JPH02210111A - Flexible diaphragm weir - Google Patents

Abstract

PURPOSE:To surely drain fluid in a diaphragm weir by setting one longitudinal spacer at least along the longitudinal direction, on the internal surface of the flexible diaphragm weir, and by setting one flexible periphery-directional spacer at least along the peripheral direction. CONSTITUTION:A rubber weir 1 made of a band-shaped rubber sheet mainly is fitted on the top surface 5a of river-bed concrete 5 and the slope face 6a of slope face concrete 6 in the river width direction, in the state of water-tightness. Air is fed into the rubber weir 1, and the rubber weir 1 is set in a rise state and when a valve fitted via a feed or exhaust pipe 10 is released, then the air in the rubber weir 1 is discharged into open air via the feed or exhaust pipe 10, and the rubber weir 1 starts shrinking. In this case, the central section 1a of the rubber weir 1 of low rigidity which is easily deformed starts falling downward with water pressure, and on the central section 1a, an upstream side section piece 2c comes in close contact with the downstream side section piece 2b of the band-shaped rubber sheet 2. A left bank section 1b and a right bank section 1c are separated from each other, and there, air in the right bank section 1c of the rubber weir 1 flows into the left bank section 1b via a spacer 11, and is discharged into the open air from the feed or exhaust pipe 10 opening to the left bank section 1b, and the right bank section 1c and the left tank section of the rubber weir 1 shrink in the same manner.

Description

DETAILED DESCRIPTION OF THE INVENTION LIL shellfish speck 1 The present invention is directed to the introduction of fluids such as air and water for agricultural water intake and seawater damming at river mouths.

This invention relates to a flexible membrane dam, commonly called a rubber dam, that expands and contracts as a result of discharge.

'''' Rainbow I In the rubber weir, as shown in Fig. 1, its - part is integrally attached to the river bed concrete 01 along the width direction of the river, and both ends of the rubber weir 03 are attached to the river slope concrete 02. It is installed in one piece, and one side of the slope is concrete 0.
When the fluid in the rubber weir 03 is discharged from the fluid supply/discharge port 04 of 2a and the rubber weir 03 is toppled, the pressure of water from the river or the like that has been dammed by the rubber weir 03 acts on the rubber weir 03.
As shown in Fig. 2, the rubber weir itself begins to lie down from the central part 03a in the river width direction, where it is most easily deformed, and the upper and lower surfaces of this central part 03a are in close contact with each other, and the rubber weir approaches both banks. Both end portions 03b and 03c are separated from each other.

Therefore, the fluid in the rubber weir side end 03b on the side where the fluid supply/discharge port 04 is open is discharged, but the other rubber weir side end 03c is in a sealed state, and the inside of this side end 03C is The fluid remains, and the rubber weir 03 cannot be completely collapsed.

In order to solve this problem at low cost, the special public
Rubber weir described in Publication No. 0290 (Figures 3 to 6)
(see figure).

In the conventional rubber weir O3 shown in FIGS. 3 to 6, the inner surface 03e of the rubber ring 03 near the anchoring part 03d of the rubber ring 03 anchored to the river bed concrete 01 has a river A spacer 05 is attached along the width direction, and this spacer 05
is made of a hollow hose that is rigid enough not to be blocked even by the pressure when the rubber ring 03 collapses, and even if the rubber weir central portion 03a is in close contact with the rubber weir both end portions 03b,
03c are communicated with each other by this spacer 05, so the rubber weir side end 0 on the side where the fluid supply/discharge port 04 is not opened
The fluid in 3c can also be discharged via this spacer 05.

However, in particular, the rubber ring 0 that introduced air into the rubber weir 03
3, due to the difference in specific gravity between the air in the top end 03f of the rubber ring 03 and the river water, the top end 03f rises as shown in FIG. At J, the rubber weir inner surfaces 03e are brought into close contact with each other to form an air remaining portion 03h, and the rubber ring 03 does not completely collapse.

That's it.

The present invention relates to an improvement of a flexible membrane weir that overcomes these difficulties.In the flexible membrane weir, which stands up when fluid is fed and collapses when it is discharged, there is a structure on the inner surface of the flexible membrane weir in its longitudinal direction. At least one longitudinal spacer is attached along the flexible membrane weir, and at least one flexible circumferential spacer is attached to the inner surface of the flexible membrane weir along its circumferential direction. be.

