Greening sandbag

Abstract

To provide a greening sandbag that can promote reliable greening on the sides of the bag body.SOLUTION: A greening sandbag 1 includes a bottomed, cylindrical bag body 2 into which soil and sand are introduced, and a vegetation sheet 3 that is placed inside the bag body 2, a connecting body 4 that is connected to the upper side of the bag body 2 has a cylindrical shape continuing from the bag body 2 and can be folded back to the outside of the bag body 2, and the vegetation sheet 3 is fixed to the connecting body 4. The vegetation sheet 3 is fixed at a position proceeding from the lower end of the connecting body 4 toward an opening edge portion 14 at the upper end.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a greening sandbag that can be used, for example, to form an earth retaining wall or earthwork on a slope, and that can promote greening after construction. [Background technology]

[0002] Natural disasters such as landslides are increasing these days, and sometimes slopes collapse. In such cases, green sandbags can be used to prevent the collapse from spreading or as a form of emergency protection to prevent the collapse from occurring in the first place.

[0003] As a conventional greening sandbag, Patent Document 1 discloses a greening sandbag in which a vegetation sheet is arranged along the inside surface of the bag body into which soil and sand are poured. This greening sandbag makes it possible to form earthworks and the like by pouring soil and sand into it, and also promotes greening with the vegetation sheet, which in turn improves the scenery. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6625327 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the above-mentioned conventional greening sandbags, the vegetation sheet is fixed to the bag body, and when soil is poured into the bag body, the vegetation sheet comes into contact with the soil and is pulled toward the bottom of the bag body, which may cause it to fall off.If the vegetation sheet falls off and is no longer present on the inside of the side of the bag body, reliable greening cannot be promoted.

[0006] The present invention has been made with the above in mind, and its object is to provide a greening sandbag that can promote reliable greening on the sides of the bag body. [Means for solving the problem]

[0007] In order to achieve the above-mentioned objective, the greening sandbag of the present invention comprises a bottomed, cylindrical bag body into which soil and sand are poured, and a vegetation sheet placed inside the bag body, and a connecting body connected to the upper side of the bag body has a cylindrical shape that is continuous with the bag body and can be folded over to the outside of the bag body, and the vegetation sheet is fixed to the connecting body (Claim 1).

[0008] In the above-mentioned greening sandbag, the vegetation sheet may be fixed at a position extending from the lower end of the connecting body toward the opening edge of the upper end (Claim 2), or the vegetation sheet may be fixed along the opening edge of the connecting body (Claim 3).

[0009] In the above-mentioned greening sandbag, the vegetation sheet may be arranged along at least approximately half the circumference of the connecting body (claim 4), or the vegetation sheet may be arranged along approximately the entire circumference of the connecting body (claim 5). Effect of the Invention

[0010] The present invention provides a greening sandbag that can promote reliable greening on the sides of the bag body.

[0011] In other words, in the greening sandbag of the present invention (the invention related to each claim of the present application), by folding the connecting body outward from the bag body, the connecting body is less likely to get in the way of the operation of pouring soil into the bag body, and by fixing the vegetation sheet to the connecting body that is folded outward, even if the part of the vegetation sheet located within the bag body comes into contact with soil when it is poured in (downward soil pressure) and is pulled toward the bottom of the bag body, the pulling force can be absorbed to a certain extent by the deformation of the connecting body, thereby preventing the vegetation sheet from falling off from the fixed part to the connecting body, and ultimately, it is possible to align the part of the vegetation sheet located within the bag body with the inside of the side of the bag body, promoting reliable greening of this side.

[0012] In addition, in the greening sandbag of the present invention, after soil is poured into the bag body, the connecting body that has been folded over on the outside of the bag body is returned to its original state (unfolded state) and its upper end (opening edge) is closed to complete the storage of the soil.At this time, if at least a part of the vegetation sheet is positioned on the top side of the bag body, it is also possible to promote greening of the top surface of the bag body.In this case, it is possible to green both the sides and top surface of the bag body with a single vegetation sheet, without having to prepare separate vegetation sheets for the sides and top of the bag body and install them separately.

