JP6007233B2 - Pollution prevention fence device and method for extending the same - Google Patents

Description

  The present invention relates to a pollution prevention fence device for preventing diffusion of pollutants in water areas such as lakes, marshes, agricultural dams, rivers, harbors, coasts, and the like, and a method for extending the same.

An antifouling fence composed of a columnar float and a strip-shaped curtain that hangs down integrally with the float is widely known (Patent Document 1).
As for the shipment form of the pollution prevention fence, a curtain portion is folded in a small size, and a plurality of places are wrapped around a packing string made of polypropylene or the like for packing.
When the antifouling fence is deployed in the local waters, the fence is unfolded and the fence is folded and the fence is unfolded.
The reason for extending the fence without unpacking the packing string is that if the curtain is unpacked and the curtain is suspended, the curtain is subjected to a large amount of water resistance and the fence cannot be smoothly extended.
The above-mentioned work for expanding the anti-fouling fence and removing the packing string are performed exclusively using a small ship. However, if the fence is installed in a mountainous area where it is difficult to introduce the ship, these work should be performed by a diver. Is going.

Japanese Patent Laid-Open No. 4-64614

The above-described technique for extending a pollution prevention fence has the following problems.
<1> The work to expand the pollution prevention fence not only requires a small ship and about 6 or 7 workers, but also requires a lot of time and labor to carry in and out of the ship. It takes a long time to work.
<2> When the ship is small, the ship shakes during work due to the influence of waves and crosswinds.
For this reason, workers are forced to work in an environment where the scaffolding is unstable, and there is a risk of accidental water fall.
<3> For example, when a pollution prevention fence is deployed in a dangerous water area in which radioactive harmful substances are mixed, it is difficult to ensure the safety of workers even if a ship is used, and even diving work cannot be performed.
The technology for extending the pollution prevention fence in such a dangerous water area has not been studied at all, and a proposal of a corresponding technology capable of safely extending the pollution prevention fence is desired.

The present invention has been made in view of the above points, and an object of the present invention is to provide the following pollution prevention fence device and a method for extending the same.
<1> The antifouling fence can be safely deployed by work from land without resorting to ships or divers.
<2> The folded curtain can be easily deployed by remote control.
<3> Able to accurately sample the pollution status of water bodies without impairing the pollution prevention function of the fence.

The present invention is an antifouling fence device having a fence main body in which a curtain is suspended along a float, and a bundling mechanism capable of bundling the fence main body, and the bundling mechanism is externally spaced along the fence main body. A plurality of tying bands, and an operating line having a total length that can be disposed across the plurality of tying bands, and separating a part of the tying band by remote control, By inserting into or pulling out from the overlapping portions at both ends, it is possible to connect or disconnect both ends of the plurality of binding bands, and using the binding mechanism, the packaging of the fence body in a state where the curtain is folded and The unpacking of the fence body is performed.
In another embodiment, the cable tie includes a band member having a total length capable of enclosing the fence body in a state in which the curtain is folded in a small size, and connection elements respectively provided at both ends of the band member, and the operation cord is connected It can be inserted into or removed from the overlapped part of the element.
In another embodiment, the cable tie may be attached to a part of the fence main body so that it cannot be detached.
In another embodiment, a measurement sheet with a weight consisting of inner and outer sheets provided opposite to both surfaces of the curtain is additionally provided, and the curtain and the measurement sheet are folded using the binding mechanism. Pack the fence body and unpack the fence body.
Further, the present invention is a method for extending a pollution prevention fence device having a fence body that hangs a curtain along a float, and a bundling mechanism capable of binding the fence body, wherein any one of the pollution prevention fence devices is provided. The fence body is extended to a predetermined range in the water area in a state where it is used and packed by the binding mechanism, and the operation cords constituting the binding mechanism are extracted to remotely operate the both ends of the plurality of binding bands from the land. Then, the curtain or the measurement sheet is suspended in water by its own weight.
In another form, the fence body is routed between the water bodies and routed, and the fence body connected to the tip of the fence body is pulled on the land side, so that the fence body remains in the state packed in the binding mechanism. Extend to the water area.

