JPH0543009B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an underwater water conveying device, and particularly to an underwater water conveying device that can quickly discharge pollution-causing water flowing into a storage pond and prevent pollution of stored water. Regarding water conveyance equipment.

[Conventional technology]

In order to secure water resources and provide a stable supply, reservoirs such as dams and lakes have been established. Reservoirs have functions for flood control and water utilization, such as storing inflow water and providing an appropriate supply of stored water. The water stored in this reservoir should be clean water, but there is a problem with the contamination of the stored water due to the inflow of various types of wastewater. The polluting waters that cause the contamination of stored water include industrial wastewater, agricultural chemicals, domestic wastewater, and polluted water from floods. In other words, in recent years, due to eutrophication due to industrial wastewater, agricultural chemicals, and organic matter such as nitrogen and phosphorus in domestic wastewater flowing into the reservoir, a large amount of floating phytoplankton has grown near the dam body, causing the stored water to grow. This not only pollutes the water and impairs the water purification function, but also may cause discomfort to users. Also,
Polluted water containing earth and sand flows into reservoirs due to floods, landslides, etc., and may remain there for long periods of time, polluting the stored water.

Therefore, in the past, the growth of plankton was suppressed and
In order to reduce water temperature, a circulation device is used to circulate the upper and lower water in the reservoir to lower the water temperature, or a filtration device or chemicals are used to remove dirt, dust, plankton, etc. contained in the water by filtration and sterilization. The company took measures such as: In addition, in order to prevent the contamination of stored water due to floods, inflow water was directly discharged during floods.

[Problem that the invention seeks to solve]

However, plankton removal using conventional equipment requires high costs for installation and replacement of filter media, and is complicated to maintain. Removal using chemicals requires the use of stored water as drinking water. In some cases, considering the conventional effects on the human body, there is an inconvenience that is extremely dangerous. In addition, due to continuous drainage of inflow water during floods,
Not only is it impossible to prevent contamination of the reservoir water, but there is also the disadvantage of causing a decrease in the reservoir water.

[Purpose of the invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to realize an underwater water guiding device that can promptly discharge the water that causes the contamination of the reservoir water that flows into the reservoir, and can prevent the contamination of the reservoir water.

[Means for solving problems]

In order to achieve this object, the present invention is characterized in that a water conduit is formed by an impermeable membrane-like material in the water from the upstream reservoir pollution-causing water inlet to the downstream reservoir water intake.

[Effect]

According to the structure of the present invention, by forming a water conduit with an impermeable membrane-like body in the water from the upstream reservoir pollution-causing water inlet to the downstream reservoir water intake, the upstream reservoir pollution-causing water can be formed. Pollution-causing water flowing into the reservoir from the water inlet can be guided to the water inlet and quickly discharged.

〔Example〕

Next, embodiments of the present invention will be described in detail based on the drawings.

1 to 6 show embodiments of this invention. In Figure 1, 2 is the dam body, 4 is the ground, 6 is the reservoir, 8 is the water intake, 10 is the intake channel, 1
2 is a discharge port. A reservoir 6 formed by the dam body 2 and the ground 4 on both sides is connected to rivers 14, 14 that serve as headwaters. The water stored in this reservoir 6 flows into the intake channel 10 from the water intake port 8,
Water is discharged from the discharge port 12. In addition, this water intake 8
may not be provided on the dam body 2, but may be provided on the ground 4 or on a separately installed water intake tower.

The underwater water conveying device 16 according to the present invention has an impermeable membrane installed in the water from the inlet 18 of pollution-causing water in the first river 14 connected to the reservoir 6 on the upstream side to the water intake 8 of the reservoir 6 on the downstream side. The shaped body 20 forms a water conduit 22 .

