JPS6286213A - Flexible film dam - Google Patents
Flexible film damInfo
- Publication number
- JPS6286213A JPS6286213A JP22599185A JP22599185A JPS6286213A JP S6286213 A JPS6286213 A JP S6286213A JP 22599185 A JP22599185 A JP 22599185A JP 22599185 A JP22599185 A JP 22599185A JP S6286213 A JPS6286213 A JP S6286213A
- Authority
- JP
- Japan
- Prior art keywords
- flexible membrane
- flexible
- dam
- weir
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【発明の詳細な説明】
LMl、−立皿皿±1
本発明は、河川を横断して布設され、空気の供給により
起立し、排出により倒伏する可撓性膜1137に係り、
特に下流側に水位のある場所に布設される可撓性膜堰に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flexible membrane 1137 laid across a river, erected by supply of air, and lowered by discharge,
In particular, it relates to a flexible membrane weir installed at a location with a water level on the downstream side.
1米且韮
一般にゴム堰と称されている可撓性膜堰は、施工が簡単
で、製作費が安く、農業用水の取水や、河口における防
潮堰として広く使用されている。Flexible membrane weirs, commonly referred to as rubber weirs, are easy to construct and inexpensive to produce, and are widely used for agricultural water intake and as tide control weirs at estuaries.
斯かる可撓性膜堰では、長尺の可撓性膜(ゴム製、また
は軟質樹脂製)を二つ折り状にして、両端縁を揃え、該
両端縁部を上流側に向け、その部分を同幅方向に指向す
る一1百線上で押えて河床表面に固定して閉じた袋状体
を形成するか、あるいは前記の構成に加えて、両端縁部
の固定位置から適当な間隔を謂さ、袋状体の内部から前
記固定線と平行に可撓性膜を一直線上で押えている。上
流側および下流側の二列で可撓性膜を固定した後者の可
撓性膜堰は、特に、下流側水深がある場所に敷設される
。In such flexible membrane weirs, a long flexible membrane (made of rubber or soft resin) is folded in half, both edges are aligned, and both edges are directed upstream. Either press it on the 1100 line pointing in the same width direction and fix it to the river bed surface to form a closed bag-like body, or in addition to the above structure, set an appropriate distance from the fixing position of both end edges. , the flexible membrane is held in a straight line parallel to the fixing line from inside the bag-like body. The latter flexible membrane weir, in which flexible membranes are fixed in two rows on the upstream and downstream sides, is particularly installed where there is deep water on the downstream side.
しかるに、二列固定形式の可撓性膜堰においては、空気
の給、排出(抜気)により起立、倒伏せしめられるが、
特に、下流側に水深のある場所での倒伏の場合下記の問
題が生ずる。However, in a two-row fixed type flexible membrane weir, it can be raised and lowered by supplying and discharging air (venting);
In particular, the following problems occur when lodging in a place where there is deep water downstream.
ff16図(a)は河床コンクリート01上に布設され
た二列固定形式の可撓性膜11ii02の倒伏過程を縦
断側面図として示しており、該可撓性膜堰02は、同図
(a)に示すように上流側固定ラインAと下流側固定ラ
インBにて河床コンクリート01に固定されて布設され
る。またこのように布設された可撓性膜堰02の内室に
は、該可j真性膜堰02の内室の河床コンクリ−1゛0
1あるいは可撓性膜が固定ラインBより延在して固定ラ
インAに達して固定された該部分の可撓性膜上に空気の
給、排気(抜気)を行うためのバイブ兼スペーサ=03
と、河川の上流側の可撓性膜堰02の内面周方向に沿い
、かつ可撓性膜堰02の長尺方向に所定間隔を設けて複
数個のスペーサーSが貼着されている構造の可撓性膜9
02が多く用いられている。ff16 Figure (a) shows the lodging process of the two-row fixed type flexible membrane 11ii02 laid on the river bed concrete 01 as a longitudinal side view, and the flexible membrane weir 02 is shown in Figure (a). As shown in the figure, the upstream side fixed line A and the downstream side fixed line B are fixed to the river bed concrete 01 and installed. Moreover, in the inner chamber of the flexible membrane weir 02 installed in this way, the river bed concrete 1'0 of the inner chamber of the flexible membrane weir 02 is installed.
1 or a vibrator and spacer for supplying and exhausting air onto the flexible membrane at the part where the flexible membrane extends from the fixed line B and reaches the fixed line A and is fixed = 03
and a structure in which a plurality of spacers S are attached at predetermined intervals along the inner circumferential direction of the flexible membrane weir 02 on the upstream side of the river and in the longitudinal direction of the flexible membrane weir 02. flexible membrane 9
02 is often used.
が ゛し、−と −
しかし、このように桶成された可撓性膜堰02は、水式
可撓性膜堰と異なり、倒伏時に、充填空気を抜気してゆ
くと、初期段階では第6図<b)に示す如く河床コンク
リート01に固定される固定ラインA、Bの上方近傍が
河川の水圧と抜気によって可撓性膜堰02は、それぞれ
内方に緩かに弯曲変形して弯曲部位05.06を形成す
る。さらに充填空気の抜気が進むと、可撓性膜堰02に
形成された弯曲部位05.06は圧接されるとともに終
局的には合掌状態の可撓性膜堰02となり、堰の機能を
逸脱して倒伏可能状態となる。However, unlike the water-type flexible membrane weir, the flexible membrane weir 02 constructed in this way is different from the water-type flexible membrane weir, and when the filled air is vented at the time of lodging, at the initial stage, As shown in Fig. 6 <b), the flexible membrane weir 02 is gently deformed inwardly in the upper vicinity of fixed lines A and B fixed to the river bed concrete 01 due to river water pressure and air removal. to form curved portions 05.06. As the filled air is further discharged, the curved part 05.06 formed in the flexible membrane dam 02 is pressed against it and eventually becomes the flexible membrane dam 02 in a state of palms together, deviating from its function as a dam. It becomes possible to lie down.
