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林道に関する研究III : 盛土工法に関する研究(第一報)
http://hdl.handle.net/10091/13973
http://hdl.handle.net/10091/1397362b0b8b5-5808-4f2f-9d6d-6dcebc6ef6e4
名前 / ファイル | ライセンス | アクション |
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Agri_Forests-09-04.pdf (1.1 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2012-03-07 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 林道に関する研究III : 盛土工法に関する研究(第一報) | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Studies on the Forest Road III : On the embankment practice 1 | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
著者 |
木村, 和弘
× 木村, 和弘× 千野, 敦義× 酒井, 信一 |
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出版者 | ||||||
出版者 | 信州大学農学部附属演習林 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 信州大学農学部演習林報告 9: 71-97(1972) | |||||
書誌情報 |
信州大学農学部演習林報告 巻 9, p. 71-97, 発行日 1972-08-05 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The purposes of this study are to pursue a practice of forest road from the point of view of management and to protect a nature environment destruction. And the soil test purposes to grasp the essential properties of soils for an approximate method. As the basic reserch for the study of embankment practice of forest road, we tried to explain the engneering properties of embankment soil and to make clear the relation among the settlement of surface, the cone index and the trafficability. The results are as follows. (1) On the experiment zone, the bed-rock is the Takato granite which is divided to the granite of Riyoke Zone.(2) The upper soils are composed of the freshly weathered coarese-grained soil (grayish brown color), the weathered fine-grained soil (brown color) and the organic soil. The embankment soils of 15 samples are mixed those soils. (3) The samples (No. 1, 2, 3, 4) with more fine soil are unstable to soil property, but the samples (No. 5, 6, 7, 8, 9, 10) with more coarese soil have enough bearing capasity for base. (4) The relation is observed between the settlement of surfase (Δh_N) and the number of passes of a caterpiller tractor (N) as follows. Δh_N=N/a+bN…(1) Δh_N/Δh_∞=N/a/b+N…(2) where Δh_∞ is the final settlement and a and b are coefficients whose values are obtained by a least squares method. The degree of compaction of each soil is showed by the equation (2). (5) In the relation between the cone index (q_c) and the number of passes of a caterpiller tractor(N), the samples (No. 1, 2, 3, 4) are effected by remolding when N increaes, but q_c decreased. (6) The relation is observed between the dry density (r_d) and the cone index (q_c) as follows. the samples of fine soil:r_d=0.094q_c+0.468 the samples of coarse soil: r_d=0.039 q_c+1.055 (7) The settlement of surface (Δh) is related to the cone index (q_c) as follows. the samples of fine soil: q_c=0.107 Δh+4.095 the samples of coarse soil: q_c=0.488 Δh+3.606 | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0559-8613 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00121330 | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |