JP2005336765A - Bag-shaped roof weir - Google Patents

Bag-shaped roof weir Download PDF

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JP2005336765A
JP2005336765A JP2004154728A JP2004154728A JP2005336765A JP 2005336765 A JP2005336765 A JP 2005336765A JP 2004154728 A JP2004154728 A JP 2004154728A JP 2004154728 A JP2004154728 A JP 2004154728A JP 2005336765 A JP2005336765 A JP 2005336765A
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bag body
rubber bag
river
downstream
rectifying cloth
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Kazuya Shigei
和弥 重井
Yoshinori Hiramori
良典 平盛
Yoshinobu Mori
良信 森
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Hokoku Kogyo Co Ltd
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Hokoku Kogyo Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag-shaped roof weir which can reduce a waterfall sound of an overflow flowing over the weir. <P>SOLUTION: A rubber bag body 3, which switches between a rising state and a tilted state by supplying/discharging a fluid such as air, is installed in the state of crossing a river 2. A flow straightening fabric 5 is arranged in such a manner as to cover the bag body 3. The vicinity 10 of the end of the fabric 5, which is arranged on the downstream side of the river 2, is connected to a member 11 (e.g. a rubber rope) with elasticity, which is fixed to a river bed 6 on the downstream with respect to the bag body 3. When the bag body 3 is put into the erected state by supplying the air etc. into the bag body 3, a slide-like inclined plane 12 is formed in the direction of the member 11 from a top part of the bag body 3 by using the fabric 5 which is arranged on the downstream side with respect to the top part of the bag body 3. The overflow flowing over the top part of the bag body 3 is diagonally flown along the inclined plane 12 which is formed by using the fabric 5, so that the waterfall sound can be reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、河川に配設した起立・倒伏可能なゴム袋体を使用する袋体起伏堰に関し、特に、ゴム袋体の起立時にゴム袋体上を越えて下流側へ流れる越流水の騒音を低減する袋体起伏堰に関するものである。   The present invention relates to a bag hoisting weir using a rubber bag body that can be erected and laid down in a river, and in particular, the noise of overflow water that flows over the rubber bag body downstream when the rubber bag body stands up. The present invention relates to a bag body weir to be reduced.

河川を横断して配設し、水や空気等の流体を給入あるいは排出することにより起立あるいは倒伏状態に変化させ、河川の流水を貯留あるいは流下させるゴム袋体から成る袋状起伏堰は従来から知られている。河川の流水を貯留する場合には、ゴム袋体に上記空気等を給入しゴム袋体を膨張させて起立状態にする。これに対して上記のようにして貯留した河川の流水を除く場合には、ゴム袋体から上記空気等を排出しゴム袋体を倒伏状態にして下流方向へ河川水を流下させる。   Conventionally, a bag-like undulation weir consisting of a rubber bag that is placed across a river and changes to a standing or lying state by supplying or discharging fluids such as water or air, and storing or flowing down the river water Known from. When storing river water, the rubber bag body is supplied with the air or the like, and the rubber bag body is inflated to stand up. On the other hand, when the river water stored as described above is removed, the air or the like is discharged from the rubber bag body so that the rubber bag body is in a lying state and the river water is allowed to flow downstream.

しかし、このような構成を有する袋状起伏堰の場合、貯留させた流水がゴム袋体の頂部を溢れて流れ出すと、ゴム袋体との間に負圧が生じ、これにより振動が発生して騒音の要因となるばかりでなく、ゴム袋体の耐久性に影響を及ぼす問題があった。
そこで、この問題を解決する手段として、特許文献1に示すものがあり、図6に示されるような、ゴム製堰21の頂部近辺に網状フィン24を設けたものが開示されている。これによれば網状フィン24によってゴム製堰21の頂部を溢れ出た水流(「越流水」という)の流れをランダムにし、ゴム製堰の袋状体と越流水との間の負圧を少ない状態にすることができる。また、越流水や流木等が衝突することによるフィンへの衝撃を吸収低下させることができる。従って、ゴム製堰の振動を減少させることができ、騒音の発生を抑えると共に、振動、あるいは越流等の衝突を要因とするゴム製堰の耐久性の低下を改善することができる。
However, in the case of the bag-like undulation weir having such a configuration, when the stored flowing water overflows and flows out from the top of the rubber bag body, a negative pressure is generated between the rubber bag body and vibration is generated thereby. In addition to causing noise, there is a problem that affects the durability of the rubber bag.
Therefore, as means for solving this problem, there is one disclosed in Patent Document 1, and a device in which a net-like fin 24 is provided near the top of a rubber weir 21 as shown in FIG. 6 is disclosed. According to this, the flow of the water flow (referred to as “overflow water”) overflowing the top of the rubber weir 21 by the net-like fins 24 is randomized, and the negative pressure between the bag-like body of the rubber weir and the overflow water is reduced. Can be in a state. Further, it is possible to absorb and reduce the impact on the fins caused by the collision of overflow water or driftwood. Accordingly, the vibration of the rubber weir can be reduced, the generation of noise can be suppressed, and the deterioration of the durability of the rubber weir caused by the collision such as vibration or overflow can be improved.

特開平11−303051号公報Japanese Patent Laid-Open No. 11-303051

しかしながら、特許文献1の発明では、ゴム製堰の振動による騒音、あるいはゴム製堰に取り付けたフィンへの衝突による騒音を抑えることは可能であったが、越流水が水位の低いゴム製堰の下流側に落下する際の落水音を抑えることはできなかった。即ち、ゴム製堰を起立状態にして河川の流水を貯留した場合、ゴム製堰の上流水深はゴム製堰の堰頂まで達する。従って、越流水はゴム製堰の堰頂位置から下流水位まで落下することになり、その際に落水音が生じる。特許文献1に記載された発明では、この越流水による落水音の発生を低減することができないという不具合があった。   However, in the invention of Patent Document 1, it was possible to suppress the noise caused by the vibration of the rubber weir, or the noise caused by the collision with the fin attached to the rubber weir. However, the overflow water has a low water level. The sound of falling water when falling downstream could not be suppressed. That is, when the river weir is stored with the rubber weir standing, the upstream water depth of the rubber weir reaches the top of the rubber weir. Therefore, the overflow water falls from the top position of the rubber weir to the downstream water level, and a falling sound is generated at that time. In the invention described in Patent Document 1, there is a problem that it is not possible to reduce the occurrence of falling water sound due to the overflow water.

