KR20040046301A - Dropping apparatus for barge and chain-net structure and dropping method thereof - Google Patents

Abstract

PURPOSE: Sand and stones are dropped on a position embedded with a deep sea piping using a chain net, thereby improving accuracy. CONSTITUTION: In a method for dropping sand and stone on a protective net installed on upper part of a deep sea piping, a stone transferring ship(100) and a barge ship(120) are moved to the working position by a tugboat(600). The stone transferring ship and the barge ship are fixed by a movement preventing plate(140). A stone injecting hopper(200), a circular drum(300) and a cylindrical chain net(400) are inserted through the movement preventing plate. After attaching injecting port of the stone injecting hopper, stone is dropped.

Description

DROPPING APPARATUS FOR BARGE AND CHAIN-NET STRUCTURE AND DROPPING METHOD THEREOF}

The present invention relates to a deep-sea bottom pipe protection device and a dropping method using a barge and a cylindrical chain loop network.

In general, the sandstone dropping method for protecting the deep sea bottom pipe is a method of dropping the sandstone loaded on the deck of the barge by the barge at the location where the submarine cable and the communication pipe are buried by using heavy equipment such as a fork lane. .

The depth at which the deep-sea basin is embedded, most often past the lower tens of meters, selects a precise location point and drops the sandstone when the algae are less affected.

1 is a view schematically showing a conventional sandstone discharge method, when the deep sea bottom pipe 10 is embedded in the sea bottom (B), the protection mat 20 is installed on the upper portion is installed deep sea bottom pipe (10) .

At this time, the tugboat 30 is connected to the dead stone carrier ship 40 loading the dead stone 60 is located close to the point of underwater dropping to drop the dead stone 60 by using a fork lane (or excavator) 50. do.

However, in the above-described sandstone dropping method for protecting the deep bottom pipe, it is difficult to accurately position the sandstone drop because it is difficult to accurately position the sandstone loaded on the barge deck using heavy equipment such as a fork lane. In places where the algae is severe, there is a problem in that a huge budget is input due to the phenomenon of excessive input of the sandstone such as the sandstone is swept away in the other direction by the algae.

The present invention is a novel dropping method devised in order to solve the above problems, the present invention, by forming a chain ring in the cylindrical steel drum and by connecting a plurality of chains to the chain ring structure to manufacture a cylindrical chain ring network, As it adjusts the length according to the depth of the water, it is possible to drop the sandstone at the correct point, thereby preventing the waste of the used sandstone as much as possible, and it is possible to drop the pressed sand at the exact position where the submarine cable and communication pipe are buried. The purpose of the present invention is to provide a deep-sea bottom pipe protection device and a method of dropping the deep sea bottom pipe using barges and cylindrical chain loops, which can complete the work under the influence of the ship, and thereby prevent the budget waste. It is done.

1 is a view schematically showing a conventional dead stone discharge method.

Figure 2 is a view schematically showing a method for dropping the deep-sea bottom pipe protection of the present invention.

Figure 3 is an exploded state diagram of the member used in the deep-sea bottom pipe protection stone dropping method of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: sandstone carrier 110: sandstone

