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Evaluation of Containment Performance from Viewpoints of Diffusion and Dispersion for Impervious Structures at Coastal Landfill Sites

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Abstract

The containment performance of impervious structures is considered the most important performance, which the toxic substances are enclosed in coastal landfill sites. The containment performance is evaluated generally by the hydraulic conductivity and the thickness of impervious structures to focus on an advection. However, the leakage of toxic substances is affected by a diffusion and a dispersion. The diffusion and the dispersion are considered to be easily distinguished on the impervious structure which has the low-hydraulic conductivity. Such phenomena should be considered due to evaluate the containment performance. This is because to improve the containment performance and comprehend leakage of the toxic substances. The containment performance is evaluated from the viewpoint of the diffusion and the dispersion in this research. Concretely, the influence which the toxic substances leaks from impervious structures on the diffusion and the dispersion is evaluated by the infiltration and advection–dispersion analysis on steel-made side impervious walls. In other word, The relation between the leaking amount of toxic substances and coefficient of molecular diffusion, the relation between the travel time or the flow velocity and the leaking amount and the change in the water-level difference are considered respectively. So, the leaking amount which is influenced by a diffusion and a dispersion is considered. Consideration about to secure the containment performance of impervious structure which is restrained leakage by a diffusion and a dispersion.

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Authors and Affiliations

  1. Department of Civil Engineering, College of Engineering, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto, Tokyo, 1358548, Japan

    Shinya Inazumi

  2. Graduate School of Global Environmental Studies, Kyoto University, Yoshida-honmachi, Sakyo, Kyoto, 6068501, Japan

    Maya Manabe

  3. TOMEC Corporation, 1-6-3 Shibadaimon, Minato, Tokyo, 1050012, Japan

    Ken-ichi Shishido

Authors
  1. Shinya Inazumi
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  2. Maya Manabe
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  3. Ken-ichi Shishido
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Correspondence to Shinya Inazumi.

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Inazumi, S., Manabe, M. & Shishido, Ki. Evaluation of Containment Performance from Viewpoints of Diffusion and Dispersion for Impervious Structures at Coastal Landfill Sites. Geotech Geol Eng 35, 2191–2203 (2017). https://doi.org/10.1007/s10706-017-0237-5

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  • DOI: https://doi.org/10.1007/s10706-017-0237-5

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