そこで、本願発明はこのような事情に鑑みてなされたものであり、越流水による落水音の発生を低減することができると共に、ゴム袋体の起立および倒伏状態の変化を効率良く行なうことができる袋体起伏堰の提供を目的とするものである。   Therefore, the present invention has been made in view of such circumstances, and can reduce the occurrence of falling noise due to overflow water, and can efficiently raise the rubber bag and change the lying state. The purpose is to provide a bag body weir.

上記課題を解決するために、請求項1に係る袋状起伏堰の発明は、空気を含む流体が給入・排出されることにより起立・倒伏可能なゴム袋体を河川に横断して設置した袋状起伏堰において、前記ゴム袋体の起立時にゴム袋体上を越えて流れる越流水を、前記河川の下流方向へ斜流させる整流布を設けたことを特徴とするものである。   In order to solve the above-mentioned problem, the invention of the bag-like undulation weir according to claim 1 has installed a rubber bag body that can stand up and fall by a fluid containing air being supplied and discharged across the river. In the bag-like undulation weir, there is provided a rectifying cloth for diagonally flowing the overflow water flowing over the rubber bag body when the rubber bag body stands up.

ゴム袋体が起立状態になると河川の流水は貯留され、ゴム袋体の上流側の水位はゴム袋体の堰頂位置まで達し、ゴム袋体の上流側と下流側の水位には差が生じる。そして、貯留された上流側の水位がゴム袋体の堰頂位置を超えると、貯留水はゴム袋体上を越えて溢れ出す。このゴム袋体の頂部を越えて流れ出す水を越流水といい、越流水はゴム袋体の頂部の位置から下流側の水面に落下する。そこでゴム袋体の頂部から下流側の水面に渡って整流布を配設し、越流水を整流布に沿って斜流させることで落水音の発生を低減する。   When the rubber bag body stands up, the river water is stored, the water level upstream of the rubber bag body reaches the dam top position of the rubber bag body, and there is a difference between the water level upstream and downstream of the rubber bag body . When the stored upstream water level exceeds the weir top position of the rubber bag body, the stored water overflows over the rubber bag body. The water that flows over the top of the rubber bag is called overflow water, and the overflow water falls from the position of the top of the rubber bag to the downstream water surface. Therefore, a flow rectifying cloth is disposed from the top of the rubber bag body to the downstream water surface, and the overflow water is caused to flow obliquely along the flow rectifying cloth, thereby reducing the occurrence of a falling sound.

上記課題を解決するために、請求項2に係る袋状起伏堰の発明は、請求項1の発明において、前記整流布は、前記ゴム袋体を覆うように配設され、上流側の整流布の端部はゴム袋体と共に河床に固定部材によって固定され、下流側の整流布の端部またはその近傍は、ゴム袋体の位置よりも下流側の河床に固定された伸縮性を有する部材に接続されていることを特徴とするものである。   In order to solve the above-mentioned problem, the invention of the bag-like undulation weir according to claim 2 is the invention of claim 1, wherein the rectifying cloth is disposed so as to cover the rubber bag body, and the upstream rectifying cloth is provided. The end of the rubber bag is fixed to the river bed with a fixing member, and the end of the downstream rectifying cloth or the vicinity thereof is a stretchable member fixed to the river bed downstream of the position of the rubber bag. It is characterized by being connected.

ゴム袋体の頂部から下流側の水面に渡って配設される整流布の、河川の上流側に位置する端部は、ゴム袋体と一緒に河床に固定されて、且つ、ゴム袋体を覆うように配設されているので、越流水を整流布の上面に沿って流下させると共に、ゴム袋体の保護材としても作用する。また、河川の下流側に配設される整流布の端部あるいはその端部の近傍は、伸縮性を有する部材に取り付けられ、且つ、その伸縮性を有する部材はゴム袋体の位置よりも下流側の河床に固定されているので、整流布は流水の押圧によって変形せずに越流水を確実に斜流させる。   The end of the rectifying cloth, which is arranged from the top of the rubber bag body to the downstream water surface, is located on the upstream side of the river, is fixed to the river bed together with the rubber bag body, and the rubber bag body Since it is arrange | positioned so that it may cover, while flowing down overflow water along the upper surface of a baffle cloth, it acts also as a protective material of a rubber bag body. Further, the end portion of the flow regulating cloth disposed on the downstream side of the river or the vicinity of the end portion is attached to a member having elasticity, and the member having the elasticity is downstream from the position of the rubber bag body. Since it is fixed to the river bed on the side, the rectifying cloth ensures that the overflow water flows diagonally without being deformed by the pressure of the flowing water.

上記課題を解決するために、請求項3に係る袋状起伏堰の発明は、請求項1または2の発明において、起立状態となった前記ゴム袋体の頂上位置よりも下流側に配設される整流布は、前記伸縮性を有する部材の張力によって前記整流布が固定された下流側の河床方向へ引かれ、滑り台状の傾斜面を形成していることを特徴とするものである。河川の下流側に配設される整流布の端部あるいはその端部の近傍は、伸縮性を有する部材によって引っ張られているため、整流布によって形成される傾斜面は、ゴム袋体の起立状態が変化した場合にも平坦な滑り台状を維持する。   In order to solve the above-mentioned problem, the invention of the bag-like undulation weir according to claim 3 is arranged downstream of the top position of the rubber bag body in the standing state in the invention of claim 1 or 2. The rectifying cloth is drawn toward the downstream river bed to which the rectifying cloth is fixed by the tension of the elastic member to form a slide-like inclined surface. Since the end of the rectifying cloth disposed in the downstream side of the river or the vicinity of the end is pulled by a member having elasticity, the inclined surface formed by the rectifying cloth is the standing state of the rubber bag body The flat slide shape is maintained even when changes occur.