120: work barge 130: forkrain

140: flow prevention plate 150: deep sea bottom pipe

160: protection mat 200: sand injection hopper

210: elliptical injection portion 220,320,420: flange portion

230,330,430: Bolted hole 300: Round drum

310: cylindrical tube 400,400 ': cylindrical chain

410: chain ring drum 412: cylindrical portion

414: chain ring 430: chain

500: fastening bolt B: underwater bottom

600: tug

The present invention is to drop the sandstone in the following way to achieve the above object, in the present invention, in order to prevent the separation of the deep sea bottom pipe buried in the ground of the underwater bottom, such as submarine cables, communication pipes, A method for dropping sandstone on an installed protective mat, the method comprising: using a tugboat to move a sandstone carrier and a work barge to a work position in which a deep sea bottom pipe is embedded; Fixing the sandstone carrier and the work barge arriving at the work position with a flow preventing plate, and inserting the sandstone injection hopper, the circular drum, and the cylindrical chain link network between the flow preventing plate; After the lower part of the oval injection portion of the sandstone injection hopper is in close contact with the flow preventing plate, dropping the sandstone loaded on the deck of the sandstone carrier into the water by using a fork crane; And checking whether or not the sandstones are accurately stacked on the upper portion of the protection mat installed on the upper side of the deep sea bottom pipe by using a diver; a barge and a dropping method for protecting the deep sea bottom pipe using a cylindrical chain loop, characterized in that the sandstone is dropped. to provide.

In addition, due to the fact that the sand is dropped by sea work, the sand stone carrier and the work barge are interconnected by a flow preventing plate to eliminate the influence of the wave, and the sand injection hopper and the circular drum are installed between the connection and the sand injection hopper. The sandstone loaded on the deck of the sandstone carrier is dropped into the water by using the forklane, and the sandblasting of the sandstone generated when the sandstone is introduced by the forklane is prevented as much as possible because the circumferential injection hopper is coupled to the circular drum. In the circular drum, two chain loop drums and a chain chain network consisting of one set of chains (ONE SET) are combined in the lower part, while a cylindrical chain chain network having different lengths according to the depth of water is used. The sandstones that are dropped through the sandstone injection hopper and the circular drum are embedded in the ground of the underwater floor through the cylindrical chain hook network. It is accurately dropped on the upper part of the deep sea bottom pipe, and the chain ring drum formed on the upper and lower parts of the bottom of the sandstone injection hopper, the upper and lower parts of the circular drum, and the cylindrical chain ring network has a structure in which the flange is formed and fastened with the fastening bolt and the nut. It provides a deep-sea bottom pipe protective device using a barge and a cylindrical chain loop, characterized in that the dropping device.

Hereinafter, with reference to the accompanying drawings will be described a method for dropping stones using the barge and the cylindrical chain loop network of the present invention.

FIG. 2 is a view schematically showing a deep-sea bottom pipe protection method of the dead stone drop of the present invention, the sand stone carrier ship 100 and the work barge 120 is a flow preventing plate in order to exclude the influence of waves due to the dead stone is dropped by the sea operation Is connected to (140), between the connection between the sand injection hopper 200 and the circular drum 300 is to be installed.

The sandstone injection hopper 200 is loaded with the sandstone 110 loaded on the deck of the sandstone carrier 100 in the water by using a fork crane 130, the circular drum 300, the top of the sandstone injection hopper 200 is Shattering of the sandstone 110 generated when the sandstone 110 is introduced by the fork-lane 130 in the coupled relationship is prevented as much as possible.

The circular drum 300 has a chain chain network 400 having a structure in which two chain ring drums 410 and a chain 430 fastened to the chain ring drum 410 in a circle form a set (ONE SET). ) Is coupled to a plurality, the connection between the cylindrical chain cyclic net 400 according to the depth of the dead stone 110 is dropped through the sand seok injection hopper 200 and the circular drum 300 is a cylindrical chain cyclic net ( 400 is accurately dropped on the upper portion of the deep sea bottom pipe 150 buried in the ground of the underwater bottom (B).

The lower part of the dead stone injection hopper 200, the upper and lower parts of the circular drum 300 and the upper and lower parts of the cylindrical chain loop network 400 are all easy to work because the flange is formed, When the correct position is selected, the sandstone 110 is dropped into the water without error, and is sequentially stacked on the upper portion of the protection mat 160 installed above the deep sea bottom pipe 150.

3 is an exploded state diagram of a member used in the deep-sea bottom pipe protection sand-splitting method of the present invention, the sand-seat injection hopper 200, the elliptical injection portion 210 is formed on the upper portion, the circular flange portion 220 at the bottom It is a formed structure, the diameter of which is reduced from the top to the bottom.

