Failure and flow development of a collapse induced complex landslide: the 2005 Kuzulu (Koyulhisar, Turkey) landslide hazard

Yilmaz, Işık; Ekemen, Tülay; Yıldırım, Mustafa; Keskin, İnan; Özdemir, Gül Nihal

doi:10.1007/s00254-005-0113-0

Cited by 14 publications

(1 citation statement)

References 5 publications

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“…The occurrence of landslides is related to specific Initial failure occurred due to a vertical displacement triggering a translation slide, and debris materials originated from weathered rocks saturated by water flowing over the country rocks. Both surface water and groundwater circulation play an important role Nat Hazards (2011) 59:347-365 363 in initiating the movements of landslide (Yilmaz et al 2006). In this regard, the character of fine particles is crucial for determining landslide types and the possibility of their occurrence because fine particles such as clays have great specific surface area and expandability that can absorb water within their structural layering, which can change the shearing force and cohesive force of the soils or regoliths developed on the country rocks.…”

Section: Characterization Of Fine Particles In Landslidesmentioning

confidence: 99%

Characteristics of landslides induced by a debris flow at different geology with emphasis on clay mineralogy in South Korea

et al. 2011

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Landslides induced by debris flow have been discussed in relation to the geotechnical properties of soil developed on bedrock, together with an emphasis on the importance of mineralogy comprising precursor soils. Three areas composed of different types of geology were compared to relate landslide with soil compositions: Precambrian gneiss (Jangheung area), Jurassic granite (Sangju area), and Tertiary sedimentary rocks composed of shale and mudstone (Pohang area) in Korea. X-ray diffraction for mineral identification and quantitative analysis, Scanning Electron Microscope for observation of microtexture, and laser size analysis for very fine particles ranging from micrometer were performed, with conventional measurements of particle size, porosity, density, permeability, and consistency for the soils. Soils at landslide sites containing a large amount of finer particles have higher uniformity and gradation coefficients, but lower consistency than those at non-landslide sites. Landslide areas are characterized by higher porosity and lower density. Soil from the gneiss area shows a high plasticity index while that of mudstone has high water content. Main clay minerals contained in soils of the sites where landslides took place are illite, chlorite, kaolinite, and montmorillonite. Mineralogical information on the constituents and microtexture of soils aids in better understanding the causes and patterns of landslide, together with mechanical properties of soils.

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Section: Characterization Of Fine Particles In Landslidesmentioning

confidence: 99%