JP2009055661A - Method and arrangement for laying elongated object such as cable on seabed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To lay an elongated object correctly at a predetermined position while keeping correlation with one or a plurality of existing elongated objects regardless of the undulation of seabed or the tide. <P>SOLUTION: An elongated object is guided to the neighborhood of seabed by an elongated object distribution apparatus suspended substantially vertically from a laying work ship such that the height position can be adjusted arbitrarily, and then fed out near the seabed thus laying the elongated object correctly at a predetermined laying position. The elongated object distribution apparatus is provided at least one guide slider which captures the elongated object and restricts free movement thereof. The elongated object fed out from the work ship is lowered substantially vertically to the neighborhood of seabed by the elongated object distribution apparatus and then fed out from the lower end of the guide slider onto the seabed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a laying method and a laying apparatus for laying various elongated bodies such as electric wires and communication cables on a relatively shallow water bottom.

  Conventionally, various long objects such as electric wires and communication cables are laid on the bottom of the water by using a cable laying work ship such as a cable laying base on a relatively shallow bottom such as between a mainland and remote islands, between remote islands, or a lake. Methods and apparatus for doing so are well known. Such a cable laying method is disclosed in, for example, Patent Documents 1 and 2 or Patent Document 3 previously disclosed by the present applicant and the like. A conventional cable laying base boat has a shallow draft structure with a flat upper surface, a cable storage device that winds and accommodates cables in a coil shape on the flat upper surface, and a cable feeding device that feeds each cable into the sea. The cable is fed out from the stern of the work boat, descends to the bottom of the water by its own weight, and lays down on the bottom of the water.

  The cable that sinks under its own weight has a gap between the sinking position and the feeding position due to the traveling speed of the work boat, buoyancy, tidal current, and the like, and it has been extremely difficult to lay the cable accurately at a predetermined position. For this reason, conventionally, an operator divides the sinking cable to adjust the laying position. However, such adjustments by diving workers have led to significant traffic and increased work time and costs. In particular, when many cables are already laid, the installation space for new cables is limited, and when the cables are laid between the mainland and the island reef, where the water is relatively shallow, and for transmitting three-phase AC power. When laying phase-phase AC transmission cables on the sea floor, it is necessary to accurately determine the correlation position between the new cable and the old cable or the correlation position between each cable of the three-phase AC cable. The laying work for accurately obtaining the correlation position of the cable is a work that requires many diving workers.

  Patent Documents 1 and 2 propose a method of monitoring the tension of the cable in order to avoid the deviation of the cable due to a tidal current or the like. It is not a thing. In particular, a number of existing cables are laid between the mainland and the island reef, and in the situation where the space for new cables is limited, it can be laid while checking the location of the existing cables. Therefore, there arises a problem that the separation of the cable cannot be maintained as originally designed. In addition, since the diving worker checks and adjusts the distance between the cables, diving may not be possible due to the influence of tidal currents, etc., and there is a problem that the process becomes longer and the burden on the diving worker increases. .

JP-A-5-344624 JP-A-6-91694 JP 2004-166433 A

  In such a conventional laying method using free descent due to its own weight, it is extremely difficult to accurately lay a long body such as a power cable at a predetermined position. It is an object of the present invention to restrain the scale body near the bottom of the water with a guide device and lower it so that the distance between the guide device and the bottom of the water is as small as possible to avoid undulation of the bottom of the water and displacement of the laying position due to tidal currents.

   In addition, the present invention enables laying while maintaining the correlation between the newly installed long body and the old long body. Furthermore, it is possible to lay a plurality of elongated bodies such as a three-phase power cable at the same time while maintaining a substantially constant interphase spacing, regardless of external factors such as water bottom relief, tidal current, and wave height.

  In order to solve the above-mentioned problems, the present invention guides a long body to the vicinity of the bottom of the water by means of a long body distribution device that is suspended substantially vertically from the laying work boat and whose height position can be arbitrarily adjusted. The long body can be accurately laid at a predetermined laying position by feeding out the long body. The long body distributor is provided with at least one guide slider that captures the long body and restrains free movement. The long body fed from the work boat is It is lowered almost vertically to near and is fed out from the lower end of the guide slider to the bottom of the water. By providing a plurality of guide sliders at intervals in the distributor, each guide slider guides a plurality of elongated bodies to the vicinity of the water bottom while maintaining an interphase distance corresponding to the distance between the guide sliders. It is possible to lay out a plurality of long bodies while maintaining a predetermined correlation by feeding them out from the body distributor. The guide slider is preferably composed of a long body guide portion in which a plurality of rings are arranged in a cylindrical shape at intervals. However, the guide slider is not limited to this, and the long body is captured from the work boat to near the bottom of the water. What is necessary is just to be able to prevent the elongate body from freely moving without any restraint due to the traveling speed of the work ship, tidal currents, and the like.