しかして、可撓性膜堰02が抜気されて倒伏状態となり
14ても該可撓性膜堰02内には、第6図(C)の図示
の如< iJ撓性膜堰02の可撓性膜屈曲率の範囲内で
変形し弯曲形成された可撓性膜堰02の内室上部位Cと
、2枚のシートを重ねて接合して形成され、かつ可撓性
膜の屈曲率の範囲内で変形し弯曲形成された接合点部位
りおよび、可撓@膜j[!i02が合掌され、かつ、可
撓性膜堰02の屈曲率の範囲内で形成された頂部の部位
Eあるいは可撓性膜堰02の内壁に備えられたスペーサ
ーSの周囲に形成された空隙等のそれぞれに空気室が形
成されるため、この可撓性膜堰02の長手方向および可
撓性膜11i02の上流側内壁の周方向に設けられたス
ペーサーSによって形成される空隙のそれぞれの空気室
に充填空気が残存する。このため、この空気室に残存す
る空気による浮力が可撓性膜堰02の水中重量より上ま
わることにより、可撓性膜堰02を強制的に倒伏され難
く、可撓性膜堰02は水中に浮遊する。Therefore, even if the flexible membrane dam 02 is evacuated and laid down 14, there is still a large amount of water inside the flexible membrane dam 02 as shown in FIG. 6(C). The inner chamber upper portion C of the flexible membrane dam 02 is deformed and curved within the range of the flexible membrane curvature, and the flexible membrane is formed by stacking and bonding two sheets, and the curvature of the flexible membrane is The junction part is deformed and curved within the range of , and the flexible @membrane j [! i02 is folded together and a gap is formed around the top part E formed within the range of the curvature of the flexible membrane dam 02 or the spacer S provided on the inner wall of the flexible membrane dam 02. Since an air chamber is formed in each of the spaces, each air chamber is formed by the spacer S provided in the longitudinal direction of the flexible membrane dam 02 and in the circumferential direction of the upstream inner wall of the flexible membrane 11i02. Filling air remains. Therefore, the buoyant force of the air remaining in this air chamber exceeds the underwater weight of the flexible membrane weir 02, making it difficult for the flexible membrane weir 02 to be forcibly collapsed, and the flexible membrane weir 02 becomes underwater. Floating on.
;l、 、 −、’l るた のニー1よ゛よびコ
(r)ため、本発明は、このような難点を克服した新規
の可撓性膜堰に係り、下流側に水位のある河川を横断し
、可撓性膜の両側縁を離して河床部に固定し空気の給、
排出により起立、倒伏する可撓性膜堰において、前記可
撓性膜の両側縁に挟まれた河床部表面を、該両側縁と平
行な方向に指向した凸条面および凹条面の・いずれか一
方または両方に形成したことにより、前記可撓性膜堰の
倒伏時、前記可撓性膜堰の起立する前記可撓性膜を、前
記河床部表面の凸条面および凹条面のいずれか一方また
は両方に形成された前記河床部周長の合計周長が前記可
撓性膜の周長を収めて前記可撓性膜を水中に浮遊させる
ことなく、完全に倒伏させることができる。Therefore, the present invention relates to a new flexible membrane weir which overcomes these difficulties, and which is suitable for rivers with a water level on the downstream side. across the river, separate both edges of the flexible membrane and fix it to the riverbed to supply air.
In a flexible membrane weir that rises and collapses due to discharge, the riverbed surface sandwiched between both side edges of the flexible membrane is covered with either a convex surface or a concave surface oriented in a direction parallel to the both side edges. When the flexible membrane weir is collapsed, the upright flexible membrane of the flexible membrane weir is formed on one or both of the convex and concave surfaces of the riverbed surface. The total circumference of the river bed portions formed on one or both of the riverbed portions accommodates the circumference of the flexible membrane, so that the flexible membrane can be completely laid down without being suspended in water.
児」L舅 以下、本発明に係る図示の実施例により説明する。child's father-in-law DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below using illustrated embodiments.
第1図は可撓性膜堰の河床部表面に凸条面を形成した第
1の実施例の倒伏過程を示すものであり、第1図(a)
において、1はコンクリート等で染法された河床部であ
り、該河床部1には、可撓性膜4の両側縁を離して前記
河床部1の固定ラインA、Bに固定された可撓性膜堰3
が空気の給、排出(抜気)により起立、倒伏可能に布設
されるとともに、前記可撓性膜4の両側縁に挟まれた河
床部1の表面に前記可撓性膜4の両側縁と平行な方向に
指向した複数の断面が半円形状の凸条面2をそれぞれ間
隔を有して形成されている。Figure 1 shows the lodging process of the first embodiment in which convex stripes are formed on the river bed surface of a flexible membrane weir, and Figure 1 (a)
, reference numeral 1 denotes a riverbed section dyed with concrete or the like, and on the riverbed section 1 there are flexible membranes fixed to fixed lines A and B of the riverbed section 1 with both side edges of the flexible membrane 4 separated. sexual membrane weir 3
are laid so that they can be raised and lowered by supplying and discharging air (ventilation), and on the surface of the river bed section 1 sandwiched between both side edges of the flexible membrane 4. A plurality of cross sections oriented in parallel directions are formed with semicircular convex stripes 2 spaced apart from each other.
また、前記少数の凸条面2の表面には、前記可撓性膜4
の下流側が固定ラインBで固定されながら平坦な河床部
1と前記凸条面2とを被覆延在して固定ラインAにて固
定されて袋状体の内室を形成している。かかる内室は、
前記可撓性膜堰3を起立させる際の空気室である。Further, the flexible film 4 is formed on the surface of the small number of convex stripes 2.
