KR101877184B1 - Installation method of shipwreck artificial reef using air-bag - Google Patents

Abstract

The present invention relates to an installation method for a fish shelter of a sunken vessel. The installation method for a fish shelter of a sunken vessel removes a pollution source by creating a part or a whole of an inner space of a hull as an empty space and tows a waste vessel in which ballast concrete is placed on an inner bottom of the hull and is hardened, to a predetermined zone. The installation method for a fish shelter of a sunken vessel sinks the waste vessel onto a sea bed of the predetermined zone and uses the sunken vessel as an artificial fish shelter. Specifically, multiple airbags are arranged to be dispersed across a front upper part on the left and right forming the hull and a deck part in a disposal work of the waste vessel on the ground. The multiple airbags are connected to the hull, and compressed air is injected into each airbag just before a waste vessel sinking work on the sea using a barge. So, the airbag is expanded as much as a predetermined volume. Also, seawater flows into the hull so that the waste vessel is sunken to the sea bed with the airbag expanded. And each airbag is separated from the waste vessel and collected. Therefore, the installation method for a fish shelter of a sunken vessel can lower a sinking load and a sinking speed generated while the waste vessel is sinking onto the sea bed, at a proper level using the airbag′s buoyancy. So, the installation method for a fish shelter of a sunken vessel enables a user to safely and accurately perform an installation work of the fish shelter of the sunken vessel. The installation method for a fish shelter of a sunken vessel also can largely distribute to a reduction of installation costs by miniaturizing a crane installed in the barge to install the fish shelter of the sunken vessel.

Description

{Installation method of shipwreck artificial reef using air-bag}

In the present invention, a part or all of the internal space of the hull is formed as an empty space to remove a source of contamination, and a ballast concrete is placed in the inner bottom of the hull to cure the waste ship into a specific water area. The present invention relates to a method and a device for a spiral rewinding apparatus capable of lowering a sedimentation load and a sedimentation velocity generated during a sinking of a wrecked ship to an appropriate level by using buoyancy of an air bag.

In general, artificial fish is an artificial structure that is installed in the sea to provide habitat for aquatic organisms such as various fishes, plaques, and algae. It protects the fisheries from the trawler with high fishing ability, It is used for the purpose of nurturing fishery resources by establishing spawning grounds and hiding place for shellfish.

The artificial fish as described above can be roughly classified into a sink type in which a structure is installed on the seabed ground and a buoy type fish reed in which the structure is moored in the sea. Typical examples are forced fish reefs (steel fish reefs) formed of multi-layered frame structures having a height of about 10 m or so, using a super- or hemispherical artificial reef or steel frame.

In addition, in the case of needlework reptiles that are used as artificial reeds by submerging the wrecked ship to the seafloor as another submerged reptile, environmental pollution caused by oil, paint components or other harmful components remaining in the wrecked ship The facility has been gradually reduced, but recently, the use of needlework reptiles has been highlighted for the purpose of underwater experience for divers and the formation of fishing rods.

The above-mentioned sinking reptiles are to maintain the overall appearance of the abandoned ship, from the hull including the deck and the left, right and bottom, to the upper structure including the wheelhouse, A part of the main pollutant source such as engine room is cut out to form an empty space or the inside of the hull is formed as an empty space to remove the pollution source and then a ballast concrete is laid on the inner bottom of the hull, On the left and right sides and on the deck, openings for the communication of seawater and access to the diver are formed in several places.

After completion of the preparatory work on the ground in the above manner, the pulmonary ship is towed together with the barge to move the facility of the cochlear reptile to the required water area, and then the pulmonary vessel corresponding to the upper portion of the ballast concrete The left and right sides of the ship are cut to a predetermined size so that seawater flows into the inside of the hull so that the wrecked ship is submerged to the sea floor. In this process, And if necessary, a pump may be installed on the barge line to further inflow seawater into the hull of the waste ship.

However, in the conventional method as described above, that is, in the case of winding the pulmonary ship to a chain or putting the lifting loop on the pulmonary ship and using the crane installed on the barge to lower the pulmonary ship to the sea floor, Assuming that the total load of the contained ship is about 1000 tons, a large crane of at least 1,500 tons should be installed on the barge so that the settling load and settling velocity of the ship can be properly controlled. There is a problem in that a considerable cost burden is incurred.

