JP6393893B1 - Acting waterway - Google Patents

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JP6393893B1
JP6393893B1 JP2018055914A JP2018055914A JP6393893B1 JP 6393893 B1 JP6393893 B1 JP 6393893B1 JP 2018055914 A JP2018055914 A JP 2018055914A JP 2018055914 A JP2018055914 A JP 2018055914A JP 6393893 B1 JP6393893 B1 JP 6393893B1
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water
curtain
waterway
water channel
girder
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義英 土橋
義英 土橋
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義英 土橋
義英 土橋
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

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Abstract

【課題】本発明は、水路の流出口を流入口より狭くすることで水流の速度を速めた際に生じる水圧に、より耐えうる構造の幕式水路を提供するものである。
【解決手段】水底より起立する複数の柱と幕からなる壁をハの字型に配置することで水流の流出口が流入口より狭い水路を作り、水路の両壁に桁を設け、桁の間に幕を張ることを特徴とする。
【選択図】図１The present invention provides a curtain type waterway having a structure capable of withstanding the water pressure generated when the speed of the water flow is increased by narrowing the outlet of the water channel from the inlet.
SOLUTION: A wall composed of a plurality of pillars and curtains standing from the bottom of the water is arranged in a square shape so that the outlet of the water flow is narrower than the inlet, and a girder is provided on both walls of the water channel. It is characterized by a curtain in between.
[Selection] Figure 1

Description

本発明は、水路の流出口を流入口より狭くすることで水流の速度を速めた際に生じる水圧に、より耐えうる構造の幕式水路に関するものである。   The present invention relates to a curtain-type waterway having a structure that can withstand the water pressure generated when the speed of the water flow is increased by narrowing the outlet of the water channel from the inlet.

従来の幕式水路は水路を形成する壁の、柱と柱の間にのみ幕が張られている物であった。   The conventional curtain-type waterway is a wall with a curtain only between the pillars of the walls forming the waterway.

特許第６１４３３１５号Japanese Patent No. 6143315 特許第６１５０４１１号Patent No. 6150411 特許第６１７２８３０号Japanese Patent No. 6172830 特許第６２４２０３３号Patent No. 6242033 特許第６２５７１２０号Patent No. 6257120

本発明は、水路の流出口を流入口より狭くすることで生じる水圧による強度などの問題を、解決するための幕式水路を提供するものである。   The present invention provides a curtain-type water channel for solving problems such as strength caused by water pressure caused by narrowing the water channel outlet from the inlet.

上記目的を達成するために、幕式水路において請求項１に係るものは、水底より起立する複数以上の柱を桁で連結、および、柱の間に幕を張ることで壁を形成する。そして、その壁を２列設けることで水路を作るが、その水路は水流の流出口を流入口より狭くしたものである。そして、水路内において対面する桁同士の間に幕を設けたものである。 In order to achieve the above object, according to the first aspect of the curtain-type water channel, a wall is formed by connecting a plurality of pillars standing up from the bottom with a girder and extending a curtain between the pillars. Then, a water channel is made by providing two rows of the walls, and the water channel has a water flow outlet made narrower than the flow inlet. A curtain is provided between the beams facing each other in the water channel.

請求項２に係るものは、請求項１に係るものにおいて、桁が水平に設置されていないものである。   A second aspect of the present invention is the one according to the first aspect, wherein the girders are not installed horizontally.

請求項３に係るものは、請求項１に係るものにおいて、柱の複数以上の箇所に桁を設け、対面する水路の各桁との間に幕を設けたものである。   According to a third aspect of the present invention, in the first aspect, a girder is provided at a plurality of positions of the pillar, and a curtain is provided between each girder of the facing water channel.

請求項４に係るものは、請求項３に係るものにおいて、柱に浮体を設け、浮体の浮力により水路を浮かせたものである。   According to a fourth aspect of the present invention is the one according to the third aspect, wherein the column is provided with a floating body and the water channel is floated by the buoyancy of the floating body.

