JP4315230B2 - Erosion prevention vegetation material and its construction method - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a vegetation prevention vegetation material that prevents vegetation plants from being damaged by animals such as wild deer, and a construction method thereof.

  If a slope on a newly created land, a cut-through, or a mountain face on the side of a road is not protected at an early stage, a phenomenon of a collapse of the slope formed at a corner occurs. The protection of the slope is also for the purpose of preventing natural destruction and maintaining the landscape. In general, a method using plants, that is, so-called “vegetation” is performed.

  In recent years, vegetation on this slope has also been applied to slopes such as road slopes deep in the mountains and the surface of mountains for forest restoration. The food damage caused by is increasing. In other words, the phenomenon that wild deer devours the buds of vegetation plants that have been growing, making it impossible to produce sufficient vegetation.

  Therefore, as a countermeasure for preventing food damage caused by wild deer, as shown in Patent Documents 1 and 2, a first method using a “repellent” as shown in Patent Documents 1 and 2 and Patent Documents 3-6. A second method has been proposed in which the deer has a structure that prevents food damage.

  In the first method using the “repellent” as shown in Patent Documents 1 and 2, for example, as shown in the summary of Patent Document 1, “vegetation bag containing the vegetation base 2” 3 and configured so that the vegetation base 2 and / or the vegetation bag 3 has a repelling function. However, it seems that it is difficult to maintain this repelling function for a long period of time. This is because it is highly likely that the repellent will be washed away by the time the vegetation plants grow, or that the vegetation plants themselves will be neutralized.

  It was also considered to use “weeping grass”, “red pine”, or “wedge” that hate eating wild deer as vegetation plants, but these plants have a certain effect that they are less susceptible to damage. However, it has been postponed because it is not preferable to perform vegetation limited to these. In other words, if there is a limitation to the vegetation plant as described above, not only the landscape cannot be maintained, but also vegetation suitable for the region cannot be performed.

On the other hand, if it is a structural preventive measure as shown in Patent Documents 3 to 6, it can be considered that the anti-corrosion function can be exhibited for a long period of time, so that it may be good.
Japanese Unexamined Patent Publication No. 2007-20459, Abstract JP 2000-234337, abstract Japanese Patent Laid-Open No. 2003-34933, abstract, representative diagram JP 2006-45846 A, Summary JP 2006-109847 A, Abstract JP 2006-299544 A, Abstract

  As shown in FIG. 6, the “Method for preventing germination damage from wild animals in slope revegetation” in Patent Document 3 shows that “the top of the multi-mat material 4 is placed on the surface of the plant growth base layer 2 constructed on the slope 1. A method for preventing germination damage from wild animals in slope revegetation, characterized in that a synthetic multi-mat 3 is stretched by superimposing a raschel net 5 made of chemical fiber on the surface, and a wire mesh 6 is stretched on the surface of the multi-mat. However, as described in paragraph 0005 of the document, it is considered that “ungulates such as wild deer do not hate this wire net and do not approach”.

  However, in this Patent Document 3, as shown in FIG. 7, “a wire mesh is stretched on the surface of a multi-mat stretched on the surface of a growth base layer of a plant constructed on a slope”. It is thought that the buds of vegetation plants that have grown out of the multi-mat will immediately protrude from the wire mesh and be eaten by deer. In other words, it seems that this wire mesh is not protecting buds.

  Further, in Patent Document 4, as shown in FIG. 8, “it consists of a legal frame consisting of at least a horizontal frame, or a legal frame consisting of at least a vertical frame and a net attached to the surface of the legal frame”. As shown in FIG. 9 and FIG. 10, “the protective growth height h is taken between the slope mountain surface and the net”, and this protective growth height h is obtained by using thinned wood. This is the frame 2 or the vertical frame 7.

  However, the horizontal frame 2 or the vertical frame 7 using these thinned timbers is sufficient to secure the protective growth height h, but the horizontal frame 2 or the vertical frame 7 is a mountainous area. Carrying it to a steep slope (deer moves even at a tilt of nearly 70 degrees) is a difficult technique, and in places where wild deer appears, construction is almost impossible. is there.

