000018297 001__ 18297
000018297 005__ 20170118182216.0
000018297 04107 $$aeng
000018297 046__ $$k2017-01-09
000018297 100__ $$aRahman, Md Aftabur
000018297 24500 $$aRational Way To Estimate Velocities of Earthquake-Induced Debris Flow From Super-Elevations

000018297 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018297 260__ $$b
000018297 506__ $$arestricted
000018297 520__ $$2eng$$aEstimation of debris flow velocity based on Forced vortex equation by using the super-elevation is a conceivable approach in earthquake-induced geo-hazard studies. A super-elevation can be seen through a curved trail of debris flow, where the centrifugal force is responsible for the higher flow depth on the outer bend. Post-flow field investigation is the solitary way to measure the super-elevation at certain cross-sections. However, only the remnant flow-marks are visible, which can mislead the actual velocity of the flow. Highlighting this problem, a series of numerical simulations using the Smoothed Particle Hydrodynamics (SPH) are carried out to check the aptness of applying flow-marks in the debris flow velocity estimation. Velocities from flow-marks underestimate actual velocities near the source region, while they converge on real velocities as the distance to source increases. Afterward, numerical results are justified with the one well documented real debris event called “Shiraito river debris flow”, which happened near the rim of Hakone Crater, Kanagawa prefecture, Japan, ensuing from the 1923 Great Kanto earthquake.

000018297 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018297 653__ $$aSuper-elevation; debris flow velocity; mud-marks; SPH

000018297 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018297 720__ $$aRahman, Md Aftabur$$iKonagai, Kazuo
000018297 8560_ $$ffischerc@itam.cas.cz
000018297 8564_ $$s980242$$uhttps://invenio.itam.cas.cz/record/18297/files/1186.pdf$$yOriginal version of the author's contribution as presented on USB, paper 1186.
000018297 962__ $$r16048
000018297 980__ $$aPAPER