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- Chine ; Contrainte de cisaillement ; Eau du sol ; Effondrement ; Erosion des sols ; Heilongjiang ; Modèle ; Prévision ; Ravinement ; Sol noir
- Black soil ; China ; Collapse structures ; Forecast ; Gully erosion ; Heilongjiang ; Model ; Shear stress ; Soil erosion ; Soil water
- uses, and 2 groups of soils at depths of 30 cm and 60 cm. The cohesion and internal friction angle of each group were determined at 10 levels of water content. The AA. developed a model predicting collapse of gully walls based on 4 parameters : dry bulk
- density, water content, crack depth, and the width of the soil collapse. The model predicts that soil collapse would occur at 2 levels of water content: dry and wet conditions. Field data showed that collapse only occurred under the wet condition
- ; the critical mass water content given by the model is between 31.0% and 33.8% moisture.
- 2011