  Further, in Patent Documents 5 and 6, as shown in FIG. 11 and FIG. 12, “Providing a device for preventing damage caused by herbivores that is easy to manage and can reliably prevent damage caused by deer, etc.” (Patent Document 5) and “A frame that prevents damage to shoots and vegetation caused by wild animals, and prevents the spread of slope topsoil and seeds by wind, so that seeds and vegetation can be firmly fixed, and the strength of the frame is increased. A technique has been proposed for the purpose of preventing green sand loss due to deformation and decomposition of the mold and ensuring greening "(Patent Document 6).

  And in this patent document 5, "it is the prevention apparatus D of the herbivore which covers the protection area 1 with the mesh body 2 and the mesh body 2 is floated from the protection area 1 through the spacer 3. In the technique of Patent Document 6, “The frame mold 1 defining a plurality of vegetation parts a on the slope A is formed by connecting a plurality of frame members 2. The frame member 2 is a log. 3, the base material filling hole 3B is drilled and the iron core 4 is inserted, and the base material filling hole 3B is filled with the vegetation base material 7. The frame material 2 is formed by connecting the iron core 4 to the annular connector. The frame mold 1 is constructed by connecting at 9 and an anchor is inserted into the annular connector 9 and driven into the slope A to be fixed to the slope A. The frame mold 1 is locked to the frame 2. Each of the vegetation parts a is covered with a covered wire mesh 10 ”, but all of the above patent documents 4, “Spacer 3” (Patent Document 5), or “Frame type 1 defining a plurality of vegetation parts a on the slope A, and log 3 with a base material filling hole 3 </ b> B. The construction of the frame material 2 ”(Patent Document 6) is difficult to construct, and construction is considered difficult in mountainous areas and steeply inclined surfaces.

  In particular, the use of “logs or unprocessed thinned wood” as shown in FIG. 10 or FIG. 12 as a means of maintaining the height of the net requires a large amount of means for fixing them. Thus, practical construction is considered almost impossible if it is a steeply inclined surface.

  Therefore, the present inventors have not only prevented the damage of animals represented by wild deer, but have also repeatedly studied how to make the construction easy even in mountainous areas and steep slopes. As a result, the present invention has been completed.

  That is, an object of the present invention is to provide a vegetation material that can be easily constructed even in a mountainous area or a steeply inclined surface, and a construction method thereof, with a simple configuration, as well as preventing vegetation damage from animals. There is to do.

In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the best mode described below.
“A vegetation zone 11 to be laid on the slope 20, a net body 12 that is partially attached to the surface side of the vegetation zone 11 to prevent vegetation plant P from being damaged by animals, and this net body 12. And a vegetation material 10 for preventing damage caused by a height holding member 13 inserted between the vegetation belt 11 and
Both edges of a predetermined width La portions of vegetation 11, with Keru Attach the edges of the predetermined width La is larger than enlarged width Lb portion of the mesh member 12, the height holding member 13, the enlarged width Lb of the mesh member 12 The horizontal member 13a that is in contact with the substantially central inner surface of the member and a support leg 13b that holds the horizontal member 13a on the vegetation belt 11,
The height holding member 13 inserted between the vegetation belt 11 and the mesh body 12 can form a protective space R having a triangular longitudinal section between the vegetation belt 11 and the mesh body 12. Eating damage prevention vegetation material 10 "
It is.

  That is, the food damage prevention vegetation material 10 according to claim 1 basically includes a vegetation zone 11, a net body 12, and a height holding member 13, and these vegetation zone 11 and the net body 12. 1, FIG. 3 (a) and FIG. 4, the protected space R of the vegetation plant P is actively formed by the height holding member 13, Due to the existence of the protection space R, as shown in FIG. 4 in particular, the vegetation plant P that has germinated and grew in the protection space R under the mesh body 12 is protected.