More specifically, the daily use cost of a barge equipped with a large crane with a capacity of 1,500 tons is about 30 million won, the barge line is towed to a water area where a needling facility is required, and then a crane is used It is assumed that the total operation period from reintroduction of the abandoned ship to returning the barge takes at least 5 days to 7 days. The use of barges and cranes is equivalent to about 150 million won to 200 million won It will be costly.

When the crane is not used for the purpose of avoiding the above-mentioned cost burden, the pulsating vessel collapses at a very high speed and collides with the seabed surface strongly during the infiltration operation in which the pulsating vessel sinks to the sea floor, Of the ship is damaged, the damaged structure of the ship is damaged or disturbed, or the ship is installed in a state where the ship can not maintain the proper upright position and is laid sideways. This leads to a difficult problem.

On the other hand, the marine work to cut the left and right side lower part corresponding to the upper part of the ballast concrete so as to sink seawater into the inside of the hull and sink the waste ship to the sea floor, As a result, the work itself has become a very dangerous and troublesome work requiring skill, and the risk of various safety accidents in the process of performing the work has also been very high. As a result, And it has been causing many troubles in the rapid and safe incarnation of

Korea Patent No. 10-0334332

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide an airbag system, Then, compressed air is injected into each airbag by the barge to inflate the airbag by a predetermined volume immediately before the marine embarkation operation at sea, and thereafter, seawater is introduced into the inside of the hull, The airbag is submerged with the inflated airbag, and then each airbag is separated from and withdrawn from the waste ship so that the sedimentation load and the sedimentation velocity that occur during the sinking of the waste ship to the seabed surface are calculated by using the buoyancy of the airbag And to make it possible to make the facilities of The present invention provides a method of providing a bedding arrangement using an air bag so as to contribute to a reduction in facility cost as well as a miniaturization of a crane installed on a barge for a facility of a bedding reed, It is a technical challenge.

In addition, a flange hole is formed at a predetermined interval along the longitudinal direction of the hull at the lower left and right sides of the ship during the disposal of waste ships on the land, and a pipe-shaped flooded flange is connected to each flange hole, The flange cover or the opening / closing valve is assembled so as to be watertight to the outside or the inside of the hull so that the flange cover can be separated from the flooded flange during the marine vessel abduction work in the sea, It is possible to swiftly and safely sink the waste ship into the sea floor by introducing seawater into the inside of the ship by a relatively simple operation of opening the opening / closing valve of the ship, and the water depth in the process of sinking the waste ship from the sea surface to the sea floor The amount of compressed air injected through the airbag is increased stepwise The key is that it is another aspect of the way through, ever prevented by the volume reduction and decreased buoyancy of the air bag due to pressure, to further secure the needle point eocho facilities and accurate work.

SUMMARY OF THE INVENTION The present invention as a means for solving the above technical problems is a method of controlling a ballast water supply system in which a part of or a whole of a space inside a hull of a waste ship is formed into an empty space to remove a source of contamination and a ballast concrete is placed in the inner bottom of the hull, A pulsed ship conveying step of towing a pulsed ship which has been completed on land and moving the facility to a water area where the facilities of the bedding reptile are required and a step of piercing a predetermined size hole on the left and right side portions of the pulsed ship corresponding to the upper portion of the ballasted concrete A method for installing a sparge reptile in which a wreck is submerged to the sea floor by allowing seawater to flow into the hull, the method comprising the steps of: To several tens of airbags, and when each airbag is connected to the hull And the total buoyancy provided by each airbag is 50 to 130% of the total load of the ship including the ballast concrete, and the marine operation step includes an air compressor and a pneumatic distributor installed on the barge, An inflating step of inflating each airbag by a predetermined volume by injecting compressed air into each airbag by using the airbag inflated by the airbag; And an airbag separating step of separating the respective airbags from the waste ship seated on the seabed surface.