本発明は、以上説明したように構成されており、以下に記載されるような効果を有する。 請求項１に係る仕組みを用いた場合、桁の間に設けられた幕によって従来の幕式水路より強度を高くすることができる。特許文献１の幕式水路および特許文献３を用いた幕式水路は、増速された水流の水圧に対して、柱に設けられたケーブルによって耐えるものであった。本発明は桁の間に設けられた幕によって増速された水流の水圧に耐えるものであり、ケーブルという点への荷重から、幕による線への荷重分散により構造的強度を上げることができる。ただし本発明はケーブルの使用を否定するものではない。少なくとも幕の端にはケーブル備えておいた方が幕の強度は上がる。また、特許文献１で述べられている柱間のケーブルの設置を併用しても構わないし、部分的に特許文献１や特許文献３を用いてもよい。例えば水圧の低い流入口部分では特許文献３を用い、水圧が高くなってくる流出口近くで特許文献１を用い、流出口直前で最も水圧が高くなる部分に本発明を用いるなどである。水路の幅が数百ｍもある状態では水路間に幕を張るのは極めて困難であるが、水路の幅が数十ｍ程度であれば、困難のレベルはずっと下がる。また、水圧に対応するために水路の対面の柱同士にケーブルではなく桁を用いても構わない。   The present invention is configured as described above and has the effects described below. When the mechanism according to claim 1 is used, the curtain provided between the girders can increase the strength compared to the conventional curtain-type water channel. The curtain-type waterway of Patent Document 1 and the curtain-type waterway using Patent Document 3 were able to withstand the water pressure of the accelerated water flow by a cable provided on the column. The present invention can withstand the water pressure of the water flow increased by the curtain provided between the girders, and the structural strength can be increased by the load distribution on the line by the curtain from the load on the cable. However, the present invention does not deny the use of cables. The strength of the curtain will increase if a cable is provided at least at the end of the curtain. Moreover, you may use together the installation of the cable between the columns described in patent document 1, and you may use patent document 1 and patent document 3 partially. For example, Patent Document 3 is used for the inlet portion where the water pressure is low, Patent Document 1 is used near the outlet where the water pressure increases, and the present invention is used for the portion where the water pressure is highest immediately before the outlet. In the state where the width of the water channel is several hundred meters, it is extremely difficult to put a curtain between the water channels, but if the width of the water channel is about several tens of meters, the level of difficulty will be much lower. Moreover, in order to respond | correspond to a water pressure, you may use a girder instead of a cable between the columns of the water channel facing each other.

その他、太いケーブルを数多く設けるよりも、薄い膜を張った方が、水流の乱れは少なくなる。これは水路の先に発電機を設置する場合、発電力が上がることが期待できる。   In addition, the disturbance of the water flow is less when the thin film is stretched than when many thick cables are provided. This can be expected to increase power generation when a generator is installed at the end of the waterway.

