JPH11303048A - Stair type water stop facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stair type water stop facility capable of reducing construction cost required for the construction work, shortening the construction period, simplifying the structure, reducing the weight of main equipment and materials used for the facility thereby permitting the transport of materials required easily to a river mouth (inlet of running water) located at a high elevation in a mountain so that it is hardly restricted by the place of installation. SOLUTION: This is a stairway type water stop equipment 1 to dam up a running water outlet portion 2 in a reservoir portion 51. Thus, a pair of levee walls 3, 3 made of reinforced concrete facing each other are constructed with an upward slope from the downstream side to the reservoir portion 51 at the upstream side with a predetermined clearance between the levee walls, a plurality of interrupting walls 6 to 10 with the height increased sequentially from the downstream side to the reservoir portion 51 at the upstream side between the levee walls 3, 3 with a constant distance provided between neighboring walls, and water stop is controlled at the running water inlet portion 2 in such a manner that water is stored full in the neighboring interrupting walls 6 to 10 at the downstream side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stopping device for damping a water outlet in a stepwise manner in a reservoir such as a dam or a regulating pond which requires water use and flood control. The present invention relates to a simple type of water stop device for stopping water flow, stopping water, and providing a reservoir such as a dam or regulating pond upstream of the water stop.

[0002] Generally, river capacity is generally referred to as a flood control capacity or a water use capacity by a dam or a weir. However, in order to increase the water holding capacity of a river, a mutual name such as a flood control capacity or a water use capacity is used. It is necessary that the balance be increased, and the present invention
The present invention relates to a water stop device required for storing water in a river or the like, which poses a problem to be solved for such a point.

[0003]

2. Description of the Related Art In a water reservoir such as a dam provided in the middle of a river, a blocking wall made of concrete or the like is formed at a water outlet, and a so-called rigid body is used to block the water outlet to store water. It was a common water stopping means. Dams that are conventionally used for both flood control purposes and water use purposes are usually provided with such rigid water stopping means.

[0004]

However, in the case where the water is blocked by the above-mentioned conventional water stopping means to store water in a river or the like, enormous construction costs are required and the construction time is long. There's a problem.

[0005] The present invention has been made in view of the above points, firstly, to reduce the construction cost required for the construction, secondly, to shorten the construction period, and thirdly, to simplify the structure. It is an object of the present invention to provide a staircase type water stop device which can easily transport necessary materials to a river region or a water outlet in a hinterland, and which is not easily restricted by a water stop place, by reducing main constituent materials of the equipment. .

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a staircase type water stopping device according to the present invention is a water stopping device for damping a flowing water outlet portion in a stepwise manner in a reservoir such as a dam or a regulating pond. A pair of reinforced concrete levee walls opposed to the outlet port are sloping upward from the downstream side to the upstream water storage section and are erected at a predetermined distance, and are erected from the downstream side between the levee walls. A plurality of barriers whose heights are increased stepwise over the water reservoir on the side are provided at a certain distance between the adjacent barriers, so that the downstream barrier adjacent between the barriers is filled with water. The water is stopped at the water outlet by storing water.

According to the staircase type water stopping device having the above structure, the water pressure acting on the upstream vertical surface and the downstream water pressure acting on the upstream vertical surface and the downstream vertical surface of one of the blocking walls are reduced. The difference from the water pressure acting on the vertical surface on the side is proportional to the difference in the depth of water in contact with the both surfaces, so that the number of the barrier walls is increased and the pitch of the barrier walls is narrowed to thereby reduce the pitch of the adjacent barrier walls. By reducing the height difference between them, the required supporting strength of the blocking wall is greatly reduced, and the structure can be simplified. As a result, it is possible to deviate from the conventional concept of the barrier wall into a very simple configuration, reduce the materials required to construct the barrier wall, significantly reduce the construction cost, and shorten the construction period. It becomes possible.

According to a second aspect of the present invention, each of the blocking walls is
A flexible waterproof sheet, and a long floating bag body integrally attached to an upper end of the waterproof sheet; a lower end of the waterproof sheet is fixed to a water bottom of the water outlet; Can be fixed to the embankment wall, respectively.

