JP2016067249A - Recovery device and method for floating fish reef - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recovery device and method for a floating fish reef which requires a low recovery work cost and can perform recovery work efficiently in a short time.SOLUTION: The recovery device for a floating fish reef includes: a single ship 6 moved in a sea area with a tidal current T toward a floating fish reef 1; a first recovery rope operation tool 10 connected with the ship in an upstream sea area A of the floating fish reef and connected with one end side of a recovery rope 7; a second recovery operation tool 11 arranged in the upstream sea area of the floating fish reef and connected with the other end side of the recovery rope; a traction tool 12 arranged in the upstream sea area of the floating fish reef and restricting a drift of the second recovery rope operation tool; and a ring formed on one end part of the recovery rope and inserted with the other end part of the recovery rope to make the recovery rope into a ring shape. In the upstream sea area of the floating fish reef, the recovery rope is arranged in a direction crossing a mooring rope in the sea. When the recovery rope is arranged around the mooring rope, the other end part is inserted into the ring of the recovery rope to be pulled up by the ship, and the recovery rope is pulled up and the floating fish reef is recovered by the ship in a state of the recovery rope tightened with respect to the mooring rope.SELECTED DRAWING: Figure 4

Description

  The present invention is low in recovery work cost, can perform the recovery work efficiently in a short time, simplifies the work contents, and reduces the handling work of the collection line that is a heavy object. It is related to a floating reef recovery device and a recovery method that can secure improvement in safety and safety, can also narrow the recovery work area, and can prevent the mooring line and recovery line from breaking. .

  The middle-floor floating reefs moored in the middle-floor area in the sea are collected by being lifted to the sea after a useful life of about 10 years for reasons such as environmental problems.

  Patent Document 1 is known as a method for collecting floating fish reefs. In general, the “recovery method of middle-floating floating fish reef” in Patent Document 1 is a fish reef body provided in a floating state below the sea surface, a sinker submerged in the seabed, and a mooring line for mooring the fish reef body to the sinker. A middle-floating floating reef equipped with a plurality of work boats, with the recovery ropes hung in the sea while at least one of the plurality of work boats is suspended. The work boat is moved, the central portion of the recovery line is hung on the mooring line, the recovery line is attached to the mooring line, and the recovery line is pulled up to the work ship to recover the middle-floating fish reef.

  In some cases, the plurality of work boats are run side by side, and the central portion of the recovery line suspended in the sea while being hung over the plurality of work ships is hooked on the mooring line of the middle floating fish reef and attached to the mooring line. Further, a metal bundling member or a contact fitting is used for the fixed portion of the recovery line and the mooring line.

  In the recovery operation, a recovery rope having a strength capable of pulling up the whole floating fish reef composed of a fish reef body, a mooring line, a sinker and the like is used. The recovery rope is generally attached to a mooring rope because a fish reef body made of FRP or the like is easily damaged when it is lifted.

Japanese Patent No. 5255078

  In Patent Document 1, since a plurality of work boats are used, the fuel cost increases, and a large number of workers such as a ship maneuvering are required, resulting in a high cost for the collection work. One of the work boats is moved so that the recovery line is attached to the mooring line. However, since the recovery lines are suspended over several work ships and suspended in the sea, they are recovered by the moving work ship. When the cable is pulled, the recovery cable is lifted from the set depth for hanging on the mooring cable, and the recovery cable cannot be appropriately hung on the mooring cable. In order to avoid this, the recovery line has to be pulled slowly, which requires a lot of work time.

  In order to run multiple workboats with recovery ropes running side by side, it is necessary to keep the distance between the workboats appropriately and move them at almost the same speed. For this reason, it is necessary to secure a wide area of the recovery work area and keep working in contact with each other by radio, etc., which is likely to obstruct maritime traffic, and the work contents are complicated and time-consuming.

  The recovery line is attached to the mooring line and is used to lift the entire middle-floating floating reef including the reef body and sinker at a stretch. Therefore, the recovery cord is a heavy object having a large diameter and a strong rigidity.

  In Patent Document 1, such a heavy recovery line is suspended over a plurality of work ships in a state of being suspended in the sea. Therefore, when moving a work ship, the resistance received from a recovery line is large, and the ship maneuverability is inferior. Moreover, the length of the recovery line is long due to the suspension of the recovery line over several work ships, and the amount of wrapping around the winch drum mounted on the ship is great, resulting in poor workability. At the same time, it takes a long time to collect.

  The work of collecting recovery lines across multiple work boats is carried out in the sea area, so special attention must be paid to work safety, especially when the response to weather changes is delayed. is there. Furthermore, after completion of attachment of the recovery line to the mooring line, a plurality of work boats approach each other to perform the recovery operation, so that it is necessary to carefully handle the ship and perform other operations, which is complicated.

  Furthermore, in order to fix the winding part of a mooring line and a collection | recovery line, metal objects, such as a bundle member and a contact metal fitting, are used. If a load applied to these metal fittings is applied to the mooring cable or the recovery cable, the mooring cable or the like may be broken by the metal fittings.

