JP2764323B2 - Continuous laying equipment for drainage material - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for continuously laying a drainage material on a seabed or a lakebed or the like on which a vertical drain material such as a sandpile is constructed. .

[Prior Art] Conventionally, as a method of laying this kind of drainage material, a strip-shaped drainage material is continuously laid on a water bottom from a laying boat moving straight, and a weight material such as crushed stone is placed on the drainage material. A method for stably laying drainage by dropping has been developed.

On the other hand, the present inventors are constituted by a band-shaped drainage base material formed by alternately forming irregularities continuously, and a filter material surrounding the drainage base material and extending to both ends of the drainage base material,
By arranging a plurality of drainage materials side by side with the extending portions of adjacent filter materials being slightly overlapped with each other, the amount of expensive drainage material used can be minimized and economical efficiency can be improved. We developed a drainage material that can be expected to have a uniform drainage effect over the entire surface.

[Problems to be Solved by the Invention] However, with the above-described conventional laying method, it was impossible to lay the drainage material according to the development at the same time in a plurality of parallel lines.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to provide a plurality of drainage materials in a state where the extending portions of adjacent filter materials are slightly overlapped with each other. It is an object of the present invention to provide a method and an apparatus for continuously laying a drainage material on a water bottom.

[Means for Solving the Problems] A continuous bottom laying apparatus for drainage material according to the present invention includes a laying boat that goes straight on the water, and a plurality of winding drums that are arranged on the laying boat so as to be shifted from each other in the traveling direction. A casing disposed in such a manner that each of the belt-shaped drainage materials wound around the winding drum and drawn out is guided and guided to the bottom of the water, and is shifted from each other in the traveling direction. A shooter for dropping a weight member is provided along the rear side of the vehicle.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 and 3, reference numeral 1 denotes a purge as a laying ship, on which a gantry 2 is rotatably and slidably mounted. On the base 2, two winding drums 3,
3 'is installed, around which strip-shaped drainage materials D and D' are wound respectively.

As shown in FIG. 3, the drainage materials D and D ′ are composed of a drainage base material 4 and a filter material 5.

The drainage base material 4 is formed with a frusto-conical concavo-convex portion 4a alternately and continuously formed, so that spaces capable of freely passing water in all directions are formed on both side surfaces, and the whole is flexible. It has a characteristic. The shape of the uneven portion 4a is not limited to this, and any shape may be used as long as it forms a free water passage space. Further, a through hole may be formed in the top surface or the like of the uneven portion 4a as long as the structural strength is not impaired.

The material of the drainage substrate 4 is hard vinyl chloride,
Rigid thermoplastic synthetic resins such as polystyrene, polyethylene, polypropylene, nylon, polyester, and ABS are conceivable, but are not limited thereto.

The filter material 4 is configured by using a fiber yarn alone or in combination with any of woven fabric, knitted fabric and nonwoven fabric. As the fiber yarn, for example, natural fibers such as cotton, hemp, wool, metal,
Glass, carbon-based inorganic fiber, cellulose, protein-based regenerated fiber, polyamide, polyester, polyolefin, polyurethane, polystyrene, polyvinyl chloride, polyvinylidene chloride, polyacryl, polyvinyl alcohol-based synthetic fiber, etc. alone Or use them in combination. The woven fabric includes, for example, plain weave, twill weave, satin weave, and special weave.
There are warp knitting or special knitting, and as the nonwoven fabric, there are a spunbond method, a needle punch method, a papermaking method, and the like.
Further, the filter material 5 is treated with a surfactant to impart hydrophilicity, and has a high filtering function. As the surfactant, for example, an alkali salt of a higher fatty acid, a quaternary ammonium salt, a polyethylene glycol alkyl ether, a higher amine halide, an alkyl sulfonate or a sulfosuccinate ester salt is used.

The drainage substrate 4 is surrounded by the filter member 5, and the filter member 5 has extending portions 5 a extending on both ends of the drainage member 4. The filter material 5 may be stitched at the base 5a 'of the extension 5a or joined with an adhesive or the like. In this case, the flow of water from the extension portion 5a to the drainage base material 4 is not prevented.

Referring again to FIGS. 1 and 2, the winding drum 3 'is positioned with the winding drum 3 shifted rearward in the direction of movement of the barge 1 (arrow A).
Filter material 5 of drainage material D, D 'drawn out from 3'
Are slightly overlapped with each other.

These drainage materials D, D 'are respectively a pair of upper and lower rollers 6, 6'.
And is fed out from the winding drums 3, 3 'while being sandwiched between the rollers.

At the rear of the barge 1, casings 7, 7 'are suspended toward the water, and drainage materials D, D' sent out from the rollers 6, 6 'are inserted into the casings 7, 7', respectively. Guidance is provided to the water floor (sea floor). These casings 7, 7 'are also shifted in the front-rear direction.