上記課題を解決するために、請求項4に係る袋状起伏堰の発明は、請求項1から3いずれかの発明において、前記下流側の整流布の端部またはその近傍は、所定の間隔を置いて河床に固定された複数の前記伸縮性を有する部材と接続されており、整流布の端部またはその近傍と、河床との間は、河川水が通水可能な状態に配設されていることを特徴とするものである。整流布の端部またはその近傍と、河床との間を河川水が通水可能な状態にすることにより、整流布の下側に貯留する流水、泥等を下流方向へ排出させる。   In order to solve the above-mentioned problem, the invention of the bag-like undulation weir according to claim 4 is the invention according to any one of claims 1 to 3, wherein an end portion of the downstream rectifying cloth or the vicinity thereof has a predetermined interval. It is connected to a plurality of members having elasticity that are placed and fixed to the river bed. Between the end of the rectifying cloth or the vicinity thereof and the river bed, the river water is arranged in a state that allows water to pass therethrough. It is characterized by being. By making the river water flowable between the end of the flow rectifying cloth or the vicinity thereof and the river bed, the running water, mud, etc. stored below the flow rectifying cloth are discharged in the downstream direction.

本発明に係る袋状起伏堰によれば、整流布によってゴム袋体の頂部から下流側の河床に渡り傾斜面を形成することができるので、越流水をその傾斜面に沿って斜流させることができ、ゴム袋体の頂部からの落水による発生音を低減させることができる。また、整流布の下流側の端部等を、伸縮性を有する部材によって河川の下流方向へ引っ張ることにより、整流布によって平坦な傾斜面を形成することができ、越流水を整流布に沿って確実に斜流させ落水による発生音を低減させることができる。   According to the bag-like undulation weir according to the present invention, an inclined surface can be formed from the top of the rubber bag body to the downstream river bed by the rectifying cloth, so that the overflow water is allowed to flow diagonally along the inclined surface. It is possible to reduce noise generated by water falling from the top of the rubber bag. In addition, by pulling the downstream end of the rectifying cloth, etc., in the downstream direction of the river with a stretchable member, a flat inclined surface can be formed by the rectifying cloth, and the overflow water can flow along the rectifying cloth. It is possible to reliably flow diagonally and reduce the sound generated by falling water.

以下、本発明に係る袋状起伏堰の実施の形態を添付図面に基づいて説明する。
図1は、河川を横断して設置された袋状起伏堰の断面図を示す。河川2は図の左側方向を上流としている。袋状起伏堰1は、河川2の幅方向、即ち、図の手前側から奥側方向へ延びて配設され、河川2を横断している。袋状起伏堰1は、起立状態または倒伏状態に変化可能なゴム袋体3と、ゴム袋体3を覆うように配設される整流布5から概略構成されている。ゴム袋体3はゴム引布起伏堰の特徴である可撓性材料からなり、ゴム袋体3の一部が河床6に固定部材7によって固定されており、密封された袋状に形成されている。例えば、二枚のゴム引き布の四周を接着して、あるいは一枚のゴム引き布の三周を接着して形成され、その接着辺が河川2の上流側において固定金物7によって河床6に固着されている。
Embodiments of a bag-like undulation weir according to the present invention will be described below with reference to the accompanying drawings.
FIG. 1 shows a cross-sectional view of a bag-like undulation weir installed across a river. River 2 is upstream in the left direction of the figure. The bag-like undulation weir 1 is disposed extending in the width direction of the river 2, that is, from the front side to the back side in the figure, and crosses the river 2. The bag-like undulation weir 1 is generally composed of a rubber bag 3 that can be changed to a standing state or a lying state, and a rectifying cloth 5 that is disposed so as to cover the rubber bag 3. The rubber bag body 3 is made of a flexible material that is characteristic of the rubber-drawn undulation weir. A part of the rubber bag body 3 is fixed to the river bed 6 by a fixing member 7 and is formed in a sealed bag shape. Yes. For example, it is formed by bonding four rounds of two rubberized cloths or by bonding three rounds of one rubberized cloth, and the bonded side is fixed to the riverbed 6 by the fixed hardware 7 on the upstream side of the river 2. Has been.

ゴム袋体3はその内部に流体が給入もしくは排出され、膨張もしくは縮小する仕組みになっており、ゴム袋体3内に給入される流体としては、一般的に水、あるいは空気が用いられる。図1には、流体として空気が給入・排出される形態が示されている。ゴム袋体3には河川2の外部に設けられた送風機8から延びる送排気管9が連通されており、送排気管9を介してゴム袋体3に空気を給入することによって、ゴム袋体3は膨張し起立状態となり、逆に送排気管9を介して空気を排出することによって、ゴム袋体3は縮小し倒伏状態となる。   The rubber bag body 3 has a mechanism in which a fluid is supplied or discharged into the rubber bag body 3 and expands or contracts. As the fluid supplied into the rubber bag body 3, water or air is generally used. . FIG. 1 shows a form in which air is supplied and discharged as a fluid. An air supply / exhaust pipe 9 extending from a blower 8 provided outside the river 2 is communicated with the rubber bag body 3. By supplying air to the rubber bag body 3 through the air supply / exhaust pipe 9, the rubber bag body 3 is connected. The body 3 expands and stands up, and conversely, by discharging air through the air supply / exhaust pipe 9, the rubber bag body 3 shrinks and falls down.