In a more preferred embodiment, at least two or more flange holes are formed in the left and right side lower portions of the upper portion of the ballast concrete along the longitudinal direction of the hull, The flange pipe is integrally connected to the hull in a state of being inserted into the corresponding flange hole. The flange pipe is integrally connected to the flange pipe. Wherein the flooded ship is flooded by separating the flange cover from the flange pipe of the flooded flange or by opening the on-off valve to allow seawater to flow into the inside of the hull, Wherein the air bag is used for injecting compressed air, A socket mechanism for pneumatic coupler for injecting the compressed air, mounting means for connecting the inflated bag to the hull and valve mechanism for discharging the compressed air are respectively installed outside the inflated bag inflated to a predetermined volume In the step of flooding the pulmonary vessel, the crane installed on the barge is used to maintain the posture and balance of the pulmonary vessel from the sea level to the bottom of the sea floor, while the pulmonary vessel is submerged from the sea surface to the sea floor The amount of the compressed air injected through the airbag is increased stepwise in proportion to the depth of the water layer which gradually becomes deeper in the process, thereby reducing the volume of the airbag caused by the water pressure and preventing the deterioration of the buoyancy.

According to the present invention as described above, by lowering the sedimentation load and sedimentation velocity generated during the sinking of the waste ship to the seabed surface to an appropriate level using the buoyancy of the airbag, And it is possible to make the crane installed on the barge line small for the facility of the wing reptile, thereby contributing to the reduction of the facility cost.

Particularly, the relatively simple operation of towing the waste ship to the waters requiring the facilities of the wing reptile and then separating the flange cover from each immersion flange or opening the opening / closing valve of each immersion flange allows the seawater to flow into the inside of the hull Therefore, it is possible to perform the invasion work of the waste vessel more rapidly and safely than the existing system in which the left and right side lower portions are cut at the sea to form large holes for inflow of seawater.

In addition, in order to gradually increase the amount of compressed air injected through the airbag in proportion to the gradually increasing depth of water in the course of sinking the ship from the sea surface to the sea floor, reduction of the volume and buoyancy of the airbag by hydraulic pressure Therefore, it is possible to provide a facility method optimized for the facilities of the spawning reptile by collecting the advantages of each of these advantages.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
2 is a perspective view of a partially cutaway appearance of a waste vessel used in the present invention.
3 is an external perspective view showing an example of an airbag used in the present invention.
4 is an enlarged plan sectional view of the main part of Fig.
5 is an exploded perspective view showing an example of a submerged flange used in the present invention.
6 is an exploded perspective view showing another embodiment of a submerged flange used in the present invention.
Fig. 7 and Fig. 8 are enlarged horizontal sectional views of the main portion showing a state in which the flooded flange is installed inside the hull;
FIG. 9 is a schematic view showing a maritime work step according to the present invention; FIG.
10 is a plan view of Fig.
11 is an enlarged view of the pneumatic distributor shown in Fig.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 and 2, a part or the whole of the inner space of the hull 2 of the waste ship 1 is formed as an empty space to remove the contamination source, A landing stage in which the ballast concrete 3 is placed and cured on the inner bottom of the landing vessel 10; And a maritime work step in which seawater is introduced into the inside of the ship 2 to sink the waste ship 1 to the sea floor.

More specifically, the overall appearance of the waste ship 1 is maintained as it is from the left and right sides, the deck 5 and the hull 2 including the bottom, to the upper structure including the wheelhouse. A part of the interior of the hull 2 including the main contamination source is removed to form an empty space or the entire interior of the hull 2 is formed into an empty space to remove the contaminants, The ballast concrete 3 is placed and cured on the inner bottom of the diaphragm 5 while the openings 4 for communicating seawater and entering and exiting the diver are formed at several places on the left and right sides and the deck 5 and the like.

The removal of contaminants from the inside of the hull 2 during the land-working stage as described above is not only a known operation that must be performed in advance for the facility of the spittle reed 10, It is to be noted that the details of the substantial part in this step are that the upper left side and the right side of the hull 2 and the part of the deck 5 The process of connecting each airbag 6 with the hull 2 is further performed while distributing the several to several tens of the airbags 6.

2, each of the airbags 6 is shown in an inflated state in order to facilitate understanding of the present invention. However, in the land-working stage, each of the airbags 6 is in a contracted state, And substantially inflating the respective airbags 6 is performed by towing the wrecked ship 1 to a water area where facilities for the wreck reed 10 are required, This is accomplished by injecting compressed air into an air compressor installed in the barge immediately before sinking to the sea floor.