  The present invention has been devised in view of the above-described conventional problems, and the collection work cost is low, the collection work can be performed efficiently in a short time, and the work content is simplified and is heavy. It is possible to reduce the handling work of the recovery line, improve the recovery workability and improve safety, reduce the recovery work area, and may cause the mooring line and recovery line to break. It is an object of the present invention to provide an apparatus and method for collecting floating fish reefs that can be avoided.

  An apparatus for collecting a floating fish reef according to the present invention includes an anchor submerged on the seabed, a mooring line connected to the anchor, a mooring line connected to the anchor, and a floating state in the sea. A floating reef recovery device that lifts and recovers a floating reef equipped with a reef body that is placed in the sea, and is moved in the sea area where there is a tide toward the floating reef. A single tow rope towed by the ship; a float removably coupled to the tow rope and floated upstream of the floating fish reef and towed by the ship; and A first recovery rope control tool having a float rope suspended from the float in the sea, wherein one end in the length direction of the recovery rope is detachably connected to the float rope; and a float floating in an upstream water area of the floating fish reef And the A second recovery rope control tool having a float rope suspended from the funnel into the sea, the other end in the length direction of the recovery rope being detachably connected to the float rope; and floating in an upstream sea area of the floating fish reef A float, a float rope suspended from the float into the sea, a connecting rope connecting the float rope and the float rope of the second recovery rope control tool, and a connecting rope, A traction tool having a sea anchor for traction of the connecting rope, and restricting drift of the second recovery rope control tool; formed on at least one end of both ends in the length direction of the recovery rope; A ring having the recovery line inserted into the ring shape; the first recovery line control tool is moved by towing by the ship; and the second recovery line control tool is the traction tool. The first and second recovery rope control tools are moved by the traction action by the traction action so that the recovery rope is accessible in the upstream area of the floating fish reef so as to cross the mooring rope in the sea. Arrangement; when the first and second recovery ropes reach the downstream sea area of the floating reef and the recovery ropes are arranged around the mooring lines, the first and second recovery ropes The other end is passed through the ring at one end of the recovery line that is pulled up to the ship via a tool, and the recovery line is formed in an annular shape surrounding the mooring line, and the recovery line In order to reduce the diameter of the ring shape, the recovery line is pulled up with the other end pulled so that the ring approaches the mooring line and the recovery line is tightened against the mooring line. The floating reef is collected by the ship.

  When the recovery cable is arranged in an upstream area of the floating fish reef so as to be accessible to the floating fish reef in a direction intersecting the mooring cable in the sea, the first recovery rope control tool is moved by towing by the ship. Instead, it is removed from the tow rope and moved by a tidal current toward the floating fish reef.

  The rope has a diameter smaller than that of the recovery rope and is lightweight.

  The wheel is provided with a weight.

  The float rope of the traction tool is connected to a connection rope of another traction tool, and a plurality of the traction tools are arranged in series.

  A floating fish reef recovery method according to the present invention includes an anchor submerged on the seabed, a mooring line connected to the anchor, and the mooring line is connected to and moored to the anchor, and is provided in a floating state in the sea. A method for collecting a floating fish reef, wherein a floating fish reef including a fish reef body is lifted and recovered using a single recovery cord arranged in the sea; using the floating fish reef recovery device; The ship, the recovery rope, the first and second recovery rope control tools, and the traction tool are arranged in the upstream sea area of the floating fish reef; and then intersects the direction from the upstream sea area to the downstream sea area of the floating fish reef. The second recovery rope control tool and the traction tool are arranged on one side with respect to the floating fish reef in the direction to be carried out, while the ship is on the other side with respect to the floating fish reef in the intersecting direction. Towed and arranged the first retrieval rope control tool, approaching the floating fish reef In the upstream area of the floating fish reef, the recovery cable is arranged in the direction crossing the mooring line in the sea; then, the ship is moved from the upstream area of the floating fish reef toward the downstream area, and Moving the towing device by tidal current, causing the first and second recovery rope control tools to reach the downstream water area of the floating fish reef, arranging the recovery rope around the mooring rope; In the downstream sea area, remove these first and second recovery rope controls from both ends of the recovery rope that is pulled up to the ship via the first and second recovery rope controls; The recovery line is formed in an annular form surrounding the mooring line through the other end of the ring at one end of the recovery line, and then the diameter of the annular form of the recovery line is reduced with respect to the mooring line. The recovery line is tightened; after that, the recovery line is lifted The payaos including the mooring lines and collecting the said vessel.

