Precursors of instability in a natural slope due to rainfall: a full-scale experiment
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Dosyalar
Tarih
2018-09
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer Heidelberg
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A full-scale landslide-triggering experiment was conducted on a natural sandy slope subjected to an artificial rainfall event, which resulted in mobilisation of 130m(3) of soil mass. Novel slope deformation sensors (SDSs) were applied to monitor the subsurface pre-failure movements and the precursors of the artificially triggered landslide. These fully automated sensors are more flexible than the conventional inclinometers by several orders of magnitude and therefore are able to detect fine movements (<1mm) of the soil mass reliably. Data from high-frequency measurements of the external bending work, indicating the transmitted energy from the surrounding soil to these sensors, pore water pressure at various depths, horizontal soil pressure and advanced surface monitoring techniques, contributed to an integrated analysis of the processes that led to triggering of the landslide. Precursors of movements were detected before the failure using the horizontal earth pressure measurements, as well as surface and subsurface movement records. The measurements showed accelerating increases of the horizontal earth pressure in the compression zone of the unstable area and external bending work applied to the slope deformation sensors. These data are compared to the pore water pressure and volumetric water content changes leading to failure.
Açıklama
Anahtar Kelimeler
Landslide monitoring, Natural hazards, Slope movements, Slope deformation sensors, Slope stability, Unsaturated soils, Geotechnical physical modelling, Rainfall, Deformation, Vegetation, Stability, Landslide triggering mechanisms, Model fill slopes, Artificial rainfall, Unsaturated soils, Climate-change, Fluidized landslide, Shear-strength, Suction, Soils, Soil mechanics, Landslides, Pore pressure, Pressure distribution, Rain, Water, Natural hazard, Physical modelling, Slope deformation, Slope protection, Bending, Compression, Detection method, Earth pressure, Modeling, Movement, Sensor, Slope failure
Kaynak
Landslides
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
15
Sayı
9
Künye
Askarinejad, A., Akça, M. D. & Springman, S. M. (2018). Precursors of instability in a natural slope due to rainfall: A full-scale experiment. Landslides, 15(9), 1745-1759. doi:10.1007/s10346-018-0994-0
