JP5319462B2 - Greening protection method of natural slope using bamboo net with vegetation sheet - Google Patents

Description

  The present invention relates to a greening protection method for natural slopes using a bamboo net with a vegetation sheet.

  In recent mountain conservation works, from the viewpoint of protecting the natural environment, the restoration of the hillside that was destroyed by a disaster, or the stabilization of slopes that have been cut or embanked by the construction of forest roads, and the protection work, It is becoming common to pay attention to conservation and landscape conservation. For example, FIG. 9 is one of the protective works of a rock mine using logs. This protector is driven by piles (logs) 2 on the slope 1 of the mountainside at regular intervals in a row. It is fastened to the piles 2 and filled in the space behind the crossbar 3 to prevent the sediment from flowing out of the slope. Furthermore, a seedling 5 is vegetated on the embankment, or a seed sheet (not shown) is arranged on the back of the cross 3 to grow a plant from the gap of the cross 3 so that the natural environment and the landscape can be protected. Yes.

  The above-mentioned conventional protective work has a problem that the work is dangerous because the steel wire floats due to the contraction of the log and the fence becomes loose, the cutter teeth come into contact with the iron wire during the mowing work on the slope, or the iron wire breaks or breaks. was there. JP 2000-120073 (Patent Document 1) includes a fence-like body in which a plurality of log panel units are stacked, a fixed pile that is installed at intervals in the longitudinal direction, and is connected to the fence-like body. A wooden slope protector has been proposed that consists of anchors installed on slopes and connected to fences or fixed piles.

JP 2000-120073 A

  However, the above wooden slope protector has to lift a heavy panel unit made of logs from the bottom to the top of the slope, and the burden on the worker is very large. In addition, an anchor for stabilization is required, which increases the number of work steps. In addition, although wood is used, it is not well-developed in terms of vegetation greening.

  The present invention has been made in view of the above circumstances, and is excellent in economic efficiency and workability, can be vegetated at an early stage, and is excellent in environmental conservation, greening of natural slopes using a bamboo net with a vegetation sheet The purpose is to provide a protection method.

In order to solve the above-mentioned problems, the greening protection method for natural mountain slopes using a bamboo net with a vegetation sheet according to the present invention,
A large number of long split bamboos are sequentially connected with a plurality of strings while maintaining a predetermined gap to obtain a bamboo net, and a flexible seeded or seedless vegetation sheet is provided on the back of the bamboo net. The first step to obtain a bamboo net with a vegetation sheet by pasting, the second step to drive piles into the slope of the natural mountain at a predetermined interval in several rows across the slope of the natural mountain, and transportation to the slope of the natural mountain The bamboo net with a vegetation sheet is fixed to the horizontal direction of the split bamboo, and each split bamboo is bent and alternately one or more piles on the ground side or anti-mountain side And a third step of dropping between the piles so as to pass through and a fourth step of embedding in the space behind the bamboo net with a vegetation sheet dropped between the piles. To do.

  The greening protection method for natural slopes using the bamboo net according to the present invention is characterized in that, in the first step, the gap dimension between the split bamboos is adjusted by adjusting the number of twists of the string. And

  The greening protection method for natural slopes using a bamboo net according to the present invention is to plant a plant stock from the front side through a gap of split bamboo dropped between piles on a vegetation sheet behind it. It has a third feature that it has a fifth step.

  According to the present invention, a method for protecting greenery on a natural slope using a bamboo net is formed by excavating a U-shaped water channel groove extending in the vertical direction of the slope in a portion between horizontal rows of piles. A fourth feature is that it has a sixth step of stretching a bamboo net with a vegetation sheet on the surface.

  In the sixth step, the greening protection method for natural mountain slopes using the bamboo net according to the present invention is made of bamboo with a vegetation sheet in a manner that the direction of the split bamboo is fixed laterally on the surface of the channel for the waterway. The fifth feature is to stretch the net.

