Experimental study of flooding area characteristics of flash floods under different bedload transport conditions

DOI

10.2991/iccte-16.2016.95How to use a DOI?

Keywords

Flash floods; bedload transport; flooding area; river channel morphology; solid model

Abstract

Based on the large-scale field conceptual solid model experiments of artificial torrents and water-rock flows, this paper studied the changes of flooding areas and cross-sections morphology of river channel in different bedload transport rates, and the results showed that:1) there is a critical point in bedload transport rate between the bedload transport levels and flooding areas, before the rate reaches the critical point, the more the bedload transport rates, the larger the flooding area; but when the rate reaches the point, the more the bedload transport rates, the smaller the flooding area. 2) The great amount of bedload of flash floods would promote the deposition in river channel and raise the river bed significantly, and this is the reason why flooding area extends with the increase of bedload transport rate in low-level bedload transport of flash floods. However, with the rise of bedload transport rate, the collisions of big particles greatly consumed the flood power, which obviously slows down the flood flow velocity and eventually leads to the reduction of flooding area.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jun Du
AU  - Chendi Zhang
PY  - 2016/01
DA  - 2016/01
TI  - Experimental study of flooding area characteristics of flash floods under different bedload transport conditions
BT  - Proceedings of the 2016 International Conference on Civil, Transportation and Environment
PB  - Atlantis Press
SP  - 576
EP  - 580
SN  - 2352-5401
UR  - https://doi.org/10.2991/iccte-16.2016.95
DO  - 10.2991/iccte-16.2016.95
ID  - Du2016/01
ER  -