JP4636754B2 - Pollution diffusion prevention film and pollution diffusion prevention device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
Pollution diffusion prevention used mainly to prevent the spread of contaminated water due to landfill sand and sludge during land reclamation work for the sea, rivers, etc., and harbor construction such as revetment work and channel dredging work The present invention relates to a membrane and a pollution diffusion prevention device.
[0002]
[Prior art]
A conventional pollution diffusion prevention film and a pollution diffusion prevention apparatus are installed such that a float containing a buoyant body floats on the water surface so as to surround a source of contaminated water. And the upper part of a pollution diffusion prevention film is connected to the lower side of the float.
[0003]
The anti-fouling diffusion film is sewn into a rectangular shape using a polyester canvas, etc., and has a circular shape in which a buoyant body such as air or styrene foam is housed in an upper portion with one side of the long side facing upward. It has a cross-sectional shape, is floated on the surface of the water, and is bolted to the lower side of the float connected at regular intervals. The pollution diffusion preventing film may be sewn and attached. And this pollution diffusion prevention film is attached to each of one side and the lower end of the middle part so that the middle chain for the weight and the lower chain that are rust-proofed are almost parallel to the installation direction of the float. And suspended in water over the entire length of the float. Further, the intermediate chain and the lower chain are supported by a lifting tool provided at a predetermined interval on the pollution diffusion preventing film.
[0004]
In this way, by providing the intermediate chain and the lower chain, it is possible to prevent the pollutant diffusion prevention film from rolling up due to water flow, and to increase the effect of preventing the polluted water diffusion of the pollution diffusion preventing device. .
[0005]
[Problems to be solved by the invention]
The pollution diffusion prevention film used in the pollution diffusion prevention apparatus as described above is the pollution diffusion prevention film, wherein the intermediate chain and the lower chain are supported by the hanging tool in a suspended state. Since it is not fixed to the membrane, the intermediate chain and the lower chain are shaken by the influence of water flow and tidal current. And especially the said intermediate chain provided in the intermediate part rubs against the said pollution diffusion prevention film, The problem that the said pollution diffusion prevention film is worn out and damaged has occurred.
[0006]
In view of these problems, the present invention is a pollution diffusion prevention film capable of preventing the weight attached to the intermediate portion from being shaken and worn by rubbing, and being damaged, and the pollution diffusion using this pollution diffusion prevention film. A prevention device is provided.
[0007]
[Means for Solving the Problems]
The pollution diffusion preventing film according to claim 1 has an intermediate weight and a lower weight attached to the intermediate portion and the lower end portion, respectively, and is installed on the lower surface of the float that is floated on the water surface and connected at almost constant intervals. by upper is mounted, mounted in the diffusion preventing film spill fouling that are suspended in water to the float, the intermediate portion on both sides in the depth direction, and substantially parallel installation direction of the previous SL float strip reinforcing fabric is and the intermediate weight is formed from a pair of divided portions, in a state sandwiching from both sides the previous SL pair of divided portions in a portion where the reinforcing cloth is mounted, a plurality in the installation direction of the float at regular intervals It is fixed .
[0008]
Further, it is also conceivable that each of the pair of divided portions is divided in a direction substantially parallel to the installation direction of the float, and is integrally connected by being deformable in the inner and outer directions of the region surrounded by the float. It is done. As a method for fixing the pair of divided portions, a method may be considered in which a convex portion is formed on one of the pair of divided portions and a concave portion is provided on the other side and fitted and fixed to each other.
[0009]
By doing so, even if the intermediate weight is affected by a water flow or the like, it can be prevented from moving with respect to the pollution diffusion preventing film and being rubbed to wear the pollution diffusion preventing film. In addition, by attaching a reinforcing cloth to the portion of the pollution diffusion prevention film that fixes the pair of divided portions, the contamination diffusion prevention film and the end portion of the fixing surface of the division portion are rubbed and worn and easily damaged. Can be protected.
[0010]
The pollution diffusion preventing film according to claim 2 is formed by dividing the pair of divided portions into block-shaped small pieces in a direction substantially parallel to the installation direction of the float, and the small pieces are formed at substantially constant intervals. It arranges so that the distance more than the length of a small piece part may be maintained, and the said small piece part is fixed to the state inserted | pinched by the pair from both surfaces.
[0011]
In this way, by increasing the contact area with the pollution diffusion prevention film by making the pair of divided portions into a block shape, it can be prevented that the force is locally applied and easily worn as in the case of the chain, Moreover, the flexibility of the pollution diffusion preventing film can be sufficiently ensured by fixing the pair of divided portions in a block shape with a gap therebetween.
[0012]
The pollution diffusion preventing film according to claim 3 is provided with a through hole for attaching the pair of divided portions so as to penetrate the reinforcing cloth, and a fixing hole provided in the through hole and the pair of divided portions. The pair of divided portions are fixed through screws.
[0013]
As described above, the intermediate weight can be reliably fixed to the pollution diffusion prevention film by fixing the pair of divided portions using screws, and thus the fixing surfaces of the pair of divided portions and the It is possible to prevent the pollution diffusion preventing film from being worn by rubbing.