  A floating fish reef recovery method according to the present invention includes an anchor submerged on the seabed, a mooring line connected to the anchor, and the mooring line is connected to and moored to the anchor, and is provided in a floating state in the sea. A method for collecting a floating fish reef, wherein a floating fish reef including a fish reef body is lifted and recovered using a single recovery cord arranged in the sea; using the floating fish reef recovery device; The ship, the recovery rope, the first and second recovery rope control tools, and the traction tool are arranged in the upstream sea area of the floating fish reef; and then intersects the direction from the upstream sea area to the downstream sea area of the floating fish reef. The second recovery rope control tool and the traction tool are arranged on one side with respect to the floating fish reef in the direction to be carried out, while the ship is on the other side with respect to the floating fish reef in the intersecting direction. Towed and arranged the first retrieval rope control tool, approaching the floating fish reef In the upstream area of the floating fish reef, the recovery cable is arranged in the direction crossing the mooring cable in the sea; and then the first recovery rope control tool is detached from the tow rope and released from the ship. Next, the first recovery rope control tool and the second recovery rope control tool connected to the traction tool are moved by tidal current from the upstream sea area of the floating fish reef to the downstream sea area. The first and second recovery rope control tools reach the downstream sea area of the floating fish reef, and the recovery rope is arranged around the mooring rope; then, the ship previously moved to the downstream sea area of the floating fish reef The first and second recovery rope controls are removed from both ends of the recovery rope lifted via the first and second recovery rope controls; and then the wheel at one end of the recovery rope Through the other end, the recovery line surrounds the mooring line After the formation of the state, the recovery line is tightened with respect to the mooring line so as to narrow the diameter of the ring shape of the recovery line; after that, the recovery line is lifted and the floating fish reef including the mooring line Is collected in the above-mentioned ship.

  In the floating fish reef collection device and collection method according to the present invention, the collection work cost is low, the collection work can be carried out efficiently in a short time, the work content is simplified, and the collection line that is heavy is used. Reduction in handling work can be achieved, improvement in recovery workability and safety can be ensured, recovery work area can be narrowed, and breakage of mooring and recovery lines can be avoided. be able to.

It is a side view which shows the installation state in the sea of the floating fish reef which is the collection object of the collection apparatus and collection method of the floating fish reef which concern on this invention. It is explanatory drawing explaining the arrangement | positioning state of the collection | recovery rope in suitable one Embodiment of the collection apparatus and collection | recovery method of a floating fish reef which concern on this invention. It is a figure which shows the ring | wheel provided in one edge part of the length direction both ends of the collection | recovery rope shown in FIG. It is a top view which shows a mode that a collection | recovery line approaches a floating fish reef. It is a top view which shows a mode that the both ends side of the collection | recovery line distribute | arranged around the floating fish reef was pulled up by the ship. It is a top view which shows a mode that the collection | recovery line was formed in the cyclic | annular form surrounding a mooring line. It is explanatory drawing explaining the handling which makes a collection | recovery line an annular form. It is explanatory drawing explaining the state which tightened the mooring line with the recovery line. It is explanatory drawing explaining a mode that a ring is approached to a mooring line in order to tighten a collection | recovery line with respect to a mooring line. It is explanatory drawing explaining the confirmation operation | work for confirming the tightening state of the collection | recovery line with respect to a mooring line. It is a top view which shows a mode that the collection | recovery line was distribute | arranged to the upstream sea area of a floating fish reef in other embodiment of the collection apparatus and collection method of a floating fish reef which concern on this invention. In other embodiment, it is a top view which shows a mode that the collection | recovery line which approaches a floating fish reef reached the downstream sea area of the floating fish reef. In other embodiment, it is a top view which shows a mode that the both ends side of the collection | recovery line distribute | arranged around the floating fish reef was pulled up by the ship.

  DESCRIPTION OF EMBODIMENTS Preferred embodiments of a floating fish reef collection device and collection method according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a side view showing an installation state of a floating fish reef to be collected in the sea, and FIG. 2 is an explanatory view for explaining an arrangement state of the recovery rope in the floating fish reef collection device and collection method according to the present embodiment. FIG. 3 is a diagram showing a ring provided at one end of both ends in the length direction of the recovery rope shown in FIG. 2, and FIG. 4 is a plan view showing how the recovery rope approaches the floating fish reef. FIG. 5 is a plan view showing a state where both ends of the recovery line arranged around the floating fish reef are pulled up by the ship, and FIG. 6 is a plane showing a state where the recovery line is formed in an annular shape surrounding the mooring line. FIG. 7 is an explanatory diagram for explaining the handling of the recovery cable in an annular form, FIG. 8 is an explanatory diagram for explaining a state in which the mooring cable is tightened by the recovery cable, and FIG. FIG. 10 is an explanatory diagram for explaining a state in which a ring is brought close to a mooring line for tightening. It is an explanatory diagram illustrating a checking operation for checking the tightening state of the recovery rope that.

  As shown in FIG. 1, a floating fish reef 1 includes an anchor 3 installed on the seabed 2, a mooring line 4 connected to the anchor 3 at one end (lower end), and the other end (upper end) of the mooring line 4. And a fish reef body 5 moored to the anchor 3. The fish reef body 5 is made of, for example, FRP and is formed into a hollow cage shape.