  As shown in FIG. 4, the vegetation plant P germinates or grows from the vegetation zone 11. If the growth of the vegetation plant P goes smoothly, the vegetation plant P protrudes upward from the mesh of the mesh body 12. However, not all of the vegetation plant P protrudes above the net body 12, but the “stem” directly above the root as well as the “root” in the vegetation zone 11 and the slope 20 is above the net body 12. It will be located in the covered protection space R. As a result, even if the part of the vegetation plant P protruding upward from the net body 12 is damaged by wild deer, bears, etc., as shown by the dotted line in the upper right part of FIG. “Roots” and “stems” are protected by the net body 12 and are not damaged by food.

  As a result of the above, even if the vegetation plant P suffers from damage as shown in the upper right example of FIG. 4, the vegetation plant P starts to grow again due to the remaining roots and stems, and the slope 20 becomes completely naked. There is no vegetation. Of course, as shown in the lower left of FIG. 4, if there is a vegetation plant P that is not affected at all by damage, the vegetation plant P grows from the mesh of the mesh body 12 and the necessary vegetation is completed. is there.

  Further, as described above, the net body 12 is in a state of floating on the protection space R due to the presence of the height holding member 13, and this also prevents the vegetation plant P from being damaged by food. This is because when this vegetation-preventing vegetation material 10 is constructed in many parts of the slope 20, there will be a large number of protected spaces R, but wild deer will enter the back. If this is the case, the net body 12 must naturally be stepped on. However, as described above, since there are a large number of protected spaces R under the net body 12, when the wild deer steps on each net body 12, it becomes "fluffy" and anxiety about the wild deer. Will give. In other words, the wild deer cannot walk on the net body 12 which is unstable due to the existence of the protected space R, and cannot eat the vegetation plant P growing in the back. is there.

  As described above, the protective space R can be formed under the mesh body 12 because the predetermined width La of the mesh body 12 is formed on both edges of the predetermined width La portion of the vegetation band 11 as shown in FIG. This is because both edges of the larger enlarged width Lb portion are attached, and the height holding member 13 is inserted between the vegetation belt 11 and the net body 12 as shown in FIGS. 1 and 2. That is, as shown in FIG. 3A, the height holding member 13 can form a protection space protection space R having a triangular longitudinal section between the vegetation zone 11 and the net body 12.

  In other words, as shown in FIG. 3B, by attaching both edges of the enlarged width Lb portion larger than the predetermined width La of the net body 12 to both edges of the predetermined width La portion of the vegetation band 11, these Between the vegetation zone 11 and the net body 12, there is a free part where the object can be inserted, that is, a place where the height holding member 13 can be inserted. The vegetation belt 11 and the net body 12 may be attached by using a stopper 15 such as a ring or wire as shown in FIG. 2, or as shown in FIG. 3 (a). The anchor 16 may be employed.

  The use of the stopper 15 is advantageous because the vegetation zone 11 and the net 12 can be fixed at the factory. On the other hand, when the anchor 16 is employed, the vegetation zone 11 is laid on the slope 20, the height holding members 13 are arranged at appropriate intervals, and the anchor 16 is driven between these height holding members 13. Therefore, it brings about the advantage that construction can be performed according to the situation of the site.

  The height holding member 13 may have a structure as shown in FIG. 2 or an inverted “T” shape as shown in FIG. However, we want to avoid “logs” that are unstable at least after construction.

  And the general thing can be employ | adopted about the vegetation zone 11, and the thing containing the fertilizer and the seed of the vegetation plant P may be used. In addition, the net body 12 may be a net formed of a synthetic resin as well as a so-called wire net, but if the mesh is about 1 to 5 square centimeters, it is advantageous because wild deer legs do not enter. is there.

  In the case where the vegetation damage prevention vegetation material 10 as described above is a vegetation damage prevention vegetation material 10 in which the height holding member 13 is removed in the case where the vegetation belt 11 and the net body 12 are first stopped by the stop material 15 at a predetermined interval. Is expanded on the slope 20 and fixed with an anchor 16 or the like, and a height holding member 13 may be inserted between the vegetation zone 11 and the net 12 to form each protection space R. Even if 20 is a steep slope, it can be done easily. Of course, the vegetation belt 11, the net body 12, and the height holding member 13 that are stopped by the stopper 15 may be manufactured and transported separately.

