JP2015169068A - Construction structure of marine surge-wave utilizing sea water storage power generation facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power generation device which is safe to Tsunami and a large-scale typhoon, can take measures for drift sand and drifts, and can constantly utilize a marine surge wave.SOLUTION: A deposit of drift sand is prevented by positioning a coastal flow and a marine water drainage direction. As treatment for drifts, there is taken a two-stage method which installs a drainage gate 17 at a reinforced concrete construction part which enters a land side of a V-shaped pier, returns the drifts to the sea, and returns small fishes to the sea from a storage pool. A sea bottom gradient is set at 7° in average between 5° and 10° while sequentially narrowing a pier width by utilizing a surge of a long wave, and marine surge-wave seat water is stored in a land-side storage pool, and used as power generation source energy source sea water. A coastal line part copes with local corrosion by setting a large-diameter No.2 harbor-type steel pipe 9 as a coastal line corrosion block pile, and continuously installing a one-meter diameter steel pipe pile against the corrosion of a land facility part.

Description

Technology field

Japan has the sixth largest sea area in the world, and we think that the use of ocean energy should be further developed. The power generation system in the ocean has been activated as much as possible all over the world. Although it is considered that development related to wave power in the field is expected, we are experimenting with development, but coastal beach use, fishing rights, management jurisdiction issues, relaxation of authorization process, etc. are the current development issues We are conducting experimental development.

The relationship between the tsunami and the wave height related to the coastal topographic structure of the Sanriku Coast has been newly confirmed in the upcoming Great East Japan Earthquake and the ocean swell waves are constantly rushing to the coast even in the absence of wind. A V-shaped jetty was constructed in the V-shaped bay, and a structure was constructed from the sea side to the land side with a certain slope, and the seawater was lifted and stored in a reservoir constructed on the land side utilizing the natural power of ocean energy. This is the technical background of generating electricity in the process of draining seawater into the sea through open channels while fish farming. .

The first problem is whether the underwater structure can withstand tsunamis and large typhoons, the second problem can cope with burial caused by drifting sand, how to deal with drifting objects, the third problem can always use swell waves, There were issues such as countermeasures against coastal erosion

Means to solve the problem

For the first, considering the implementation experience to date and the Great East Japan Earthquake, perform planned construction as shown in the attached plan view and cross section,
The second problem of drifting sand is to solve the problem by orienting the coastal flow at the tip of the V-shaped jetty and the drainage discharge direction after power generation as shown in the attached figure.
As for the third issue, as shown in the plan view and cross-sectional view, the V-shaped bay is artificially constructed with a constant gradient, the rising seawater is divided into 10m and 15m, and the reservoir structure is constructed with the upper and lower two tiers. The facility construction was made so that the intake of rising water in response to changes in swell waves was secured and power generation was possible at all times. ,
Regarding the fourth issue, the coastline will install a large-diameter No. 2 harbor type steel pipe up to 45m for erosion blocking piles, and a steel pipe with a diameter of 1m will be continuously installed as shown in the plan view for other land side erosion.

Embodiment of the Invention

As the shape of the V-shaped jetty, the sea area width was narrowed sequentially, the shape of the slope increasing from the sea side to the land with a constant slope was reduced to 1/1000, and the water tank experiment was conducted. An angle of 15 ° to 22.5 ° from the line to the sides, and a seabed slope of 5 ° to 10 ° with an average 7 ° slope, creating a swell wave 3 times higher than the water depth V We conducted a fracture test of stability against the wave force of the U-shaped jetty, stored rising water in the storage tank and discharged it, ascertained the relationship between the receiving capacity of the storage tank and the rising water cycle, and the amount of drainage, flow velocity, etc. From experiment to implementation design construction

Effect of the invention

In accordance with the present invention, a swell wave with large ocean energy is guided into a V-shaped bay and the swell wave is increased to 10-15 m by gradually narrowing the width of the V-shaped jetty and increasing it toward the land. By generating electricity as a power source for the system, the economic effect of supplying electricity is great. Especially, the installation location is suitable for dredging areas, so there is little trouble for fishers and the right to fish in the reservoir. It can be given to fishermen's associations and returned to the local community.

