JP2020186547A - Slope stabilizer, slope frame structure, and method of constructing slope frame structure - Google Patents

Abstract

To provide a slope stabilizer that can more reliably suppress the outflow of earth and sand.SOLUTION: A slope stabilizer 100 comprises: a plurality of rod-shaped slope frame members 110 installed on a slope 11 and assembled in a grid pattern; and a padding material 120 installed so as to fill a gap S between the slope frame member 110 and the ground surface from an upper side in the inclination direction and having flexibility that allows bending and deformation, in each lattice made of the slope frame material 110.SELECTED DRAWING: Figure 2

Description

The present invention relates to a slope stabilizing device installed on a slope or a slope to prevent the outflow of earth and sand, a law frame structure, and a method for constructing the law frame structure.

Conventionally, a grid-like slope frame has been used for the purpose of stabilizing the slope to prevent concentrated flow of rainwater on the slope and promoting vegetation greening of the slope to improve the aesthetic appearance of the slope. Construction on the slope is being carried out. As a construction method for constructing a legal frame, for example, a construction method using logs such as thinned wood (log method frame construction) can be mentioned. This log frame construction has the advantage that after the slope is covered with vegetation and stabilized, the logs are humus and become close to a natural mountain, which is environmentally and landscape-friendly.

In relation to the construction method, Patent Document 1 discloses a legal frame construction method that stabilizes the slope and greens the entire slope, improves the aesthetic appearance, and effectively utilizes thinned wood. Hereinafter, in the paragraph, the reference numerals of Patent Document 1 are shown in parentheses. In the law frame construction of Patent Document 1, the slope (1) is stabilized by assembling the wood for the law frame (3) in a grid pattern using a plurality of law frame connectors (2). Build the structure. Specifically, the legal frame connector (2) is composed of a tubular body having an opening for connecting the ends of the legal frame wood (3), and the tubular body has a cross-shaped or L-shaped shape. Or it is formed in a T-shape. Then, the end portions of the round bar-shaped frame wood (3) are connected to the openings of the cylinders constituting each frame connector (2) to form a plurality of frames (4) in a grid pattern. ing. An anchor (5) is placed in the center of the legal frame connector, which is the intersection of each frame (4), and fixed to the slope (1). The legal frame wood (3) is formed by cutting a long round bar-shaped thinned wood (K) to a predetermined length, and is inserted into the opening of the legal frame connector (2) as needed. The end is scraped as much as possible, the timber for the legal frame (3) is inserted into the opening of the legal frame connector (2), and the nail (7) is driven for fixing. Then, an anchor (5) is appropriately driven from or while assembling the frame body (4) to fix the frame body (4) to the slope (1).

Japanese Unexamined Patent Publication No. 2001-329541

In the conventional legal frame structure as in Patent Document 1, since the natural slope has irregularities, the horizontal legal frame wood does not come into contact with the ground, and there is a gap between the legal frame wood and the ground. Occurs. In particular, when the slope or slope is ground level, it is generally impossible to remove the unevenness no matter how much the ground is leveled. Then, the gap between the legal frame wood and the ground surface becomes a path for surface water flowing on the ground surface such as rainwater, and through the gap, the surface water flows along the inclined direction at a high flow velocity, and the surface water At the same time, the problem was that a large amount of surface sediment flowed downstream. If the erosion damage caused by such scouring of surface earth and sand spreads, in the worst case, there is a risk that the slope will collapse. That is, in the conventional legal frame structure, there is a problem that the legal frame cannot sufficiently exert rainwater dispersion and reduce the flow velocity of surface water, and cannot sufficiently prevent soil erosion and runoff.

The present invention has been made to solve the above problems, and an object of the present invention is a slope stabilizer, a legal frame structure, and a legal frame that can more reliably suppress the outflow of earth and sand. It is to provide a way to build on the surface.

The slope stabilizer according to claim 1 is
Multiple rod-shaped frame materials installed on the slope and assembled in a grid pattern,
Each lattice made of the legal frame material is provided with a padding material which is installed so as to fill a gap between the legal frame material and the ground surface from the upper side in the inclination direction and has flexibility so as to be flexible and deformable. It is characterized by.

