JP2018199898A - River structure - Google Patents

River structure Download PDF

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JP2018199898A
JP2018199898A JP2017103657A JP2017103657A JP2018199898A JP 2018199898 A JP2018199898 A JP 2018199898A JP 2017103657 A JP2017103657 A JP 2017103657A JP 2017103657 A JP2017103657 A JP 2017103657A JP 2018199898 A JP2018199898 A JP 2018199898A
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river
stones
stone
dam
water
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JP6503412B2 (en
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毅 塚本
Takeshi Tsukamoto
毅 塚本
努 柴崎
Tsutomu Shibasaki
努 柴崎
勝 澤本
Masaru Sawamoto
勝 澤本
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Sawamoto Co Ltd
TSUKAMOTO KENSETSU KK
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Sawamoto Co Ltd
TSUKAMOTO KENSETSU KK
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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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/60—Ecological corridors or buffer zones

Abstract

To provide a river structure which does not need to provide a fish pass on a lateral side of a dam and in which an apron is hard to be destroyed.SOLUTION: In a river structure, an inclined part is provided on the downstream side of a dam, an apron is provided on the downstream side of the inclined part, and a top surface of the inclined part is formed as a down slope in which a dam side becomes higher and an apron side becomes lower. The inclined part may be constructed by stacking many stones in a stepwise by providing a step so as to be upwardly tilted from the downstream side to the upstream side. A fish pass is positioned on a top part of the inclined part in which stones are stacked. The fish pass has an inclination such that fish can go against stream. The apron may be formed by arranging a parallel-cross assembly on cobble stones installed on a river bed, and by stacking large stones or fixing lower parts of two or more large stones using concrete on the parallel-cross assembly.SELECTED DRAWING: Figure 1

Description

本発明は河川構造、特に、堰堤（堤防）、魚道、水叩き等の構造に関する。   The present invention relates to a river structure, and more particularly to a structure such as a dam (bank), a fishway, and a water hammer.

河川の川上側には、上流からの土石流を抑止或いは抑制するための堰堤Ａが設けられている（図６）。通常、堰堤Ａの下流側には水叩きＢがあり（図６）、堰堤Ａの川幅方向一側方又は両側方には魚遡上用の魚道Ｃがある（図６）。これら堰堤Ａ、水叩きＢ、魚道Ｃ等に関する特許文献も各種ある。主なものとして特許文献１〜１０がある。これらのうち特許文献１は堰堤構造に関するものであり、特許文献２〜４は河床の井桁構造に関するものであり、特許文献５〜１０は魚道構造に関するものである。特許文献３は杉や松の丸太あるいは角材を井桁状に組み上げ、その井桁の中に現地で採取した玉石や栗石を詰めた木工沈床に関するものであり、通常、河床保護のために施工されている。特許文献５〜１０の魚道構造は堰堤を設けることにより魚の遡上が阻止されないようにするものであり、バイオマス等の環境保護の面で重要なことである。   On the river upper side, a dam A is provided for suppressing or suppressing debris flow from the upstream (FIG. 6). Usually, there is a water hitting B on the downstream side of the dam A (FIG. 6), and there is a fishway C for going up the fish on one side or both sides in the river width direction of the dam A (FIG. 6). There are various patent documents relating to these dam A, water hitting B, fishway C and the like. There exist patent documents 1-10 as a main thing. Among these, Patent Document 1 relates to a dam structure, Patent Documents 2 to 4 relate to a riverbed girder structure, and Patent Documents 5 to 10 relate to a fishway structure. Patent Document 3 relates to a wooden subsidence in which cedar and pine logs or timber are assembled in a cross-girder shape and packed with cobblestones and chestnuts collected locally in the cross-girder, and is usually constructed to protect the riverbed. . The fishway structures disclosed in Patent Documents 5 to 10 are designed to prevent the fish from going up by providing a dam and are important in terms of environmental protection of biomass and the like.

