JP4368462B2 - Shelf for plant growth base material - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a holding shelf for holding a growth base material which becomes plant soil on the slope for greening the slope, and more specifically, a bedrock or a mortar sprayer, a concrete sprayer, a concrete tensioner It is related with the holding shelf applied to the hard slope which consists of a structure which covers the slope formed by the slope protection work like.
[0002]
[Prior art]
Conventionally, for the greening of slopes with poor plant conditions, such as rocky cut slopes and mortar spray surfaces, a holding shelf is installed on the slope, and plant growth base materials are placed on the holding shelf. Has been proposed (Japanese Patent Laid-Open No. 10-245848).
[0003]
The conventional holding shelf includes a plurality of support members having a U-shape as a whole, and a net that is supported by these support members and defines a holding surface of the growth base material. The support members are arranged in the horizontal direction at intervals, and a pair of free ends thereof are embedded in the natural ground.
[0004]
[Problems to be solved by the invention]
By the way, since the slope formed by the rock cut slope to which the holding shelf is applied, the slope defined by the mortar layer sprayed on the slope, etc. are hard, this is used for the installation of the support member. It is actually difficult to type in. Therefore, it is conceivable to make a pair of holes in the inclined surface and insert both ends of the support member into these holes, but it is also possible to make a pair of holes equal to the mutual distance between both free ends of the support member. It is also difficult in practice.
[0005]
Accordingly, an object of the present invention is to provide a holding shelf for plant growth base material that can be easily installed on a hard slope.
[0006]
[Means for Solving the Problems]
The present invention is a holding shelf for holding plant growth base material on a hard slope defined by a rock mass or a slope protection structure, and is arranged horizontally spaced apart from each other and partly exposed. a support member of a plurality of bar-like embedded in the natural ground as said is supported on the exposed portion of the support member and Ri Do and a water-permeable sheet which defines the holding surface of the growth base material, said sheet, Provided is a shelf for growing a growth base material having a lower end perpendicular to the slope that is in contact with the slope .
[0007]
The support member preferably has a root portion extending perpendicularly to the slope, and the exposed portion is connected to the root portion and extends perpendicularly to the slope; And a second portion extending vertically upward from one portion.
[0008]
Operation and effect of the invention
According to the present invention, since the support members are rod-shaped, one perforation for installing each support member on a hard slope made of rock or a slope protection structure is sufficient for each support member. The operation of drilling a single hole for each support member is easier than the operation of drilling two holes with precise mutual spacing, which facilitates the installation of a holding shelf that includes a plurality of support members.
[0009]
Further, the rooting effect of the support member is enhanced by extending the support member and the part of the exposed portion (first portion) extending perpendicularly to the inclined surface. In addition, as compared with the case where the first portion is not provided, it is possible to secure a larger space for holding the growth base material, that is, a large rooting region, between the exposed portion of the support member and the slope. it can.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Referring to FIG. 1, for the greening of the slope 14 defined by the protective structure 12 on the slope 10, the growth base material 18 that becomes the soil of the plant 16 is held on the slope 14 by the holding shelf 20 of the present invention. Yes.
[0011]
The protective structure 12 is a mortar layer covering the slope 10 formed by applying slope protection such as mortar spraying, concrete spraying, concrete tensioning, etc., for weathering the slope 10 and preventing erosion. , Concrete layers, etc., which define a hard surface or hard slope 14. The protective structure 12 is provided with a plurality of small holes 22 for rooting the plant 16 and moving moisture.
[0012]
The holding shelf 20 of the present invention can be applied not only to the protective structure 12 but also to a slope (for example, a rock cut slope) formed on a rock that similarly defines a hard slope.
[0013]
The plant 16 is grown on the growth base material 18 on the holding shelf 20 by sowing, planting, or the like. The growth base material 18 is made of, for example, a mixture of soil, aggregating agent, fertilizer, etc., and a mixture of wood chips mixed in the mixture.
[0014]
