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[1]ZHANG Fanghao,DU Haoguo,ZHANG Yuanshuo,et al.Investigation of Typical Earthquake-damage Caused by the 2021 Yangbi,Yunnan MS6.4 Earthquake Based on the Oblique Photography[J].Journal of Seismological Research,2021,44(03):481-489.

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Investigation of Typical Earthquake-damage Caused by the 2021 Yangbi,Yunnan M_S6.4 Earthquake Based on the Oblique Photography

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 44 Number of periods: 2021 03 Page number: 481-489 Column: Public date: 2021-10-20

Title:: Investigation of Typical Earthquake-damage Caused by the 2021 Yangbi,Yunnan M_S6.4 Earthquake Based on the Oblique Photography

Author(s):: ZHANG Fanghao; DU Haoguo; ZHANG Yuanshuo; ZHANG Jianguo; LU Yongkun; CAO Yanbo; (Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)

Keywords:: earthquake-damage investigation; oblique photography; high yesolution; the Yangbi 6.4 earthquake

CLC:: P315.94

DOI:: -

Abstract:: The high-resolution 3D model created on the basis of the oblique photography is able to present stereovision effect of buildings,which facilitates analyzing the damages of structures,walls,doors,windows,etc.The 3D model improves the traditional remote sensing images that can only obtain information of the roof of buildings.In the disastrous area in Yangbi County stricken by the 6.4-magnitude earthquake on May 21,2021,we used multi-rotor drones to take photos of the residential houses in Beiyinpo villagers’ group in Huajiaoyuan Village,West Cangshan Town which located on the seismic Intensity 7 area.Further,we set up high-resolution 3D models,and on the basis of our models,we analyzed the cause of the most severely damaged residential houses of a family in the Beiyinpo villagers’ group.Thus,we identified several unfavorable factors that caused the aggravation of the damage to the houses:the magnifying effect of mountains,the amplification effect of the slope,the superimposition of multiple earthquake damage,and the defects of the buildings’ walls.

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Last Update: 2021-10-20