  In detail, the mooring line 4 is configured such that a lower main mooring line 4a, an upper main mooring line 4b, and a plurality of sub mooring lines 4c are sequentially connected from below to above. The lower end of the lower main mooring line 4 a is connected to the anchor 3, and the upper end of the sub mooring line 4 c that is divided and extended from the upper end of the upper main mooring line 4 b is appropriately connected to the peripheral edge of the lower end of the fish reef body 5.

  The floating fish reef 1 is assembled from an anchor 3 connected to an anchor 3 with a fish reef body 5, dropped from the work boat into the sea, and moored to the anchor 3 laid on the seabed 2 via the mooring line 4. The fish reef body 5 is provided in a floating state in the middle region of the sea.

  Hereinafter, while explaining the procedure of the method for collecting a floating fish reef according to the present embodiment, a device for collecting a floating fish reef used therefor will be described. The floating reef collection device according to the present embodiment is mainly composed of a single ship 6 (see FIG. 4 and the like), a single collection line 7 and a collection line arrangement tool 8. The floating fish reef 1 is pulled up and collected by using one collection cord 7 arranged in the sea.

  As shown in FIGS. 2 and 4, the recovery rope disposing tool 8 includes a single tow rope 9 that is towed with one end connected to the ship 6, and a first recovery rope that is connected to the tow rope 9. It is comprised from the control tool 10, the 2nd recovery rope control tool 11 which operates the recovery rope 7 in connection with the 1st recovery rope control tool 10, and the traction tool 12 which controls the 2nd recovery rope control tool 11. .

  The first recovery rope control tool 10 is composed of a float f1 and a float rope r1 having one end (upper end) connected to the float f1 and suspended in the sea. The float rope r1 is formed with a specific gravity that can be submerged in the sea. Alternatively, a weight w1 for stably hanging the float rope r1 in the sea may be provided on the other end (lower end) side of the float rope r1. The float f1 is detachably connected to the other end of the tow rope 9.

  The first recovery rope control tool 10 is a sea area A in which the tidal current T flows toward the floating fish reef 1 side (hereinafter, the sea area A is referred to as “upstream sea area A”, and conversely, the direction in which the tidal current T moves away from the floating fish reef 1 side. The sea area B flowing to the sea is called “downstream sea area B”) and towed to the ship 6 via the tow rope 9. One end side in the length direction of the recovery rope 7 is detachably connected to the other end (lower end) side of the float rope r1 of the first recovery rope control tool 10.

  Similar to the first recovery rope control tool 10, the second recovery rope control tool 11 includes a float f2 and a float rope r2 having one end (upper end) connected to the float f2 and suspended in the sea. The float rope r2 is formed with a specific gravity that can be submerged in the sea. Alternatively, a weight w2 may be provided on the other end (lower end) side of the float rope r2 for stably hanging the float rope r2 into the sea.

  Similarly to the first recovery rope control tool 10, the second recovery rope control tool 11 is also floated in the upstream sea area A of the floating fish reef 1. The other end in the length direction of the recovery rope 7 is detachably connected to the other end (lower end) of the float rope r2 of the second recovery rope control tool 11.

  The depth at which the recovery line 7 passed between the first and second recovery line controls 10 and 11 is arranged in the sea is the depth at which the mooring line 4 of the floating fish reef 1 is arranged.

  The traction tool 12 is arranged adjacent to the second recovery rope control tool 11 and connected in series. The traction tool 12 has a float f3, a float rope r3 whose one end (upper end) is connected to the float f3 and suspended in the sea, and the float rope r3 and the float rope r2 of the second recovery rope control tool 11 in the length direction. Both ends are connected to each other, and a connecting rope r4 for connecting the float ropes r2 and r3 to each other and a sea anchor 12a provided on the connecting rope r4.

  The float rope r3 and the connecting rope r4 are formed with a specific gravity that can be submerged in the sea. A weight w3 for stably hanging the float rope r3 in the sea may be provided on the other end (lower end) side of the float rope r3. Accordingly, the connecting rope r4 and the sea anchor 12a are arranged in the sea.

  The sea anchor 12a plays a role like a trough under the resistance of seawater, and pulls the connecting rope r4 in response to the surrounding water flow. Specifically, the connection rope is received by receiving a tidal current T flowing toward the floating fish reef 1 and pulling the connecting rope r4 in the direction of the tidal current T or receiving a resistance such as a surrounding water current against towing by the ship 6. R4 is pulled in the braking direction. Due to the function of the sea anchor 12a, the traction tool 12 restricts drift of the second recovery rope control tool 11.

  The traction tool 12 is also floated in the upstream sea area A of the floating fish reef 1, similarly to the first and second recovered rope control tools 10, 11.

  The tow rope 9, the float ropes r <b> 1 to r <b> 3, and the connecting rope r <b> 4 described above are only manipulated when the recovery rope 7 is arranged in the sea, and thus have a diameter smaller than that of the recovery rope 7 used for lifting the floating fish reef 1. In addition, a material that is lightweight and easy to handle is used. For example, the recovery cable 7 has a diameter of 40 mm and a tensile strength of about 200 kN, while the ropes r1 to r4 have a diameter of 10 mm and a tensile strength of about 15 kN.