In the present invention, it is preferable that the total buoyancy provided by each airbag 6 is 50 to 130% of the total load of the waste vessel 1 including the ballast concrete 3, When the total buoyancy provided by the pulley 6 is less than 50% of the total load of the pulmonary vessel 1, the settling load and the settling velocity of the pulmonary vessel 1 during the infusion operation of the pulmonary vessel 1, And the total buoyancy provided by each of the airbags 6 exceeds 130% of the total load of the waste ship 1, the number and volume of the airbags 6 are unnecessarily increased, And to prevent the rapid and smooth progress of the maritime work phase.

More specifically, for example, when the 1,000 tons (ton) of the waste ship 1 is to be installed by the sparse reptile 10, the total buoyancy provided by the respective airbags 6 is about 600 to 800 tons, The total buoyancy provided by the respective airbags 6 is reduced to a value equal to or greater than a predetermined value when the crane is supported by the load of about 200 to 400 tons, The weight of the seawater flowing into the inside of the hull 2 of the waste ship 1 is set to be the same as the weight of the seawater introduced into the hull 2 of the waste ship 1, Even if the total buoyancy provided by each of the airbags 6 exceeds 100% of the total load of the wasted vessel 10, the wastewater vessel 1 is prevented from being submerged You can.

3, the airbag 6 includes a socket for a pneumatic coupler for injecting compressed air to the outside of the expansion bag 9, which is expanded to a predetermined volume according to injection of compressed air, A mounting means for connecting the inflating bag 9 to the hull 2 and a valve mechanism for discharging the compressed air are respectively provided. The inflating bag 9 is connected to the socket mechanism, It is preferable that a reinforcing cloth 9a made of a soft and flexible material is put on the surface of the inflating bag 9 so as to prevent the inflating bag 9 from being damaged.

The socket mechanism is connected to the center of the upper surface of the expansion bag 9 as a pneumatic socket 11. The valve mechanism is connected to the expansion bag 9 (The left end in the drawing), and the mounting means is connected to the left and right sides of the inflating bag 9 as a chain 13 and a connecting ring 12, And each of the connecting rings 12 is connected to the inflating bag 9 on the basis of a reinforcing cloth 9a which is wound around the outer circumferential surface of the inflating bag 9, (Not shown) for connecting the airbag 6 to the hull 2 is provided at the other side end thereof.

3 is only a typical example of the airbag 6 that can be applied to the present invention. It is to be noted that various types of airbags 6, such as a spherical or conical shape, other than the cylindrical shape shown in the drawings, And the position at which the socket mechanism, the mounting means and the valve mechanism are connected to the inflating bag 9 can be arbitrarily adjusted in accordance with the appearance of the airbag 6, and the airbag 6 can be mounted on the hull 2, It is to be understood that other means of connection such as a rope or the like may be used in addition to the connecting ring 12 or the chain 13. [

2 and 4, at least two flange holes 8 are formed along the longitudinal direction of the hull 2 at the lower left and right sides of the upper portion of the ballast concrete 3, And the flooding flange (7) is connected to each of the flange holes (8) at a land level, wherein each of the flooded flanges (7) is in a watertight state The diver can easily open the wastewater vessel 1 in the marine working stage in which the wastewater vessel 1 is submerged into the sea bed so that seawater can be introduced into the hull 2.

As an example of the immersion flange 7, as shown in Figs. 4 and 5, a flange pipe 15, which is integrally connected to the hull 2 in a state of being inserted into the flange hole 8, And a flange cover 18 which is assembled to be watertight to the front end side flange portion of the flange pipe 15 protruding outside the hull 2, Is separated from the flange pipe (15) during the marine working stage in which the marine vessel (1) is submerged into the sea floor.

5, the flange cover 18 includes a disk-shaped watertight cover plate 16 covering the front-end side flange portion of the flange pipe 15, and a flange pipe 15, The flange portion and the cover plate 16 and the mounting ring 17 are provided with a fastening hole 15a for fastening the assembly bolt 7a to the flange portion, ) 16a and 17a are formed at regular intervals.

