JP4866032B2 - Tree planting structure - Google Patents

Description

The present invention also relates to the greening structure.

  In recent years, the trend of urban greening has increased due to the enforcement of the Landscape Midori Three Law. However, there are few vacant areas in the urban area, and it is very difficult to secure a spacious green space in the site in a dense residential area. As a result, the building and its surroundings have attracted attention as greening places.

  Conventionally, in order to form a green space on the rooftop of a building or the like, it has been common to spread the soil on one side and sow plant seeds or paste grass on the soil. However, the rooftop of the building is not large, and it was difficult to form a large green area. Here, in order to secure a large green area in a narrow place, it is conceivable to form a green ground on an inclined slope surface.

  As a greening structure of the gradient surface, for example, there is one as shown in Patent Document 1. Such a greening structure is obtained by integrating a fertilizer, a water retention agent, artificial soil 52, and the like on a plate-like substrate 51 (see FIG. 5) made of a natural fiber non-woven fabric, etc., and covering the surface with a skin 53 made of a natural fiber woven fabric. The vegetation mat 54 is laid on a concrete slope, and a wire net (not shown) is stretched over the vegetation mat 54, and a soil (not shown) is sprayed thereon to grow a plant (not shown). It was like that.

According to the said greening structure, even if the slope surface which should be greened is a soilless slope, such as a concrete surface, the vegetation base required for growth of a plant can be ensured.
Japanese Patent Laid-Open No. 10-338934 (FIG. 2)

  However, the conventional greening structure described above has the following problems.

  In the above-mentioned general greening structure, for example, when greening a steep slope surface having a slope angle exceeding 45 degrees, the soil is shifted downward and the workability is poor. In addition, when irrigation piping is provided and automatic irrigation is performed regardless of the slope or plane, uniform water supply cannot be performed, and many water supply discharge ports are required. Furthermore, on the slope surface, the soil flows every time water is supplied, and the soil gradually becomes thin, which adversely affects the growth of plants.

  On the other hand, the greening structure described in Patent Document 1 has a problem that although it can be greened even on a slope surface, it takes a lot of labor and time to manufacture the vegetation mat, and it is difficult to carry because it is in the form of a mat. Also, during construction, when the worker got on the vegetation mat, it deformed and had to be repaired, and the workability was poor. This problem occurs regardless of the slope or horizontal plane.

The present invention was devised to solve the above problems, capable of holding an environment to grow good plants, can uniform water supply, and workability is good greening structure It is an issue to provide.

The invention according to claim 1 for solving the above-mentioned problem is a greening structure in which a greening construction surface to be greened is covered with a plant and is greened. The greening construction surface is an inclined slope surface, and is formed of a nonwoven fabric. A plurality of base bags formed by stuffing artificial soil into the cylindrical sandbags thus formed are arranged in parallel so that the longitudinal direction thereof is along the inclination direction of the slope surface, and the base bag provided on the greening construction surface A plurality of base bags are locked by biting into the bottom surfaces of the plurality of base bags by slipping bars that extend in a direction perpendicular to the longitudinal direction of the base bags, and the base bags are placed on the base bags arranged in parallel. An irrigation pipe extending in a direction orthogonal to the longitudinal direction of the bag is provided, and a vegetation is laid on a plurality of the base bags arranged in parallel.

According to the above configuration, since the base bag in which the artificial soil is packed in the cylindrical sandbag is used, the environment in which the plant grows well without draining the soil can be maintained, and the supplied water is non-woven fabric. Since it spreads along the water, it can supply water uniformly over the entire green surface. Furthermore, the base bag can be easily formed by simply filling artificial soil into a sandbag, and can be freely bent and easily transported, so that the workability is improved. Moreover, since the water supplied from the irrigation pipe extending in the direction orthogonal to the base bag spreads in the longitudinal direction of the base bag, the water can be uniformly supplied to the entire greening surface. In addition, a large green space can be secured within the same site area, and the effect of preventing the base bag from shifting is more greatly exhibited on the slope surface than on the flat ground. Further, even if the base bag is stepped on at the time of construction, the base bag is not displaced even if the greening construction surface is an inclined surface.

The invention according to claim 2 is characterized in that the base bag is fixed by being wound around the misalignment bar by a linear member such as a wire.

