Soil gas and radon entry into a simple test structure: Comparison of experimental and modelling results

C.E. Andersen, J. Søgaard-Hansen, B. Majborn

    Research output: Contribution to journalJournal articleResearch

    Abstract

    A radon test structure has been established at a field site at Riso National Laboratory. Measurements have been made of soil gas entry rates, pressure couplings and radon depletion. The experimental results have been compared with results obtained from measured soil parameters and a two-dimensional steady-state numerical model of Darcy flow and combined diffusive and advective transport of radon. For most probe locations, the calculated values of the pressure couplings and the radon depletion agree well with the measured values, thus verifying important elements of the Darcy flow approximation, and the ability of the model to treat combined diffusive and advective transport of radon. However, the model gives an underestimation of the soil gas entry rate. Even if it is assumed that the soil has a permeability equal to the highest of the measured values, the model underestimates the soil gas entry rate by a factor of two.
    Original languageEnglish
    JournalRadiation Protection Dosimetry
    Volume56
    Issue number1-4
    Pages (from-to)151-155
    ISSN0144-8420
    Publication statusPublished - 1994

    Cite this

    @article{1b6fbb0d27a846959ed68afcea8c4a83,
    title = "Soil gas and radon entry into a simple test structure: Comparison of experimental and modelling results",
    abstract = "A radon test structure has been established at a field site at Riso National Laboratory. Measurements have been made of soil gas entry rates, pressure couplings and radon depletion. The experimental results have been compared with results obtained from measured soil parameters and a two-dimensional steady-state numerical model of Darcy flow and combined diffusive and advective transport of radon. For most probe locations, the calculated values of the pressure couplings and the radon depletion agree well with the measured values, thus verifying important elements of the Darcy flow approximation, and the ability of the model to treat combined diffusive and advective transport of radon. However, the model gives an underestimation of the soil gas entry rate. Even if it is assumed that the soil has a permeability equal to the highest of the measured values, the model underestimates the soil gas entry rate by a factor of two.",
    keywords = "Nuklear sikkerhed og str{\aa}lingsbeskyttelse",
    author = "C.E. Andersen and J. S{\o}gaard-Hansen and B. Majborn",
    year = "1994",
    language = "English",
    volume = "56",
    pages = "151--155",
    journal = "Radiation Protection Dosimetry",
    issn = "0144-8420",
    publisher = "Oxford University Press",
    number = "1-4",

    }

    Soil gas and radon entry into a simple test structure: Comparison of experimental and modelling results. / Andersen, C.E.; Søgaard-Hansen, J.; Majborn, B.

    In: Radiation Protection Dosimetry, Vol. 56, No. 1-4, 1994, p. 151-155.

    Research output: Contribution to journalJournal articleResearch

    TY - JOUR

    T1 - Soil gas and radon entry into a simple test structure: Comparison of experimental and modelling results

    AU - Andersen, C.E.

    AU - Søgaard-Hansen, J.

    AU - Majborn, B.

    PY - 1994

    Y1 - 1994

    N2 - A radon test structure has been established at a field site at Riso National Laboratory. Measurements have been made of soil gas entry rates, pressure couplings and radon depletion. The experimental results have been compared with results obtained from measured soil parameters and a two-dimensional steady-state numerical model of Darcy flow and combined diffusive and advective transport of radon. For most probe locations, the calculated values of the pressure couplings and the radon depletion agree well with the measured values, thus verifying important elements of the Darcy flow approximation, and the ability of the model to treat combined diffusive and advective transport of radon. However, the model gives an underestimation of the soil gas entry rate. Even if it is assumed that the soil has a permeability equal to the highest of the measured values, the model underestimates the soil gas entry rate by a factor of two.

    AB - A radon test structure has been established at a field site at Riso National Laboratory. Measurements have been made of soil gas entry rates, pressure couplings and radon depletion. The experimental results have been compared with results obtained from measured soil parameters and a two-dimensional steady-state numerical model of Darcy flow and combined diffusive and advective transport of radon. For most probe locations, the calculated values of the pressure couplings and the radon depletion agree well with the measured values, thus verifying important elements of the Darcy flow approximation, and the ability of the model to treat combined diffusive and advective transport of radon. However, the model gives an underestimation of the soil gas entry rate. Even if it is assumed that the soil has a permeability equal to the highest of the measured values, the model underestimates the soil gas entry rate by a factor of two.

    KW - Nuklear sikkerhed og strålingsbeskyttelse

    M3 - Journal article

    VL - 56

    SP - 151

    EP - 155

    JO - Radiation Protection Dosimetry

    JF - Radiation Protection Dosimetry

    SN - 0144-8420

    IS - 1-4

    ER -