The holding shelf 20 includes a plurality of rod-like support members 24 and a water-permeable sheet 26 that is supported by these support members 24 and defines a holding surface of the growth base material 18. In the illustrated example, a plurality of holding shelves 20 are arranged stepwise along the slope 14.
[0015]
The support member 24 is made of a steel member such as a round steel material, an angle steel material, or an H-shaped steel material, a plastic member, a concrete member, or the like, and has an outer shape that is bent into a U-shape.
[0016]
The plurality of support members 24 are arranged in the horizontal direction at intervals (for example, an interval of 30 cm), and are embedded in the natural ground 30 so that a part 28 thereof is exposed. The embedding of each support member 24 is performed by, for example, using a drilling machine (not shown), drilling a single hole 32 extending through the protective structure 12 and into the natural ground 30, and inserting the support member 24 into the hole. This can be done by injecting mortar into the hole. The length of the hole 32, that is, the penetration depth of the support member 24 depends on the strength of the natural ground, the consolidation strength, and the like, but can be approximately 30-50 cm.
[0017]
Preferably, a part 28 of the support member 24, that is, a root portion extends perpendicularly in the natural ground 30 with respect to the slope 14, and a portion (exposed portion) 36 including the bent portion 34 is exposed to the outside of the hole 32. Install as follows. Thereby, compared with the case where it sets to angles other than the said perpendicular | vertical, the rooting effect of the supporting member 24 can be made higher.
[0018]
Accordingly, the portion (first portion) 38 between the bent portion 34 and the root insertion portion 28 in the exposed portion 36 can extend vertically in the air with respect to the inclined surface 14. As a result, the space defined by the exposed portion 36 and the slope 14, that is, the region that can hold the growth base material 18 is larger than the case where the bent portion 34 is set and arranged so as to be positioned on the slope 14. It can be.
[0019]
Preferably, the second portion 40 that is bent and connected to the first portion 38 of the exposed portion is set to extend vertically upward.
[0020]
The number of the support members 24 can be arbitrarily determined according to the width dimension of the support shelf 20 (the length dimension in the horizontal direction that is the direction crossing the slope 14).
[0021]
The water-permeable sheet 26 is disposed on the mountain side of these support members 24. The sheet 26 is stretched in a state of being bent along the exposed portion 36 of the support member of the support member 24, and extends in a direction crossing the slope 14.
[0022]
The sheet 26 can be fixed to the exposed portion 36 of each support member 24 using, for example, a wire such as a wire, a binding band, or the like (not shown). Further, both end portions of the sheet 26 in the transverse direction of the slope 14 can be fixed to the slope 14.
[0023]
The sheet 26 supported by the support member 24 defines a holding surface of the plant growth base material 18 in cooperation with the slope 14 and forms a holding space.
[0024]
The sheet 26 has strength that can withstand the weight or lateral pressure of the growth base material 18 under the support of the support member 24, and has a property of allowing rainwater or the like to pass through, for example, a nonwoven fabric, a woven fabric, a mesh, or the like.
[0025]
In addition to the illustrated example, the sheet 26 can further cover the surface of the growth base material 18 in order to prevent the growth base material 18 from flowing out. The growth base material 18 placed on the sheet 26 may have a sandbag (not shown) packed in a bag formed using, for example, a mesh.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a holding shelf installed on a slope.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 12 Slope protection structure 14 Slope 16 Plant 18 Growth base material 20 Holding shelf 24 Support member 26 Water-permeable sheet | seat 28,36 The root insertion part and exposed part 38,40 of a support member The 1st and 2nd part of an exposed part

Claims (2)

  A holding shelf for holding plant growth base material on a hard slope consisting of bedrock or slope protection structure, which is placed in the horizontal direction and spaced apart from each other and partly exposed A plurality of rod-shaped support members embedded in the sheet, and a water-permeable sheet that is supported by the exposed portion of the support member and that defines a holding surface of the growth base material, the sheet being in contact with the slope, A holding shelf having a lower end perpendicular to the slope.   The support member includes a root portion extending perpendicularly to the slope, and an exposed portion of the support member is connected to the root portion and extends perpendicularly to the slope; The holding shelf according to claim 1, comprising: a second portion extending vertically upward from the portion.

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