[1]CAO Binting,JIAO Juying,WANG Zhijie,et al.Characteristics of Landslide Under the Extreme Rainstorm in 2013 in the Yanhe Basin[J].Research of Soil and Water Conservation,2015,22(06):103-109.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 06
Page number:
103-109
Column:
Public date:
2015-12-28
- Title:
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Characteristics of Landslide Under the Extreme Rainstorm in 2013 in the Yanhe Basin
- Author(s):
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CAO Binting1, JIAO Juying1,2, WANG Zhijie3, WEI Yanhong2, LI Yujin1
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1. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China;
3. College of History and Tourism, Shaanxi University of Technology, Hanzhong, Shaanxi 723001, China
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- Keywords:
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characteristics of landslide; rainstorm; landslide frequency; scale of landslide; Yanhe Basin
- CLC:
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X43
- DOI:
-
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- Abstract:
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The extreme rainstorm occurred in Yanhe Basin in 2013, and triggered various landslides. According to Investigation Code of Landslide, Rockfall and Debris Flow(DD2008—02), we investigated landslides in six small watersheds in Yanhe Basin from north to south. The results showed that:(1) heavy rain and rainstorm mainly concentrated in July, Baota District was the central area of rainstorm in Yanhe Basin because its erosive rainfall was the greatest; (2) the erosion modulus of landslide of two watersheds which were farther from the central area of rainstorm in south were the largest, and reached to 7 000 t/km2, it reached to 3 700 t/km2 in central watersheds, and reached to 1 400 t/km2 in northern watersheds, landslide amounts and landslide frequency also showed this law: south > center > north; the landslides which were shallow landslides occurred in loess and distributed slopes of 20°~60°; all of landslides belonged to small scale landslide, the proportion of volume of landslides which were less than 1 000 m3 was the greatest and reached 78%, the number of landslides whose scale exceeded 5 000 m3 was few.