特許第３６１１５４０号公報Japanese Patent No. 3611540 特許第４７９４５３７号公報Japanese Patent No. 4794537 特許第２９５１３３０号公報Japanese Patent No. 2951330 特許第３３３５１６８号公報Japanese Patent No. 3335168 特許第３４４８６５９号公報Japanese Patent No. 3448659 特許第５８３７３４２号公報Japanese Patent No. 5837342 特許第３４７５９４５号公報Japanese Patent No. 3475945 特許第４０８７５３６号公報Japanese Patent No. 4087536 特許第４４５７３８４号公報Japanese Patent No. 4457384 実開平６−０８５４２２号公報Japanese Utility Model Publication No. 6-085422

通常、水叩きＢは堰堤Ａの下流側の河床に石（巨石）を敷設して形成してあるが、特許文献１の堰堤構造では、堰堤Ａの上面（天端）Ｄを乗り越えて落下する水流で水叩きＢの石が流されてしまい、河床が露呈し、露呈部分が天端Ｄを乗り越えて落下する水流で抉られてしまい、水叩きＢ本来の機能が損なわれるという難点があった。   Normally, the water hitting B is formed by laying stones (megaliths) on the river bed on the downstream side of the dam A. However, in the dam structure of Patent Document 1, it falls over the upper surface (top end) D of the dam A. The water hitting B stone was washed away by the water flow, the river bed was exposed, the exposed part was beaten by the water flow falling over the top edge D, and the original function of the water hitting B was impaired. .

特許文献１は堰堤構造、特許文献２〜４は井桁構造、特許文献５〜１０は魚道構造に関するものであるため、それらを個別に施工することはできても、それらを総合的に勘案した河川構造を実現することは難しい。   Since Patent Document 1 relates to a dam structure, Patent Documents 2 to 4 relate to a girder structure, and Patent Documents 5 to 10 relate to a fishway structure, even though they can be constructed individually, a river that comprehensively considers them It is difficult to realize the structure.

本発明の課題は、水叩きが崩れにくく、堰堤の側方に魚道を設ける必要のない河川構造を提供する。   An object of the present invention is to provide a river structure in which water hitting is difficult to collapse and a fishway need not be provided on the side of a dam.

本発明の河川構造は、堰堤の下流側に傾斜部を、その下流側に水叩きを備えたものである。傾斜部は、上面が堰堤側から水叩き側に下り傾斜であり、その上面に、石が積み上げられている。石は水叩き側から堰堤側に段差を設けて上り傾斜に積み上げられている（段積みされている）。段積みされた石の高低差（段差）及び石叩き側から堰堤側への上り勾配は魚が遡上できる勾配とし、その石が段積みされた傾斜部の上部を魚道とした。水叩きは河床に敷いた栗石の上に井桁を設置し、井桁の上に巨石を載せて当該巨石の上部が水面の上に突出するようにしたものでもよく、河床或いは河床の上の栗石の上に設置した二以上の石の下部をコンクリートで固定し、当該石の上部が水面の上に突出するようにしたものでもよい。井桁はカラ松、松、アカシアなどの耐水性に優れた木材を縦横に組んで連結して多数の升目が形成された格子状の井桁が適する。堰堤及び水叩きは川幅方向に長い。魚道は傾斜部の上面であって川幅方向の全域或いは一部にある。   The river structure of the present invention is provided with an inclined portion on the downstream side of the dam and a water hammer on the downstream side. The inclined portion is inclined downward from the dam side to the water hitting side, and stones are stacked on the upper surface. Stones are piled up (stacked) with a step from the water hitting side to the dam side. The height difference (step) of the stacked stones and the ascending slope from the stone striking side to the dam side were such that the fish could go up, and the upper part of the inclined part where the stones were stacked was the fishway. The water hitting may be one in which a well is placed on a chestnut stone laid on the river bed and a megalith is placed on the well girder so that the top of the megalith protrudes above the water surface. The lower part of two or more stones installed on the top may be fixed with concrete so that the upper part of the stone protrudes above the water surface. The cross girder is suitable as a grid-like girder in which a number of grids are formed by connecting vertically and horizontally timber with excellent water resistance such as pine, pine, and acacia. The dam and water hammer are long in the river width direction. The fishway is on the upper surface of the slope and in the whole or part of the river width direction.

