JPH1038A - Tree protection equipment - Google Patents

Abstract

(57) [Abstract] [Problem] It is possible to prevent compaction of soil under a tree protection panel, to allow roots to extend laterally beyond a block supporting a tree protection panel, and to avoid pressure on the root and the like. Obtain a tree protection device that can secure a root growth area. SOLUTION: In a tree planting area, a block 1 for supporting a tree protection board is buried under a tree protection board 5 installed on the ground surface around the tree, and a root system of the tree planted by the block 1 is provided. To protect. The block 1 is provided with a central space portion 2 where trees are planted, and a wall portion formed around the peripheral portion so as to have a space 3 communicating with the radial direction from the central space portion 2 to the outside. Providing a support portion 4 made of a protrusion or the like,
A tree protection panel 5 is set on the bearing 4. A jig 8 for fixing a tree is provided at the bottom 6 of the block 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tree protection device for protecting a root system of a tree planted in a tree planting area such as a street tree.

[0002]

2. Description of the Related Art In an urban area, as typified by street trees, trees are planted in a pavement area by setting a planting area (tree circle) of about 1 m square and planting soil therein. It is known to lay a tree protection board as a cover on the ground surface of the planting area in order to prevent the soil from being compacted by treading pressure.

[0003] In order to prevent the soil for planting from being compacted, for example, the construction of the above-mentioned tree protection panel is carried out,
As disclosed in JP-A-19558, JP-A-1-66847, JP-B-4-8765, etc., concrete blocks and the like are arranged around the trunk of a tree and around the periphery of a planting area. In general, the tree protection board is placed and supported on the board. In this case, a foundation made of crushed stone or sand is provided below the concrete block or the like so that the ground supporting the tree protection panel does not sink or be distorted.

[0004]

In order for a planted tree to grow well, only the soil in the planting area has a small capacity, and as the tree grows, the roots extend laterally. For example, for a tree having a height of 5 m, a surface soil area of at least 5 m square is required.

However, in the above-described structure for supporting a tree protection panel using concrete blocks or the like, the planting area and the surrounding ground adjacent thereto are separated by the concrete block supporting the tree protection panel and its base. As a result, the roots cannot extend laterally, restricting the root area, impeding the growth of the root system, and damaging the roots due to the weight of the tree protection panel near the trunk-root boundary. As a result, there may be a problem that the tree withers or the tree shape is disturbed.

The present invention has been made in view of the above, and it is possible to prevent the soil from being compacted under a tree protection panel in a tree planting area, and to prevent the roots of a tree beyond a block supporting a tree protection panel. It is an object of the present invention to provide a tree protection device that can extend toward the root, avoid pressure on the root, and secure a growing area of the root system.

[0007]

According to the first aspect of the present invention, there is provided a tree planting block comprising a block for supporting a tree protection panel installed on a ground surface around a tree in a tree planting area. And a support portion having a space communicating from the central space portion to an outer portion is provided around the central space portion. Thus, a tree protection panel can be installed on the bearing in a state where trees are installed and planted in the central space.

According to a second aspect of the present invention, in a tree planting area, a support block is buried under a tree protection board installed on the ground surface around the tree, and a root system of the tree planted by the block is provided. A tree protection device for protecting the tree, wherein the block has a central space where trees are planted, and a bearing that has a space around the periphery that communicates with the outside from the central space to the outside. It is characterized in that a tree protection panel is installed on this bearing.

According to the above-described tree protection device, the tree protection panel is supported by the support portion of the support block buried under the tree protection plate, thereby preventing the soil in the planting area from being consolidated. Tree roots planted in the central space of
Since it is possible to extend outwardly from the central space through the space of the supporting portion at the periphery, restriction of the root area and compression of the root are avoided. As a result, a good root system growth area can be secured, and the root system of the plant can be sufficiently extended in the bearing block and then extended to the outer ground. Further, good ventilation and drainage can be maintained by the communication space.

[0010] In the above-mentioned tree protecting device, the support portion of the block may be a rising wall portion, a protrusion or the like from the bottom portion formed so as to have a space that is substantially radially continuous from the central space portion to the outer portion. Are preferred.

