In the past 30 years, research on rainfall-induced landslides has grown remarkably. The contribution of matric suction to soil strength and physics water flow in unsaturated soils are widely accepted phenomena among researchers. However, adoption mechanics geotechnical engineering practice been relatively slow, part due practicality design solutions available engineer. This paper conducts a par...

The effect of matric suction on S-wave velocity (V s ) unsaturated soils has been observed to show different trends from the Vs relationship with effective confining pressure. In some soils, increase in per unit stress change (u a -u w is greater than pressure (σ’3) for saturated and dry vice versa other soils. this study, difference was examined through state variables similar soil samples. Ex...

Understanding the stability of trees under lateral loads arising from natural hazards (e.g. extreme weather and debris flows) is important, as fallen can become a potential threat to life infrastructure. Two 1 : 20 scale three-dimensional printed analogue root system models, with architectures field-surveyed architecture data, were used simulate push-over behaviour in silty sand different condi...

A soil’s physical properties, mineral types, and pore structure significantly influence the shape properties of soil-water characteristic curve (SWCC). This study investigated effects types on SWCC pore-size distribution (PSD). Eight different soils from an alluvial deposit in Istanbul Adapazar?/Türkiye were used study. The test samples prepared by compaction at optimum water content (OWC) wet ...

A FORTRAN code for liquid water flow in unsaturated soil under the isothermal condition was developed to simulate water infiltration into Yolo light clay. The governing equation, that is, Richards' equation, was approximated by the finite-difference method. A normalized sensitivity coefficient was used in the sensitivity analysis of Richards' equation. Normalized sensitivity coefficient was cal...

According to the Mualem capillary model, hydraulic conductivity (HC) is integrated theoretically from the function related to soil water retention curves (SWRC). On the other hand, based on the smooth type of SWRC, the predicted HC function decreases abruptly near saturation, which often challenges the stability of numerical solutions. To improve the Mualem HC, van Genuchten’s function for SWRC...

This paper presents the development of a rainfalltriggered landslide module within an existing physically based spatially distributed ecohydrologic model. The model, tRIBS-VEGGIE (Triangulated Irregular Networks-based Real-time Integrated Basin Simulator and Vegetation Generator for Interactive Evolution), is capable of a sophisticated description of many hydrological processes; in particular, ...

This paper presents the laboratory test results of vertical infiltration on two soil columns of finer over coarser soils subject to simulated rainfalls under conditions of no-ponding at the surface and constant head at the bottom. The main objectives were to evaluate the effect of rainfall intensity and duration; and to provide experimental evidence for soil water redistribution and hysteresis....

This study aims to quantitatively assess the impact of extreme precipitation events under current and future climate scenarios on landslides. Rainfall-triggered landslides are analyzed primarily using extreme precipitation estimates, derived using the so-called stationary assumption (i.e., statistics of extreme events will not vary significantly over a long period of time). However, extreme pre...