According to the staircase type water stopping device of the second aspect,
Since each of the barrier walls is composed of a flexible waterproof sheet and a long floating bag attached to the upper end of the waterproof sheet, any of them can be folded and transported in a small volume, thereby reducing transport costs. At the same time, the material of the blocking wall can be easily transported to a mountain area or a river area in the middle of a mountain where a large truck is difficult to pass. In addition, after constructing a pair of reinforced concrete levee walls, the lower end of the waterproof sheet is fixed to the bottom of the river, etc., and both sides of the waterproof sheet are fixed to the levee wall. If you fix it on the embankment, it will end. Therefore, work other than construction of the embankment will be completed in a relatively short period of time. After the construction is completed, it is sufficient to fill the space between the waterproof sheets at the same time to fill them up. According to the structure of this staircase type water stop device, since the water pressure of the height corresponding to the difference in water level with the adjacent waterproof sheet acts on each waterproof sheet, it is sufficient if the waterproof sheet has sufficient strength to support it. is there. In addition, since both the waterproof sheet and the floating bag body have flexibility, and the water stored between the waterproof sheets is usually in a stationary state, it is sufficient that the water has sufficient strength to hold the above water pressure. This is because most of the water stored in the adjacent upstream waterproof sheet (excluding the water equivalent to the difference in adjacent water levels) is affected by the water pressure from the water stored in the downstream waterproof sheet for the submerged portion below the waterproof sheet. part)
This is because the load acting on the waterproof sheet is canceled.

As an example of a means for fixing the waterproof sheet, there is a pull cord. Generally, as the external force that the waterproof sheet is most likely to receive, the largest external force is caused by the water pressure in the direction from the pressure receiving surface on the upstream side to the pressure receiving surface on the downstream side of the waterproof sheet, but as a fixing means for opposing it, A lock fitting for locking one end of the rope is provided on the pressure receiving surface on the upstream side of the waterproof sheet, an anchor is buried in the bottom of the water storage, and a rope is provided between the lock for the rope and the anchor on the bottom of the water storage. Tighten by. By tightening the rope, the waterproof sheet that is pushed by water pressure and tends to fall in the downstream direction can be held in a substantially vertical upright posture.

[0011] According to a third aspect of the present invention, the lowermost (downstream) blocking wall can be formed of a rigid body of reinforced concrete.

[0012] According to the staircase type water stopping device of the third aspect,
Unlike the other barriers, the lowermost barrier does not have a water reservoir for supporting the load on the downstream side, so that the water can be reliably supported by being formed of a rigid reinforced concrete body.

According to a fourth aspect of the present invention, in the reservoir, a pair of reinforced concrete side walls facing from the water outlet are sloping downward symmetrically with respect to the reinforced concrete embankment wall and stand up at a predetermined distance. It is desirable to provide a plurality of barriers, each having a gradually reduced height, between the sidewalls in the reservoir with a certain distance between adjacent barriers.

[0014] According to the staircase type water stop device of the fourth aspect,
Even if the water in the reservoir is reduced or drought due to drought, etc., and the bottom of the reservoir is exposed, the water between the multiple barriers provided symmetrically on the reservoir balances, Multiple barriers between the walls are prevented from falling to the upstream side (reservoir side with reduced water). The means according to this configuration includes:
This is particularly effective for water use.

According to a fifth aspect of the present invention, it is preferable that a water level control device capable of individually adjusting the water level of each of the stored water is provided between the adjacent blocking walls.

According to the staircase type water stopping device of the fifth aspect,
For example, when the barrier is obstructed and needs to be repaired or replaced, the water level can be filled or lowered by a water level control device after the barrier is repaired. Therefore, not only maintenance can be performed particularly easily, but also a small amount of water leakage can be dealt with, so that the embankment can always be kept in a safe balance.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a staircase type water stopping device according to the present invention will be described below with reference to the drawings.

