Artículos de revistas
Infiltration depth of mineral particles in gravel-bed rivers
Fecha
2021Registro en:
Minerals 2021, 11, 1285
10.3390/min11111285
Autor
Bustamante Penagos, Natalia
Niño Campos, Yarko Iván
Institución
Resumen
This article discusses the results of an experimental study of a spill of mineral particles
in gravel-bed rivers due to mining accidents. The purpose of this research is to characterize the
dynamics of the fine mining particles spilled on a bed of immobilized gravel as a hyper-concentrated
mixture and to experimentally characterize the infiltration phenomenon. We analyzed the type of
infiltration considering the dimensionless coarse to fine particle size relationship, the dimensionless
weight of the fine particles, the relative density of the particles, and the relationship between the
subsurface and surface velocities, in addition to the densimetric Froude and Reynolds numbers of
the fine particles. We found that the dimensionless infiltration depth is not associated with hydraulic
parameters or the weight of the fine sediment spilled; however, fine sediment deposition decreases
with depth, and infiltration depth may increase if subsurface flow decreases over time. Finally, a
relationship of the dimensionless maximum infiltration depth with the relative density of the mining
particles, the ratio of the bed sediment and the mining particles sizes, and the ratio between the
subsurface and surface velocities is established.