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- W2364685855 abstract "In 5·12Wenchuan earthquake,the Yingxiu-Beichuanfault zone across Hongchun gully of Sichuan,China,made the area produced abundant debris,estimate 384. 3 × 104m3,it provide a rich source for debris flows. On 14th August,2010,Hongchun gully occurred debris flows,it thrust in highway and jam Minjiang River diversions,threat new Yingxiu. In order to research the dynamic evolution of source,we select three times RS image and investigation data,compares the evolution characters of the gully by Arcgis. It indicates that: before 5·12earthquake,the study areacover is good,it did not find geologic hazards,the basin stream all belong to clear ditch. After5·12earthquake,the number of landslide is 68 and the area is 101. 12 × 104m2,the total longth of stream is 5 752 m and stream area is 11. 82 × 104m2. However,because of the hanging wall effect, the geological disaster on the right of the gully is more developing than the left,in the left,most are small and shallow landslide. After ·14debris flows,affected by the surface runoff and debris flows' washing,cuting,it made some landslip revive and made some now landslip,the number of landslip is 77. After8·14,increased 9 landslip,and the area of landslip is 139. 80 × 104m2,increased 38. 68 ×104m2,the gradient is 38. 25%,the total longth of stream is 8 851 m increased 3 099 m,and the area is 17. 48 × 104m2,increased 5. 66 ×104m2. After 8·14debris flow,the debris capacity 344. 6 ×104m3in the study area,and the debris flow training works can contrl 92. 8 × 104m3,so in the heavy rainstorm,it could triggered debris flow disaster again." @default.
- W2364685855 created "2016-06-24" @default.
- W2364685855 creator A5039421403 @default.
- W2364685855 date "2014-01-01" @default.
- W2364685855 modified "2023-09-23" @default.
- W2364685855 title "Dynamic Evolution Characteristics of Hongchun Gully Source Area of Debris Flow in Wenchuan Earthquake Region" @default.
- W2364685855 hasPublicationYear "2014" @default.
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