Since the pollution prevention fence apparatus of this invention has the structure demonstrated above, it is provided with at least one of the following effects.
<1> Not only can the fence body be extended from the land side, but also the curtain can be unfolded and suspended from the same land side by remote control via the bundling mechanism.
Therefore, the pollution prevention fence can be extended with a small number of people at a low cost in a short time.
<2> The fence body can be extended and the curtains can be hung and suspended without relying on small ships or divers.
Especially in the case of water containing harmful substances, it is possible to protect workers from danger and to safely deploy a pollution prevention fence. <3> The number of components of the bundling mechanism is small and the cost is low. The bundling mechanism can be opened with a simple operation by simply pulling out the cable.
<4> By additionally providing a measurement sheet, it is possible to accurately sample the pollution status of the water area without impairing the pollution prevention function of the fence.
<5> Since the measurement sheet can be arranged along the water depth direction, sampling according to the water depth is possible, and the contamination state at a specific water depth can be accurately inspected.

The perspective view of the pollution prevention fence apparatus which concerns on the Example of this invention. Cross section of pollution control fence device with curtains folded and packed The perspective view of the both ends of a cable tie at the time of releasing. The perspective view of the both ends of a cable tie at the time of a connection. Partial enlarged view of the fence body for explaining an example of tying the binding band Model diagram for explaining the method of extending the pollution prevention fence device Model diagram for explaining how to fold and unfold a folded curtain Sectional drawing of the pollution prevention fence apparatus which concerns on the other Example of this invention.

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

<1> Outline of the pollution prevention fence device.
Referring to FIGS. 1 and 2, the pollution prevention fence apparatus 10 includes a fence body 20 and a bundling mechanism 30 that can bind the fence body 20.
Each component will be described in detail below.

<2> The main fence body.
The fence main body 20 on which the present invention is predicated is a pollution prevention fence including a columnar float 21 and a strip-shaped curtain 22 that hangs down integrally with the float 21, and includes, for example, a known silt fence, an oil fence, and the like.
The float 21 is formed by covering a cylindrical polystyrene foam with a bag-like sheet made of a resin material such as PVC tarpaulin.
The curtain 22 that restricts the permeation of pollutants is a foldable flexible sheet, and a weight 23 made of a chain or the like is attached to the lower end thereof.
The material of the curtain 22 includes a hardly water-permeable canvas and a water-impermeable sheet.
In addition, a tension belt for tension reinforcement may be provided along the transverse direction of the curtain 22 as necessary.

<3> Bundling mechanism.
The binding mechanism 30 is a device for packing the fence body 20, has a plurality of binding bands 40 that can be wound around the fence body 20, and has a total length that can be disposed across the plurality of binding bands 40. The operation cord 50 for separating a part of the binding band 40 is provided.
The binding band 40 is disposed along the fence body 20 with a gap.

<3.1> Cable tie.
Referring to FIGS. 2 to 4, the binding band 40 includes a band member 41 having a total length that can surround the fence body 20 in a state in which the curtain 22 is folded small, and through holes provided at both ends of the band member 41. And connecting elements 42 and 43 formed with 42a and 43a.
The band material 41 is made of rope material, string material, or belt material, and the material is made of resin, metal, or fiber.
The connecting elements 42 and 43 can be superposed to match the through holes 42a and 43a. In this example, the connection elements 42 and 43 are shown as being formed of a separate member from the band material 41. However, the connection elements 42 and 43 are the same as the band material 41 by forming a loop or the like directly at the end of the band material 41. You may form with the member of.

As shown in FIG. 5, if the band member 41 is locked to the fall-preventing attachment tag 24 provided on the uppermost part of the curtain 22, the binding band 40 can be attached to the fence body 20 in an inseparable manner. it can.
The mounting position of the mounting tag 24 is not limited to the above position, and may be a part of the float 21 or a part of the curtain 22.
If the binding band 40 is attached to the fence body 20 in an inseparable manner, the binding band 40 can be used repeatedly.
Further, the locking means for the band member 41 is not limited to the attachment tag 24, and may be attached by being inserted into a part of the curtain 22.