The legal frame stabilizer according to claim 2 is the legal frame stabilizer according to claim 1, wherein the plurality of legal frame members are a vertical axis member installed along the inclination direction and in the inclination direction. It is composed of a horizontal shaft member installed along orthogonal directions, and the padding material is characterized in that it is arranged in contact with the upper surface of the horizontal shaft member.

The legal frame stabilizer according to claim 3 is the legal frame stabilizer according to claim 1 or 2, wherein the filling material is a particulate filler and a tubular shape containing the filler. It is characterized by being composed of a bag body.

The legal frame stabilizer according to claim 4 is the legal frame stabilizer according to claim 3, wherein the filler is composed of particles having an average particle size of less than 1 cm, and is a chemical fiber, a urethane resin, or a resin crushed material. , Sediment improvement material, organic soil material, locally generated soil, wood material, and a combination thereof.

The legal frame stabilizer according to claim 5 is the legal frame stabilizer according to claim 3 or 4, wherein the bag body has a rooting property that allows the root system of a plant to pass through. And.

The legal frame stabilizer according to claim 6 is the legal frame stabilizer according to any one of claims 3 to 5, wherein the bag body is a bag-shaped or tubular seed capable of containing a growth base material. A second layer that covers the entire outer surface of the first layer so as to sandwich the seeds attached to the outer surface of the first layer, the seeds, and the first layer. The first layer has a non-hydrolyzable property capable of retaining the growth base material inside, and has a rooting property that allows roots grown from the seed to pass through. The second layer comprises a corrosive, degradable or hydrolyzable sheet and is characterized by having a sprouting property that allows the buds of vegetative plants germinated from the seeds to pass over time.

In the legal frame structure according to claim 7, the slope stabilizer according to any one of claims 1 to 6 is installed on the slope, and the slope stabilizer is placed on the upper surface of the padding material of the slope stabilizer. , It is characterized in that a flat portion is formed.

The method for constructing the legal frame structure according to claim 8 includes a step of assembling a plurality of rod-shaped legal frame members in a grid pattern and installing them on a slope.
A step of installing a plurality of padding materials having flexibility that can be flexed and deformed so as to fill the space between the method frame material and the ground surface from the upper side in the inclination direction in each lattice composed of the method frame material.
It is characterized by including.

According to the legal frame stabilizer according to claim 1, in each lattice made of the legal frame material, the padding material is configured to fill the space between the legal frame material and the ground surface from the upper side in the inclination direction. .. Since the padding material has flexibility that can be flexed and changed and can be deformed to follow the unevenness of the ground surface, the gap between the frame material and the ground surface is surely filled, and the method It is possible to prevent the formation of a surface water passage between the frame material and the ground surface. That is, the legal frame stabilizer of the present invention makes it possible for the legal frame material to more reliably exert the effect of dispersing surface water and the effect of reducing the flow velocity, and as a result, effectively flushing out the sediment on the slope. It can be suppressed.

According to the legal frame stabilizer according to claim 2, in addition to the effect of the invention according to claim 1, the horizontal shaft member is installed along the direction orthogonal to the tilt direction, and the horizontal shaft member is tilted in the tilting direction. By arranging the padding material in contact with the surface facing upward, it is selectively prevented from forming a path for surface water communicating from the upper side to the lower side of the horizontal shaft member. That is, since it is not necessary to install the padding material for the vertical axis material installed along the inclination direction, the amount of material and the amount of construction required for the slope stabilization work can be saved. Further, since the padding material extends in the horizontal direction together with the horizontal shaft material, the surface water is dispersed in the horizontal direction, and the momentum of running water can be effectively reduced.

According to the legal frame stabilizer according to claim 3, in addition to the effect of the invention according to claim 1 or 2, the filling material is contained in a tubular bag body. , It can be installed so as to fill the gap just by placing the padding material along the legal frame material. That is, the legal frame stabilizing device of the present invention facilitates the workability of the slope stabilizing work.

According to the legal frame stabilizer according to claim 4, in addition to the effect of the invention according to claim 3, the filler has particles having an average particle size of less than 1 cm, so that the filler contains water while containing water. The surface water flowing downward in the inclination direction is prevented from passing through the padding while maintaining the flow velocity. That is, the padding material can effectively exert the effect of reducing the flow velocity of the surface water by blocking a part of the surface water flowing in the inclined direction and dispersing it laterally.