  According to the said structure, a base | substrate bag can be fixed reliably and it can prevent reliably shifting | deviating from a predetermined position.

The invention according to claim 3 is characterized in that the non-woven fabric is composed of synthetic fibers such as polyester fibers and is formed of 3 to 5 denier long fibers.

  According to the above configuration, since the nonwoven fabric constituting the surface of the base bag is excellent in air permeability, water permeability and plant root permeability, moisture and nutrients necessary for the plant can be easily supplied to the artificial soil, It can be rooted quickly to promote growth.

The invention according to claim 4 is characterized in that the artificial soil has a wet specific gravity of 0.6 to 1.0, an organic content, PH (H ₂ O) 6.0 to 7.0, and a particle size of _{2 to 5} mm. It is characterized by being a light and lightweight artificial soil.

  According to the above configuration, since the artificial soil has a larger diameter than normal soil, it can prevent subsidence and deviation of the soil, and there is less movement of particles in the soil bag even when water is supplied, and a stable shape. Can be held.

The invention according to claim 5 is characterized in that the vegetation is a stick turf formed by cutting a turf previously grown in a field into a mat shape.
According to the above-described configuration, compared to the case where seeds are sown and germination is waited for, turf rooting is quicker and rootstock is fixed to the basement bag at an early stage. Stabilize.

The invention according to claim 6 is characterized in that the inclined surface is artificially formed by assembling a steel frame or wood.

  According to the said structure, even if it is a narrow flat site between buildings, such as an urban area, a slope surface can be ensured and a green area can be ensured large. Moreover, since the place to green can be selected arbitrarily, if the slope surface is formed outside the window or the like and greened, the indoor landscape can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, while exhibiting the green space environment where a plant grows well, the outstanding effect that a uniform water supply can be performed to the whole greening surface is exhibited.

  Next, the best mode for carrying out the present invention will be described in detail with reference to the accompanying drawings.

  1 is a cross-sectional perspective view showing the best mode for carrying out the greening structure according to the present invention, FIG. 2 is a cross-sectional view showing the best mode for carrying out the greening structure according to the present invention, and FIG. The perspective view which showed the base bag of the tree planting structure which concerns on this invention, FIG. 4 is process explanatory drawing for demonstrating the construction method of the tree planting structure which concerns on this invention. In the present embodiment, an example in which a green space is formed on a slope surface will be described as an example. First, the configuration of the greening structure according to the present embodiment will be described.

  As shown in FIGS. 1 and 2, the greening structure 1 according to the present embodiment is a structure in which a planting surface 2 to be greened is covered with a plant 3 and greened. The greening construction surface 2 is composed of a slope surface 4.

  Such a greening structure 1 is that a plurality of base bags 14 (see FIG. 3) formed by stuffing artificial soil 18 into a cylindrical sandbag 17 formed of a nonwoven fabric 16 are arranged in parallel on the greening construction surface 2. It is a feature. In particular, in the case where the greening construction surface 2 is the slope surface 4 as in the present embodiment, the base bag 14 extends in the longitudinal direction along the slope direction of the slope surface 4 and is arranged in parallel. And

  The slope surface 4 is formed on the rooftop of the building or on the land between the buildings. The gradient surface 4 is artificially formed by assembling a steel frame 5 made of a lightweight steel frame such as a lip groove steel, for example. The steel frame 5 extends in the inclined direction and is disposed in the lateral direction with a predetermined interval, and extends in a direction (horizontal direction) perpendicular to the inclined member 5a, with a predetermined interval in the inclined direction. It is comprised with the horizontal member 5b arrange | positioned spaced apart. The inclined member 5a and the horizontal member 5b are connected to each other by welding or fastening members such as bolts and nuts. The steel frame 5 is subjected to rust prevention processing such as galvanization. Note that the steel frame 5 may be made of a lightweight material having rust prevention performance such as aluminum or stainless steel. Further, the type of the steel frame 5 is not limited to the lip groove type steel, but may be other shapes. Further, depending on the scale of the slope surface 4, a heavy steel frame may be used. Further, the slope surface 4 may be formed by assembling wood.

  A wire mesh 6 constructed by assembling wires in a lattice shape is laid on the surface of the steel frame 5. The wire mesh 6 has an eye size of about 100 mm. The wire mesh 6 is fixed to the steel frame 5 by welding or the like.

