JPS63210306A - Revetment for artificial pond and river - Google Patents

Abstract

PURPOSE:To eliminate a degradation in landscape by a method in which a plant-growing layer is provided near the water level of a water-proof sheet as a water stop layer for artificial pond, etc., and to prevent the exposure of the water-proof sheet. CONSTITUTION:A water-proof sheet 5 is laid on an artificially constructed revetment 1, and the upper end of the sheet 5 is fixed by stoppers 11. The lower end of a reticulate mat 7 is fixed to a position near low-water level 6 of the sheet 5, and the mat 7 is folded up to the direction of a top 3. Clay 8a and soil 8 are charged into the space between the sheet 5 and the mat 7 to form a plant-growing layer 9. Plant can grow on the vegetatable layer 9 to eliminate a degradation in the landscape caused by the exposure of the sheet 5.

Description

[Detailed description of the invention] Industrial applications The present invention relates to embankments for artificial ponds, rivers, etc.

Conventional technology Conventionally, artificially created embankments for ponds, rivers, etc. are covered with an impermeable layer made of concrete, waterproof sheets, etc. from the bottom to the slopes and even to the top. It is widely practiced to prevent the body from collapsing and to prevent water from flowing out.

However, since the water-blocking layer is made of materials such as synthetic resin waterproof sheets or waterproof concrete, plants cannot take root therein, and the water-blocking layer remains for many years after construction. It will remain as it is.

Therefore, parts of the bottom and slope of the impermeable layer that are submerged under water, as well as the top where embankment is possible, will be hidden, but the slope that is located above the lowest water level will be hidden. The water-blocking layer remains exposed in some parts, damaging the landscape.
This has been a particular problem in places where natural scenery is important, such as parks, gardens, golf courses, and tourist spots.

The present invention was made in order to solve these problems, and it is possible to prevent plants from taking root in the exposed part of the impermeable layer, making it look like a natural pond or river, without spoiling the landscape. The purpose is to provide embankments for artificial ponds, rivers, etc.

Means for Solving the Problems In order to solve the above problems, the present invention provides an embankment for artificial ponds, rivers, etc. that is at least above the low water level of the impermeable layer provided along the slope. It is characterized by having a layer along its surface that allows plants to take root.

Function Plants grow in the layer provided along the surface of the water-blocking layer where plants can take root, thereby hiding the water-blocking layer.

Example Next, embodiments of the present invention will be described based on the drawings.

1 to 4 show an embodiment of the present invention, in which an embankment body 1 of an artificial pond, river, etc. has a waterproof sheet 2 made of synthetic resin with a thickness of about 1.5 mm, for example, at the top 3, This waterproof sheet is laid over the slope 4 and the bottom, and forms a water-blocking layer 5.

Then, from the vicinity 6 of the low water level on the slope 4 of this impermeable layer 5 to a part of the crown 3 extending above it, a belt-like material having a thickness of, for example, 3 to 5 mm and a width of approximately 1 to 10 m is formed. A mesh-like pine door made of small holes made of plant fibers such as coconut fibers is formed in the dam body 1 with a layer of soil 8 about 10 cm thick sandwiched between them and the impermeable layer 5. The edges are arranged one on top of the other, thereby forming a layer 9 on which plants can take root.

In this embodiment, clay 8a is placed in the portion of the layer 9 that is constantly submerged in water to prevent soil from being washed away.

In this embodiment, a mesh door with small holes made of plant fibers such as coconut was used as the pine door, but a mesh door made of nonwoven fabric made of synthetic fibers may also be used. Furthermore, 10 is an embankment built up at the top 3, and 11 is a groove 1 that forms the top end of the waterproof sheet 2 at the top 3.
This is a fastener for fixing to 2.

Next, a method of constructing the water supply layer 5 and the rootable layer 9 having the above structure will be explained.

FIG. 3 shows an example of a method for constructing the embodiment shown in FIGS. 1 and 2. A waterproof sheet 2 is laid on the end 3, and the upper end of the waterproof sheet 2 is fastened and fixed with a stopper 11 to the bottom of a groove 12 formed on the top end 3 along the longitudinal direction of the embankment.

Next, the lower ends of a large number of pine doors are connected slightly below the low water level 6 of this waterproof sheet 2, and their edges are overlapped with each other in the longitudinal direction of the embankment body 1, and these are placed at the top. While folding in three directions, the bottom of the gap formed between the waterproof sheet 2 and the pine door is filled with clay 8a, and additional soil 8 is thrown in to a substantially uniform thickness. Next, the upper end of the pine door is attached to the waterproof sheet 2 fixed in the groove 12.
Earth and sand is poured into the ditch 12 and fixed to the top 3, thereby extending the impermeable layer 5 made of the waterproof sheet 2 from slightly below the low water level 6 of the slope 4 to a part of the top 3. Form a layer 9 on the surface where plants can take root, and finally fill the top 3 with embankment 1.
Cover with 0. If it is urgently necessary for the plants to take root and flourish, plant seedlings or sow seeds in additional soil 8 or pine doors. Alternatively, even if the plants do not take root artificially in this way, the plants may take root naturally, such as when seeds carried by the wind fly after construction, or when grass roots extend from the embankment 10 to the additional soil 8 and germinate. do.