According to the legal frame stabilizer according to claim 5, in addition to the effect of the invention according to claim 3 or 4, the bag body has rooting property, so that the seeds of the plant are rooted inside the bag body. The padding material can be greened. By greening the padding material, it is possible to improve the landscape and strengthen the effect of preventing outflow.

According to the legal frame stabilizer according to claim 6, in addition to the effect of the invention according to any one of claims 3 to 5, in the bag body of the stuffing material, with the first layer having rootability. The seeds of the vegetation plant are attached between the second layer having a sprouting property covering the outer surface thereof. Since the second layer is configured to allow the passage of shoots of vegetation plants germinated from seeds, germination from seeds is not hindered. Also, since the seeds are protected by the second layer, there is little risk of them running off the vegetation bag in the presence of the second layer. Since the seeds are attached to the outer surface of the first layer, the seeds can be prevented from flowing down even by relatively strong running water. On the other hand, the first layer can maintain and retain the growth base material inside and allows roots grown from seeds to pass through. In addition, since the first layer is non-hydrolyzable and is not decomposed (hydrolyzed) in a short period of time by rainfall, the first layer maintains a bag-shaped or tubular shape for a long period of time. can do. As a result, it is possible to suppress the outflow of seeds and growth base material over time, suppress the flow of the growth base material in the vegetation bag, and stably maintain the growth base material inside for a long period of time. As a result, the greening of the filling material can be promoted.

According to the legal frame structure according to claim 7, the effects of the inventions according to claims 1 to 6 can be exhibited as the legal frame structure. Further, the upper surface of the padding material has a flat portion (or a horizontal plane), and the flying seeds can be captured in the flat portion. As a result, the padding can be efficiently greened with the native plants of the land.

According to the method of constructing the legal frame structure according to claim 8, in each lattice made of the legal frame material, the padding material fills the space between the legal frame material and the ground surface from the upper side in the inclination direction. Install the filling material. Since this padding material has flexibility that can be flexed and changed and can be deformed so as to follow the unevenness of the ground surface, the gap between the frame material and the ground surface is surely filled and the method is performed. It is possible to prevent the formation of a surface water passage between the frame material and the ground surface. That is, the legal frame structure constructed by the method of the present invention enables the legal frame material to more reliably exert the effect of dispersing surface water and the effect of reducing the flow velocity, and as a result, the sediment on the slope is washed away. It can be effectively suppressed.

The schematic perspective view of the legal frame structure of one Embodiment of this invention. The side view which shows typically the legal frame structure of FIG. FIG. 6 is a schematic view showing a form of damming surface water in the slope structure of FIG. FIG. 6 is a schematic view showing a form of capturing flying seeds in the slope structure of FIG. FIG. 5 is a schematic view showing a legal frame material connector constituting the legal frame structure of FIG. 1. The schematic diagram which shows the process of connecting the legal frame material in the method of constructing the legal frame structure of one Embodiment of this invention. It is a figure which shows an example of the packing material which constitutes the legal frame structure of FIG. The schematic diagram of the slope structure (or slope stabilizer) of another embodiment of this invention. The schematic side view of the slope structure of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The shapes of the figures referred to in the following description are conceptual diagrams or schematic views for explaining suitable shape dimensions, and the dimensional ratios and the like do not always match the actual dimensional ratios. That is, the present invention is not limited to the dimensional ratio in the drawings.

The slope stabilizing device 100 of the present embodiment is used for the purpose of constructing a slope frame on the slope 11 and stabilizing the ground surface of the slope 11 to prevent the slope 11 from collapsing or the like. FIG. 1 shows a legal frame structure 10 according to an embodiment of the present invention. The legal frame structure 10 is a structure in which the legal frame is constructed on the slope 11 by installing the slope stabilizing device 100 on the slope 11. In the present specification, the direction in which the inclination gradient becomes the largest from the upper side to the lower side on the slope 11 is defined as the inclination direction (or the vertical axis direction). On the other hand, the direction in which the inclination gradient becomes almost 0 orthogonal to the inclination direction is defined as the horizontal direction (or the horizontal axis direction). That is, the surface water flowing on the ground surface of the slope 11 such as rainwater naturally flows down from the upper side of the slope 11 along the inclination direction. Further, in the present embodiment, the slope 11 is a ground leveled ground and has many large and small irregularities on the ground surface. Further, on the slope 11, the topsoil of the ground may be exposed, or a vegetation sheet or a vegetation mat may be laid, but in the present embodiment, vegetation is laid on the ground surface for convenience of explanation. Do not draw sheets etc.