整流布5は、ゴム袋体3の上流側に貯留された流水のうちゴム袋体3の頂部を越えて溢れ出した流水を下流側へ斜め方向に流すためのものである。上記送風機8によってゴム袋体3に流体としての空気が給入されると、ゴム袋体3は膨張し起立状態となって河川2の上流側の流水を堰き止める。ゴム袋体3の上流側に貯留された流水は次第にその水深を高め、ゴム袋体3の頂部まで達した後にゴム袋体3を越え、いわゆる越流水となって下流側に流れ出す。整流布5はゴム袋体3を覆うように配設されており、整流布5の上流側の端部(河川2の上流側に配設される整流布5の端部)は、ゴム袋体3と共に河床6に固定部材7によって固定されている。尚、図1ではゴム袋体3と共に固定する場合を示しているが、ゴム袋体3とは別に整流布5を単体で河床6に固定するようにしてもよい。   The rectifying cloth 5 is for flowing the flowing water that has overflowed beyond the top of the rubber bag 3 out of the flowing water stored on the upstream side of the rubber bag 3 toward the downstream side in an oblique direction. When air as a fluid is fed into the rubber bag body 3 by the blower 8, the rubber bag body 3 expands and stands up to block water flowing upstream of the river 2. The running water stored on the upstream side of the rubber bag body 3 gradually increases its depth, reaches the top of the rubber bag body 3, passes over the rubber bag body 3, and flows into the downstream side as so-called overflow water. The rectifying cloth 5 is disposed so as to cover the rubber bag body 3, and the upstream end of the rectifying cloth 5 (the end of the rectifying cloth 5 disposed on the upstream side of the river 2) is a rubber bag body. 3 is fixed to the river bed 6 by a fixing member 7. Although FIG. 1 shows the case of fixing together with the rubber bag body 3, the rectifying cloth 5 may be fixed to the river bed 6 separately from the rubber bag body 3.

また、整流布5の下流側の端部10a、または端部から内側(河川2において上流側)に入った端部近傍10は、河床6に固定された伸縮性を有する部材11に接続されている。伸縮性を有する部材11、例えば、ゴムロープ11は、ゴム袋体3の配設されている河床6の位置よりも下流側の河床6に固定部材13によって固定されている。ゴムロープ11は河幅方向へ所定の間隔、例えば、約400mm間隔で複数固定されている。これにより、ゴム袋体3が起立状態となったとき、ゴム袋体3の頂部よりも下流側に配置される整流布5によって傾斜面12が形成され、この傾斜面12により越流水が斜流することになる。また、流水が貯留されるゴム袋体3の上流側を整流布5によって覆うことにより、流木、転石等の衝突によるゴム袋体3への損傷を防止することができる。   Further, the downstream end portion 10 a of the rectifying cloth 5, or the end vicinity 10 that enters the inside (upstream side in the river 2) from the end portion is connected to a member 11 having elasticity that is fixed to the river bed 6. Yes. The elastic member 11, for example, the rubber rope 11 is fixed to the river bed 6 on the downstream side of the position of the river bed 6 where the rubber bag 3 is disposed by the fixing member 13. A plurality of rubber ropes 11 are fixed in the river width direction at predetermined intervals, for example, at intervals of about 400 mm. Thereby, when the rubber bag body 3 is in the standing state, the inclined surface 12 is formed by the rectifying cloth 5 arranged on the downstream side of the top portion of the rubber bag body 3, and the overflow water flows diagonally by the inclined surface 12. Will do. In addition, by covering the upstream side of the rubber bag body 3 in which running water is stored with the rectifying cloth 5, it is possible to prevent damage to the rubber bag body 3 due to collision of driftwood, rolling stones, and the like.

尚、越流水を落水させずに河床6まで斜流させるためには、整流布5によって傾斜面12が形成されたときに、整流布5の下流側の端部10aが河床2まで達していること、即ち、整流布5の端部10aが伸縮性を有する部材11の固定部材13の位置よりも下流側に延びて配設されていることが望ましい。従って、このような構成を実現させるためには、整流布5の端部10aから内側に入った端部近傍10を、伸縮性を有する部材11に接続することが望ましく、これによりゴム袋体3の下流側に河川水が少ないときにも越流水を落水させずに河床6まで斜流させることができ消音効果を高めることができる。   In order to cause the overflow water to flow diagonally to the riverbed 6 without falling, when the inclined surface 12 is formed by the rectifying cloth 5, the downstream end 10 a of the rectifying cloth 5 reaches the riverbed 2. That is, it is desirable that the end portion 10a of the rectifying cloth 5 is disposed so as to extend downstream from the position of the fixing member 13 of the member 11 having elasticity. Therefore, in order to realize such a configuration, it is desirable to connect the vicinity 10 of the end portion that enters the inner side from the end portion 10a of the rectifying cloth 5 to the member 11 having elasticity, whereby the rubber bag 3 Even when there is little river water on the downstream side of the river, it is possible to flow diagonally up to the riverbed 6 without dropping the overflow water, so that the silencing effect can be enhanced.

図2は、整流布5の下流側の端部10aおよび端部近傍10を示す拡大図であり、端部近傍10が伸縮性を有する部材11に接続されている状態を示している。実線で示す整流布5と伸縮性を有する部材11は、ゴム袋体3が起立状態となりその上流側に流水が貯留されているときの様子を示し、破線で示す整流布5と伸縮性を有する部材11は、ゴム袋体3が起立状態となりその上流側に未だ流水が貯留されていないときの様子を示している。   FIG. 2 is an enlarged view showing the downstream end portion 10a and the end vicinity 10 of the flow straightening cloth 5, and shows a state where the end vicinity 10 is connected to a member 11 having elasticity. The rectifying cloth 5 indicated by a solid line and the elastic member 11 show a state when the rubber bag 3 is in an upright state and flowing water is stored on the upstream side, and has elasticity with the rectifying cloth 5 indicated by a broken line. The member 11 shows a state in which the rubber bag 3 is in an upright state and running water is not yet stored on the upstream side.

