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The Study for Characteristics of Velocity of Erosion and Deposition of Sediment at the Slope

  • Crisisonomy
  • Abbr : KRCEM
  • 2014, 10(10), pp.45-59
  • Publisher : Crisis and Emergency Management: Theory and Praxis
  • Research Area : Social Science > Public Policy > Public Policy in general

SungDuk Kim 1 Ho-Jin Lee 1

1충북대학교

Accredited

ABSTRACT

This study is to analyze the characteristics of the eroded or deposit sediment using Takahashi's method(1992) based on the Finite Difference Method(FDM), according to the variance of channel slope angle and suppling water discharge. For the case of low slope channel angle, erosion and deposition were occurred alternately at the upstream channel. For the case of high slope angle, erosion was dominant at the upstream channel. Particularly, if the slope angle exceeds 15 degree, which is low limit for the debris flow occurrences, erosion was more dominant than other cases. Whenever water discharge was more supplied into the upstream channel, there was equivalent at the upstream channel compared to low supplying water discharge. This is because the debris flow moves down rapidly to the downstream channel.

Citation status

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