請求項２に係る仕組みを用いた場合、請求項１に係る仕組みを用いた場合に加え、より水路による水流の増速具合を上げることができる。特許文献１の幕式水路および特許文献３を用いた幕式水路は、水路の横幅を狭めることで水流を増速させたが、本発明では縦方向の高さを桁と幕を用いて狭めることでさらに水路の水流を増速させることができる。幕の傾斜方向はどちらでもよい。仮に水路間に設けられた幕が１枚だったとした場合、水流の流入口側から見て、水面方向から水底方向に向かって幕を下に傾斜させれば、水路の水底側の流速が早まり、水流の流入口側から見て水低方向から水面方向に向かって幕を上に傾斜させれば、水路の水面側の流速が早まる。ただし、現実問題として水深が深くなれば水圧がより大きくかかるので、発電機の羽根を設置することを考えれば、水路の水面側の流速を増速させた方がよい。さらに水底が水流で削られなくすることもできるので、特許文献１や特許文献３で設けられているような接地板が不要になる。   When the mechanism according to claim 2 is used, in addition to the case where the mechanism according to claim 1 is used, it is possible to increase the speed of water flow through the water channel. The curtain-type waterway of Patent Document 1 and the curtain-type waterway using Patent Document 3 increased the water flow by narrowing the width of the waterway, but in the present invention, the height in the vertical direction is narrowed using a girder and curtain. Thus, the water flow in the waterway can be further increased. The curtain can be tilted in either direction. If there is only one curtain provided between the waterways, the flow velocity on the bottom side of the waterway will be accelerated if the curtain is inclined downward from the water surface direction toward the bottom of the water stream as seen from the water flow inlet side. If the curtain is inclined upward from the low water direction to the water surface direction when viewed from the water flow inlet side, the flow velocity on the water surface side of the waterway is increased. However, as the actual problem, the water pressure increases as the water depth increases, so it is better to increase the flow velocity on the water surface side of the waterway in consideration of installing the blades of the generator. Furthermore, since the bottom of the water can be prevented from being shaved by a water flow, a ground plate as provided in Patent Document 1 or Patent Document 3 is not required.

請求項３に係る仕組みを用いた場合、請求項１に係る仕組みを用いた場合に加え、さらに強度を上げることができ、なおかつ、水路内の水面の上昇を押さえることができる。   When the mechanism according to claim 3 is used, in addition to the case where the mechanism according to claim 1 is used, the strength can be further increased, and the rise of the water surface in the water channel can be suppressed.

水路の流出口を流入口より狭くした場合、水路の流出口の幅が水路の高さに比べて十分大きい場合は大気圧によって水路内の水面の上昇を押さえることができるが、水路の流出口の幅が水路の高さに比べて小さくなりすぎると大気圧だけでは抑えることが出来ず、水路内の水面は水路外より高くなってしまう。水面が高くなるということは、その分、柱を高くしなければならないということだけではない。水路外側に支えとなる水がないので、水路を構成する柱や幕などに、さらなる強度が必要になりコストが高くなってしまう。   If the outlet of the waterway is narrower than the inlet, if the width of the outlet of the waterway is sufficiently large compared to the height of the waterway, the rise of the water surface in the waterway can be suppressed by atmospheric pressure, but the outlet of the waterway If the width of the water channel becomes too small compared to the height of the water channel, it cannot be suppressed only by the atmospheric pressure, and the water level in the water channel becomes higher than the outside of the water channel. The fact that the water level rises is not only that the pillars have to be raised accordingly. Since there is no supporting water on the outside of the water channel, further strength is required for pillars and curtains constituting the water channel, resulting in an increase in cost.

柱の複数以上の箇所に桁を設け、対面する水路の各桁との間に幕を設けることで水路内に上下左右を幕で覆われた空間ができあがる。そうすると、水流はその空間を流れることになるので、水路内の水面の上昇を押さえることができる。また、水流が水底面を削るのを防ぐこともできる。また、最上段に張る幕は干潮になった時でも水面に出ないようにしておくと、幕の空間内の水流はほぼ一定となる。そして、最上段の幕より上の部分の壁の幕は不要となり、台風などの強風に対する必要強度が大幅に小さくて済むようになる。   By providing girders at a plurality of places on the pillar and providing curtains between each girder of the facing waterway, a space covered with curtains on the top, bottom, left and right is created in the waterway. If it does so, since a water flow will flow through the space, the rise of the water surface in a water channel can be suppressed. It is also possible to prevent the water flow from scraping the bottom of the water. Also, if the curtain on the top is kept out of the water surface even at low tide, the water flow in the curtain space will be almost constant. Further, the wall curtain above the uppermost curtain is unnecessary, and the required strength against strong winds such as typhoons can be greatly reduced.