If the flange cover 18 for the immersion flange 7 is divided into the cover plate 16 and the mounting ring 17 as described above, the cover plate 16 itself is formed of a hard rubber plate or a thin plastic plate The weight of the flange cover 18 and the manufacturing cost can be greatly reduced while ensuring the watertightness function to the maximum by using only the portion of the mounting ring 17 made of a metal material. It is possible to provide advantageous advantages in terms of more easily separating the flange cover 18 from each immersion flange 7 at the time.

The flange cover 18 may be formed as a disk having a predetermined thickness without dividing the flange cover 18 into a cover plate 16 and a mounting ring 17, It is preferable that the flange cover 18 is made of a plastic material and the flange cover 18 separated from the flange pipe 15 for the infusion operation of the waste ship 1, It is more economical to collect the whole amount by the barge and reuse it for the operation of the other needle reed 10.

The flange pipe 15 is made of a metal material so that the rear side body portion excluding the flange portion is inserted along the flange hole 8 and then the distal end side outer peripheral edge portion of the flange pipe 15 is connected to the hull 2 The flange pipe 15 of the submergence flange 7 is inserted into the corresponding flange hole 8 in a fitting manner or a fastening manner instead of the welding method described above only when the pulmonary ship 1 is a small ship, As shown in FIG.

In any case, the leading end flange portion of the flange pipe 15 is prevented from protruding excessively to the outside of the ship 2, and the flange portion is brought into contact with the outer surface of the ship 2 as much as possible, It is desirable to minimize the hydraulic resistance by the portion of the flood flange 7 protruding to the outside of the hull 2 during the towing operation of the flange pipe 15 and the flange cover 18, To make the flange cover 18 easier to assemble or separate by making the eye bolt (the bolt head form the annular handle).

6, an open / close valve 19 is provided in place of the flange cover 18 in the flange portion at the front end inlet side of the flange pipe 15, and the open / The valve body 19 is provided with a butterfly valve 19a capable of easily performing the opening and closing operation of the valve while reducing the length of the flood flange 7 protruding to the outside of the hull 2 to the maximum, It is most preferable to provide a valve plate 19b in the form of a disk and a valve knob 19c connected to the valve plate 19b at the upper end of the valve body 19a.

An opening / closing valve 19 is mounted on the flange portion of the flange pipe 15 at the front end thereof by means of an assembly bolt 7a in a front side or a rear side of the valve body 19a, It is possible to integrally weld the opening / closing valve 19 to the front end inlet side of the flange pipe 15 without using the mounting flange 19d, if necessary In addition to the butterfly valve, various other known valve mechanisms such as a globe valve, a gate valve, or a ball valve may be used as the on-off valve 19. [

Since the open / close valve 19 is not separated and collected during the infusion operation of the closed vessel 1 but sinks together with the closed vessel 1, the economical efficiency of the open / close valve 19 is somewhat lower than that of the flange cover 18 However, in comparison with the method in which the flange cover 18 is provided, the infusion operation of the waste vessel 1 provides an advantage that it can be carried out easily and easily, and in some cases, the infusion operation of the waste vessel 1 The diver may be inserted after completion to separate and recover the respective on / off valves 19.

7 and 8, a flange cover 18 or an on-off valve (not shown) is attached to the flange portion in a state in which the front flange portion of the flange pipe 15 protrudes inward of the hull 2 In this case, the operation of separating the flange cover 18 or opening the on-off valve 19 and introducing the seawater into the inside of the ship 2 is performed by the hull of the ship 1 (2) Since it can be performed more safely than in the inside, it is possible to contribute to the prevention of the safety accident of the worker by minimizing the marine work.

After the ballast concrete 3 and the airbag 6 are installed as essential components as described above and the landfill operation of the waste vessel 1 in which the submergence flange 7 is further applied as necessary is carried out, The pulp vessel 1 is subjected to a pulmonary vessel conveying step for towing the pulp vessel 1 to the water body required by the facility of the pulp vessel 10. In this stage, the barge necessary for the infusion operation of the pulmonary vessel 1 is moved to the pulmonary vessel 1), and in the case of a self-propelled barge, it is possible to tow the waste ship 1 with the barge even if a separate tugboat is not operated, The barge may be moved prior to moving the barge.

