JP2607781Y2 - Anti-pollution membrane - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pollution control membrane for use in oceans and rivers.

[0002]

2. Description of the Related Art In marine civil engineering works and river works, in order to prevent the spread of pollution generated by landfills and dredging, the construction site is surrounded by a pollution prevention film or a pollution prevention film is installed downstream. Such a pollution prevention film is configured in a unit shape by a float portion and a curtain portion that closes and precipitates the pollution connected thereto. The unit of this anti-pollution membrane is as wide as about 20m, and waves and currents act on this curtain part, and when the weather conditions exceed the design conditions such as typhoon or stormy weather, the curtain part will be In addition to being drawn into the water, the float may be buried, and the float and the curtain may be damaged or run off.

[0003] Accordingly, a curtain-preventing pollution control film has been devised which can withstand weather conditions exceeding such design conditions. As a conventional example of such a pollution prevention film, there is a technique disclosed in Japanese Utility Model Publication No. 2-11453. Hereinafter, this technique will be described with reference to the drawings. FIG. 4 is an explanatory view. As shown in the figure, the side ends of the sheet-like film in the form of a goodwill are overlapped with their adjacent ends, and the upper part is fixed, and the lower part is loosely movable by an annular fastener. It is linked.

With such a curtain portion, the external force acting on the curtain portion flows through the goodwill-like gap to reduce the resistance, so that the external force acting on the float portion and the curtain portion can be reduced.

[0005]

However, according to the above-mentioned technology, the generated pollutant flows out of the curved and deformed goodwill along with the water, even in a normal state, so that the pollutant is closed and settled. There is a problem that the function is greatly reduced.

[0006]

SUMMARY OF THE INVENTION Therefore, in the present invention, in a pollution control film comprising a float portion and a curtain portion, the curtain portion is divided into long goodwill materials , and the relative length of each of the long materials adjacent to each other is divided. And a plurality of side portions to be connected to each other so as to be in close contact with each other by an extendable restraining cable.

[0007]

According to the above construction, the anti-pollution film is provided in such a manner that, during normal times, almost no gaps are opened between the long materials with respect to the flow of water, and even if a slight slit is formed. In addition, the curtain can close the contaminants, settle them, and allow water to flow.

If the design conditions are exceeded due to a typhoon, abnormally high water, or the like, the restraining cable connecting the long members is stretched due to an abnormal tide or flow velocity, and a gap is formed between the long members. Water can flow out therefrom, so that excessive stresses are relieved and the curtains and floats are not stressed to destroy them.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view, FIG. 2 is an explanatory view showing an operating state in a normal state, and FIG. 3 is an explanatory view showing an operating state in an abnormal state. In FIG. It is a curtain part to be attached, and a weight cone 2 is attached to a lower part, and an upper part is connected to the float part 3 to constitute a unit.

In view of this, the curtain 1 of each unit is divided from the base into long, long members 4 at predetermined intervals in the longitudinal direction, and the lower conical cone 2 is also separated accordingly. Each of the long members 4 is connected to an adjacent long member 4 at a predetermined interval by a stretchable restraining cable 5 having a predetermined tensile force such as rubber or a spring so that the long members 4 come into close contact with each other. It is. Note that the tensile force of the restraint cable 5 is determined based on the mounting interval of the restraint cable 5, the number of mountings, the height of the curtain portion, the tidal current in a normal sea area where the cable is installed, the flow velocity of a river, and the like.

According to the above configuration, each unit is continuously arranged to surround the site or to be disposed downstream of the site, and the long members 4 at the ends of each unit are also connected to each other by the restraining cable 5 to be integrated. It is constructed and fixedly installed by the mooring line 6. As shown in FIG. 2, the anti-pollution film arranged in this manner has almost no gap between the long members 4 with respect to the flow of water in normal times, and even if it is opened, there is a slight slit. Is formed to the extent that the curtain 1 closes the contaminants, causes sedimentation, and allows water to flow.

If the design conditions are exceeded due to a typhoon, abnormal water increase, or the like, as shown in FIG. 3, the restraining cable 5 connecting the long members 4 is extended by an abnormal tide or flow velocity. Thus, there is a gap 7 between the long members 4 so that water can flow out therefrom, whereby excessive stress is released and the curtain portion 1 and the float portion 3 break them. Such stress is not applied.

In the above description, the long members of the goodwill shape are in contact with each other at the sides, but the structure may be such that both sides of the long members are overlapped with each other and connected by a restraining cable. .

[0014]

According to the present invention described in detail above, in the pollution prevention film composed of the float portion and the curtain portion,
The curtain part is divided into long goodwill-shaped materials, and each adjacent long material is connected by a stretchable restraining cable with a pre-set tensile force. In the event of an abnormality, the flowing water causes the restraining cord to stretch, leaving a gap between the long members and allowing water to flow out therefrom, thereby releasing excessive stress. This has the effect of preventing the float portion and the curtain portion from being damaged or washed away.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment.

FIG. 2 is an explanatory view showing an operation state in a normal state.

FIG. 3 is an explanatory diagram showing an operation state at the time of abnormality.

FIG. 4 is an explanatory diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Curtain part 3 Float part 4 Long material 5 Restraint rope

Claims (1)

(57) [Scope of request for utility model registration] An anti-pollution film comprising a float portion and a curtain portion, wherein the curtain portion is divided into long members having a goodwill shape, and a plurality of opposing side portions of the long members adjacent to each other are divided. An anti-pollution membrane, characterized in that the parts are connected so as to be in close contact with each other by means of a stretchable restraining cable.