ここで、図2のように整流布5と伸縮性を有する部材11が実線あるいは破線に示す状態となる理由を図3に基づいて説明する。図3は、ゴム袋体3が起立状態となりその上流側に流水が貯留されているときのゴム袋体3の状態(実線で示されるゴム袋体3)と、貯留さていないときのゴム袋体3の状態(破線で示されるゴム袋体3)を示している。送風機8によってゴム袋体3内に空気を給入し終わった直後、即ち、ゴム袋体3が起立状態となって流水を貯留開始した直後で、上流側に貯留されている流水の水深が未だ浅い状態では、貯留された流水によりゴム袋体3に掛かる上流側から下流側方向への水圧は小さいため、ゴム袋体3は破線で示すように略鉛直方向に起立した姿勢を維持する。しかし、ゴム袋体3の上流側に貯留された流水の水深が深くなると、貯留された流水によりゴム袋体3に掛かる上流側から下流側方向への水圧は大きくなり、ゴム袋体3は実線で示すように下流方向へ傾斜した起立状態となる。   Here, the reason why the rectifying cloth 5 and the elastic member 11 are in the state indicated by the solid line or the broken line as shown in FIG. 2 will be described with reference to FIG. FIG. 3 shows a state of the rubber bag body 3 when the rubber bag body 3 is in a standing state and flowing water is stored upstream thereof (a rubber bag body 3 indicated by a solid line), and a rubber bag body when the rubber bag body 3 is not stored. 3 shows a rubber bag body 3 indicated by a broken line. Immediately after the air has been supplied into the rubber bag body 3 by the blower 8, that is, immediately after the rubber bag body 3 stands up and starts storing the flowing water, the depth of the flowing water stored on the upstream side is still In the shallow state, the water pressure from the upstream side to the downstream side applied to the rubber bag body 3 due to the stored flowing water is small, so that the rubber bag body 3 maintains the posture standing up in a substantially vertical direction as indicated by a broken line. However, when the depth of running water stored on the upstream side of the rubber bag body 3 becomes deep, the water pressure from the upstream side to the downstream side on the rubber bag body 3 increases due to the stored running water, and the rubber bag body 3 is shown by a solid line. As shown in Fig. 2, the upright state is inclined in the downstream direction.

このようにゴム袋体3の起立姿勢が貯留された流水の量によって変化することにより、この変化に伴なってゴム袋体3の頂部から下流側の河床の固定部材13方向へ形成される整流布5による傾斜面12の角度が変化する。また、ゴム袋体3の姿勢と整流布5の傾斜角度の変化に伴なって、伸縮性を有する部材11の伸縮量が変化する。即ち、伸縮性を有する部材11は、ゴム袋体3が下流側に傾斜した起立状態となると、その傾斜に相当する分だけ整流布5が傾斜角度を増すと共に河川2の下流方向にずれるため、図2の実線で示すように縮小し、ゴム袋体3が略鉛直方向に起立状態となると、整流布5が傾斜角度を減少させると共に河川2の上流方向にずれるため、図2の破線で示すように伸張する。そして、伸縮性を有する部材11がゴム袋体3の起立状態に追従して伸縮するので、常に整流布5は伸縮性を有する部材11の張力によって引っ張られた状態となり、整流布5によって形成される傾斜面12は弛みを生じることなく略平面となる滑り台状の傾斜面12を形成する。これにより、越流水は整流布5により形成された傾斜面12に沿って滑るように斜流するため落水音を低減することができる。   In this way, when the standing posture of the rubber bag body 3 changes depending on the amount of the stored flowing water, the rectification formed in the direction from the top of the rubber bag body 3 toward the fixing member 13 of the downstream river bed with this change. The angle of the inclined surface 12 by the cloth 5 changes. In addition, as the posture of the rubber bag 3 and the inclination angle of the rectifying cloth 5 change, the amount of expansion / contraction of the elastic member 11 changes. That is, when the rubber bag 3 is in an upright state in which the rubber bag body 3 is inclined to the downstream side, the elastic member 11 increases the inclination angle by an amount corresponding to the inclination and shifts in the downstream direction of the river 2. As shown by the solid line in FIG. 2, when the rubber bag body 3 stands up in a substantially vertical direction, the rectifying cloth 5 decreases the inclination angle and shifts in the upstream direction of the river 2. Stretch like so. And since the elastic member 11 expands and contracts following the standing state of the rubber bag 3, the rectifying cloth 5 is always pulled by the tension of the elastic member 11 and is formed by the rectifying cloth 5. The inclined surface 12 forms a slide-like inclined surface 12 that is substantially flat without causing slack. Thereby, since the overflow water flows diagonally so as to slide along the inclined surface 12 formed by the rectifying cloth 5, the sound of falling water can be reduced.

図4は、河川を横断して設置された袋状起伏堰の別の形態の断面図を示す。
この形態は、空気が排出されて倒伏状態となったゴム袋体3および整流布5を、計画河床高以下に収納するため、河床6に凹部15を形成したものである。袋状起伏堰を構成するその他の部材は図1に示す形態の部材と同様の部材である。尚、図1に示されている送風機8および送排気管9は図示を省略している。
FIG. 4 shows a cross-sectional view of another form of bag-like undulation weir installed across the river.
In this embodiment, the recessed portion 15 is formed in the river bed 6 in order to store the rubber bag 3 and the flow regulating cloth 5 which are in a fallen state due to the discharge of air below the planned river bed height. The other members constituting the bag-like undulation weir are the same members as the members shown in FIG. The blower 8 and the air supply / exhaust pipe 9 shown in FIG. 1 are not shown.

