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  1. 070 農学部, 大学院農学研究科
  2. 0702 紀要 ・刊行物
  3. 07021 信州大学農学部紀要
  4. Vol. 04

小渋分水工に関する実験的研究

http://hdl.handle.net/10091/2229
http://hdl.handle.net/10091/2229
da3c92f7-97b3-4eee-b147-67df64dfdd85
名前 / ファイル ライセンス アクション
Agriculture04-03-06.pdf Agriculture04-03-06.pdf (651.0 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2009-03-03
タイトル
言語 ja
タイトル 小渋分水工に関する実験的研究
タイトル
言語 en
タイトル Experimental Study on Koshibu Diversion Works
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 酒井, 信一

× 酒井, 信一

WEKO 34173

酒井, 信一

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千野, 敦義

× 千野, 敦義

WEKO 34174

千野, 敦義

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出版者
出版者 信州大学農学部
引用
内容記述タイプ Other
内容記述 信州大学農学部紀要 4(3): 251-264(1967)
書誌情報 信州大学農学部紀要

巻 4, 号 3, p. 251-264, 発行日 1967-12-25
抄録
内容記述タイプ Abstract
内容記述 The structure of Koshibu diversion works are as follows. (1) The diversion tunnel (circular tunnel with diameter of 1200mm and length of 256m) branches right angle off main driving aqueduct tunnel (standard horseshoe tunnel with 1.19m radius of the arch ring and I=1/1000). (2) The end of the diversion tunnel connects with the rectangular reservoir. (3) The gate diversion works has the sluice gate of underflow type in the downstream side wall of the reservoir. This kind of diversion works cannot be solved adequately by theory alone because of the complexity of the structure. Therefore we practised the model test for the purpose of investigating the discharge of diversion tunnel and the values of loss of head corresponding to different discharges of main tunnel and different height of gate opening, In this experiment, the scale of model is 1/9.6, and coefficient of roughness of tunnel is 0.00978. Chapter V of this paper contains discussion of various losses of head due to branching. This experiment indicates that the total loss of head can be expressed by the following approximate equation. he=(6.0795+ 195ε/d²) υ₁²/2g in which e is q₁/q₀ (q₀ and q₁ are the respective discharge for main tunnel and diversion tunnel), d is the height of gate opening, υ₁ is the mean velocity for diversion tunnel. It is noted that the second term of the approximate equation shows mainly losses of head, being due to turnout and contraction at the entrance and it varies as e and varies inversely as the square of d. The discussion in Chapter VI presents some improvements, which we have tried in assistance with the results of this experiment. Hereupon the discharge for diversion tunnel is estimated in theory by formula for free flow through the sluice gate.
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 0583-0621
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AN00121352
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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