JP3434048B2 - Lakeshore greening block and lakeshore greening construction method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lakeshore greening block and a lakeshore greening construction method. More specifically, the present invention relates to an improvement of a block and a shore greening method for preventing sedimentation of sediment on a lake shore of a dam, that is, a water level fluctuation area of the shore, and for greening the lake shore.

[0002]

2. Description of the Related Art A dam water bank slope "water level fluctuation area" is often a strip-shaped bare land due to repeated submersion and exposure.
From the standpoint of the natural environment, greening measures must be taken, and from the standpoint of slope stability, measures against falling off caused by waves and wind are necessary.

Therefore, since about 1967, a method for selecting a suitable plant species and a method for promoting the survival have been studied. For example, “vegetation work” that introduces plants and “greening work” that improves the growth environment. And as one of the "vegetation works", there is one that uses planting, and some of them are also undergoing verification tests. The construction method of this demonstration test is a combination of planting and slope reinforcement, and it introduces plants with strong flood resistance to the slope to create an environment that prevents the invasion of native plants. . In relation to the maintenance of civil engineering structures for slope reinforcement, it is said that a combination of vegetation nets and slope nets has been adopted to prevent the outflow of sediment on slopes and has achieved a certain effect.

Further, there is known a technique of adopting concrete in which plants grow on the bank of a river or on the rocky surface of a steep slope, not on the shore of a dam lake (JP-A-53-72304). Further, as shown in FIG. 7, there is also known a technique in which a rocky surface of a steep slope is provided with a permeable concrete frame to green the steep slope (Act No. Sho 55-25813). The technique described in Japanese Utility Model Publication No. 55-25813 is used for greening the base 35, which cannot normally grow plants, such as a rock surface or bedrock after the surrounding frame 30 is rock mined.
The enclosure 30 includes a binder 32 such as cement mortar containing a small amount of water, a cement paste with a low cement ratio, or a small amount of sand on the surface of a coarse aggregate 31 of a required size.
The coarse aggregate 31 is connected through the binder 32, and a continuous void is left therebetween. Then, the soil 33 is put in the surrounding frame 30, and the seeds of the plant are sown or the seedlings are transplanted to the soil 33 to grow the plant 34. The surrounding frame 30 is fixed to the base 35 by a mortar 36.

[0005]

However, in the conventional greening countermeasures such as "vegetation work" such as planting, in addition to the problem of death due to submersion in water, prevention of falling off on a steep slope is insufficient. Moreover, strengthening the slope by using the vegetation net is not sufficient to deal with steep slopes. On the other hand, if a concrete structure, which is one of the "greening foundation works", is adopted to prevent the steep slope from falling off, it will not be greened and a problem will occur in the landscape.

Further, when concrete used for river bank protection and the like, on which the plants grow, is used on the slope of the dam lake shore, a problem of plant death due to submersion occurs. In addition, real public Sho 55-258
When the breathable concrete frame disclosed in No. 13 is used for the dam lake shore slope, in addition to the problem of plant death due to submersion in water, there is a problem that the pile cannot be stacked along the slope.

It is an object of the present invention to provide a lakeside greening block and a method for constructing a lakeside greening, which prevents the lakeside slope, particularly a steep slope of the lakeside slope from coming off and keeps the growth of plants under regular submerged conditions. To do.

[0008]

In order to achieve the above object, the invention of claim 1 has a concave shelf portion provided on the upper surface for forming a soil base for growing a plant having excellent flood resistance. , The cavities that store the make-up air to the soil base of this shelf, the air passage that guides the air in this cavity to the soil base of the shelf, and the overhangs that protrude to the front front are used as lakeside greening blocks. It is provided. Further, in the invention of claim 2, the entire block is formed of a breathable concrete material, and a portion connecting the cavity portion and the shelf portion is used as an air passage portion.