ゴム袋体3に空気が給入されると、図4に示すようにゴム袋体3は起立状態になり、ゴム袋体3によって流水が堰き止められ、上流側に流水が貯留される。貯留された流水の水位がゴム袋体3の頂部を越えると越流水となって下流側に流下する。ゴム袋体3を覆うように配設された整流布5のうち、ゴム袋体3の頂部よりも下流側に配設された整流布5は、その下流側の端部10aから内側に入った端部近傍10が、河床6に固定部材13によって固定された複数の伸縮性を有する部材11に接続されている。これにより、整流布5は弛みを生じることなく滑り台状の傾斜面12を形成し、越流水を落水させることなく傾斜面12に沿って斜流させる。整流布5の下流側の端部10aは、固定部材13の位置よりも下流側の河床6まで延びて配設されている。整流布5はその下流側の端部10aから内側に入った端部近傍10が固定部材13と接続されているため、整流布5の下流側の端部10a(正確には固定部材13と接続されている部分よりも下流側の部分)は、河床6上に単に載せられているだけの状態で配設されている。   When air is supplied to the rubber bag body 3, as shown in FIG. 4, the rubber bag body 3 is in an upright state, the running water is blocked by the rubber bag body 3, and the running water is stored upstream. When the water level of the stored flowing water exceeds the top of the rubber bag body 3, it overflows and flows downstream. Among the flow regulating cloths 5 arranged so as to cover the rubber bag body 3, the flow regulating cloth 5 arranged on the downstream side of the top of the rubber bag body 3 enters inside from the downstream end 10 a. The vicinity 10 of the end is connected to a plurality of members 11 having elasticity that are fixed to the river bed 6 by fixing members 13. Thereby, the baffle cloth 5 forms the slide-like inclined surface 12 without causing slack, and causes the overflow water to flow obliquely along the inclined surface 12 without dropping overflow water. The downstream end portion 10 a of the rectifying cloth 5 is disposed so as to extend to the river bed 6 on the downstream side of the position of the fixing member 13. Since the rectifying cloth 5 is connected to the fixing member 13 in the vicinity of the end 10 that enters the inside from the downstream end 10 a, the downstream end 10 a of the rectifying cloth 5 (precisely connected to the fixing member 13). The portion on the downstream side of the portion that has been placed is simply placed on the riverbed 6.

ゴム袋体3が起立した状態では、整流布5によって形成される傾斜面12の下側に、ゴム袋体3と整流布5の傾斜面12と河床6と河川の側壁により囲われる空間部が形成されている。この空間部は、ゴム袋体3と河川の側壁との間、あるいは傾斜面12を形成している整流布5と河川の側壁との間に隙間を有しているため、この隙間から傾斜面12の下側に流水(越流水も含む)が進入する。そして、この流水には泥等も含まれているため傾斜面12の下側の河床6(凹部15が形成されている部分)には水、泥等が貯留する。   In a state where the rubber bag body 3 stands up, a space portion surrounded by the rubber bag body 3, the inclined surface 12 of the rectifying cloth 5, the river bed 6, and the river side wall is formed below the inclined surface 12 formed by the rectifying cloth 5. Is formed. Since this space portion has a gap between the rubber bag 3 and the side wall of the river, or between the rectifying cloth 5 forming the inclined surface 12 and the side wall of the river, the inclined surface is formed from this gap. Running water (including overflow water) enters under 12. Since this running water also contains mud and the like, water, mud and the like are stored in the river bed 6 (portion where the recess 15 is formed) below the inclined surface 12.

このような状態においてゴム袋体3の空気を排出すると、ゴム袋体3は次第に縮小していく。図5(a)は、ゴム袋体3から空気を排出し、ゴム袋体3を倒伏状態にしたときの図である。図4のようにゴム袋体3を覆うように配設されていた整流布5は、ゴム袋体3の倒伏に伴なって、その上流側の部分をゴム袋体3の上側に、下流側の部分を河床6の上に置いた状態で倒伏する。このとき整流布5の下流側の端部10aは、上記のように河床6上に単に載せられているだけの状態であるため、この端部10aと河床6との間は通水可能な状態になっている。   When the air in the rubber bag body 3 is discharged in such a state, the rubber bag body 3 gradually shrinks. FIG. 5A is a view when the air is discharged from the rubber bag body 3 to put the rubber bag body 3 in a lying state. The flow straightening cloth 5 arranged so as to cover the rubber bag body 3 as shown in FIG. 4 has an upstream portion on the upper side of the rubber bag body 3 and a downstream side as the rubber bag body 3 falls down. Lay down on the riverbed 6 At this time, since the downstream end portion 10a of the rectifying cloth 5 is simply placed on the river bed 6 as described above, water can be passed between the end portion 10a and the river bed 6. It has become.