  The long body distributor is composed of a horizontal frame connected to a suspension device such as a winch installed on a work boat and at least one guide slider attached to the horizontal frame to avoid the influence of water pressure and tidal current. Preferably, it is made of a pipe material made of metal or plastic. The guide slider is configured to be openable and closable in order to accommodate the long body therein. In addition, on the upper part of the guide slider, a guide means called a bell mouth for guiding the long body fed from the work boat via the shooter to the guide slider is arranged. The horizontal frame has a predetermined horizontal length and projects in a wing shape in the width direction so that the distributor can maintain a stable horizontal position in water. As will be described later, the distribution device controls the suspension device based on information of various measurement devices, visual recognition means, position measurement devices, etc., corrects the suspension depth, front / rear / left / right inclination, etc. Adjust the laying position so that the long body can be laid.

  The long body distributor is preferably equipped with at least one underwater camera so that the state of the extended long body, the position, the state of the bottom of the water, etc. can be confirmed on the work boat and correlated with the existing long body. The relationship or the correlation between the long bodies to be laid is confirmed, and the adjustment can be made by maneuvering the work ship or adjusting the position of the guide slider. Furthermore, in the long body distributor, various instruments such as a rolling / pitching detector, a gyrocompass, an underwater positioning device, an interphase spacing monitoring sonar, an altimeter, and a depth meter are installed as required. Tension information, long body descent status, forward / backward / left / right tilt and rotation direction of distribution device, relative positional relationship between distribution device and work boat in water, distance between long bodies fed out from distribution device, water depth of distribution device, etc. Based on this information, the ship maneuvering of the work vessel is controlled and managed, and the long body distributor is moved up and down to keep the long body distributor at a substantially constant distance from the bottom of the water. While laying the long body more accurately.

  The laying work ship is provided with a plurality of elongate body accommodation devices for accommodating elongate bodies such as power transmission cables and communication cables on the ship so that each elongate body can be delivered, and the cables fed from the accommodation devices are connected to the bottom of the water via the distribution device. Can be guided and laid. The laying work boat is preferably a shallow working draft berth, and is arranged at at least four locations on the front, rear, left and right of the trolley, and a marine vessel maneuvering device (DPS, dynamic positioning system) having a global positioning system (GPS). The ship maneuvering is controlled by a ship maneuvering means called a thruster. However, the laying work ship is not limited to a work table ship with a shallow draft, but may be a work ship having a normal draft, and it is essential that a ship handling support device such as DPS is provided. Not something to do. A work boat is usually towed by a tugboat, and is anchored by a thruster or a plurality of dredgers. Not limited to. A trolley with an engine / propeller, a trolley with a pusher boat, or the like may be used. When these work ships are used, it is preferable to accurately define their positions by an anchoring method.

  The guide slider is substantially curved into a slide base and formed into a protruding trapezoidal shape. The guide slider is pivotally attached to the elongated body distributor via a rotating shaft, and is rotated approximately 90 ° in a substantially horizontal plane around the rotating shaft. The guide slider is opened and the cable is attached to the long body distributor. The bell mouth is formed in a substantially basket shape penetrating vertically, and a part of the side surface is configured to be openable and closable. The bell mouth is also formed of a pipe material like the guide slider and the horizontal frame.

  In the present invention, a long body is guided near a water bottom by a guide slider of a long body distributor that is suspended from a laying work ship substantially vertically and whose height position can be arbitrarily adjusted. Therefore, when laying a long body, the slack of the long body can be reduced, the displacement of the laying position due to the slack can be suppressed, and the long body can be accurately laid at a predetermined laying position. It becomes possible. In addition, by using a plurality of guide sliders arranged with a predetermined interphase spacing, it is possible to lay while maintaining a correlation between a plurality of elongated bodies. In addition, by installing an underwater camera, etc. on the distribution device, you can lay while confirming the laying position, laying while maintaining the correlation with the existing cable and the correlation like the three-phase power cable. Cables that need to be installed can be installed at the same time, while reducing the work load of diving workers by drastically reducing the number of interphase inspections by diving workers, greatly increasing the installation time. It becomes possible to shorten to.