The downstream side of the bag is fixed by a fixed line B and extends to cover the flat riverbed 1 and the convex surface 2, and is fixed by a fixed line A to form the inner chamber of the bag-like body. Such an interior room is
This is an air chamber when the flexible membrane dam 3 is erected.
さらに、前記可撓性II!4の上流側内壁面に、前記可
撓性膜4の周方向のほぼ半周に亘ってスペー勺−8が添
接され、該スペーサーSは、前記可撓性膜4の一側縁方
向に指向する方向に複数ケ所隔置して備えられるととも
に前記可撓性膜堰3の充填空気を抜気して該可撓性膜堰
3を倒伏さけ゛る際、前記可撓性膜堰3の内室に空気通
路を形成する一手段としている。Furthermore, the flexibility II! A spacer 8 is attached to the upstream inner wall surface of the flexible membrane 4 over approximately half of the circumferential direction of the flexible membrane 4, and the spacer S is oriented toward one side edge of the flexible membrane 4. When the air filling the flexible membrane dam 3 is evacuated to prevent the flexible membrane dam 3 from collapsing, the flexible membrane dam 3 is provided with a This is a means of forming an air passage.
さらにまた前記可撓性膜堰3の内室下方隅部には、該可
撓性膜堰3内に給気もしくは前記可撓性膜堰3内を抜気
するための給、排出管5を備えている。Furthermore, at the lower corner of the inner chamber of the flexible membrane weir 3, there is provided a supply/exhaust pipe 5 for supplying air into the flexible membrane weir 3 or discharging air from the inside of the flexible membrane weir 3. We are prepared.
第1図(b)は、初期の抜気状態を図示した断面図であ
り、前記可撓性膜堰4は、抜気をはじめると固定ライン
△、Bの上方側が上下流側の水圧と充填空気の抜気によ
る減少に伴なってほぼ対称的にそれぞれ内方に弯曲しは
じめて弯曲変形した弯曲部(閉塞部)6.7を形成する
。第1図(C)ば倒伏状態を示す断面側面図であり、前
記可撓性膜4の内室の抜気が進むと、前記弯曲部6,7
は閉塞状態になるとともに、終局的には、前記凸条面2
は、前記可撓性膜堰3の起立した前記可撓性膜4が前記
河床部1の凸条面2すなわち前記可撓性膜4の両側縁と
平行な方向に指向して等間隔に設けられた複数の凸条面
(本実施例の場合は2条)2.2のほぼ中間点に対称に
指向してそれぞれ前記凸条面の周長と前記可撓性膜4の
両側縁に挟まれた前記河床部1の平面部との合81周長
に、前記可撓性膜4の閉塞する間の合計周面周長を前記
可撓性膜4の水中宙吊により収めるように形成している
。FIG. 1(b) is a sectional view illustrating the initial air evacuation state, and when the air evacuation starts, the upper side of the fixed line △, B is connected to the water pressure on the upstream and downstream sides, and the filling As the air decreases due to air evacuation, they begin to curve inward in a substantially symmetrical manner to form curved portions (occlusion portions) 6.7 which are curved and deformed. FIG. 1(C) is a cross-sectional side view showing the collapsed state, and as air is removed from the inner chamber of the flexible membrane 4, the curved portions 6, 7
becomes a closed state, and eventually the convex surface 2
The upright flexible membranes 4 of the flexible membrane dam 3 are oriented in a direction parallel to the convex stripes 2 of the river bed 1, that is, both side edges of the flexible membranes 4, and are arranged at equal intervals. A plurality of convex stripes (in this example, two stripes) 2.2 are symmetrically oriented at the midpoints thereof and sandwiched between the circumferential length of the convex stripes and both side edges of the flexible membrane 4, respectively. The flexible membrane 4 is suspended in water so that the total peripheral circumference of the flexible membrane 4 during the closed period is within the total circumference of the flat part of the river bed 1, which is 81. ing.
第1図に図示の第一実施例は前記したように構成されて
いるので、起立した前記可撓性膜堰3の充填空気を抜気
して前記可撓性膜4を倒伏させる際、前記可撓性膜堰3
は、水圧と抜気により閉塞を開始する前記可撓性膜4の
それぞれ対称弯曲部6.7が合掌状態に閉塞し、該弯曲
部(閉塞部)6.7の下方部分の前記可撓性膜4を前記
河床部1の平面部および凸条面2の周面に沿わせ、かつ
、前記可撓性膜4の余長を僅少にした状態で倒伏させる
ことができる。Since the first embodiment shown in FIG. 1 is constructed as described above, when the air filled in the upright flexible membrane dam 3 is evacuated and the flexible membrane 4 is collapsed, the Flexible membrane weir 3
The symmetrical curved portions 6.7 of the flexible membrane 4, which begin to close due to water pressure and air evacuation, are closed in a state of palms together, and the flexible membrane 4 in the lower portion of the curved portion (occlusion portion) 6.7 The membrane 4 can be laid down in a state in which the membrane 4 is aligned with the flat part of the river bed section 1 and the peripheral surface of the convex striped surface 2, and the remaining length of the flexible membrane 4 is minimized.