[0013] In the greening sandbag of the invention of claim 2, the vegetation sheet is fixed at a position from the lower end of the connecting body toward the opening edge of the upper end of the connecting body (a position not less than halfway from the lower end of the connecting body to the opening edge of the upper end), and the portion (excess length) from the lower end of the connecting body to the fixing part where the vegetation sheet is fixed becomes a pulling allowance that allows the part of the vegetation sheet located inside the bag body to be pulled toward the bottom of the bag body when it comes into contact with soil and sand when it is loaded (downward soil pressure), and even if the vegetation sheet is pulled toward the bottom of the bag body within this pulling allowance, it is possible to achieve a state in which the vegetation sheet runs downward from the upper end of the inner side of the bag body, which promotes reliable greening of the sides of the bag body.

[0014] In the greening sandbag of the invention of claim 3, the vegetation sheet is fixed along the opening edge at the upper end of the connecting body, thereby maximizing the above-mentioned tensile allowance, and even if the vegetation sheet is dragged significantly toward the bottom of the bag body by the added soil and sand, the vegetation sheet is likely to be positioned on the top side of the bag body, which is therefore more effective in promoting greening of the top part of the bag body.

[0015] In the greening sandbag of the invention of claim 4, the vegetation sheet is aligned along at least approximately half the circumference of the connecting body, and by extending this vegetation sheet to the bag body side, it is possible to green at least approximately half the circumference of the side of the bag body and approximately half of the top surface.

[0016] In the greening sandbag of the invention according to claim 5, the vegetation sheet is arranged along the substantially entire circumference of the connecting body, and by extending this vegetation sheet to the bag body side, it is possible to green the substantially entire circumference of the side surface of the bag body and the substantially entire top surface. In addition, if the range of the fixing part of the vegetation sheet to the connecting body is only about half the circumference of the connecting body rather than the substantially entire circumference, when the bucket of a heavy machine such as a backhoe used to pour soil into the bag body contacts the vegetation sheet, or when the falling soil directly contacts the vegetation sheet, the stress is likely to concentrate on the fixing part, and the vegetation sheet is likely to fall off. Therefore, it is preferable to consider the direction in which the bag body is held when pouring soil so that the vegetation sheet is located on the opposite side of the heavy machine, but by arranging the vegetation sheet along the substantially entire circumference of the connecting body (extending the fixing part of the vegetation sheet to the connecting body to the substantially entire circumference of the connecting body), the above stress can be dispersed and the restriction on the direction in which the bag body is held when pouring soil can be eliminated. Furthermore, by placing a vegetation sheet around almost the entire circumference of the bag body, allowing vegetation to grow in all directions except for the bottom (bottom surface) of the bag body, there is no need to consider the direction in which the greening sandbag should be installed at the site after soil has been poured in, thereby increasing work efficiency. [Brief description of the drawings]

[0017] [Figure 1] 1A and 1B are a perspective view and a bottom view of a greening sandbag according to one embodiment of the present invention. [Diagram 2] FIG. 2A is an explanatory diagram showing a method for pouring soil into the greening sandbags, and FIG. 2B is a perspective view showing the state of the greening sandbags after soil has been poured into them. [Diagram 3] FIG. 2 is a vertical cross-sectional view of the greening sandbag. [Figure 4] 13A and 13B are perspective views showing the state of the greening sandbags immediately after installation and the state after some time has passed since installation. [Diagram 5] FIG. 11 is a perspective view of a modified example of the greening sandbag. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] An embodiment of the present invention will be described below.

