JPH0414208B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a silt protector that can reliably capture silt, earth and sand generated during underwater civil engineering work, etc.

(Prior art) Conventionally, as shown in Fig. 7, a float 4 was placed on the sea.
A frame body 3 having 2 was installed to prevent the spread of silt, etc., generated during underwater civil engineering work into the open ocean (Japanese Patent Application Laid-Open No. 57-48011).

However, although this device has the advantage of being able to reliably block silt etc. with its membrane body 2, when sudden water pressure is applied to the membrane body 2, there is no place for the water flow to escape, and therefore, the membrane body 2 or between the frames 3 and 5 on which the membrane body 2 is stretched, pressure is applied to the joints, resulting in damage.

In addition, since this product is designed to block silt, etc., and not to trap it, silt, etc. may settle inside the silt protector 1, and after the construction is completed,
When the silt protector 1 is removed, the silt and the like are spread into the open ocean by water currents, causing water pollution in the ocean.

(Problems to be Solved by the Invention) This invention solves the problem that even when sudden water pressure is applied to the membrane 2, the connecting portion of the membrane 2 or the connecting portion of the frames 3 and 5 on which the membrane 2 is stretched is fixed. The object of the present invention is to provide a silt protector that can reliably capture silt and the like without damaging the silt and the like, and can prevent sea water pollution.

(Means for Solving the Problems) The present invention was made in view of the above-mentioned problems, and provides a silt trapping member comprising a rope-like core and a tuft-like part attached around the rope-like core. A large number of silt protectors are placed side by side between the upper frame and the lower frame, and even if sudden water pressure is applied to the membrane, there will be no damage between the upper and lower frames of the silt protector. The water flow passing between the stretched silt trapping members (indicated by arrows in Figure 3) prevents damage to the membrane or the connecting parts of the frame to which the membrane is stretched, as in the past. do not have. Furthermore, the large number of tufts reliably captures silt and the like, thereby preventing sea water pollution.

(Example) Hereinafter, this invention will be explained in detail according to the example shown in FIGS. 1 to 4.

Now, FIGS. 3 and 4 are a perspective view and a sectional view of the entire device of the silt protector 20 according to the present invention.

The silt protector 20 according to the present invention includes an upper frame body 21 having floats 22 arranged at equal intervals, a large number of silt trapping members 10 arranged in parallel at predetermined intervals under the upper frame body 21, and the silt trapping members 10
The lower frame body 25 is connected to the lower end of the frame body 25 and has anchors 26 arranged at equal intervals.

For example, the upper frame 21 has a length of 25 m, a height of 30 cm,
It is shaped like a square pipe with a width of 30 cm, and a large number of floats 22 are installed at equal intervals inside the pipe. This float may be of any type and may have the same length as the frame. A bonding cloth 23 is bonded below the upper frame 21 in the longitudinal direction.

Eyelets 24 (inner diameter 1.5 cm) are attached near the lower end of the bonding cloth 23 at intervals of about 25 cm. At the bottom of the upper frame 21, silt trapping members 10 are arranged in a curtain-like manner and stretched at intervals of about 25 cm.
The length of the silt capture member 10 is adjusted depending on the depth of the seabed.

As shown in FIGS. 1, 2 and 3, the silt capture member 10 consists of a rope-like core 11 and a tuft 12 attached around the core. The rope-like core 11 is made by twisting together eight pieces of polypropylene tape 14 bundled into a string shape with a diameter of about 2 mm.

This rope-like core 11 is attached to an eyelet 24 attached to the vicinity of the lower end of the bonding cloth 23 of the upper frame 21.
The upper frame body 21 and the silt capturing member 10 are joined together.

As shown in FIGS. 3 and 4, the tufted portion 12 is attached around the rope-like core 11, and the tufted portion 12 carries a large number of loop-like fiber bundles 15 around the rope-like core 11. It is constructed by attaching it radially around the area.

As an example of the tufted part 12, as shown in FIGS. 1 and 2, there are 2
One loop-shaped fiber bundle 15 is wound, and the winding thread 13 is alternately wound with these two loop-shaped fiber bundles 15.
The two loop-shaped fiber bundles 15 weave the core 11 in a braided manner to form the rope-shaped core 11.
Loop-shaped fiber bundles 15 are attached radially around the tufted portion 12. This tufted part 12
The loop-shaped fiber bundle 15 is twisted spirally,
The length of the staple yarn is approximately 13 cm, and the length of the staple yarn is 6 cm, 1.5 cm.
Denier ones are better. And this tufted part 12
Silt, earth and sand generated during construction are captured between the staples constituting the loop-like fiber bundles 15 and between the loop-like fiber bundles 15, and are separated from small particles such as silt and earth. It is now able to capture even large objects without omission.

Here, especially when particles such as silt and earth and sand generated during construction are relatively large, the tufted portion 12
The loop-shaped fiber bundles 15 may be simply formed radially around the periphery of the core body instead of being twisted spirally, thereby making it possible to trap even more relatively large silt, earth and sand.

Furthermore, anchors 26 are installed at intervals of approximately 25 cm below the rope-like core 11 of the silt trapping member 10 described above.
A lower frame body 25 is connected thereto.

For example, as shown in FIGS. 3 and 4, the lower frame 25 has a square pipe shape with a length of 25 m, a height of 30 cm, and a width of 30 cm. is installed inside and extends the silt trapping member 10. This anchor may be of any type and may have the same length as the frame.

A bonding cloth 23 is bonded above the lower frame 25 along its length.

