Publication result detail

Pressure conditions in the hole erosion test

ŘÍHA, J.; JANDORA, J.

Original Title

Pressure conditions in the hole erosion test

English Title

Pressure conditions in the hole erosion test

Type

WoS Article

Original Abstract

The hole erosion test (HET) is used in the study of soil erosion in the case of what is known as "piping" when concentrated leaks occur. The HET anables the determination of soil erosion characteristics such as the critical shear stress along the pre-formed hole (pipe) and the coefficient of soil erosion. Normally, in the HET, the hydraulic gradient is determined from the difference between the piezometric heads measured at the inflow and outflow chambers (upstream and downstream of the soil specimen). Hydraulic analysis shows that such measurements ingnore losses at the entrance and exit of the hole, causing the overstimation of the hydraulic gradient along the lenght of the hole, and thus the calculated shear stress.

English abstract

The hole erosion test (HET) is used in the study of soil erosion in the case of what is known as "piping" when concentrated leaks occur. The HET anables the determination of soil erosion characteristics such as the critical shear stress along the pre-formed hole (pipe) and the coefficient of soil erosion. Normally, in the HET, the hydraulic gradient is determined from the difference between the piezometric heads measured at the inflow and outflow chambers (upstream and downstream of the soil specimen). Hydraulic analysis shows that such measurements ingnore losses at the entrance and exit of the hole, causing the overstimation of the hydraulic gradient along the lenght of the hole, and thus the calculated shear stress.

Keywords

hole erosion test; HET; hydraulic gradient; piping; shear stress; Bernoulliho principle; turbulent flow modelling

Key words in English

hole erosion test; HET; hydraulic gradient; piping; shear stress; Bernoulliho principle; turbulent flow modelling

Authors

ŘÍHA, J.; JANDORA, J.

RIV year

2016

Released

06.01.2015

Publisher

Canadian Science Publishing

Location

Ottawa, Canada

ISBN

1208-6010

Periodical

CANADIAN GEOTECHNICAL JOURNAL

Volume

52(1)

Number

1

State

Canada

Pages from

114

Pages to

119

Pages count

6

BibTex

@article{BUT112810,
  author="Jaromír {Říha} and Jan {Jandora}",
  title="Pressure conditions in the hole erosion test",
  journal="CANADIAN GEOTECHNICAL JOURNAL",
  year="2015",
  volume="52(1)",
  number="1",
  pages="114--119",
  doi="10.1139/cgj-2013-0474",
  issn="0008-3674"
}