本発明は次の効果がある。
（１）堰堤とそれより下流側の水叩きの間に、上面が堰堤側から水叩き側に向けて次第に下り傾斜である傾斜部があるので、堰堤の天端を乗り越えて水叩きに流れ落ちる水勢が傾斜部で緩和されて水叩きの上に落下し、水叩きの石が位置ずれしにくくなり、河床が抉られにくくなる。
（２）石が段積みされた傾斜部の上部が魚道であるため、堰堤の横に魚道を設ける必要がない。
（３）水叩きの石を、栗石の上に敷設した井桁の上に載せれば、井桁の上の石が安定し、水叩きが崩れにくくなる。
（４）水叩きの石の下部をコンクリートで固定すれば、水叩きの石が安定し、崩れにくくなる。 The present invention has the following effects.
(1) Since there is an inclined part with the upper surface gradually descending from the dam side to the water hitting side between the weir and the downstream water hitting, the water force that flows over the top of the weir and flows into the water hitting Is relaxed at the slope and falls onto the water hitting, making the water hitting stones less likely to be displaced and the river bed not being beaten.
(2) Since the upper part of the inclined part where the stones are stacked is a fishway, there is no need to provide a fishway next to the dam.
(3) If a water-tapping stone is placed on a well girder laid on chestnut stone, the stone on the well girder will be stable, and the water tapping will not collapse.
(4) If the lower part of the water hitting stone is fixed with concrete, the water hitting stone will be stable and less likely to collapse.

本発明の河川構造の一例であって、水叩きの石の下部をコンクリートで固めた場合の縦断側面図。It is an example of the river structure of this invention, Comprising: The vertical side view when the lower part of the water hitting stone is hardened with concrete. 本発明の河川構造の一例であって、水叩きの石を井桁の上に載せた場合の縦断側面図。It is an example of the river structure of this invention, Comprising: The vertical side view at the time of mounting a water hitting stone on a well girder. 本発明の河川構造の一例であって、堰堤が石を積んで形成された場合の縦断側面図。It is an example of the river structure of this invention, Comprising: The vertical side view in case a dam is piled up and formed. 井桁の一例を示す平面図。The top view which shows an example of a well beam. 井桁の上に石を載せた場合の水叩きの平面図。A plan view of water hammering when a stone is placed on a well beam. 従来の河川構造の一例を示す説明図。Explanatory drawing which shows an example of the conventional river structure.

（河川構造の実施形態）
本発明の河川構造を図面に基づいて説明する。一例として図１〜図３に示すものは、堰堤１と、その下流側の傾斜部２と、傾斜部２の下流側の水叩き３を備えている。堰堤１と傾斜部２は連続している。傾斜部２は栗石やその他の石材を盛り上げて形成されている。傾斜部２の上面４は上流側から下流側に下り傾斜であり、その上面４に石５を下流側の石を低く、上流側の石を高くして（段差を設けて）積んである（段積みしてある）。石５の段差及び水叩き３側から堰堤１側への上り勾配を魚は遡上できる勾配であり、石が段積みされた傾斜部２の上部を魚道６としてある。 (Embodiment of river structure)
The river structure of the present invention will be described with reference to the drawings. As an example, what is shown in FIGS. 1 to 3 includes a dam 1, an inclined portion 2 on the downstream side thereof, and a water hammer 3 on the downstream side of the inclined portion 2. The dam 1 and the inclined portion 2 are continuous. The inclined portion 2 is formed by raising chestnuts and other stone materials. The upper surface 4 of the inclined portion 2 is inclined downward from the upstream side to the downstream side, and the stone 5 is stacked on the upper surface 4 with the downstream stones being low and the upstream stones being high (providing a step). Are stacked). The fish can move up the step of the stone 5 and the upward slope from the water hitting 3 side to the dam 1 side, and the upper part of the inclined portion 2 where the stones are stacked is a fishway 6.

［堰堤１］
図１、図２の堰堤１は既存の堰堤と同様の機能、目的のものであり、川幅方向に細長に設けられている。河川を横断する場合もあり横断しない場合もある。図１、図２の堰堤１はコンクリート製である。その形状は側面視、縦長であるが、他の形状、例えば、下流側が裾広がりであってもよい。 [Weir 1]
The dam 1 shown in FIGS. 1 and 2 has the same function and purpose as the existing dam, and is provided in an elongated shape in the river width direction. It may or may not cross rivers. The dam 1 in FIGS. 1 and 2 is made of concrete. The shape is vertically long when viewed from the side, but other shapes, for example, the bottom side may be widened.