That is, as shown in FIG. 2, by securing the shape with the holder 24, the water impermeable membrane 20 forms a water conduit 22 having a substantially U-shaped cross section. As shown in FIGS. 3 to 6, the holders 24 include a square frame-shaped holder 24-1, a gate-shaped holder 24-2, a substantially U-shaped holder 24-3, and a ladder-shaped holder. 24-4 etc., each of these shapes of holders 24-1 to 24-
4 are appropriately selected and combined to form the water conduit 22.
The non-water permeable membrane body 20 has a floating body 26 attached to its upper end and a weight 28 attached to its lower end, and an inlet 30 of the water conduit 22 is opened at the inlet 18 of the cargo-causing water by means of a rope body 32 and an anchor 34, and the water is guided. Waterway 2
Two outlets 36 are provided at eight water intake ports by means of cables 38 and anchors 40.

In this way, by forming the conduit 22 from the pollution-causing water inlet 18 to the water intake 8 using the impermeable membrane-like body 20, the pollution-causing water flows into the reservoir 6 from the pollution-causing water inlet 18 on the upstream side. Pollution-causing water can be guided to the water intake port 8.

Thereby, polluted water containing soil caused by industrial wastewater, floods, etc. that flows into the reservoir 6 and causes pollution can be quickly discharged from the water intake port 8.

Therefore, by promptly discharging the inflowing pollution-causing water, it is possible to prevent eutrophication due to industrial wastewater and the like, suppress the growth of plankton, and prevent pollution of the stored water. Further, it is possible to prevent contamination of stored water due to the inflow of contaminated water containing earth and sand during floods and the like. This makes it possible to supply clean water that does not contain plankton, sediment, or the like.

By the way, the water level of the reservoir 6 fluctuates depending on the amount of inflow water and the amount of water intake. In order to prevent the installation position of the submersible water guide device 16 from shifting due to the vertical movement of the water level, it is supported by the following support structure.

As shown in Figs. 7 and 8, the water conveyance device 16
The auxiliary floating bodies 44, 44 are connected to the floating bodies 26, 26 by connecting cables 42, 42, respectively, and the reservoir 6
Anchors 48, 48 are sunk into the bottom 46 of. One end of the cable bodies 50, 50 is connected to the anchors 48, 48, and the middle of each cable body 50, 50 is connected to the auxiliary floating bodies 44, 4.
4 to be slidably supported in the extending direction by supports 52, 52 such as pulleys, and each rope body 5
Auxiliary weights 54, 54 are connected to the other ends of the 0, 50, respectively.

In this way, one end of the cable bodies 50, 50 supported slidably in the extension direction on the auxiliary floating bodies 44, 44 is connected to the anchors 48, 48, respectively, and the auxiliary weights 50, 50 are connected to the other end, respectively. Due to the lowering of the water level of the stored water as shown in FIG.
2, 52, the cable bodies 50, 50 are connected to the auxiliary weights 50,
At the same time, as shown in FIG. 7, as the level of the stored water moves upward, the cables 50, 50 are pulled in to the auxiliary weights 50, 50 side via the supports 52, 52. Therefore, the cable bodies 50, 50 are always maintained in a tensioned state, so that the underwater water guiding device 1
It is possible to prevent the installation position of No. 6 from moving due to the vertical movement of the water level. This prevents the shape of the water conduit 22 from changing due to the movement of the installation position, and the inlet 30 and outlet 36
It is possible to prevent positional fluctuations and maintain the water guiding function.

9 and 10 show another embodiment of the support structure for the underwater water guiding device 16. In this support structure, one end of each cable body 50, 50 is connected to the anchors 48, 48, respectively, and the other end is connected to form a single auxiliary weight 50. In this way, by connecting the other ends of each cable body 50 and 50 to connect a single auxiliary weight 50, each cable body 5
0 and 50 can be made equal without being unequal, it can appropriately follow the vertical movement of the water level and prevent the installation position from shifting, and the water conveyance function can be maintained more reliably. can.

Note that the shape of the water conduit 22 is not limited to this embodiment, and may be U-shaped or V-shaped in cross section.

Further, regarding the shape of the inlet 30 side and the outlet 36 side of the water conduit 22, as shown in FIG.
0 is provided with an inlet side widening part 56 that expands toward the upstream side by the impermeable membrane-like body 20, and an outlet side that expands toward the downstream side by the impermeable membrane-like body 20 at the outlet 36. An enlarged portion 58 may also be provided. These inlet side enlarged portion 56 and outlet side enlarged portion 5
8, a floating body 26 and a weight 28 are respectively attached.