  On the other hand, in the case of the vegetation prevention vegetation material 10 in which the vegetation belt 11 and the net body 12 are not stopped by the stopper material 15, after the vegetation belt 11 is developed on the slope 20, the predetermined area on the vegetation belt 11 is The assembled height holding member 13 is arranged and fixed. Then, as shown in FIG. 3A, if the net body 12 is stopped by the anchor 16 in the vegetation zone 11, the construction is easily completed while the protective space R is formed by the height holding member 13.

Therefore, feeding damage prevention vegetation material 10 according to the first aspect, the first first feature, of course serve the vegetation of slopes 20, it is possible not only to prevent the feeding damage by an animal vegetation plant P, mountainous areas and sudden The construction can be easily performed even on an inclined surface.

Also, food deactivater vegetation material 1 0 according to the claim 1, each of the above heights holding member 1 3, and the horizontal member 13a abuts in a substantially central inner surface of the enlarged width Lb of the mesh member 12, the Ru Nodea constituted by a supporting leg 13b which holds the horizontal member 13a on the vegetation 11.

That is, in the erosion prevention vegetation material 10 according to claim 1 , as shown in FIG. 2 or 4 (b), the height holding member 13 is constituted by the horizontal material 13 a and the support legs 13 b. It is a thing. In this way, since the height holding member 13 itself may be assembled at the construction site, not only can the transportation be simplified, but also the support of the horizontal member 13a for lifting the mesh body 12 on the slope 20 is ensured. As a result, the construction of the food damage prevention vegetation material 10 itself can be easily performed.

  In particular, in this height holding member 13, since the support leg 13b itself can be firmly positioned on the vegetation zone 11, for example, a log that is easy to roll on a steep slope as shown in FIGS. 10 and 12 is adopted. Such an unstable construction can be avoided.

Thus, the feeding damage prevention vegetation material 10 of claim 1, as a second feature, it is possible to assumed easily construction height holding member 13 with a simple structure, formation of a protective space R can be performed reliably there because it is also of the.

And the food damage prevention vegetation material 10 comprised as mentioned above is like the invention which concerns on Claim 2 ,
“A construction method for constructing the vegetation material 10 for preventing damage to vegetation 10 on the slope 20 and including the following steps:
(1) A predetermined width La portion on the vegetation band 11 side of the net body 12 that prevents the vegetation plant P from being damaged by animals at both edges of the predetermined width La portion of the vegetation band 11 to be laid on the slope 20 Attaching both sides of the larger enlarged width Lb portion;
(2) A step of developing the vegetation belt 11 and the net body 12 attached to each other by the step (1) on the slope 20 so that the net body 12 is on the upper side;
(3) Between each predetermined width portion La of the net body 12 and the vegetation zone 11, a horizontal member 13a that abuts on the substantially central inner surface in the enlarged width Lb of the net body 12, and this horizontal material 13a on the vegetation zone 11 At least one height holding member 13 constituted by the support legs 13b held in the vertical direction is inserted, and a longitudinal section is provided between the height holding member 13 and the attachment portion of the net body 12 and the vegetation belt 11 Process for forming a protective space R having a triangular shape "
It is constructed on the slope 20 by.

That is, in the construction method of the vegetation prevention vegetation material 10 according to claim 2 , the vegetation plant P is formed on both edges of the predetermined width La portion of the vegetation zone 11 to be laid on the slope 20 in the step (1). The both sides of the enlarged width Lb portion larger than the predetermined width La portion on the vegetation band 11 side of the net body 12 for preventing the damage caused by the animals are attached. Since this erosion-preventing vegetation zone 10 stops the vegetation zone 11 and the net 12 at a predetermined interval, the anti-corrosion vegetation material 10 with the height retaining member 13 removed is deployed on the slope 20 and then the anchor 16 And a horizontal member 13a that is in contact with the inner surface of the center of the net 12 in the step (3) and a support leg 13b that holds the horizontal member 13a on the vegetation belt 11. is the holding member 13, to form the respective protective space R, may be Kome and difference between the vegetation zones 11 and netting 12, even if the construction slopes 20 was steep, performed easily. Of course, the vegetation belt 11, the net body 12, and the height holding member 13 that are stopped by the stopper 15 may be manufactured and transported separately. In particular, when this stopper 15 is employed, it is advantageous to fix the vegetation belt 11 and the net body 12 because pre-processing at the factory can be performed.