In the present invention, in a flexible membrane weir that rises when fluid is fed and collapses when fluid is discharged, the inner surface of the flexible membrane weir has at least 11 points along its longitudinal direction. At the same time, at least one flexible circumferential spacer is attached to the inner surface of the flexible membrane weir along its circumferential direction, so that when fluid is discharged from inside the flexible membrane weir, Even if the inner surfaces of the flexible membrane weir are partially in close contact with each other and a fluid residual portion is formed inside the flexible membrane weir due to the closed portion,
The spacer allows the fluid remaining portion to communicate with the fluid supply/discharge port.

In this way, in the present invention, the fluid residual portion formed inside the flexible membrane weir is communicated with the fluid supply/discharge port by the spacer, so that the fluid in the flexible Il weir is reliably It is evacuated and the flexible membrane weir is completely collapsed.

Further, in the present invention, the riverbed concrete or slope concrete on which the flexible membrane weir is laid does not require complicated piping for fluid discharge, so the cost is low and the construction period is short.

Dog-1-1 An embodiment of the present invention illustrated in FIGS. 7 to 10 will be described below.

A rubber ring 1, which is a type of flexible membrane weir, is watertightly attached to the top surface 5a of the river bed concrete 5 and the slope surface 6a of the slope concrete 6 in the river width direction.

The rubber ring 1 described above is made by impregnating raw rubber into a reinforcing layer made of one or more belt-like woven fabrics or fiber cords made of synthetic fibers, etc., and then folding the layers in half and superimposing them, and then vulcanizing and molding them. The main component is a belt-shaped rubber sheet 2.

Using such a band-shaped rubber sheet 2, a rubber ring 1 is laid on a river bed concrete 5 and a slope concrete 6 in the steps shown below.

First, as partially illustrated in FIG. 7, at both longitudinal ends 2a of the band-shaped rubber sheet 2 corresponding to the slope 6a of the slope concrete 6, both ends 3a of the overlapping side edge 3 are band-shaped. The rubber sheet 2 is cut diagonally toward the bent part 4, and the top surface 5a of the riverbed concrete 5 and the slope of the slope concrete 6 are cut with the overlapping side edge 3 of the band-shaped rubber sheet 2 positioned in the soil. 6a, a presser foot 7 is applied to the overlapping side edge 3 and the presser foot 7 to the anchor bolt 8 planted in the riverbed concrete 5 and the slope concrete 6.
are fitted, and the nut 9 is screwed onto the anchor bolt 8 and tightened.

Also, the supply air pipe 10 that penetrates the left bank slope concrete 6a
The distal end 10a of the pipe 10 is opened into the rubber dam 1, and the base end (not shown) of the supply/exhaust pipe 10 is connected to a blower (not shown) via a valve (not shown), and this valve is opened. By operating the blower with
The rubber 11 can be erected by blowing air into the rubber.

Further, a depression 5b is formed on the overlapping side edge 1113 of the rubber salt 1 and the top surface 5a of the river bed concrete 5 located downstream thereof.
is formed, and two steel pipes oriented in the longitudinal direction (river width direction) of the rubber salt 1 are formed on the inner surface (upper surface) of the downstream side piece 2b of the band-shaped rubber sheet 2 on the downstream side of the overlapping side edge 3. Furthermore, on the inner surface (lower surface) of the upstream piece 2C of the band-shaped rubber sheet 2, there are a number of spacers 12 made of rubber hoses oriented in the circumferential direction of the rubber salt 1 at predetermined intervals over the longitudinal direction of the rubber 1I11. Each hose is attached by a hose fixing band 13.

Since the embodiment shown in FIGS. 7 to 10 is constructed as described above, when air is introduced into the rubber weir 1 and the rubber salt 1 is erected, the air supply and exhaust pipe 10 is When the installed valve (not shown) is opened, the air in the rubber dam 1 is released into the atmosphere through the supply/exhaust pipe 10, and the rubber salt 1 begins to contract.