流体の流速が２倍になれば流速の持つエネルギーは流速の３乗の８倍になるので、本発明を発電に用いる場合、水流を早くするために水路の流出口は出来る限り狭くしたい。なぜなら狭くすることによって発電機の羽根が小さくて済むからである。プロペラ型の場合は羽根を回転軸の一点で支えるという構造上の問題から流速が秒速２ｍを超えると厳しくなってくるが、特許文献２の抗力型発電機の場合、羽根の端をケーブルで連結する構造上、強度は極めて高く、秒速２ｍをはるかに超える流速でも運用が可能と思われる。また、プロペラ型は羽根の径が２分の１になれば回転力は１０分の１になるので径を小さくすることは一概によいと言えない。しかし抗力型の回転力は面積に比例するので、水路の幅が２分の１、羽根の面積も２分の１、水流の速度は２倍になった場合に、流速の３乗の８倍を２で割った値である４倍の回転力を得ることが出来る。その点でも本発明において水路の先に設置する発電機は抗力型の方が適していると思われる。   When the fluid flow velocity is doubled, the energy of the flow velocity is eight times the cube of the flow velocity. Therefore, when the present invention is used for power generation, the outlet of the water channel should be as narrow as possible in order to speed up the water flow. This is because the blades of the generator can be made smaller by making it narrower. In the case of the propeller type, the flow rate exceeds 2 m per second because of the structural problem of supporting the blade at one point of the rotating shaft. In the case of the drag generator of Patent Document 2, the end of the blade is connected with a cable. Because of its structure, the strength is extremely high, and it seems that it can be operated even at a flow rate far exceeding 2 m / s. Further, in the case of the propeller type, if the blade diameter is halved, the rotational force becomes 1/10. Therefore, it cannot be said that it is generally good to reduce the diameter. However, since the drag force of the drag type is proportional to the area, when the width of the water channel is halved, the area of the blade is also halved, and the water flow velocity is doubled, it is 8 times the cube of the flow velocity. 4 times the rotational force that is a value obtained by dividing by 2 can be obtained. From this point of view, it is considered that a drag type generator is more suitable for the generator installed at the end of the water channel in the present invention.

請求項４に係る仕組みを用いた場合、請求項３に係る仕組みを用いた場合に加え、深度が深い海中においても本発明を用いることができる。特許文献１の幕式水路および特許文献３を用いた幕式水路は、水底から柱を起立させるため、海に設置する場合、水深が５０ｍに届くようになれば、採算が合わなくなるものと思われる。そこで、柱に浮体を設け、水路を水中に浮くようにしておけば、さらに深い深度においても、それほど変わらないコストで水路の設置が可能となる。ただし、水路が流されないようにケーブルで海底に固定する必要があるので、どんな水深でも設置できるものではない。   When the mechanism according to claim 4 is used, in addition to the case where the mechanism according to claim 3 is used, the present invention can also be used in deep sea. The curtain-type waterway of Patent Document 1 and the curtain-type waterway using Patent Document 3 stand up the pillar from the bottom of the water, so when installed in the sea, if the water depth reaches 50m, it will not be profitable It is. Therefore, if a floating body is provided on the pillar and the water channel is floated in the water, it is possible to install the water channel at a much lower cost even at a deeper depth. However, since it is necessary to fix it to the seabed with a cable so that the water channel will not be washed away, it cannot be installed at any depth.

浮体を海面に浮かせると、波の影響や潮の満ち引きに応じて上下に浮動してしまう。水路全体が同じように上下するなら良いが、高波によって部分的に持ち上げられると、負荷が集中してかかった部分から水路が破損する危険性がある。なので、特許文献４の浮力式海中柱で用いられているような浮体を海中で固定する技術などを用いて浮体及び水路を波や潮の満ち引きで影響されない深度まで沈めておくのがよいと思われる。   When a floating body floats on the surface of the sea, it floats up and down depending on the influence of waves and tides. It would be nice if the entire water channel would move up and down in the same way, but if it was lifted partially by high waves, there was a risk of damage to the water channel from the part where the load was concentrated. Therefore, it is better to sink the floating body and water channel to a depth that is not affected by wave or tide fullness, using techniques such as fixing the floating body in the sea as used in the buoyancy type underwater column of Patent Document 4. Seem.

