Relation between seepage force and velocity of sand particles during sand boiling

K. Fujisawa, A. Murakami, Shin-ichi Nishimura, Takayuki Shuku

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Thus far, the focus of studies on seepage failure, known as sand boiling or the piping phenomenon, has been to determine the critical hydraulic gradient or the critical seepage flow velocity. However, the transport of soil after seepage failure also needs to be well investigated in order to estimate the damage to soil structures or the ground. The purpose of this study is to experimentally investigate the relationship between the seepage force and the velocity of the sand particles during sand boiling induced by upward and horizontal seepage flows. In the experiments, silica sand is used as the test material and the migration velocities of the seepage water and the sand particles are calculated from the measured amounts of their discharge. The test results reveal that the equilibrium of the forces exerted on the sand particles, i.e., gravity, buoyancy and fluid-particle interaction, can be successfully used to estimate the velocity of the sand particles subjected to upward seepage flow and that the seepage force needed for the horizontal transport of the sand tends to decrease as the velocity of the sand particles increases.

Original languageEnglish
Pages (from-to)9-17
Number of pages9
JournalGeotechnical Engineering
Volume44
Issue number2
Publication statusPublished - Jun 2012

Fingerprint

Seepage
Boiling liquids
seepage
Sand
sand
Soils
Silica sand
Particle interactions
particle
Buoyancy
piping
Flow velocity
soil structure
flow velocity
Gravitation
buoyancy
Hydraulics
silica
gravity
hydraulics

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering

Cite this

Relation between seepage force and velocity of sand particles during sand boiling. / Fujisawa, K.; Murakami, A.; Nishimura, Shin-ichi; Shuku, Takayuki.

In: Geotechnical Engineering, Vol. 44, No. 2, 06.2012, p. 9-17.

Research output: Contribution to journalArticle

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