After passing through the above-described pulmonary ship transferring step, sea water is introduced into the hull 2 of the pulmonary vessel 1, and the pulmonary vessel 1 is subjected to a marine working step in which the pulmonary vessel 1 is submerged. 1 and 9, the pneumatic unit 25 installed on the barge 20 is used to inject compressed air into each of the airbags 6, so that each of the airbags 6 (1) is submerged along with the respective airbags (6) by introducing seawater into the interior of the hull (2), and a step of submerging the wastewater And an airbag separation step of separating each of the airbags 6 from the seized lung vessel 1.

9 and 10, the barge 20 connects the wire rope 22 to the forward end of the wing vessel 1 and the center of the upper end of the stern side of the wreck vessel 1, A total of two cranes 21 are installed on the left and right sides of the cranes 21 so as to maintain the posture and balance of the rope 22 of the wire rope 22, A control house 24 for the management and control of the infusion operation is installed at a central portion of the control house 24 and a pneumatic unit 26 including an air compressor 27 and a pneumatic distributor 28 at the front side of the control house 24, (25) is provided as a representative example.

The barge 20 shown in FIG. 9 and FIG. 10 is only one representative example applicable to the present invention. It is possible to use any type of barge as long as it can perform an infusion operation of the waste vessel 1 It is possible to inject compressed air into each of the airbags 6 in addition to the air compressors 27 and the air pressure distributor 28 so as to expand each airbag 6 to a required level. It is clear that it is not possible to apply it.

However, it is more advantageous to utilize the pneumatic distributor 28 to simultaneously inject compressed air into several to dozens of airbags 6 using a single pneumatic source, The injection pipe 27a connected to the air compressor 27 by the pneumatic hose 26 is connected to one end (the tip side in the drawing) of the distribution tank 28a as a high pressure tank, A plurality of (a total of ten) distribution pipes 28b are connected to the left and right sides of the tank 28a, and a pneumatic valve (preferably a ball valve) is connected to the injection pipe 27a and the distribution pipe 28b (27b) and (28c) are installed.

A pneumatic hose 26 extending from the distribution pipe 28b of the pneumatic distributor 28 is connected to the left and right sides of the waste ship 1 and the airbag 6 connected over the deck 5, And a pneumatic plug (not shown) for assembling with the pneumatic socket 11 of the airbag 6 is connected to the end side of the pneumatic hose 26 extending from each of the distribution pipes 28b. And the pneumatic socket 11 and the pneumatic plug serve as known connecting parts for pneumatic piping widely used in the name of a pneumatic coupler.

In the case of the pneumatic coupler, as soon as the pneumatic plug of the pneumatic hose 26 is assembled with the pneumatic socket 11 of the airbag 6, the flow path of the compressed air from the pneumatic hose 26 through the airbag 6 is provided, Since the inlet of the airbag 6 and the discharge port of the pneumatic hose 26 are automatically set to the closed state immediately after the pneumatic socket 11 and the pneumatic plug are separated from each other, the connection between the pneumatic hose 26 and the airbag 6 Thereby providing an advantage that the separation operation can be performed very easily.

Of course, in addition to the above-described pneumatic coupler, the pneumatic hose 26 may be connected to the airbag 6 to inject compressed air into the airbag 6, and then the pneumatic hose 26 may be separated from the airbag 6 Considering the aspect that some of the compressed air injected into the airbag 6 does not escape to the outside in the process of separating the pneumatic hose 26 from the airbag 6, It is most preferable to use a pneumatic coupler or a pipe connecting part capable of performing a similar function.

Thus, the air injecting step connects the plurality of pneumatic hoses 26 extending from the pneumatic distributor 28 to the airbag 6 in a one-to-one relationship, and then activates the air compressors 27, ) Is performed by inflating each airbag (6) to a required level by injecting compressed air into the airbag (6), and then separating each pneumatic hose (26) from the airbag (6) The flange cover 18 is detached from the flange pipe 15 of each immersion flange 7 or the cover plate 16 made of the plastic plate or the hard rubber plate constituting the flange cover 18 is crushed or cut, The opening and closing valve 19 connected to the flange pipe 15 is opened to introduce the seawater into the hull 2 of the waste vessel 1. [

Instead of performing the step of submerging the pulmonary ship using the submerged flange 7 as described above, the left and right side lower portions of the hull 2 of the pulmonary ship 1 are cut to a predetermined size from the sea, It is possible to apply a conventional method of forming a safety net, but it is a very dangerous and demanding task requiring a skilled skill, and the risk of various safety accidents in performing the task is also very high , It is necessary to consider the step of submerging the wastewater to which the submergence flange 7 is applied as described above.