<3.2> Operation cord.
The operation cord 50 is a rope member that can be inserted into the through holes 42 a and 43 a of the connection elements 42 and 43 provided at the ends of the binding band 40, and has a total length that can be disposed across the plurality of binding bands 40.

<4> A method for binding curtains.
With reference to FIGS. 1 and 2, a method for binding the curtains 22 constituting the fence body 20 will be described.
First, the band material 41 of the binding band 40 is wound around the circumferential surface of the curtain 22 folded in a bellows shape and the float 21, and then the connecting elements 42 and 43 at both ends of the band material 41 are superposed and aligned through. The operation cord 50 is inserted into the holes 42a and 43a to connect the both ends of the tying band 40 inseparably. The connection of the binding band 40 is held by the rigidity of the operation cord 50.
The operation cord 50 is shared by all the binding bands 40 by inserting the single operation cable 50 over all the binding bands 40.
By simply repeating the work of winding the binding band 40 by the binding mechanism 30 and the connecting work of the binding band 40 by the operation cable 50, the fence body 20 can be bound over the entire length.

<4.1> Curtain bundling interval.
The bundling interval of the curtains 22 by the bundling mechanism 30 is selected in consideration of the curtain length of the curtains 22 and the like so that the curtains 22 do not droop greatly.

<4.2> Curtain bundling time.
The bundling operation of the curtain 22 by the bundling mechanism 30 is performed in advance in the factory or before the expansion operation is performed on the site.

[Method of spreading pollution prevention fence device]
Next, a case where the antifouling fence device 10 is extended from the right bank B to the left bank C of the water area A will be described with reference to FIGS.

<1> Lead cable routing.
As shown in FIG. 6, a leading rope 51 having a length capable of crossing the water area A is routed from the right bank B toward the left bank C.
As a means for routing the lead 51, a casting method using a spear, a method of throwing a weight attached to the tip of the lead 51, a method of shooting by connecting the tip of the lead 51 to a bullet, or the like can be adopted. .

<2> Extension of the pollution prevention fence device by drawing.
The tail end of the leading cable 51 stretched between the two banks B and C is connected to the tip of the fence body 20, and the fence body 20 together with the leading cable 51 from the left bank C side is manually or using a hoisting machine or the like. The antifouling fence device 10 is extended to a predetermined range of the water area A by pulling.
When the fence body 20 is drawn, the folding mechanism 22 is restrained from being unfolded by the bundling mechanism 30 so that the resistance of the water is less likely to be received.
If there is no space on the left bank C, a fixed pulley may be installed on the left bank C, the leading cable 51 may be wrapped around the fixed pulley, and the leading cable 51 may be drawn on the right bank B side.
Thus, the work pollution prevention fence apparatus 10 can be safely extended by pulling the leading line 51 from the land side without using a ship.

<3> Curtain unfolding and hanging by remote control.
An operation cord 50 is routed over the entire length of the fence body 20 that is extended between the two banks B and C.
As shown in FIG. 7, on either side of the left bank C or the right bank B, either the left or right of the operation cord 50 is pulled to extract the operation cord 50 from both ends of the plurality of binding bands 40.
When the operation cord 50 is extracted from both ends of the binding band 40, both ends of the band material 41 constituting the binding band 40 are cut off as shown in FIG. 3, and as a result, the folded curtain 22 is unfolded by its own weight. Settling in water.
By continuing the extraction operation of the operation cord 50, the binding by the binding band 40 is released one after another, and the deployment range of the curtain 22 is expanded.
By pulling the operation cord 50 from the land side in this way, the binding of each binding band 40 can be released and the curtain 22 can be deployed underwater over the entire length of the fence body 20.

In the present invention, since the work for extending the fence body 20 and the work for suspending and unfolding the curtain 22 can be performed on the land side, no water work using a ship or diving work by a diver is required.
Therefore, even in hazardous environments where hazardous substances (such as soil particles with toxic substances, cesium, dioxins, etc.) are mixed in the water area B, all work can be done on the land side, so the safety of workers It is possible to expand the pollution prevention fence device 10 while securing the above.