  Embodiments of the present invention will be described below in detail with reference to the accompanying drawings (FIGS. 1 to 13). The long body bottom laying device (1) of the present embodiment has a long body (L) such as a power transmission cable (PC) or a communication cable (CC) on the bottom of the water in a relatively shallow water area. A laying work ship for laying, and the laying work ship is preferably controlled by a ship maneuvering support device (DPS, dynamic positioning system) having a global positioning system, and by a signal from the dynamic positioning system, the front, rear, left and right of the carriage It is composed of a shallow drafting work platform ship (2) capable of driving and adjusting the position by driving at least four thrusters installed on the water.

  The laying work boat is not limited to a shallow working table ship equipped with such a thruster. It may be a barge that moves by anchoring method that moves forward by manipulating a plurality of dredging wires connected to the tip, a barge with an engine / propeller, a barge with a pusher boat, and a normal draft. A self-propelled ship having In short, a ship having any structure and mechanism may be used as long as it is a work ship that can move at a fine speed for laying a long body and has a function capable of finely adjusting the position in the front-rear and left-right directions.

  Referring to FIGS. 1 to 3, the laying work platform ship (2) has a shallow draft, is long in the front-rear direction, has a flat upper surface, and is provided in a region extending from the bow (3) of the upper surface to the center in the front-rear direction. A plurality of long-body accommodation devices (4a), (4b), (4c), and (4d) for winding and accommodating the respective long-body bodies (L) of each of the long-body bodies (L) are arranged, and these long-body accommodation devices (4a) (4b) ) (4c) (4d) through the long body passage (5a) (5b) (5c) formed by the long body passage (5a) formed in a long and substantially linearly inclined slide body. Guided toward the rear of the laying work platform ship (2).

  The long bodies drawn out from the long body accommodation devices (4a) and (4b) are all transmission cables (PC), and these are elongated bodies that extend horizontally on the carriage while being turned back in an arcuate path. It is guided backward through the passages (5a) and (5b). The long body fed out from the long body accommodation devices (4c) and (4d) is a communication cable (CC) and is guided rearward through the long body passage (5c).

  The long body (L) guided to the vicinity of the back of the laying work table ship (2) is sent further back by the long body feeding devices (6a), (6b), (6c), and (6d). It is drawn out into the water from a long body feeding shooter (7) arranged at the rearmost part of the ship (2). A long body tension management device (9) for managing the tension of the long body (L) is disposed below the long body feeding shooter (7).

  A suspension device (11a) (11b) configured to be able to wind the wire (10a) (10b) is provided above the long body feeding shooter (7) at the rearmost part of the laying work platform (2). Wires (10a) and (10b) each having a gantry (12) mounted at appropriate positions on the left and right sides in the width direction of the ship are fixedly attached to the suspension devices (11a) and (11b). An elevating-type elongate body distributor (13) that guides the elongate body (L) to the vicinity of the bottom of the water is attached to the lower end of the elevating device, and the elevating-type elongate body distributor (13) can be raised and lowered freely. Means.

  In addition, the elevating long body distributor (13) is provided with the tip of the wire (15) extending from the winding device (14) disposed at the center of the bow (3) of the laying work platform ship (2). Sway to the left and right of the elevating elongate distributor (13) and swing backward to the elevating elongate distributor (13) when the laying work platform ship (2) moves forward, etc. And the swing in the vertical plane is restricted.

  Referring to FIGS. 4 to 8, the elongate elongate distributor (13) includes a horizontal frame formed of a metal or plastic pipe material and a guide slider in order to reduce the influence of water pressure and tidal current. It consists of. The horizontal frame (16) is for improving the stability of the elevating elongate distributor (13) in water, and has a length substantially the same as the width of the laying work platform ship (2). Wires (10a) and (10b) from the suspension devices (11a) and (11b) disposed on both sides of the stern of the work platform ship are connected to the left and right ends, respectively. It is suspended so that it can be raised and lowered.