  On the surface of the wire mesh 6, a plastic square net 7 is laid. The square net 7 is formed by extrusion, and has a size of about 25 mm and a size smaller than that of the wire mesh 6. As shown in FIG. 2, the square mesh 7 is a hook-shaped fixing fitting 8, and the wire mesh 6 is integrally sandwiched between the wire mesh 6 and the linear portion of the square net 7 from the surface side. It is fixed to. The hook-shaped fixing bracket 8 has a rising plate portion 9 that protrudes to the surface side. The rising plate portion 9 extends upward in a direction orthogonal to the gradient surface 4. As shown in FIG. 1, the fixtures 8 are provided in a lattice shape at a predetermined pitch in the vertical and horizontal directions, and are arranged so as to form a plurality of rows at the same height when viewed in the tilt direction.

  A water permeable filter 11 is laid on the surface of the square net 7. The rising plate portion 9 of the fixture 8 passes through the water permeable filter 11 and protrudes upward. The water permeable filter 11 prevents the earth and sand of the vegetation 23 to be described later from falling to the back side of the gradient surface 4. The water permeable filter 11 is laid in one or more stages up and down depending on the length of the inclined surface 4 in the inclination direction. In the present embodiment, the water permeable filter 11 is laid in two upper and lower stages. In this case, the lower end portion of the upper permeable filter 11 is disposed so as to cover the upper end portion of the lower permeable filter 11. Yes.

  On the surface of the water permeable filter 11, a displacement stop bar 12 for preventing displacement on the inclined surface 4 of the base bag 14 is provided. The misalignment stop bar 12 is erected in a direction perpendicular to the sloped surface 4, bites into the bottom surface of the base bag 14 disposed thereon, and locks the base bag 14, so that the misalignment is stopped. To prevent. The shift stopper bar 12 is disposed so as to extend in a direction orthogonal to the inclination direction of the gradient surface 4 (a direction along the contour line of the gradient surface 4). That is, the misalignment stop bar 12 is disposed so as to extend in a direction orthogonal to the longitudinal direction of the base bag 14. The misalignment stop bar 12 is disposed so as to lock at least one base bag 14 that extends vertically and at the upper end side thereof. In the present embodiment, the misalignment stop bars 12 are provided at two locations near the upper end side and near the lower end side of the base bag 14 to enhance the locking performance of the base bag 14. The misalignment stop bar 12 is configured by a plate having a predetermined width, and spans between the rising plate portions 9 located at the same height among the rising plate portions 9 of the fixing bracket 8 penetrating the water permeable filter 11. Has been. The width (standing height) of the misalignment stop bar 12 is substantially half of the thickness of the base bag 14. The misalignment stop bar 12 is fixed to the rising plate portion 9 of the fixing bracket 8 by welding. The fixing of the misalignment bar 12 is not limited to welding, and bolts and screws may be used as long as the misalignment bar 12 has a fixing strength that does not separate from the fixing bracket 8 at the time of construction or after the greening structure 1 is completed. You may make it adhere | attach with an adhesive agent. The misalignment stop bar 12 also serves to fix the water permeable filter 11 by sandwiching the water permeable filter 11 with the fixing bracket 8.

  A base bag 14 is provided on the surfaces of the water permeable filter 11 and the displacement stopper bar 12. The base bag 14 is formed by packing artificial soil 18 in a cylindrical sandbag 17 formed of a nonwoven fabric 16. The base bag 14 is arranged extending vertically along the inclination direction of the slope surface 4. A plurality of base bags 14 are juxtaposed in the width direction of the gradient surface 4.

  The non-woven fabric 16 constituting the sandbag 17 that is an exterior material of the base bag 14 is made of synthetic fiber such as polyester fiber, and is formed by knitting 3-5 denier (3 or more and 5 or less) long fibers. . In the present embodiment, the nonwoven fabric 16 is formed by knitting 5 denier long fibers. The nonwoven fabric 16 having the above-described configuration has a fine mesh, and has excellent air permeability, water permeability, and plant root permeability. Further, since the mesh is finer than the particle size of the artificial soil 18 described later, the outflow of the artificial soil 18 from the soil bag 17 can be prevented. The configuration of the nonwoven fabric 16 is not limited to the above-described one, and other configurations may be used as long as they have equivalent air permeability, water permeability, plant root permeability, and fineness of eyes. Good.