  Next, in the step (2), the vegetation zone 11 and the net body 12 attached to each other in the step (1) are developed on the slope 20 so that the net body 12 is on the upper side. In this step (2), when the vegetation prevention vegetation zone 10 is one in which the vegetation zone 11 and the net body 12 are stopped at a predetermined interval by the stopper 15, the upper edge of the erosion prevention vegetation zone 10 is fixed to the upper side of the slope 20. Then, if the other part is rolled down from the slope 20 with the mesh body 12 on the upper side, it can be easily developed.

  With respect to the height holding member 13, in the best mode, the horizontal member 13a, which is a single plate material, is inserted into and integrated with the insertion groove formed at the upper ends of the two support legs 13b, which are plate materials. Yes, it can be easily assembled at the construction site. Of course, before assembling, the horizontal members 13a and the support legs 13b are plate materials, so they can be kept flat, so that not only can the storage be easy, but even if the slope 20 is a steep slope, it can be placed on it. Carrying in is easy.

In the step (3), the height holding member 13 as described above is supported by the horizontal member 13a that is in contact with the substantially central inner surface within the enlarged width Lb of the mesh body 12, and the horizontal member 13a that is held on the vegetation belt 11. If it comprises the leg 13b and it inserts in the free space formed between the vegetation zone 11 and the net body 12, the protection space R will be formed under the net body 12. That is, the height holding member 13 can form a protection space protection space R having a triangular longitudinal section between the vegetation belt 11 and the net body 12.

As described above, in the invention according to claim 1,
“A vegetation zone 11 to be laid on the slope 20, a net body 12 that is partially attached to the surface side of the vegetation zone 11 to prevent vegetation plant P from being damaged by animals, and this net body 12. And a vegetation material 10 for preventing damage caused by a height holding member 13 inserted between the vegetation belt 11 and
Both edges of a predetermined width La portions of vegetation 11, with Keru Attach the edges of the predetermined width La is larger than enlarged width Lb portion of the mesh member 12, the height holding member 13, the enlarged width Lb of the mesh member 12 The horizontal member 13a that is in contact with the substantially central inner surface of the member and a support leg 13b that holds the horizontal member 13a on the vegetation belt 11,
The height holding member 13 inserted between the vegetation belt 11 and the net body 12 can form a protective space R having a triangular longitudinal section between the vegetation belt 11 and the net body 12 ”.
In addition to preventing the vegetation plant P from being damaged by animals, the vegetation prevention plant vegetation material 10 that can be easily installed even in mountainous areas or steep slopes is provided with a simple configuration. other Ru Nodea which can be, can be made easily applied by high holding member 13 a simple structure, since the formation of the protective space R can be provided feeding damage prevention vegetation material 10 can be reliably performed is there.

In the construction method according to claim 2 ,
“A construction method for constructing the vegetation material 10 for preventing damage to vegetation 10 on the slope 20 and including the following steps:
(1) A predetermined width La portion on the vegetation band 11 side of the net body 12 that prevents the vegetation plant P from being damaged by animals at both edges of the predetermined width La portion of the vegetation band 11 to be laid on the slope 20 Attaching both sides of the larger enlarged width Lb portion;
(2) A step of developing the vegetation belt 11 and the net body 12 attached to each other by the step (1) on the slope 20 so that the net body 12 is on the upper side;
(3) Between each predetermined width portion La of the net body 12 and the vegetation zone 11, a horizontal member 13a that abuts on the substantially central inner surface in the enlarged width Lb of the net body 12, and this horizontal material 13a on the vegetation zone 11 At least one height holding member 13 constituted by the support legs 13b held in the vertical direction is inserted, and a longitudinal section is provided between the height holding member 13 and the attachment portion of the net body 12 and the vegetation belt 11 Process for forming a protective space R having a triangular shape "
There are characteristic configuration on the Niso, thereby, it is possible to reliably perform construction of feeding damage prevention vegetation material 10 according to the first aspect.