第2図は可撓性膜堰の河床部表面に凹条面を形成した第
二の実施例の倒伏過程を示すものであり、第2図(a)
において、10はコンクリート等で染法された河床部で
あり、該河床部10には、可撓性膜13の両側縁を離し
て前記河床部10の固定ラインA、Bに固定された可撓
性膜堰12が空気の給、排出(抜気)により起立、倒伏
可能に布設されるとともに、前記可撓性膜13の両側縁
に挟まれた前記河床部10の表面に前記可撓性膜13の
両側縁と平行な方向に指向し、かつ、前記可撓性膜13
の起立状態と反対方向に指向した弯曲形成の凹条面11
を設ける。Figure 2 shows the lodging process of a second embodiment in which grooved surfaces are formed on the river bed surface of a flexible membrane weir, and Figure 2 (a)
, reference numeral 10 denotes a riverbed section dyed with concrete or the like, and on the riverbed section 10 there are flexible membranes fixed to fixed lines A and B of the riverbed section 10 with both side edges of the flexible membrane 13 separated. A flexible membrane weir 12 is installed so that it can be raised and lowered by supplying and discharging air (air extraction), and the flexible membrane 12 is installed on the surface of the riverbed section 10 sandwiched between both side edges of the flexible membrane 13. The flexible membrane 13 is oriented in a direction parallel to both side edges of the flexible membrane 13 .
Concave surface 11 with a curved surface oriented in the opposite direction to the upright state of
will be established.
また、前記凹条面11の周面には、前記可撓性膜13の
下流側が固定ラインBで固定されながら前記凹条面11
を被覆延在して固定ラインAにて固定され、袋状体の内
室を形成している。かかる内室は、前記可撓性膜堰12
を起立さゼる際の空気室である。Furthermore, while the downstream side of the flexible film 13 is fixed to the peripheral surface of the grooved surface 11 with a fixing line B, the grooved surface 11 is
It covers and extends and is fixed at a fixing line A to form the inner chamber of the bag-like body. Such an inner chamber is formed by the flexible membrane dam 12.
It is an air chamber when standing up.
さらに、前記可撓性膜13の上流側内壁面に、該可撓性
膜13の周方向のほぼ半周に亘ってスベーリ−−8が添
接され、該スペーサーSは、前記可[真性膜13の一側
縁方向に指向する方向に?!2数ケ所隔置して備えられ
るとともに、前記可撓性膜堰12内の充填空気を抜気し
、該可撓性IIQ II 12を倒伏させる際、該可撓
性膜堰12の内室に空気通路を形成させる一手段として
いる。Further, a suberly 8 is attached to the upstream inner wall surface of the flexible film 13 over approximately half of the circumferential direction of the flexible film 13, and the spacer S is attached to the inner wall surface of the flexible film 13 on the upstream side. In the direction pointing towards one side edge of ? ! Two or more IIQ IIs are provided spaced apart from each other, and when the air filled in the flexible membrane dam 12 is evacuated and the flexible membrane dam 12 is laid down, the inner chamber of the flexible membrane dam 12 is This is a means of forming air passages.
ざらにまた、前記可撓性膜1[12の内室の上流側固定
ラインAの近傍に、前記可撓性膜@12の内室に給気も
しくは該可撓性膜堰12の内室を抜気するための袷、排
出管14を備えている。In addition, in the vicinity of the upstream fixed line A of the inner chamber of the flexible membrane 1[12, air is supplied to the inner chamber of the flexible membrane @12 or the inner chamber of the flexible membrane weir 12 is supplied. It is equipped with a sleeve for releasing air and a discharge pipe 14.
第2図(b)は、初期の抜気状態を図示した断面側面図
であり、第2図(b)において前記可撓性膜堰13は、
抜気をはじめると固定ラインA、Bの上方側が上下流側
の水圧と空気の換気による減少に伴なってほぼ対称的に
それぞれ内方に弯曲しはじめて弯曲変形した弯曲部(閉
塞部) 15.16を形成する。FIG. 2(b) is a cross-sectional side view illustrating an initial air removal state, and in FIG. 2(b), the flexible membrane dam 13 is
When air removal begins, the upper sides of fixed lines A and B begin to curve inward in a nearly symmetrical manner as the water pressure and air on the upstream and downstream sides decrease due to ventilation, resulting in a curved part (occlusion part).15. form 16.
第2図(C)は倒伏状態を示す断面図であり、第2図(
C,)において、前記可撓性膜13の内室の抜気が進む
と、前記弯曲部15.16は閉塞状態になるとともに、
終局的には、前記凸条面11は、前記可撓性膜13が該
可撓性膜13の両側縁と平行な方向に指向して形成され
た前記凹条面11の最深部位に相対的に指向し、かつ前
記四条面11の周面上に添接された前記可撓性膜13上
に沿いながら前記可撓性膜13の屈曲率の範囲内で屈曲
された頂部と上下流側の前記可撓性膜13.13の合掌
部分を残した周長を前記可撓性膜13の水中重量により
容易に収められるよう形成している。FIG. 2(C) is a sectional view showing the collapsed state, and FIG.
In C,), as the air in the interior of the flexible membrane 13 progresses, the curved portion 15.16 becomes closed, and
Ultimately, the convex surface 11 is relative to the deepest part of the concave surface 11 where the flexible film 13 is oriented in a direction parallel to both side edges of the flexible film 13. The top and upstream and downstream sides are bent within the range of the curvature of the flexible film 13 while along the flexible film 13 attached to the circumferential surface of the four-striped surface 11. The circumferential length of the flexible membrane 13, 13 excluding the palm-clasped portion is formed so that it can be easily accommodated by the weight of the flexible membrane 13 in water.
第2図に図示の第二実施例は前記したように構成されて
いるので、起立した前記可撓性膜堰12の充填空気を抜
気してml記可撓性膜13を倒伏させる際、前記可撓性
膜堰12は、水圧と抜気により閉塞を開始する前記可撓
性膜13のそれぞれ対称的な音曲部(閉塞部) Is、
16が合掌状態に閉塞し、該弯曲部(閉塞部) 15
.16の下方部分の前記可撓性膜13を前記河床部10
面に形成された前記凹条面11の周長に沿わせ、かつ、
前記可撓性膜13の余長を僅少にした状態で前記凹条面
11内に容易に落ち込ませて倒伏させることができる。Since the second embodiment shown in FIG. 2 is constructed as described above, when the air filled in the upright flexible membrane dam 12 is evacuated and the flexible membrane 13 is collapsed, The flexible membrane dam 12 is a symmetrical musical part (occluding part) Is of the flexible membrane 13 that starts to be closed by water pressure and air removal.