Further, the invention of claim 3 is such that a concave shelf portion provided on an upper surface for making a soil base, a cavity portion for storing make-up air to the soil foundation of the shelf portion, and a cavity portion of this cavity portion. A lakeside greening block having an air passage portion that guides air to the soil base of the shelf, an overhang portion that protrudes forward from the front, an engaging recessed portion provided on the upper surface, and an engaging protrusion provided on the lower surface. By fitting the engaging projections into the engaging recesses, they are piled up on the lake shore, and plants with excellent flood resistance are grown on the shelves.
Further, the invention of claim 4 is such that a concave shelf portion provided on the upper surface for forming a soil base, a cavity for storing supplementary air to the soil foundation of the shelf, and an air in this cavity are racked. Part leading to the soil foundation, an overhang part protruding forward from the front, an engaging recess provided on the upper surface, an engaging projection provided on the lower surface, and a lakeshore fitting projection provided on the back surface. A lakeshore greening block having and is stacked and fixed in a staggered manner on the lake shore by fitting the engaging ridges into the engaging recesses and inserting the lake shore fitting projections into the lake shore surface, and a plant with excellent flood resistance is attached to the shelf. Growing.

[0010]

Therefore, the soil base is formed on the concave shelf provided on the upper surface, and the seeds of the plant having excellent flood resistance are sown there. Then, during the slope exposure period, the block surface is covered with plants planted on the soil base and naturally occurring moss in the overhang portion to green the lakeshore slope. On the other hand, when submerged,
The air remaining in the cavity enters the soil base of this shelf through the air passage to supply air, helping the rhizomes, roots, and seeds of planting plants to survive. By forming the entire block with a breathable concrete material, the portion connecting the hollow portion and the shelf portion naturally becomes an air passage portion.

The lake shore greening block as described above is stacked on the lake shore surface by being fitted into the engaging recesses provided on the upper surface to prevent the lake shore slope from being stripped or eroded. Further, due to the presence of the overhang portion, a sufficient space can be provided even if the shelves are stacked, and a space for allowing the growth of plants with excellent flood resistance is generated. Moreover, since the lake shore fitting protrusions provided on the back surface are fitted into the lake shore and are stuck in a staggered manner on the lake shore, the lake shore greening block can be firmly fixed to the lake shore.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to the embodiments shown in the drawings.

1 to 3 show an embodiment of a lakeshore greening block and a lakeshore greening construction method according to the present invention. This lakeside greening block 10 has an upper surface 11 of the lakeside greening block 10 in order to form a soil base 4 for growing plants with excellent flood resistance.
Concave shelf 1 provided in and soil base 4 of this shelf 1
A cavity 2 for supplying air to the cavity 2 and the cavity 2
The air passage portion 5 that guides the air to the soil base 4 of the shelf portion 1 and the overhang portion 3 that protrudes toward the front of the lakeshore greening block 10 are provided. Furthermore, lakeside greening block 10
As shown in FIG. 2, the upper surface 11 is provided with an engaging recess 6, the lower surface 12 is provided with an engaging projection 7, and the rear surface 13 is provided with a lakeshore fitting projection 8. The lakeside greening block 10 is entirely made of a breathable concrete material.

Here, the shelf 1 is a recess having an inverted trapezoidal cross section, and is formed so as to be located above the overhang portion 3 protruding forward. Further, in this embodiment, the hollow portion 2 is provided on the lower surface 12 of the lakeshore greening block 10 and is a recess having an inverted trapezoidal cross section. The overhang portion 3 is an inclined surface that gradually protrudes forward from the lower surface 12 of the lakeside greening block 10 and connects to the upper surface 11. The presence of the overhang portion 3 protruding toward the front enables the formation of a wide soil base 4. The soil base 4 placed in the shelf 1 is a plant 9 having excellent flood resistance such as reed canary grass (Kusayoshi).
The soil should be sufficient to grow herbs and trees. Since the entire lakeside greening block 10 is formed of a breathable concrete material, the air passage portion 5 is formed of a concrete material that connects the shelf portion 1 and the cavity portion 2 without any special device or configuration. The opened portion corresponds to the air passage portion 5. In addition, the engagement concave portion 6 is the lakeside greening block 10
It is provided in the rear of the upper surface 11 of the so as to be parallel to the shelf 1 and to form a recess having an inverted trapezoidal cross section. The engagement protrusion 7 is provided behind the lower surface 12 of the lakeside greening block 10 so that the center of the front face is divided and the side cross section becomes a mountain-shaped protrusion. Further, the lakeshore fitting projection 8 is a conical projection, and is provided in the approximate center of the back surface 13 of the lakeshore greening block 10.

