JPH0656007B2 - Ocean water conduit - Google Patents

Description

Detailed Description of the Invention

[Industrial applications]

TECHNICAL FIELD The present invention relates to an improvement of an ocean water guiding system capable of introducing seawater from the ocean to a discharge site without power.

[Prior art]

Conventionally, seawater is stored in a reservoir by utilizing natural waves of ocean water, and the potential energy of seawater generated by raising the seawater level in the reservoir to a level higher than that in the inner bay causes the water to pass through a water tunnel. An inland seawater metabolizer that discharges water into the inland sea by natural flow is disclosed in JP-A-54-12
No. 9731. Thus, the inner bay seawater metabolism device described in the publication is
An overtopping dam is provided on the outside sea side of a peninsula interposed between the inner bay and the outside sea so as to partly divide the outside sea, and the inside partitioned by the overtopping dam is a reservoir. Moreover, the overtopping bank is constructed at a height that allows natural waves of the open sea to overflow, and the seawater that has reached the peak level of the open sea can flow over the overtopping bank and store in the reservoir. Has been done. Thus, the seawater level in the reservoir is set to be higher than that in the inner bay, and the seawater in the reservoir is sent to the inner bay due to the difference in water level.

[Problems to be Solved by the Invention]

In the above-mentioned conventional example, on the open sea side, seawater in a wave height state is configured to be able to pass over the overtopping bank and be stored in the reservoir, so in order to store seawater in the open sea in the reservoir, It must be lowered. That is, when the height of the overtopping bank is high, the device does not function most of the time.
Further, the offshore wave collides with the overtopping breakwater, and the amount of water that breaks and breaks over the overtopping breakwater is only the splash portion of the wave, so that only a small amount of seawater can be stored, which is extremely inefficient. Furthermore, in order to allow the free fall of seawater through the headrace tunnel, a predetermined water level difference is required between the reservoir and the discharge site, but in the device described in this publication, the water level difference between the reservoir and the inner bay is required. It is not practical because the resistance of the water tunnel makes it difficult for water to flow. Therefore, in order to provide a reservoir having a sufficiently large water level difference with respect to the effluent, to further efficiently store the seawater of the open sea in the reservoir, and to allow the stored seawater to smoothly flow down to the effluent. Therefore, a technical problem to be solved arises, and an object of the present invention is to solve the problem.

[Means for Solving the Problems]

The present invention has been proposed in order to achieve the above-mentioned object, and stores seawater in a reservoir by utilizing natural wave of oceanic water, and further, by using the potential energy of the seawater in the reservoir, In a water-conducting device for open-sea water that is designed to naturally flow seawater through a water-conducting tunnel to a discharge site, on the open-sea (open-sea) side, a constriction bank for collecting waves is directed toward the open-sea direction. It is installed at an opening angle, and a slope for climbing waves is provided on the bottom surface of the inner side of the abutment from the seabed to the end of the abutment, and the reservoir is at the upper end side of the slope. The present invention provides an ocean water guiding device characterized by being provided on the land, and an ocean water guiding device which is provided underground and has an air vent hole.

[Action]

Rough waves rush toward the land in the open ocean. This rough wave is converged and amplified by a converging dam provided at a predetermined opening angle toward the open ocean, and further, a slope portion for crawling the wave on the inner bottom surface of the converging dam from the sea surface. Since it is provided up to the end of the bank, the waves converged on the bank will crawl to a high position on the slope. That is, due to the additional action of the abutment bank and the slope, the height of the incident wave rises to about 5 to 8 times. Furthermore, the offshore wave changed into a breaking wave at the crawling slope,
Wave energy is converted to flow energy and flows into high-level reservoirs on land. Therefore,
When the reservoir is installed underground in the land, a large amount of air also flows into the reservoir together with the seawater, and the air in the reservoir tends to be compressed, but the air is released into the atmosphere through the air vent hole. Therefore, it does not hinder the flow of the seawater. Thus, the reservoir can be directly installed on a land higher than the discharge place such as an inner bay, and the difference in water level between the seawater of the reservoir and the seawater of the discharge place can be made large. Therefore, the seawater in the reservoir flows into the discharge place extremely smoothly and efficiently under natural flow through the water guiding tunnel.

