Refine
Year of publication
- 2007 (312) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (57)
- Fachbereich Wirtschaftswissenschaften (48)
- Fachbereich Bauingenieurwesen (41)
- Fachbereich Elektrotechnik und Informationstechnik (39)
- IfB - Institut für Bioengineering (33)
- Fachbereich Luft- und Raumfahrttechnik (31)
- Fachbereich Energietechnik (24)
- Fachbereich Maschinenbau und Mechatronik (24)
- Fachbereich Chemie und Biotechnologie (20)
- INB - Institut für Nano- und Biotechnologien (19)
Document Type
- Article (176)
- Conference Proceeding (67)
- Book (28)
- Part of a Book (17)
- Patent (6)
- Diploma Thesis (4)
- Report (4)
- Part of a Periodical (3)
- Contribution to a Periodical (2)
- Doctoral Thesis (2)
Keywords
- Aachen / Fachhochschule Aachen (4)
- Aachen University of Applied Sciences (4)
- Kanalisation (4)
- Fachhochschule Aachen (3)
- Führung (3)
- Leadership (3)
- Corporate Design (2)
- Finite-Elemente-Methode (2)
- Kanalisierung (2)
- Kanalnetz (2)
Enterprise SOA einführen
(2007)
Using results from an 8 m2 instrumented force plate we describe field measurements of normal and shear stresses, and fluid pore pressure for a debris flow. The flow depth increased from 0.1 to 1 m within the first 12 s of flow front arrival, remained relatively constant until 100 s, and then gradually decreased to 0.5 m by 600 s. Normal and shear stresses and pore fluid pressure varied in-phase with the flow depth. Calculated bulk densities are ρb = 2000–2250 kg m−3 for the bulk flow and ρf = 1600–1750 kg m−3 for the fluid phase. The ratio of effective normal stress to shear stress yields a Coulomb basal friction angle of ϕ = 26° at the flow front. We did not find a strong correlation between the degree of agitation in the flow, estimated using the signal from a geophone on the force plate, and an assumed dynamic pore fluid pressure. Our data support the idea that excess pore-fluid pressures are long lived in debris flows and therefore contribute to their unusual mobility.