発明を実施するための形態を示す斜視図である。It is a perspective view which shows the form for inventing. 実施例１を示す斜視図である。1 is a perspective view showing Example 1. FIG. 実施例１を示す上面図である。1 is a top view showing Example 1. FIG. 実施例１を示す正面図である。1 is a front view showing Example 1. FIG. 実施例１を示す横面図である。1 is a lateral view showing Example 1. FIG. 実施例２を示す斜視図である。FIG. 6 is a perspective view showing Example 2. 実施例２を示す横面図である。6 is a lateral view showing Example 2. FIG.

本発明を実施するための形態を図１基づいて説明する。水底より起立する４本の柱（２）の列がハの字状に２列配置されている。それぞれの柱（２）の列の上方と下方にそれぞれ桁（５）が設けられており、その柱（２）と桁（５）間に壁用幕（１）が張られている。そして対面する桁（５）同士の間に桁用幕（６）が張られ水路を形成している。最前列の柱（２）には、水流で倒されないように、前方へケーブル（４）が伸ばされ海底に打ち込まれた杭（３）に連結されている。また、水路の側面方向からも柱（２）からケーブル（４）が伸ばされ海底に打ち込まれた杭（３）に連結されているが、側面からの圧力が絶対ないのであれば特に必要ない。なぜならば水路は水流の流入口が流出口より広いので基本的に水路内側からの圧力の方が強くなるからである。柱（２）の数は最低限の構成を示すものであり状況に応じて設置すればよい。   An embodiment for carrying out the present invention will be described with reference to FIG. Two rows of four pillars (2) standing from the bottom of the water are arranged in a square shape. Girder (5) is provided above and below each column (2), and a wall curtain (1) is stretched between the column (2) and girder (5). A girder curtain (6) is stretched between the facing girders (5) to form a water channel. The frontmost column (2) is connected to a pile (3) that is extended forward and driven into the seabed so that the column (2) does not fall over due to water flow. Moreover, although the cable (4) is extended from the pillar (2) also from the side surface direction of the water channel and connected to the pile (3) driven into the seabed, it is not particularly necessary if there is absolutely no pressure from the side surface. This is because the water channel has a wider water inlet than the water outlet, so the pressure from the inside of the water channel is basically stronger. The number of pillars (2) indicates the minimum configuration and may be installed according to the situation.

実施例１を図２〜図５を基に説明する。図２は図１の壁用幕（１）およびケーブル（４）と杭（３）を省いた斜視図である。水路下側の桁（５）の取付け位置が、前方は水底面に接しているのに対して後方は柱（２）の３分の１ほど上がった位置に取り付けられている。これによって横方向だけではなく縦方向でも水流の絞り込みができる。また、水底が水流で削られなくなるという利点もある。水底が削られないということは水路からの水流漏れによる発電力の低下や、柱の倒壊の危険性が減るということでもある。   Example 1 will be described with reference to FIGS. FIG. 2 is a perspective view in which the wall curtain (1), the cable (4) and the pile (3) of FIG. 1 are omitted. The attachment position of the girder (5) on the lower side of the water channel is in contact with the bottom of the water at the front, while the rear is attached at a position raised about one third of the pillar (2). This makes it possible to narrow the water flow not only in the horizontal direction but also in the vertical direction. In addition, there is an advantage that the bottom of the water is not shaved by the water flow. The fact that the bottom of the water is not cut also means that the power generation due to water leakage from the waterway is reduced and the risk of collapse of the pillars is reduced.