The artificial soil 18 packed in the sandbag 17 has a wet specific gravity of 0.6 to 1.0 (0.6 or more and 1.0 or less) including an organic component, and PH (H ₂ O) of 6.0 to 7. 0.0 (6.0 to 7.0) and a wet porous lightweight artificial soil having a particle size of 2 mm to 5 mm (2 mm to 5 mm). In the present embodiment, artificial soil 18 having a wet specific gravity of 0.8 is used. The artificial soil 18 having the above-described configuration has a particle size larger than the mesh size of the nonwoven fabric 16 and does not flow out of the soil bag 17. In addition, the artificial soil 18 having the previous structure can maintain a moist state suitable for the growth of the plant 3.

  As shown in FIG. 3, the sandbag 17 has a cylindrical shape with an outer peripheral length of about 620 mm and a length of about 1500 mm. After closing one end of the sandbag 17 by tying it with a string or by folding and pinching it with a clip-shaped member, etc., the artificial soil 18 is densely packed from the open end of the other end, and the other end is closed. A bag 14 is formed. The length of the base bag 14 is determined according to the length of the inclined surface 4 in the inclination direction. Specifically, when the length of the inclined surface 4 in the inclination direction is 2500 mm, for example, the length of one base bag 14 is divided into 1500 mm and 1000 mm, or 1250 mm so that the length does not exceed 1500 mm. To do. The size of the base bag 14 is an example, and may be larger or smaller. However, considering the transportability and workability, the above dimensions are preferable because the size and weight are appropriate.

  The base bag 14 is arranged so as to spread in the width direction of the gradient surface 4, and thus has a rectangular cross section with a width of about 250 mm and a thickness of about 60 mm. Therefore, the surface of the arrayed base bag 14 is substantially planar.

  By the way, the installation position (attachment height with respect to the inclined surface 4) of the misalignment stop bar 12 is determined according to the length of the base bag 14, as shown in FIG. The misalignment stop bar 12 is disposed so as to lock the base bag 14 at least one place on the upper side in the inclination direction. In the present embodiment, each base bag 14 disposed above and below the slope surface 4 so as to lock the base bag 14 at two locations on the upper side and the lower side in the inclination direction with respect to one base bag 14. Displacement prevention bars 12 are arranged in two rows.

  As shown in FIGS. 1 and 2, the base bag 14 is fixed to the misalignment stop bar 12 via a fixing wire 15 (wire) that is a linear member attached to the misalignment stop bar 12. The fixed wire 15 is made of, for example, a stainless steel wire having a diameter of 2 mm. The fixing wire 15 is fixed by forming a through hole in the misalignment stop bar 12 and inserting the fixing wire 15 therethrough. The fixing wire 15 may be fixed by being wound around the misalignment bar 12. The fixed wire 15 integrally winds the plurality of base bags 14. In short, the base bag 14 is fixed to the misalignment stop bar 12 by the fixing wire 15, and the misalignment prevention performance of the base bag 14 by the misalignment stop bar 12 is improved.

  An irrigation pipe 19 is provided on the surface of the plurality of base bags 14 arranged. The irrigation pipe 19 is disposed so as to extend in a direction orthogonal to the longitudinal direction of the base bag 14. The irrigation pipe 19 is constituted by a resin pipe having corrosion resistance against soil or the like. In the irrigation pipe 19, water supply holes 21 are formed at a predetermined pitch so that water can be supplied to the plurality of base bags 14 arranged along the width direction of the gradient surface 4. The water supply hole 21 has a pressure adjusting function that allows water to flow in a drip manner (drip method) when the water pressure in the irrigation piping 19 exceeds a certain value. Can be made uniform without unevenness. The water supply holes 21 are formed, for example, at a pitch of 250 mm in accordance with the width of the arranged base bags 14. The water supply holes 21 may be formed at a pitch of 500 mm, which is the width of two of the arranged base bags 14, and the water supply holes 21 may be arranged between the adjacent base bags 14. This also supplies water to all the base bags 14. The irrigation pipe 19 is connected to an automatic water supply apparatus having a control timer that is operated by electricity, solar power, a battery, or the like, and is configured to supply water every predetermined time.

