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ID 328
Eprint ID
328
フルテキストURL
タイトル(別表記)
On the percolation water model through down from the paddy fields(II) : On the modelization of percolation down from a unit of a field lot of paddy field and the measurable quantities
著者
長堀 金造 岡山大学
三野 徹 京都大学農学部
抄録
In this paper, supposing that the following equation is concluded, it induces the model of a field lot as a unit in the case of thinking about percolation on large project, and moreover we discuss about some quantities measured in practice. ∂x/∂(R2/1 ∂x/∂H)+∂y/∂(R2/1 ∂y/∂H)+R1/1(H0-H)=0 The results in this paper are summarized as follows. l) In treatment of percolation in the paddy field on large project, the unit is one field lot surrounded with drainage canal. Regarding the one field lot as a unit, physical quantities concerned are q , q1, q2, S1 and S2. We induced the relation among them. 2) Thinking" about the vertical section crossing drainage canal in the two dimension, the apparent model indicating" the motion of percolation water in that vertical section is shown in the Fig. 2, and moreover it is transformed to equivalent model shown in the Fig. 4. Parameters indicating the characters of this model are R and RH, or R' and RH'. 3) This model is induced from the start-point of equation (1) concluded in the macro soil model. And then, in the two layer geometrical model L/D=5, D/d=4, as the result of comparing Darcy's dimensional solution with this model in the case of k2/k1=1 and k2/kl=20, both are not very good consistent in the case of k2/k1=1, but are fairly good consistent in the case of k2/k1 = 20. From this result, it may be considered that the propriety of applicable extent (k2/k1 > 10) for the macro model could be proved. 4) The quantities measured in practice are q , S . S1 and S2, and parameters included in the equations should be calculated back from these quantities.
発行日
1973
出版物タイトル
岡山大学農学部学術報告
出版物タイトル(別表記)
Scientific Reports of the Faculty of Agriculture Okayama University
41巻
1号
出版者
岡山大学農学部
出版者(別表記)
Faculty of Agriculture, Okayama University
開始ページ
79
終了ページ
84
ISSN
0474-0254
NCID
AN00033029
資料タイプ
紀要論文
言語
Japanese
論文のバージョン
publisher
査読
無し
Eprints Journal Name
srfa