As described above, according to the greening protection method for natural mountain slopes using the bamboo net of the present invention, the following excellent effects can be obtained.
(1) The bamboo net with a vegetation sheet is lightweight and can be wound compactly and transported on a slope, and is excellent in workability.
(2) The bamboo net with a vegetation sheet can be bent and deformed, and can be easily dropped between piles, and after dropping, it is firmly integrated with the piles. In addition, skilled techniques such as connection and special techniques are not required, and construction can be performed quickly and easily, and the workability is excellent.
(3) A moderate gap is provided between the split bamboos of the bamboo net with a vegetation sheet, so it is excellent in water permeability, breathability and daylighting, and seeds germinate easily from the vegetation sheet on the back. The growth of vegetation is promoted from the gap, and early vegetation greening is achieved. Bamboo is moderately corrosive, so it can be used for vegetation greening and natural regression.
(4) Since a large amount of bamboo is used as a material for fence construction, it can greatly contribute to the effective use of bamboo resources, the reduction of abandoned bamboo forests, and is excellent in economic efficiency.

  The best mode for carrying out the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment of the present invention, in which reference numeral 1 denotes a slope of a mountainside. Hereinafter, the procedure for constructing a fence on the slope 1 (fence work) using a bamboo net with a vegetation sheet containing seeds will be described as a method for protecting the slope 1 by greening.

  First, a bamboo net with a vegetation sheet containing seeds is prepared at a production factory or the like. As shown in FIG. 2, a bamboo net 10 with a seed-containing vegetation sheet is composed of a vegetation sheet with seeds as a composite material on the back of a bamboo net 11 (length of about 2.4 m, width of about 0.6 m in the illustrated example). 12 is configured to be integrally attached with an adhesive or the like. As shown in FIG. 2 (A), the bamboo net 11 has a large number of long split bamboos 13 (10 in the example shown in the drawing) arranged in parallel at equal intervals. Each split bamboo 13 is manufactured by sequentially connecting with a string 14. A plurality of cords (4 in the illustrated example) having a predetermined length are prepared for the string 14 in accordance with the length of the split bamboo 13 (approximately 2.4 m in the illustrated example) and the number (10 in the illustrated example). 13 are connected at a plurality of locations in the longitudinal direction (four locations in the illustrated example). The split bamboo 13 may be a raw bamboo such as a Miso bamboo or a dry bamboo. The string 14 is preferably made of a chemical fiber in terms of securing strength, but is preferably made of a natural fiber such as Manila hemp, sisal hemp, palm or coconut in terms of environmental conservation. The string 14 can adjust the dimension of the gap d between the adjacent split bamboos 13 and 13 by increasing or decreasing the number of twists 14 </ b> A between the adjacent split bamboos 13 and 13.

  Next, as shown in FIG. 2 (B), a seed-containing vegetation sheet 12 is bonded to the back of the bamboo net 11 (length of about 2.4 m and width of about 0.6 m in the illustrated example) as a composite material. Paste them together. The seed-containing vegetation sheet 12 is obtained by mounting thin cotton (fertilizer, soil improvement material, etc.) in which seeds of flowering plants are mixed in a polyethylene net or non-woven sheet, and has flexibility and flexibility. A biodegradable resin net, a water-soluble paper sheet, or the like may be used. As shown in FIG. 2C, the bamboo net 10 with seed vegetation sheet produced in this way is rolled around from one side end to the other side end to form a compact state. Transport to the site from etc. If necessary, wrap in multiple units with oil paper to prevent rain.

  In parallel, as shown in FIG. 3 (A), a pile 2 for fence work is driven into the slope 1 of the local natural ground. The actual driving angle of the pile 2 is provided with a vegetable gradient (the actual construction gradient is 70 degrees, but in the drawing, it is 90 degrees with respect to the horizontal plane for convenience of explanation). The pile 2 is a log (length of about 1.5 m in the illustrated example). The piles 2 are sequentially driven into the slope 1 of the natural ground in several steps in a horizontal line from one end to the other end with a predetermined interval. This driving operation is performed in several stages at predetermined intervals in the vertical direction (vertical direction) from the lower side to the upper side of the slope 1. In this way, all the fence construction piles 2 are driven into the slope 1 (the driving amount in the illustrated example is about 0.9 m, the amount of protrusion of the pile 2 from the slope 1 is about 0.6 m, and the spacing between the piles 2) About 0.75 m).

  Next, the bamboo net 10 with the wound vegetation sheet conveyed to the site is lifted and conveyed to the position where each pile 2 on the slope 1 is driven. Since the bamboo net 10 with a vegetation sheet is lightweight and compacted in a wound shape, the slope 1 can be easily transported to a position where a predetermined pile 2 is located.