  On the other hand, as shown in FIG. 3, the recovery cable 7 has an annular shape by inserting the other end 7b into at least one of the ends 7a in the lengthwise direction. A ring 13 that can be configured is formed. In the example of illustration, the ring | wheel 13 is formed by bending the front-end | tip part 7c of the collection | recovery line 7, and bundling this front-end | tip part 7c to the collection | recovery line 7 itself with the binding body 13a. When the ring 13 is formed using the bundled body 13a, the ring 13 is arranged so that the bundled body 13a is not positioned at the coupled portion when the later-described recovery line 7 is tightened to the mooring line 4 to be coupled. To form larger.

  The formation of the ring 13 may be performed by any generally known method, and the one in which the strands 13 constituting the recovery rope 7 are knitted together and the ring 13 is formed in advance may be used. Of course. A ring may also be formed on the other end 7 b of the recovery cord 7.

  As a recovery work preparation, the above-described assembly of the recovery cable arrangement tool 8 and the recovery cable 7 is produced on the ship 6 on land or in the sea area. The single ship 6 loaded with the assembly sails to the sea area of the recovery operation and is moved for the recovery operation in the sea area where there is a tidal current T toward the floating fish reef 1.

  In the recovery operation, first, as shown in FIG. 2 and FIG. 4, the tidal current T in the site sea area is investigated, and the ship 6, the first and second recovery rope controls 10, 11, In addition, a traction tool 12 and the like are arranged. That is, the ship 6 is moved to the upstream sea area A and the assembly is dropped into the sea. When the assembly is dropped, the tidal current T from the upstream sea area A to the downstream sea area B of the floating fish reef 1 is secured in order to secure the positional relationship between the recovery cable 7 and the mooring cable 4 to be described later by towing the ship 6. In the direction intersecting with the flow direction, the assembly is dropped all at once with respect to the floating reef 1 toward one side thereof.

  When the assembly is dropped into the sea, the float ropes r1 to r3 of the first and second recovery rope control tools 10 and 11 and the traction tool 12 sink into the sea, and the recovery rope 7, the connecting rope r4, and the sea anchor 12a are underwater. Arranged.

  Next, as shown in FIG. 4, the ship 6 is moved in the upstream sea area A of the floating fish reef 1. The movement of the ship 6 is a direction crossing the direction (the direction of the tidal current T) from the upstream sea area A to the downstream sea area B of the floating fish reef 1 from one side with respect to the floating fish reef 1 where the assembly has been dropped. To the other side (opposite side). By this movement of the ship 6, the second recovery rope control tool 11 and the traction tool 12 are left on one side, and the first recovery rope control tool 10 towed by the tow rope 9 is arranged on the other side. The

  The second recovery rope control tool 11 is moved while receiving the traction action (braking action) of the traction tool 12 having the sea anchor 12 a that resists the towing of the ship 6, and is arranged on one side. That is, the first recovery rope control tool 10 is moved by towing by the ship 6, and the second recovery rope control tool 11 is moved by the traction action by the traction tool 12, whereby the first and second recovery tools are moved. The rope control tools 10 and 11 are arranged so that the recovery rope 7 intersects the mooring rope 4 in the sea in the upstream sea area A of the floating fish reef 1 so as to be accessible to the floating fish reef 1.

  In addition, in FIG. 4, 14 is a surveying ship used as needed, which is not directly related to the collection work. Instead of the survey ship 14, a buoy serving as a mark may be arranged.

  Thereafter, the first recovered rope control tool 10 is towed by the ship 6 moved from the upstream sea area A to the downstream sea area B of the floating fish reef 1, and at the same time, the second recovered rope control tool 11 and the towing tool 12. Is moved along the tidal current T, approaches the floating fish reef 1, and the recovery cable 7 approaches the mooring cable 4. The boat 6 may be moved on the tidal current T by stopping.

  At this time, the sea anchor 12 a of the traction tool 12 plays a role of receiving the tide T and pulling the second recovery rope control tool 11 toward the downstream sea area B. Thereby, the 1st and 2nd recovery rope control tools 10 and 11 arrive at the downstream sea area B of the downstream rather than the floating fish reef 1, As a result, the recovery rope 7 is distribute | arranged around the mooring rope.

  Next, as shown in FIG. 5, both ends of the recovery line 7 are lifted to the ship 6. At the time of this lifting, the towed rope 9 is used for the first recovery rope control tool 10 side to lift the recovery rope 7 at one end in the length direction.

  On the other hand, on the second recovery rope control tool 11 side, the recovery rope 7 is obtained by hooking and pulling the second recovery rope control tool 11 itself or the traction tool 12 on the sea using a rope with a club. Lift the other end in the length direction. And on the ship 6, the 1st and 2nd recovery rope control tools 10 and 11 are removed from the both ends of the recovery rope 7. FIG.