In particular, in the construction method according to claim 2 , the vegetation damage preventing vegetation material 10 in which both edges of the enlarged width Lb portion larger than the predetermined width La of the net body 12 are attached to both edges of the predetermined width La portion of the vegetation band 11 is provided. The rolled vegetation-preventing vegetation material 10 is unrolled on the slope 20 as it is unfolded, and the construction can be completed simply by inserting the height holding member 13 between the vegetation zone 11 and the net body 12.

  Next, the invention according to each claim configured as described above will be described with respect to the food damage prevention vegetation material 10 which is the best mode shown in the drawings. Substantially all of the inventions according to the above paragraphs.

  FIG. 1 shows a partial perspective view of the food damage prevention vegetation material 10 viewed from the side after construction, and FIG. 2 shows a partial perspective view of the food damage prevention vegetation material 10 viewed from the valley side upward. The figure is shown. This vegetation prevention vegetation material 10 is a vegetation zone 11 to be laid on the slope 20 and a net that is partially attached to the surface side of the vegetation zone 11 and prevents vegetation plant P from being damaged by animals. 12.

  The vegetation zone 11 employed here is a net-like or mat-like shape using natural fibers, so to speak, it is made of a material that returns to the soil. Moreover, as shown with the dotted line in FIG.1 and FIG.2, several vegetation material bags 14 are attached to this vegetation belt 11 so that it may become horizontal after construction at predetermined intervals. In the material bag 14, fertilizer, soil improvement material, water retention material, etc. necessary for germination and growth of the vegetation plant P are stored.

  Of course, as this vegetation zone 11, a general thing can be employ | adopted and the seed of fertilizer and the vegetation plant P may be included or attached. Therefore, the vegetation material bag 14 is not necessarily required for carrying out the present invention.

  On the other hand, the net body 12 may be a net made of a synthetic resin as well as a so-called metal net, but in this best mode, a so-called metal net having a mesh (mesh size) of about 4 square centimeters is employed. A wire mesh of this size is advantageous because the wild deer's feet do not enter and are not easily broken even if they are stepped on.

  In the best form of the vegetation-preventing vegetation material 10, as shown in FIG. 3 (b), the mesh body 12 Both edges of the enlarged width Lb portion larger than the predetermined width La are attached. That is, the net body 12 constituting one piece of the vegetation material 10 for preventing damage is longer than the vegetation zone 11, and this is because, as shown in FIG. This is because a protection space R having a triangular longitudinal section can be formed between the vegetation zone 11 and the net body 12 by a height holding member 13 described later inserted between the vegetation zone 11 and the net body 12.

  That is, in the vegetation prevention vegetation material 10 of the present invention, as shown in FIG. By attaching both edges of the part, a free part in which an object can be inserted between the vegetation belt 11 and the net 12 is positively formed. The vegetation belt 11 and the net body 12 may be attached with a stopper 15 such as a ring or wire as shown in FIG. 2 or a so-called as shown in FIG. The anchor 16 may be driven into the inclined surface 20 while being hooked on a part of the mesh body 12.

  The use of the stopper 15 is advantageous because the vegetation zone 11 and the net 12 can be fixed at the factory. On the other hand, when the anchor 16 is employed, the vegetation zone 11 is laid on the slope 20, the height holding members 13 are arranged at appropriate intervals, and the anchor 16 is driven between these height holding members 13. Therefore, it brings about the advantage that construction can be performed according to the situation of the site.

  2 and 3, in the best mode shown in FIG. 2 and FIG. 3, a horizontal member 13a, which is a single plate material, is inserted into an insertion groove formed at the upper ends of two support legs 13b, which are plate materials. It is designed to be integrated by insertion, and can be easily assembled at the construction site. Of course, before assembling, the horizontal members 13a and the support legs 13b are plate materials, so they can be kept flat, so that not only can the storage be easy, but even if the slope 20 is a steep slope, it can be placed on it. It will be easy to bring in.