  Next, the bamboo net 10 with the wound vegetation sheet is returned to the flat plate shape at the position where the pile 2 on the slope 1 is driven. And as shown in FIG.3 (B) and FIG. 4, the bamboo net | network 10 with a vegetation sheet | seat is dropped between the piles 2 arranged adjacent to the horizontal direction Y. As shown in FIG. The bamboo net 10 with a vegetation sheet fixes the direction (longitudinal direction) of each split bamboo 13 in the lateral direction Y, and uses the curvature of each split bamboo 13 as shown in the plan view of FIG. Each pile 13 is curved, and the piles 2 arranged in the horizontal direction (three piles 2 in the illustrated example) are alternately placed on the ground side of the piles 2 and the ground. Drop through the piles 2 from above so as to pass the mountain side. After dropping the bamboo mesh 10 with a vegetation sheet between the piles 2, the integration of the bamboo mesh 10 with the vegetation sheet 2 with the piles 2 is enhanced by a restoring force for returning to the original shape. Thereby, the bamboo net | network 10 with a vegetation sheet | seat can be fixed to the pile 2 easily, and is freed from the conventional complicated operation | work currently bound to the pile 2 with the iron wire etc. In addition, the bamboo nets 10 with the vegetation sheet dropped between the piles 2 are abutted with each other or provided with overlapping portions having a predetermined width.

  Next, when all the bamboo nets with vegetation sheets 10 are dropped between the piles 2 from one end to the other end in the lateral direction Y, in the back space S of each pile 2 and the bamboo net 10 with vegetation sheets, As shown in FIG. 3C, the embankment 6 is provided up to the protruding height of the pile 2. By providing the embankment 6 behind the pile 2 protruding from the slope 1 and the bamboo net 10 with a vegetation sheet, the slope 1 is constructed in a staircase shape. And as shown in FIG.3 (D), each bank 6 is planted with seedlings 5, such as a cucumber.

  By the above construction procedure, the fence 7 using the pile 2 and the bamboo net 10 with the vegetation sheet is constructed on the slope 1. FIG. 1 shows a cross section of the fence 7 constructed on the slope 1.

  After the construction, the fence 7 has seeds germinated from the seed vegetation sheet 12 of the bamboo net 10 with the vegetation sheet fixed to the pile 2, and from each gap d of the bamboo net 11 as shown in FIG. The flower 15 grows. At the same time, the seedling 5 on the embankment 6 grows, and along with the flowers 15 growing from the gaps d of the bamboo net 11, early greening of the entire slope 1 is achieved, and earth retaining of the slope 1 is also achieved.

  Since the bamboo net 10 with a vegetation sheet is lightweight and can be made compact in a wound form, it is advantageous for transportation from the production factory to the site and for lifting and conveying the slope 1 from the site to a predetermined height. Moreover, in terms of workability, using the curvature of the bamboo net 10 with seeded vegetation sheet, the piles alternately alternate in order from the natural mountain side, the anti-natural mountain side, and the natural mountain side with respect to the pile 2 adjacent in the horizontal direction. Since it can be fixed to the pile 2 with a simple operation of dropping between the two, no special skills or special skills such as connection are required, so it can be constructed quickly and easily, and it is advantageous in terms of workability. It is.

  Furthermore, since the bamboo net 10 with a vegetation sheet is excellent in water permeability and moderate corrosivity, it is suitable for realizing a more natural vegetation recovery for natural ground. Moreover, since a large amount of bamboo is used as a material for fence work, it can greatly contribute to the effective use of bamboo resources and the reduction of abandoned bamboo forest.

  FIG. 5 shows a second embodiment of the present invention, in which a channel 8 having a substantially U-shaped cross section extending in the vertical direction is provided in a part of a fence 7 constructed on the slope 1. The water channel 8 collects rainwater and the like that have fallen on the natural ground and flows down in the vertical direction.

  The construction of the water channel 8 uses a bamboo net 16 with a vegetation sheet containing seeds. As in the first embodiment, the bamboo net 16 with a vegetation sheet containing seeds has seeds on the back of a bamboo net 11 ′ in which a large number of split bamboos 13 are arranged vertically and joined together by a plurality of strings 14. The entering vegetation sheet 12 'is configured to be integrally attached with an adhesive or the like. First, a U-shaped groove 17 extending in the vertical direction is excavated in a part of the fence 7 constructed on the slope 1, and the longitudinal direction of the split bamboo 13 of the bamboo net 11 'is aligned with the groove direction so that the bamboo net with a vegetation sheet is formed. 16 is curvedly arranged in the U-shaped groove 17, and the central portion in the U-shaped groove 17 and both sides extending from the U-shaped groove 17 to the left and right of the bamboo net 16 with the vegetation sheet are fixed to the slope 1 with the piles 18.

