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全文: "成羽川"
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  • 赤穗 良輔, 前野 詩朗
    土木学会論文集B1(水工学)
    2019年 75 巻 1 号 378-386
    発行日: 2019年
    公開日: 2020/03/20
    ジャーナル 認証あり

     2018年7月の豪雨により,岡山県西部を南流する高梁川の中流域では,堤防決壊や氾濫により甚大な被害を受けた.高梁川と成羽川の合流点付近から下流の岡山県管理区間の被災状況を調査した結果,合流点付近の成羽川や,合流点より下流の高梁川と国道180号線が平行している箇所で多くの浸水被害が生じたことが分かった.本研究では,被災状況を現地調査するとともに,洪水の氾濫シミュレーションを行うことにより,浸水メカニズムを明らかにした.また,高梁川と成羽川の合流点付近の落合町阿部地区では越水による浸水被害が生じたが,洪水の住宅地への侵入を防ぐ目的で設置されていた陸閘が閉じていなかったため,陸閘の閉鎖の有無が浸水被害に及ぼす影響を検討した結果,陸閘を閉鎖することで浸水被害を軽減できることを示した.

  • 原 文太郎
    コンクリートジャーナル
    1968年 6 巻 4 号 18-30
    発行日: 1968/04/15
    公開日: 2013/04/26
    ジャーナル フリー
  • ―複数のピークをもつ洪水の場合―
    山崎 不二夫
    水利科学
    1979年 23 巻 3 号 49-61
    発行日: 1979/08/01
    公開日: 2020/03/31
    ジャーナル フリー
  • 占部 敦史, 谷口 順彦, 野口 大毅, 海野 徹也
    日本水産学会誌
    2013年 79 巻 5 号 840-850
    発行日: 2013年
    公開日: 2013/09/17
    ジャーナル フリー
    3 系統の放流種苗とダム湖産が混在した広島県成羽川のアユを供試魚とし,DNA マーカー,耳石 Sr/Ca 比および側線上方横列鱗数を併用することで個体レベルの系統判別に成功した。7 月中旬から 8 月末にかけ友釣りで採集した 60 尾の内訳は琵琶湖産が 61.7%,ダム湖産が 28.3%,天然海産が 1.7%,人工種苗が 8.3% となったが,9 月に刺し網で採集した 58 尾は琵琶湖産が 58.6%,ダム湖産が 3.5%,人工種苗が 37.9% となった。結果に基づき,系統判別マーカーの有効性や各系統の資源貢献について考察した。
  • 中 孝仁
    日本地質学会学術大会講演要旨
    1989年 1989 巻
    発行日: 1989/04/25
    公開日: 2017/08/25
    会議録・要旨集 フリー
  • 山崎 不二夫, 風間 輝雄
    農業土木学会誌
    1979年 47 巻 4 号 261-266,a1
    発行日: 1979/04/01
    公開日: 2011/08/11
    ジャーナル フリー
    複数のピークをもつ洪水はけっして珍しくない。このような洪水の場合, 前のピークを乗切るためにダムの治水容量の大半が消費され, 次のピークに対して洪水調節機能を失う例がしばしば見られる。ここでは, 2つの実例について問題点を究明し, それを解決する具体的な方法を提案した。
  • とくに成羽川地域の酸性火成岩類について
    正路 徹也, 高橋 敏夫, 武内 寿久禰
    日本鉱業会誌
    1979年 95 巻 1091 号 1-5
    発行日: 1979/01/25
    公開日: 2011/07/13
    ジャーナル フリー
    Fluid inclusions in the granitic intrusives occurring in Nariwa-gawa district have been observed. Based on the relationship between fluid inclusions and mineralization; the intrusive stocks are divided into five types.(i) The stock with polyphase inclusions and related with mineralization (P-M type): MG. KY. AT. KS. TN, OS, YK.(ii) Thectnrk with nnlvphace incliicinns but not related with mineralization (P-U type): KB, SD, UD.(iii) The stock with liquid inclusions and relatea with minerah. zation (L-M type): HK.(iv) The stock with liquid inclusions but not related with mineralization (L. U type): OK, YN, SS (v) The stock without fluid inclusion and not related with mineralization (N-U type): NR.The resnlt indicafes that the mineralization is generally found near the stocks containing polyphase inclusions, and that the mineralization is not found generally in the vicinity of the stock with only liquid inclusions or without fluid inclusions, although a few exceptional cases are found.