The lakeside greening block 1 constructed in this way
Fixing and stacking of No. 0 on the dam shore slope is performed as follows.

First, the slope of the dam lake shore 20 is set to the slope 21,
A step portion 22 following the inclined surface 21, an inclined surface 23 following the step portion 22, a step portion 24 following the inclined surface 23, and the step portion 2
The inclined surface 25 following 4 is formed in one or more steps. Then, the engaging projections 7 formed on the lower surface 12 of the lakeside greening block 10 are pierced into the step portions 22 and 24, and the lakeshore fitting projections 8 on the back surface 13 are fitted and fixed to the inclined surfaces 23 and 25. Next, other lakeside greening blocks 10 are stacked in a staggered manner on the upper surface 11 of the lakeside greening block 10 as shown in FIG. That is, the engaging recesses 6, 6 on the upper surfaces 11, 11 of the lakeshore greening blocks 10, 10 arranged side by side
Each of the engaging protrusions 7 divided into two is fitted in. In other words, the stacked lakeshore greening blocks 10 are configured to straddle the two lakeshore greening blocks 10 arranged side by side. Then, the stacking is continuously performed in a zigzag pattern in the lateral direction and the upward direction.
Here, for fixing the piled lakeside greening blocks 10, the engaging projections 7 formed on the lower surface 12 thereof are fitted into the engaging recesses 6 and 6, and the lakeshore fitting projections 8 on the back surface 13 are inclined to the inclined surfaces 23 and 25. It is done by inserting.

[0017] Usually, before fixing the lakeside greening block 10, the seedlings and seeds of the herbaceous and woody plants such as the reed canary grass (Kusayoshi), which are water-resistant, together with the soil base 4 on the shelf 1 are fixed. Can be inserted, but it does not have to be before fixing. Further, the number of steps of the lakeside greening block 10 fixed to each inclined surface 23, 25 may be any number as long as it is 1 or more, but in consideration of workability and fixing strength, it is 2-5.
Steps are preferred.

The dam lake shore slope thus constructed is a block surface of plants 9 planted on the soil base 4 and naturally occurring moss on the overhang portion 3 during the slope exposure period (drought period). Are covered and greened. On the other hand, at the time of submersion such as a full-season period, the air contained in the cavity 2 passes through the air passage portion 5 and enters the soil base 4 of the shelf 1 to supply air, and the rhizome of the planting plant 9 Helps roots and seeds survive. By forming the entire lakeshore greening block 10 with a breathable concrete material, the portion connecting the hollow portion 2 and the shelf portion 1 naturally becomes the air passage portion 5, and the air in the concrete material is the hollow portion. A sufficient amount of air can be added to the air of 2 to replenish the soil base 4. Further, by stacking the lakeside greening blocks 10 on the dam lake surface in this manner, it is possible to prevent the lakeside slope from being stripped or eroded.

Further, due to the existence of the overhang portion 3,
When the blocks are piled up, as shown in FIG. 2, it is possible to sufficiently provide the shelves 1 and to generate the spaces 26, ..., 26 that allow the growth of plants with excellent flood resistance. Further, the engaging projections 7 formed on the lower surface 12 of the lakeside greening block 10 are fitted into the step portions 22 and 24 of the lakeshore 10, and the lakeshore fitting projections 8 of the rear surface 13 are formed into the inclined surfaces 23 and 2.
Since the lakeside greening block 10 is fixed by being fitted into the lake 5, the lakeside greening block 10 does not peel off even when the lakeside greening block 10 is installed on a slope which is a steep slope of the dam lakeshore.

Next, a method of greening the dam lake shore slope by combining the lake shore greening construction method using the lake shore greening block 10 and another greening method will be described.