[0014]
The pollution diffusion preventing device according to claim 4 is installed on the lower surface of the float which is installed on the water surface and connected at almost constant intervals. By attaching the upper part and suspending it in water, the number of parts that are easily damaged is reduced, so that maintenance work can be saved.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the pollution diffusion preventing film and the pollution diffusion preventing apparatus of the present invention will be described with reference to FIGS.
[0016]
As shown in FIG. 1, the pollution diffusion preventing apparatus 1 is mainly composed of a float 2 and a pollution diffusion preventing film 3. The float 2 is formed of rubber or vinyl chloride resin that is reinforced by adhering a canvas 2a to the surface with an adhesive, and air is sealed inside as a buoyant body so that the upper part 2b is cylindrical. It is floated and installed on the water surface 7 in a bulging state. At the lower end of the float 2, a band-shaped attachment portion 2 c that supports the pollution diffusion prevention film 3 is formed so that the longitudinal direction coincides with the axial direction of the float 2.
[0017]
The pollution diffusion preventing film 3 is formed using a canvas woven with synthetic fibers such as polyester excellent in weather resistance and chemical resistance, and is sewn in a rectangular shape when viewed from the front. Eyelets 3a are provided at equal intervals over the entire length. The pollution diffusion preventing film 3 is fixed to the mounting portion 2c by connecting a mounting hole 2d provided in the entire length of the eyelet 3a and the lower portion of the mounting portion 2c with a bolt or the like. A thin belt-like suspension part 3b is provided at the other end of the long side at regular intervals, and the suspension part 3b is subjected to a rust prevention process such as application of a resin paint (epotar etc.). The weight chain 4 is supported in a suspended state on the pollution diffusion preventing film 3 by forming an annular shape through the weight chain 4 (lower weight).
[0018]
Further, as shown in FIGS. 1 and 2, a strip-shaped reinforcing canvas 5 woven with polyester fibers or the like is disposed on both sides of the pollution diffusion preventing film 3 in the middle in the vertical direction in parallel with the float 2. The diffusion prevention film 3 is stretched over the entire length by sewing. A block-like intermediate weight 6 whose length in the vertical direction is shorter than the width of the reinforcing canvas 5 is substantially parallel to the float 2 along the reinforcing canvas 5 at the portion where the reinforcing canvas 5 is stretched. It is attached at equal intervals so that This interval is set to be about 1.5 times as long as the length of the intermediate weight 6 in the lateral direction. Thus, as shown in FIG. 1, the pollution diffusion preventing film 3 is in a state of hanging in a curtain shape on the float 2 in water because the weight is attached to the intermediate portion and the lower end portion.
[0019]
The intermediate weight 6 is divided in the inner and outer directions of the region surrounded by the float 2, and is divided into an inner small piece portion 6a and an outer small piece portion 6b having the same shape. The inner small piece portion 6a and the outer small piece portion 6b are made of steel and are formed in a substantially rectangular block shape as viewed from the front, and the surface is galvanized as a rust prevention measure. And the fixing hole 6c is penetrated and provided in one place of right and left seeing from the front, and when the inner small piece part 6a and the outer small piece part 6b are match | combined together, it will become the same position. Opened.
[0020]
As shown in FIGS. 1 and 3, the inner small piece portion 6 a and the outer small piece portion 6 b are respectively disposed on the inner side and the outer side of the pollution diffusion preventing film 3 so that the longitudinal direction is directed to the axial direction of the float 2. It arrange | positions in the state which pinched | interposed the prevention film 3 and the canvas 5 for reinforcement. Then, the fixing holes 6c, the pollution diffusion preventing film 3 and the through holes 3c and 3d provided in the reinforcing canvas 5 are made to coincide with each other, and the bolt 6d is inserted into the fixing hole 6c of the outer small piece portion 6b. 3 and the reinforcing canvas 5 are penetrated. Then, the intermediate weight 6 is fixed to the pollution diffusion preventing film 3 by projecting the tip portion from the inner small piece portion 6a and tightening the nut 6e.
[0021]
Next, the operation of the pollution diffusion prevention apparatus 1 using the intermediate weight 6 of the embodiment will be described. In various constructions of the ocean and rivers, the water is stirred by a water flow or a construction machine, so that the polluted water is brought to the surroundings. Try to spread. Therefore, when the float 2 is continuously floated on the water surface 7 so as to surround the generation source of the polluted water, the diffusion of the polluted water is suppressed by the pollutant diffusion preventing film 3 provided in a curtain shape below the float 2. The water is surrounded by the pollution diffusion preventing film 3. And since the polluted water that has been retained causes the polluted particles to influence each other and naturally solidifies and settles, the diffusion to the outside of the area surrounded by the pollution diffusion prevention film 3 is greatly reduced. It is done.
[0022]
At this time, when the pollution diffusion prevention film 3 is rolled by the water flow, the intermediate weight 6 is fixed to the pollution diffusion prevention film 3 with bolts 6d, and the wear-resistant polyester is attached to the attachment portion of the intermediate weight 6. Since the reinforcing canvas 5 formed by using the canvas woven with fibers is stretched, the pollution diffusion preventing film 3 can prevent the intermediate weight 6 from being worn by rubbing, and the labor of repair and maintenance can be saved. be able to.