  Next, as shown in FIGS. 6 and 7, the other end 7 b is passed through the ring 13 of the one end 7 a of the recovery cable 7. Thereby, the collection | recovery line 7 is formed in the closed annular form which surrounds the mooring line 4 from the circumference | surroundings. When the other end portion 7b passed through the ring 13 is pulled, pulled and tightened, the diameter of the closed annular form of the recovery line 7 is narrowed, and the recovery line 7 is recovered from the mooring line 4 as shown in FIG. A state in which the cable 7 is tightened is obtained, and the mooring cable 4 can be pulled by the recovery cable 7.

  In order to perform the operation of tightening the mooring cable 4 with the recovery cable 7 from above the ship 6, a weight 15 for sinking the wheel 13 is provided at or around the wheel 13, and the weight 15 is attached as shown in FIG. So that one end 7a of the recovery line 7 with the ring 13 is dropped into the sea, and the other end 7b of the recovery line 7 is drawn on the ship 6 so that the ring 13 approaches the mooring line 4. What is necessary is just to continue pulling the said other edge part 7b of the collection | recovery rope 7. FIG. By the tightening operation of the recovery line 7, the recovery line 7 and the mooring line 4 are brought into a combined state in which the floating fish reef 1 can be lifted.

  Thereafter, as shown in FIG. 10, a confirmation operation for confirming the tightening state of the recovery cable 7 with respect to the mooring cable 4 is performed as necessary. This confirmation work can be carried out by operating a ROV (remotely operated vehicle) 16 using the recovery cable 7 as a guide.

  After that, the recovery line 7 is pulled up using the equipment on the ship 6. By this lifting operation, the entire floating fish reef 1 including the mooring cable 4 is recovered by the ship 6.

  In the floating fish reef collection device and collection method according to the present embodiment, the collection work can be carried out and completed by a single ship 6, so that the fuel cost can be reduced and the ship maneuvering can be achieved compared to the background art. The number of workers can be reduced, and the cost required for the collection work can be reduced.

  Since the second recovery rope control tool 11 to which the other end in the length direction of the recovery cable 7 is connected is connected to the traction tool 12 having the sea anchor 12a through the connection rope r4 in the sea, Even if the first recovery rope control tool 10 is towed via the tow rope 9, the recovery rope 7 can be prevented from lifting from the set depth, and the recovery rope 7 can be moored in a shorter time than the background art. 4 can be completed.

  Further, since the recovery line 7 is flexible in a floating state and is arranged between the floats f1 and f2 of the first and second recovery line control tools 10 and 11, it is suspended between work ships as in the background art. Compared to the case, the set depth can be appropriately maintained.

  Since a single ship 6 can be operated to carry out recovery work, compared to operating multiple work ships as in the background art, there is no need for a wide range of recovery work areas and There is no need for communication and linkage, so it does not hinder maritime traffic and the work can be simplified.

  As for the recovery rope 7, the one having the necessary lifting capacity is adopted, while the other float ropes r <b> 1 to r <b> 3, the connecting rope r <b> 4, and the tow rope 9 are thinner and lighter than the recovery rope 7. Therefore, the load at the time of moving the ship 6 is small, and the maneuverability can be improved. The recovery line 7 can be folded back to the mooring line 4 at the depth of the mooring line 4 of the floating fish reef 1 by adopting the recovery line arrangement tool 8 mainly composed of a rope operated by a single ship 6. The minimum short length is sufficient, so that the collection operation can be completed in a short time with good workability with a small amount of winding.

  Since it is a single ship 6 and there is no work to route the recovery lines to multiple work boats as in the background art, it is highly safe and for towing even in the case of changes to bad weather. It is possible to move to a retreating action only by removing the rope 9, which is also preferable for emergency measures. In addition, even after completion of tightening of the recovery line 7 with respect to the mooring line 4, since the recovery work is performed by the single ship 6, maneuvering and other operations are smoothly performed compared to the background technology in which a plurality of work ships approach each other. And can be done easily.

  Since the mooring cable 4 and the recovery cable 7 are coupled by tightening and no hardware is used, it is possible to reliably prevent the recovery cable 7 and the like from being broken by the metal fittings.

  Since the weights w1 to w3 are provided on the lower end side of the float ropes r1 to r3, the float ropes r1 to r3 can be stably lowered and placed in the sea, and the installation depth of the recovery rope 7 can be appropriately secured. .

  Since the weight 13 is provided on the wheel 13, the wheel 13 can be appropriately sent to the position of the mooring cable 4 in the sea, such as preventing the wheel 13 from being caught in the middle of the recovery cable 7, and the cable by the tightening operation. 4 and 7 can be reliably connected.