Each of the casings 7, 7 'is formed in a double cylindrical shape, and can be adjusted so as to be able to expand and contract in the vertical direction, so that the lower end thereof can always be kept at a fixed distance (for example, 50 cm) from the water bottom. ing. As a method of maintaining the lower ends of the casings 7, 7 'at a fixed position from the water bottom, a water pressure (not shown) such as a water level (tide level) or the depth of water from the barge 1 in accordance with a height change of the water bottom ground surface or the like is used. To automatically adjust the expansion and contraction of the casing 7, 7 '
A grounding wheel (not shown) may be attached to the lower end of each of 7, 7 ', and may be elastically biased so that the grounding wheel is always in contact with the water surface.

The drainage materials D, D 'which are fed out from the lower ends of the casings 7, 7' are laid on the water bottom with their ends, that is, the ends of the filter material 5a overlapping each other as shown in the figure. (See FIG. 4) Shooters 8, 8 'are respectively provided along the backs of the casings 7, 7', and the lower ends thereof move up and down with the vertical movement of the lower ends of the casings 7, 7 '. It has a flexible structure that can expand and contract in the middle so that it can be performed.

At the upper end of the shooters 8, 8 ', charging hoppers 9, 9' are arranged, and the crushed stones G sent from the supply hopper 11 via the belt conveyors 10, 10 'are fed to the shooters 8, 8'.
It is designed to be put in.

Next, a method of laying drainage materials D and D 'on a predetermined water bottom by the laying device will be described.

First, the drainage materials D, D 'are set on the take-up drums 3, 3', the unreeling portions are sandwiched between the rollers 6, 6 ', and further inserted into the casings 7, 7'. The parts are pulled out from the lower ends of the casings 7, 7 'and the crushed stones G are loaded on the supply hopper 11 to complete the work preparation.

Next, drainage materials D, D 'are drawn out from the lower ends of the casings 7, 7' while operating the barge 1, and are laid on the water bottom surface with the ends of the filter materials 5a overlapping.

On the other hand, the crushed stones G discharged from the supply hopper 11 are sent backward by the belt conveyors 10, 10 ', and are put into the input hoppers 9, 9'.
From the lower end, and is discharged from the lower end of the drainage material D, D 'immediately after the laying, and stably presses the drainage material D, D' on the water bottom surface. Shooter 8, 8 '
If an opening / closing lid (not shown) is provided at the lower end of the slab, and it is opened and closed intermittently, the crushed stone G is dropped onto the drainage materials D and D 'at intervals. Further, the material is not limited to the crushed stone G and may be any weight material such as gravel, sand, steel slag, and the like.

As described above, according to the laying device of the present invention, although the relatively expensive drainage bases 4 are arranged at intervals,
Since the bottom surface of the water is entirely covered with the filter material 5, the water absorbed by the extending portion 5a of the filter material 5 moves toward the drainage base material 1 and is drained, so that the water is uniformly drained. And there is no danger of uneven settlement.

FIG. 5 shows another embodiment in which an auxiliary filter material 5 ′ having a relatively strong stiffness is surrounded around the drainage base material 4. It is effective when there is a risk of blocking.

FIG. 6 shows still another embodiment in which the drainage substrates 4 are covered with a filter material 5 in a state where they are arranged at two intervals. In this case, although the width of the drainage material is increased, the laying work efficiency is improved. In addition, the said drainage base material 4 is not limited to two lines, but may be a plurality of lines.

[Effects of the Invention] 1) By arranging a plurality of drainage materials in a state where the edges of adjacent drainage materials are slightly overlapped with each other, the amount of expensive drainage base material used can be suppressed as much as possible to reduce the cost. At the same time, a uniform drainage effect can be expected over the entire surface of the underwater ground.

2) Laying work can be performed reliably and efficiently.

3) By dropping the weight member on the laid drainage material, the drainage material can be stably laid.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the continuous drainage material laying apparatus of the present invention, FIG. 2 is a plan view of a main part thereof, FIG. 3 is a structural explanatory view of the drainage material, and FIG. 5 and 6 are cross-sectional views showing different embodiments of the drainage material. 1 ... barge, 2 ... stand, 3, 3 '... winding drum,
4 ... drainage substrate, 4a ... irregularities, 5 ... filter material,
5a ... extension part, 5a '... base part, 5' ... auxiliary filter material, 6, 6 '... roller, 7, 7' ... casing, 8, 8 '...
... Shooter, 9,9 '... Injection hopper, 10,10' ... Belt conveyor, 11 ... Supply hopper, A ... Barge traveling direction, D, D '... Drainage material, G ... Crushed stone.

Claims (2)

(57) [Claims] 1. A laying ship that goes straight on the water, a plurality of winding drums arranged on the laying ship in a state of being shifted from each other in the traveling direction, and belt-like windings wound around the winding drum and drawn out. An apparatus for continuously laying a drainage material on a water bottom, comprising: a casing that guides and guides the drainage material to a water bottom, and is arranged so as to be shifted from each other in a traveling direction. 2. The apparatus for continuously laying a drainage material on a water bottom according to claim 1, wherein a shooter for dropping a weight member is provided along the rear side of the casing.