At this time, the central portion 1a of the rubber salt 1, which has low rigidity and is easily deformed, begins to collapse downward due to the water pressure of the river applied to the rubber salt 1, and the longitudinal central portion 1a of the rubber salt 1 forms a band-shaped rubber Even if the upstream part 2C is in close contact with the downstream part 2b of the sheet 2 and the left bank part 1b and right bank part 1C of the rubber salt 1 are separated, the spacer 11 connects them, so the rubber The air in the right bank portion 1C of the salt 1 flows into the left bank portion 1b via the spacer 11, and the air flows into the left bank portion 1b1. : It is released into the atmosphere from the open supply/exhaust pipe 10, and the right bank portion 1C of the rubber salt 1 can contract in the same way as the left bank portion of the rubber salt 1.

Further, the rubber salt 1 contracts, and as shown in FIG. 5, the upstream side piece 2C comes into close contact with the downstream side piece 2b of the band-shaped rubber sheet 2 at the widthwise central portion 1d of the rubber salt 1. The proximal end portion 10 and the apical end portion 1f of the rubber salt 1 are separated, and the apical end portion 1
Even if an air residual portion is formed at f, the spacer 12
The air in the top air residual bacteria portion 1f flows to the base portion 1e via the spacer 12, and passes through the gap formed by the spacer 11 to the left bank portion 1b.
The rubber salt 1 can completely collapse as it flows into the atmosphere and is discharged into the atmosphere.

Next, another embodiment of the present invention illustrated in FIGS. 11 to 15 will be described.

The rubber salt 1 of the embodiment shown in FIGS. 11 to 15 is constructed in the same way as the rubber salt 1 of the first embodiment shown in FIGS. 6 to 10.

However, in the first embodiment, the spacer 11 oriented in the longitudinal direction of the rubber salt 1 was made of steel pipe, but in this embodiment, the spacer 14 oriented in the longitudinal direction of the rubber salt 1 is a circumferential spacer of a rubber hose. Similar to 15, these are rubber hoses, and the spacers 14 and 15 are connected to each other through a hose connector 16, and the hose fixing band 1
Both ends 14a of every other spacer 14 attached to the inner surface of the downstream piece 2b of the band-shaped rubber sheet 2 at 7 and oriented in the longitudinal direction of the rubber salt 1 are oriented diagonally upward and are attached to the slope concrete 6. It is integrally attached to the slope 6a of the rubber dam 1 and opens into the rubber dam 1.

The second embodiment shown in FIGS. 11 to 15 is also similar to the first embodiment.
The same effects as in the embodiment can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a conventional rubber salt in a collapsed state, and FIG. 2 is a front view of the rubber salt at the stage of transition from an upright state to a collapsed state, as seen from the downstream side to the upstream side. Third
Figures 6 to 6 show the 57th Special Publication, which was an improved version of the conventional rubber salt.
A drawing showing the rubber salt described in Publication No. 40290,
Fig. 3 is a cross-sectional side view in the collapsed state, Fig. 4 is a front view in the upright state, Fig. 5 is a cross-sectional side view illustrating the state in which it cannot be completely collapsed, Fig. 6 is its plan view, 7 to 10 are drawings illustrating an embodiment of the flexible membrane weir according to the present invention, in which FIG. 7 is a partially cutaway perspective view showing the upright state, and FIG. 8 is a cross-sectional view thereof. , FIG. 9 is a cross-sectional side view showing the lying state, FIG. 10 is a front view at the stage of transition from the standing state to the lying state, and FIGS. 11 to 16 show other embodiments of the present invention. In the drawings, Fig. 11 is a partially cutaway perspective view showing the upright state, Fig. 12 is a cross-sectional side view thereof, Fig. 13 is a cross-sectional side view showing the completely collapsed state, and Fig. 14 is its cross-sectional side view. A perspective view of the main part, and FIG. 15 is an exploded perspective view thereof. DESCRIPTION OF SYMBOLS 1... Rubber salt, 2... Band-shaped rubber sheet, 3... Overlapping side edge, 4... Bent part, 5... River bed concrete, 6... Slope concrete, 7...・・Presser foot, 8・
... Anchor bolt 89... Nut, 1G... Supply and exhaust pipe, 11... Spacer, 12... Spacer,
13... Hose fixing band, 14... Spacer,
15...Spacer, 16...Hose connector,
17... Hose fixing band.

Claims (1)

[Claims] In a flexible membrane weir that rises when fluid is fed and collapses when fluid is discharged, at least one longitudinal spacer is attached to the inner surface of the flexible membrane weir along its longitudinal direction, and the flexible A flexible membrane weir, characterized in that at least one flexible circumferential spacer is attached to the inner surface of the membrane weir along its circumferential direction.