JPH072676Y2 - Partition membrane in coastal waters - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a partition membrane for a coastal sea area for partitioning a coastal sea area where water quality is deteriorated and purifying seawater in the partitioned coastal sea area by a natural purification action. It is about.

[Prior Art] Conventionally, as shown in FIG. 3, generally, in the coastal sea area 1 where the water quality is deteriorated, the coastal sea area 1 including the coast 2 is divided into sections such as concrete structures for use in leisure such as swimming. The water treatment facility is constructed near the coastal sea area 1 by partitioning the bank 3, the seawater in the interior 4 of the compartment is purified by the water treatment facility, and returned to the interior 4 of the compartment.

[Problems to be solved by the invention] By the way, in the coastal waters divided as described above, in order to construct a water treatment facility for purifying seawater,
In addition to the high cost, the running cost of this water treatment facility is high.

In addition, if the coastal sea area is completely partitioned with structures and closed, the tidal effect of the sea will not be transmitted to the compartment,
Seawater and air are not regularly supplied to beaches and rocks on the coast of the plot, which disturbs the living environment of organisms such as microorganisms and shellfish that live on the coast, and the natural purification action on the coast is lost. was there.

The conventional levee is made of a rigid body such as a concrete structure.When the levee is used as a leisure facility, it gives people a feeling of blockage and comes to feel the openness of the sea. It was uncomfortable for people. In particular, at the time of ebb tide, the upper part of the concrete structure is projected from the sea surface to a high degree, and there is a problem that people who use the structure have a strong sense of blockage. Also,
There was also a problem in terms of harmony with the surrounding scenery, which could damage the surrounding scenery.

The present invention has been made in view of the above circumstances, and its purpose is to partition a part of coastal sea area where water quality deteriorates and to naturally purify the seawater in the partitioned coastal sea area without cost. The purpose of the present invention is to provide a partition membrane for a coastal sea area that is purified by the action and does not give a feeling of blockage to people who use the above-mentioned coastal sea area.

[Means for Solving the Problems] The partition membrane of the coastal sea area according to the present invention partitions a part of the coastal sea area and transmits the tide level difference of the outside sea area to the inside of the sea area to thereby divide the sea area of the coastal sea area. Is a partitioning film for coastal sea areas for purifying water by a natural purifying action, wherein a large number of floating bodies are arranged at regular intervals in one row so as to surround the coast on the sea in the coastal sea area, and one end of a chain is attached to each of the floating bodies. Parts are attached and the other ends of these chains are fixed to the seabed, thereby mooring the floating body from the seabed, arranging strip-shaped membranes along the one row of floating bodies, and in each of the one row of floating bodies, One side edge of the strip-shaped membrane is attached, the membrane is hung from the one row of floating bodies into the sea in a curtain shape, and the other side edge of the membrane is fixed to the seabed to partition the coastal sea area.

[Operation] According to the above configuration, in the coastal sea area where the water quality is deteriorated, the coastal sea area is partitioned by the band-shaped membrane to prevent contaminants and the like from newly entering from the surrounding sea area. Further, the band-shaped film transmits the tidal action to the coast of the sectioned coastal sea area without blocking the tidal action. Therefore, on sandy beaches and rocky areas,
Seawater and air are supplied on a regular basis, and the organic substances that cause pollution are supplemented by the filtering effect of seawater on sandy beaches and the organisms such as microorganisms and shellfish that live on sandy beaches and rocky areas without impeding the natural purification action of the coast. , Purifies seawater by being decomposed.

When the coastal sea area is divided, only the floating body that moves up and down due to the tidal action is on the sea surface, and does not give a feeling of blockage to the users.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2 (A) and (B), the partition membrane in this coastal area is located on the sea surface 7 in the coastal area 6 where the water quality has deteriorated.
The coastal sea area 6 is divided by the strip-shaped membrane 9 arranged so as to surround the beach 8 on the coast, and the seawater with newly deteriorated water quality is prevented from flowing into the inside 11 of the division from the outside 10 of the division. This is for purifying the seawater inside the compartment 11 by the natural purifying action.