  • 仲田 春雄
    日本釀造協會雜誌
    1984年 79 巻 2 号 112
    発行日: 1984/02/15
    公開日: 2011/11/04
    ジャーナル フリー
  • 赤木 健
    地質学雑誌
    1925年 32 巻 378 号 96-105
    発行日: 1925/03/20
    公開日: 2008/04/11
    ジャーナル フリー
  • 横山 忠正
    地球科学
    1980年 34 巻 6 号 320-332
    発行日: 1980/11/25
    公開日: 2017/07/26
    ジャーナル オープンアクセス
    The limestone formation distributed over northern part of Oga-Dai, one of the well-known limestone plateaus in central Chugoku, Southwest Japan, is called Nakamura Limestone and has been considered equivalent to Koyama Limestone at southern part of Oga-Dai. This limestone is composed mainly of massive limestone with schalstein at the base. It is overlain by the Upper Permian Uji Formation, which consists of black shale with some amount of limestone-conglomerate. Biostratigraphically, the Nakamura Limestone is divided, in ascending order, into seven zones of Endothyra (upper Lower Carboniferous), Millerella, Profusulinella, Fusulinella-Fusulina (Upper Carboniferous), Pseudoschwagerina (Lower Permian), Parafusulina and Neoschwagerina (Middle Permian), while the Uji Formation is represented by the Yabeina zone. By the microscopic petrographical examination of thin sections of limestone from more than 500 localities and from subsurface handspecimens obtained from 17 boring cores, the following eleven rock types are discriminated ; 1) oolitic grainstone, 2) algal bioclastic grainstone, 3) fusuline bioclastic grainstone, 4) oolitic packstone, 5) algal bioclastic packstone, 6) fusuline bioclastic packstone, 7) crinoid-bryozoan bioclastic packstone, 8) bioclastic wackestone, 9) mudstone, 10) algal boundstone, 11) limestone-conglomerate. They are distributed to constitute four distinct facies I, II, III and IV : Facies I is characterized by the predominance of oolitic grainstone, Facies II by crinoid-bryozoan bioclastic packstone, Facies III by algal fusuline bioclastic grainstone, and Facies IV by mudstone and wackestone. Facies I and II develop in the Carboniferous ; the former occupies the greater part, while the latter is restricted narrowly. Facies III and IV develop in the Permian; the former occupies the main part and is distributed over southern part, while the latter over northern part. Judging from the distribution of facies mentioned above, the formation of the main part of Nakamura Limestone had originated from the development of oolite shoal under high energy condition on the bank of Visean submarine volcanic mound. A great deal of oolite was spread around and accumlated to form the oolitic grainstone of Facies I in the Carboniferous. On the shallowest part of the mound of the Permian under high energy condition, the algal-fusuline bioclastic grainstone was deposited. Relatively northern part in the Permian, there had been existed lagoon. Compared with Nakamura Limestone herein described, Koyama Limestone at southern part of Oga-Dai may have been formed in a fore-reef environment which is under conditions of open marine circulation.
  • 小林 純, 増本 文吉, 杉原 健
    日本化學雜誌
    1951年 72 巻 6 号 567-570
    発行日: 1951/06/10
    公開日: 2009/02/05
    ジャーナル フリー
  • 寺岡 久之
    陸水学雑誌
    1984年 45 巻 2 号 111-115
    発行日: 1984/04/30
    公開日: 2009/11/13
    ジャーナル フリー
    Concentrations of suspended solids and discharges were measured in the period from 1975 to 1980 in the Takahashi River system (111km long, 2670km2 drainage basin). The sampling site was 10.4 km up the estuary, where the riverbed averages 0.73m above sea level.
    When the flux of suspended solid (g·sec-1) and the discharge (m3·sec-1) were plotted on Y axis and X axis, respectively, the relation Log Y=2.02 Log X-0.83 (n=75, r=0.94) was found. By substituting the regression line for the daily average discharge, the flux of suspended solid (g·day-1) was estimated. When the discharge increased very greatly as a result of heavy rainfall between June 29 and July 1, 1979, its amount (g·hr-1) was estimated by substituting the above regression for the hourly average discharge. Thus, the amount of suspended solids transported during 1979 from river to estuary was estimated at 75×106kg·yr-1 (discharge : 1976×106m3·yr-1), while the amount for the day of June 29 reached 28×106kg·day-1 (or 37% of the total).
