JPH11200372A5 - - Google Patents

Description

[0006]
[Example]
An embodiment of the present invention will now be described with reference to the drawings. In the figure, reference numeral 1 denotes a slope of natural ground, 2 denotes a soil bag to be placed on the slope, and 3 denotes a horizontal mesh belt made of high-density polyethylene. The mesh has a square count of a and b = 25.0 mm, the width of the wires forming the mesh is approximately c and d = 3.7 mm, and the belt has a total length L = 1.0 m and a width w = 15.0 cm. The mesh belt has a yield strength of 770 kgf/m or more in both the vertical and horizontal directions. The mesh belt is not woven with wires, but is a sheet of medium-low pressure polyethylene with numerous continuous holes. Reference numerals 4 and 4' denote anchor pins for fastening both ends _3-1 and _3-1 ' of the mesh belt 3, with heads _4-1 and _4-1 ' bent into a hook shape. Reference numeral 5 denotes a rib net made of expanded metal, with the left and right lateral sides of the front curved to form integral wing pieces ₅₁ and ₅₁ ', forming an opening at the top of the front, forming an embracing frame shape. To achieve lighter weight than conventional rib nets, the rib net is 1.6 mm thick and the diamond-shaped mesh width (the width of the filaments) is approximately 2.0 mm. Reference numeral 6 denotes a box-shaped spacer inserted in the space S formed between the surface ₂₁ of the soil packing bag and the inner surface of the rib net 5. It consists of a horizontally elongated rectangular frame ₆₁ , vertical ribs ₆₂ , multiple horizontal ribs ₆₃ , and horizontal fins ₆₃ '. Multiple hooks ₆₄ are provided on the horizontal upper edge of the horizontally elongated rectangular frame 61 _that forms the opening. The spacer is molded from synthetic resin and measures 16.0 cm long, 10.0 mm short, and 35.0 mm high. 7 indicates a wire mesh stretched along the slope at an appropriate interval G, 8 indicates a mortar sprayed layer or a concrete sprayed layer formed by spraying spray material onto the wire mesh, 9 indicates a planting opening formed on the top of the rib net, and 10 indicates a drainage pipe whose base is in contact with the bottom of the soil bag 2 and whose tip is directed toward the surface of the sprayed layer 8.