JP4941239B2 - Partition structure - Google Patents

Description

  The present invention relates to a partition structure, and more particularly to a partition structure for partitioning a purified water area formed in a coastal sea area from the offshore side.

  As an example of a partition structure that prevents the inflow and outflow of sludge, etc. provided in water areas such as coasts, rivers, lakes, etc., a sludge prevention film is provided at the location where the water area is to be partitioned, and a wire is attached to the anchor installed on the bottom of the water. There is known a partition structure configured to be connected to each other and prevent inflow and outflow of sludge and the like inside and outside the sludge prevention film.

As another example of the partition structure, Patent Document 1 discloses that a film body, a floating body that is connected to the upper edge portion of the film body and imparts buoyancy to the film body, and a lower edge portion of the film body is fixed to the water bottom. There has been proposed a partition structure that includes an anchor and a mooring body that pulls the upper edge portion of the membrane body toward the water bottom and is configured to prevent inflow and outflow of sludge inside and outside the membrane body.
JP 2004-204609 A

  By the way, when the partition structure having the above configuration is applied to, for example, a purification water area on the coast, when the water level rises at high tide, the seawater corresponding to the rise in the water level is between the sludge prevention membrane (film body) and the seabed. Since it flows into the purified water area from the outside (offshore side) through a gap or the like, the purification effect is reduced by the seawater flowing from the outside of the sludge prevention membrane (film body). In addition, when construction is performed in the purified water area, the turbid water generated by the work flows out from the purified water area to the outside via a gap between the sludge prevention membrane (film body) and the seabed, reducing the pollution prevention effect. Resulting in.

  The present invention has been made in view of the conventional problems as described above, and can continue to partition the purified water area from the offshore side without being affected by tides, and from the purified water area to the offshore side. The purpose of the present invention is to provide a partition structure that can prevent the outflow of purified water and the inflow of seawater from the offshore side into the purified water area.

The present invention employs the following means in order to solve the above problems.
That is, the present invention is a partition structure for forming a purified water area in the sea area along the coast, provided to partition the purified water area from the offshore side, and substantially the same as the water level at high tide of the purified water area. A partition member that is formed at the height of the water and is in contact with the bottom of the purified water area and movable in the offshore and shore direction due to tides, and is provided at the upper end of the partition member on the sea surface. A floating body that floats, and a weight body that is provided at a lower end portion of the partition member, maintains a state in which the lower end portion of the partition member is in contact with the sea bottom, and moves on the sea floor in the offshore and shore direction due to tides. wherein the submarine includes a sand layer is formed on the surface of the inclined surface of constant slope, the upper surface of the sand layer the weight body is movable offshore and shore direction, the seabed, the weight Provide a limb that surrounds the range of movement of the body. Characterized by providing the sand in the portion surrounded by the.

According to the partition structure of the present invention, the partition member is formed at substantially the same height as the water level of the purified water area at high tide, supported by the floating body provided at the upper end, and further, the lower end on the seabed. Since the weight body that keeps contact is configured to be able to move on the seabed by tidal flow, the partition material moves in the offshore and shore direction following the tidal flow, and the purified water area is moved offshore by the partition material. Therefore, it is possible to prevent the outflow of purified water from the purified water area to the offshore side and the inflow of seawater from the offshore side to the purified water area without being affected by tides.
In addition, since the weight body moves in the offshore and shore direction on the surface composed of the inclined surface of the sand layer at the bottom of the seabed, the movement of the weight body is not affected by the surface shape of the seabed. The partition material can be smoothly moved in the offshore and shore directions following the tidal range.
Furthermore, when there is unevenness on the bottom of the purified water area, a sand layer is formed in the part surrounded by the levee and the weight moves on the surface of the sand layer. It is possible to smoothly move the partition material in the offshore and shore directions following the tides.

Further, the present invention is a partition structure for forming a purified water area in the sea area along the coast, provided to partition the purified water area from the offshore side, and substantially the same as the water level at the time of high tide of the purified water area. A partition member that is formed at the height of the water and is in contact with the bottom of the purified water area and movable in the offshore and shore direction due to tides, and is provided at the upper end of the partition member on the sea surface. A floating body that floats, and a weight body that is provided at a lower end portion of the partition member, maintains a state in which the lower end portion of the partition member is in contact with the sea bottom, and moves on the sea floor in the offshore and shore direction due to tides. A pair of water-stopping structures extending from the shore toward the offshore and parallel to each other on the coast, and the partition material between the pair of water-stopping structures It is characterized in that movable offshore and shore direction .