【Example】

An embodiment of the present invention will be described in detail below with reference to the attached drawings. FIG. 1 is a map showing an open sea 1 and an inner bay 2 which is an example of a discharge area. Generally, the inner bay 2 is much more polluted than the open ocean 1. Therefore, in FIG. 1, a water guiding tunnel 9 described later is opened between the open ocean 1 and the inner bay 2 in the central portion C of the cape 3 surrounding the inner bay 2 so that the purified water of the open ocean 1 is guided to the contaminated inner bay 2. To do. FIG. 2 is a sectional view taken along the line A-A in the central portion C of the cape 3, and FIG. 3 is a partially cutaway plan view of the same portion. In FIG. 2, the cape 3 converges on the ocean 1 side. Levees 4 and 4 are provided at an angle of about 90 ° toward the ocean. Further, a slope portion 5 for crawling waves is provided from the seabed 1a to the end portions 4a of the abutments 4, 4 on the inner bottom surfaces of the abutments 4, 4. Further, a water guiding portion 6 is continuously provided at a terminal end portion 4a of the slope portion 5, that is, an intersection portion of the aforesaid levee 4, 4.
Further, a tunnel-shaped reservoir 7 is provided in the cape 3 so as to be connected to the water conduit 6. The reservoir 7 may be provided on the ground so as to have an open surface. Further, when the reservoir 7 is formed in a tunnel shape, the reservoir 7 is provided with an air vent hole 8. Further, a water tunnel 9 is opened between the reservoir 7 and the inner bay 2. A cutoff dike 10 is provided on the inner bay 2 side, and the running water of the water guiding tunnel 9 flows into the cutoff dike 10. Thus, the angles and lengths and heights of the abutments 4, 4 or the angles of the slope of the slope 5 and the position of the upper end portion thereof, or the width of the water conduit 6 are individually determined depending on the place to be installed. It is possible to be determined by For example, an experiment was conducted by setting the angles of the abutments 4 and 4 to 90 ° and changing the width of the water guiding portion 6, and it was also found that the incident wave was generally amplified 4 to 8 times. By using the slope portion 5, the wave amplified by the abutment bank can be further amplified, and thus the wave of the open sea 1 can be carried to a high position without power. Therefore, the reservoir 7 is provided on the cape 3 so as to have a water level sufficiently higher than the seawater level of the inner bay 2. In this way, the seawater in the reservoir 7 can be discharged to the inner bay 2 by gravity flow. Therefore, the reservoir 7 and the inner bay 2 are communicated with each other by the water guiding tunnel 9 as described above.
Assuming that the diameter of the seawater is 2.6 m and the intake level of the open sea water is 3 m high, the maximum amount of seawater that can flow in the water guiding tunnel 9 is as follows. C: Pipe loss factor ≈ 0.5 A: Water tunnel cross section = π / 4 × 2.6 ² = 5.3 m ₂ h: Water level difference, if the water level in the inner bay is 0.5 m higher than the open ocean,
If the waves on the open ocean side are amplified by the converging bank and rise to a position 3 m higher, 3.0 m-0.5 m = 2.5 mg g = acceleration of gravity = 9.8 m / sec ^2, therefore, Q = 18. 55m ³ /sec≈1.600.000m ³ / day. Thus, the waves of the open ocean 1 are condensed in the converging dikes 4, 4 and amplified, and further amplified by the additive action with the slope 5 on the bottom surface, and the waves change into breaking waves, and the wave energy is changed. It is converted to flow energy and crawls up to the high-level water conduit 6.
When the reservoir 7 is swept into the reservoir 7 from the water guiding portion 6, and the reservoir 7 is formed in a tunnel shape,
A large amount of air flows into the reservoir 7 together with the seawater so that the air in the reservoir 7 is about to be compressed. However, since the air is released into the atmosphere by the air vent holes 8 provided in the reservoir 7, the seawater Smooth the inflow of water into the reservoir 7. Since there is a certain level difference between the water level of the reservoir 7 and the water level of the inner bay 2, a predetermined amount of seawater in the reservoir 7 will always flow freely into the inner bay 2 via the headrace tunnel 9. . Therefore, because the purified water of the open ocean 1 flows into the polluted inner bay 2, for example, a beach, a marine resort base,
It can be used for various purposes such as fish farming or connecting the water guiding tunnel 9 to an existing river to purify the river or purify the sea. In addition, seawater is made to flow from the reservoir to a predetermined location on land by a water guide tunnel, and the location is used as a beach, resort base,
Or it can be used for fish farms. In this case, a water tunnel will be provided to the river or sea to discharge seawater from the location. Further, this device can be provided at various places, and if a water turbine is installed in the water tunnel, it is possible to extract electric power or energy such as compressed air without power. It should be noted that the present invention can be variously modified within the scope not departing from the spirit of the present invention other than the above-mentioned embodiments, and the present invention naturally extends to the modified ones.