[0019] The greening sandbag 1 shown in Figure 1(A) comprises a bottomed, cylindrical bag body 2 into which soil is poured (soil has not been poured in Figure 1(A)), and a vegetation sheet 3 that is placed inside this bag body 2. A connector 4 connected to the upper side of the bag body 2 has a cylindrical shape that is continuous with the bag body 2 and can be folded back to the outside of the bag body 2 (see Figures 2(A) and 3).

[0020] As shown in Figs. 1(A) and (B), the bag body 2 has a substantially circular bottom 5 and a substantially cylindrical side portion 6 rising from the outer periphery of the bottom 5, both of which have sufficient strength to hold soil and sand put into the bag body 2, and the side portion 6 allows plants to sprout. From this perspective, for example, it is conceivable that the bottom 5 is made of a high-strength synthetic resin cloth material such as flat yarn cloth (e.g., polypropylene cloth), and the side portion 6 is made of a net (bag net) made of synthetic resin fiber (e.g., polypropylene) that combines flexibility and strength. The bottom 5 and the side portion 6 can be integrated by an appropriate means such as sewing. In addition, as an example of dimensions, the bottom 5 is a substantially circular shape with a diameter of 1.1 m, and the height (vertical width) of the side portion 6 sewn to the outer periphery of the bottom 5 is 1.1 m.

[0021] When the side portion 6 is made of a net, the mesh size of the net is preferably 1 mm to 15 mm, and more preferably 3 mm to 8 mm. If the mesh size of the net is smaller than 3 mm or even 1 mm, it may be likely to hinder the germination of plants, and if the mesh size of the net is larger than 8 mm or even 15 mm, soil may be likely to leak (spill down).

[0022] 1(A) and (B), a hanging belt 7 is integrated with the outside of the bag body 2 by an appropriate means such as sewing. The hanging belt 7 in the illustrated example intersects at a right angle (cross shape) at the center of the lower surface (outer surface) of the bottom part 5, extends vertically (upward) from each of the positions that divide the circumference of the bottom part 5 into four equal parts along the outer surface of the side part 6, and adjacent parts are connected at the end of the extension, forming a pair of engaging parts (handles) 7a at opposing positions on the upper part of the bag body 2. The hanging belt 7 needs to have the strength to withstand the weight when used to lift the bag body 2 filled with soil and sand, and can be composed of a belt made of polypropylene fiber with a width of 100 mm, for example.

[0023] As shown in the enlarged partial view surrounded by a dotted line in Figure 1 (A), the vegetation sheet 3 comprises plant seeds 9 dispersed and held on one side of a base fabric 8, and a protective sheet 10 joined to the base fabric 8 by an appropriate means such as adhesion so as to cover the plant seeds 9 (sandwiching the plant seeds 9 between the base fabric 8), and is arranged so that the base fabric 8 faces the inner surface of the side portion 6.

[0024] This vegetation sheet 3 can hold the plant seeds 9 in a dispersed state on the inner surface of the bag body 2. In addition, because the plant seeds 9 are covered with the base fabric 8 and the protective sheet 10, the plant seeds 9 can be protected from impact with the soil and from falling off due to friction when soil is poured into the bag body 2. Furthermore, by disposing the protective sheet 10 on the inner side of the vegetation sheet 3 (the side facing away from the side portion 6), there is also the advantage that the protective sheet 10 can reduce damage to the vegetation sheet 3 caused by soil when soil is poured into the bag body 2.

[0025] The base fabric 8 includes a base net 8a made of a tangled folded net with a mesh size that allows plants to germinate, and a sheet 8b through which plants can germinate. By configuring the base fabric 8 in this manner, the base fabric 8 does not prevent the germination of the plant seeds 9. The sheet 8b in this example is a thin cotton tangled with the base net 8a and shaped into a sheet, but is not limited to this. It is also possible to use a water-soluble sheet, or a water-insoluble fiber or nonwoven fabric polymerized into a sheet using a water-soluble glue, which does not prevent the germination of the plant seeds. The base fabric 8 may be composed of only the base net 8a.