  The irrigation piping 19 is arranged so that water can be supplied at least at one position on the upper side in the inclination direction with respect to the base bag 14 arranged vertically. In the present embodiment, the irrigation pipes 19 are respectively provided at two locations near the upper side of the inclined direction and in the vicinity of the intermediate portion with respect to the upper base bag 14. That is, in this embodiment, since the base bags 14 are respectively arranged in the upper and lower directions in the inclination direction for each row, a total of four irrigation pipes 19 extend in the width direction of the inclination surface 4 in parallel. Will be. When the length of the base bag 14 is short, the number of irrigation pipes 19 may be reduced.

  The irrigation pipe 19 is fixed to the base bag 14 by a U-shaped fixing bracket 22 (see FIG. 2). The fixing bracket 22 is inserted into the base bag 14 so as to press the irrigation pipe 19 from the surface side of the base bag 14. The fixing fittings 22 are arranged at intervals such that the irrigation pipe 19 does not sag downward in the inclination direction.

  On the surfaces of the irrigation pipe 19 and the base bag 14, a vegetation 23, which is a plant 3 that covers the sloped surface 4 (greening surface 2), is laid. The vegetation 23 is configured by pasture turf 24 formed by cutting grass previously grown in a field into a mat shape. The pasting grass 24 has a rectangular shape and is arranged so as to extend in the width direction of the gradient surface 4. The pasting grass 24 is arranged in a staggered manner along the inclination direction of the slope surface 4 so that the joints of the connecting portions are not aligned. The pasting grass 24 is fixed to the base bag 14 by a U-shaped skewer 25. The mesh skewer 25 is inserted from the surface of the pasting grass 24 toward the base bag 14.

  Next, the operation will be described while explaining the construction method of the greening structure according to the present embodiment.

  As shown on the left side of FIG. 4A, first, the steel frame 5 is assembled on the rooftop of the building or the land between the buildings to form the gradient surface 4. The gradient surface 4 is formed by first assembling an inclined member 5a made of a lightweight steel frame, and then arranging a horizontal member 5b on the surface side, and fixing the horizontal member 5b to the inclined member 5a by fixing means such as welding or bolts and nuts. Is made up of. In addition, the material which forms the gradient surface 4 is not restricted to a lightweight steel frame, According to the intensity | strength of the building which has the scale of the gradient surface 4, the rooftop etc. which are formed, it selects suitably from a heavy steel frame or a timber.

  Next, as shown on the right side of FIG. 4A, a wire mesh 6 formed by assembling wires in a lattice shape is laid on the entire surface of the steel frame 5 and fixed to the steel frame 5 by welding or the like.

  Thereafter, as shown on the left side of FIG. 4B, a square net 7 is laid on the entire surface of the wire mesh 6. And the wire of the wire mesh 6 and the linear part of the square net 7 are sandwiched integrally with the hook-shaped fixture 8 having the rising plate part 9, and the square net 7 is attached to the wire mesh 6. Fix (see FIG. 2 for details).

  Next, as shown on the right side of FIG. 4B, a water permeable filter 11 is laid on the entire surface of the square net 7. At this time, the water permeable filter 11 is pressed against the fixture 8 so that the rising plate portion 9 penetrates the water permeable filter 11 so that the rising plate portion 9 protrudes upward from the water permeable filter 11 (see FIG. 2). ). The permeable filter 11 is laid from the lower side so that the lower end portion of the upper permeable filter 11 covers the upper end portion of the lower permeable filter 11 and is positioned on the surface side.

  Then, as shown in FIG.4 (c), the slip prevention bar 12 is provided in the surface of the water-permeable filter 11. As shown in FIG. The displacement prevention bar 12 is fixed by welding with a plate having a predetermined width spanned between the rising plate portions 9 located at the same height among the rising plate portions 9 of the fixing bracket 8 penetrating the water permeable filter 11. It is composed by doing. The misalignment stop bars 12 are formed at the upper and lower portions of the upper base bag 14 (see FIG. 4D) and the lower base bag 14, respectively. The fixing of the misalignment bar 12 is not limited to welding, and bolts and screws may be used as long as the misalignment bar 12 has a fixing strength that does not separate from the fixing bracket 8 at the time of construction or after the greening structure 1 is completed. You may make it adhere | attach with an adhesive agent. Then, a fixing wire 15 for attaching and fixing the base bag 14 in a later step is attached to the misalignment stop bar 12.

