The Research of Kang Gully Mudflow's Formation Mechanism in Weinan

DOI

10.2991/aece-16.2017.99How to use a DOI?

Keywords

loess mudflow; planar erosion; gravity erosion; blocking and burst effect; formation mechanism; geohazard chain

Abstract

There are many gullies in loess area, if enough incompact soil accumulates in the gully, it will cause mudflow when encountering heavy rains. Kang gully located in transition of loess tableland and terrace of Weihe River in Weinan, has a larger longitudinal grade, intense erosion of ground water, and abundant source in gully, many mudflows have occurred. Through field investigation and analysis we think: The landform of Kang gully provides spatial condition to formation of mudflow; Planar erosion and gravity erosion for the slope on either side of gully have accumulation effect for material source of mudflow, blocking and burst phenomenon amplify the scale of mudflow, nevertheless, larger mudflow erodes to the slope toe; landslides on either side of gully and mudflow in Kang gully successively occurred under the influence of rainstorm excitation, and they promote each other, thereby forming more destructive landslide-mudflow-barrier lake-landslide, which is primarily a mudflow geohazard chain.

Copyright

© 2017, 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  - Weilong GUO
AU  - Yuxiang CHENG
AU  - Dawei ZHANG
AU  - Lan LI
PY  - 2016/12
DA  - 2016/12
TI  - The Research of Kang Gully Mudflow's Formation Mechanism in Weinan
BT  - Proceedings of the 2016 International Conference on Architectural Engineering and Civil Engineering
PB  - Atlantis Press
SP  - 452
EP  - 455
SN  - 2352-5401
UR  - https://doi.org/10.2991/aece-16.2017.99
DO  - 10.2991/aece-16.2017.99
ID  - GUO2016/12
ER  -