Morphological Characteristics of Till Formations in Relation with Mechanical Parameters

作者: Thomas Lebourg , Joëlle Riss , Richard Fabre , Bernard Clément

DOI: 10.1023/B:MATG.0000007782.78685.A3

关键词: Soil scienceSlope stabilityCohesion (geology)Data acquisitionLandslideMathematical morphologyStiffnessMineralogyPermeability (earth sciences)HydrogeologyGeology

摘要: The study of landslides stability on mountain slopes can become very difficult when materials in movement are heterogeneous: it is a current problem with the old glacial till formations presently under (Aspe Valley, Pyrenees, France). Analysis slope using numerical models necessitates accurate data about mechanical and physical properties. Because tills heterogeneous, large sample necessary but, unfortunately, acquisition costs lot time money. Therefore, we would like to estimate from correlated parameters that easier acquire (morphological image analysis). Observations field previous results laboratory have shown differences between behavior seem be related not only their 3D structure but also morphological petrographical characteristics components. aim this paper first illustrate how classify textural at scales; these classifications based distributions size, shape constitutive elements (blocks, matrix, etc.). Significant statistical available by applying analysis methods mathematical morphology. Next show (friction angle, cohesion). Six specific were collected, establish relation effective internal angle friction elongation factor.

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