Risk Assessment of the Debris Flow Gully in Tibet Southeast by Set Pair Analysis Method

Abstract:

Risk assessment of debris flow is the core content for debris flow disaster forecasting and prevention work. And then, risk assessment of debris flow also becomes the key method in potential debris flow hazards forecast. However, kinds of hazard-affected indictors will be referred during the risk assessment process. In this study, set pair analysis model for risk assessment of the debris flow gully in Tibet southeast is established. With the model final outputs, it can successfully solve the problem of considering all the weight values of the hazard-affected indictors in debris flow evaluation system. Finally, risk assessment of typical debris flow gullies in Tibet southeast area are conducted out by the set pair analysis model, and the model outputs also give a well agreement to the actual.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 930-934
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.930
• Online since: February 2014
• Authors: Pei Qing Wang, Jiang Xu, Wen Wu Ye, Shuai Jie Guo
• Keywords: Debris Flow, Risk Assessment, Set Pair Analysis (SPA), Tibet Southeast

References

[1] Y.H. Li, Q.G. Jiang, S.B. Zhan: Geological Hazards evaluation system of the Nyingchi area, eastern Tibet China based on the AMFP theory. Geo. Bull. of China, Vol. 26, (2007), pp.108-113.

[2] G.S. Hu and N.S. Chen: Classification and initiation conditions of debris flows in Linzhi area, Tibet. Bulletin of Soil and Water Conservation, Vol. 31, (2011), pp.193-197.

[3] J.W. Zhao: Mountain gully debris flow risk evaluation and characteristics of water conservancy and hydropower engineering. Lanzhou: Lanzhou University, (2012), China.

[4] M.W. Wang, L. Li and J.L. Jin: An improved set pair analysis model for evaluation of dangerous degree of debris flow. Journal of Natural Disasters, Vol. 18, (2009), pp.124-128.

[5] Y.H. Wu, S.Y. Cao and F.G. Yang: A new approach to regional debris flow risk assessment based on set pair analysis. J. of Sichuan Uni. (Eng. Sci. Edition), Vol. 44 (2012), pp.54-59.

[6] G.S. Hu, N.S. Chen, M.F. Deng: Analysis of debris flow-prone and dangerous area in Nyingchi of Tibet based on GIS. Research of Soil and Water Conservation, Vol. 19, (2012), pp.195-200.

[7] W.S. Wang, J.L. Jin and Y.Q. Li: Risk degree assessment of natural disaster based on set pair analysis method. J. of Sichuan Uni. (Eng. Sci. Edition), Vol. 41, (2009), pp.6-12.

[8] Q. Li: Vulnerability and risk assessment based on the road Line G212 Longnan section in highway debris flow disaster. Xi'an: Chang-an University, China, (2009).

[9] X. Yang: Study on change characteristic of glacier and perennial snowfield and debris flow susceptibility evaluation in Linzhi. Chengdu: Chengdu University of Technology, China, (2012).

[10] W.S. Wang, Y.Q. Li and J.L. Jin: Set pair analysis for hydrology and water resource systems. Beijing: Science Press, China, (2010).