[0011] Thus, the root of the growing tree can easily and outwardly extend through the space of the bearing portion, and can extend substantially radially, and the existence of the block does not hinder the growth of the tree. In addition, it is also possible to easily fill at least a part of the space of the central space and the bearing with soil for cultivation, so that nutrients and moisture can be sufficiently removed from the soil filled in the space. Can be absorbed.

Further, in the above tree protection device,
As in claim 4, a jig for fixing a tree can be provided at the bottom of the block.

In this case, the tree set in the central space is fixed to the block using the jig,
The tree can be prevented from overturning due to wind or the like. In addition, trees can be transported and planted in a fixed state as described above.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a planting state by a tree protecting device according to one embodiment of the present invention. FIGS. 2 to 4 show supporting blocks (1) used for supporting a tree protecting board in the protecting device. ).

The bearing block (1) is made of a compression-resistant synthetic resin or the like, and has a rectangular parallelepiped shape of, for example, 1 m in width, 1 m in depth and 0.3 m in height. A support (4) having a space (3) communicating from the central space (2) to the outside is provided around the central space (2) in which is planted. A tree protection board (5) made of a metal grooved plate or the like made of cast iron or the like can be placed on the section (4).

As shown in FIGS. 2 to 4, a bearing (4) of the block (1) has a circumferential outer peripheral wall (4a) rising from a bottom (6) and a circumferential inner wall (4a). The radial walls (4b) arranged at substantially equal intervals form a large number of spaces (3) that open from the central space (2) to the outside in a substantially radially continuous manner on the side surfaces. Is preferably provided. That is, when the space (3) is substantially continuous in the radial direction, the roots of the planted tree (T) are easily extended outward. The outer peripheral wall (4a) and the wall (4
The arrangement interval of b) can be appropriately set in consideration of the pressure resistance, the space holding property, and the like.

As the bearing part (4), a central space part (2)
The space is not limited to the above-described embodiment as long as it can hold a space (3) communicating with the surrounding outer part from the outside and can support the tree protection board (5) with good stability. For example, the radial wall portion (4b) may have an intermittent projection, a rib-shaped reinforcing projection may be provided on the side surface of the wall portion (4b), or a columnar projection having a circular, square or irregular cross section. Can be implemented in various shapes and structures, for example, by disposing them in a scattered manner. FIG.
Shows another example of the block (1).

On the upper surface of the bottom portion (6) of the block (1), a rib-shaped convex portion having a slight height is formed so as to define a space (3) between adjacent walls (4b) (4b). (7) is provided so that moisture and nutrients can be retained on the bottom (6).
(6a) is a central opening for ventilation and water flow.
Roots extend downward from this opening (6a). For plants that prefer drainage, it is preferable to provide a plurality of openings at the bottom (6) so as to prevent water from staying.

At the bottom (6) of the block (1),
It is preferable to provide a jig (8) for fixing the tree (T) to be planted and installed in the central space (2) with a rope or the like.

Since the ground at the place where the block (1) is installed is generally uneven, if the bottom surface of the bottom (6) is a flat surface, the installed block (1) will It rattles and leans. In order to prevent this, it is preferable to provide a concave portion (9) such as a groove on the lower surface of the bottom portion (6) so as to be able to absorb irregularities at the installation location.

Various materials having the required strength and compression resistance can be used as the constituent material of the bearing block (1), but a relatively light and durable synthetic resin material, especially a polystyrene-based material, is used. A hard synthetic resin foam having closed cells and excellent compression resistance, such as a resin foam, is preferably used.
That is, the synthetic resin foam is lightweight, easy to handle such as being transported, and is easy to install. In addition, it is possible to prevent consolidation of the lower soil layer by installing blocks. In addition, the main root can penetrate, and the root grows without being damaged by the blocks. In the case of a synthetic resin foam, a high-density skin layer can be provided on the surface thereof as necessary.

When the material of the block (1) is a synthetic resin foam, as shown in FIG. 6, a reinforcing member (10) made of a rigid material such as metal or plastic is provided at an appropriate place such as the lower surface of the bottom (6). Is preferably provided to prevent bending deformation and breakage of the bottom portion (6). It is preferable that the jig (8) is fixed to the reinforcing member (10).