これにより傾斜面12の下側の河床6(凹部15の形成されている河床)に貯留した水、泥等は、ゴム袋体3および整流布5が倒伏すると、倒状に伴なって整流布5の側部から、詳しくは、例えば、整流布5の側端部と河川2の側壁との隙間から、傾斜面12の下面に流入してくる越流水によって、整流布5の端部10aの下側を通って下流側に排出される。従って、ゴム袋体3を倒伏させたときに凹部15に残留する泥等の量は極めて少なくなるため、残留泥等によって整流布5が巻き込まれ倒伏した整流布5に凹凸状態が発生するという不具合、さらには残留泥によって整流布5が膨らみゴム袋体3による堰の高さを低くするという不具合を防止することができる。図5(a)に示されるように、倒伏したゴム袋3、および整流布5の一部分は、河床6に形成した凹部15内に収納された状態となる。また、下流側の整流布5の端部10a、および端部近傍10は、図5(b)に示されるように、伸縮性を有する部材11が矢印方向へ(下流方向へ)固定部材13を中心に回転して移動するため、凹部15の形成されている河床6よりも下流部の河床6(図示を省略する凹部15が形成されていない河床6)上に達した状態で配置される。   As a result, the water, mud, etc. stored in the river bed 6 (the river bed in which the recess 15 is formed) below the inclined surface 12 will flow along with the fallen state when the rubber bag body 3 and the current flow cloth 5 fall down. Specifically, from the side of 5, for example, by the overflow water flowing into the lower surface of the inclined surface 12 from the gap between the side end of the rectifying cloth 5 and the side wall of the river 2, the end 10 a of the rectifying cloth 5 It is discharged downstream through the lower side. Therefore, since the amount of mud remaining in the recess 15 when the rubber bag 3 is laid down is extremely small, the rectifying cloth 5 is engulfed by the residual mud or the like, and the rectifying cloth 5 that has fallen down has an uneven state. In addition, it is possible to prevent the problem that the rectifying cloth 5 is expanded by the residual mud and the height of the weir by the rubber bag 3 is lowered. As shown in FIG. 5A, the fallen rubber bag 3 and a part of the rectifying cloth 5 are stored in a recess 15 formed in the river bed 6. Further, as shown in FIG. 5B, the end portion 10a of the downstream flow straightening cloth 5 and the vicinity 10 of the end portion have the stretchable member 11 in the direction of the arrow (downward) to fix the fixing member 13. Since it rotates and moves to the center, it is arranged in a state where it reaches the downstream river bed 6 (the river bed 6 in which the recess 15 not shown) is not formed, rather than the river bed 6 in which the recess 15 is formed.

また、袋状起伏堰の構成において、ゴム袋体3が起立した状態で河川2が増水したとき、所定の倒伏水位になるまではゴム袋体3を起立状態に維持し、倒伏水位に達したときに送排気管9を介して河川2の水圧によってゴム袋体3の空気を排出させるようにすることができる。この場合、ゴム袋体3は空気排出量に基づいて所定の時間で倒伏状態になるが、倒伏する過程において、ゴム袋体3の一部が先行して窪み、その部分が着床して水流が1箇所に集中して流れる、いわゆるVノッチ現象が発生する。このVノッチ発生時においても、ゴム袋体3と河川2の側壁との隙間、あるいは傾斜面12を形成している整流布5と河川2の側壁との隙間から傾斜面12の下側に泥等を含んだ流水(越流水も含む)が進入する。   Further, in the configuration of the bag-like undulating weir, when the river 2 is increased in a state where the rubber bag body 3 stands up, the rubber bag body 3 is maintained in an upright state until the predetermined lodging water level is reached, and the falling water level is reached. Sometimes, the air in the rubber bag 3 can be discharged by the water pressure of the river 2 through the air supply / exhaust pipe 9. In this case, the rubber bag body 3 is in a fallen state in a predetermined time based on the air discharge amount, but in the process of falling down, a part of the rubber bag body 3 is depressed in advance, and that part is landed to flow the water. A so-called V-notch phenomenon occurs in which the gas flows in one place. Even when this V-notch is generated, mud is formed below the inclined surface 12 from the gap between the rubber bag 3 and the side wall of the river 2 or from the gap between the rectifying cloth 5 forming the inclined surface 12 and the side wall of the river 2. Etc. (including overflow water).

従って、Vノッチ現象が発生した場合にも、上記のように整流布5の下流側の端部10aを、河床6上に単に載せただけの状態で配置させることにより、この端部10aと河床6との間を通水可能な状態にすることができ、傾斜面12の下側の河床6(凹部15の形成されている河床)に貯留した水、泥等を、凹部15から整流布5の端部10aの下側を通過させ下流側に排出させることができる。   Therefore, even when the V-notch phenomenon occurs, the end 10a on the downstream side of the rectifying cloth 5 is arranged in a state where it is simply placed on the river bed 6 as described above, so that the end 10a and the river bed are arranged. The water, mud, etc. stored in the river bed 6 below the inclined surface 12 (the river bed in which the recess 15 is formed) can be transferred from the recess 15 to the rectifying cloth 5. Can pass through the lower side of the end portion 10a and be discharged downstream.

尚、傾斜面12を形成する整流布5の下側に泥等を含む流水や越流水が進入することは図1に示す形態の場合においても同様であり、伸縮性を有する部材11を整流布5の端部10aから内側に入った端部近傍10に接続して、整流布5の下流側の端部10aを、上記のように河床6上に単に載た状態に配設させることにより、整流布5の端部10aと河床6との間は通水可能な状態となるため、ゴム袋体3から空気を排出させ倒伏させたとき、ゴム袋体3および整流布5の倒伏による圧力で、整流布5の傾斜面12の下側に貯留した水、泥等を端部10aの下側を通過させ下流側に排出させることができる。   In addition, in the case of the form shown in FIG. 1, it is the same in the case of the form shown in FIG. 1 that the flowing water and the overflow water containing mud etc. enter the lower side of the flow regulating cloth 5 that forms the inclined surface 12. By connecting the end portion 10a on the downstream side of the rectifying cloth 5 so as to be simply placed on the river bed 6 as described above Since the space between the end portion 10a of the rectifying cloth 5 and the river bed 6 can pass through the water, when the air is discharged from the rubber bag body 3 and laid down, the pressure caused by the fall of the rubber bag body 3 and the rectifying cloth 5 The water, mud, etc. stored below the inclined surface 12 of the flow regulating cloth 5 can pass through the lower side of the end portion 10a and be discharged downstream.