According to the partition structure of the present invention , the purified water area is formed in a portion surrounded by the pair of water stop structures and the partition material provided between the pair of water stop structures. A desired purified water area can be formed without being affected .

Moreover, in this invention, the said partition material is good also as consisting of a film | membrane material or board | plate material which has impermeableness.

According to the partition structure of the present invention, the purified water area is partitioned from the offshore side by a partition material composed of a membrane material or plate material having impermeability, and purified water flows out from the purified water area to the offshore side through the partition material, Seawater is prevented from flowing from the offshore side into the purified water area.

Furthermore, in this invention, it is good also as a guide means supporting the said partition material so that a movement to an offshore and a shore direction is possible between a pair of said water stop structure and the said partition material.

According to the partition structure of the present invention, the partition member provided between the pair of water-stop structures is supported by the guide means so as to be movable in the offshore and shore directions, so that it follows the tides.
It is possible to move smoothly in the offshore and shore directions .

Furthermore, in this invention, it is good also as a sealing means sealing between between a pair of said water stop structure and the said partition material.

According to the partition structure of the present invention, since the gap between the pair of water stop structures and the partition member is sealed by the sealing means, the inside of the purified water area is interposed between the partition member and the pair of water stop structures. Purified water flows out to the offshore side, and seawater is prevented from flowing into the purified water area from the offshore side .

  As described above, according to the present invention, the partition member is formed at substantially the same height as the water level of the purified water area at high tide, and is supported by the floating body provided at the upper end, and further, the lower end. Since the weight body that keeps the part in contact with the seabed is configured to move on the seabed by the tides, the partition material is moved offshore and shore in accordance with the tides and purified by the partition material. The water area can continue to be partitioned from the offshore side. Therefore, the outflow of purified water from the purified water area to the offshore side and the inflow of seawater from the offshore side to the purified water area can be prevented without being affected by tides.

  Moreover, since the partition material is formed of a membrane material or plate material having impermeable properties, the purified water flows through the partition material and flows out from the purified water area to the offshore side, and seawater enters the purified water area from the offshore side. Inflow is blocked.

  Furthermore, since the weight moves in the offshore and shore direction on the surface of the seabed sand layer with a constant slope, the movement of the weight is not affected by the surface shape of the seabed. It is possible to smoothly move the partition material in the offshore and shore direction following the tidal range, and without being affected by tides, the outflow of purified water from the purified water area to the offshore side, and the purified water area from the offshore side. Inflow of seawater to the inside can be prevented.

  In addition, when there is unevenness on the bottom of the purified water area, a sand layer is formed in the part surrounded by the levee and the weight is moved on the surface of the sand layer. The partition material can be moved in the offshore and shore direction following the tides without being affected by the state of the seabed, and the purification from the purification water area to the offshore can be performed without being affected by the tides. Water outflow and seawater inflow from the offshore side into the purified water area can be prevented.

  Furthermore, since the partition material is provided between the pair of water-stopping structures, and the purified water area is formed in the portion surrounded by the partition material and the pair of water-stop structures, without being affected by the coastal state, A desired purified water area can be formed.

Furthermore, since the partition material is supported by the guide means so as to be movable in the offshore and shore directions, the partition material can be smoothly moved in the offshore and shore directions following the tides.
Further, since the gap between the pair of water stop structures and the partition material is sealed by the sealing means, the purified water flows out from the purified water area to the offshore side between the partition material and the pair of water stop structures. In addition, seawater can be prevented from flowing into the purified water area from the offshore side.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of a partition structure according to the present invention. FIG. 1 is a plan view showing the entire partition structure, and FIG. 2 is a view taken along line AA in FIG. 3 is a schematic cross-sectional view taken along line BB in FIG. 2, FIG. 4 is a schematic view of the lower end portion of the partition member in FIG. 1, and FIG. 5 is a modified example of the seabed in the purified water area. It is a schematic sectional drawing shown. In addition, FIG.1, FIG.2 and FIG.5 has shown the state at the time of the high tide and the low tide of a tide.

  That is, the partition structure 1 of the present embodiment is applied to form the purified water area 2 partitioned from the offshore 25 side in the sea area along the coast, as shown in FIGS. A pair of water blocking structures 7, 7, a partition member 8 provided between the pair of water blocking structures 7, 7 so as to be movable in the direction of the offing 25 and the shore 26, and a floating body 9 that supports the partition member 8, The partition member 8 is provided with a weight body 19 that applies a load in a vertically downward direction (sea floor direction).