［堰堤２］
図３の堰堤１は石７を積み上げて形成したものであり、特許文献１に記載の堰堤である。川の上流側と下流側に間隔をあけて石７を積層し、上流側の石７ａと、下流側の石７ｂが対向配置されて積み上げられ、両側の石７ａ、７ｂを内側下方に向けて斜めに積み上げ、両石７ａ、７ｂの間に栗石８を中込めしてある。 [Weir 2]
The dam 1 in FIG. 3 is formed by stacking stones 7 and is a dam described in Patent Document 1. Stones 7 are stacked on the upstream and downstream sides of the river, and the upstream stones 7a and the downstream stones 7b are stacked facing each other, with the stones 7a and 7b on both sides facing downward inward. It is piled up diagonally, and Kuriishi 8 is inserted between both stones 7a and 7b.

［傾斜部］
図１〜図３の傾斜部２は堰堤１と水叩き３の間に設けられている。傾斜部２は堰堤１の横幅方向全域（略全域を含む）或いは一部に設けてある。傾斜部２の上面４は堰堤１側から水叩き３側に向けて下り傾斜である。傾斜部２は栗石、その他の石材２ａ（以下「栗石等」という）を積み上げて形成されている。傾斜部２の下り傾斜の上面４には、下流側（水叩き側）から上端側（堰堤側）に多数の石５を段差を設けて段積みしてある。この場合、傾斜部２の最下段には力石（支持石）９を縦長に設置し、力石９の下部９ａを栗石等２ａに埋設固定し、力石９の上部９ｂを傾斜部２の上面４の上に突出させてある。力石９よりも上流側に段積み用の石５を積み上げてある。石５は傾斜部２の上面４の傾斜に沿って下方から上方に高くなる段差で階段状に積み上げて（段積みして）ある。石５が段積みされた傾斜部２の上部（石５の横（間）及び上）を魚道６としてある。魚道６は魚が遡上できる勾配にしてある。傾斜部２の上端部２ｂは、堰堤１の天端部１ａと同じ（ほぼ同じ）又はそれより多少低くして、堰堤１を乗り越えた水が流下し易くなるようにしてある。図２では力石９を下流側から上流側に二段設けてあるが、三段以上であってもよい。 [Inclined part]
The inclined portion 2 in FIGS. 1 to 3 is provided between the dam 1 and the water hammer 3. The inclined portion 2 is provided in the entire width direction (including substantially the entire region) or a part of the dam 1. The upper surface 4 of the inclined portion 2 is inclined downward from the dam 1 side toward the water hitting 3 side. The inclined portion 2 is formed by stacking chestnut stone and other stone materials 2a (hereinafter referred to as “kuriishi etc.”). On the downwardly inclined upper surface 4 of the inclined portion 2, a number of stones 5 are stepped and stacked from the downstream side (water hitting side) to the upper end side (dam side). In this case, a rock stone (support stone) 9 is installed vertically at the bottom of the inclined portion 2, a lower portion 9 a of the force stone 9 is embedded and fixed in chestnut stone 2 a, and the upper portion 9 b of the force stone 9 is attached to the upper surface 4 of the inclined portion 2. It protrudes upward. Stacking stones 5 are stacked upstream of the force stones 9. The stones 5 are stacked (stacked) in a stepped manner along the slope of the upper surface 4 of the inclined portion 2 with a step height increasing from below to above. The upper part of the inclined part 2 where the stones 5 are stacked (the side (between and above) the stones 5) is a fishway 6. The fishway 6 has a slope that allows fish to run up. The upper end portion 2b of the inclined portion 2 is the same (substantially the same) as the top end portion 1a of the dam 1 or slightly lower than that so that the water over the dam 1 can easily flow down. In FIG. 2, the calculus 9 is provided in two stages from the downstream side to the upstream side, but may be three or more stages.

段積みした石５はその下部５ａを傾斜部２の上面４に埋設し、石５の上部５ｂを傾斜部２の上面４より上方に突出させてある。石５には各種形状、サイズの天然石を使用可能ある。施工する河川（現場付近）から採取した石を使用すると工事現場への搬入の手間がかからず、工事の迅速化も可能となる。石５として、一例として、縦長寸法１．５ｍの石を使用した場合、傾斜部２の上面４から上方への突出寸法は５０〜７０ｃｍ程度が適する。上段の石５と下段の石５の突出差（段差）は魚が遡上できる程度の段差、勾配にしてある。段差は例えば３０ｃｍ〜７０ｃｍとすることができる。魚道６は傾斜部２の上面４の横幅方向全域或いは一部の領域に設けることができる。   The stacked stone 5 has a lower portion 5 a embedded in the upper surface 4 of the inclined portion 2 and an upper portion 5 b of the stone 5 protruding above the upper surface 4 of the inclined portion 2. Natural stones of various shapes and sizes can be used for the stone 5. If stones collected from the river (near the site) are used, it will not take time to carry it to the construction site and it will be possible to speed up the construction. As an example, when a stone having a vertically long dimension of 1.5 m is used as the stone 5, the upward projecting dimension from the upper surface 4 of the inclined portion 2 is preferably about 50 to 70 cm. The protrusion difference (step) between the upper stone 5 and the lower stone 5 is a level difference and a gradient that allow fish to run up. The step can be 30 cm to 70 cm, for example. The fishway 6 can be provided in the entire lateral width direction or a partial region of the upper surface 4 of the inclined portion 2.