    A comparison between the average daily concentrations of elements and their concentrations on the June 29th heavy discharge day was undertaken to fully appreciate the effects of heavy rains.
  • 草地 功, 小林 祥一, 逸見 千代子, 武智 泰史
    鉱物学雜誌
    1999年 28 巻 2 号 41-46
    発行日: 1999/05/31
    公開日: 2010/02/08
    ジャーナル フリー
    Calcium-borate minerals such as takedaite and parasibirskite have been found in a vein in crystalline limestone near gehlenite-spurrite skarns at Fuka, Okayama Prefecture, Japan. The minerals are plotted in the CaO:B2O3 molar ratio range from 1 : 1 to 3 : 1 and up to 0.25 in the B2O3 ratio in the CaO-B2O3-H2O system. This paper reviews the author's studies on physical and chemical properties and genesis of the borate minerals. The properties show the following characteristics with an increase of water content in the minerals: (1) the refractive indices, birefringence, hardness and density of the minerals decrease; (2) the endothermic peaks on the DTA curve shift remarkably at low temperature; (3) the intensity of IR absorption bands near 3400 cm-1 increases, and the band near 1000 cm-1 shifts toward the lower frequency region. The formation of the minerals may be considered as follows: (1) takedaite was primarily formed by a reaction of boron-bearing fluids with limestone; (2) sibirskite and parasibirskite were formed by hydrothermal alteration of takedaite; (3) a late-hydrothermal solution converted sibirskite and parasibirskite to olshanskyite, frolovite and nifontovite.
  • 藤本 睦, 於保 幸正, 平山 恭之
    地質学雑誌
    1994年 100 巻 9 号 709-712
    発行日: 1994/09/15
    公開日: 2008/04/11
    ジャーナル フリー
  • 各河川水力開発の変遷(その8)
    稲松 敏夫
    日本土木史研究発表会論文集
    1989年 9 巻 103-114
    発行日: 1989/06/20
    公開日: 2010/06/15
    ジャーナル フリー
    筆者は先に第1回~ 第7回にわたって、電力土木の変遷と、電力土木に活躍した人々を中心に、各河川の水力開発の変遷について、先ず北陸地方、東北地方、中部地方、関西地方、九州地方、関東地方の各河川の水力開発に活躍した人々について述べたが、今回は中国地方及び四国地方の各河川の水力開発にかつやくした人々を中心に、それぞれの河川の水力開発の変遷について述べ、わが国の電力土木の開発に一生をささげた人々の生きざまをまとめた。
    かねて筆者は、日本の発電所の開発の経緯について建設した人々の努力を発掘して、後世に残す事の必要を痛感し、諸先輩方の口述及び資料を取り纏めて、系統的に人を中心とした日本の電力土木の歴史-各河川の水力開発の変遷の取り纏めに努力して来ているもので、その9、その10には残りの北海道地区の外に、火力、原子力土木、及び送変電土木、並びに海外電力土木開発の変遷を取纏め、最終的には、日本の電力土木開発に一生を捧げた多くの人々の中の代表的人物、10数名についての偉業について取纏めて、完結したいと考えている。
  • (1) ゲーレン石およびハイドログロッシュラー
    逸見 吉之助, 草地 功, 沼野 忠之
    鉱物学雜誌
    1971年 10 巻 3 号 160-169
    発行日: 1971/05/25
    公開日: 2009/08/11
    ジャーナル フリー
  • 荻野 芳彦, 佐藤 晃一, 長堀 金造, 三野 徹, 天谷 孝夫, 広瀬 伸
    農業土木学会誌
    1990年 58 巻 8 号 813-819,a1
    発行日: 1990/08/01
    公開日: 2011/08/11
    ジャーナル フリー
    最近完成した笠岡湾干拓は本格的な大規模畑地干拓で, しかも笠岡臨海工業団地造成事業と共同で, 用水も農業, 工業, 上水道と共同で開発する総合多目的干拓であり, 今後の干拓事業の方向性を示すものとして注目されている。ここでは, 大規模畑地干拓のための除塩を中心とする潅漑・営農計画の基礎となる海成粘土 (ヘドロ) の物理・化学的性質の解明から, 除塩潅漑・土層改良の基礎理論およびそれに基づく諸計画の実施状況を紹介した。また, 本事業は地域の畑作畜産農業の拠点としての意義とともに, 産業構造, 都市生活環境の改善に大きな役割を果たす総合的多目的事業であることを, 都市基盤, 道路・港湾整備, 観光レクリエーション開発等について, 新たな視点から検討し紹介した。
  • 人文地理
    1950年 2 巻 2 号 42-59
    発行日: 1950/04/30
    公開日: 2009/04/28
    ジャーナル フリー
  • 三野 與吉
    地理学評論
    1933年 9 巻 8 号 649-674
    発行日: 1933/08/01
    公開日: 2008/12/24
    ジャーナル フリー
    In an earlier paper the author described his quantative studies of the crustal movements, and the crustal deformations of the same district. But in doing so he had to make the following assumptions:
    a) This district wa eroded to a peneplain during older. Tertiary (pre-miocene); an assumption held by many geologists, although it had not been determined geomorphologically or geographically, that is to say the distribution, both horizontal and vertical.