本発明に係る袋状起伏堰の一形態を示す断面図である。It is sectional drawing which shows one form of the bag-like undulation dam concerning this invention. 図1に示す袋状起伏堰を構成する整流布の端部近傍を示す部分拡大図である。It is the elements on larger scale which show the edge part vicinity of the baffle cloth which comprises the bag-shaped undulation weir shown in FIG. 図1に示す袋状起伏堰を構成するゴム袋体の、貯留する流水の水位の違いによる状態を示す断面図である。It is sectional drawing which shows the state by the difference in the water level of the stored flowing water of the rubber bag body which comprises the bag-like undulation weir shown in FIG. 本発明に係る袋状起伏堰の別の一形態を示す断面図である。It is sectional drawing which shows another one form of the bag-like undulation weir concerning this invention. (a)は、図4に示す袋状起伏堰の倒伏状態を示す断面図である。 (b)は、袋状起伏堰が倒状する際の、伸縮性を有する部材の様子を示す図である。(A) is sectional drawing which shows the fall state of the bag-like undulation weir shown in FIG. (B) is a figure which shows the mode of the member which has a stretching property at the time of a bag-like undulation weir falling down. 従来の袋状起伏堰の一形態を示す斜視図である。It is a perspective view which shows one form of the conventional bag-shaped undulation weir.

符号の説明Explanation of symbols

1 袋状起伏堰
2 河川
3 ゴム袋体
5 整流布
6 河床
7 固定部材
8 送風機
9 送排気管
10 端部近傍
10a 端部
11 伸縮性を有する部材
12 傾斜面
13 固定部材
15 凹部
DESCRIPTION OF SYMBOLS 1 Bag-like undulation weir 2 River 3 Rubber bag body 5 Rectification cloth 6 River bed 7 Fixed member 8 Blower 9 Air supply / exhaust pipe 10 End part vicinity 10a End part 11 Member with elasticity 12 Inclined surface 13 Fixed member 15 Recessed part

Claims (4)

空気を含む流体が給入・排出されることにより起立・倒伏可能なゴム袋体を河川に横断して設置した袋状起伏堰において、
前記ゴム袋体の起立時にゴム袋体上を越えて流れる越流水を、前記河川の下流方向へ斜流させる整流布を設けたことを特徴とする袋状起状堰。
In a bag-like undulation weir that is installed across a river with a rubber bag body that can stand up and fall when fluid containing air is supplied and discharged,
A bag-like dam according to claim 1, wherein a rectifying cloth is provided for allowing the overflow water flowing over the rubber bag body to flow obliquely in the downstream direction of the river when the rubber bag body stands.
前記整流布は、前記ゴム袋体を覆うように配設され、上流側の整流布の端部はゴム袋体と共に河床に固定部材によって固定され、下流側の整流布の端部またはその近傍は、ゴム袋体の位置よりも下流側の河床に固定された伸縮性を有する部材に接続されていることを特徴とする請求項1に記載の袋状起伏堰。 The rectifying cloth is disposed so as to cover the rubber bag body, and the end portion of the upstream rectifying cloth is fixed to the river bed together with the rubber bag body by a fixing member, and the end portion of the downstream rectifying cloth or the vicinity thereof is 2. The bag-like undulation weir according to claim 1, wherein the bag-like undulation weir is connected to a member having elasticity that is fixed to a river bed downstream from the position of the rubber bag body. 起立状態となった前記ゴム袋体の頂上位置よりも下流側に配設される整流布は、前記伸縮性を有する部材の張力によって前記整流布が固定された下流側の河床方向へ引かれ、滑り台状の傾斜面を形成していることを特徴とする請求項1または2に記載の袋状起伏堰。 The rectifying cloth disposed on the downstream side of the top position of the rubber bag body in the standing state is pulled toward the downstream river bed to which the rectifying cloth is fixed by the tension of the elastic member, The bag-like undulation weir according to claim 1 or 2, wherein a slide-like inclined surface is formed. 前記下流側の整流布の端部またはその近傍は、所定の間隔を置いて河床に固定された複数の前記伸縮性を有する部材と接続されており、整流布の端部またはその近傍と、河床との間は、河川水が通水可能な状態に配設されていることを特徴とする請求項1から3のいずれかに記載の袋状起伏堰。
An end portion of the downstream rectifying cloth or the vicinity thereof is connected to a plurality of members having elasticity that are fixed to the river bed at a predetermined interval, and an end portion of the rectifying cloth or the vicinity thereof, and the river bed The bag-like undulation weir according to any one of claims 1 to 3, wherein the river water is arranged in a state where river water can pass therethrough.
JP2004154728A 2004-05-25 2004-05-25 Bag-shaped roof weir Pending JP2005336765A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004154728A JP2005336765A (en) 2004-05-25 2004-05-25 Bag-shaped roof weir

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004154728A JP2005336765A (en) 2004-05-25 2004-05-25 Bag-shaped roof weir

Publications (1)

Publication Number Publication Date
JP2005336765A true JP2005336765A (en) 2005-12-08

Family

ID=35490634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004154728A Pending JP2005336765A (en) 2004-05-25 2004-05-25 Bag-shaped roof weir

Country Status (1)

Country Link
JP (1) JP2005336765A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008025168A (en) * 2006-07-20 2008-02-07 Marsima Aqua System Corp Derricking gate
JP2010104968A (en) * 2008-10-31 2010-05-13 Shimizu Corp System and method for improving river water quality
CN114259802A (en) * 2021-11-22 2022-04-01 江苏东方滤袋股份有限公司 High-efficient dust removal filter bag with dust collecting function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008025168A (en) * 2006-07-20 2008-02-07 Marsima Aqua System Corp Derricking gate
JP4505438B2 (en) * 2006-07-20 2010-07-21 株式会社丸島アクアシステム Rolling gate
JP2010104968A (en) * 2008-10-31 2010-05-13 Shimizu Corp System and method for improving river water quality
CN114259802A (en) * 2021-11-22 2022-04-01 江苏东方滤袋股份有限公司 High-efficient dust removal filter bag with dust collecting function

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