[0026] It is preferable that the plant seeds 9 are the seeds of plants that easily penetrate (can penetrate deep into) the soil put into the bag body 2, because as the plants grow, they will penetrate the soil and increase the strength of the sandbag that constitutes the greening sandbag 1. It is preferable that the plant seeds 9 are the seeds of local plants, but it is also possible to use Bermuda grass, creeping red fescue, bentgrass, and other types of grass that are known as Western grasses and can be expected to have the effect of preventing soil erosion through greening.

[0027] If protective sheet 10 is, for example, a water-soluble sheet and this protective sheet 10 is attached and fixed to base fabric 8 with water-soluble glue 11 or the like, soil is poured into bag body 2, and when the soil comes into contact with protective sheet 10 and absorbs moisture, it dissolves in water, allowing plant seeds 9 to easily take root. Water-soluble glue 11 is a water-absorbent polymer such as polyvinyl alcohol, which allows water retention and creates an environment conducive to the growth of plant seeds 9. Protective sheet 10 is not limited to a water-soluble sheet that is water-soluble, but may be one obtained by polymerizing palm fiber, jute fiber, biodegradable plastic, or photodegradable plastic fibers with a water-soluble glue or the like.

[0028] On the other hand, it is also possible to use a water-insoluble sheet having a mesh size that allows plants to pass through as the protective sheet 10. In this case, the protective sheet 10 may be formed of a hard and dense mesh to ensure that soil does not leak out of the bag body 2. The mesh size of the protective sheet 10 is preferably 1 mm to 15 mm, and more preferably 3 mm to 8 mm. If the mesh size is smaller than 3 mm or even 1 mm, it may be likely to hinder the passage of plant roots through the sheet, while if the mesh size is larger than 8 mm or even 15 mm, soil may be likely to leak (spill out).

[0029] As shown in FIG. 1(A), the connecting body 4 is a constricted part in which a drawstring 12 (e.g., made of polypropylene fiber) is passed through a rope hole (not shown) that extends around the circumferential direction of the cylindrical upper part, and when both ends of the drawstring 12 are pulled out as far as possible from two through holes (not shown) that communicate with the rope hole and tied, the entire body is drawn by the drawstring 12 to close the mouth, and is configured to have sufficient strength to hold the soil and sand placed inside the bag body 2 and to allow plants to sprout. The connecting body 4 may be made of a coarse single raschel net made of synthetic resin fiber (e.g., polyethylene) that has both flexibility and strength. The bag body 2 and the connecting body 4 may be integrated by an appropriate means such as sewing. As an example of dimensions, the height (vertical width when unfolded) of the connecting body 4 connected to the entire upper end of the side part 6 is 0.45 m. If the connecting body 4 is made of a net, the mesh size of the net may be about 1 cm.

[0030] In the greening sandbag 1 shown in Fig. 1(A), the vegetation sheet 3 is fixed to the connecting body 4, not to the bag body 2. This fixing can be performed by connecting with fasteners such as staples, sewing with thread, bonding with adhesive, heat welding, etc., and the position of the fixing part 13, which is the part where this fixing is performed, can be set appropriately. In this example, almost the entire upper end part of the vegetation sheet 3 is fixed to the opening edge part 14 at the upper end of the connecting body 4.

[0031] To fill the greening sandbag 1 constructed as described above with soil, for example as shown in Figure 2(A), the connecting body 4 is folded back to the outside of the bag body 2, and the upper part of the vegetation sheet 3 (the part along the inner surface of the connecting body 4) is also folded back to the outside of the bag body 2, and the opening 15 formed by the upper end of the bag body 2 is widened as a result of this folding.The greening sandbag 1 in this state is supported on a support frame 16, and soil S is poured into the bag body 2 through the opening 15 using heavy equipment 17 such as a hydraulic excavator.