As shown in FIG. 1, the slope stabilizing device 100 is installed on the slope 11, and a plurality of rod-shaped legal frame members 110 assembled in a grid pattern and predetermined positions in each lattice composed of the legal frame members 110. It is provided with a plurality of packing materials 120 installed in the.

As shown in FIG. 1, the plurality of legal frame members 110 include a vertical axis member 111 installed along the inclination direction and a horizontal axis member 112 installed along the horizontal direction orthogonal to the inclination direction. That is, the vertical axis member 111 is arranged along the vertical axis direction in which the inclination gradient is maximum, and the horizontal axis member 112 is arranged along the horizontal axis direction in which the inclination gradient is minimum (or substantially 0). In the legal frame structure 10 of FIG. 1, a plurality of vertical axis members 111 and horizontal axis members 112 are assembled so as to be orthogonal to each other, and a plurality of square or rectangular lattices are formed on the slope 11. It is responsible for the stabilization of 11. The vertical axis member 111 and the horizontal axis member 112 are connected at right angles by the legal frame member connector 130.

In the present embodiment, the legal frame material 110 is a log of wood produced from thinned wood. In general, since the method frame material 110 is manufactured from thinned wood, it has irregularities on its surface and is not uniform in terms of its thickness and length. On the other hand, the use of thinned wood for the law frame 110 leads to environmental conservation, and after the slope 11 is covered with vegetation and becomes stable, the law frame 110 constituting the law frame 12 is naturally humus. Since it is close to the mountain, it has an advantage in terms of landscape formation. However, the legal frame material of the present invention is not limited to the round bar of wood, and can be selected from various bar-shaped members. For example, the frame material may be a square bar made of resin or metal.

The packing material 120 has flexibility that allows it to bend and deform, and is configured as a tubular body or a bag body that extends in an axial shape. The padding material 120 has an appropriate flexibility that can be deformed by following the uneven shape of the ground surface of the ground. Further, each padding material 120 has a length corresponding to the horizontal side of the lattice of the legal frame material 110, and from the viewpoint of workability, one padding material 120 is used for the horizontal shaft material 112 over the entire axial direction. It is preferable that they can be touched. In the present embodiment, the packing material 120 is composed of a particulate filler 121 and a tubular bag 122 containing the filler 121. The filler 121 is preferably composed of particles having an average particle size of less than 1 cm, and is composed of chemical fibers, urethane resin, resin crushed material, earth and sand improving material, organic soil material, locally generated soil, wood material, growth base material, and these. Can be selected from a combination of. That is, the packing material 120 has at least a predetermined solidity that prevents running water from passing through the inside while maintaining the flow velocity. The sack body 122 can preferably be formed from a non-woven fabric or woven fabric having a rooting property that allows the root system of the plant to pass through. This makes it possible to green the filling material 120 itself.

As shown in FIG. 1, each padding material 120 is installed so as to fill a gap between the law frame material 110 and the ground surface from the upper side in the inclination direction in each lattice composed of the law frame material 110. More specifically, the padding member 120 is arranged in contact with the surface of the lattice composed of the vertical axis member 111 and the horizontal axis member 112 facing upward.