［水叩き］
水叩き３は既存の水叩きと同様の機能、目的のものであり、傾斜部２の下流側に傾斜部２の下端よりも一段低く設けられている。水叩き３の構造は各種あるが、図２に示すものは河床１０に敷いた栗石、その他の石材３ａ（以下「栗石等」という）の上に井桁１１を設置し、井桁１１の上に石（水叩き用の巨石）１２を載せて固定してある。使用可能な石１２のサイズ、重さ等は特に限定されないが、少なくとも、井桁１１を安定させることのできる程度のサイズ、重さの巨石が適する。通常、巨石は縦横寸法８０ｃｍ以上、重さ数ｔのものである。河川の水位が通常の場合、水叩き３用の石（巨石）１２の上部１２ｂは水面の上に突出するようにしてある。 [Water hit]
The water hitting 3 has the same function and purpose as the existing water hitting, and is provided on the downstream side of the inclined portion 2 one step lower than the lower end of the inclined portion 2. There are various structures of the water hitting 3, but the structure shown in FIG. 2 is that a girder 11 is set on a chestnut stone and other stone materials 3 a (hereinafter referred to as “Kuriishi etc.”) laid on the riverbed 10, (Huge stone for water hitting) 12 is placed and fixed. The size, weight and the like of the stone 12 that can be used are not particularly limited, but at least a megalith having a size and weight that can stabilize the well 11 is suitable. Usually, megaliths have a vertical and horizontal dimension of 80 cm or more and a weight of t. When the water level of the river is normal, the upper part 12b of the stone (megalith) 12 for water hitting 3 projects above the water surface.

井桁１１はカラ松、松、アカシアなどの耐水性に優れた木材１３を、図４、図５に示すように縦横に連結して多数の升目１４が形成された格子状の井桁が適する。各升目１４の縦横サイズ（升目サイズ）は任意に設計できるが、例えば、その上を重機が走行できる程度のサイズ、例えば２ｍ角程度とすることができる。井桁１１は河床１０の上に積み上げた栗石等３ａの上に埋め込み、その上から水叩き用の石１２を載せることもできる。木材１３の連結はボルト締めが適する。   The cross girder 11 is suitably a grid-shaped girder in which a large number of grids 14 are formed by connecting woods 13 having excellent water resistance such as pine, pine, and acacia vertically and horizontally as shown in FIGS. The vertical and horizontal sizes (mesh size) of each cell 14 can be designed arbitrarily, but for example, it can be set to a size that allows heavy machinery to travel on it, for example, about 2 m square. The well girder 11 can be embedded on a chestnut or the like 3a stacked on the river bed 10 and a water tapping stone 12 can be placed thereon. Bolts are suitable for connecting the wood 13.

図１、図３に示す水叩き３は、水叩き用の石１２の下部１２ａをコンクリート１５で固定して河床１０に固定し、その石１２の上部１２ｂが水面の上に突出しているものである。ここで使用可能な水叩き用の石１２のサイズ、重さ等も特に限定されないが、少なくとも、傾斜部２から流れ落ちてくる水の勢いで押し流されたり、移動したりしない程度のサイズ、重さのものが適する。図１、図３では、傾斜部２の力石９のすぐ下にも力石（支持石）９を設けてある。水叩き３は河床１０の上に栗石等３ａを敷き、その上に石１２を設置し、その石１２の下部をコンクリートで固定することもできる。   The water tapping 3 shown in FIGS. 1 and 3 is such that the lower portion 12a of the water tapping stone 12 is fixed to the river bed 10 with the concrete 15 and the upper portion 12b of the stone 12 protrudes above the water surface. is there. The size and weight of the water tapping stone 12 that can be used here are not particularly limited, but at least the size and weight of the water tapping stone 12 that is not swept away or moved by the water flowing down from the inclined portion 2. Is suitable. In FIGS. 1 and 3, a force stone (support stone) 9 is provided just below the force stone 9 of the inclined portion 2. The water hitting 3 can be constructed by placing a chestnut stone 3a on the riverbed 10, placing a stone 12 thereon, and fixing the lower portion of the stone 12 with concrete.