  Further, the height holding member 13 shown in FIG. 4 (b) has two plate members made of a horizontal member 13a, a support leg 13b, and a slope 20, and the horizontal member 13a is fixed to the support leg 13b with a nail or the like. The reverse “T” shape. In this case, the support leg 13b is placed flat on the vegetation zone 11, and the horizontal member 13a is erected on the flat support leg 13b. The body 12 is locked.

  If the height holding member 13 as described above is inserted into a free space formed between the vegetation belt 11 and the net body 12, a protective space R is formed under the net body 12 as shown in FIGS. It can be formed. That is, as shown in FIG. 3A, the height holding member 13 can form a protection space protection space R having a triangular longitudinal section between the vegetation zone 11 and the net body 12.

It is a fragmentary perspective view which shows the erosion prevention vegetation material which concerns on this invention after construction. It is a fragmentary perspective view which shows a mode when the food damage prevention vegetation material is looked up from the valley side. It shows the relationship between the vegetation zone constituting the food damage prevention vegetation material and the net body, (a) is a partial longitudinal section in a state of forming a protection space on the slope, (b) is a vegetation zone and It is a top view which shows the fixed relationship with a net. The height holding member which comprises the same erosion prevention vegetation material is demonstrated, (a) is the partial expansion which shows the positional relationship of the state with which the vegetation plant grew, and the height holding member which forms the protection space Sectional drawing, (b) is a side view showing a height holding member in a form different from that shown in (a). It is a partial top view of the erosion prevention vegetation material concerning this invention constructed on the slope. It is a perspective view which shows a prior art. FIG. 7 is a partial longitudinal sectional view of what is shown in FIG. 6. It is a fragmentary perspective view which shows other conventional techniques. It is a perspective view which shows other conventional techniques. FIG. 10 is a partially enlarged longitudinal sectional view of what is shown in FIG. 9. It shows another conventional technique, (a) is a partial perspective view, (b) is a longitudinal sectional view of (a). It is a partial expanded longitudinal cross-sectional view which shows another conventional technique.

DESCRIPTION OF SYMBOLS 10 Corrosion prevention vegetation material 11 Vegetation belt 12 Net body 13 Height holding member 13a Horizontal material 13b Support leg 14 Vegetation material bag 15 Stopping material 16 Anchor 20 Slope La Predetermined width Lb Expansion width P Vegetation plant R Protection space

Claims (2)

A vegetation zone to be laid on the slope, a net that is partially attached to the surface side of the vegetation zone to prevent vegetation from being damaged by animals, and between the net and the vegetation zone A vegetation material for preventing damage provided with a height retaining member inserted into
Both edges of the predetermined width portion of the vegetation, with Keru Attach the edges of the predetermined width is larger than enlarged width portion of said network element, wherein the height holding member substantially in the enlargement range of the network element Consists of a horizontal member that contacts the central inner surface, and a support leg that holds the horizontal member on the vegetation zone ,
A vegetation-preventing vegetation material characterized in that a protective space having a triangular longitudinal section can be formed between the vegetation zone and the net body by the height holding member inserted between the vegetation zone and the net body. A construction method for constructing the vegetation material for preventing damage according to claim 1 on a slope, comprising the following steps.
(1) An enlarged width larger than the predetermined width portion on the vegetation band side of the net body that prevents feeding damage by animals of vegetation plants on both edges of the predetermined width portion of the vegetation band to be laid on the slope. Attaching both edges of the part;
(2) A step of developing the vegetation zone and the net attached to each other by the step (1) on the slope such that the net is on the upper side;
(3) Between each predetermined width part of the mesh body and the vegetation zone, a horizontal material that is in contact with a substantially central inner surface within the enlarged width of the mesh body, and holding the horizontal material on the vegetation zone A protective space in which at least one height holding member configured by supporting legs is inserted, and the vertical cross-sectional shape is a triangle between the height holding member and the attachment portion of the net body and the vegetation belt. Forming.

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