  The pair of water-stop structures 7 and 7 are wall-like structures made of concrete or the like, and extend so as to extend from the shore 26 toward the offshore 25 on both sides of the purified water area 2 and to be parallel to each other. Is erected. Each water stop structure 7 is set to have a height such that the upper end protrudes above the surface of the purified water area 2 at high tide. The seawater is prevented from flowing inside.

  Each water-stopping structure 7 is formed in a water-stopping structure having at least a water-impermeable surface, and seawater flows into the purified water area 2 from the offshore 25 side through each water-stopping structure 7, or The purified water is prevented from flowing out from the purified water area 2 to the offing 25 side through the water structure 7.

  The partition member 8 has a belt-like shape formed of a water-impermeable film material or plate material (film material in the present embodiment) such as rubber or resin, and is formed between the pair of water-stop structures 7 and 7. The purified water area 2 is formed in a portion surrounded by the partition member 8 and the pair of water-stopping structures 7, 7 along the shore 26 and facing the vertical direction.

  The partition member 8 has a height (vertical) dimension that is substantially the same as the depth of the purified water area 2 at high tide, and a width (horizontal) dimension that spans the entire width of the purified water area 2 (a pair of water blocking structures 7). In this way, the purified water area 2 at high tide is partitioned from the offshore 25 side over the entire height and width.

  Although not shown, the partition member 8 may be configured to be attached to a four-frame frame so as to close the opening and to be reinforced by the frame.

  The floating body 9 is fitted around a plurality of columnar floats 10 provided at predetermined intervals on the upper end of the partition member 8, a rope 11 connecting the adjacent floats 10, 10, and the rope 11. The floating cover 9 keeps the upper end of the partition member 8 floating above the water surface of the purified water area 2.

  Sealing means 13 are provided at both ends in the width direction of the partition member 8, and the seal means 13 is provided between the both ends in the width direction of the partition member 8 and the inner surface of each water stop structure 7 (surface on the purified water area 2 side). Is sealed over the entire height of the partition member 8.

  As the sealing means 13, for example, a brush 13 a made of an impermeable material can be cited, and the width of the partition member 8 can be adjusted so that the tip of the brush 13 a contacts the inner surface of each water-stopping structure 7. By attaching to both ends, the space between both ends in the width direction of the partition member 8 and the inner surface of each water-stopping structure 7 is sealed, and purified water flows out from the purified water area 2 to the offshore 25 side through the space between them. The seawater is prevented from flowing into the purified water area 2 from the offshore 25 side.

  Guide means 15 is provided between the upper ends of both ends of the partition member 8 in the width direction and the upper ends of the water stop structures 7, and the guide member 15 allows the partition member 8 to be paired with the water stop structures 7. 7 is supported so as to be movable in the direction of offshore 25 and shore 26.

  The guide means 15 includes, for example, a guide rope 16 stretched over the entire length of each water stop structure 7 at the upper end of each water stop structure 7 and a ring-shaped support attached to the guide rope 16 so as to be movable. It is comprised from the member 17 and the connection rope 18 which connects between the support member 17 and the upper end part of the width direction both ends of the partition material 8. FIG. By the support member 17 of the guide means 15 moving on the guide rope 16, the partition member 8 smoothly moves toward the offshore 25 and the shore 26 in a state where the pair of water-stopping structures 7 and 7 are partitioned. Become.

  The connecting rope 18 that connects the support member 17 and the partition member 8 is a telescopic rope, and the upper end of the partition member 8 is connected to the purified water region without being affected by fluctuations in the water level of the purified water region 2 due to tides. The purified water area 2 is continuously partitioned from the offing 25 side by the partition material 8.

  In addition, a stopper portion is provided on the guide rope 16 of the guide means 15, and the support member 17 is brought into contact with the stopper portion, whereby the moving range of the partition member 8 in the direction of the offing 25 and the shore 26 is restricted. May be.

  The weight body 19 includes a plurality of weights 20 made of lead or the like provided at predetermined intervals at the lower end portion of the partition member 8, and a load downward in the vertical direction is applied to the partition member 8 by the plurality of weights 20. With this load, the lower end portion of the partition member 8 is pressed against the seabed 3 of the purified water area 2.

