JPS60226390A - Discrimination for obstacles for water-borne traffic - Google Patents

Abstract

PURPOSE:To obtain a means which a vessel can discriminate, by installing beacon lights onto the floating bodies for floating a dredging pipe or the floating bodies for an oil fence. CONSTITUTION:On the both sides of a pipe 4 extending from a dredger 1 to a reclaimed region 3, the floating bodies 5 and 6 for floating the pipe 4 on the sea are installed. Beacon lights 7 are installed at an intervals of 5-50m onto the floating bodies 5 and 6. Similarly, the beacon lights can be installed also onto the floating bodies for suspending oil fences. A vessel can discriminates these beacon lights, and the breakage troubles of pipes and floating bodies in the case when a ship passes on the pipe or the floating bodies as in the conventional light buoy can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for displaying water traffic obstacles, such as a continuous linear display of a dredging sand pipe, an oil fence, a sewage diffusion prevention frame, etc. when a ship navigates on water at night. It relates to a method of separating objects so that they do not collide with obstacles such as obstacles or sea walls.

BACKGROUND ART When carrying out various types of construction work in ports, lakes, rivers, etc., the construction area is displayed to draw attention to the work. It is especially important to clearly display the presence of obstacles to ships passing through these dots at night to avoid danger.

For example, when carrying out dredging work, mud is dredged by a pump ship anchored at sea and transported from offshore to a reclaimed area on the coast using pipes. Because the pipes are supported by floating bodies and suspended on the water surface, and the length of the pipes is several kilometers, there is a risk of collision if ships sailing on the sea cannot identify them. This danger is especially high at night, when they are difficult to identify.

Therefore, candle buoys are used to alert ships navigating at night to the presence of obstacles. This candle buoy consists of a bar attached to a floating body tied to the ocean floor, and a beacon light attached to this bar.

However, these candlelight buoys can only be placed at intervals of, for example, 100 m to 500 m along the pipe in order to indicate the existence of a pipe spanning several kilometers as described above. Although the light from a buoy may appear to be along a single line, if a ship approaches a candlelight buoy, it may only be seen as a dot-shaped marker, and it may be seen as a dot-shaped marker that is connected to an adjacent candlelight buoy. We may not be able to see the relationship and read this as one of the beacons indicating the existence of a continuum pipe. To avoid this inconvenience, it would be possible to narrow the distance between the candlelight buoys, but even this would be costly, and the candlelight buoys are floating bodies that move with the waves and are tied to the seabed with wires, for example. Since the pipe moves within a range determined by the length of the wire, and its position is not constant, it is difficult to accurately determine the pipe's position, and it is easy to make mistakes in visual estimation of its position.

In such a case, if the ship continues to proceed, it will collide with the pipe, which is not only dangerous for the ship, but may also damage the pipe, so improvements are desired.

In addition, oil fences are installed to contain oil spilled on the sea in a certain area and prevent it from spreading over a wide area, and for example, to prevent pollution from spreading on the sea during dredging. Providing a membrane has also been practiced. In these cases, floating bodies on which sheet-like materials are suspended are connected in a ring to isolate areas where oil or pollutants are floating from the outside world with these floating bodies and sheets. However, if a ship collides with these, the annularly connected floating bodies will be damaged and oil or pollutants will spread out, which is disadvantageous.

Furthermore, for example, in order to carry out dredging and reclamation work, a seawall is installed, but since this seawall is installed protruding into the sea, if such structures are also built continuously surrounding a certain area, the above-mentioned dredging and reclamation work will occur. Like pipes, they can be dangerous to ships.

As described above, the present invention aims to solve the problem that it is difficult to discern the continuous state of structures or floating frames installed on the water or on the coast from a ship at night. The present invention provides a method for identifying obstacles to water transportation by providing signs on the continuum, thereby making it possible to identify the existence of these continuums from a ship.

Next, one embodiment of the present invention will be described based on FIG.