[0032] The support frame 16 for the greening sandbag 1 may be any that maintains the position of the greening sandbag 1 on the ground when the soil S is poured in and prevents it from falling over, and may be, for example, as shown in Figures 2(A) and 3, by hanging a hanging hook 19 held by the support frame 16 on loop bands 18 provided at each of the four corners of the input port 15. In this case, for the loop bands 18 in a position that will be covered by the vegetation sheet 3, an opening (the periphery of the opening may be reinforced with eyelets) or a slit may be provided in the vegetation sheet 3, and the loop bands 18 may be taken out from there. Note that the loop bands 18 may be provided at the four corners of the opening edge 14 instead of the four corners of the input port 15.

[0033] When making a large greening sandbag 1, it is possible to use heavy machinery 17 to dump a large amount of soil S, for example about 1 ton (t), into the greening sandbag 1 (bag body 2).If the soil S is collected, for example, on-site, the heavy machinery can be brought to the site where a retaining wall or earthwork is to be formed using the greening sandbag formed by dumping the soil S into the greening sandbag 1, and construction can be carried out quickly.

[0034] By folding the connecting body 4 back to the outside of the bag body 2 as described above, the connecting body 4 is less likely to get in the way of the operation of pouring soil S into the bag body 2, and by fixing the vegetation sheet 3 to the connecting body 4 that is folded back outward, even if the part of the vegetation sheet 3 located within the bag body 2 comes into contact with the soil S (downward soil pressure) when it is poured in and is pulled toward the bottom of the bag body 2, the pulling force can be absorbed to a certain extent by the deformation of the connecting body 4, thereby preventing the vegetation sheet 3 from falling off from the fixing part 13 to the connecting body 4, and ultimately, it is possible to align the part of the vegetation sheet 3 located within the bag body 2 with the inside of the side of the bag body 2, promoting reliable greening of this side.

[0035] After the soil S is poured into the bag body 2, the hanging hooks 19 are removed from each loop band 18, the connecting body 4 that has been folded over the outside of the bag body is returned to its original state (unfolded state) (see Fig. 2(B)), and the tightening rope 12 is pulled to close the upper end (opening edge 14) of the connecting body 4, completing the storage of the soil S in the greening sandbag 1 and completing the greening sandbag 20 (see Fig. 4(A)). The completed greening sandbag 20 can be hoisted and moved by hooking the locking part 7a of the hanging belt 7 onto the hook of heavy machinery (such as a crane).

[0036] As described above, in the greening sandbag 1, after the soil S is poured into the bag body 2, the connecting body 4, which has been folded over on the outside of the bag body 2, is returned to its original state (unfolded state) and its upper end (opening edge portion 14) is closed to complete the storage of the soil S. At this time, if at least a part of the vegetation sheet 3 is positioned on the top side of the bag body 2, it is also possible to promote greening of the top surface of the bag body 2. In this case, it is possible to green both the sides and top surface of the bag body 2 with a single vegetation sheet 3, without having to prepare separate vegetation sheets for the sides and top of the bag body 2 and install them separately.

[0037] In the greening sandbag 1, the vegetation sheet 3 is fixed at a position from the lower end of the connecting body 4 toward the opening edge 14 at the upper end of the connecting body 4 (a position not less than halfway from the lower end to the opening edge 14 at the upper end), and the portion (excess length) from the lower end of the connecting body 4 to the fixing portion 13 to which the vegetation sheet 3 is fixed becomes a pulling allowance that allows the portion of the vegetation sheet 3 located within the bag body 2 to be pulled toward the bottom of the bag body 2 when it comes into contact with the soil S (downward soil pressure) when it is inserted, and the vegetation sheet 3 can be aligned downward from the upper end of the inner side of the bag body 2, thereby promoting reliable greening of the sides of the bag body 2.

[0038] In particular, in the greening sandbag of this example, by fixing the vegetation sheet 3 along the opening edge 14 at the upper end of the connecting body 4, the above-mentioned tensile allowance can be maximized, and even if the vegetation sheet 3 is dragged significantly toward the bottom of the bag body 2 by the added soil and sand, the vegetation sheet 3 is likely to be positioned on the top side of the bag body 2, which is therefore more effective in promoting greening of the top part of the bag body 2.