  Three guide sliders (17a), (17b), and (17c) for guiding through the elongated body (L) are disposed in the lower part of the horizontal frame (16). In the vicinity of the entrance at the upper end of each guide slider (17a) (17b) (17c), there is a bell mouth (18a) (18b) (18c), respectively. Each of the guide sliders (17a), (17b), and (17c) is formed in the shape of a slide that protrudes from the stern of the laying work table ship (2) toward the rear and substantially curved into a slide shape. The curved portions (19a), (19b), and (19c) of (17a), (17b), and (17c) are each provided with a plurality of rollers (20) that are horizontally arranged at appropriate intervals, and the cable guide that guides the guide slider. Prevents damage. The guide slider (17c) located at the center is a slider for guiding a communication cable having a relatively small diameter, and since the degree of bending can be increased, the cable is discharged at a position closer to the water bottom. Longer than the left and right guide sliders. The communication cable is lighter in weight than the power cable, so if it is released from the same position, the position of the detent point at the bottom of the water becomes the rear position away from the power cable and is easily affected by tides, etc. It is formed longer than the left and right power cable guide sliders so that the cable is discharged at the position.

  The left and right guide sliders (17a) and (17b) are sliders for guiding a three-phase AC power cable, and the interval corresponds to the inter-phase spacing of the power cable. In the illustrated embodiment, the three-phase cable The two cables are laid, and after laying these two cables, again two cables are laid along the laid cables by this apparatus, for a total of 4 cables. The three cables are laid as shown in FIG. 13 to achieve the laying of the three-phase cables (PC1, PC2, PC3) provided with the spare cable (PC4). Each of the long bodies (L) passed through the inside of these three guide sliders (17a), (17b), and (17c) is configured so as to be freely extended while maintaining a constant interval between them. . The number and interval of the guide sliders can be changed as appropriate according to the type and number of cables to be laid.

  Each guide slider (17a) (17b) (17c) is pivotally attached to the elevating elongate distributor (13) via a substantially vertical rotation shaft, and the rotation shaft (21a) (21b) (21c) It is configured so that it can be rotated by approximately 90 ° in a substantially horizontal plane around the center, and its rear end can be opened in the width direction of the ship. Each of the bell mouths (18a), (18b), and (18c) formed on each side is configured so that a part of the side thereof can be opened and closed, and the guide sliders (17a) (17b) (17c) and the bell mouths (18a) (18b) ) (18c) is opened, the long body (L) can be easily mounted on the elevating-type long body distributor (13). After mounting, the guide sliders (17a) (17b) (17c) and By closing and returning the bell mouths (18a), (18b), and (18c), it is possible to pass a plurality of elongated bodies (L) through the elevating-type elongated body distributor (13) at predetermined intervals. Configured to be able to.

  In the illustrated embodiment, the apparatus for laying two power cables and one communication cable has been described. However, the apparatus may be a long body distributor having a single guide slider (17). Of course. According to the laying method and apparatus of the present invention, the elongate body distributor provided with the guide slider is guided almost vertically from the work ship to near the bottom of the water by the suspension device. By controlling the position and the hanging position, the cable laying position can be accurately controlled. As a result, for example, even when many cables are already laid and the position where new cables are laid is limited, the correlation position with the existing cables is maintained by using a visual device such as an underwater camera. However, new cables can be laid more accurately. If a plurality of guide sliders are attached as described above, a plurality of cables can be laid while maintaining the correlation position.

  Referring to FIGS. 9 to 11, the long body distributor (13) has an underwater camera (22a) (22b) (22c) (22d) for monitoring the descending state of the long body (L) at each part thereof. And underwater lights (23a) (23b) (23c) that illuminate the camera's field of view, and a rolling / pitching detector and gyrocompass (24) that measure the front / rear / left / right tilt and rotational orientation of the elongated body distributor (13) And the underwater positioning device (25) for grasping the relative positional relationship between the long body distributor (13) and the laying work platform ship (2) in water, and the long body distributor (13). Interphase interval monitoring sonar (26) for monitoring the distance between each long body (L) or existing cables, altimeter (27) and water depth gauge (28) for measuring the water depth of the long body distributor (13), etc. Sensor devices, and information obtained from these sensor devices and the tension obtained from the long body tension management device (9) disposed below the long body feeding shooter (7). Based on the force information, in the control room (29) arranged on the laying work platform (2), the maneuvering of the laying work platform (2) and the operation of the elongate elongate distributor (13) are performed. Configured to control and manage. The underwater camera (22d) is a movable type to which a light is added.

  Thus, when the elongate elongate distributor (13) is submerged in water and the elongate elongate distributor (13) is laid down, the elevating elongate distributor (13) is moved up and down while controlling the operation. Thus, a plurality of long bodies (L) are laid simultaneously while keeping the distance from the bottom of the water substantially constant.