  As described above, the floating fish reef collection device and collection method according to this embodiment are low in collection work cost, can efficiently carry out collection work in a short time, are simplified in work content, and are heavy. The reduction of the handling work of the recovery line 7 can be achieved, the improvement of the recovery workability and the safety can be ensured, the recovery work area can be narrowed, and the mooring line 4 and the recovery line 7 are broken. There is an excellent effect that can be avoided.

  11 to 13 show another embodiment of a floating fish reef collection apparatus and collection method according to the present invention. FIG. 11 is a plan view showing a state in which the recovery rope is arranged in the upstream sea area of the floating fish reef. FIG. 12 is a plan view showing a state in which the recovery rope approaching the floating fish reef reaches the downstream sea area of the floating fish reef. 13 is a plan view showing a state in which both ends of the recovery rope arranged around the floating fish reef are pulled up by the ship.

  In another embodiment, as shown in FIG. 11, a floating fish reef is accessible by towing a first retrieval rope control tool 10 via a tow rope 9 by moving a ship 6. 1, when the recovery line 7 is arranged in the direction crossing the mooring line 4 in the sea, the first recovery line control tool 10 is towed by the ship 6 and downstream of the floating fish reef 1 in the above embodiment. Instead of being moved to the sea area B, as shown in FIG. 12, the first recovery rope control tool 10 is removed from the tow rope 9 and released from the ship 6, and the tidal current T toward the floating fish reef 1 is reached. It has been moved.

  By doing in this way, the 2nd recovery rope control tool 11 with which the 1st recovery rope control tool 10 and the traction tool 12 were connected is tidal current T, and is directed from the upstream sea area A of the floating fish reef 1 toward the downstream sea area B. Moved. Then, when these first and second recovery rope control tools 10, 11 reach the downstream sea area B of the floating fish reef 1, the recovery rope 7 is arranged around the mooring rope 4. At this time, the ship 6 is moved to the downstream sea area B of the floating fish reef 1 in advance.

  Next, both ends of the recovery rope 7 are pulled up to the ship 6 that has been moved to the downstream sea area B of the floating fish reef 1 in advance via the first and second recovery rope controls 10 and 11. As described above, this lifting is performed using a rope with a club. Thereafter, the first and second recovery rope operators 10 and 11 are removed from both ends of the lifted recovery rope 7, and one of the recovery ropes 7 is further removed as shown in FIGS. 6 and 7 of the above embodiment. The subsequent collection operation is continued through the other end 7b through the ring 13 of the end 7a.

  Of course, even in such other embodiments, the same effects as the above-described embodiment can be obtained. In another embodiment, since the first recovery rope control tool 10 is released from the ship 6 and moved by the tidal current T, observation of the tidal current T in the work site sea area is important, but the maneuvering can be simplified. it can.

  In any of the above embodiments, the case where there is one traction tool 12 has been described. However, the traction tool 12 is configured such that the connection rope r4 of the other traction tool 12 is connected to the float rope r3 of the traction tool 12. A plurality of may be arranged in series. If it does in this way, the drift restriction | limiting of the 2nd recovery rope control tool 11 can be adjusted, the resistance action with respect to the towing by the ship 6, the speed moved by the tidal current T, etc. can be adjusted preferably.

DESCRIPTION OF SYMBOLS 1 Floating fish reef 2 Sea bottom 3 Anchor 4 Mooring line 5 Fish reef body 6 Single ship 7 One recovery line 7a One end of recovery line 7b The other end of recovery line 9 Tow rope 10 First recovery line Control tool 11 Second recovery rope control tool 12 Traction tool 12a Sea anchor 13 Wheel 15 Weight A Upstream area of floating fish reef B Downstream area of floating fish reef f1-f3 Float r1-r3 Float rope r4 Connecting rope T Tidal current w1-w3 Float Rope weight

Claims (7)