FIG. 1 is a schematic explanatory diagram of dredging and reclamation using a pump dredger. In the figure, 1 is a pump dredger, and the mud dredged by this pump dredger 1 is transported through a pipe 2, and the transported mud is discharged into a reclaimed area partitioned off by a seawall 3. The pipe 2 is constructed by connecting a large number of pipe members 4.4..., and each of these pipe members has floating bodies 5.5..., 6 on both sides.
．． 6... are attached, and the pipe 2 is suspended on the water surface by these floating bodies. And these floating bodies 5.5...
・Signal lights 7.7... are installed every 5 to 50 meters. Although the detailed structure of this indicator light 7 is omitted from illustration,
A battery is installed in the hollow tube, and the battery lights up a light bulb installed at the top of the hollow tube. In addition, the seawall 3 is also provided with indicator lights 7.7 similar to those described above.

With this configuration, when the marker lights 7.7... are turned on, the distance between them is 5 to 50 m, so that ships can see these marker lights 7.7..., for example, in a line, even at night. It can be understood that a continuum exists along these indicator lights 7.7.... At this time, each marker light 7.7... is attached to a floating body 5.5..., and since these floating bodies are attached to a pipe 2 which is connected to each other and whose movement range is restricted, the marker light position is is held almost at a fixed position with little fluctuation.

Next, another embodiment will be described based on FIG.

FIG. 2 shows an example of a pollution prevention floating frame, and this pollution prevention floating frame 11 is a horizontal cylindrical floating body 12.12.
... are connected in a ring shape, and each floating body 12 has a vertically long sheet 13 hanging therefrom. And pollution prevention floating frame 11
Auxiliary floating bodies 14.14" are provided on both sides at certain places, and these auxiliary floating bodies are connected to the floating body 12 and to weights 15.15 placed on the seabed, so that the influence of waves is directly transferred to the floating body 12. The pollution prevention floating frame 11 is held in a substantially fixed position while having a buffering effect so as not to affect the pollution.

The pollution prevention floating frame 11 configured in this way can confine pollution in a certain area by the floating body connected in an annular manner and the sheet vertically attached to the floating body, and prevent it from spreading to the outside world. Signal lights 7', 7', . . . similar to those described above are attached to the floating bodies 12 every 5 to 50 m. When these indicator lights 7゛, 7'', etc. are turned on at night, they can be seen as linear phase-related objects, and what is displayed by these indicator lights is said to be a continuum. In addition, since the beacon lights 7', 7', etc. are attached to floating bodies that are mutually restrained, their positions do not change much and are held almost in place to prevent any damage to the vessel. The position of an object can be displayed accurately.In the above, the indicator lights may not be attached to the floating body 12, but may be attached to the auxiliary floating bodies 14 provided here and there.

Although the above example uses a marker light, it is also possible to use a reflective film, a reflective mirror, or a reflective paint that shines when illuminated at night. Furthermore, a radio wave reflector or a radio wave transmitter is provided in place of these, and the reflected radio waves of the radio waves transmitted from the ship are received, or the radio waves transmitted from the radio wave transmitter are received and displayed on, for example, a cathode ray tube. Similarly, we can also identify the existence of a continuum.

In addition to the above, examples of devices provided with the identification means include breakwaters, structures for cultivating seaweed, fish reefs, and nets set for fishing.

As explained above, according to the present invention, a floating body on water, a structure in water or on water is provided with an identification means that can be recognized in a linear manner so as to identify that these are continuous bodies. By looking at these signs, ships navigating the area can know that what is being displayed is a continuum, and can avoid obstacles and conduct smooth traffic. This makes it possible to reduce the risk of ship traffic, especially at night, and also to avoid damage to floating bodies and structures. 1

[Brief explanation of the drawing]

FIG. 1 is a diagram illustrating the use of one embodiment of the method of the present invention, and FIG. 2 is a diagram illustrating the use of another embodiment. In the figure, 2 is a pipe as a floating structure, 3 is a seawall as a coastal structure, 5.5..., 6.6... is a floating body, 7
．． 7..., 7゛, 7''... is a beacon light as an identification means, and 14.14° is an auxiliary floating body. April 25, 1980

Claims (1)

[Claims] (11 Identification of floating bodies or structures that are continuous in a line indicating a certain area on the water, auxiliary floating bodies along this line, or structures that are continuous in the horizontal direction in the water, on the water, or on the coast) that the floating bodies or structures are continuous. A method for identifying water transportation obstacles by state, characterized in that identification means are provided at possible intervals.