傾斜部２から水叩き３に流れ落ちた水は図１〜図３の矢印Ａのように、水叩き３の下流に流れ落ちるものと、矢印Ｂのように水叩き３の下に流れ込むものがある。矢印Ｂの流れは津波の引き波と同様の現象で流れ込むものもある。水叩き３はその下に流れ込んだ水（矢印Ｂ）の水勢で傾斜部２（上流側）に引き寄せられて、傾斜部２から下流側に離れにくくなる。むしろ、傾斜部２に引き寄せられる。   The water that has flowed down from the inclined portion 2 to the water hitting 3 includes those that flow downstream of the water hitting 3 as indicated by an arrow A in FIGS. 1 to 3 and those that flow below the water hitting 3 as indicated by an arrow B. The flow of arrow B flows in the same phenomenon as the tsunami pulling wave. The water hitting 3 is attracted to the inclined portion 2 (upstream side) by the water flow of the water (arrow B) flowing below it, and is difficult to separate from the inclined portion 2 to the downstream side. Rather, it is drawn to the inclined portion 2.

１ 堰堤
１ａ （堰堤の）天端部
２ 傾斜部
２ａ （傾斜部の）栗石、その他の石材（栗石等）
２ｂ （傾斜部の）上端部
３ 水叩き
３ａ （水叩きの）栗石、その他の石材（栗石等）
４ （傾斜部の）上面
５ （傾斜部の）石
５ａ 石の下部
５ｂ 石の上部
６ 魚道
７ （堰堤の）石
７ａ 上流側の石
７ｂ 下流側の石
８ （堰堤の）栗石
９ 力石
９ａ 力石の下部
９ｂ 力石の上部
１０ 河床
１１ 井桁
１２ （水叩き用の）石
１２ａ （水叩き用の）石の下部
１２ｂ （水叩き用の）石の上部
１３ 木材
１４ （井桁の）升目
１５ コンクリート
Ａ 堰堤
Ｂ 水叩き
Ｃ 魚道
Ｄ 堰堤の上面（天端） 1 Weir 1a Top end (of the weir) 2 Slope 2a Kuriishi (of the slope), other stones (Kuriishi, etc.)
2b (Upper part of the slope) 3 Water hammering 3a (Water hammering) Kuriishi, other stones (Kuriishi, etc.)
4 Upper surface (of inclined part) 5 (Inclined part) stone 5a Lower part of stone 5b Upper part of stone 6 Fishway 7 Stone (of dam) 7a Stone on the upstream side 7b Stone on the downstream side 8 Chestnut stone (of the dam) 9 Rock stone 9a Rock stone Lower part 9b Upper part of force stone 10 River bed 11 Well beam 12 Stone (for water hammering) 12a Lower part of stone (for water hammering) 12b Upper part of stone (for water hammering) 13 Wood 14 (For well beam) Grid 15 Concrete A Weir B Water hammering C Fishway D Upper surface of the dam (top)

Claims (6)