  After construction, in the water channel 8, seeds germinate from the seed-containing vegetation sheet 12 'of the bamboo net 16 with a vegetation sheet, and a flower grows from each gap d' of the bamboo net 11 '. Early greening of the entire slope 1 is achieved along with the flowers and the like that grow from the bamboo net 10 with a seed-containing vegetation sheet constructed on the fence 7.

  FIG. 6 shows a third embodiment of the present invention. In this embodiment, a bamboo net 16 ′ with a vegetation sheet in which the longitudinal direction of the split bamboo 13 is fixed to the water channel 8 in a lateral direction perpendicular to the groove direction. Is stretched. In this case, the split bamboo 13 is bent into a U shape in accordance with the shape of the U groove 17 and fixed to the U groove 17 with the pile 18. Since the longitudinal direction of the split bamboo 13 is fixed to the direction perpendicular to the flow direction of the water channel 8, each split bamboo 13 exerts the action of gradually suppressing the flow rate of water, such as during rain, and also contains seeds. It is possible to prevent the seeds contained in the vegetation sheet 12 'from being washed away with vigorous water. Therefore, early vegetation can be effectively achieved in the water channel 8.

  FIG. 7 shows a fourth embodiment of the present invention. In the figure, the same members as those of the above-mentioned embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  In the present embodiment, as shown in FIG. 7A, a step 9 is provided stepwise on the slope 1 '(the height of the step 9 in the illustrated example is about 0.6 m). Then, the pile 2 is driven in while being located behind the upper surface 9A of each step 9 and leaving a small back space S 'between the front surface 9B of the upper step 9. The pile 2 is driven sequentially from one end to the other end with a predetermined interval in the lateral direction of the slope 1 ′ (the driving amount in the illustrated example is about 0.9 m, the amount of protrusion of the pile 2 from the slope 1 ′) About 0.6 m, spacing between piles 2 is about 0.75 m).

  Next, in the same manner as in the above-described embodiment, the bamboo net 20 with seedless vegetation sheet is applied to the pile 2 adjacent in the lateral direction, while the split bamboo 13 is curved, while the natural mountain side, the anti-natural mountain side, the ground The bamboo net 20 with the vegetation sheet without seeds is fixed to the adjacent pile 3 in the lateral direction by dropping from above so as to pass between the piles 2 alternately in order with the mountain side. Thereafter, as shown in FIGS. 7B to 7C, the soil is buried back in the space S ′ behind the bamboo net 20 with the vegetation sheet. The bamboo net 20 with a vegetation sheet is obtained by adhering a seedless vegetation sheet 22 with an adhesive or the like to the back surface of the bamboo net 21 made of split bamboo 13 and strings used in the above embodiment. Examples of the seedless vegetation sheet 22 include an insulator mat.

  Next, the seedlings 5 are vegetated on the upper surface of each stage 9, and the plant stock 23 is vegetated on the seedless vegetation sheet 22 through the gap from the front of the bamboo mesh 21, as shown in FIG. . Susuki and cocoons are used as the plant stock 23. The plant stock 23 can be easily rooted in the seedless vegetation sheet 22 on the back side of the bamboo net 21, and the role of the seedless vegetation sheet 22 to prevent soil behind from spilling through the gaps in the bamboo net 21. do.

  After the construction, the plant stock 23 grows from each gap of the bamboo net 21, and the seedling 5 on the embankment 6 also grows at the same time. Figured.

  The bamboo net used in the above embodiment can also be used as a constituent material of the windbreak fence. FIG. 8 shows an example of a windbreak fence.

  The windbreak fence 30 shown in FIG. 8 has wooden, steel, and plastic (pseudo-tree specification) pillars 31 standing in a horizontal row at predetermined intervals on the ground of a coastal area or upland field, and the horizontal bars 32 are vertically moved on each pillar 31. The two rows are fixed with bolts or the like, and a bamboo net 33 is attached to the cross board 32 with covered iron wire or the like. The bamboo net 33 is formed by sequentially connecting a large number of split bamboos 34 with strings 35.