More preferably, the crane 21 installed on the barge 20 is used to balance the posture and balance of the waste vessel 1 with the crane 21 installed in the barge 20 from the sea level to the bottom of the sea The amount of the compressed air injected through the airbag 6 is increased stepwise in proportion to the gradually increasing depth of the water in the course of sinking the waste ship 1 from the sea surface to the sea floor, Thereby preventing volume reduction and deterioration of buoyancy.

In other words, if the atmospheric pressure on the sea surface is 1 bar, the water pressure at 10 m depth becomes 2 bar level according to Boyle's law and the water pressure at 20 m depth becomes 3 bar level, so the volume and buoyancy of airbag (6) (1/3) at the water depth of 20 m. In order to prevent such a phenomenon, the air pressure corresponding to the water pressure of the water depth layer 1 bar per 10 m water depth) to compensate for the volume and buoyancy of the airbag 6 in a stable manner.

The speed at which the wire rope 22 is released from the rope drum 23 via the crane 21 must be kept constant in accordance with the settling speed of the waste ship 1 and the speed at which the wire rope 22 The extended pneumatic hose 26 should also have a length sufficient to maintain a stable connection with the airbag 6 until the time when the waste ship 1 is seated on the seabed surface, Pressure valves 27b and 28c are provided in the injection pipe 27a and the distributor pipe 28b of the airbag 6 so that the high-pressure compressed air stored in the respective airbags 6 is not flowed back to the pneumatic distributor 28 side through the pneumatic hose 26, It is preferable to provide the check valves 27c and 28d at the entrance or exit side positions of the check valves 27c and 28d.

After the pulmonary ship 1 is securely placed on the seabed surface in a correct posture by performing the pulmonary ship flooding step in the above manner, the divers are put into the bottom surface where the pulmonary vessel 1 is seated, Is separated from the hull 2 of the waste ship 1 so that the facility of the bedding reed 10 is finally completed and the airbag 1 separated from the hull 2 of the waste ship 1 6) floats to sea level due to buoyancy of its own, it can be recovered to the barge 20 and reused for the subsequent operation of the needle bed facility.

Further, even when the operation of injecting the compressed air through the airbag 6 is continuously performed until the time when the waste ship 1 is seated on the seabed surface, in the airbag separating step, each of the pneumatic hoses 26 is connected to the airbag The airbag 6 separated from the hull 2 is separated from the barge 20 using the pneumatic hose 26 after the airbag 6 separated from the hull 2 is floated together with the pneumatic hose 26, The separation operation between the pneumatic hose 26 and the airbag 6 in a state in which the airbag 6 is recovered is minimized while the recovery operation of the airbag 6 is performed with ease.

More preferably, a portion (40-70) of the compressed air filled in the airbag 6 using the exhaust valve 14 of the airbag 6 before each airbag 6 is separated from the hull 2 the airbag 6 is prevented from being damaged or ruptured due to the volume expansion occurring during the rising of the airbag 6 to the sea surface, Even if a part of the filled compressed air is discharged, the remaining buoyancy provided by the remaining compressed air floats to the sea surface, so that the separation and recovery operation of the airbag 6 is not hindered.

According to the present invention having the above-described configuration, the sedimentation load and sedimentation velocity generated during the sinking of the wastewater vessel 1 to the seabed surface are lowered to an appropriate level by using the buoyancy of the airbag 6, 10 can be performed more safely and accurately than in the conventional case and the crane 21 mounted on the barge line 20 can be downsized for the facility of the needlework reptile 10, Can greatly contribute to.

Particularly, after the waste ship 1 is towed to a water body requiring facilities of the needle boat reed 10, the flange cover 18 is separated from each of the flooded flanges 7, Since the seawater can be introduced into the inside of the hull 2 with a relatively simple operation of opening the hull 19, the left and right side lower portions are cut off at the sea to form large holes for introducing seawater. So that the invasion work of the waste vessel 1 can be carried out more quickly and safely.