  The weight 20 moves in the direction of the offshore 25 and the shore 26 so as to slide on the seabed 3 of the purified water area 2 following the partition material 8 when the partitioning material 8 moves in the direction of the shore 25 and the shore 26 due to tidal flow. To do. Thereby, the lower end part of the partition material 8 can be pressed against the seabed 3 of the purified water area 2 without being affected by tides.

  As shown in FIG. 4, a brush-like seal member 14 made of an impermeable material is provided at the lower end of the partition member 8 so as to close the adjacent weights 20 and 20. As a result, the space between the lower end of the partition member 8 and the sea bottom 3 of the purified water area 2 is securely sealed, and the purified water flows from the inside of the purified water area 2 to the offshore 25 side through the space between the lower end of the partition material 8 and the sea floor 3. The seawater is prevented from flowing into the purified water area 2 from the offshore 25 side.

  The sea bottom 3 of the purified water area 2 does not need to be modified as long as it has a flat slope with a constant slope. Preferably, a sand layer 4 having a predetermined thickness is provided on the sea bottom 3, and the surface 5 of the sand layer 4 is A correction is made to form a flat slope with a constant slope. By providing the sand layer 4 having such a configuration on the seabed 3, the weight 20 of the weight body 19 can be smoothly moved toward the offshore 25 and the shore 26, and between the lower end of the partition material 8 and the seabed 3. It can be surely sealed.

  In addition, when unevenness exists in the seabed 3 of the purified water area 2, as shown in FIG. 5, the slat 6 is provided so as to surround the movement range of the partition member 8 and the weight body 19, and What is necessary is just to provide the sand layer 4 of the predetermined thickness which the surface 5 consists of a flat inclined surface with a fixed gradient inside.

Next, the effect | action of the partition structure 1 comprised as mentioned above is demonstrated.
First, as shown in FIGS. 1 and 2, when the water level on the offing 25 side changes due to the tides, the partition material 8 moves in the direction of the offing 25 and the shore 26 following the change in the water level. The water level at the offshore 25 side is the same as the water level at the offshore 25 side, and the water level at the purified water area 2 and the water level at the offshore 25 side are kept in equilibrium.

  In other words, at the time of high tide, the partition material 8 moves in the direction of the shore 26 following the change (rise) of the water level on the offing 25 side, and the partitioning material 8 is located at the position where the water level of the purified water area 2 matches the water level on the offing 25 side. Stop. In this case, the dimension in the height direction of the partition member 8 is set to be approximately the same length as the water level of the purified water region 2 at high tide, and the upper end of the partition member 8 is placed on the surface of the purified water region 2 by the floating body 8. Since the lower end is held in contact with the seabed 3 by the weight body 19, the purified water area 2 at high tide can be partitioned over the entire height, and the purified water flows from the purified water area 2 to the offshore 25 side. The seawater does not flow out or flow into the purified water area 2 from the offshore 25 side, and the purified water area 2 can be kept partitioned.

  Further, at low tide, the partition material 8 moves in the direction of the offshore 25 following the change (decrease) in the water level on the offshore 25 side, and the partition material 8 is located at a position where the water level of the purified water area 2 matches the water level on the offshore 25 side. Stop. In this case, since the volume of the portion A1 (the volume increased at high tide) moves to the portion A2 in the figure, the partition member 8 is in an inclined state in which the upper end is located on the offing 25 side from the lower end. However, since the upper end of the partition member 8 is held on the surface of the purified water area 2 by the floating body 9 and the lower end is held in contact with the seabed 3 by the weight body 19, the partition member 8 is purified through the partition member 8. Purified water does not flow out from the water area 2 to the offshore 25 side, and seawater does not flow into the purified water area 2 from the offshore side 25, so that the purified water area 2 can continue to be partitioned.

  In the partition structure 1 according to the present embodiment configured as described above, the partition member 8 is moved in the direction of the offing 25 and the shore 26 by tidal flow, and the upper end of the partition member 8 is purified by the floating body 9 Since the lower end of the partition member 8 is held in contact with the seabed 3 by the weight body 19, the purified water area 2 is separated from the purified water area 2 without being affected by tides. 8 can keep partitioning, and it is possible to prevent purified water from flowing out from the purified water area 2 to the offshore 25 side and seawater from flowing from the offshore 25 side into the purified water area 2.

  Therefore, when purifying the water quality and bottom sediment of the purified water area 2, seawater does not flow into the purified water area 2 to the offshore 25 side and the purification effect is not reduced. In this case, the function as the purified water area 2 can be maintained for a long time without the turbid water generated in the purified water area 2 flowing out to the offing 25 and reducing the pollution prevention effect.