Construction structure of seawater storage power generation facility using ocean swell wave Construction structure of seawater storage power generation facility using ocean swell wave

1. Coastline and erosion-preventing coastal cut-off piles (large-diameter No. 2 harbor-type steel pipe, depth 45 m)
2. Erosion prevention pile (diameter 1m, depth 30m)
3, center line 4, 0 point (the origin of jetty opening)
5. Seabed position 200m offshore 6. Seabed slope (gradient with the seabed position 200m offshore and horizontal starting from the sea)
7. Reservoir (upper 80m x 150m, depth 10m, lower 80m
(150m wide, 10m deep)
8. Triangular weir with large slides (upper two places, lower two places)
9, large-diameter No. 2 harbor-type steel pipe 10, average tide level 11, coastal flow diversion (large-diameter No. 2 harbor-type steel pipe 3 rows depth 50m)
12. V-shaped seabed in the bay (large stone paved)
13. Drainage gate in case of emergency (left side toward the V-shaped concrete frame land)
14. Emergency reservoir drain gate)
15, Large screen (Concrete body part rise 15m part slot)
16. Open channel (drainage with power generator from reservoir to sea)
17. Open water channel exit sluice 18 from the reservoir to the sea, backflow prevention sluice 19 and concrete frame part drainage outlet 2 steps (10m and 15m exit)
20, caisson (10m x 20m x 10m)
21, power generator

Claims (8)

  A point that is 50 m from the coastline to the land is defined as 0 point, and the center line extends 250 m from the position perpendicular to the coastline to the sea, and the shape is open from 15 ° to 22.5 ° on both sides of the centerline. A U-shaped jetty was constructed, and the bottom depth was adjusted to 250 m in the sea while narrowing the width and leveling the bottom with a gradient of 7 ° on average, ranging from 5 ° to 10 ° to the land from the bottom at 250 m in the tip of the jetty. It is claimed that the marine swell wave is raised to the land side and stored in a storage pond as a power source for fish farming and power generation.   Seawater is raised to the reservoir with a slope of 7 ° (upper reservoir 80m x 150m x 10m, lower reservoir 80m x 150m x 19m) and stored in the reservoir, and the upper and lower slidable large triangular weirs And a construction structure that can control the power source of the power generator by draining while adjusting the amount of stored water.   The V-shaped jetty structure has a large-diameter No. 2 port-type steel pipe built on both sides of the caisson, and a plurality of sea-side tip as shown in the attached figure. The large-diameter No. 2 harbor type steel pipe will be constructed in two rows, the V-shaped jetty bay seabed will be constructed with a large stone structure, and a certain distance will be placed at the tip of the seaside jetty tip as shown in the attached figure. No. 2 port-type steel pipes are arranged in consideration of the flow direction of the coastal flow and drainage, and a construction structure that can prevent inflow of driftwood floating material (jellyfish), sand drift, drifting material in V-shaped bay is claimed. To   In order to prevent erosion during tsunamis and typhoons on the coastline, erosion prevention blocking pile large caliber No. 2 harbor type steel pipes are installed twice to a depth of 45m, and the land side is surrounded by steel pipes with a diameter of 1m. This is the scope of claims. Coastal line erosion blockage A construction structure with an emergency drainage gate on the left side toward the land at the point 30m to 40m from the sea side to the land side can discharge and release floating materials such as driftwood, jellyfish and fish Further, the construction structure is defined as a construction structure in which suspended matter that has entered the reservoir can be discharged and discharged from the lower reservoir through the water gate. The reinforced concrete frame structure from the coastline cut-off pile installation position to the drainage outlet that entered 125m into the land divides the ocean swell seawater in the jetty bay into two, one is raised to 10m and stored in the reservoir, the other is raised to 15m It is a claim that a construction structure that can be used as a constantly generating power source is a system that can be stored in two stages in a reservoir.   The construction structure in which a large screen is obliquely installed at the inlet of the drainage system up to 15 m of the rising water of the reinforced concrete frame up to the drainage outlet and the suspended matter is led to the drainage gate is claimed.   An open channel is provided between the reservoir and the sea, and a construction structure with multiple rotary power generators attached is installed. A drainage gate is provided in the open channel at the reservoir outlet, and multiple generators are installed at the sea end. A construction structure with a backflow prevention sluice is claimed.

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