図３は図２の上面図である。水路を形成する柱（２）の列がハの字状に配列されており、それぞれの列で設けられた桁（５）の間に桁用幕（６）が張られている。また、下側の水流の流入口より上側の流出口が狭くなっている。水路の壁を形成する柱（２）の間隔は流出口に近づくほど狭くなっている。これは高くなる水圧に対応するためである。図では直線状に配置されているが、圧力を受け流すためにカーブ状にしてもよいし、桁（５）および桁用幕（６）を増やしてもよい。また、特許文献１のように柱間をケーブルで連結する技術を併用してもよいし、ケーブルではなく桁を用いてもよい。桁を用いて水路の骨格をラーメン構造にすれば、陸上で組み立ててから水中に沈めることもできる。ただし、水路内の水流に対して直交方向にかかる桁は激しい水流が当たるため、流線型にして極力抵抗がかからないようにする必要がある。   FIG. 3 is a top view of FIG. The columns (2) forming the water channel are arranged in a square shape, and a girder curtain (6) is stretched between the columns (5) provided in each column. Further, the upper outlet is narrower than the lower water inlet. The interval between the columns (2) forming the walls of the water channel becomes narrower as it approaches the outlet. This is to cope with the increasing water pressure. Although it is arranged in a straight line in the figure, it may be curved to receive the pressure, or the girder (5) and girder curtain (6) may be increased. Moreover, the technique which connects between pillars with a cable like patent document 1 may be used together, and not a cable but a girder may be used. If the frame of the waterway is made into a ramen structure using a girder, it can be assembled on land and then submerged. However, because the girder in the direction orthogonal to the water flow in the water channel is subjected to intense water flow, it is necessary to make it streamlined so that resistance is not applied as much as possible.

図４は図２の正面図である。図５は図２の横面図に水面（８）と水底（７）の表示を加えたものである。下側の桁（５）と桁用幕（６）がせり上がっているのに対して上側の桁（５）と桁用幕（６）は水平である。海に設置する場合、上側の桁（５）に張られた桁用幕（６）は干潮時においても海面下にあることが望ましい。なぜならば、水流の流量が変化するばかりではなく、水面上に出た桁用幕（６）が台風などの強風にさらされる危険性があるからである。仮に水路内の水流が秒速２ｍだとした場合、風速に換算すると約秒速２０ｍに相当する。台風は秒速４０ｍを超えることもあり、しかもどの方向からも吹くことを前提としなければならないためである。   FIG. 4 is a front view of FIG. FIG. 5 is obtained by adding the indication of the water surface (8) and the water bottom (7) to the lateral view of FIG. The lower girder (5) and girder curtain (6) are raised, while the upper girder (5) and girder curtain (6) are horizontal. When installed in the sea, the girder curtain (6) stretched on the upper girder (5) is preferably below the sea level even at low tide. This is because not only the flow rate of the water flow changes, but also there is a risk that the girder curtain (6) on the surface of the water is exposed to strong winds such as typhoons. If the water flow in the channel is 2 m / s, this corresponds to about 20 m / s in terms of wind speed. This is because a typhoon may exceed 40 m / s and must be premised on blowing from any direction.

実施例２を図６および図７を基に説明する。柱（２）に浮体（９）を取り付け、海中に浮かせたもので、図１との大きな違いは柱（２）の上部に浮体（９）が取り付けられていることと、柱（２）の下部が下側の桁（５）までの長さしかないことである。浮体（９）により水路全体を浮かすことができ、柱（２）を水底（７）まで伸ばす必要がなくなる。これにより水深が５０ｍを超えるような場所においても、さほど変わらないコストで当発明の水路を設置することが可能になる。   A second embodiment will be described with reference to FIGS. The floating body (9) is attached to the pillar (2) and floated in the sea. The major difference from Fig. 1 is that the floating body (9) is attached to the upper part of the pillar (2) and the pillar (2) The lower part is only the length up to the lower digit (5). The entire water channel can be floated by the floating body (9), and it is not necessary to extend the column (2) to the bottom of the water (7). Thereby, even in a place where the water depth exceeds 50 m, the water channel of the present invention can be installed at a cost that does not change much.