【The invention's effect】

The present invention, as described in detail in the above-mentioned embodiment, amplifies the waves of the open ocean when they are converged in the converging dam, and is further amplified by the addition action with the slope portion provided on the bottom surface of the converging dam. On the other hand, the waves turn into breaking waves, and the wave energy is converted into the energy of the flow and crawls to a high position, and then flows into a reservoir provided on the land. Therefore, the waves converged in the agitation bank do not invert, and the downward flow of water due to the inversion does not cause the upstream impediment of the next incident wave. Thus, when the reservoir is formed in the shape of a tunnel, air flowing into the reservoir is released into the atmosphere by the air vent holes provided in the reservoir, so that the inflow of seawater into the reservoir cannot be hindered. Absent. Thus, since it becomes possible to crawl the waves of the open ocean to a high position and store them in the reservoir, the seawater level of the reservoir at the high position is extremely high compared to the water level of the discharge site such as an inner bay. This is an invention that has an extremely significant effect such that the seawater stored in the reservoir can be constantly and naturally flowed into the discharge area.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a plan view showing an example of an installation place of the present apparatus, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. Is. 1 ... Open ocean (open sea), 2 ... Inner bay, 3 ... Cape, 4 ... Convergence bank, 5 ... Slope area, 6 ... Water transfer area, 7 ... Reservoir, 8 ... Air vent hole, 9 ... Water tunnel, 10 …… Deadline

Front Page Continuation (71) Applicant 999999999 Sumitomo Construction Co., Ltd. 13-4 Arakicho, Shinjuku-ku, Tokyo (71) Applicant 999999999 Daito Kogyo Co., Ltd. 1-38-6 Kameido, Koto-ku, Tokyo (71) Applicant 999999999 Taiyo Kogyo Co., Ltd. 4-8-4 Kigawahigashi, Yodogawa-ku, Osaka-shi, Osaka (71) Applicant 999999999 Civil engineering Takenaka Corporation 8-21-1 Ginza, Chuo-ku, Tokyo (71) Applicant 999999999 Toyo Construction Co., Ltd. 4-1-1 Koraibashi, Chuo-ku, Osaka-shi, Osaka (71) Applicant 999999999 Fujita Co., Ltd. 4-6-15-1 Sendagaya, Shibuya-ku, Tokyo (71) Applicant 999999999 Fudo Construction Co., Ltd. Hirano, Chuo-ku, Osaka-shi, Osaka 4-21, Machi (71) Applicant 999999999 Honma Gumi Co., Ltd. 3300 3 Minamicho, Nishiminato-cho, Niigata City, Niigata Prefecture (71) Applicant 999999999 3-2 Nishishinjuku, Shinjuku-ku, Tokyo No. 11 (71) Applicant 999999999 Rinkai Construction Co., Ltd. Tokyo Port 2-3-8 Shiba, Ku (72) Inventor Tadaharu Inoue 1-4-36 Takamihara, Kukizaki-cho, Inashiki-gun, Ibaraki (72) Inventor Tomoshi Morita 1-20-1 Sengen, Tsukuba-shi, Ibaraki (56) Reference References JP-A-54-129731 (JP, A) JP-A-62-244906 (JP, A) Actually developed JP-A-54-166134 (JP, U)

Claims (2)

[Claims] 1. A seawater is stored in a reservoir by utilizing natural waves of ocean water, and the potential energy of the seawater in the reservoir causes the seawater in the reservoir to naturally flow down to a discharge site through a headrace tunnel. In the ocean water guiding device configured as described above, on the open ocean (open sea) side, a constriction bank for collecting waves is installed at a predetermined opening angle toward the open ocean direction. An oceanic water conduit that is characterized in that a slope portion for crawling waves on the bottom surface of the slope is provided from the seabed to the end of the abutment, and the reservoir is provided on the land on the upper end side of the slope portion. apparatus. 2. The water transfer system for ocean water according to claim 1, wherein the reservoir is provided underground and has an air vent hole.