  At the start of the long body laying operation, as shown in FIG. 12, first, a large number of buoys (30) are attached to the long body (L) placed on the laying work platform (2), and the tip thereof is attached. Tow to land by tugboat and connect to a fixed part on land. The landing work of the long body (L) is performed individually for each long body (L). Then, at the stern of the laying work table ship (2), each of the long bodies (L) sunk under their own weight in the water is opened in advance. The guide slider (17a) of the elevating long body distributor (13) (17b) (17c) and bell mouths (18a) (18b) (18c) are housed inside and closed to allow a plurality of elongated bodies (L) to be placed in the elevating elongated body distributor (13). The state is inserted at a predetermined interval.

  After that, while controlling the laying work table ship (2) by the ship maneuvering support device having the earth positioning system, the plurality of thrusters are operated to advance the laying work table ship (2). (L) is drawn out into the rear water of the laying work platform ship (2) and gradually laid on the bottom of the water along the laying route.

  As shown in FIG. 13, the long body (L) of the present embodiment has three-phase structures for the left and right guide sliders (17a) and (17b), respectively, during the first laying operation (S1). Pass two of the AC power transmission cables (PC1) and (PC2), lay the cable through the communication cable (CC) in the center guide slider (17c), and then follow the laying route equivalent to the first time. As the second laying operation (S2), the left and right guide sliders (17a) and (17b) are each passed through the remaining one cable (PC3) and one spare cable (PC4) for three-phase AC. The central guide slider (17c) is laid through a communication cable (CC2). In this way, in total, lay three transmission cables (PC1) (PC2) (PC3) for three-phase AC, two communication cables (CC) and one spare transmission cable (PC4) I can do it.

  The long body water bottom laying apparatus of the present embodiment and the long body water bottom laying method using the same are configured as described above, but of course, the present invention is not necessarily limited thereto. Various modifications can be made without departing from the spirit of the invention.

Side view of the entire elongate body bottom laying device Plan view of the entire elongate water bottom laying device Rear view of the entire elongate body bottom laying device Perspective view around the stern of the laying work platform ship in the long body underwater laying device Perspective view of elevating-type elongate body distributor of the elongate body bottom laying device The perspective view which shows the state which has opened the side surface of a bell mouth, rotating the guide slider of the said elevating-type elongate body distribution apparatus 90 degrees The perspective view which shows the process in which a long body is installed in the raising / lowering elongate body distribution apparatus of the state of FIG. The perspective view which shows the state which returned the guide slider and the bell mouth from the state of FIG. 7, and installed the elongate body in the elevating-type elongate body distribution apparatus. The top view which shows the installation position of various sensor apparatuses arrange | positioned at the elevating-type elongate body distribution apparatus Side view showing installation positions of various sensor devices arranged in the elevating-type long body distributor The front view which shows the installation position of various sensor apparatus arrange | positioned at the same elevating-type elongate body distribution apparatus The perspective view seen from the stern side of the laying work platform ship showing the state where the long body with a number of buoys attached to the land is being sent to the land in order to fix the long body to the land Laying schematic diagram showing a long body laid by the first laying work and a long body laid by the second laying work

Explanation of symbols

1 Long water bottom laying device 2 Laying work platform ship 3 Bow
4a Long body container
4b Long body container
4c Long body container
4d long body container
5a Long passage
5b Long passage
5c Long body passage
6a Long body feeding device
6b Long body feeding device
6c Long body feeding device
6d Long body feeding device 7 Long body feeding shooter 8 Stern 9 Long body tension management device
10a wire
10b wire
11a Suspension device
11b Suspension device
12 frame
13 Elevating long body distributor
14 Winding device
15 wire
16 horizontal frames
17a Guide slider
17b Guide slider
17c Guide slider
18a bellmouth
18b bellmouth
18c bellmouth
19a Curved part
19b Curved part
19c Curved part
20 Laura
21a Rotating shaft
21b Rotating shaft
21c Rotation axis
22a underwater camera
22b underwater camera
22c underwater camera
22d underwater camera
23a underwater light
23b underwater light
23c underwater light
24 Rolling / pitching detector and gyrocompass
25 Underwater positioning device
26 Interphase spacing sonar
27 Altimeter
28 depth gauge
29 Control room
30 Buoy
PC power cable
PC1 power transmission cable
PC2 power cable
PC3 power transmission cable
PC4 Power reserve cable
CC communication cable L Long body
S1 First installation work
S2 First installation work

