GIS-Information Method Based Risk Evaluation for Debris Flow in Chencang District

Abstract:

This study chooses chencang district in Baoji city as the study area.To use ArcGIS combination information method, slected engineering geological lithologic, ground motion peak acceleration, geological structure, elevation, geomorphological types, slope, annual rainfall, human engineering activities and land use type as the main evaluation factors,for debris flow risk assessment. Debris flow risk is divided into an extreme high risk,high risk,moderate risk,low risk and extreme low risk levels,The evaluation result show that 11.01% of area is extreme high risk,include 12 debris flows; 24.94% of area is high risk,include 9 debris flows; 20.78% of area is moderate risk,include 4debris flows; 26.35% of area is low risk,include 3 debris flows;16.92% of the area is extreme low risk areas,there is no debris flows.

• Periodical: Advanced Materials Research (Volumes 807-809)
• Pages: 1928-1933
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.807-809.1928
• Online since: September 2013
• Authors: Xi Cheng Xue, Liang Liang Zheng
• Keywords: Debris Flow, GIS, Information Model, Risk Evaluation

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