FIG. 2 is a schematic side view of the legal frame structure 10. As shown in FIG. 2, there are large and small irregularities on the ground surface of the slope 11, and a gap S is formed between the slope member 110 (or the horizontal shaft member 112) and the ground surface. The gap S is randomly formed along the axial direction of the horizontal shaft member 112. Then, this gap S serves as a path for surface water flowing down the ground surface of the slope 11. As shown in FIG. 2, the filling material 120 is placed on the slope 11 and is in contact with the surface of the horizontal shaft member 112 facing upward in the inclination direction, so that the horizontal shaft member 112 has an outer surface shape and an uneven shape of the ground surface. It is flexibly deformed to follow. That is, the padding material 120 is in contact with the outer surface of the horizontal shaft member 112 and the ground surface without any gap. As a result, the gap S is covered by the filling material 120 without being exposed to the outside, and the gap S that can serve as a passage for the surface water is surely closed. Further, the filling material 120 is deformed so as to have a flat portion 123 on the upper surface. The flat portion 123 is a substantially horizontal plane facing upward in the vertical direction. That is, the flat portion 123 functions to reduce the average gradient of the slope 11 and reduce the flow velocity of the surface water flowing on the ground surface.

FIG. 3 is a schematic view showing the effect of dispersing surface water and the effect of reducing the flow velocity in the slope structure 10. As shown in FIG. 3, the surface water flowing on the inclined surface of the slope 11 once rides on the flat portion 123 of the packing material 120 and is dispersed so as to deviate in the horizontal axis direction. Further, since the filler of the packing material 120 has a predetermined solidity, a part of the surface water is absorbed and a part of the surface water is temporarily maintained on the flat portion 123. Then, the surface water branches into two, one that passes through the inside of the filling material 120 and passes through the gap S, and one that passes over the flat portion 123. That is, in the legal frame structure 10, the surface water is dispersed so as not to be concentrated at one point as compared with the surface water that simply falls on the slope 11, and the flow velocity of the surface water is sufficiently reduced. As a result, erosion of the soil on the ground surface of the slope 11 due to running water is effectively suppressed.

4 (a) and 4 (b) are schematic views showing the greening effect of the filling material 120 in the slope structure 10. As shown in FIG. 4A, since the padding material 120 has a flat portion 123 forming a substantially horizontal plane, the native flying seeds can be effectively captured in the flat portion 123. For example, as shown in FIG. 4B, the padding material 120 itself is effective by capturing the seeds flowing on the inclined portion of the slope 11 by the surface water in a flat field where the flow velocity is reduced and the seeds taking root with time. Can be greened.

FIG. 5 is a schematic plan view of a developed form of the legal frame material connector 130 constituting the legal frame structure 10. As shown in FIG. 5, the method frame material connector 130 includes a sheet body 131 made of a sheet-like material having flexibility that allows it to bend and deform. The sheet body 131 is made of a net-like body integrally formed of a hard synthetic resin. Since the sheet body 131 is formed as a so-called "non-knitted net" integrally molded with synthetic resin, it has higher strength and durability than a net formed by knitting a wire rod. Such nets are also referred to as tensor® sheets. In this embodiment, polypropylene having excellent rigidity and workability was used as the synthetic resin. However, the present invention is not limited to this, and those skilled in the art can arbitrarily select other synthetic resins having flexibility and flexibility such as high density polyethylene (HDPE), polycarbonate, and ABS resin. Alternatively, as the sheet body has flexibility and flexibility, hard rubber, metal (wire mesh), or the like can be used, and further, it is selected from forms other than the mesh body such as a non-woven fabric sheet. May be done.

The sheet body 131 is fixed to a plurality of grip portions 132 that wrap around the legal frame member 110 to grip the legal frame member 110, a connecting portion 133 that connects the plurality of grip portions 132 to each other, and a slope 11. It has a fixed portion 134. More specifically, in the present embodiment, the connecting portion 133 is a cross-shaped region in the center of the sheet body 131. At the tips of the four limbs of the connecting portion 133, strip-shaped regions extending orthogonal to the extending direction thereof are provided. The band-shaped region is defined as the grip portion 132. That is, the plurality of grip portions 132 are arranged in the radial direction thereof with the connecting portion 133 as the center. Each grip portion 132 can be bent and deformed in a tubular shape so as to wrap around the outer surface of the method frame member 113. The grip portion 132 preferably has a length of at least half the peripheral length of the legal frame member 110. Further, the grip portion 132 may have a length such that the free end thereof is wound around the lower surface of the legal frame member 110 when it is wound around the legal frame member 110. Further, in the center of the connecting portion 133, a fixed portion 134 fixed to the slope 11 by an anchor member (see FIG. 6) is arranged. The fixed portion 134 is a part of the net-like sheet body 131, and the sheet body 131 can be fixed to the slope 11 by driving the anchor member 136 into the gap between the nets. The fixed portion 134 may be provided at any portion as long as the sheet body 131 can be fixed to the slope 11. Further, each grip portion 132 is attached with a fastener 135 that maintains the grip portion 132 in a state of being wound around the legal frame member 110.