16 is closed in a state of palms together, and the curved part (occluded part) 15
.. The flexible membrane 13 in the lower part of the river bed 10
Along the circumference of the grooved surface 11 formed on the surface, and
The flexible membrane 13 can be easily lowered into the concave surface 11 and laid down with a small surplus length.
第3図は河床部に形成した四条面に2条の凸条面を備え
た第三の実施例の可撓性膜堰の倒伏過程を示すものであ
り、第3図(a)において、20はコンクリート等で染
法された河床部であり、該河床部20には、可撓性膜2
4の両側縁を離して前記河床部20の固定ラインA、B
に固定された可撓性膜1[123が空気の給、排出(抜
気)により起立、倒伏可能に布設されるとともに、前記
可撓性膜24の両側縁に挟まれた前記河床部20の表面
に前記可撓性膜24の両側縁と平行な方向に指向し、か
つ、前記可撓性膜24の起立状態と反対方向に指向した
弯曲形成の凹条面21と該凹条面21の周方向対称位置
に断面が半円形状の凸条面22とを組み合せして設ける
。Fig. 3 shows the lodging process of a flexible membrane weir of the third embodiment, which has four protruding protrusions and two convex protrusions formed on the river bed. is a riverbed section dyed with concrete or the like, and the riverbed section 20 is provided with a flexible membrane 2.
4 and fixing lines A and B of the riverbed 20.
A flexible membrane 1 (123) fixed to the riverbed section 20 is installed so that it can be raised and lowered by supplying and discharging air (ventilation), and the flexible membrane 1 [123] A grooved surface 21 having a curved surface oriented in a direction parallel to both side edges of the flexible membrane 24 and opposite to the upright state of the flexible membrane 24; A convex strip surface 22 having a semicircular cross section is provided in combination at symmetrical positions in the circumferential direction.
また、前記凹条面21および凸条面22とにより組み合
せして設けられたそれぞれの周面には、前記可撓性膜2
4の下流側が固定ラインBで固定されながら前記凹条面
21と凸条面22のそれぞれの周面を被覆延在して固定
ラインAにて固定され、袋状体の内室を形成する。かか
る内室は、前記可撓性膜堰23を起立させる際の空気室
である。In addition, the flexible film 2
The downstream side of the bag 4 is fixed by a fixing line B and extends to cover the respective peripheral surfaces of the concave striped surface 21 and the convex striped surface 22, and is fixed by a fixing line A, thereby forming the inner chamber of the bag-like body. This inner chamber is an air chamber when the flexible membrane dam 23 is erected.
さらに、前記可撓性膜24の上流側内壁面に、該可撓性
膜24の周方向のほぼ半周に亘ってスペーサ−8が添接
され、該スペーサーSは、前記可撓性膜24の一側縁方
向に指向する方向に複数ケ所隔置して備えられるととも
に、前記可撓性Il!堰23内の充填空気を抜気し、該
可撓性膜堰23を倒伏させる際、該可撓性膜堰23の内
室に空気通路を形成する一手段としている。Further, a spacer 8 is attached to the upstream inner wall surface of the flexible membrane 24 over approximately half the circumference of the flexible membrane 24, and the spacer S is attached to the upstream inner wall surface of the flexible membrane 24. The flexible Il! This is a means for forming an air passage in the interior of the flexible membrane dam 23 when the air filled in the dam 23 is evacuated and the flexible membrane dam 23 is collapsed.
さらにまた、前記可撓性膜堰23の内室の上流側固定ラ
インΔの近傍に、前記可撓性Il!堰23の内室に給気
もしくは該可撓性膜堰23の内室を抜気するための給、
排出管25を尚えている。Furthermore, the flexible film Il! Air supply to the inner chamber of the weir 23 or supply for venting the inner chamber of the flexible membrane weir 23;
The discharge pipe 25 is still attached.
第3図(b)は、初期の換気状態を図示した断面側面図
であり、第3図(b)において、前記可撓性膜堰24は
、抜気がはじまると固定ライン△。FIG. 3(b) is a cross-sectional side view illustrating the initial ventilation state. In FIG. 3(b), the flexible membrane dam 24 moves to the fixed line Δ when air removal begins.
Bの上方側が上下流側の水圧と空気の換気による減少に
伴なってほぼ対称的にそれぞれ内方に弯曲しはじめて弯
曲変形した弯曲部(閉塞部) 26.27を形成する。As the water pressure and air on the upstream and downstream sides decrease due to ventilation, the upper side of B starts to curve inward in a nearly symmetrical manner, forming a curved part (occlusion part) 26.27.
第3図(C)は倒伏状態を示′?lI断面側面図であり
、第3図(C)において、前記可撓性膜24の内室の抜
気が進むと、前記弯曲部26.27は開基状ffpにな
るとともに、終局的には、前記凹条面21の周面に対称
に形成された凸条面22のそれぞれの周面は、前記可撓
性膜24が該可撓性膜24の両側縁と平行な方向に指向
して形成された前記凹条面21の最深部位に相対的に指
向し、かつ前記凹条面21および凸条面22の周面上に
添接された前記可撓性膜24上に沿いながら前記可撓性
膜24の屈曲率の範囲内で屈曲された頂部と上下流側の
前記可撓性膜24゜24の合掌部分を残した周長を前記
可撓性膜24の水中重量により容易に収められるよう形
成している。Figure 3 (C) shows the collapsed state. 3(C), which is a sectional side view of FIG. 3, as the air in the inner chamber of the flexible membrane 24 progresses, the curved portions 26 and 27 become open base-like ffp, and eventually, Each circumferential surface of the convex striped surface 22 formed symmetrically with the circumferential surface of the grooved striped surface 21 is formed such that the flexible film 24 is oriented in a direction parallel to both side edges of the flexible film 24. The flexible film 24 is oriented relatively to the deepest part of the grooved surface 21 and attached to the circumferential surfaces of the grooved surface 21 and the convex surface 22. The circumferential length of the flexible membrane 24, which is bent within the range of the bending ratio of the flexible membrane 24 and the upstream and downstream sides of the flexible membrane 24°24, can be easily accommodated by the underwater weight of the flexible membrane 24. It is formed like this.
