ORIGINAL PAPER
Deformation response regularity of Liujiaba landslide
under fluctuating reservoir water level condition
Junhui Shen
1
•
Yihang Gao
1
•
Liwang Wen
1
•
Xiaohao Jin
2
Received: 11 June 2017 / Accepted: 27 May 2018
Ó Springer Science+Business Media B.V., part of Springer Nature 2018
Abstract Due to the periodic rising and falling of the reservoir water level, the rock–soil
body of bank slope is constantly changing between the saturated and unsaturated status,
which changes the limit equilibrium condition of the slope body, resulting in a large
number of dormant landslide reactivation and new landslide generation after water
impounding operation of the three gorges reservoir. Based on the long-term monitoring
data of pore-water pressure, water content, reservoir water level, rainfall and landslide
deformation, the deformation response regularity of Liujiaba landslide under the fluctu-
ating reservoir level combined scenario is studied in this paper. The results show that the
landslide deformation is mainly in the lower section affected by the fluctuation of the
reservoir water. The slide deformation appears in the mid-early stage of the water level
declining and during the running of 175 m water level. The deformation is gradually
increasing from a slowly to rapidly stage, then slows down and gradually reduces to a
relative stopped state. Considering that the variation of the saturation line in the landslide
will be influenced by the water level fluctuation rate, the SEEP and SLOPE modules are
used with Geo-studio software for the fluctuant reservoir level and response pattern of
landslide deformation analysis. The study can be provided as a reference for landslides
study of debris aggradational landslide.
Keywords Landslide deformation Á Reservoir water level Á Pore-water
pressure Á Response regularity Á Three gorges reservoir area of Yangtze
River
& Yihang Gao
gaoyihang1988@163.com
1
College of Environment and Civil Engineering, Chengdu University of Technology,
Chengdu 610000, People’s Republic of China
2
Center for Hydrogeology and Environmental Geology, China Geological Survey, Baoding 071051,
People’s Republic of China
123
Nat Hazards
https://doi.org/10.1007/s11069-018-3378-9
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