[0039] In addition, in the greening sandbag 1 of this example, the vegetation sheet 3 is aligned along at least approximately half the circumference of the connecting body 4, and by extending this vegetation sheet 3 to the bag body 2 side, it is possible to green at least approximately half the circumference of the side of the bag body 2 and approximately half of the top surface. The sides of the greening sandbag formed in this way will have a front side where the vegetation sheet 3 is present inside and a back side where it is not present, and when installing it in the construction area, the direction can be adjusted to the site. For example, if the vegetation sheet 3 is positioned using both ends of the tightening rope 12 as a marker (it is possible to position the left-right center of the vegetation sheet 3 near both ends of the tightening rope 12 or in a position opposite them), it will be easy to distinguish the front and back of the greening sandbag at the site.

[0040] Furthermore, the greening sandbag 1 can be folded and transported before use (before soil is added), and it becomes a greening sandbag by filling it with soil on-site, so it goes without saying that the costs involved in transportation can be reduced.

[0041] Fig. 4(A) shows the state of a site where greening sandbags 20, formed by filling greening sandbags 1 with soil, have been formed as an earth retaining wall. As shown in this figure, the greening sandbags 20 are closely lined up horizontally and are arranged in layers in the depth direction, offset by about half the diameter of the greening sandbags 20. This allows the side portion of the bag body 2, with the vegetation sheet 3 along the inside, to be positioned on the surface or top surface of the earth retaining wall or earthwork.

[0042] Here, because the greening sandbags 20 are constructed to be self-supporting, when forming a retaining wall at a prescribed position on a slope or a river bank as shown in Fig. 4(A), the greening sandbags 20 can be arranged in a layered manner at the construction site, and each greening sandbag 20 can be set up by itself simply by being placed, which has the advantage that it requires less effort and can be easily set up compared to non-self-supporting sandbags, which require parts to be fixed to the construction site and the effort required for that. In other words, even if non-self-supporting sandbags are stacked, they need to be anchored by piles, for example. Incidentally, to obtain a self-supporting greening sandbag, it is preferable to use a greening sandbag having dimensions and shapes similar to those of a general large sandbag. The shape of the greening sandbag can be a cylinder or a rectangular parallelepiped. For example, a large sandbag can be formed from a cylindrical greening sandbag with a bottom as shown in FIG. 2(B) having a bottom 5 with a diameter of 800 mm to 1200 mm and a side portion 6 with a height of 600 mm to 1100 mm. In this case, a large amount of soil, 0.65 to 1.2 tons, is poured into the sandbag. The length-to-width ratio (length:width) of the large greening sandbag 20 into which a large amount of soil is poured is preferably 1:0.8 to 1:1.3. In terms of the aspect ratio, if the width is less than 0.8 when the length is 1, the balance will be poor and it will be difficult to install it by itself. On the other hand, if the ratio is more than 1.3, the height will not be sufficient for the installation area, so many layers will be needed to install it to the required height, which may result in excessive effort and cost.

[0043] FIG. 4(B) shows the state of the greening sandbag 20 several months after its installation. As shown in this figure, by simply leaving the greening sandbag 20 at the site after construction, plants 21 grow all over the surface and upper surface of the greening sandbag 20, and the construction site can be greened using the greening sandbag 20, and the growth of the plants 21 improves the scenery. In addition, the roots of the grown plants 21 spread inside the greening sandbag 20, and the roots of the plants can prevent the outflow of soil S, so that even if the greening sandbag 1 deteriorates and breaks, the outflow of soil can be prevented. Furthermore, the roots spread underground at the site, and further improvement in stability can be expected.

[0044] It is to be noted that the present invention is not limited to the above-described embodiment, and can be modified in various ways without departing from the spirit and scope of the present invention. For example, the following modifications can be mentioned.