第3図に図示の第三実施例は前記したように構成されて
いるので、起立した前記可撓性膜堰24を例伏さじる際
、前記可撓性膜堰23は、水圧と抜気により閉塞を開始
する前記可撓性膜24のそれぞれ相対的な弯曲部(閉塞
部) 26.27が合掌状態に閉塞し、該弯曲部(閉塞
部) 26.27の下方部分の前記可撓性膜24を前記
河床部20面に形成された前記凹条面21および凸条面
22の組み合せ周長面に沿わせ、かつ、前記可撓性膜2
4の余長を僅少にした状態で前記凹条面21δよび凸条
面22の組み合せ周長面に容易に落ち込まけて倒伏させ
ることができる。Since the third embodiment shown in FIG. 3 is configured as described above, when the upright flexible membrane dam 24 is pressed down, the flexible membrane dam 23 is controlled by the water pressure and the air vent. The respective relative curved portions (occluded portions) 26 and 27 of the flexible membrane 24 that start to be occluded are closed in a state of palms together, and the flexible membrane 24 in the lower portion of the curved portions (occluded portions) 26 and 27 The membrane 24 is placed along the combined circumferential surface of the concave striped surface 21 and the convex striped surface 22 formed on the surface of the riverbed section 20, and the flexible membrane 2
With the remaining length of the groove 4 made small, it can be easily fallen onto the combined circumferential surface of the concave surface 21δ and the convex surface 22 and laid down.
第4図は河床部の凹条周面とこの凹条周面に落ち込む可
撓性膜の幅を同じ寸法に形成した可撓性膜の第四実施例
を示寸断面側面図であり、第4図(a)において、30
はコンクリート等で染法された河床部であり、該河床部
30には、同じ幅に截断された2枚の合掌した可撓性膜
33の両側縁を離して前記河床部30の固定ラインA、
Bに固定された可撓性膜堰32が空気の給、排出(抜気
)により起立、倒伏可能に布設される・とともに、前記
可撓性膜33の両側縁に挟まれた前記河床部30の表面
に前記可撓性11933の起立状態と反対方向に指向し
た弯曲形成の凹条面31を形成する。FIG. 4 is a sectional side view showing a fourth embodiment of a flexible membrane in which the width of the grooved circumferential surface of the river bed and the flexible membrane falling into the grooved circumferential surface are the same size; In Figure 4(a), 30
is a riverbed section dyed with concrete or the like, and a fixed line A of the riverbed section 30 is attached to the riverbed section 30 by separating both side edges of two flexible membranes 33 cut to the same width and having their palms joined together. ,
A flexible membrane weir 32 fixed to B is installed so that it can be raised and lowered by supplying and discharging air (air extraction). A curved concave surface 31 is formed on the surface of the flexible member 11933 in a direction opposite to the upright state of the flexible member 11933.
かかる前記凹条面31の周長は起立する前記可撓性膜3
3が倒伏変形する周長とほぼ同一寸法に形成される。The circumference of the grooved surface 31 is the same as that of the flexible membrane 3 that stands up.
3 is formed to have approximately the same dimension as the circumferential length of the lodging deformation.
また、前記凹条面31の周面には、一方の1枚の前記可
撓性膜33か周面に沿って布設され、他の1枚は一方の
1枚の前記可撓性膜33の両側縁に合掌して添接し、前
記河床部30の平面上の固定ラインA、Bにて固定され
、袋状体の内室を形成する。Further, on the circumferential surface of the grooved surface 31, one of the flexible membranes 33 is laid along the circumferential surface, and the other one is laid along the circumferential surface of the one flexible membrane 33. It is attached to both side edges with its palms together and fixed at fixing lines A and B on the plane of the river bed 30 to form an inner chamber of the bag-like body.
かかる内室は、前記可撓性膜堰32を起立させる際の空
気室である。This inner chamber is an air chamber when the flexible membrane dam 32 is erected.
さらに、6a記可撓竹膜33の内壁面には、前出の第一
ないし第三実流例と同様にスペーサーSを、前記可撓性
膜33の内室にも前出の第一ないし第三の実施例と同様
に空気を給、排出(抜気)するための給、排出管34が
それぞれ添接もしくは備えられ、該スペーサーSおよび
給、排出管34は前出の第一ないし第三の実m例と実質
的に差異はないのでその作用の説明を省略する。Further, spacers S are provided on the inner wall surface of the flexible bamboo membrane 33 described in 6a in the same manner as in the first to third actual flow examples described above, and spacers S are provided in the inner chambers of the flexible membrane 33 as well. Similarly to the third embodiment, supply and discharge pipes 34 for supplying and discharging air are respectively attached or provided, and the spacer S and the supply and discharge pipes 34 are connected to the first to third embodiments described above. Since there is no substantial difference from the third example, a description of its operation will be omitted.