  Next, as shown in FIG. 4 (d), the base bag 14 formed by stuffing the artificial soil 18 into the cylindrical sandbag 17 formed of the nonwoven fabric 16 in advance is used as the water permeable filter 11 and the slip prevention bar 12. Lay on top.

  The base bag 14 is fixed in parallel sequentially from one end in the width direction on the upper side of the gradient surface 4. In the present embodiment, the base bags 14 are provided in two rows on the slope surface 4 in the upper and lower rows, so that the lower rows are arranged in parallel after the upper rows are sequentially arranged in advance. In laying each base bag 14, the upper end portion thereof is aligned with the upper end of the inclined surface 4, and is placed on the upper and lower displacement prevention bars 12 to be pressed and locked. The base bag 14 is sequentially laid next to the base bag 14 that has been laid. At this time, the fixing wire 15 attached to the misalignment stop bar 12 is drawn upward from the gap between the adjacent base bags 14. If the base bag 14 can be laid within a predetermined range, the fixing wire 15 is wound around the base bag 14 in units of several, and the base bag 14 is fixed to the misalignment stop bar 12. Since the fixed wire 15 is made of a stainless steel wire having a diameter of 2 mm, it can be easily folded and tied, and the base bag 14 can be easily wound. Moreover, even if the fixing wire 15 is embedded in the lower part of the vegetation 23, it does not corrode and can fix the base bag 14 for many years.

  When the fixing of the base bag 14 is completed, the surface of the base bag 14 arranged in parallel is subjected to point pressure (pressing each point on the surface). As a result, the base bag 14 is prevented from being displaced by the artificial soil 18 inside, and has a rectangular cross section (see FIG. 3) having a width of about 250 mm and a thickness of about 60 mm. However, it becomes substantially planar. At this time, although the base bag 14 is inclined, since the artificial soil 18 is densely packed in the sandbag 17, even if the base bag 14 is stepped on, the artificial soil 18 does not move downward, and the point pressure Easy to do.

  When the base bags 14 are laid in the lower row, the base bags 14 are arranged so as to be aligned with the lower ends of the base bags 14 laid in the upper row, and thereafter the base bags 14 are arranged. Work in the same way as laying and fixing. Therefore, the joining part of the upper and lower base bags 14 is also formed with substantially the same thickness, and the entire gradient surface 4 becomes flat.

  When the laying / fixing of the base bag 14 is completed, an irrigation pipe 19 is installed and fixed on the surface of the base bag 14 as shown in FIG. The irrigation pipes 19 are arranged in the direction perpendicular to the longitudinal direction of the base bag 14 at the upper end and the middle part of the upper base bag 14 and at the upper end and the intermediate part of the lower base bag 14, respectively. The irrigation pipe 19 is fixed by inserting the U-shaped fixing bracket 22 into the base bag 14 so as to push the irrigation pipe 19 from the surface side of the base bag 14.

  Then, as shown in FIG.4 (f), the vegetation 23 is laid on the surface of the irrigation piping 19 and the base bag 14 (both refer FIG.4 (e)). The vegetation body 23 uses a rectangular pasture grass 24 and is arranged so as to extend in the width direction of the gradient surface 4 and form a row. The irrigation pipes 19 are arranged in a staggered manner so that the joints of the connecting portions are not aligned when viewed in the inclined direction. Then, the mesh skewer 25 (partially illustrated in FIG. 4 (f)) is inserted into the base bag 14 from the surface of the sticking grass 24, and the sticking grass 24 is fixed to the base bag 14. By using the rectangular pasture as described above, the vegetation 23 is easily transported, and the laying operation and the fixing operation are very easy and efficient.

  When the laying of the vegetation 23 is completed, a stainless steel wire 26 for pressing the turf is spanned from the upper end to the lower end of the gradient surface 4. The stainless steel wires 26 are arranged at a predetermined pitch so that all the pasture grasses 24 can be pressed at least at one or more places. The stainless steel wire 26 is removed after a predetermined period of time has elapsed after the greening structure 1 is completed and the pasting grass 24 has taken root in the base bag 14.