FIG. 1 is an overall perspective view showing an example in which a staircase type water stop device according to an embodiment of the present invention is mainly applied to a dam for water use.
FIG. 2 is a sectional view taken along the line AA of FIG. 3, showing a step-type water stop device having the same structure as that of the embodiment of FIG. 1 and having a shorter distance in a direction perpendicular to the dam axis (width direction). It is a top view which shows the stair-type water stop device of this.

As shown in FIG. 1, a part of the dam 51 is originally a river, and is formed by cutting off a part of the river with the staircase type water stop device 1 of this embodiment. A pair of levee walls 3 are formed at a predetermined distance from the flowing water port 2 so that their heights gradually decrease toward the downstream side. The embankment walls 3 are formed of reinforced concrete.

As shown in FIG. 2, a pair of embankments 3
Reference numeral 3 denotes a pair of side walls 4 extending symmetrically in a direction perpendicular to the axis of the dam centering on the uppermost position in the vicinity of the water outlet 2 and also extending toward the reservoir. For this reason, when the bank wall 3 and the side wall 4 which are continuous in series are viewed from the side, they are formed in a mountain shape. And, the lowermost barrier between the embankment walls 3.3 and the lowermost barrier wall 6, 2 of the side walls 4.4
Numeral 6 is made of reinforced concrete with a convex cross section.
Alternatively, it is provided integrally with the side wall 4. 2 and in the example of FIG. 1, the simple type of blocking walls 7 to 10 (1) having flexibility in the upstream of the lowermost blocking wall 6.
3) is provided. Also, from the water outlet 2 to the inside of the water storage unit, there are provided simplified simplified blocking walls 27 to 30 (33) between the side walls 4 and 4 symmetrically with the blocking walls 7 to 10 (13). The barriers 7 to 10.27 to 30 are
For example, a waterproof sheet 14 made by twisting and weaving using a tough fiber such as carbon fiber or polyamide fiber, and further subjected to a waterproofing process, and a long floating bag integrally attached to the upper end of the waterproof sheet 14 And body 15. Floating bag 15
In addition to the method of filling with air, a structure in which a foam is divided and filled into a bag body, for example, in a short dimension to maintain flexibility may be used.

As shown in FIG. 2, the water bottom 5 is leveled flat and solidified with concrete, or is shaved in the case of rock mass. After the reinforced concrete embankment wall 3 and the side wall 4 are erected on the leveled water bottom 5, the lower end of the waterproof sheet 14 is fixed to the water bottom 5 by driving an anchor (not shown), and the lower end of the waterproof sheet 14 is fixed. Between the parts is tightened with a rope (not shown) or the like. On the other hand, both sides of the waterproof sheet 14 are fixed on the embankment walls 3.3
A vertical mounting groove (not shown) is formed in advance, and a locking tool (not shown) is provided in the mounting groove (not shown).
And a corresponding locking device (not shown) is attached to the waterproof sheet 14, and both sides of the waterproof sheet 14 are inserted into the mounting grooves (not shown) so that the locking device (not shown) is inserted. (Not shown). A watertight structure is provided between each waterproof sheet 14 and the water bottom 5 and the bank wall 3 or the side wall 4 to prevent water leakage.

For fixing both sides of the floating bag body 15, locking members (not shown) are attached to the bank wall 3 and the side wall 4 in advance, and locking members or ropes are attached to both sides of the floating bag body 15. In the same manner as the waterproof sheet 14, both sides of the floating bag body 15 are fixed to the locking members of the bank wall 3 and the side wall 4.

The mode of use of the staircase type water stopping device 1 according to the embodiment configured as described above will be described. Water is taken from the river using a pump, and is taken between the lowermost barrier wall 6 and the upstream barrier wall 7 and between the lowermost barrier wall 26 and the barrier wall 2.
7, between the blocking walls 7 and 8, between the blocking walls 8 and 9, between the blocking walls 27 and 28, between the blocking walls 28 and 29, between the blocking walls 9 and 10, And between the blocking walls 29 and 30, and between the blocking walls 10 and 30, respectively. In this way, as shown in FIG. 2, a blocking wall for preventing the outflow of water is formed at the position of the water outlet 2, and the water is stored on the upstream side of the river to become the dam 51 as shown in FIG. 1. .