第4図(b)は可撓性膜堰32の倒伏状態を示す断面側
面図であり、第4図(b)において、前記可撓性IFJ
33内室の抜気の最終段階では、起立した前記可撓性膜
33は、前記一方の1枚が前記凹条面31に添接された
前記可撓性膜33の周面に沿って落ち込んで合掌した倒
伏状態を形成する。FIG. 4(b) is a cross-sectional side view showing the collapsed state of the flexible membrane dam 32, and in FIG. 4(b), the flexible IFJ
33 In the final stage of venting the inner chamber, the upright flexible membrane 33 falls down along the circumferential surface of the flexible membrane 33, one of which is attached to the grooved surface 31. Form a prostrate state with your palms clasped together.
第3図に図示の第四実施例は前記したように構成されて
いるので、起立した前記可撓性膜33を倒伏させる際、
前記可撓性膜33の倒伏変形される周長が前記凹条面3
1の周長とほぼ同一に形成されていることにより、起立
していた前記可撓性膜33を前記凹条面31に添接した
一方の前記可撓性膜33上に合掌した状態の前記可撓性
11Q33.33を形成して倒伏されるため、起立して
いた前記可撓性膜33に余長を余すことなく安定した状
態で倒伏できる。Since the fourth embodiment shown in FIG. 3 is constructed as described above, when the upright flexible membrane 33 is brought down,
The circumferential length of the flexible membrane 33 to which the flexible membrane 33 is deformed is the concave surface 3.
1, the flexible membrane 33 which was standing upright is attached to the concave surface 31, and the flexible membrane 33 is placed on one of the flexible membranes 33 with its palms together. Since the flexible membrane 33 is laid down while forming the flexible film 11Q33.33, it can be laid down in a stable state without leaving any extra length on the flexible membrane 33 that had been upright.
第5図は二列固定形式可撓性膜堰の河床部平面上の可撓
性膜上に凸条面を形成する構造部材を備えた第一実施例
の変形例を示すものであり、第5図において、40はコ
ンクリート等で染法された河床部、41は可撓性膜の両
側縁で挟まれた河床平面部、42は可撓性膜堰、43は
可撓性膜堰42の可撓性膜、45は可撓性膜43の両側
縁で挟まれた可撓性膜43の表面に該可撓性膜の両側縁
に平行に指向して載置し接着固定された2条の断面円形
のバイブ(鉄製、または硬質樹脂製〉等の構造部材であ
り、該構造部材45を前記河床平面部41上の前記可撓
性膜43の内室表面に載置し、固定した以外は第1図に
示す第一の実施例と実質的に差異はないので、その構成
および作用の説明を省略する。FIG. 5 shows a modification of the first embodiment in which a structural member is provided to form a convex strip on the flexible membrane on the plane of the river bed of a two-row fixed type flexible membrane weir. In Fig. 5, 40 is a river bed dyed with concrete, etc., 41 is a flat river bed sandwiched between both edges of the flexible membrane, 42 is a flexible membrane weir, and 43 is a riverbed portion of the flexible membrane weir 42. The flexible membrane 45 has two strips placed and adhesively fixed on the surface of the flexible membrane 43 sandwiched between both side edges of the flexible membrane 43 in parallel to both side edges of the flexible membrane. is a structural member such as a vibrator (made of iron or hard resin) with a circular cross section, and the structural member 45 is placed on the inner surface of the flexible membrane 43 on the river bed plane part 41 and fixed. Since there is no substantial difference from the first embodiment shown in FIG. 1, the explanation of its structure and operation will be omitted.
前出の第2図および第3図に図示し説明を加えた前記河
床部10.20の前記可撓性膜の両側縁で挟まれた凹条
面11.21は前記可撓性膜堰12.23が倒伏する際
、前記可撓性膜堰12.23の座高が高い状態のときは
、前記凹条面11.21の深さを調整して該凹条面11
.21の周長を長く形成することが好ましい。The concave surface 11.21 sandwiched between both side edges of the flexible membrane of the river bed section 10.20, illustrated and explained in FIGS. 2 and 3 above, is the flexible membrane weir 12. When the flexible membrane weir 12.23 is in a high sitting height, the depth of the grooved surface 11.21 is adjusted and the height of the grooved surface 11.23 is lowered.
.. It is preferable to form the circumferential length of 21 to be long.
また、前記可撓性膜堰3.12.23.32.42のそ
れぞれが河川を横断して布設され、かつ、前記可撓性膜
4 、13.24.33.43の端側縁により挟まれる
両岸の法面(図示されず)にも前記可撓性膜4゜13、
24.33.43の両側端縁と平行な方向に指向した凸
条面2または凹条面11の如き凸条面または四条面を形
成して前記法面に添接される前記可撓性膜4.13.2
4.33.43の両側端部の可撓性膜(図示されず)を
前記凸条面に沿わせて倒伏させるかあるいは前記四条面
に落ち込ませて倒伏させることが好ましい。Further, each of the flexible membrane weirs 3.12.23.32.42 is laid across the river, and is sandwiched between the end side edges of the flexible membranes 4, 13.24.33.43. The flexible membrane 4゜13,
24.33.43 The flexible membrane is attached to the slope by forming a convex surface or four-striped surface such as the convex surface 2 or the concave surface 11 oriented in a direction parallel to both side edges of 43. 4.13.2
It is preferable that flexible membranes (not shown) at both ends of 4.33.43 be laid down along the convex striped surfaces or depressed on the four striped surfaces.