  In the above description, a pair of water-stopping structures 7 and 7 are provided on the coast, and a partition member 8 is movably provided between the pair of water-stopping structures 7 and 7, so Although the purified water region 2 is formed in a portion surrounded by the portions 7 and 7 and the partition material 8, the purified water region 2 may be formed only by the partition material 8 without providing the water stop structure 7. In that case, the partition member 8 may be provided in an arc shape in the coastal sea area, and the purified water region 2 may be formed between the partition member 8 and the shore 26.

  In the above description, the partition member 8 is provided between the pair of water-stopping structures 7, 7, and the guide member 15 provided between the partition member 8 and each of the water-stopping structures 7 forms the partition member 8. Although the movement range was restricted, anchors were installed on the seabed 3 at the midpoint between the position of the partition member 8 at high tide and the position of the partition member 8 at low tide, and the lower end of the partition member 8 was connected to each anchor via a wire rope. You may comprise so that a part may be connected and the movement range of the partition material 8 may be controlled with a wire rope.

  Furthermore, in the above description, the partition structure 1 according to the present invention is applied to the case where the purified water area 2 is formed on the coast of the sea. However, the partition structure 1 may be applied to rivers, lakes and the like where water moves. In that case, the same effect is obtained.

It is the schematic plan view which showed one Embodiment of the partition structure by this invention. It is the schematic sectional drawing seen along the AA line of FIG. It is the schematic sectional drawing seen along the BB line of FIG. It is the schematic of the lower end part of the partition material of FIG. It is the schematic sectional drawing which showed the modification of the seabed of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Partition structure 2 Purified water area 3 Sea bottom 4 Sand layer 5 Surface 6 Ladder 7 Water stop structure 8 Partition material 9 Floating body 10 Float 11 Rope 12 Cover 13 Sealing means 13a Brush 14 Seal member 15 Guide means 16 Guide rope 17 Support member 18 Connecting rope 19 Plumb 20 Plum 25 Offshore 26 Shore

Claims (7)

A partition structure for forming a purified water area in the sea area along the coast,
It is provided so as to partition the purified water area from the offshore side, is formed at substantially the same height as the water level at the time of high tide of the purified water area, the lower end is in contact with the sea bottom of the purified water area, and A partition material movable in the offshore and shore directions;
A floating body provided on the upper end of the partition member and floating on the sea surface;
Provided at the lower end portion of the partition member, and maintaining the state where the lower end portion of the partition member is in contact with the sea floor, and comprising a weight body that moves on the sea floor in the offshore and shore direction due to tides,
The seabed has a sand layer whose surface is formed on a slope with a constant gradient, and the weight body is configured to be movable in offshore and shore directions on the surface of the sand layer ,
A partition structure characterized in that a basin is provided on the seabed so as to surround a moving range of the weight body, and the sand layer is provided in a portion surrounded by the levee . A partition structure for forming a purified water area in the sea area along the coast,
It is provided so as to partition the purified water area from the offshore side, is formed at substantially the same height as the water level at the time of high tide of the purified water area, the lower end is in contact with the sea bottom of the purified water area, and A partition material movable in the offshore and shore directions;
A floating body provided on the upper end of the partition member and floating on the sea surface;
Provided at the lower end portion of the partition member, and maintaining the state where the lower end portion of the partition member is in contact with the sea floor, and comprising a weight body that moves on the sea floor in the offshore and shore direction due to tides,
On the coast, a pair of water-stopping structures are erected so as to extend from the shore toward the off-shore and in parallel with each other, and the partition material is placed between the pair of water-stopping structures offshore and on the shore. A partition structure provided so as to be movable in a direction . The said seabed has a sand layer formed in the inclined surface of a fixed slope, The said weight body is comprised so that a movement to the offshore and the shore direction is possible on the surface of this sand layer. The partition structure described in 1. The partition structure according to claim 3, wherein a basin is provided on the seabed so as to surround a moving range of the weight body, and the sand layer is provided in a portion surrounded by the levee . The partition structure according to any one of claims 1 to 4, wherein the partition member is made of a water-impermeable film material or plate material . 6. The guide means for supporting the partition material movably in the offshore and shore directions is provided between the pair of water-stop structures and the partition material. The partition structure according to claim 1. The partition structure according to claim 6, wherein sealing means for sealing between the pair of water-stop structures and the partition member is provided .

Images