In addition, through the method of gradually increasing the injection amount of the compressed air through the airbag 6 in proportion to the gradually increasing depth of the water in the process of sinking the waste ship 1 from the sea surface to the sea floor, 6) and the buoyancy is prevented from being lowered, it is possible to more safely and accurately carry out the facility work of the needle reed 10, and to collect the advantages of each of them, and to optimize the facilities of the needle reed 10 It is possible to provide a facility method.

1: Waste ship 2: Hull 3: Ballast concrete
4: opening 5: deck 6: airbag
7: Immersion flange 7a: Assembly bolt 8: Flange hole
9: Expansion bag 9a: Reinforcing cloth 10: Spinning reed
11: Pneumatic socket 12: Connection ring 13: Chain
14: exhaust valve 15: flange pipe 15a, 16a, 17a:
16: cover plate 17: mounting ring 18: flange cover
19: opening / closing valve 19a: valve body 19b: valve plate
19c: valve knob 19d: mounting flange 20: barge
21: crane 22: wire rope 23: rope drum
24: control house 25: pneumatic unit 26: pneumatic hose
27: air compressor 27a: injection pipe 27b, 28c: pneumatic valve
27c, 28d: Check valve 28: Pneumatic distributor 28a: Distribution tank
28b: distribution pipe

Claims (6)

delete A ground operation step in which a part or all of the inner space of the pulsating ship is formed as an empty space to remove the contamination source and the ballast concrete is laid on the inner bottom of the hull to cure the pulverized ship, And a port of a predetermined size is formed in the left and right side portions of the waste ship corresponding to the upper portion of the ballast concrete so that seawater flows into the inside of the ship, A method of installing a spatulate reptile through a step of sinking a seawater,
In the land preparation step, at least two flange holes are formed in the left and right side lower portions of the upper portion of the ballast concrete along the longitudinal direction of the hull, and the flooding flanges are connected to each of the flange holes , An operation of distributing several to dozens of airbags distributed over the left and right upper side portions and the deck portions constituting the hull and connecting each of the airbags with the hull is further performed, Buoyancy is 50 ~ 130% of the total load of the ship containing ballast concrete,
The marine operation step includes an air injection step of inflating each airbag by a predetermined volume by injecting compressed air into each airbag using an air compressor and a pneumatic distributor installed in the barge, And the airbag separation step of separating the respective airbags from the wreck mounted on the seabed surface are sequentially performed,
The flooded flange includes a flange pipe integrally connected to the hull in a state of being inserted into the flange hole and a flange cover that is assembled and installed so as to be watertightly seated on the flange portion of the flange pipe protruding outside or inside the hull Wherein the flooded ship is flooded by separating the flange cover from the flange pipe of the flooded flange or by breaking or cutting the flange cover so that seawater flows into the inside of the ship. Anchovy facility method. The flange cover according to claim 2, wherein the flange cover of the immersion flange includes a waterproof cover plate covering the flange portion on the front end side of the flange pipe, and a mounting ring for engaging and assembling the cover plate with the flange portion on the front end side of the flange pipe Wherein the airbag is used as an airbag. The waterproof flange according to claim 2, wherein the water immersion flange has a flange pipe integrally connected to the hull in a state of being inserted into the flange hole, and a flange pipe Wherein the inflow of water into the inside of the ship is performed by opening the on-off valve of the inflow flange, so that the inflow of seawater into the inside of the ship is performed. The airbag according to any one of claims 2 to 4, wherein the airbag comprises a socket mechanism for a pneumatic coupler for injecting compressed air outside the expansion bag which is inflated to a predetermined volume according to injection of compressed air, And a valve mechanism for discharging the compressed air, respectively, are used for the spatula irrigation system. The method as claimed in any one of claims 2 to 4, wherein, in the step of submerging the waste vessel, the posture of the waste vessel is balanced with the posture of the waste vessel using a crane installed on the barge from the sea level to the bottom of the sea floor, In order to reduce the volume of air bag caused by water pressure and to prevent the deterioration of buoyancy by increasing the amount of compressed air injected through the air bag in proportion to the gradually deepening water layer in the process of sinking the waste ship from the sea surface to the sea floor, Characterized in that an airbag is used for a spawning reptile facility.

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