え泗Jと弧里
このように本発明では、可撓性膜堰の可撓性膜の両側縁
に挟まれた前記河床部表面を、該両側縁と平行な方向に
指向した凸条面J3よび凹条面のいずれか一方または両
方に形成したので、起立した前記可撓性膜堰の可撓性膜
を、前記凸条面および凹条面のいずれか一方または両方
に形成した周長面に収めながら倒伏されるため、前記可
撓性膜堰の可撓性膜が水中に浮遊して河川の流れを阻害
することなく、倒伏座高を低くまたは完全に落ち込まぜ
ることができ、このため下流側の水位が高い防潮堰等に
おいても河川の流れを容易にした完全倒伏の可撓性膜堰
を確保することができる。As described above, in the present invention, the river bed surface sandwiched between both side edges of the flexible membrane of the flexible membrane weir is provided with a convex strip surface J3 oriented in a direction parallel to the both side edges. The flexible membrane of the flexible membrane weir is formed on one or both of the convex and concave surfaces, so that the flexible membrane of the flexible membrane weir is formed on one or both of the convex and concave surfaces. Since the flexible membrane of the flexible membrane weir does not float in the water and obstruct the flow of the river, the lodging height can be lowered or completely lowered. Even in tide protection weirs and the like where the water level on the downstream side is high, it is possible to ensure a fully collapsed flexible membrane weir that facilitates the flow of rivers.
第1図は本発明に係る第一実施例の可撓性膜堰の倒伏過
程を示す断面側面図、第2図は本発明に係る第二実施例
の可撓性膜堰の倒伏過程を示す断面側面図、第3図は本
発明に係る第三実施例の可撓性膜堰の倒伏過程を示す断
面側面図、第4図は本発明に係る第四実流例の可撓性膜
堰の起立、倒伏状態を示す断面側面図、第5図は、第1
図の変形例を示す断面側面図、第6図は従来の可撓性膜
堰の倒伏状態を示す断面側面図である。
1・・・河床部、2・・・凸条面、3・・・可撓性膜堰
、4・・・可撓性膜、5・・・給、排出管、6.7・・
・弯曲部(閉塞部)、
10・・・河床部、11・・・凹条面、12・・・可撓
性膜堰、13・・・可撓性膜、14・・・給、1ノ1出
管、15.16・・・弯曲部(閉塞部)、
20・・・河床部、21・・・凹条面、22・・・凸条
面、23・・・可撓性膜堰、24・・・可撓性膜、25
・・・袷、排出管、26.27・・・弯曲部(閉塞部)
、
30・・・河床部、31・・・凹条面、32・・・可撓
性膜堰、33・・・可撓性膜、34・・・給、初出管、
40・・・河床部、41・・・河床平面部、42・・・
可撓性膜堰、43・・・可撓fi膜、45・・・8i造
部材、△、B・・・固定ライン、S・・・スペーサー。FIG. 1 is a cross-sectional side view showing the lodging process of a flexible membrane weir according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional side view showing the lodging process of a flexible membrane weir according to a second embodiment of the present invention. 3 is a sectional side view showing the lodging process of a flexible membrane weir according to a third embodiment of the present invention, and FIG. 4 is a sectional side view showing a flexible membrane weir according to a fourth actual flow example according to the present invention. Fig. 5 is a cross-sectional side view showing the standing and lying states of the
FIG. 6 is a cross-sectional side view showing a modification of the figure, and FIG. 6 is a cross-sectional side view showing a conventional flexible membrane weir in a collapsed state. DESCRIPTION OF SYMBOLS 1... Riverbed part, 2... Convex stripe surface, 3... Flexible membrane weir, 4... Flexible membrane, 5... Supply and discharge pipe, 6.7...
・Curved part (occlusion part), 10... Riverbed part, 11... Concave surface, 12... Flexible membrane weir, 13... Flexible membrane, 14... Supply, 1 no. 1 outlet pipe, 15.16... curved part (occlusion part), 20... riverbed part, 21... concave stripe surface, 22... convex stripe surface, 23... flexible membrane weir, 24...Flexible membrane, 25
...Sleeve, discharge pipe, 26.27...Curved part (occluded part)
, 30... River bed section, 31... Concave surface, 32... Flexible membrane weir, 33... Flexible membrane, 34... Supply, initial pipe, 40... River bed section , 41... Riverbed flat part, 42...
Flexible membrane weir, 43... Flexible FI membrane, 45... 8i structural member, Δ, B... Fixed line, S... Spacer.
Claims (1)
離して河床部に固定し空気の給、排出により起立、倒伏
する可撓性膜堰において、前記可撓性膜の両側縁に挟ま
れた河床部表面を、該両側縁と平行な方向に指向した凸
条面および凹条面のいずれか一方または両方に形成した
ことを特徴とする可撓性膜堰。In a flexible membrane weir that crosses a river with water level on the downstream side, separates both edges of the flexible membrane, fixes it to the river bed, and raises and collapses as air is supplied and discharged, both sides of the flexible membrane are fixed to the riverbed. 1. A flexible membrane weir, characterized in that a riverbed surface sandwiched between the edges is formed into one or both of a convex surface and a concave surface oriented in a direction parallel to the both side edges.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22599185A JPS6286213A (en) | 1985-10-12 | 1985-10-12 | Flexible film dam |
GB8624248A GB2184150B (en) | 1985-10-12 | 1986-10-09 | Flexible sheet dam |
IT21966/86A IT1197381B (en) | 1985-10-12 | 1986-10-10 | DAM IN FLEXIBLE SHEET MATERIAL |
US06/918,441 US4836713A (en) | 1985-10-12 | 1986-10-14 | Flexible sheet dams |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22599185A JPS6286213A (en) | 1985-10-12 | 1985-10-12 | Flexible film dam |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6286213A true JPS6286213A (en) | 1987-04-20 |
Family
ID=16838079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22599185A Pending JPS6286213A (en) | 1985-10-12 | 1985-10-12 | Flexible film dam |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6286213A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100565401B1 (en) * | 2001-06-19 | 2006-04-03 | 최근호 | Water storage dam using river bed |
-
1985
- 1985-10-12 JP JP22599185A patent/JPS6286213A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100565401B1 (en) * | 2001-06-19 | 2006-04-03 | 최근호 | Water storage dam using river bed |
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