FIG. 4 is a front view of a water stop device showing a case where a water stop device according to another embodiment of the present invention is mainly applied to a water reservoir 61 for water use. The water stop device 1 of this embodiment is basically common to the water stop device 1 according to the above-described embodiment. The difference is that a flood spout 41 is provided near the water stop device 1 when the reservoir 61 becomes full and overflows with water. For this reason, during the rainy season or heavy rain, the reservoir 6
Even when 1 is full, the water does not overflow from the water stop device 1, so there is no possibility that the water stop device 1 may be collapsed. For this purpose, the height of the weir 42 of the spillway 41 is set slightly lower than the water stop device 1. Other configurations are the same as those of the above-described embodiment, and thus the same reference numerals are used for the common components, and the description is omitted.

FIG. 5 is a front view of a water stoppage device showing a case where the water stoppage device according to the third embodiment of the present invention is applied to a flood control dam (also referred to as a regulating pond in a small scale) 71. When viewed from the front, the water stop device 1 'of the present example has water outlets 72h and 73.
h, 74h, 75h, and 76h are different in that they are open, and others appear to be common to the water stop device 1 of the reservoir 61 in FIG. 4, but the specific structure is shown in FIGS. Different as shown. That is, the embankment walls 3 ′ and 3 ′ are erected at a predetermined distance, but the embankment wall 3 has a substantially right triangle shape as viewed from the side as shown in FIG.
Side vertical end faces, the lowermost to uppermost barrier walls 6 to 10
Water inlets 72a, 73a, 74a, 75a, 76a are provided at positions corresponding to the highest heights of the respective 30s, and water outlets 72h, 73h, 74 communicating with the respective water inlets.
h, 75h, and 76h are open at the frontmost position, and the water passages 72 to 7 extend horizontally from the water inlets 72a to 76a into the bank wall 3 horizontally.
6 are formed. Each of the water channels 72 to 76 is drilled to the front end position of the corresponding one of the blocking walls 6 to 10 corresponding to the height thereof, and faces the water storage point between the blocking walls as shown in FIGS. Water outlets 72b-72f, 73b-73
e, 74b-74d, 75b-75c, 76b are drilled in the direction orthogonal to the respective water channels 72-76. In addition, the place where the flood spout 41 is provided in the vicinity of the water stop device 1 'is also common to the second embodiment.

The lowermost barrier wall 6 of the barrier walls 6 to 10/30 is made of a rigid body made of reinforced concrete, and the other barrier walls 7 to 10/30 are made of a waterproof sheet 14.
And the place formed by the long floating bag body 15 is common to each of the above embodiments, but for the blocking walls 7 to 10.30,
The difference is that each waterproof sheet 14 moves up and down along the bank wall 3 according to the change in the water level together with the floating bag body 15. For this reason, a guide (not shown) that guides both sides of the waterproof sheet 14 in the vertical direction is provided so that the waterproof sheet 14 can move smoothly. In addition, the floating bag body 15 is not fixed to the bank wall 3,
It can be moved up and down in response to changes in water level. However, the lower end of the waterproof sheet 14 is firmly fixed to the water bottom 5 with an anchor or the like so that water does not leak from the gap between the waterproof sheet 14 and the water bottom 5. Also, the waterproof sheet 14
Can move up and down with respect to each bank wall 3 ', but the waterproof sheet 14 has a watertight structure so that water does not leak between the bank wall 3'.

The operation of the water stopping device 1 'constructed as described above will be described. In FIGS. 6 to 8, when the water level of river water or rainwater flowing into the flood control dam (or regulating pond) 71 is low, Water inlet 72a at bottom position
Water that flows out of the water outlet 72h through the water channel 72 but cannot flow out of the water outlet 72h is discharged from each of the water outlets 72b to 72h.
From f, it flows into the water storage location between the adjacent blocking walls 6 to 10.30. As a result, all the blocking walls 6 to 10.30 have the height of the first step (the lowest step) in FIG. 8A.