Claims (13)

  The long body is suspended from the laying work boat almost vertically and the long body is guided to the bottom of the water by the long body distributor that can adjust the height position arbitrarily, and the long body is drawn out from the long body distributor near the bottom of the water. A method for laying a long body such as a cable, wherein the long body is laid at a predetermined laying position.   The long body distributor is provided with at least one guide slider that captures the long body and guides it while restraining free movement, and guides the long body fed from the laying work ship to near the bottom of the water. The laying method according to claim 1, wherein the laying method is extended from the lower end of the guide slider to the bottom of the water for laying on the bottom of the water.   A plurality of guide sliders are provided at least at predetermined horizontal intervals in the horizontal direction, and a plurality of long sliders are simultaneously guided and laid by the plurality of guide sliders while maintaining a correlation. The laying method according to claim 1 or 2.     The laying work vessel consists of a shallow draft boat controlled by a ship maneuvering support device (DPS) with a global positioning system (GPS), and is advanced while adjusting the position at a slow speed using multiple thrusters or anchoring methods. 4. The laying method according to claim 1, wherein the laying work is performed.     Information on tension from the long body, information on the descending state of the long body, front / rear / left / right tilt and rotation direction information of the distributor, information on the relative position of the distributor and the work boat in the water, and the length fed out of the distributor Collects information on the distance between the body and other long bodies, information on the water depth of the distribution device, etc., and controls and manages the maneuvering of the laying work ship based on these information, and moves the long body distribution device up and down. The laying method according to any one of claims 1 to 4, wherein the laying method is maintained at a substantially constant height position from the water bottom of the elongated body distributor.   Equipped with a long body accommodating device that accommodates a plurality of long bodies such as a plurality of power transmission cables and communication cables so that they can be drawn out, and route the long body accommodated in the long body accommodating device while moving forward into the rear water. The laying work ship is provided with a long-body distribution device suspended by a suspension means so that it can be moved up and down freely, and the distribution device captures the long body freely. An apparatus for laying a long body comprising at least one guide slider for guiding the long body to near the bottom of the water while restraining the movement.   In the long body distributor, a plurality of guide sliders are arranged with a predetermined interphase spacing, and the plurality of long bodies are individually guided by the guide sliders, while maintaining the correlation of the long bodies. 7. The laying apparatus according to claim 6, wherein the laying apparatus is extended to the bottom of the water and laid at the same time.     The long body dispensing device includes an underwater camera that monitors the descending state of the long body, an underwater light that illuminates the field of view of the camera, a rolling and pitching detector that measures the front and rear, right and left tilts and rotation directions of the dispensing device, and A gyrocompass, an underwater positioning device for grasping a relative positional relationship between the distribution device and the carriage in the water, an interphase interval monitoring sonar for monitoring an interval between the respective long bodies fed from the distribution device, 8. The laying device according to claim 6, wherein sensor devices such as an altimeter and a depth meter for measuring the water depth of the distribution device are disposed.     In order to improve the stability of the distributor in water, the elongated body distributor has a horizontal frame extending in the width direction of the work ship, and a plurality of members for guiding the elongated body into the distributor. The guide slider is formed in the shape of a slide that protrudes from the stern of the laying work vessel toward the rear in a substantially curved shape. The laying apparatus according to any one of claims 6 to 8, further comprising a plurality of rollers fixed horizontally at appropriate intervals in the curved portion of each slide-shaped guide slider.   Each guide slider formed in the shape of a slide that is substantially curved and protruded into a slide shape is pivotally attached to the elevating-type elongate body distributor via a substantially vertical rotation shaft, and is substantially in a horizontal plane around the rotation shaft. , And the rear end portion thereof can be opened in the width direction of the ship so that the long body can be individually inserted into the guide slider by opening the guide slider. The laying device according to claim 9, wherein   The laying apparatus according to claim 9, wherein the bell mouth is formed in a substantially basket shape penetrating vertically, and a part of a side surface of the bell mouth is configured to be openable and closable.   The suspension device is composed of a pair of winches arranged at intervals in the width direction of the laying work ship, and the tip ends of the wires are connected to both side ends of the horizontal frame. Laying equipment. The long body distributor is connected to a wire extending so as to be rewound and unwound from a suspension device disposed in the center of the bow of the laying work table ship, and suppresses the swing of the long body distributor. The laying apparatus according to claim 9, which is configured as described above.

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