These experiments report of basal normal stress and fluid pressure, as well as vertical velcity profiles of different sediment-water mixtures in a rotating drum. The experiments were conducted in the vertically rotating drum at Richmond field station of UC Berkeley.
Submitted by rkaitna on Sun, 12/11/2016 - 17:40
Conveyor belt flume for creating recirculating steady state flows.
Geometry: length = 2.5 m, channel width = 0.12 m, inclination range between 0° and 30°
Typical sample volume ~ 4-8 litres
Submitted by rkaitna on Sun, 12/11/2016 - 17:24
Vertically rotating drum for steady state experiments
Geometry: diameter = 2.46 m, channel width = 0.45 m, max. flow height = 0.4 m
Typical sample volume ~ 30 - 40 litres
Small scale debris flow experimental setup — Equipment, Method (and Data soon)
Equipment:
The flume is a simplification of the design presented by de Haas et al. (2015), who measured sediment sorting and debris flow runout in a scaled down setting.
There are two components:
Submitted by sedimentexp on Mon, 11/10/2014 - 11:26
Boundary forces generated by debris flows can be powerful enough to erode bedrock and cause considerable damage to infrastructure during runout. Formulation of an erosion-rate law for debris flows is therefore a high priority, and it makes sense to build such a law around laboratory experiments. We scale up granular impact forces by running our experiments under enhanced gravity in a geotechnical centrifuge. Using a 40cm-diameter rotating drum spun at up to 100g, we generate debris flows with an effective depth of over several meters.