    b) The miocene deposits which are scattered here and there, on the summit of the hills and at the bottom of the valleys of this district, had covered much wider area at that time than it does today.
    c) The peneplain., or eroded surface, , developed during a late stage in the geographical cycle and had truncated in much the same way the tops of the surfaces of the. miocene and pre-miocene strata, so that an intersected penepain was developed, that is two peneplains (pre-miocene and post-miocene) had intersected each .other at a small angle. In this paper he attempts to prove these assumptions, the method being as follows :
    I. He has drawn. a “Gipfelflur” map (Fig. 1) by the method of closed contour curves on morphological maps (scale 1:50000; contour interval 20m ), publshed by the Imperial Japanese Military Land Survey.
    Fig. I shows many long ranges of mountain summits in a direction NW-ES, together with another range in a EN-SW direction.
    II. He has classified the flat plains in Fig. I into I, II, and III, from the lower, to the higher.
    Flat plains I are distributed mainly in the south and the north-west parts of the district, the former being the Ihara-Hutyû, and the latter- the Syôhara flat plain.
    Flat plains II are distributed in the socalled up-lifted Tyûgoku peneplain, the altitude of the northern parts being about 600m, and that of the southern about 450m. The southern extremities, which assume. a zig-zag form, spread out into the flat plain II, while the northern, which assume the same shape as the southern., penetrate under flatplain III. For example, the region of the upper course of the Tôzyô river (flat plain II), about 7.km in width and rokm in length, penetrates flat plain III of Mt. Iiyama, and Mt. Sirataki in the west, and Mt. Ogamesituzi in the east.
    Flat plain III, which is distributed chiefly in the northern part, is shaped like a peninsula. The parts which are distributed from the center to the southern end of the district have the shape of an island. The altitude increases from 750m.
    III. He. drew another “die Gipfelflur” (Fig. 4), in which he adopted a closed curve as before, but in this, he joined together greater distances (about 3 km) than those shown in Fig. I, then classified flat plain Fig. 5, from Fig. 4. This classified figure largely resembles Fig. 2.
    IV. In order to test the correctness of the classification of the flat plains as well as to ascertain their general altitudes and also the ratio of height deviation, the author drew parallel lines, spaced I km apart, and after obtaining the frequency polygon of every closed. curve in each of these spaces, or sections, divided those of 20m and 40m into class I and those of 60m and 80m into class II. To smooth the frequency polygons of the same class, he averaged the same frequency polygons in every three adjoining sections, the result being Fig. 6 (note the row of polygons).
    By selecting a geomorphological region as a unit, Baulig(2)drew frequency polygons of closed curves for the Paris Basin and Brittany. They do not however indicate clearly the. distribution and the relations of each flat plain to one another in a region.
    To interpret -the frequency polygons in Fig. 6, it is necessary to assume the following fcr this region.
  • 日本水産学会誌
    2013年 79 巻 5 号 927-929
    発行日: 2013年
    公開日: 2013/09/17
    ジャーナル フリー
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