Proceedings of the 2017 International Conference on Advanced Materials Science and Civil Engineering (AMSCE 2017)

Research on the Debris Flow Hazards after the Wenchuan Earthquake in Bayi Gully, Longchi, Dujiangyan, Sichuan Province, China

Authors
Yu Ma, Caixia Li
Corresponding Author
Yu Ma
Available Online April 2017.
DOI
https://doi.org/10.2991/amsce-17.2017.36How to use a DOI?
Keywords
wenchuan earthquake; debris flow; formation; characteristics; prediction
Abstract
Many debris flow hazards were triggered in Earthquake area after the Wenchuan Earthquake. In these debris flow hazards, the most notable one is the debris flow in Bayi Gully on Aug.13, 2010. Bayi Gully was a debris flow gully before the Wenchuan Earthquake, in the first three raining seasons after the Wenchuan Earthquake, there are 4 times debris flows were triggered, and the largest and most harmful debris flow was triggered on August 13, 2010. The total rainfall during the debris flow of August 13 was 229 mm, and the duration of debris flow was 1 hour and 40 min. The density of debris flow was 1.88g-cm-3,the discharge is 1 082m3-s-1,the yield stress of debris flows is more than 6700 Pa, The volume of debris flow was 1.16million cubic meter. The debris flow claimed 2 people are lost, 1 people is wounded, 140 houses are seriously destroyed, DuWen road were silted and check dams, drainage engineering were destroyed. And 15 million (RMB) economic lost. Only 30% sediment of debris deposition was taken away by the 4 times debris flows. New debris flow will be triggered by rainfall in Bayi Gully in the future. It will be a long term work to prevent the debris flows in Bayi Gully
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Proceedings
Part of series
Advances in Engineering Research
Publication Date
April 2017
ISBN
978-94-6252-337-1
ISSN
2352-5401
DOI
https://doi.org/10.2991/amsce-17.2017.36How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Yu Ma
AU  - Caixia Li
PY  - 2017/04
DA  - 2017/04
TI  - Research on the Debris Flow Hazards after the Wenchuan Earthquake in Bayi Gully, Longchi, Dujiangyan, Sichuan Province, China
PB  - Atlantis Press
SP  - 166
EP  - 170
SN  - 2352-5401
UR  - https://doi.org/10.2991/amsce-17.2017.36
DO  - https://doi.org/10.2991/amsce-17.2017.36
ID  - Ma2017/04
ER  -