[Other embodiments]
In the following, other embodiments will be described. In the description, the same parts as those in the above-described embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

<1> Other pollution prevention fence devices.
In FIG. 8, a measurement sheet 60 is additionally provided in addition to the fence main body 20 and the separable bundling mechanism 30 provided on the fence main body 20, and the measurement function of the pollutant is given to the turbidity prevention fence apparatus 10. The pollution prevention fence apparatus 10 which concerns on another Example is shown.
8 shows a state after the curtain 22 is unfolded and hung, the illustration of the bundling mechanism 30 is omitted.

<2> Measurement sheet.
The measurement sheet 60 includes inner and outer sheets 61 and 62 provided so as to be opposed to both surfaces of the curtain 22.
The inner and outer sheets 61 and 62 are made of the same material having the same water permeability as the curtain 22. This is because the front and back surfaces of the curtain 22 are substituted for the inner and outer sheets 61 and 62.
The upper ends of the inner and outer sheets 61 and 62 are fixed to the upper part of the curtain 22 or are wound around the float 21 and hang down.
Each of the sheets 61 and 62 has a weight 63 at the lower end thereof, and is connected to a lifting string 65 with a floating body 64, and the inner and outer sheets 61 and 62 can be individually pulled up using each lifting string 65. ing.

<2.1> Purpose of installation of measurement sheet.
The reason why the measurement sheets 60 are arranged facing both surfaces of the curtain 22 is to confirm the fence function (contamination prevention function of the pollutant) of the curtain 22 and to sample the pollutant.
As a method for evaluating the fence function of the curtain 22 deployed on the site, there is a method in which a part of the curtain 22 is cut and sampled, and a pollutant adhering to the front and back surfaces of the sampling piece is measured. When the part is cut off, the fence function by the curtain 22 is lost.
In this example, in view of this point, it is possible to sample the pollutant through the inner and outer sheets 61 and 62 of the measurement sheet 60 arranged on both sides of the curtain 22 without cutting out a part of the curtain 22, thereby the fence of the curtain 22. In addition to evaluating function, it is possible to identify attached pollutants.

<2.2> Measuring sheet bundling means.
When the measurement sheet 60 is integrally attached to the fence body 20, it is only necessary to fold the measurement sheet 60 together with the curtain 21 and previously bind it with the binding mechanism 30 described above.

<2.3> Installation range of measurement sheet.
The measurement sheet 60 is provided in a partial section of the curtain 22 that requires measurement, but may be provided over the entire length of the curtain 22.
Considering workability and safety when sampling a pollutant using a ship, it is desirable to partially provide the fence body 20 with a measurement sheet 60 set to a length and weight that are easy to pull up.

<3> A method for extending a pollution prevention fence device.
The extension method of the pollution prevention fence apparatus 10 in this example is the same as the extension method of the Example mentioned above.

<4> A method for unfolding and hanging the measurement sheet by remote control.
To unfold and suspend the measurement sheet 60, as in the operation method described above, either the left or right of the operation cord 50 shown in FIG. 7 is remotely pulled and operated from both ends of the plurality of binding bands 40. The cord 50 is extracted, both ends of the band material 41 constituting the binding band 40 are cut off, and the inner and outer sheets 61 and 62 are unfolded by the dead weight together with the folded curtain 22 and suspended in water.

<5> A measurement method using a measurement sheet.
If the pollutant in the water area A is included, it adheres to the sheet surfaces of the inner and outer sheets 61 and 62.
Each of the inner and outer sheets 61 and 62 is pulled up on the water using the pulling string 65 from the ship, and a part thereof is excised and sampled.
The excised pieces of the sampled inner and outer sheets 61 and 62 are put on a dedicated measuring machine to measure the type and concentration of the pollutant.