A floating reef comprising an anchor submerged on the seabed, a mooring line connected to the anchor, and a fish reef body that is connected to the anchor and moored to the anchor and is suspended in the sea. , A floating fish reef collection device that uses a single retrieval line arranged in the sea to lift and collect,
A single ship moved in the sea area with the tide toward the floating fish reef,
A tow rope towed by the ship;
There is a float that is removably connected to the tow rope, floats in the upstream sea area of the floating fish reef and is towed by the ship, and a float rope that is suspended in the sea from the float. A first retrieval rope control unit removably coupled to the float rope;
A second recovery rope maneuver having a float floating in the upstream area of the floating fish reef and a float rope suspended from the float into the sea, the other end in the length direction of the recovery rope being detachably connected to the float rope Ingredients,
A float floating in an upstream area of the floating fish reef; a float rope suspended from the float into the sea; a connection rope connecting the float rope and the float rope of the second recovery rope control tool; and a connection rope A sea anchor having a sea anchor that pulls the connecting rope in response to a surrounding water flow, and a tow tool that restricts drift of the second recovery rope control tool;
A ring formed on at least one end of the lengthwise ends of the recovery line, the other end being inserted to form the recovery line in an annular form,
The first recovery rope control tool is moved by towing by the ship, and the second recovery rope control tool is moved by a traction action by the towing tool, and the first and second recovery rope control tools are moved. , In the upstream water area of the reef fish reef so as to be accessible to the reef fish reef, and arrange the recovery cable in a direction crossing the mooring line in the sea,
When the first and second recovery ropes reach the downstream area of the floating fish reef and the recovery ropes are arranged around the mooring lines, the first and second recovery ropes are routed through the first and second recovery ropes. The other end is passed through the ring at one end of the recovery line to be lifted by the ship, and the recovery line is formed in an annular shape surrounding the mooring line, and the annular shape of the recovery line In order to reduce the diameter of the ring, the other end of the ring is pulled so that the ring approaches the mooring line and the recovery line is tightened against the mooring line. An apparatus for collecting floating fish reef, wherein the fish reef is collected by the ship.   When the recovery cable is arranged in an upstream area of the floating fish reef so as to be accessible to the floating fish reef in a direction intersecting the mooring cable in the sea, the first recovery rope control tool is moved by towing by the ship. 2. The floating fish reef collection device according to claim 1, wherein the floating fish reef is removed from the tow rope and moved by a tidal current toward the floating fish reef.   The floating rope reef collecting device according to claim 1, wherein the rope has a diameter smaller than that of the collecting rope and is lightweight.   The apparatus for collecting floating fish reef according to any one of claims 1 to 3, wherein a weight is provided on the ring.   The floating rope according to any one of claims 1 to 4, wherein a connecting rope of another traction tool is connected to the float rope of the traction tool, and a plurality of the traction tools are arranged in series. Fish reef collection device. A floating reef comprising an anchor submerged on the seabed, a mooring line connected to the anchor, and a fish reef body that is connected to the anchor and moored to the anchor and is suspended in the sea. , A method of collecting floating fish reefs that are lifted and recovered using a single recovery line arranged in the sea,
Using the floating fish reef recovery device according to claim 1,
First, in the upstream sea area of the floating fish reef, arrange the ship, the recovery rope, the first and second recovery rope control tools, and the towing tool,
Next, the second recovery rope control tool and the traction tool are arranged on one side with respect to the floating fish reef in a direction intersecting with the direction from the upstream sea area to the downstream sea area of the floating fish reef. The towed ship is towed on the other side with respect to the floating fish reef and the first recovery rope control tool is disposed, and the recovery rope is accessible in the upstream area of the floating fish reef so as to be accessible to the floating fish reef. Placed in the direction crossing the mooring line in the sea,
Next, the ship is moved from the upstream sea area to the downstream sea area of the floating fish reef, and the traction tool is moved by a tidal current, and the first and second recovered rope control tools are moved downstream of the floating fish reef. And arrange the recovery line around the mooring line,
Next, in the downstream area of the floating fish reef, the first and second recovery ropes are removed from both ends of the recovery rope that is pulled up to the ship via the first and second recovery ropes. ,
Next, after forming the recovery line into an annular shape surrounding the mooring line through the other end of the ring at one end of the recovery line, the diameter of the annular form of the recovery line is narrowed. The recovered cable is tightened with respect to the mooring cable,
Thereafter, the recovery rope is pulled up, and the floating fish reef including the mooring rope is recovered in the ship. A floating reef comprising an anchor submerged on the seabed, a mooring line connected to the anchor, and a fish reef body that is connected to the anchor and moored to the anchor and is suspended in the sea. , A method of collecting floating fish reefs that are lifted and recovered using a single recovery line arranged in the sea,
Using the floating fish reef recovery device according to claim 2,
First, in the upstream sea area of the floating fish reef, arrange the ship, the recovery rope, the first and second recovery rope control tools, and the towing tool,
Next, the second recovery rope control tool and the traction tool are arranged on one side with respect to the floating fish reef in a direction intersecting with the direction from the upstream sea area to the downstream sea area of the floating fish reef. The towed ship is towed on the other side with respect to the floating fish reef and the first recovery rope control tool is disposed, and the recovery rope is accessible in the upstream area of the floating fish reef so as to be accessible to the floating fish reef. Placed in the direction crossing the mooring line in the sea,
Next, the first recovery rope control tool is removed from the tow rope and released from the ship,
Next, the first recovery rope control tool and the second recovery rope control tool connected to the traction tool are moved by a tidal current from the upstream sea area to the downstream sea area of the floating fish reef. A second recovery rope control tool is made to reach the downstream sea area of the floating fish reef, and the recovery rope is arranged around the mooring line,
Next, the first and second recovery rope maneuvers from both ends of the recovery rope, which are lifted to the ship previously moved to the downstream area of the floating fish reef through the first and second recovery rope controls. Remove the tool,
Next, after forming the recovery line into an annular shape surrounding the mooring line through the other end of the ring at one end of the recovery line, the diameter of the annular form of the recovery line is narrowed. The recovered cable is tightened with respect to the mooring cable,
Then, the recovery rope is pulled up, and the floating fish reef including the mooring rope is recovered in the ship.

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