The circular drum 300 has a structure in which flange portions 320 are formed on both sides of the central cylindrical tube 310, respectively, and the central cylindrical tube 310 is formed to have the same diameter.

The sandstone injection hopper 200 and the circular drum 300 are connected to each other by a structure in which the fastening bolt 500 and the nut 550 are fastened in a state in which the flanges 220 and 320 are in close contact with each other. Although a gasket may be provided between the 200 and the circular drum 300, the used stone may be omitted due to the large nominal diameter.

Cylindrical chain loop network 400 has a chain ring drum 410 having the same diameter in the upper and lower, respectively, the chain 430 is coupled between the two chain ring drum 410, the chain, The ring drum 410 has a T-shaped flange portion 420 is formed at the upper portion, a cylindrical portion 412 perpendicular to the lower portion of the flange portion 420 is formed, while the chain ring in the cylindrical portion 412 414 is formed so that the chain 430 is formed in a cylindrical structure.

At this time, the cylindrical chain loop network 400 is preferably formed in the chain 430 in the chain ring drum 410 densely not to be separated from the dead stone drop out.

Cylindrical chain loop network 400 ′ installed at the lowermost portion, bolt fastening holes 430 are formed in the upper chain ring drum 410, but bolt fastening holes are not formed in the lower chain ring drum 410. .

As can be seen in the above-described configuration, the sandstone 110 dropped through the sandstone injection hopper 200 and the circular drum 300 is buried in the ground of the underwater bottom (B) through the cylindrical chain loop 400 Due to the drop on the upper portion of the deep sea bottom pipe 150 can move while dropping a certain amount of sandstone 110 in the correct position it is possible to facilitate the progress of the rapid work.

Flange portions 220, 320 and 420 on the chain ring drum 410 formed on the lower part of the dead stone injection hopper 200, the upper and lower parts of the circular drum 300, and the upper and lower parts of the cylindrical chain ring network 400. Is formed, the connection of a plurality of cylindrical chain loop network 400 according to the depth of the water is easy, in particular, when the correct position is selected, the sandstone 110 is dropped into the water without errors, the depth of the deep sea bottom pipe 150 The protective mat 160 provided on the upper side is sequentially stacked.

As for the cylindrical chain loop network 400, the long and the short chain are used simultaneously.

Referring to the step of dropping the dead stone according to the above configuration is as follows.

The first step is to move the sandstone carrier ship 100 and the work barge 120 to the working position by using the tug boat 600.

That is, the tugboat 600 is connected to the sandstone carrier ship 100 and the work barge 120 is moved to a position where the deep sea bottom pipe 150 is embedded.

In the second step, the sandstone carrier ship 100 and the work barge 120 are fixed to the flow preventing plate 140, and the sand injection hopper 200 and the circular drum 300 are disposed between the flow preventing plate 140. This step is to install.

That is, the flow preventing plate 140 is coupled to the sandstone carrier ship 100 and the work barge 120 so that an accident does not occur during the pushed stone dropping operation under the influence of the waves. 100 and the work barge 120 is bolted to the structure, through the through-hole formed in the center of the flow preventing plate 140 to be in close contact with the lower portion of the elliptical injection portion 210 of the sandstone injection hopper 200 It is seated.

At this time, the sand stone injection hopper 200, the circular drum 300 and the cylindrical chain loop network 400 is fixed in advance, the cylindrical chain loop network 400, the circular drum 300 and the dead stone inside the flow preventing plate 140 Injection hopper 200 is inserted sequentially.

The third step is dropping the sandstone 110 loaded on the deck of the sandstone carrier 100 into the water using the fork crane 130.

That is, when a large amount of sandstone 110 is introduced through the sandstone injection hopper 200 using the fork lane 130, it is buried in the ground of the underwater bottom B in the state of preventing the scattering of the sandstone 110 as much as possible. Dropped on the upper portion of the deep sea bottom pipe 150 is accurate.