図７は図６の横面図である。水路を形成する各柱（２）からケーブル（４）が伸ばされ、水底（７）の杭（３）に連結されている。また浮体（９）は水面（８）の下に沈んでいる。必要であれば、浮体（９）もケーブル（４）で水底（７）の杭（３）と連結させてよい。   FIG. 7 is a lateral view of FIG. A cable (4) is extended from each pillar (2) forming the water channel and connected to the pile (3) of the water bottom (7). The floating body (9) is sinking under the water surface (8). If necessary, the floating body (9) may also be connected to the pile (3) of the bottom (7) with a cable (4).

１ 壁用幕
２ 柱
３ 杭
４ ケーブル
５ 桁
６ 桁用幕
７ 水底
８ 水面
９ 浮体 1 Wall curtain 2 Pillar 3 Pile 4 Cable 5 Girder 6 Girder curtain 7 Water bottom 8 Water surface 9 Floating body

Claims (4)

水底より起立する複数以上の柱を桁で連結、および、柱の間に幕を張ることで壁を形成し、その壁を２列設けることで水路を作り、水流の流出口を流入口より狭くし、水路の対面する桁同士の間に幕を設けた幕式水路。 A wall is formed by connecting two or more pillars standing from the bottom with a girder, and a curtain is placed between the pillars, and two walls are provided to create a water channel. The outlet of the water stream is narrower than the inlet. A curtain-type waterway with a curtain between the facing girder. 桁が水平に設置されていない請求項１の幕式水路。   The curtain-type waterway of claim 1, wherein the girders are not installed horizontally. 柱の複数以上の箇所に桁を設け、対面する水路の各桁との間に幕を設けた請求項１の幕式水路。   The curtain-type waterway according to claim 1, wherein girders are provided at a plurality of positions of the pillar, and curtains are provided between the columns of the waterways facing each other. 柱に浮体を設け、浮体の浮力により水路を浮かせた請求項３の幕式水路。 The curtain-type waterway according to claim 3, wherein a floating body is provided on the pillar, and the waterway is floated by the buoyancy of the floating body.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07259064A (en) * 1994-12-12 1995-10-09 Atsushi Iwamoto Caisson for ocean current power generation
JPH08260443A (en) * 1995-03-27 1996-10-08 Kiso Kogyo Kk Method of water-channel forming construction and water channel formed by method of construction thereof
JP2016089345A (en) * 2014-10-29 2016-05-23 日立Ｇｅニュークリア・エナジー株式会社 Device for preventing collision of floating wreckage
JP6143315B1 (en) * 2016-08-17 2017-06-07 義英 土橋 Acting waterway
JP6172830B1 (en) * 2017-02-22 2017-08-02 義英 土橋 Acting underwater wall
JP6242033B1 (en) * 2017-07-14 2017-12-06 義英 土橋 Buoyant underwater pillar

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07259064A (en) * 1994-12-12 1995-10-09 Atsushi Iwamoto Caisson for ocean current power generation
JPH08260443A (en) * 1995-03-27 1996-10-08 Kiso Kogyo Kk Method of water-channel forming construction and water channel formed by method of construction thereof
JP2016089345A (en) * 2014-10-29 2016-05-23 日立Ｇｅニュークリア・エナジー株式会社 Device for preventing collision of floating wreckage
JP6143315B1 (en) * 2016-08-17 2017-06-07 義英 土橋 Acting waterway
JP6172830B1 (en) * 2017-02-22 2017-08-02 義英 土橋 Acting underwater wall
JP6242033B1 (en) * 2017-07-14 2017-12-06 義英 土橋 Buoyant underwater pillar

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