<6> Effects of this example.
In this example, when sampling the pollutant, the front and back surfaces of the curtain 22 are substantially sampled by cutting off a part of the inner and outer sheets 61 and 62.
Therefore, since it is not necessary to cut out the curtain 22, the fence function of the curtain 22 is not lost.
Further, when the curtain 22 is cut and sampled, there is a possibility that the front and back of the curtain 22 may be mistaken. However, in this example, the inside and outside sheets 61 and 62 substitute for the front and back of the curtain 22, so that the sample is not mistaken.
Moreover, if the measurement results of the inner and outer sheets 61 and 62 are remarkable, the fence function (the function of preventing the diffusion of pollutants) of the curtain 22 extended in the water area A can be demonstrated.
Furthermore, since the measurement sheet 60 is arranged along with the curtain 22 along the water depth direction, the measurement sheet 60 directly reflects the contamination state according to the water depth.
Therefore, sampling according to the water depth is possible, and the contamination state at a specific water depth can be accurately inspected.
In particular, this example is suitable for measuring harmful substances in a dangerous water area A in which harmful substances harmful to the human body (earth particles, cesium, dioxins, etc., to which harmful substances are attached) are mixed.

10 ... Pollution prevention fence device 20 ... Fence body 21 ... Float 22 ... Curtain 23 ... Weight 30 ... Bundling mechanism 40 ··· Binding band 41 ··· Band material 42 ··· Connection element 42a of the band material ··· Through hole 43 ··· Connection element 43a of the band material ··· Through hole 50 ... Operation cord 60 ... Measurement sheet 61 ... Inner sheet 62 ... Outer sheet 63 ... Weight 64 ... Floating body 65 ... ... Pulling string

Claims (7)

A pollution prevention fence device having a fence body that hangs a curtain along a float, and a bundling mechanism capable of bundling the fence body,
The binding mechanism includes a plurality of binding bands that are externally spaced along the fence body, and
The operation cord has a total length that can be disposed across the plurality of binding bands, and separates a part of the binding bands by remote operation,
By inserting or pulling out the operation cord from the overlapping portions at both ends of the binding band, it is possible to connect or disconnect both ends of the plurality of binding bands,
Using the bundling mechanism, the fence body is packed in a state where the curtain is folded, and the fence body is unpacked.
Pollution prevention fence device.   The cable tie includes a band member having a total length capable of enclosing the fence body in a state in which the curtain is folded in a small size, and connection elements provided at both ends of the band member, and the operation cord is provided at the overlapping portion of the connection element. The antifouling fence device according to claim 1, wherein the antifouling fence device can be inserted or extracted.   The pollution prevention fence device according to claim 1 or 2, wherein the binding band is attached to a part of the fence body so as not to fall off.   Further comprising a measuring sheet with a weight consisting of inner and outer sheets provided opposite to both surfaces of the curtain, and using the binding mechanism, packaging the fence body with the curtain and the measuring sheet folded. The anti-contamination fence device according to any one of claims 1 to 3, wherein the fence body is unpacked. A method of extending a pollution control fence device having a fence body that hangs a curtain along a float, and a bundling mechanism capable of binding the fence body,
Using the pollution prevention fence device according to any one of claims 1 to 3,
Extend the fence body to a predetermined area of the water area while packing with the binding mechanism,
The curtain is suspended in water by its own weight, by pulling out the operation cord constituting the binding mechanism and remotely operating the both ends of the binding bands from the land.
How to extend pollution prevention fence equipment. A method of extending a pollution control fence device having a fence body that hangs a curtain along a float, and a bundling mechanism capable of binding the fence body,
Using the pollution prevention fence device according to claim 4,
Extend the fence body to a predetermined area of the water area while packing with the binding mechanism,
The curtain and the measurement sheet are suspended underwater by their own weight by pulling out the operation cord constituting the binding mechanism and remotely operating the both ends of the plurality of binding bands from the land.
How to extend pollution prevention fence equipment.   By traversing the leading wire between the water areas and pulling the leading cable connected to the tip of the fence body on the land side, the fence body is brought into a predetermined range of the water area while being packed by the binding mechanism. The method for extending a pollution-preventing fence device according to claim 5 or 6, characterized in that it is extended.

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