Grommets 24 serving as joining means are attached near the upper end of the joining cloth 23 at intervals of 25 cm.

The lower end of the rope-like core 11 of the silt supplementing member 10 is passed through the eyelet 24 and tied and connected, so that the lower frame 25 and the silt supplementing member 10 are connected.

Further, another embodiment of the present invention will be described.

Now, as shown in FIG. 5, between the upper frame 21 and the lower frame 25, the silt supplementing member 10 and the membrane body 27 made of conventional synthetic fiber cloth are arranged alternately at predetermined intervals. It is stretched.

For example, the rope-shaped core 1 of the silt supplementary member 10
One of the silt supplementing members 10 is tied to the bonding cloth 23 above the lower frame 25 with an eyelet 24, and the rope-shaped core 11 of the other silt supplementing member 10 is attached to the upper frame 21.
A piece tied to the lower joint cloth 23 with an eyelet 24 is placed between the upper and lower frames 21 and 25.
Books are lined up and stretched out. Further, a membrane body 27 made of conventional synthetic fiber cloth with eyelets 24 attached at predetermined intervals near its upper and lower ends (approximately 5 m wide) is attached to the upper and lower frame bodies 27.
The silt supplementary member 10 is stretched adjacent to the silt supplementing member 10, which is juxtaposed and stretched between the silt supplementary members 1 and 25. This is the bonding fabric 2 of each of the upper and lower frames 21 and 25.
3 with a joint rope 28.

This allows for locations with strong water flow and high pressure on the membrane body, weak water flow and low pressure on the membrane body, and locations where silt is likely to occur or not. A membrane body can be stretched over the silt protector, making it even more effective in preventing damage to the silt protector and water pollution.

(Function) Next, the function of the silt protector configured as described above will be explained.

Now, silt protector 20 according to this invention
is arranged at a position as shown in FIG. 6, for example, in order to capture silt, earth and sand generated during underwater civil engineering work, etc.

First, as shown in FIG. 3, the lower end of the rope-like core 11 of the silt capturing member 10 is tied to the eyelet 24 attached to the joining cloth 23 above the lower frame 25 in which the anchor 26 is installed.

Next, the rope-shaped core portion 11 of the silt capturing member 10
An upper frame body 21 in which a float 22 is installed at the upper end of the
Eyelet 24 attached to the lower joining cloth 23
connect each other.

In this way, the upper and lower frames 21, 25
A large number of silt protectors 20 each having a silt capturing member 10 joined to the silt protecting member 10 are sequentially introduced into a predetermined input position from the lower frame 25, and a large number of silt capturing members 10 are installed to capture silt, earth and sand. A large number of silt capturing members 10 are arranged in a curtain-like manner and are stretched in a tensile state by means of floats and anchors installed inside each frame.

Thereafter, each silt protector 20 is connected by a connecting means (not shown) to surround the outer periphery of the underwater civil engineering work site.

Note that the rope-shaped core portion 11 of the silt capturing member 10
The upper frame body 21 and the lower frame body 25 may be joined using an adhesive.

Note that the loop-shaped fiber bundle of the tufted portion may be a filament yarn or a monofilament yarn.

(Effects of the Invention) As described in detail above, the silt protector of the present invention has a silt trapping member consisting of a rope-shaped core and a tufted part attached around the rope-shaped core, which is attached to an upper frame and a lower frame. Even if sudden water pressure is applied to the membrane, each silt trap stretched between the upper and lower frames of the silt protector By allowing the water flow to pass between the members, damage to the silt protector can be prevented. Furthermore, since silt, earth and sand are reliably captured by the tufted portions, ocean water pollution can be prevented.

Further, since the loop-shaped fiber bundle of the tufted portion is twisted in a spiral, the trapping area of silt, earth and sand, etc. in the tufted portion is increased, thereby further increasing the trapping ability of the tufted portion. In addition, when the loop-shaped fiber bundle of the tufted portion is a staple yarn, the fiber bundle made by twisting the staples may be contaminated with silt, dirt, etc., especially small particles, on the staple itself or between each staple. It is possible to capture particles, increase the capturing force of the silt capturing member, and expand the capture range so that particles from small to large can be captured without exception.

[Brief explanation of drawings]

Figure 1 is a front view showing an embodiment of the invention, Figure 2 is a front view showing an embodiment of the invention.
The figure is a cross-sectional view taken along line A-A' in Figure 1.
FIG. 3 is a partially cutaway perspective view of a silt protector according to the present invention, FIG. 4 is a side sectional view of the silt protector according to the present invention, and FIG. 5 is an illustration showing another embodiment of the silt protector according to the present invention. FIG. 6 is a partially cutaway perspective view, FIG. 6 is a plan view showing the state in which the silt protector according to the present invention is used, and FIG. 7 is a front view showing the entire conventional silt protector. Explanation of symbols, 10... Silt capturing member, 11...
...Loop-shaped core portion, 12...Tuft-like portion, 15...Loop-shaped fiber bundle, 21...Upper frame, 20...Silt protector, 25...Lower frame.

Claims (1)

[Scope of Claims] 1. A large number of silt trapping members each consisting of a rope-like core and a tuft-like part attached around the rope-like core are stretched side by side between an upper frame and a lower frame. A silt protector characterized by: 2. The silt protector according to claim 1, wherein the tufted portion is constructed by attaching a large number of looped fiber bundles radially around a rope-like core. 3. The silt protector according to claim 2, wherein the loop-shaped fiber bundle is twisted spirally. 4. The silt protector according to claim 2 or 3, wherein the loop-shaped fiber bundle is composed of staple yarn.