When the flow rate of river water, rainwater, or the like flowing into the flood control dam (or regulating pond) 71 increases, two
Each water outlet 73 through the water channel 73 from the th water inlet 73a.
From b to 73e, the water flows into the water reservoir between the adjacent blocking walls 7 to 10.30. And the floating barriers 7 to 10
30 is the height of the second step in FIG. 8 (b).

When the flow rate of river water, rainwater, or the like flowing into the flood control dam (or regulating pond) 71 further increases, the water outlets 74 b to 74 d are adjacent to the third water inlet 74 a from the lowest position through the water channel 74. 8 to 10 ・ 30
It flows into the storage area between them. And the floating barrier 8 ~
10.30 is the height of the third step in FIG. 8 (c).

When the flow rate of river water, rainwater, or the like flowing into the flood control dam (or regulating pond) 71 further increases, the water outlets 75 b to 75 d pass through the water channel 75 from the fourth water inlet 75 a from the lowest position. Adjacent barrier 9 ・ 10 ・
It flows into the water storage area between 30. Then, the floating barriers 9, 10, and 30 have the height of the fourth step in FIG. 8D.

When the flow rate of river water, rainwater, or the like flowing into the flood control dam (or the regulating pond) 71 further increases, the water outlet 76 b adjacent to each of the water outlets 76 b through the channel 76 from the fourth water inlet 76 a from the lowest position. The water flows into the water reservoir between the blocking walls 10 and 30. Then, the height of the floating blocking walls 10 and 30 is the fifth (uppermost) level in FIG. 8E.

As described above, in the water stoppage device 1 'applied to the flood control dam (or regulating pond) 71 of the present embodiment, the flood control dam (or regulating pond) depends on the amount of rainfall during a rainy season or a typhoon. 7
As the amount of water in 1 increases, a plurality of barriers 6 to 10
30 rises with the water level and stops automatically. FIG.
In the state of (e), when the water level of the flood control dam (or the regulating pond) 71 further rises, overflowing water flows out of the spillway 41. On the other hand, if there is no rainfall or the like for a long time and the amount of water in the flood control dam (or regulating pond) 71 decreases, the height gradually decreases from the uppermost barrier 10 or 30 as the water level decreases. By doing so, it is possible to secure river maintenance water even when the amount of water in the river is small.

Although the embodiment of the water stopping device of the present invention has been described above, the present invention can be carried out as follows. That is, as the water level of the flood control dam (or regulating pond) 71 as shown in FIG.
A water supply / drainage pipe (not shown) and a water supply / drainage pump (not shown) are provided between each of the blocking walls 6 to 10 and 30 in place of the structure for inflowing and storing water between the 30s, thereby forcibly controlling the water level. You may do so.

[0034]

As is apparent from the above description,
The water stopping device according to the present invention has the following excellent effects.

(1) According to the first aspect of the present invention, the height difference between adjacent barrier walls is reduced by narrowing the pitch of the plurality of barrier walls, and the load of water stored on the upper part of one barrier wall is reduced. By reducing the weight, the structure of the barrier can be simplified, so that the existing concept of the barrier can be deviated to a very simple configuration, and the materials required to construct the barrier are reduced. As a result, the construction cost can be greatly reduced, and the construction period can be greatly shortened.

(2) According to the second aspect of the present invention, since each blocking wall is made of a flexible waterproof sheet and a long floating bag attached to the upper end of the waterproof sheet, it is folded to have a small volume. Since it can be transported in a state, the transportation cost can be reduced, and the material of the blocking wall can be easily transported to a mountain area or a river area in a mountain where a large truck is difficult to pass.

In the construction at the site, after the construction of a pair of reinforced concrete levee walls, the lower end of the waterproof sheet is fixed to the bottom of a river or the like, and both sides of the waterproof sheet are fixed to the levee wall. The work will be completed if both sides are fixed to the embankment, so construction other than construction of the embankment will be completed in a relatively short time. After the construction is completed, water may be injected between each waterproof sheet at the same time to fill the area.

