Approach for urban debris flow risk assessment

TANG Chuan; ZHU Jing

This paper researches the integrated method of urban debris flow risk assessment.The method involves the debris flow hazard zonation,the urban vulnerability evaluation and the risk assessment.The debris flow hazard zonation on the alluvial fan of the study area is caused by overlaying the distributed flow depth and velocity maps,which are produced through the numerical simulation.The detailed land cover information is derived by using the Quickbird high spatial resolution satellite imagery,and then we evaluate the vulnerability value through the different land-use features.Based on a GIS statistical and analytical tool the urban debris flow risk assessment for the study area is completed.This risk zonation map can be used for the debris flow mitigation by identifying hazard prone areas allowing for the avoidance through zoning or other land use polices,and provide risk information for the residents who live in the debris flow prone areas in order to plan the evacuation and prevention.

National Professional Laboratory for Geo-hazard Prevention and Geo-environment Protection, Chengdu University of Technology, Chengdu 610059, China

Funds: The study is financially supported by the National Natural Science Foundation of China (No.40371018).

Received Date: 2005-03-08

Rev Recd Date: 2005-05-30

Publish Date: 2006-05-25

Key words:

Abstract: This paper researches the integrated method of urban debris flow risk assessment.The method involves the debris flow hazard zonation,the urban vulnerability evaluation and the risk assessment.The debris flow hazard zonation on the alluvial fan of the study area is caused by overlaying the distributed flow depth and velocity maps,which are produced through the numerical simulation.The detailed land cover information is derived by using the Quickbird high spatial resolution satellite imagery,and then we evaluate the vulnerability value through the different land-use features.Based on a GIS statistical and analytical tool the urban debris flow risk assessment for the study area is completed.This risk zonation map can be used for the debris flow mitigation by identifying hazard prone areas allowing for the avoidance through zoning or other land use polices,and provide risk information for the residents who live in the debris flow prone areas in order to plan the evacuation and prevention.

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Reference (20)

[1]	United Nations,Department of Humanitarian Affairs.Mitigating Natural Disasters:Phenomena,Effects and Options-A Manual for Policy Makers and Planners[M].New York:United Nations,1991.1-164.
[2]	刘希林,莫多闻.泥石流风险评价[M].成都:四川科技出版社,2002.1-8.
[3]	Carrara A.GIS techniques and statistical models in evaluating landslide hazard[J].Earth Surface Processes and Landforms,1991,16:427-445.
[4]	Alison J R.A GIS for the prediction of landsliding potential and hazard in Southwest Greece[J].Z Geomorphology,1993,87(Suppl.):141-149.
[5]	Morgenstern N R.Toward landslide risk assessment in practice[A].In:Cruden and Fell (eds.) Landslide risk assessment[C].Balkema,Rotterdam,1997,15-24.
[6]	Carrasco R M,Pedraza J F.Hazard Zoning for Landslides Connected to Torrential Floods in the Jerte Valley (Spain) by using GIS Techniques[J].Natural Hazards,2003,30:361-381.
[7]	杜榕桓,康志成,陈循谦,等.云南小江泥石流综合考察与防治规划研究[M].重庆:科学技术文献出版社重庆分社,1987.78-96.
[8]	唐川,周钜乾.泥石流堆积扇危险度分区评价的数值模拟研究[J].灾害学,1994,9(4):7-13.
[9]	Chau K T,Lo K H.Hazard assessment of debris flows for Leung King Estate of Hong Kong by incorporating GIS with numerical simulations[J].Natural Hazards and Earth System Sciences,2004,4:103-116.
[10]	Hueb J,Steinwendtner H.Two-Dimensional Simulation of Two Viscous Debris Flows in Austria[J].Phys Chem Earth (C),2001,26(9):639-644.
[11]	Ayala I A.Geomorphology,natural hazards,vulnerability and prevention of natural disasters in developing countries[J].Geomorphology 47 (2002) 107-124.
[12]	Weichselgartner J.Disaster mitigation:the concept of vulnerability revised[J].Disaster Prevention and Management 2001,2:85-94.
[13]	Raes M E,Foouda Y,Nasr S.GIS assessment of the vulnerability of the Rosetta area,Egypt to impacts of sea rise[J].Environmental Monitoring and Assessment,1997,47(1):59-77.
[14]	Mollerhaug S.Useful vulnerability assessment Information Security Technical Report[R].2003,8(4):78-84.
[15]	宁宝坤,曲国胜,张宁.IKONOS卫星影像在城市防震减灾及震害评价中的应用研究.地震地质.2004,26(1):161-169.
[16]	Van der Sande C J,de Jong S M,de Roo A P J.A segmentation and classification approach of IKONOS-2 imagery for land cover mapping to assist flood risk and flood damage assessment[J].International Journal of Applied Earth Observation and Geoinformation,2003,4:217-229.
[17]	高兴和.地质灾害承灾体易损性探究[J].中国地质矿产经济,2002(4):28-31.
[18]	李闽.地质灾害人口安全易损性区划研究[J].中国地质矿产经济,2002,(8):24-28.
[19]	罗元华.泥石流堆积区灾害破坏损失评价方法[J].中国地质矿产经济.2000,4:33-39.
[20]	张梁,张业成,罗元华.地质灾害灾情评估理论与实践[M].北京:地质出版社,1998.52 -100.

Approach for urban debris flow risk assessment

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