WEKO3
アイテム
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代表的沖縄本島土壌の乾燥過程とスレーキングの関係(農業工学科)
http://hdl.handle.net/20.500.12000/4339
http://hdl.handle.net/20.500.12000/4339aa520d76-ba1b-4597-81ee-34c7b7e8fda9
| 名前 / ファイル | ライセンス | アクション | |
|---|---|---|---|
KJ00000162524.pdf
|
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| Item type | デフォルトアイテムタイプ（フル）(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2008-02-14 | |||||||||
| タイトル | ||||||||||
| タイトル | 代表的沖縄本島土壌の乾燥過程とスレーキングの関係(農業工学科) | |||||||||
| 言語 | ja | |||||||||
| 作成者 |
宜保, 清一
× 宜保, 清一
× Gibo, Seiichi
|
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | (1)国頭礫層土壌と泥灰岩土壌のスレーキングは乾燥過程によって著しく影響され, PF5.5∿PF6.5の水分状態で高い崩壊率を示し, その経時変化も顕著である。石灰岩土壌は耐水性であり乾燥過程の影響もほとんど受けない。(2)高含水領域からPF4.5まではスレーキング現象がほとんどみられない。(3)PF6.5∿PF7.0では外皮様薄層が形成されるため崩壊に幾分時間的遅れがあり, 量的にもやや少ない。(4)3試料は, その主要粘土鉱物組成や理化学的性質を反映し, スレーキングの形態を異にする。(5)島尻泥灰岩土壌は, 母岩(泥岩)の工学的性質(6,8)を反映し, 他2試料に比して膨張・収縮挙動が顕著である。以上のように, スレーキング試験は, 雨滴の衝撃作用による供試土崩壊試験(4)の場合と比較して, 低PFと高PF領域において量的に多少異なるものの, ほぼ同様な崩壊現象を示した。また国頭礫層土壌は, スレーキングの結果からも高い受食性土壌であることが明らかになった。なお本研究は昭和49年度文部省科学研究費の補助を受けたものの一部である。終りに, 実険にあたって終始協力して下さった専攻生の上運天英夫(現沖縄県土地調査局勤務)と又吉盛正(現沖縄県農林水産部勤務)の両氏に謝意を表したい。 | |||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | This paper deals with the effect of drying upon slaking and the swelling and shrinking properties of the erosive soil from Kunigami gravels (sample : Hamada, Kin-son), the soil from Shimajiri mudstone (sample : Tomigusuku, Tomigusuku-son) and the soil from Ryukyu limestone (sample : Komesu, Itomancity) The experimental results are summarized as follows : 1. Hamada and Tomigusuku undergo to the influence of drying and show marked phenomena of slaking by drying in PF5.5-PF6.5 of the soil moisture. Komesu is the Water-stable soil, and the amount of its slaking is a little. 2. The three samples have their own phenomena of slaking according to the clay minerals and chemical composition of soil. 3. The behaviour of swelling and shrinkage of Tomigusuku is remarkable as compared with those of the other samples and seems to reflect the engineening properties of parent rock, Shimajiri mudstone. | |||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 紀要論文 | |||||||||
| 出版者 | ||||||||||
| 言語 | ja | |||||||||
| 出版者 | 琉球大学農学部 | |||||||||
| 言語 | ||||||||||
| 言語 | jpn | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 識別子 | ||||||||||
| 識別子 | http://hdl.handle.net/20.500.12000/4339 | |||||||||
| 識別子タイプ | HDL | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 0370-4246 | |||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AN00250548 | |||||||||
| 収録物名 | ||||||||||
| 言語 | ja | |||||||||
| 収録物名 | 琉球大学農学部学術報告 | |||||||||
| 書誌情報 |
号 22, p. 279-287, 発行日 1975-12-01 |
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