  Thus, according to the present invention, a bamboo net with a vegetation sheet is used, and a fence or earth retaining work can be easily constructed on a slope of a natural mountain without requiring skilled or special techniques, and early vegetation greening can be achieved. It is possible to provide a protection method that is excellent in plan, economy and workability and excellent in environmental conservation. It can also be applied as a windbreak fence.

  The slope greening protection method using a bamboo net with a vegetation sheet according to the present invention can be widely used as a method for fence construction, earth retaining work, etc. of a natural mountain slope.

Sectional drawing which shows the example of the fence construction constructed | assembled to the slope by the construction method which concerns on this invention, (A) is a front view of a bamboo net used in the method of the present invention, (B) is a side view of a bamboo net with a vegetation sheet, (C) is a side view in which the bamboo net with a vegetation sheet is wound, (A) thru | or (D) is explanatory drawing which shows the procedure which constructs a fence work on the slope of a natural mountain by the construction method of this invention, (A) is a plan view showing a state in which a bamboo net with a vegetation sheet is dropped on a horizontal row of piles driven into a slope, (B) is a front view thereof, The 2nd Embodiment of this invention is shown, (A) is a front view which shows the state which looked at the example which provided the water channel in a part of fence work shown in FIG. AA arrow sectional view in (A), The 3rd Embodiment of this invention is shown, (A) is a front view which shows the state which looked at the example which provided the water channel in a part of fence work shown in FIG. BB sectional view taken on the line in (A), The 4th Embodiment of this invention is shown, (A) thru | or (D) is explanatory drawing which shows the procedure which constructs a fence on the slope of a natural ground by the construction method of this invention, It shows an application example of a bamboo net with a vegetation sheet used in the present invention, a front view showing an example of a windbreak fence, It is sectional drawing which shows the conventional fence work.

1,1 'slope 2 pile (log)
3,32 Yokogi 4 Iron wire 5 Sapling 6 Filling 7 Fence 8 Waterway 9 steps 9A Upper surface 9B Front surface 10, 16, 20 Bamboo net with vegetation sheet 11, 11 ', 21, 33 Bamboo net 12, 12' Vegetation sheet with seeds 13, 34 Split bamboo 14, 35 String 15 Flower 17 U-shaped groove 18 Pile 22 Seedless vegetation sheet 23 Plant stock 30 Windbreak fence 31 Pillar d, d 'Clearance between split bamboo S, S' Behind space

Claims (5)

  A large number of long split bamboos are sequentially connected with a plurality of strings while maintaining a predetermined gap to obtain a bamboo net, and a flexible seeded or seedless vegetation sheet is provided on the back of the bamboo net. The first step to obtain a bamboo net with a vegetation sheet by pasting, the second step to drive piles into the slope of the natural mountain at a predetermined interval in several rows across the slope of the natural mountain, and transportation to the slope of the natural mountain The bamboo net with a vegetation sheet is fixed to the horizontal direction of the split bamboo, and each split bamboo is bent and alternately one or more piles on the ground side or anti-mountain side A vegetation sheet comprising: a third step of dropping between the piles so as to pass through; and a fourth step of embedding in the space behind the bamboo net with the vegetation sheet dropped between the piles. A greening protection method for natural slopes using a bamboo net with a paddle.   The greening protection of natural mountain slopes using a bamboo net with a vegetation sheet according to claim 1, characterized in that, in the first step, the gap size between the split bamboos is adjusted by adjusting the number of twists of the string. Construction method.   The method according to claim 1 or 2, further comprising a fifth step of planting a plant stock from a front side through a gap between split bamboos dropped between piles on a vegetation sheet behind the plant. Greening protection method for natural mountain slopes using bamboo net with vegetation sheet as described.   A sixth step of excavating a U-shaped waterway groove extending in the vertical direction of the slope in a portion between the horizontal rows of piles and extending a bamboo net with a vegetation sheet on the surface of the waterway groove; The greening protection method of a natural slope using the bamboo net with a vegetation sheet of Claim 1 thru | or 3 characterized by the above-mentioned.   In the sixth step, a bamboo net with a vegetation sheet is stretched over the surface of the channel for waterway so as to fix the direction of the split bamboo in the lateral direction. A greening protection method for natural slopes using bamboo nets.

Images