On the sea 7 of the coastal sea area 6 so as to surround the beach 8, 1
A large number of floating bodies 12, 12 ...
Attaching one ends 14, 14 of chains 13, 13 to each of 12, 12, and fixing the other ends 15, 15 of these chains 13, 13 to anchors 17, 17 provided on the seabed 16. Floating body
Mooring 12, 12 ... from the seabed 16. Then, the film 9 is replaced with 1
Arranged along the row of floating bodies 12, 12, ...
Attach one side edge 18 of the membrane 9 to each of the
The coastal sea area 6 is defined by hanging the curtains 12 to 12 into the sea and fixing the other side edge 19 of the membrane 9 to the seabed 16.

FIG. 2 (A) is a diagram of the partitioned coastal sea area 6 when the tide is highest, and FIG. 2 (B) is a diagram of the partitioned coastal water area 6 when the tide is highest.

In FIGS. 2A and 2B, reference numeral 20 is the sea surface when the tide is highest, and reference numeral 21 is the sea surface when the tide is lowest. Reference numeral 22 is the intersection of the sea surface 21 and a line extending vertically from the end 15 of the chain 13. Further, reference numeral 24 is an intersection between the sea surface 20 and the beach 8, and reference numeral 25 is an intersection between the sea surface 21 and the beach 8. In FIG. 2 (B), reference numeral 23 is an end portion 14 of the chain 13.
It is the intersection of the straight line connecting the end 15 with the sea surface 21.

The length of the chain 13 is set so that the seawater inside the compartment 11 does not flow out to the outside 10 during the ebb tide or the seawater outside the compartment 10 flows into the inside 11 during the high tide. Must satisfy the conditions shown in.

First, as shown in FIGS. 2 (A) and 2 (B), the chain length is represented by an approximate value, which is a straight line distance d from the floating body 12 to the end 15 of the chain 13.

In FIG. 2 (A), the intersection 22 and the end of the floating body 12 and the chain 13
Let A be the area of a right-angled triangle that connects 15 pieces.

In FIG. 2 (B), the intersection 22 and the intersection 23 and the end of the chain 13
Let B be the area of a right-angled triangle surrounded by a straight line connecting 15 and 15, and let C be the area between the intersection 24 and the floating body 12 between the sea surface 20 and the sea surface 21.

When the areas A, B, and C are set as described above, the chain length d must satisfy the following equation.

A + B> C That is, if the above formula is satisfied, the cross-sectional area C of seawater that has increased due to the sea level rising at high tide compared to that at low tide increases due to the floating body flowing to the open ocean side at low tide. Inner 11 The area is smaller than the cross-sectional area A + B on the ocean side, and the seawater of the volume with cross-sectional area C at high tide is absorbed into the volume of cross-sectional area A + B at low tide. Seawater does not move on the outside 10.

Areas A, B, and C are obtained by the following formula.

C = (L-L ₁ ) × HT HT: Maximum tide difference HL: Water depth at the end 15 at low tide d: Chain length (approximate value) L: Horizontal distance from intersection 24 to intersection 22 L ₁ : Horizontal distance from floating body 12 to intersection 22 at high tide L ₂ : Distance from floating body 12 to intersection 22 at low tide L ₃ : Distance from intersection 22 to intersection 23 According to the above configuration, coastal sea area 6 is divided. , Inside the compartment 11
There is no inflow of seawater with newly deteriorated water quality from outside the area 10.

When the tide rises and falls in the coastal sea area, the floating body moves and the tidal action is transmitted to the partitioned coastal sea area 6.
Therefore, the seawater and the air are regularly supplied to the sand beach 2 inside the section 11, and the above-mentioned organisms are polluted in seawater without destroying the living environment of organisms such as microorganisms and shellfish that inhabit the sand beach 8. The seawater in the compartment 11 is purified by capturing and decomposing the organic substances that cause the. Further, as the sea surface moves up and down on the sand beach 8, relatively large foreign matter is removed by the filtering action of the sand beach 8.