堰堤と水叩きを備えた河川構造において、
堰堤の下流側に傾斜部があり、傾斜部の下流側に水叩きがあり、
堰堤は河川の横幅方向に細長であり、
傾斜部の上面は堰堤側が高く水叩き側が低い下り斜面であり、
傾斜部の上面に多数の石が上下に段差を設けて段積みされている、
ことを特徴とする河川構造。 In river structures with weirs and water hammers,
There is an inclined part on the downstream side of the dam, and there is a water hammer on the downstream side of the inclined part,
The dam is elongated in the width direction of the river,
The upper surface of the slope is a down slope with a high weir side and a low water hitting side,
A large number of stones are stacked on the upper surface of the inclined part with steps above and below,
River structure characterized by that. 堰堤と水叩きを備えた河川構造において、
堰堤の下流側に傾斜部があり、傾斜部の下流側に水叩きがあり、
堰堤は河川の横幅方向に細長であり、
堰堤は川の上流側と下流側に間隔をあけて石を積層し、上流側の石と、下流側の石が対向配置されて積み上げられ、両側の石を内側下方に向けて斜めに積み上げ、両石の間に栗石を中込めしたものであり、
傾斜部の上面は堰堤側が高く水叩き側が低い下り斜面であり、
傾斜部の上面に多数の石が上下に段差を設けて段積みされている、
ことを特徴とする河川構造。 In river structures with weirs and water hammers,
There is an inclined part on the downstream side of the dam, and there is a water hammer on the downstream side of the inclined part,
The dam is elongated in the width direction of the river,
The dam is piled up with stones on the upstream and downstream sides of the river, the upstream stones and the downstream stones are stacked facing each other, and the stones on both sides are piled diagonally downwards inside, It has a chestnut stone between the two stones,
The upper surface of the slope is a down slope with a high weir side and a low water hitting side,
A large number of stones are stacked on the upper surface of the inclined part with steps above and below,
River structure characterized by that. 請求項１又は請求項２記載の河川構造において、
石が段積みされた傾斜部の上部が魚道であり、魚道は魚が遡上できる勾配である、
ことを特徴とする河川構造。 In the river structure according to claim 1 or claim 2,
The upper part of the slope where the stones are stacked is the fishway, and the fishway is a slope that allows the fish to go up and down.
River structure characterized by that. 請求項１から請求項３のいずれか１項に記載の河川構造において、
傾斜部の下段又はその下段及び水叩きの上流側に力石があり、その力石の上流側に石が段積みされている、
ことを特徴とする河川構造。 In the river structure according to any one of claims 1 to 3,
There is a stone in the lower part of the inclined part or the lower part and the upstream side of the water hitting, and stones are stacked on the upstream side of the stone.
River structure characterized by that. 請求項１から請求項４のいずれか１項に記載の河川構造において、
水叩きが、河床又は河床の上の栗石の上に井桁を設置し、井桁の上に石を載せたものである、
ことを特徴とする河川構造。 In the river structure according to any one of claims 1 to 4,
Water hitting is a river bed or a girder placed on a chestnut on the river bed and a stone placed on the well girder.
River structure characterized by that. 請求項１から請求項４のいずれか１項に記載の河川構造において、
水叩きが、河床又は河床の上の栗石の上に設置した石の下部をコンクリートで固めたものである、
ことを特徴とする河川構造。 In the river structure according to any one of claims 1 to 4,
The water hitting is the bottom of the stone placed on the river bed or chestnut on the river bed, solidified with concrete,
River structure characterized by that.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109680659A (en) * 2018-12-28 2019-04-26 中国水利水电科学研究院 A kind of water channeling type power station Overflow Section ecological reconstruction structure and method
CN110629770A (en) * 2019-09-27 2019-12-31 河北工业大学 Reservoir side slope hydro-fluctuation belt seepage-proofing slope protection structure and construction method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3025831U (en) * 1995-05-02 1996-06-25 日本プラフォーム株式会社 River crossing structure where fish can easily climb
JP2951330B1 (en) * 1998-10-07 1999-09-20 卓生 行本 Woodwork sinking structure
JP3611540B2 (en) * 2001-08-24 2005-01-19 株式会社サワモト River dam structure
JP3144408U (en) * 2008-06-17 2008-08-28 群馬石積協同組合 Weir structure
JP5837342B2 (en) * 2011-06-30 2015-12-24 株式会社大手組 Fishway

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3025831U (en) * 1995-05-02 1996-06-25 日本プラフォーム株式会社 River crossing structure where fish can easily climb
JP2951330B1 (en) * 1998-10-07 1999-09-20 卓生 行本 Woodwork sinking structure
JP3611540B2 (en) * 2001-08-24 2005-01-19 株式会社サワモト River dam structure
JP3144408U (en) * 2008-06-17 2008-08-28 群馬石積協同組合 Weir structure
JP5837342B2 (en) * 2011-06-30 2015-12-24 株式会社大手組 Fishway

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109680659A (en) * 2018-12-28 2019-04-26 中国水利水电科学研究院 A kind of water channeling type power station Overflow Section ecological reconstruction structure and method
CN110629770A (en) * 2019-09-27 2019-12-31 河北工业大学 Reservoir side slope hydro-fluctuation belt seepage-proofing slope protection structure and construction method thereof

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