FIG. 4 shows an embodiment in which the lakeside greening construction method using the lakeside greening block 10 and another greening method are combined. In this example, a vine drooping greening method using a vegetation net 27 on the upper part of the lakeshore 20 is used.
The shore greening method using the shore greening block 10 at the bottom is adopted. This is usually because the lower part of the dam shore likely to flood over time of often This and及 beauty 1 year which is a steep slope, the shore greening block 10 from both sides of exfoliation prevention and air supply It is preferable to use the vines 28 on the vegetation net because the upper part of the dam lake shore often has a gentle slope, is unlikely to be submerged for a long period of one year, and looks more natural. This is a method that uses the hanging drooping greening method along the line 27. As a result, the dam shore slope can be greened efficiently and rationally.

On the upper part of the dam lake shore, in addition to this hanging drooping type greening method, other greening basic works, for example, a greening mat work for the purpose of covering the sloped surface soil and partial relaxation of the slope The desired net shelving or the like may be adopted, or vegetation, such as seeding or vegetation induction, may be adopted. As a plant on the shore of the dam lake, it is desirable that the plant has drought resistance in addition to flooding resistance because the drying period may be long.

As described above, by using the main lake shore greening block 10 in a place where the most severe conditions are used and adopting another known greening method in a place where the conditions are more lenient, the dam lake shore slope is efficiently used as a whole. It can be greened reasonably and rationally.

The above-described embodiments are examples of preferred embodiments of the present invention, but the present invention is not limited thereto and various modifications can be made without departing from the gist of the present invention. For example, the shelf 1 may be recessed so as to receive the soil base 4, and may have a circular shape or another shape when viewed from the top. Further, as shown in FIG. 5 and FIG. 6, the bottom of the soil base 4 is configured to be substantially horizontal at the time of installation so as to stabilize the soil, and further, as shown in FIG. May be cut to expand the plant growth space 26. Instead of providing the hollow portion 2 on the lower surface 12, a hollow portion may be provided near the central portion of the lakeshore greening block 10, or a member having a high air retention rate may be inserted to form the lakeshore greening block 10. Further, it is convenient in manufacturing that the air passage portion 5 is integrally formed by forming the entire block with a breathable concrete material as in this embodiment, but in addition to this, the cavity portion 2 and the shelf are also formed. The air passage portion 5 may be formed by forming only a portion connecting the portions 1 with a breathable concrete material and forming the other portions with a non-breathable member. Also,
As shown in FIG. 5, the space may be enlarged by making the upper surface of the cavity 2 substantially horizontal. Furthermore, the overhang part 3
So that its surface is easily covered with naturally occurring moss,
The surface may be rougher than the other surfaces. Further, the inclination of the overhang portion 3 (angle formed by the back surface 13 and the surface of the overhang portion 3) is preferably in the range of 5 to 45 degrees, but if it is in the range of 10 to 35 degrees, plant growth The space 26 can be made large to some extent, and the surface of the overhang portion 3 can be easily angled so that moss can be easily attached, which is more preferable.

The engaging recesses 6 are provided on the lakeshore greening block 1
It is not always necessary if 0 is not stacked. In the case of stacking, the engaging recesses 6 may be provided in a form of being divided into two right and left instead of being provided one by one in each lakeshore greening block 10. Further, the engaging projection 7 is not always necessary when the stacking is not performed. In the case of stacking, not only the lower surface 12, but also the side surface may be provided, and the connection strength may be increased by fitting the holes on the side surface of the adjacent lakeshore greening block 10. Furthermore, the lake shore fitting projection 8 is particularly effective when the blocks are stacked, but is not always necessary when the blocks are not stacked or when the blocks are fixed to the lake surface by other means. In addition,
Instead of the conical lakeshore fitting projection 8 provided in the center of the back surface 13 of the block, a plurality of projections, for example, three projections 8a, 8b, 8c may be provided dispersedly as shown in FIG.
As shown in FIG. 6, protrusions 8d and 8e that are elongated in the vertical and horizontal directions may be used. Further, it is advantageous to stack the lakeside greening blocks 10 in a zigzag shape in terms of the fixed strength, but it is not always necessary to form the zigzag shape.

The present invention is suitable for a dam lake shore, especially for a steep slope dam lake shore slope, but can also be applied to a gentle slope on the dam lake shore. Furthermore, it can be applied not only to dam lakes but also to general lakes and river banks.