As described above, by providing the partition membrane in the coastal sea area of this embodiment, the inside 11 of the compartment can be purified without running cost.

When the coastal sea area 6 is divided, only the floating bodies 12, 12 ... are present on the sea 7 of the coastal sea area 6 without giving a feeling of blockage to people who use the coastal sea area 6, and the beauty of the surrounding area. It doesn't hurt. Further, since the floating bodies 12, 12 ... Move up and down according to the ebb tide and the high tide, people who use the coastal sea area 6 do not have a strong sense of blockage during the ebb tide.

Therefore, a leisure facility such as a beach can be provided in the partitioned coastal sea area 6 at a low cost, and the coastal sea area 6 can be highly utilized.

Moreover, the floating body floating on the sea can be used as a part of leisure facilities such as a sunbathing place, a resting place for swimmers, and a venue for a maritime party.

[Effects of the Invention] As described in detail above, according to the present invention, when the coastal sea area is divided, only floating bodies are visible on the sea, and people using the coastal sea area have a feeling of blockage. The coastal waters can be sectioned without damaging the surrounding landscape.

In addition to preventing the inflow of contaminated seawater to the open sea, the tidal effect is also transmitted to the partitioned coastal waters, so the natural purification of the coasts allows the seawater in the above-divided coastal waters to be cost-effective. Can be purified and the water quality can be kept in good condition.

Therefore, the coastal waters can be highly utilized, for example, to build leisure facilities without much cost.

In addition, the floating body can be used as part of a leisure facility.

[Brief description of drawings]

FIGS. 1 and 2 (A) and (B) show an embodiment of the present invention, in which FIG. 1 is a plan view of a partition membrane in the coastal sea area at high tide provided in the coastal sea area. Fig. 2 (A) is a cross-sectional view of the partition membrane of the coastal sea area provided in the coastal sea area at low tide, Fig. 2 (B) is a cross-sectional view of the partition membrane of the coastal sea area provided in the coastal sea area at high tide, Fig. 3 [Fig. 5] Fig. 5 shows a conventional technique, and is a plan view of a partition wall provided in a coastal area. 1, 6 ... Coastal waters, 8 ... Sand beach, 9 ... Membrane, 12 ... Floating body, 13 ... Chain, 16 ... Sea bottom, 20, 21 ... Sea surface.

Front page continued (72) Kidai Kawai, 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Ryuzo Tazawa 2--16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction (72) Inventor Hiroshi Yonekura 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Katsumi Shimizu 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Stocks In-house (72) Inventor Satoshi Kiyokawa 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Kazashi Takanashi 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction (72) Takumi Oyama, 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Nobutaka Imamura 2--16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction (72) ) Inventor Yoshinobu Yoneyama 2-16-1 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Mamoru Nasu 2 Kyobashi, Chuo-ku, Tokyo No. 16-1 Shimizu Construction Co., Ltd. (72) Creator Kazuhiko Takahashi 2-16 Kyobashi, Chuo-ku, Tokyo 16-1 Shimizu Construction Co., Ltd. (72) Creator Takanobu Kashiuchi 2-chome, Chuo-ku, Tokyo No. 16-1 Shimizu Corporation

Claims (1)

[Scope of utility model registration request] 1. A partition membrane of a coastal sea area for purifying seawater of the partitioned coastal sea area by natural purification by partitioning a part of the coastal sea area and transmitting the tide level difference of the sea area outside the compartment to the interior of the compartment. In addition, a large number of floating bodies are arranged at equal intervals in one row so as to surround the coast on the coastal sea, one end of each chain is attached to each of the floating bodies, and the other end of these chains is fixed to the seabed. By mooring the floating body from the seabed, and arranging the strip-shaped membrane along the one row of floating bodies,
One side edge of the strip-shaped membrane is attached to each of the one row of floating bodies, the membrane is hung from the one row of floating bodies into the sea in the form of a curtain, and the other side edge of the membrane is fixed to the seabed to form a coastal sea area. A partition membrane for coastal waters, which is characterized by partitioning.