  The tree planting structure 1 constructed by the above steps uses the base bag 14 in which the artificial soil 18 is packed in the cylindrical sandbag 17, so that the environment in which the plant 3 grows well without the soil flowing out. Can hold. Furthermore, since the supplied water permeates and spreads along the nonwoven fabric 16 constituting the sandbag 17, uniform water can be supplied to the entire gradient surface 4 (greening surface).

  Moreover, since the base bag 14 can be easily formed simply by stuffing the artificial soil 18 into the soil bag 14, it can also be manufactured at a construction site, such as a factory like a conventional vegetation mat 54 (see FIG. 5). Therefore, it is not necessary to manufacture using a dedicated machine, and the manufacturing cost can be reduced. Furthermore, since the base bag 14 can be freely curved, it can be easily transported, and even if the surface of the sloped surface 4 is not flat but curved, it can follow its planar shape. This can greatly improve the workability.

  In this Embodiment, since the to-be-greening construction surface 2 is the inclined surface 4 inclined, a wider green space can be ensured within the same site area. Furthermore, since the slope 5 is artificially formed by assembling the steel frame 5, a large green area can be secured even in a narrow site between buildings such as urban areas. Moreover, since the place to green can be selected arbitrarily, if the slope surface 4 is formed and greened out of the window etc., the scenery from the room can be made favorable. Furthermore, if the greening structure 1 is constructed on the roof of the building, direct sunlight on the roof surface can be prevented, and the air conditioning efficiency of the building (especially the top floor) can be increased.

  Since a plurality of the base bags 14 are arranged vertically in parallel along the inclination direction of the inclined surface 4, a force is applied in the longitudinal direction of the base bags 14 when an operator gets on the base bag 14 during construction. The base bag 14 has a sandbag 17 made of nonwoven fabric 16, and is not damaged or stretched by the weight of an operator. Further, the base bag 14 is locked by the misalignment stop bar 12 and is fixed to the misalignment stop bar 12 by a fixing wire 15. Therefore, even if an operator gets on the base bag 14, the base bag 14 is not displaced, the workability becomes very good, and the surface of the base bag 14 can be kept flat. Further, as described above, when the base bag 14 is laid on the sloped surface 4, the effect of preventing misalignment is exerted more than when the base bag 14 is provided on a simple horizontal surface.

  Furthermore, since the base bags 14 are juxtaposed in a state where the cross sections are made into a rectangular shape by applying pressure, the base bags 14 can be supported by the adjacent base bags 14, and the displacement of the inclined surface 4 in the width direction is prevented. And the effect of preventing deformation can also be obtained.

  Further, since the misalignment stop bars 12 are provided in a direction orthogonal to the longitudinal direction of the base bag 14 arranged along the tilt direction, all the base bags 14 are locked by a small number of misalignment bars 12. can do. The misalignment stop bar 12 is erected in the direction perpendicular to the inclined surface 4 and has a height that is approximately half the thickness of the base bag 14, so that it properly bites into the bottom surface of the base bag 14, The base bag 14 can be locked by friction with the nonwoven fabric 16.

  On the other hand, since the base bag 14 is formed by densely packing the artificial soil 18 in the sandbag 17, the artificial soil 18 does not shift downward even if it is arranged vertically along the inclination direction. In addition, since the misalignment stop bar 12 bites into the base bag 14 and also serves as a wall (weir), even if the amount of the artificial soil 18 is insufficiently packed, the artificial soil 18 is surely displaced downward. Can be prevented.

  Moreover, since the artificial soil 18 has a larger diameter than normal soil and a particle size larger than the mesh of the nonwoven fabric 16, the artificial soil 18 does not flow out of the base bag 14, and the plant 3 grows well. A possible environment can be maintained.

  Since the nonwoven fabric 16 has a high plant root permeability, the plant 3 is easily rooted, and the plant can be stabilized at an early stage even on the sloped surface 4. Since the roots of the vegetation 23 pass through the nonwoven fabric 16 and root in the artificial soil 18 inside, the vegetation 23 is securely fixed to the base bag 14. Furthermore, in the present embodiment, the vegetation 23 is pasted as a lawn 24, so that the root of the turf is quicker than when seeds are sown and waits for germination. 3 growth can be promoted. Therefore, since the rhizome is fixed to the base bag 14 at an early stage, the base bag 14 and the vegetation 23 arranged in an array are quickly stabilized.

