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  1. 紀要掲載論文
  2. 北見工業大学研究報告
  3. Vol.9

Temperature Dependence of Thermal Conductivity of Frozen Soil*

https://kitami-it.repo.nii.ac.jp/records/6443
https://kitami-it.repo.nii.ac.jp/records/6443
8b864711-9d20-423e-941f-1a60b44af824
名前 / ファイル ライセンス アクション
9-1-14.pdf 9-1-14.pdf (5.2 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2007-04-09
タイトル
タイトル Temperature Dependence of Thermal Conductivity of Frozen Soil*
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
著者 Seigo, SAWADA

× Seigo, SAWADA

WEKO 32603

Seigo, SAWADA

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抄録
内容記述タイプ Abstract
内容記述 Using a hand-made thermal probe, measurements were made by a non-stationary absolute method as to the dependence on temperature of thermal conductivity of frozen soil by changing temperature in a range from 20 to -170℃ and keeping as invariable as possible such other factors as moisture content, particle size distribution, mineral composition, dry density, etc. Soil samples were prepared from volcanic ashes, which were sieved so that they comprised particles of 0.105 to 0.250 mm in diameter. The moisture content of each sample was arranged from 0 to 60 percent by adding a corresponding amount of water to oven-dried soil, so every sample had the same dry density. It was revealed that the following three formulas are in a good agreement with the results of the experiment. (i) Thermal conductivity of frozen soil varies with temperature in the following relation : K=A・T^B (A and B are constants ; T is the absolute temperature.) (ii) Thermal conductivity and moisture content have the following relation : K=C・e^<D-w> (C and D are constants : w is the moisture content.) (iii) The value of thermal conductivity K_G calculated from the geometric mean by the following formula agrees well with the value of observed thermal conductivity K: K_G =K^φ_ss・K^φ_aa・K^φ_ww・K^φ_ii, where K_s, K_a, K_w, K_i, express thermal conductivity for soil particle, air, water and ice respectively ; φ_s, φ_a, φ_w, φ_i express volumetric ratio of each component in the same order.
書誌情報 北見工業大学研究報告

巻 9, 号 1, p. 111-122, 発行日 1977-11
フォーマット
内容記述タイプ Other
内容記述 application/pdf
著者版フラグ
値 publisher
出版者
出版者 北見工業大学
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