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Landslides in a loess platform, North-West China

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Abstract

Frequent occurrence of landslides in the Chinese Loess Plateau has seriously threatened the urban and rural development. Heifangtai loess platform was selected as a case study for the current research. The platform surface is being largely irrigated since 1968. About 70 landslides of different types have occurred in the region including loess slides, loess flows, combined loess, and bedrock landslides along/across bedding planes. The loess slides occurred in the unsaturated soil and have a shallow failure depth. The loess flows initiated at the contact between loess and underlying clay and can travel a distance of more than 300 m at a speed of up to 5 m/s. Controlled by the topography of the underlying clay layer, the loess flows mainly occurred along the eastern margins of Heifangtai. The combined loess and bedrock landslides along bedding planes typically travel a distance of 30–60 m at a speed of 0.002–0.005 m/s with a volume of up to several million cubic meters. This type of landslide commonly occurred along the southern margins of Heifangtai, where the slope aspects are close to the inclination direction of the bedding planes of underlying bedrocks. Monitoring of perched water table in loess layer at the northern margin of Heifangtai shows the water table is rising at a speed of about 18 cm/year.

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Acknowledgments

The research has been funded by the National Nature Science Foundation of China (no. 51109199). The authors would like to thank Prof. Yin YP of China Geological Survey and the other anonymous reviewer for their very useful comments and suggestions.

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Authors and Affiliations

  1. Institute of Geology and Geophysics, Chinese Academy of Sciences, No. 19, Beitucheng Xilu, Chaoyang District, Beijing, 100029, China

    Ling Xu, Fuchu Dai, Xinbin Tu & Javed Iqbal

  2. Department of Civil Engineering, The University of Hong Kong, Hong Kong, China

    Leslie George Tham

  3. Key Laboratory of Geotechnical Mechanics and Engineering of Minister of Water Resources, Yangtze River Scientific Research Institute, Wuhan, 430010, China

    Yufeng Zhou

  4. Department of Earth Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan

    Javed Iqbal

  5. The Key Laboratory of Geo-hazards in Loess Area of China, Ministry of Land Resources, Xi’an, Shaanxi Province, 710000, China

    Ling Xu

  6. The Key Laboratory of Western Mineral Resources and Geological Engineering of Ministry of Education, Xi’an, Shaanxi Province, 710000, China

    Ling Xu

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  1. Ling Xu
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  2. Fuchu Dai
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  3. Xinbin Tu
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  4. Leslie George Tham
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  5. Yufeng Zhou
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Correspondence to Ling Xu.

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Xu, L., Dai, F., Tu, X. et al. Landslides in a loess platform, North-West China. Landslides 11, 993–1005 (2014). https://doi.org/10.1007/s10346-013-0445-x

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