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Landslides

pp 1–8 | Cite as

Calculating debris flow density based on grain-size distribution

  • Taiqiang Yang
  • Yong LiEmail author
  • Qishu Zhang
  • Yu Jiang
Original Paper
  • 23 Downloads

Abstract

Debris flow density is an important parameter, which reflects the genetic types of debris flow and determines fundamental properties. Debris flow density is usually calculated based on a certain part of the grain composition, using samples collected from deposits more or less long after the occurrence. These methods have two major flaws: the samples from deposits do not coincide with the grain composition of flow, and the used special part of the grain is artificially selected without physically sound basis. This paper proposes a new formula to calculate debris flow density based on analysis of fluid samples collected in Jiangjia Gully, which employs the grain-size distribution parameters that feature the full range of the grain composition.

Keywords

Debris flow Flow density Grain-size distribution Distribution parameters Calculation formula 

Notes

Funding information

This research is supported by the Natural Science Foundation of China (grant no. 41471011) and the Key International S&T Cooperation Academy of Sciences (grant no. 2016YFE0122400).

Supplementary material

10346_2018_1130_MOESM1_ESM.xlsx (18 kb)
ESM 1 (XLSX 17 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Key Laboratory of Mountain Hazards and Surface ProcessChinese Academy of SciencesChengduChina
  2. 2.Institute of Mountain Hazards and EnvironmentChinese Academy of ScienceChengduChina
  3. 3.University of Chinese Academy of SciencesBeijingChina
  4. 4.School of Civil EngineeringCentral South UniversityChangshaChina
  5. 5.School of Engineering and TechnologyBaoshan UniversityBaoshanChina

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