Hydro-mechanical response with respect to the air ventilation for water filtration in homogeneous soil

Wei Lin Lee, Yih Chin Tai, Chjeng Lun Shieh, Kuniaki Miyamoto, Yu Feng Lin

研究成果: Article

摘要

When water penetrates into soil, interstitial air can become trapped by the infiltrating water. Neglecting the effect of air ventilation could cause deviations in the predicted pore water pressure and the associated effective stress. This study aims at the effect of air ventilation on the coupled hydromechanical responses in homogeneous soil during infiltration. A schematic concept of infiltration conditions (open- and closed-valve) in homogeneous soil is proposed for investigating their impacts on the pore water pressure and effective stress. Experiments of vertical soil column filled with Ottawa sand (ASTM C778 20/30) were designed for two types of air ventilation (namely, open and closed infiltration). The evolution of pore water pressure at the cylinder bottom was recorded, and served as a benchmark problem for evaluating the coupled hydro-mechanical response. Coding with the commercial software, GeoStudio, was employed for the dynamic behaviors of pore-water and -air pressures as well as the evolving effective stress. It was found in both the experiments and numerical investigations that the infiltration condition plays a crucial role for the ascending rate of pore water pressure as well as the associated effective stress. These results illustrate the inevitable impacts of the air ventilation conditions on the mechanical properties of the soil during infiltration.

原文English
頁(從 - 到)2562-2576
頁數15
期刊Journal of Mountain Science
16
發行號11
DOIs
出版狀態Published - 2019 十一月 1

指紋

ventilation
porewater
effective stress
infiltration
subversion
air
water
soil
soil column
interstitial
atmospheric pressure
mechanical property
experiment
software
coding
sand
cause
effect

All Science Journal Classification (ASJC) codes

  • Global and Planetary Change
  • Geography, Planning and Development
  • Geology
  • Earth-Surface Processes
  • Nature and Landscape Conservation

引用此文

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Hydro-mechanical response with respect to the air ventilation for water filtration in homogeneous soil. / Lee, Wei Lin; Tai, Yih Chin; Shieh, Chjeng Lun; Miyamoto, Kuniaki; Lin, Yu Feng.

於: Journal of Mountain Science, 卷 16, 編號 11, 01.11.2019, p. 2562-2576.

研究成果: Article

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