[0045] The bottom 5 of the bag body 2 of the greening sandbag 1 shown in FIG. 1(A) etc. is substantially circular, but is not limited to this and may be rectangular, for example.

[0046] In the greening sandbag 1 shown in Figure 1(A) etc., the vegetation sheet 3 is arranged along approximately half the circumference of the connecting body 4, but this is not limited to this, and for example, the vegetation sheet 3 may be arranged along approximately the entire circumference of the connecting body 4.In this case, by extending this vegetation sheet 3 directly to the bag main body 2 side, it is possible to green approximately the entire circumference of the side and approximately the entire top surface of the bag main body 2. Furthermore, if the range of the fixing portion 13 of the vegetation sheet 3 relative to the connecting body 4 is not approximately the entire circumference of the connecting body 4 but is limited to approximately half of it, when the bucket of heavy equipment such as a backhoe used to pour soil into the bag body 2 comes into contact with the vegetation sheet 3, or when the falling soil comes into direct contact with the vegetation sheet 3, the stress is likely to be concentrated at the fixing portion 13, thereby increasing the risk of the vegetation sheet 3 falling off.Therefore, it is preferable to consider the direction in which the bag body 2 is held when pouring soil so that the vegetation sheet 3 is positioned on the opposite side of the heavy equipment, but by aligning the vegetation sheet 3 along approximately the entire circumference of the connecting body 4 (extending the fixing portion 13 of the vegetation sheet 3 relative to the connecting body 4 around approximately the entire circumference of the connecting body 4), the above-mentioned stress can be distributed and there is no restriction on the direction in which the bag body 2 is held when pouring soil. Furthermore, by providing a vegetation sheet 3 around almost the entire circumference of the bag body 2 and allowing vegetation to grow in all directions except for the bottom 5 of the bag body 2, there is no need to consider the orientation of the greening sandbag 1 (greening sandbag 20) when setting it up at the site after soil has been poured in, thereby improving work efficiency.

[0047] As shown in Figure 5, the vegetation sheet 3 may be provided with an extension portion 22 that extends above the connecting body 4. In this case, even if the upper end of the connecting body 4 moves to the upper end of the bag body 2 when soil is poured into the bag body 2, the extension portion 22 can cover some of the top surface of the bag body 2, thereby promoting reliable greening on the top surface of the bag body 2.

[0048] Needless to say, the modified examples given in this specification may be combined as appropriate. [Explanation of symbols]

[0049] 1 Greening sandbags 2 Bags 3. Vegetation Sheet 4 Connector 5 Bottom 6 Side part 7 Suspension belt 7a Locking part 8 Base fabric 8a Base net 8b sheet 9 plant seeds 10 Protective Sheet 11 Sizing agent 12 Squeezing rope 13 Fixed part 14 Opening edge 15 Inlet 16 Support Frame 17 Heavy Machinery 18 Loop Band 19 Hanging hook 20 Green Sandbags 21 Plants 22 Extension S. Soil

Claims

1. The bag has a bottomed cylindrical bag body into which soil and sand are poured, and a vegetation sheet is placed inside the bag body. The connecting body connected to the upper side of the bag body has a cylindrical shape that is continuous with the bag body and can be folded back to the outside of the bag body. A greening sandbag with a vegetation sheet fixed to a connecting body.

2. 2. A sandbag according to claim 1, wherein the vegetation sheet is fixed to the connecting body at a position extending from the lower end toward the opening edge of the upper end.

3. 3. A sandbag according to claim 2, wherein a vegetation sheet is fixed along the edge of the opening of the connecting body.

4. 4. A sandbag according to claim 2 or 3, wherein the vegetation sheet is arranged along at least approximately half of the circumference of the connecting body.

5. 5. The sandbag according to claim 4, wherein the vegetation sheet is arranged along substantially the entire periphery of the connecting body.

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