The Spatial Distribution Characteristics of Seismic Induced Geo-Hazards and Ground Damage Classification in Baisha River

Abstract:

The Baisha river basin was extremely destroyed by the Wenchuan earthquake. This paper extracted the seismic-induced geological disasters data about 26km2 within an area of 368.25km2 by remote sensing interpretation and field investigation. This paper used arcgis to analysis these data, and divided the basin into several belts or zones base on slope, aspect, elevation and stratum lithology. The geo-hazard distribution analysis model was built to find some correlation between disaster distribution and geological factors such as terrain, stratum lithology and geomorphology by comparing among the parameters Ps, Ph, and Pc. The results show that most hazards occur where the slope between 30° and 50°, or aspect range is112.5° to 202.5°, and or the elevation between1140m and 3140m, the stratum lithology are the Huangshuihe group and The Middle Proterozoic common granite. At last the research zone is classified into four levels base on ground destroyed grade, and results show that the belts of most hazards located are not always the one destroyed most heavily.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 1727-1733
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.1727
• Online since: November 2012
• Authors: Hua Jun Meng*, Jian Ping Qiao
• Keywords: Baisha Basin, Destruction Classification, Distribution Characteristic, Seismic Induced Geo-Hazard

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