Next, a method of constructing the legal frame structure 10 of the present embodiment will be described. The method of constructing the legal frame structure 10 includes a step of assembling a plurality of rod-shaped legal frame members 110 in a grid pattern and installing them on the slope 11, and a plurality of padding members 120 having flexibility that allows bending and deformation. Each lattice made of the legal frame material 110 includes a step of installing the lattice from the upper side in the inclination direction so as to fill the space between the legal frame material 110 and the ground surface.

First, a required number of legal frame members 110 and legal frame member connectors 130 are prepared according to the area of the slope 11 to be stabilized. In the present embodiment, one legal frame member 130 connects four legal frame members 110. Then, the sheet body 131 of the legal frame material connector 130 is laid on the slope 11 in an unfolded form. The plurality of sheet bodies 131 are regularly arranged vertically and horizontally at substantially equal intervals according to the size of the grid of the legal frame 12 (the length of the legal frame member 110). Next, the fixed portion 134 of each sheet body 131 is fixed to the slope 11 via the anchor member 136. A wire mesh, a vegetation sheet, or the like may be laid on the slope 11 in advance to prevent the slope 11 from collapsing. Next, the legal frame member 110 is placed on the grip portion 132 and the limb portion of the connecting portion 133 of each sheet body 131, respectively. At this time, the adjacent legal frame members 110 are arranged so as to form a gap in the central region of the connecting portion 133. The size of this gap is arbitrarily determined. Further, the legal frame material 110 is bridged between two grip portions 132 of the adjacent sheet body 131 (legal frame material connector 100). Subsequently, in order to grip the plurality of legal frame members 110 by the plurality of gripping portions 132, each grip portion 132 is deformed so as to be wound around each legal frame member 130. The fastener 135 is operated to hook the hook to a part of the seat body 131 to keep the grip portion 135 wound around the legal frame member 110. Gripping and fastening work is performed on all the gripping portions 132 and the legal frame member 110. As a result, a vertical and horizontal grid-like legal frame can be constructed on the slope 11.

Next, a number of padding members 120 corresponding to the horizontal shaft members 112 of the legal frame are prepared. Here, since the vertical axis member 111 extends in the inclined direction, it is not necessary to prepare the packing material 120 for the vertical axis member 111. In each lattice of the legal frame, the packing material 120 is arranged so as to be pressed against the surface of the horizontal shaft member 112 facing upward in the inclination direction. At this time, the filling material 120 is pressed against the horizontal shaft material 112 and the ground surface, and the filling material 120 is crushed and deformed so that a gap is not formed between the filling material 120 and the target. At the same time, the filling material 120 is formed by hand so as to form a flat portion 123 on the upper surface of the filling material 120. Then, the padding material 120 is fixed to the ground with an anchor (not shown). The legal frame structure 10 can be constructed by fixing the padding member 120 adjacent to all the horizontal shaft members 112.

Hereinafter, the effects of the slope stabilizing device 100 and the legal frame structure 10 according to the embodiment of the present invention will be described.

According to the slope stabilizing device 100 and the law frame structure 10 of the present embodiment, in each lattice composed of the law frame material 110, the padding material 120 is located between the law frame material 110 and the ground surface from the upper side in the inclination direction. It is configured to fill the gap S. Since the padding material 120 has flexibility that can be flexed and changed and can be deformed so as to follow the unevenness of the ground surface, the gap between the legal frame material 110 and the ground surface is surely filled. , It is possible to effectively prevent the formation of a surface water passage between the legal frame material 110 and the ground surface. That is, the legal frame stabilizing device 100 and the legal frame structure 10 of the present invention enable the legal frame material 110 to more reliably exert the effect of dispersing surface water and the effect of reducing the flow velocity, and as a result, the slope 10 It is possible to effectively suppress the outflow of earth and sand.