The amount of pollution-causing water flowing into the water conduit 22 can be adjusted by the expanded state and expanded state of the inlet side expanded portion 56. In addition, dam body 2
When the amount of water taken in from the water intake port 8 is large and a strong negative pressure acts on the water impermeable membrane 20 of the water conduit 22, the outlet 36 is
buffered by the amount of pollution-causing water flowing out from the
It is possible to reduce the negative pressure acting on the water-impermeable membrane-like body 20, and it is possible to avoid adding large resistance to the water-impermeable membrane-like body 22, which is advantageous in terms of strength.

In addition, the inlet side enlarged part 56 and the outlet side enlarged part 58
The water-impermeable membrane-like body 20 constituting the pump can be further extended or shortened as appropriate depending on the increase or decrease in the flow rate. In addition, depending on the application, the inlet side widening part 56 and the outlet side widening part 58 have an opening of a required size that allows water to pass through while preventing the floating substances contained in the water from passing through. It can also be formed from a water-permeable membrane-like body made of a woven fabric.

Note that the underwater water guiding device 16 according to the present invention
The system quickly discharges water causing pollution, but it is also possible to take in and supply fresh water from the upstream side without mixing it with the polluted water stagnant in the reservoir. Also, the transfer of oil by sea vessels (landing, etc.)
Preventive measures such as oil fences are taken to prevent oil spills during accidents and ship accidents. However, these measures have only been able to encircle the area. By using this water-impermeable membrane as a fire-resistant and heat-resistant membrane band,
It can be guided from the surrounding area to enable fire extinguishing and processing in a safe area. This also applies in the event of a spill of poisonous substances or powerful drugs, and can prevent the spread of damage caused by contamination with surrounding water.

〔Effect of the invention〕

As described above, according to the present invention, a water conduit is formed by an impermeable membrane in the water from the upstream reservoir water inlet to the downstream reservoir water intake. It is possible to guide pollution causes flowing into the reservoir from the water inlet into the reservoir and quickly discharge them.

Therefore, by quickly discharging the inflowing pollution-causing water, it is possible to prevent eutrophication due to industrial wastewater and the like, suppress the growth of plankton, and prevent pollution of the stored water. Further, it is possible to prevent the contamination of stored water due to the inflow of polluted water containing earth and sand during floods and the like.
This makes it possible to supply clean water that does not contain plankton, sediment, or the like.

[Brief explanation of the drawing]

1 to 6 show embodiments of the present invention, and the first
The figure is an explanatory view of the installation of the underwater water conveyance device, FIG. 2 is a perspective view of the water conduit, and FIGS. 3 to 6 are perspective views of the holder, respectively. FIGS. 7 and 8 are explanatory cross-sectional views at a high water level and a low water level, respectively, showing the support structure of the underwater water guiding device. Nos. 9 and 10 are cross-sectional explanatory views at a high water level and a low water level, respectively, showing another support structure of an underwater water guiding device. FIG. 11 is a perspective view of the underwater water guiding device provided with an inlet side widening part and an outlet side widening part. In the figure, 2 is the dam body, 4 is the ground, 6 is the reservoir, 8 is the water intake, 14 is the river, 16 is the underwater conveyance device, 18 is the inlet of pollution-causing water, 20 is the non-permeable membrane, 22 is a water conduit, 24 is a holder, 26
is a floating body, 28 is a weight, 30 is an inlet, 36 is an outlet, 4
4 is an auxiliary floating body, 48 is an anchor, 50 is a cable body, 52
is a support, 54 is an auxiliary weight, 56 is an entrance side expansion part,
Reference numeral 58 denotes an outlet side enlarged portion.

Claims (1)

[Claims] 1. An underwater water conveyance device characterized by forming a water conduit using an impermeable membrane in the water from an upstream reservoir pollution-causing water inlet to a downstream reservoir water intake.