In this construction method, the waterproof sheet 2 is first laid on the embankment body 1 to form the impermeable layer 5, and then the lower end of the pine door is connected below the low water level area 6 of the impermeable layer 5. The upper end of the waterproof sheet 2 was folded upward and additional soil 8 was put between them and fixed to the top 3 to form a layer 9 on which plants could take root, but before the top end of the waterproof sheet 2 was fixed to the top 3. It is also possible to connect the lower end of the pine door near the low water level 6, put soil 8 between them, overlap the waterproof sheet 2 and the upper end of the pine door, and fix them together to the top 3. .

4 and 5 show an example of a means for connecting the waterproof sheet 2 and the pine door in the vicinity of the low water level 6 of the impermeable layer 5, and a belt-shaped fixing member 14 is installed at the position of the waterproof sheet 2 where the pine door is connected. A steel rod 1 formed into an annular shape and fixed, having an appropriate length and coated with aluminum to provide corrosion resistance.
3 is inserted into the fixing member 14 with both ends thereof exposed, and an iron wire 15 and 15 coated with aluminum having an appropriate length is wound around both ends of the wire 15 and 15, and both ends of the wires are wound upward. Make it stand out.

Then, as shown in FIG. 5, a pine door is stacked on the surface of the waterproof sheet 2 by penetrating both ends of the iron wire 15.15, and a steel rod 16 similar to the steel rod 13 is placed on the surface of the pine door.
are placed one on top of the other, and both ends of the iron wires 15 and 15 are wound around and fastened to connect the waterproof sheet 2 and the pine door. According to this connecting means, the connecting operation is quick and the connection is ensured, but the connection is not limited thereto, and other connecting means may be used.

According to this embodiment configured in this way, the lower part of the slope 4 of the impermeable layer 5 formed by the waterproof sheet 2 on the embankment body 1 than the low water level vicinity 6 is always submerged in water, and the top part is always submerged in water. The part 3 is always hidden by the embankment 10, and furthermore, above the low water level 6 of the slope 4 where the impermeable layer 5 was conventionally exposed, and part of the crown 3, there is a layer where plants can take root. 9. Since plants will grow in a relatively short period of time, it will be hidden and give a natural landscape.

In particular, in this embodiment, the layer 9 on which plants can take root is formed of soil 8 and water-absorbing pinewood, which allows plants to take root easily. Plants grow well because they absorb and retain an appropriate amount of moisture and nutrients. Although this example shows the case where the hydrophobic layer 5 is formed of the waterproof sheet 2, if the water permeable layer 5 is formed of concrete, the lower end of the pine door may be directly fixed to the concrete slope. The upper end of the layer is folded upward and additional soil is poured between them to form a layer 9 on which plants can take root (not shown).

FIG. 6 shows another embodiment of the present invention, in which a pine door made of synthetic fiber non-woven fabric having a thickness of about 10 to 20 rra is attached to the surface of the water-blocking layer 5 formed by the waterproof sheet 2. These pine doors form a layer 9 on which plants can take root. Therefore, there is no additional soil 8, making construction simple and economical.

FIG. 7 shows a further different embodiment of the present invention,
In this embodiment, a water-blocking layer 5 is formed by providing a concrete layer 13 on the bottom, slope 4, and top 3 of the embankment body 1.

The water barrier layer 5 has a length approximately twice as long as the length from the vicinity of the low water level 6 of the slope 4 to the top 3, and has a thickness of about 10 am, for example, and is made of a nonwoven fabric made of synthetic fibers. A large number of pine doors are sequentially connected to each other at their side ends, folded back near the longitudinal center of the pine doors, and both ends are overlapped to form a bag, and the inside is filled with soil 8 to form a bag. A layer 9 on which plants can take root is formed in advance.

The layer 9 on which plants can take root is arranged along the longitudinal direction of the embankment body 1 so that the folded part 7a is located near the low water level part 6 of the slope 4 of the impermeable layer 5, and is overlapped. Both ends are fixed to the bottom of a groove 12 formed on the top end 3 by fasteners 11. Note that 8a is clay and 10 is embankment.

This embodiment is easier to construct and is particularly suitable when the launching layer 5 is made of concrete or the like.

Effects of the Invention Since the present invention is configured as described above, plants can take root on the impermeable layer provided on the slope of an artificial pond or river, hide the impermeable layer, and make it look like nature. Therefore, it does not spoil the scenery and is effective in places where scenery is valued, such as gardens, parks, and tourist spots.

[Brief explanation of the drawing]

Fig. 1 is a perspective cutaway diagram showing one embodiment of the present invention, Fig. 2 is a sectional view thereof, Fig. 3 is an explanatory diagram showing the construction method, and Fig. 4
5 and 5 are explanatory views showing an example of the means for connecting the waterproof sheet and the mat, and FIGS. 6 and 7 are perspective cutaway views showing other embodiments. 1... Embankment closed, 2... Tarpaulin sheet, 4... Slope, 5... Impermeable layer, 6... Near low water level, 9... Layer where plants can take root, 13... ...Concrete layer.

Claims (1)

[Claims] An embankment body for an artificial pond, river, etc., characterized in that a layer on which plants can take root is provided along the surface of an impermeable layer provided along a slope, at least above the vicinity of the low water level. .