The present invention is not limited to the above embodiment, and various embodiments and modifications can be taken. Hereinafter, modifications of the present invention will be described. In the drawings, the components having a common code number have the same or similar characteristics unless otherwise specified.

[Another Embodiment 1]
In the present invention, the padding material may be more functional. For example, as shown in FIG. 7, the padding material 120'may include a growth base material 121' as a filler and a vegetation bag 122' as a bag. The vegetation bag 122'has a first layer 122a that defines an internal space that can contain the growth base material 121, a seed 122c that is attached to the outer surface of the first layer 122a, and a first layer together with the seed 122c. It includes a second layer 122b that covers the entire outer surface of 122a. The second layer 122b is adhered to the outer surface of the first layer 122a, and the first and second layers 122a and 122b are joined to each other so that there is almost no gap between them. That is, the first layer 122a constitutes the inner layer of the vegetation bag 122, the second layer 122b constitutes the outer layer of the vegetation bag 122', and the vegetation plant is between the first layer 122a and the second layer 122b. Seeds 122c are sandwiched. Seeds 122c are held between layers so that they do not move. In addition, soil, fertilizer, water retention material, soil fungus and the like may be mixed and held together with the seed 122c.

The first layer 122a is made of a non-hydrolyzable sheet and is configured to be able to maintain its original shape even when it rains. In particular, in order to prevent the contents of the vegetation bag 122'from flowing out for a long period of time, the first layer 122a is formed of a non-hydrolyzable material capable of maintaining its shape for at least 3 months after construction. As a result, the first layer 122a can hold the growth base material 121'inside for a long period of time. Further, the first layer 122a is a material having a rooting property (roots pass through) while suppressing the outflow of the internal growth base material 121'and allowing the roots grown from the seeds 122c (s) to pass through. It is composed of a non-hydrolytic sheet having a possible gap or a mesh-like non-hydrolytic sheet). That is, the first layer 122a is a gap (mesh or opening) through which the roots grown from the seed 122c can pass while suppressing the growth base material 121'passing through the first layer 122a and flowing out to the outside. have. For example, the first layer 122a can be selected from non-woven fabrics, woven fabrics, paper (non-hydrolyzable), water-insoluble films, reticulated bodies or combinations thereof.

The second layer 122b is configured to allow the passage of vegetation plant sprouts germinated from seeds 122c over time. In this embodiment, the second layer 122b is made of a hydrolyzable (water-soluble, water-sensitive) sheet. The hydrolyzable sheet can easily lose its shape and strength in a short period of time (one to several times of precipitation) after installation, such as being hydrolyzed by rainfall or being water-soluble. The second layer 122b may be a corrosive or degradable sheet. A corrosive or degradable sheet is one that does not retain its original shape by being decomposed or humus within a short period of time (within 1 to 3 months) after installation. In addition, the second layer 122b of the present embodiment does not have a significant gap (mesh, mesh). However, if it is possible to sandwich and hold the seed 122c between the first layer 122a and the second layer 122b, a large number of openings may be formed in the second layer 122b. For example, the second layer 122b can be selected from a water-soluble non-woven fabric, a water-soluble woven fabric, a water-soluble film, paper, or a combination thereof.

According to the padding material 120', the seed 122c and the growth base material 121'are suppressed from flowing out over time, and the flow of the growth base material 121 in the vegetation bag 122' is suppressed, so that the growth base material 122'is used for a long period of time. It can be stably maintained inside. Thereby, it is possible to further promote the greening of the filling material 120'.

[Separate Embodiment 2]
The filling material of the present invention is not limited to the bag-shaped or tubular form. 8 and 9 show a legal frame structure 20 and a slope stabilizing device 200 using another form of padding material 220. As shown in FIG. 8, the filling material 220 includes a filling sheet 221 and a support frame 222 that supports the filling sheet 221. The filling sheet 221 is a strip-shaped sheet body having a predetermined width in the vertical axis direction and extending along the length direction of the horizontal axis member 212 of the legal frame member 210. The filling sheet 221 may be made of a non-woven fabric sheet. The non-woven fabric absorbs moisture but does not allow surface water to pass at the same flow rate. On the other hand, the support frame 222 is made of a net-like body integrally formed of synthetic resin. Since the support frame 222 is formed as a so-called "non-knitted net" integrally molded with synthetic resin, it has higher strength and durability than a net formed by knitting a wire rod. This net is also called a Netron® sheet.

