An approach from earthquake-induced landslides identification to numerical simulation of debris flow

Yange Li, Guangqi Chen, Chuan Tang, Lu Zheng, Yingbin Zhang

Research output: Contribution to journalArticle

Abstract

On August 14, 2010, an intense and prolonged rainfall triggered debris flow in Hongchun Gully, Yingxiu Town, the epicenter of Wenchuan earthquake. The event transported huge sediment material to the watercourse of the Minjiang River and formed a natural dam, resulting in flash flood in the new reconstruction Yingxiu Town. In order to predict the run out distance and extent of the hazard area of such kind of debris flows, we develop an approach from earthquake-induced landslides investigation to numerical simulation of debris flow in this study. At first, we determined the loose deposits by aerial photography identification and field investigation. Six large scale landslides were found in Hongchun Gully by using the object-oriented analysis remote sensing technique. And then, a two-dimensional numerical model was used to simulate the transport process of debris flow. Raster grid network of digital elevation model generated from GIS was used for the finite difference mesh. Results from the numerical simulation showed a good agreement with actual movement and deposition distribution of Hongchun Gully debris flow.

Original languageEnglish
Pages (from-to)69-83
Number of pages15
JournalMemoirs of the Faculty of Engineering, Kyushu University
Volume72
Issue number2
Publication statusPublished - Aug 23 2012

Fingerprint

Landslides
Debris
debris flow
landslide
Earthquakes
earthquake
gully
Computer simulation
simulation
Aerial photography
flash flood
aerial photography
raster
earthquake epicenter
transport process
Geographic information systems
Dams
digital elevation model
Rain
Numerical models

All Science Journal Classification (ASJC) codes

  • Energy(all)
  • Atmospheric Science
  • Earth and Planetary Sciences(all)
  • Management of Technology and Innovation

Cite this

An approach from earthquake-induced landslides identification to numerical simulation of debris flow. / Li, Yange; Chen, Guangqi; Tang, Chuan; Zheng, Lu; Zhang, Yingbin.

In: Memoirs of the Faculty of Engineering, Kyushu University, Vol. 72, No. 2, 23.08.2012, p. 69-83.

Research output: Contribution to journalArticle

@article{8497a65833e84c75a89d612969e7b9fc,
title = "An approach from earthquake-induced landslides identification to numerical simulation of debris flow",
abstract = "On August 14, 2010, an intense and prolonged rainfall triggered debris flow in Hongchun Gully, Yingxiu Town, the epicenter of Wenchuan earthquake. The event transported huge sediment material to the watercourse of the Minjiang River and formed a natural dam, resulting in flash flood in the new reconstruction Yingxiu Town. In order to predict the run out distance and extent of the hazard area of such kind of debris flows, we develop an approach from earthquake-induced landslides investigation to numerical simulation of debris flow in this study. At first, we determined the loose deposits by aerial photography identification and field investigation. Six large scale landslides were found in Hongchun Gully by using the object-oriented analysis remote sensing technique. And then, a two-dimensional numerical model was used to simulate the transport process of debris flow. Raster grid network of digital elevation model generated from GIS was used for the finite difference mesh. Results from the numerical simulation showed a good agreement with actual movement and deposition distribution of Hongchun Gully debris flow.",
author = "Yange Li and Guangqi Chen and Chuan Tang and Lu Zheng and Yingbin Zhang",
year = "2012",
month = "8",
day = "23",
language = "English",
volume = "72",
pages = "69--83",
journal = "Memoirs of the Faculty of Engineering, Kyushu University",
issn = "1345-868X",
publisher = "Kyushu University, Faculty of Science",
number = "2",

}

TY - JOUR

T1 - An approach from earthquake-induced landslides identification to numerical simulation of debris flow

AU - Li, Yange

AU - Chen, Guangqi

AU - Tang, Chuan

AU - Zheng, Lu

AU - Zhang, Yingbin

PY - 2012/8/23

Y1 - 2012/8/23

N2 - On August 14, 2010, an intense and prolonged rainfall triggered debris flow in Hongchun Gully, Yingxiu Town, the epicenter of Wenchuan earthquake. The event transported huge sediment material to the watercourse of the Minjiang River and formed a natural dam, resulting in flash flood in the new reconstruction Yingxiu Town. In order to predict the run out distance and extent of the hazard area of such kind of debris flows, we develop an approach from earthquake-induced landslides investigation to numerical simulation of debris flow in this study. At first, we determined the loose deposits by aerial photography identification and field investigation. Six large scale landslides were found in Hongchun Gully by using the object-oriented analysis remote sensing technique. And then, a two-dimensional numerical model was used to simulate the transport process of debris flow. Raster grid network of digital elevation model generated from GIS was used for the finite difference mesh. Results from the numerical simulation showed a good agreement with actual movement and deposition distribution of Hongchun Gully debris flow.

AB - On August 14, 2010, an intense and prolonged rainfall triggered debris flow in Hongchun Gully, Yingxiu Town, the epicenter of Wenchuan earthquake. The event transported huge sediment material to the watercourse of the Minjiang River and formed a natural dam, resulting in flash flood in the new reconstruction Yingxiu Town. In order to predict the run out distance and extent of the hazard area of such kind of debris flows, we develop an approach from earthquake-induced landslides investigation to numerical simulation of debris flow in this study. At first, we determined the loose deposits by aerial photography identification and field investigation. Six large scale landslides were found in Hongchun Gully by using the object-oriented analysis remote sensing technique. And then, a two-dimensional numerical model was used to simulate the transport process of debris flow. Raster grid network of digital elevation model generated from GIS was used for the finite difference mesh. Results from the numerical simulation showed a good agreement with actual movement and deposition distribution of Hongchun Gully debris flow.

UR - http://www.scopus.com/inward/record.url?scp=84865152454&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84865152454&partnerID=8YFLogxK

M3 - Article

VL - 72

SP - 69

EP - 83

JO - Memoirs of the Faculty of Engineering, Kyushu University

JF - Memoirs of the Faculty of Engineering, Kyushu University

SN - 1345-868X

IS - 2

ER -