  Since the irrigation pipe 19 is provided at least at the upper end of the base bag 14, the supplied water flows along the slope of the slope surface 4 and is supplied to the entire base bag 14. Moreover, the supplied water permeates the entire base bag 14 through the non-woven fabric 16 and can uniformly supply water to the entire green surface. Further, the base bag 14 can retain water for a certain period by allowing water to penetrate into the nonwoven fabric 16. Furthermore, not only the water necessary for the plant 3 but also the nutrients can be supplied via the irrigation pipe 19, and the growth of the plant 3 can be promoted.

  The artificial soil 18 according to the present embodiment does not collapse finely even when supplied with water, can maintain a predetermined particle size, and can maintain a stable state with little particle movement, so that it flows out of the soil bag 17. There is nothing. In addition, when the artificial soil 18 is supplied with water from the irrigation pipe 19, it can maintain an appropriate wet state, and can provide a favorable environment for the growth of the plant 3 together with the water retention of the nonwoven fabric 16.

  As mentioned above, although the form for implementing this invention was demonstrated, this invention is not limited to the said embodiment, In the range which does not deviate from the meaning of this invention, a design change is possible suitably. For example, in the present embodiment, the gradient surface 4 has a rectangular shape having a constant width from the upper end to the lower end, but the present invention can also be applied to trapezoidal gradient surfaces having different widths at the upper end and the lower end. Of course. In this case, the base bags are laid on the entire slope surface by changing the number of base bags parallel to the upper and lower portions of the slope surface.

It is the section perspective view showing the best form for carrying out the greening structure concerning the present invention. It is sectional drawing which showed the best form for implementing the greening structure which concerns on this invention. It is the perspective view which showed the basement bag of the greening structure which concerns on this invention. (A) is a first process explanatory diagram, (b) is a second process explanatory diagram, (c) is a third process explanatory diagram, and (d) is a fourth process for explaining a method for constructing a greening structure according to the present invention. Process explanatory drawing, (e) is 5th process explanatory drawing, (f) is 6th process explanatory drawing. It is the perspective view which showed the vegetation mat of the conventional greening structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tree planting structure 2 Tree planting construction surface 3 Plant 4 Gradient surface 5 Steel frame 12 Displacement stop bar 14 Base bag 15 Fixed wire (wire)
16 Nonwoven fabric 17 Dough bag 18 Artificial soil 19 Irrigation piping 23 Vegetation 24 Sticking grass

Claims (6)

In the tree planting structure where the planting surface to be planted is covered with plants and planted,
The greening construction surface is an inclined slope surface,
A plurality of base bags formed by stuffing artificial soil into a cylindrical sandbag formed of non-woven fabric are arranged in parallel so that the longitudinal direction is along the inclined direction of the gradient surface,
By biting into the bottom surfaces of the plurality of base bags, a plurality of base bags are locked by biting a slip-stop bar provided on the greening construction surface and extending in a direction perpendicular to the longitudinal direction of the base bags,
On the plurality of base bags arranged in parallel, irrigation piping extending in a direction perpendicular to the longitudinal direction of the base bags is provided,
A greening structure, wherein vegetation is laid on a plurality of the base bags arranged in parallel. The greening structure according to claim 1 , wherein the base bag is fixed by being wound around the misalignment bar by a linear member such as a wire. The greening structure according to claim 1 or 2 , wherein the nonwoven fabric is composed of synthetic fibers such as polyester fibers and is formed of 3 to 5 denier long fibers. The artificial soil is a wet porous lightweight artificial soil containing an organic component and having a wet specific gravity of 0.6 to 1.0, PH (H ₂ O) 6.0 to 7.0, and a particle size of _{2 to 5} mm. The greening structure according to any one of claims 1 to 3 , wherein the greening structure is characterized. The greening structure according to any one of claims 1 to 4 , wherein the vegetation is a sticking turf formed by cutting grass previously grown in a field into a mat shape. The slope surface is greening structure inclined surface according to any one of claims 1 to 5, characterized in that it is artificially formed by assembling steel or wood.

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