Source activity rates and run-out amount simulation in Zhangjiaping debris

The detailed descriptions of the Zhangjiaping debris-flow source at different periods and its evolution process under different activity rates were investigated in this study with four remote sensing images,DEM,and GIS and RS techniques.It is predicted that the debris-flow will not generate more new sources in the future,but the existing collapses has a possibility of expansion.FLO-2D software was also used to simulate the flushing ranges and the degree of river blocking under three rainfall frequencies for the Zhangjiaping debrisflow.The research results can provide reference for the source prevention and control measures at Zhangjiaping debris-flow,and provide scientific guidance for post disaster reconstruction within the runout zone.

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