Pore‐Based Modeling of Hydraulic Conductivity Function of Unsaturated Rooted Soils

International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 10, 2025

ABSTRACT Mualem's approach has been widely used to predict hydraulic conductivity functions (HCFs) of bare soils if a soil water retention curve (SWRC) model is available. The assumption that holds the distribution pores spatially completely random. Under this assumption, relative ( K r ) determined by continuance probability water‐filled pores. However, not valid for rooted soils, as root growth causes particle rearrangement, and thus pore altering connectivity. After reconsidering study attempts develop new predicting HCF modeling root‐induced rearrangement resultant change in Two approaches mentioned were incorporated with root‐dependent SWRC express function matric suction. proposed was validated against nine sets measured HCFs from published studies. It found reduced mean square error (RMSE) lg 33% 53%, respectively, compared traditional model. Physically, model's effectiveness depended on texture type. In fine‐textured roots capable displacing particles, thereby causing rearrangement. Also, coarse high strength tend alter distribution. considering effects pore‐level root‐soil interaction provided significant improvement prediction unsaturated soils.

Language: Английский

Repeated failure mechanism of weathered solution-collapse breccia slopes induced by excavation and rainfall: the Songkan slope case study

Bulletin of Engineering Geology and the Environment, Journal Year: 2025, Volume and Issue: 84(6)

Published: May 5, 2025

Language: Английский