As shown in FIG. 9, the support frame 222 is bent in two, and the filling sheet 221 is sandwiched between them to support the filling sheet 221. The support frame 222 may be fixed to the slope member 210 or the slope 21. On the other hand, the filling sheet 221 is fixed to the slope 21 by an anchor or the like. The filling sheet 221 is in contact with the ground surface and covers the outer surface of the horizontal shaft member 212 from the upper side in the inclined direction of the slope 21. As a result, the gap S between the legal frame material 210 and the ground surface is not exposed to the outside, but is covered with the filling sheet 221 to ensure that the gap S that can serve as a passage for surface water is closed. Further, the filling material 220 is installed so as to have a flat portion 223 on the upper surface. The flat portion 223 is a substantially horizontal plane facing upward in the vertical direction. That is, the flat portion 223 functions to reduce the average gradient of the slope 21 and reduce the flow velocity of the surface water flowing on the ground surface.

Therefore, the legal frame structure 20 and the slope stabilizing device 200 of the present embodiment make it possible for the legal frame material 210 to more reliably exert the effect of dispersing surface water and the effect of reducing the flow velocity, as in the above embodiment. As a result, the runoff of earth and sand on the slope 20 can be effectively suppressed.

The present invention is not limited to the plurality of examples described above, and can be carried out in various embodiments as long as it belongs to the technical scope of the present invention.

10 Legal frame structure 11 Slope 100 Slope stabilizer 110 Legal frame material 111 Vertical axis material 112 Horizontal shaft material 120 Filling material 121 Filling body 122 Bag body 123 Flat part 130 Legal frame material fitting 131 Sheet body 132 Gripping part 133 Connection 134 Fixed part 135 Fastener

Claims (8)

Multiple rod-shaped frame materials installed on the slope and assembled in a grid pattern,
Each lattice made of the legal frame material is provided with a padding material which is installed so as to fill a gap between the legal frame material and the ground surface from the upper side in the inclination direction and has flexibility so as to be flexible and deformable. A slope stabilizer characterized by. The plurality of method frame members are composed of a vertical axis member installed along the inclination direction and a horizontal axis member installed along a direction orthogonal to the inclination direction, and the padding material is the horizontal axis member. The slope stabilizing device according to claim 1, wherein the device is arranged in contact with a surface facing upward in an inclined direction. The slope stabilizing device according to claim 1 or 2, wherein the padding material includes a particulate filler and a tubular bag containing the filler. The filler is composed of particles having an average particle size of less than 1 cm, and is composed of chemical fibers, urethane resin, resin crushed material, earth and sand improving material, organic soil material, locally generated soil, wood material, growth base material, and a combination thereof. The slope stabilizer according to claim 3, wherein the slope stabilizer is selected. The slope stabilizer according to claim 3 or 4, wherein the bag has a rooting property that allows the root system of a plant to pass through. The filler is a growth base material and
The bag body
A bag-shaped or tubular first layer and
The seeds attached to the outer surface of the first layer and
A second layer covering the entire outer surface of the first layer is provided so as to sandwich the seed with the first layer.
The first layer has a non-hydrolyzable property capable of retaining the growth base material inside, and has a rooting property that allows roots grown from the seed to pass through.
3. The second layer is composed of a corrosive, degradable or hydrolyzable sheet, and has a sprouting property that allows the buds of vegetation plants germinated from the seeds to pass through with time. The slope stabilizer according to any one of 5 to 5. The slope stabilizer according to any one of claims 1 to 6 is installed on a slope, and a flat portion is formed on the upper surface of the padding material of the slope stabilizer. The legal frame structure. The process of assembling multiple rod-shaped frame materials in a grid pattern and installing them on the slope,
A step of installing a plurality of padding materials having flexibility that can be flexed and deformed so as to fill the space between the method frame material and the ground surface from the upper side in the inclination direction in each lattice composed of the method frame material.
A method of constructing a legal frame structure characterized by including.

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