[0027]

As is apparent from the above description, in the lakeshore greening block according to claim 1, even if it is submerged in water, it is possible to sufficiently replenish the air remaining in the cavity to the soil base created on the shelf, and It can help the rhizomes, roots and seeds of plants grow. In addition, the presence of the overhanging part protruding forward enables the formation of a wide soil base. As a result, sufficient greening can be maintained even during the slope exposure period.

In addition, in the lakeshore greening block of claim 2, since the entire block is formed of a breathable concrete material, the portion connecting the cavity and the shelf automatically becomes an air passage portion. Air is also retained in the concrete material, and at the time of flooding, air in the concrete material as well as air in the cavity can be used to help survival of rhizomes, roots, and seeds of planting plants.

Further, in the lakeshore greening method of claim 3,
Lake shore greening block The engaging ridges on the lower surface are inserted into the engaging recesses on the upper surface and piled up on the lake shore, and plants with excellent flood resistance are grown on the shelves. And it can be fully prevented from falling off.

Further, in the lakeshore greening method of claim 4,
By fitting the engaging projections into the engaging recesses and fitting the lakeshore fitting projections on the back of the lakeshore greening block to the lakeshore surface, the lakeshore greening blocks are stacked and fixed in a staggered manner on the lakeshore, and the shelves are water resistant. Since the excellent plants of No. 3 are grown, the lakeshore greening block is more firmly fixed to the lakeshore surface and looks good.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a lakeshore greening block of the present invention.

FIG. 2 is a lake shore cross-sectional view for explaining the method of fixing the lake shore greening block of the present invention.

FIG. 3 is a perspective view for explaining how to stack the lakeshore greening blocks of the present invention.

FIG. 4 is a lake shore perspective view showing an example in which the lake shore greening and building method of the present invention is combined with another greening method.

FIG. 5 is a view showing a second embodiment of the lakeshore greening block of the present invention, (A) is a sectional view, and (B) is a rear view.

FIG. 6 is a view showing a third embodiment of the lakeshore greening block of the present invention, (A) is a sectional view, and (B) is a rear view.

FIG. 7 is a diagram for explaining a conventional plant growing enclosure and an example of its use.

[Explanation of symbols]

1 shelf 2 cavity 3 Overhang part 4 soil base 5 Air passage section 6 Engagement recess 7 Engagement protrusion 8,8a, 8b, 8c, 8d, 8e Lakeshore fitting protrusion

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E02B 3/14 E02D 17/20 102 E02D 29/02 311

Claims (4)

(57) [Claims] 1. A concave shelf portion provided on an upper surface for forming a soil base on which a plant with excellent submergence resistance is grown, a cavity portion for storing make-up air to the soil base of the shelf portion, and A lakeshore greening block having an air passage portion for guiding the air in the hollow portion to the soil base of the shelf portion and an overhang portion protruding toward the front of the front. 2. The lakeshore greening block according to claim 1, wherein the entire block is formed of a breathable concrete material, and a portion connecting the hollow portion and the shelf portion is the air passage portion. 3. A concave shelf portion provided on an upper surface for forming a soil base, a cavity for storing supplementary air to the soil foundation of this shelf, and an air in this cavity for the soil foundation of the shelf. A lakeside greening block having an air passage portion leading to the front, an overhang portion protruding forward from the front, an engaging concave portion provided on the upper surface, and an engaging protrusion provided on the lower surface. A lakeshore greening construction method in which plants having excellent flood resistance are grown on the shelves by being inserted into the fitting recesses and piled up on the lakeshore. 4. A concave shelf provided on an upper surface for forming a soil base, a cavity for storing supplementary air to the soil base of the shelf, and an air in the cavity for the soil base of the shelf. A lakeshore having an air passage portion leading to the front, an overhang portion protruding forward from the front, an engaging recess provided on the upper surface, an engaging projection provided on the lower surface, and a lakeshore fitting projection provided on the rear surface. The greening block is stacked and fixed in a staggered manner on the lake shore by fitting the engagement projections into the engagement recesses and fitting the lake shore fitting projections into the lake shore surface, and a plant with excellent flood resistance on the shelf is provided. A method of constructing a lakeside greenery by growing it.