The fourth step is a step of checking whether the sandstone 110 is correctly stacked on the upper portion of the protection mat 160 installed on the upper side of the deep sea bottom pipe 150 using the diver.

That is, the submarine is sent to the seabed for final finishing work, and the diver who boards the submarine readjusts the wrong position.

The deep-sea bottom pipe protecting method and device using the barge and the cylindrical chain loop network according to the present invention described above can be prevented as much as possible waste of the dead stone because the sand can be accurately dropped to the buried position of the submarine cable, communication pipe. There is an effective effect, and as a result, a waste of budget can be prevented as much as possible.

In addition, a chain ring is formed on the cylindrical steel drum, and a chain chain is made by connecting a plurality of chains to the chain ring. The length can be adjusted according to the depth and the sandstone is dropped through the inside of the chain, thereby improving the accuracy and efficiency of the work.

Claims (3)

In the method of dropping sandstones on the protection mat installed in the upper part of the deep sea bottom pipe in order to prevent detachment of the deep sea bottom pipe buried in the ground of the underwater bottom such as a submarine cable and a communication pipe, Using the tugboat 600 to move the sandstone carrier ship 100 and the work barge 120 to a work position in which the deep sea bottom pipe 150 is embedded; The sandstone carrier ship 100 and the work barge 120 which have arrived at the work position are fixed by the flow preventing plate 140, and the sandstone injection hopper 200, the circular drum 300 and the cylindrical chain between the flow preventing plate 140. Inserting the ring network 400 in a connected state; After the lower portion of the elliptical injection portion 210 of the sandstone injection hopper 200 is in close contact with the flow preventing plate 140, the sandstone 110 loaded on the deck of the sandstone carrier 100 using the fork crane 130. Dropping in water; And Checking whether or not the sandstone 110 is accurately stacked on the upper portion of the protective mat 160 installed on the upper side of the deep sea bottom pipe 150 using the diver; barges and cylindrical chain loops characterized in that the stone is dropped Sasang dropping method for protecting deep sea bottom pipe. The sandstone carrier ship 100 and the work barge 120 are interconnected by the flow preventing plate 140 in order to exclude the influence of the waves due to the sandstone is dropped into the sea operation, between the sandstone injection hopper 200 Circular drum 300 is installed, The sandstone injection hopper 200 is loaded with the sandstone 110 loaded on the deck of the sandstone carrier 100 in the water by using a fork crane 130, the circular drum 300, the top of the sandstone injection hopper 200 is Due to the combination is combined with the structure that the scattering of the sandstone 110 generated when the sandstone 110 is introduced by the fork crane 130 is prevented as much as possible, The circular drum 300 has a plurality of chain chain drum 410 and a chain of chain chain 400 is formed in one chain (ONE SET) in the lower portion is coupled, while the length depending on the depth of the water Is connected to a different cylindrical chain loop 400, the sandstone 110 is dropped through the sandstone injection hopper 200 and the circular drum 300 in the ground of the underwater bottom (B) through the cylindrical chain loop (400) Accurately dropped on top of the buried deep sea pipe 150, The lower portion of the dead stone injection hopper 200, the upper and lower portions of the circular drum 300 and the upper and lower portions of the cylindrical chain loop network 400, the flange portion is formed is fastened with a fastening bolt and nut Deep-sea bottom pipe protection device using a barge and a cylindrical chain loop, characterized in that the structure. The method of claim 2, The cylindrical chain loop network 400, the long and short chain of the chain is used at the same time the vertical length is adjustable, while the plurality of cylindrical chain loop network 400 is a bolt fastening hole formed in the flange portion (420) 430 through the fastening bolt 500 and the nut 550 is fastened to adjust the vertical length, The flange portion 420 of the cylindrical chain loop network 400 'is installed at the bottom and installed in the adjacent position to drop the sandstone 110 to the upper portion of the protective mat 160, characterized in that the structure does not have a bolt fastening hole Deep dropping device for deep sea bottom protection using barges and cylindrical chain links.