When planting a tree using the block (1), as shown in FIG. 1, the tree is planted in the central space (2) of the block (1) buried in the planting area. The root pot portion (13) of the tree (T) is installed and fixed to the block (1) by a rope or the like using the jig (8). Then, a nonwoven fabric (11) or the like which is permeable to water and whose roots can penetrate and grow is attached as a filter to the outer peripheral portion of the block (1) so that soil does not enter from the periphery, and the central space ( Fill 2) and space (3) with good quality planting soil (12).

Thus, the bearing (4) of the block (1)
A tree protection panel (5) made of cast iron or the like is installed on the outer peripheral wall (4a) or the wall (4b) of the above, and planted.

Under these conditions, the tree (T) has its roots first laid in the soil (12) in the central space (2) in the block (1) and through the space (3) The roots into the ground (14).

That is, since the block (1) supports the upper tree protection panel (5), the soil (12) is prevented from being compacted and the root is not compressed, and the root zone is guided into the adjacent ground. It becomes possible.

In the present embodiment, the root system of the tree (T) planted in the central space (2) is used for the planting filling in the central space (2) and the space (3). Soil (1
2) It absorbs more nutrients and water, and is firmly fixed to the block (1) by the tree fixing jig (8), so that it can grow well without falling due to wind or the like.

Further, by fixing the tree (T) to the block (1), the block (1) can be used for transportation to a predetermined planting place. At this time, on block (1),
Covering the split lid (15) shown in FIG. 7 which is substantially symmetrical with the block (1), protects the root pot portion of the tree being transported and improves the support stability. Then, in the planting place, the cover (15) is removed, the tree (T) is fixed to the block (1), and the tree (T) is set in the planting area, and the tree protection panel (5) is set thereon. Can be planted.

In the above embodiment, the case where the support block (1) is formed integrally is shown. However, when the use for transportation is not considered, the block (1) is replaced with the above-mentioned block (1). It is also possible to form it in a plurality of divided shapes such as the same as the lid (15).

[0031]

As described above, according to the tree protection device of the present invention, the tree protection panel can be supported by the blocks buried under the tree protection panel, and the soil in the planting area can be prevented from being compacted. The root area of the planted tree can be restricted and root compression can be avoided, and a good root growth area can be maintained.After the root system of the plant is sufficiently rooted in the space inside the block, The roots can be extended to the ground.

In particular, by forming the block space as in the third aspect of the present invention, the roots are easily guided outward and extend, and the roots are not rounded.
As a result, tree growth is improved.

[0033] Further, according to the invention as set forth in claim 4, it is possible to suppress the fall of the planted tree due to the wind and the like, and it is possible to use the block as a protective material when transporting the tree, and to use the planting area as it is. It can also be planted by burying it in a plant, and the efficiency of planting work can be improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway longitudinal sectional view showing a planting state by a protection device of the present invention.

FIG. 2 is a perspective view of a bearing block used as the protection device according to the first embodiment.

FIG. 3 is a plan view of the same block.

FIG. 4 is a front view of the same block.

FIG. 5 is a perspective view showing another example of the block.

FIG. 6 is a perspective view in which a block is turned upside down.

FIG. 7 is a perspective view of a bottom surface side where a block is turned upside down.

[Explanation of symbols]

 (1) Bearing block (2) Central space (3) Space (4) Bearing (5) Tree protection board (6) Bottom (7) Convex (8) Jig (9) Concave (10) Reinforcement Materials (11) Non-woven fabric (12) Cultivation soil

Claims (4)

[Claims] 1. A block for supporting a tree protection panel installed on a ground surface around a tree in a tree planting area,
A tree protection device comprising: a central space where trees are planted; and a support that has a space surrounding the central space to communicate with the outside from the central space. 2. In a tree planting area, a support block is buried under a tree protection board installed on the ground surface around the tree, and the tree protects the root system of the tree planted by the block. The device, wherein the block has a central space where trees are planted, and a bearing that holds a space communicating from the central space to an outer portion is provided around the central space. A tree protection device, wherein a tree protection panel is installed on the bearing. 3. The support portion of the block is formed of a rising wall from the bottom, a protrusion, or the like formed so as to have a space that communicates radially from the central space to the outside. The tree protection device according to claim 1 or 2, 4. A jig for fixing a tree to a bottom of the block is provided.
The tree protection device according to any one of claims 1 to 6.