(3) According to the third aspect of the present invention, unlike the other barriers, the lowermost barrier does not have a water storage for supporting the load on the downstream side, so that the lowermost barrier is formed of a reinforced concrete rigid body. Thus, the water can be reliably supported.

(4) In the invention according to claim 4, when the water in the reservoir is reduced or drought due to drought or the like and the bottom of the reservoir is exposed, the reservoir is provided symmetrically on the reservoir side. Since the water storage between the plurality of barriers is balanced, the plurality of barriers between the bank walls are prevented from falling to the upstream side (toward the reduced water storage section).

(5) In the invention according to claim 5, for example, when the barrier is obstructed and needs to be repaired or replaced, the water level is controlled by the water level control device after the barrier is repaired, or the water level is increased. Because it is possible to lower the water level, not only the maintenance can be easily performed, but also it is possible to cope with a small amount of water leakage, so that the embankment can be always kept in a safe balance.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an example in which a staircase type water stop device according to an embodiment of the present invention is mainly applied to a water use dam.

2 shows a staircase type water stopping device having the same structure as that of the embodiment of FIG. 1 but shortening the distance in the direction perpendicular to the dam axis. FIG.
FIG. 3 is a sectional view taken along line A.

FIG. 3 is a plan view showing the staircase type water stopping device of FIG. 2;

FIG. 4 is a front view of a water stop device showing a case in which a water stop device according to a second embodiment of the present invention is mainly applied to a dam 61 for water use.

FIG. 5 is a front view of a water stop device showing a case where a water stop device according to a third embodiment of the present invention is applied to a flood control dam (or a regulating pond) 71.

FIG. 6 is a sectional view taken along the line BB of FIG. 7, showing the staircase type water stopping device of FIG. 5;

FIG. 7 is a plan view showing the staircase type water stop device of FIG. 6;

8 (a) to 8 (e) show flood control dams (or regulating ponds).
It is a side view sectional view showing in order a mode that the height of the cutoff wall of the water stop device rises stepwise with the rise of the water level of 71.

[Description of Signs] 1 ・ 1 ′ Water stop device 2 Flowing water port 3 Dyke wall 4 Side wall 5 Water bottom 6.26 Lowermost (fixed) barrier wall 7-10 ・ 27-30 Floating barrier wall 14 Waterproof sheet 15 Long floating bag 41 Flood spout 51.61.71 Reservoir (Flood control dam, regulating pond)

Claims (5)

[Claims] 1. A water stop device for damping a water outlet in a reservoir, such as a dam or a regulating pond, in a stepwise manner, comprising: a pair of reinforced concrete embankments opposed to the water outlet from an upstream side to a downstream side. A plurality of barriers, each of which has a stepwise height from the downstream side to the upstream side reservoir between the embankment walls, are erected upward at a predetermined distance between the barrier walls. A step-type water stopping device, wherein the water outlet is stopped by storing water so that a downstream blocking wall adjacent between the blocking walls is filled with water. . 2. Each of the blocking walls includes a flexible waterproof sheet and a long floating bag integrally attached to an upper end of the waterproof sheet, and a lower end of the waterproof sheet is connected to the water outlet. The staircase type water stopping device according to claim 1, wherein both sides of the waterproof sheet and both sides of the floating bag are fixed to the bank wall, respectively. 3. The staircase type water stop device according to claim 1, wherein the lowermost barrier wall is formed of a rigid body made of reinforced concrete. 4. In the reservoir, a pair of reinforced concrete side walls facing from the water outlet are inclined downwardly symmetrically with respect to the reinforced concrete levee wall, and are erected at a predetermined distance to stand between the side walls in the reservoir. The staircase type water stopping device according to any one of claims 1 to 3, wherein a plurality of blocking walls whose heights are reduced stepwise are provided at a fixed distance between adjacent blocking walls. 5. The water level control device according to claim 1, wherein a water level control device capable of individually adjusting the water level of each of the stored water is disposed between adjacent barrier walls. Staircase type water stop device.