[0023]
And since the intermediate weight 6 is divided into a plurality of small pieces and provided at regular intervals, the pollution diffusion preventing film 3 can be sufficiently flexible and surrounded by the float 2 even when subjected to intense water flow. Can be easily deflected in and out of the region, so that the force received by the water flow is absorbed and the load on the pollution diffusion prevention film 3 and the attachment portion 2c and the burden on the pollution diffusion prevention film 3 itself are absorbed. It can be reduced.
[0024]
【The invention's effect】
In the pollution diffusion preventing film of claim 1, the intermediate weight is formed from a pair of divided portions, and the middle portion is sandwiched between the pair of divided portions where the reinforcing cloth of the pollution diffusion preventing film is attached. Fix the weight. By doing so, it is possible to prevent the contamination diffusion preventing film from being worn and damaged by rubbing the intermediate weight. In addition, by attaching a reinforcing cloth to the pollution diffusion prevention membrane, it is possible to protect the portion where the end of the fixed surface of the intermediate weight hits the portion where the pollution diffusion prevention membrane is easily damaged, and to prevent the pollution diffusion prevention membrane from being damaged. Therefore, the trouble of repair and maintenance can be saved.
[0025]
The pollution diffusion preventing film according to claim 2 is formed by dividing each of the pair of divided portions into block-shaped small pieces in a direction substantially parallel to the installation direction of the float, and the small pieces are formed at substantially constant intervals. They are arranged so as to maintain a distance equal to or longer than the length of the part, and fixed to the pollution diffusion prevention film in pairs from both sides. By doing so, since the flexibility of the pollution diffusion preventing film is not impaired, the force received from the water flow can be relaxed and the burden on the pollution diffusion preventing apparatus can be reduced, so that the life can be extended. Further, by making the small piece block into a block shape and increasing the contact area with the pollution diffusion preventing film, it is possible to prevent the portion from being easily worn due to a local force applied like a chain.
[0026]
According to a third aspect of the present invention, the pollution diffusion preventing film is formed by passing a screw through a through hole provided so as to penetrate the reinforcing cloth and a fixing hole provided in the pair of divided parts, and fixing the pair of divided parts with the screws. In addition, the fixed surface of the intermediate weight and the pollution diffusion preventing film are not rubbed. For this reason, it is possible to prevent the pollution diffusion preventing film from being damaged by the intermediate weight.
[0027]
The pollution diffusion prevention device according to claim 4 is installed on a float on the water surface, and the pollution diffusion prevention film according to claim 1, 2 or 3 is attached to a float connected at almost constant intervals. The number of parts that are easily damaged can be reduced and maintenance work can be saved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a pollution diffusion preventing apparatus according to the present invention.
FIG. 2 is a perspective view showing an embodiment in a state where an intermediate weight according to the present invention is attached.
FIG. 3 is a cross-sectional view showing an embodiment in a state in which an intermediate weight according to the present invention is attached.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pollution diffusion prevention apparatus 2 Float 2a Canvas 2b Upper part 2c Attachment part 2d Attachment hole 3 Pollution diffusion prevention film 3a Eyelet 3b Hanging part 3c Through hole 3d Through hole 4 Weight chain 5 Reinforcement canvas 6 Intermediate weight 6a Inner piece 6b Outer small piece 6c Fixing hole 6d Bolt 6e Nut 7 Water surface

Claims (4)

An intermediate weight and a lower weight are attached to the intermediate portion and the lower end portion, respectively, and the upper portion is attached to the lower side of the float that is floated on the water surface and connected at almost constant intervals. in antifouling pollution diffusion preventing film that has been suspended in water,
The middle portion on both sides in the depth direction, is mounted substantially parallel to the band-shaped reinforcing fabric installation direction before Symbol float,
The intermediate weight is formed from a pair of divided portions, the divided portions before Symbol pair in the portion where the reinforcing cloth is attached in a state sandwiching from both sides, a plurality in the installation direction of the float is fixed at regular intervals A pollution diffusion prevention film characterized by that.   The pair of divided portions are each divided into block-shaped small pieces in a direction substantially parallel to the installation direction of the float, and the small pieces are maintained at a distance equal to or greater than the length of the small pieces at a substantially constant interval. 2. The pollution diffusion preventing film according to claim 1, wherein the small piece portions are fixed in a state of being sandwiched in pairs from both sides.   A through-hole for attaching the pair of divided portions is provided so as to penetrate the reinforcing cloth, and a screw is passed through the through-hole and a fixing hole provided in the pair of divided portions, so that the pair of The pollution diffusion preventing film according to claim 1, wherein the divided portion is fixed.   The upper part of the pollution diffusion prevention film according to claim 1, 2 or 3 is attached to the lower side of the float which is floated on the water surface and connected at almost regular intervals, and is suspended in water. Pollution diffusion prevention device in the state.

Images