JPH10252047A - Diffusion preventing method for effluent oil turbidity and diffusion preventing device used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and surely prevent the diffusion of oil turbidity by sinking a lower opened film body into water in the folded state, deploying the film body when it is sunk to the nearby position of an object to be covered, then covering the object. SOLUTION: Multiple anchors 6 are installed on the water bottom G around an object A to be covered, and a film body 1 is put into water while being held by suspension wires 3. When the other end sections of towing wires 9 are towed, the film body 1 is sunk into the water in the folded erect state. If upward tensile force is applied to release wires 5 to release a stop ring 4 from the film body 1 when the film body 1 is sunk to the nearby position above the object A, the film body 1 is deployed. The wires 9 are continuously towed, and the towing work of the wires 9 is stopped when the lower end section of the film body 1 reaches the nearby position of the anchors 6. When the object A is covered with the film body 2 kept at the square pyramidal shape by a buoyancy body 2, the effluent oil turbidity is floated up to the apex side of the film body 1, and its diffusion to the outside is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing oil spill diffusion, which can satisfactorily prevent the diffusion of oil spills flowing out of, for example, a tanker sunk on the seabed, and an apparatus used for the method.

[0002]

2. Description of the Related Art In recent years, large tankers have sunk to the sea floor due to collisions and the like, and marine pollution due to diffusion of oil spills from such tankers has become a social problem.

Conventionally, as a means for preventing the diffusion of oil spills, for example, a hull of a tanker is pulled up to the sea by a crane or the like, or the hull is floated to the sea surface by using buoyancy to directly move from the hull. Means for extracting oil, means for sealing the hull with concrete or the like have been proposed.

[0004]

However, all of the above-mentioned conventional means have a lot of uncertainties and have a problem of lack of specificity, and are not necessarily definitive countermeasures. .

[0005] Therefore, the present invention has been made to solve the above-mentioned conventional problems, and the use of a membrane makes it possible to easily and reliably prevent the diffusion of oil spills. The subject is to provide the service to other flights.

[0006]

Means for Solving the Problems In order to solve the above-mentioned problems, a means adopted by the present invention is a method for preventing the diffusion of oil spills flowing out of a coating object A submerged in water, comprising Is settled in water in a folded state, and when it settles to a position near the coating object A, the film body 1 is extended to cover the coating object A, thereby diffusing oil spills. The point is to prevent.

[0007] The invention also relates to an oil spill diffusion prevention device according to the present invention, which is a device for preventing the diffusion of oil spills flowing out of a coating object A submerged in water, and which is a foldable lower opening film. The body 1, a plurality of cords 9 having one end connected to the lower end side of the membrane 1, and the other end of the cord 9 inserted to be retractable around the object A to be coated. And the anchor 6 to be installed.

When using such an oil spill diffusion prevention device, first, an anchor 6 is installed on a water floor or the like around the object A to be coated. Thereafter, the other end of the string-like body 9 is pulled to sink the water in a state where the membrane 1 connected to the one end is folded.

Then, when the film 1 is settled to a position near the object A to be coated, the folded state of the film 1 is released and the object 1 is covered with the film 1 Diffusion of oil spills flowing out of the coating target A can be prevented.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the oil spill diffusion prevention device according to the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 designates a quadrangular pyramid-shaped film having a lower opening, which is made of a material such as a fluororesin or a urethane resin through which oil turbidity cannot pass, and which has a polymerized state on the lower side. In order to maintain a quadrangular pyramid shape in water, a buoyant body 2 such as a float is attached to the top of the membrane body 1, and one end of a suspension wire 3 is attached to the buoyant body 2. The part is fixed.

Reference numeral 4 denotes a retaining ring externally fitted to the film body 1 so as to maintain the folded state of the film body 1. One end of a plurality of detaching wires 5 is fixed to the retaining ring 4. .

Reference numeral 6 denotes a plurality of relatively heavy anchors made of concrete blocks or the like.
A letter-shaped insertion hole 7 is formed, and a pulley 8 is provided in the insertion hole 7. In addition, one opening 7a of the insertion hole 7
Is set to be smaller in diameter than the other opening 7b.

Reference numeral 9 denotes a tow wire as a cord having one end connected to the lower end of the membrane 1, and each anchor 5
And is engaged with the pulley 8.

Reference numeral 10 denotes a fixing tool attached to a desired position of the towing wire 9 at a predetermined interval, and a plurality of scalable burrs 10a are protrudingly provided on the outer peripheral surface of the fixing tool 10, and the fixing tool 10 is temporarily fixed. When passing through one opening 7a of the anchor 6, the burr 10a expands in diameter and engages with the periphery of the opening 7a, so that the towing wire 9 is not inadvertently pulled toward one end. .

The present embodiment comprises the above-mentioned specific items, and is used to prevent the diffusion of oil spills flowing out of a tanker A as an object to be sunk, for example, submerged on a water bottom (sea bottom) G. Will be described.

First, the anchor 6 is settled in the water while being held by the towing wire 9 from a work boat (not shown), and each anchor 6 is placed on the water bottom G around the object A as shown in FIG. Install.

Thereafter, while holding the film body 1 with the suspending wire 3, the film body 1 is put into water, and each towing wire 9
When the other end is pulled by, for example, a hoisting device or a ship, the membrane body 1 gradually sinks in water in a folded upright state.

When the membrane 1 is settled in such a form, it is less affected by the tidal current, so that it can greatly be used for a series of operations.

