developed,including a giant landslide with an area larger than 10 km²,and there are 54 landslides in the height within 100～300 m.There are 70 and 39 debris flows with area in the range of 1～10 km² and 10～100 km²,respectively. Collapses mostly occur in the strata with the elevation of 4.0～4.5 km,the slope of 20°～30°,south slope direction and Cretaceous(K). Landslides mostly occur in the strata with the elevation of 4.0～4.5 km,the slope of 20°～30°,NE slope direction and Triassic(T).

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Last Update: 2019-07-24