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Int. J. Environ. Res. Public Health 2015, 12(11), 13861-13870; doi:10.3390/ijerph121113861

Regional Risk Evaluation of Flood Disasters for the Trunk-Highway in Shaanxi, China

Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’An 710064, China
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Academic Editor: Miklas Scholz
Received: 21 April 2015 / Revised: 26 October 2015 / Accepted: 26 October 2015 / Published: 29 October 2015
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Abstract

Due to the complicated environment there are various types of highway disasters in Shaanxi Province (China). The damages caused are severe, losses are heavy, and have rapidly increased over the years, especially those caused by flood disasters along the rivers in mountainous areas. Therefore, research on risk evaluations, which play important roles in the prevention and mitigation of highway disasters are very important. An evaluation model was established based on the superposition theory of regional influencing factors to highway flood disasters. Based on the formation mechanism and influencing factors of highway flood disasters, the main influencing factors were selected. These factors include rainstorms, terrain slopes, soil types, vegetation coverage and regional river density, which are based on evaluation indexes from climate conditions and underlying surface of the basin. A regional risk evaluation of highway flood disasters in Shaanxi was established using GIS. The risk index was divided into five levels using statistical methods, in accordance with the regional characteristics of highway flood disasters. Considering the difference in upfront investments, road grade, etc, between expressways and trunk-highways in China, a regional risk evaluation of trunk-highway flood disasters was completed. The evaluation results indicate that the risk evaluation is consistent with the actual situation. View Full-Text
Keywords: highway engineering; flood disaster; risk evaluation; trunk-highway; GIS highway engineering; flood disaster; risk evaluation; trunk-highway; GIS
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Qi, H.-L.; Tian, W.-P.; Li, J.-C. Regional Risk Evaluation of Flood Disasters for the Trunk-Highway in Shaanxi, China. Int. J. Environ. Res. Public Health 2015, 12, 13861-13870.

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