When the film body 1 has settled to a position above the object A to be coated, the retaining ring 4 is separated from the film body 1 by applying an upward tensile force to the detachment wire 4. The vicinity of the water bottom G is in a calm state without a tidal current.
The folded state of the film body 1 is properly released, and the film body 1 can be gradually expanded as shown in FIG.

Further, when the towing wire 9 is continuously pulled and the lower end of the membrane 1 reaches a position near the anchor 6, the towing operation of the towing wire 9 is stopped.

When the tanker A is covered with the film body 1 maintained in the shape of a quadrangular pyramid by the buoyant body 2, the oil spill which flows out floats to the top side of the film body 1 and diffuses to the outside. Since it is possible to prevent the occurrence of the oil spill, it is possible to perform a series of operations without adding the tanker A to the tanker A.

Further, a fixture 10 provided on the towing wire 9
Thereby, the towing wire 9 is not pulled to one end side and does not impair its expanded state, and therefore, the covering state of the tanker A with the film body 1 can be favorably maintained.

Then, as shown in FIG. 4, if the float 11 is attached to the other end of the suspension wire 3 and one end of each of the towing wires 9, the work for preventing diffusion is completed. While being able to easily recognize the sinking position,
It will be used for later work such as oil spill recovery work.

In the above-described embodiment, a plurality of anchors 6 are used, but the specific number is not limited to this. May be used.

Further, the shape of the film body 1 is not limited to the quadrangular pyramid shape as in the above embodiment, and may be, for example, a triangular pyramid shape, or a planar film body 1 provided with a buoyant body 2.
It is also possible to use

Further, the buoyant body 2 does not necessarily need to be provided on the film body 1, and may be provided as needed.

Further, in the above embodiment, the pulley 8 is provided in the insertion hole 7 of the anchor 6, but a roll bearing 12 may be used instead of the pulley 8. In this case, the arrangement of the roll bearings 12 may be determined in consideration of the shape of the anchor 6 and the like. For example, FIG.
A plurality of roll bearings 12 are installed facing the upper and lower inner wall surfaces of the insertion hole 7 of the anchor 6 as shown in FIG.
A plurality of roll bearings 12 are arranged so as to have a substantially hexagonal front surface as described above, and are housed in the insertion holes 7. This allows
The work of pulling the tow wire 9 is further improved, which can greatly contribute to the convenience of the work.

Further, the object A to be coated is not necessarily limited to the tanker as in the above embodiment.

Further, it is conceivable that the object A to be covered may be immersed in the state held by the obstacle without reaching the water bottom G due to the obstacle in the water. In this case, the present invention is applicable. Needless to say,

In addition, means for sedimentation of the film body 1, means for maintaining the folded state, and means for releasing the film body 1 for releasing the same can be arbitrarily changed within the range intended by the present invention.

[0032]

As described above, according to the present invention, the object to be coated is formed by a very simple operation of sedimentation of the film in the folded state and expansion of the film at a position near the object to be coated. A special effect has been obtained in that the diffusion of oil spills flowing out of a product can be reliably prevented.

Further, since the film body is used as the coating means, a series of operations can be performed without adding a coating object such as a tanker. It does not cause the inconvenience of increasing.

Further, the diffusion prevention device according to the present invention has a practical effect that it can be manufactured inexpensively and easily because the entire specified items are extremely simple.

[Brief description of the drawings]

FIG. 1 is a front view showing one use state of the present invention.

FIG. 2 is a cross-sectional view showing one embodiment of an anchor portion.

FIG. 3 is a front view showing one use state of the present invention.

FIG. 4 is a front view of the same.

5A and 5B show another embodiment, wherein FIG. 5A is a partial cross-sectional front view of an anchor, FIG. 5B is a schematic side view including a partial cross-section, and FIG. 5C is a schematic front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Membrane body 2 ... Buoyant body 4 ... Retaining ring 6 ... Anchor 9 ... String-shaped body A ... Object to be coated

Claims (7)

[Claims] A method for preventing the diffusion of oil spills flowing out of an object to be coated (A) submerged in water, comprising:
Is settled in water in a folded state, and when it has settled to a position near the coating target (A), the membrane (1) is extended to cover the coating target (A) to prevent oil spillage. A method for preventing the spread of oil spills, characterized by preventing the spread of oil spills. 2. A method for preventing the diffusion of oil spills flowing out of a coating object (A) immersed in water, comprising: installing an anchor (6) around the coating object (A); One end is connected to the membrane (1) and the other end of the string (9) inserted through the anchor (6) is pulled to set the membrane (1) in the folded state and settle in water. When the sedimentation reaches a position near the object to be coated (A), the film body (1) is spread to cover the object to be coated (A) and to prevent diffusion of oil spill. Spill oil spill diffusion prevention method. 3. A device for preventing diffusion of oil spills flowing out of a coating object (A) submerged in water, comprising a foldable lower opening-like film (1), and a lower end of the film (1). A plurality of cords (9) having one end connected to the side, and an anchor which is inserted around the other end of the cord (9) so as to be able to be pulled and installed around the object to be coated (A) (6) An oil spill diffusion prevention device characterized by the following. 4. A maintenance means for maintaining the folded state of the membrane (1), and releasing the folded state to release the membrane (1).
4. The spilled oil spill diffusion prevention device according to claim 3, further comprising release means for expanding the oil spill. 5. A membrane body in which said holding means is in a folded state.
A retaining ring (4) removably fitted to (1).
The spilled oil spill diffusion prevention device described in the above. 6. The spilled oil spill diffusion prevention device according to claim 3, wherein the film body (1) is formed in a cone shape. 7. The spilled oil spill diffusion prevention device according to claim 6, wherein a buoyant body (2) is provided on a top portion of the film body (1).