Microbe-induced desaturation of sand using pore pressure development by way of denitrification

研究成果: ジャーナルへの寄稿記事

抄録

Microbe-induced desaturation by denitrification is a technique that shows potential for mitigating the risk of liquefaction in sandy ground. The process proposed in this study, desaturation through denitrification, was tested using a sand column experiment. The experimental results showed the development of excessive pore pressure induced by biogas production by way of denitrification, which created a hydraulic gradient in the pores in the sand and eventually resulted in water seepage through these pores towards the surface of the sand. The experimental degree of soil water saturation was reduced by 11% at the centre of the specimen after gas production by microorganisms had completed. This indicates that it is possible to adjust the degree of saturation across small ranges by arranging these microbial reactions. However, the pore structure of the soil also strongly affects pore pressure development and determines the final degree of saturation. The general understanding of target soil properties, as well as the microbial reaction under target conditions, must improve before this technique is applied to practical situations.

元の言語英語
ページ(範囲)1-4
ページ数4
ジャーナルGeotechnique Letters
8
発行部数1
DOI
出版物ステータス出版済み - 3 1 2018

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Denitrification
Pore pressure
pore pressure
denitrification
Sand
saturation
Soils
sand
Biogas
Seepage
Liquefaction
Pore structure
biogas
gas production
liquefaction
Microorganisms
Water
soil property
microorganism
soil water

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)

これを引用

Microbe-induced desaturation of sand using pore pressure development by way of denitrification. / Nakano, Akiko.

:: Geotechnique Letters, 巻 8, 番号 1, 01.03.2018, p. 1-4.

研究成果: ジャーナルへの寄稿記事

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