JPH073747A - Concrete block for boulder levee - Google Patents

Abstract

PURPOSE:To easily install a concrete block for a boulder levee by providing a frame in part of or around a bottom plate, forming a hollow portion in part of the frame or in a separately assembled frame, and providing holes in part of a projecting portion forming the hollow portion which communicate with the outside. CONSTITUTION:A frame 2 which is curved at its center is provided around a flat bottom plate 1 to form a hollow portion 3 between the frame 2 and the back side of the plate 1. Oblong holes 4 communicating with the outside are provided in three positions of a projecting portion 5 forming the hollow portion 3, so as to form a concrete block for a boulder levee. The upper side of the inner bottom plate 1 of the block is filled with stones and sand and the overall surface of the block is covered with a wire gauze 6, which is then held in position by a mesh holding fitting 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block useful for constructing a multi-natural cobblestone revetment method using natural stone or the like.

[0002]

2. Description of the Related Art The revetment method using boulders is a method of laying the boulders on the slope by fixing means such as simply arranging the boulders on the slope and fixing them with cement. The method of arranging regularly and packing the stones in the compartment surrounded by each frame material is used.

[0003]

Among these conventional cobblestone revetment construction methods, the former construction method of laying cobblestones has a problem that it takes too much time and effort. In addition, since the frame material itself is metal, the method of using a metal frame material has a feeling of strangeness when used as a multi-natural type, and there is a problem that it takes time and effort to tighten the bolts and nuts in the frame work. is there.

The present invention is intended to provide a concrete block which can be easily installed and can easily form a multi-natural cobblestone revetment by filling it with stone or earth and sand and also has a fish nest function. .

[0005]

The present invention is a flat plate bottom plate 1
A frame 2 is provided in a part of or around the frame, and a part of the frame or a separately assembled frame is used as a cavity 3, and a portion of a convex portion 5 forming the cavity communicates with the outside. It is a concrete block for boulder revetment. The frame 2 attached to the bottom plate 1 may be integrally molded at the time of molding, or may be separately molded and then assembled and integrated.

In this concrete block, the upper surface of the bottom slab is filled with stone, earth and sand, or a mixture thereof. In addition, a mesh such as a wire mesh may be fixed to the surface of the block to cover the entire surface. Further, the cavity 3 is filled with vegetation soil 13.

[0007]

[Function] Since a frame 2 is provided in a part of or around the bottom slab 1 and a part of the frame or a separately assembled frame is used as a hollow portion 3, this concrete block can be laid on a slope or a riverbed. Then, except for the portion forming the hollow portion 3 inside the frame 2, it is a boulder revetment when filled with stones and earth and sand. Further, since the hole 4 communicating with the outside is provided in a part of the convex shape forming the hollow portion 3, organisms such as fish can enter and leave the hollow portion when the installation place is underwater.

The block is filled with stones, and the whole surface is fixed with a mesh such as a wire mesh so that it can function as a boulder revetment only by installing it at the construction site. In addition, the wire netting has a protective effect against boulders and the like against water flow. Furthermore, when the cavity 3 is filled with vegetation soil 13, trees can be planted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view of a concrete block of the present invention used in a cobblestone revetment method, FIG. 2 is a plan view, FIG. 3 is a front view, FIG. 4 is a right side view, and FIG. 5 is a sectional view taken along line AA. 6 is a perspective view showing a state after construction. Length about 2000 mm, width about 10
This concrete block having a thickness of 00 mm and a thickness of about 250 mm is provided with a frame 2 around a plate-shaped bottom slab 1. The frame is bent at the center to form a cavity 3 between the frame and the back surface. A portion forming the hollow portion is formed as a convex portion 5 having a flat surface, and oblong holes 4 communicating with the outside are provided at three portions in the portion. Then, a concavo-convex joint is formed before and after the block.

The top surface of the inner bottom slab of such a concrete block is filled with stones and sand. From above, the entire surface of the block is covered with a wire mesh 6. To fix the wire net 6, the frame 2
Anchor bolts 9 with attachment holes are attached to the ends of the connecting bolts 8 inserted into the connecting holes 7 provided in, and the mesh holding metal fittings 10 are screwed together with the wire mesh 6 to the threaded portions of the anchor bolts 9. is doing.

FIG. 6 shows an example in which such concrete blocks are sequentially arranged on the slope of the revetment from below. In the portion arranged in the water, the hollow portion 3 is a fish nest portion. Waterweed grows in the area where the cobblestone and the sand are clogged. The cavities 3 are made available to terrestrial organisms above the water surface. In particular, when this area is filled with earth and sand 13, land-based plants grow in the area where the earth and sand 13 is clogged. There is a hole in the bottom of the block so it will not rot.

FIG. 7 shows a concrete block of the above-mentioned first embodiment, which is divided by a convex portion 5 forming a flat portion. One of the divided blocks 11a has a portion for filling stone and sand on the upper surface of the slab and a flat portion for providing an oblong hole communicating with the outside, and the other block has stone and sand on the upper surface of the slab. Is almost U-shaped. These two pieces have the same structure as the concrete block of the first embodiment. The front and rear joints in this example are concave and convex joints on one block 11a and on the other block 11b.

FIG. 8 is a perspective view of a concrete block for cobblestone revetment of the third embodiment. The shape of the hole 4 provided in the convex portion 5 forming the cavity 3 is different from that of the first embodiment. That is, it is a hole that is largely cut open in both the upper surface direction and the direction in which the cobblestone is filled. The point that a connecting hole 7 is provided for connecting the adjacent block by bolting and the point that a concavo-convex joint is provided is the same as in FIG.

In the example shown in FIG. 9, unlike the examples described above, the convex portions 5 forming the cavity 3 are provided at two positions in the direction perpendicular to the longitudinal direction of the block. The cavity 3 communicates with an inlet 12 for fish or the like on the front side. Although there is no frame on the three sides, this is a concrete block for cobblestone revetment similar to the other examples described above by fitting and combining frame members of separate members.

[0015]

Since the concrete block of the present invention has the above-mentioned structure, a multi-natural cobblestone revetment can be easily formed by filling it with stones or earth and sand after installation by easy installation work. Moreover, it has excellent function as a fish nest in rivers and provides habitat for vegetation and living things even on land.

[Brief description of drawings]

FIG. 1 is a perspective view of a concrete block according to a first embodiment of the present invention used in a cobblestone revetment method.

FIG. 2 is a plan view of the concrete block.

FIG. 3 is a front view of the concrete block.

FIG. 4 is an enlarged right side view of the concrete block.

FIG. 5 is an enlarged AA sectional view of the concrete block in FIG. 2.

FIG. 6 is a cross-sectional view showing a state after the construction of the concrete block.

FIG. 7 is a cross-sectional view showing a state after construction of the concrete block of the second embodiment used in the cobblestone revetment method.

FIG. 8 is a perspective view of a concrete block according to the third embodiment.

FIG. 9 is a perspective view of a concrete block according to the fourth embodiment.

[Explanation of symbols]

 1 Bottom plate 2 Frame 3 Cavity 4 Hole 5 Convex 6 Wire mesh 7 Connecting hole 10 Mesh retainer

Claims (4)

[Claims] 1. A frame 2 is provided in a part of or around a plate-shaped bottom plate 1, and a cavity 3 is provided in a part of the frame or in a separately assembled frame.
And a hole 4 communicating with the outside is provided in a part of the convex portion 5 forming the hollow portion of the concrete block for boulder revetment. 2. A concrete block for a cobblestone revetment, wherein the top surface of the bottom slab according to claim 1 is filled with stone, earth or sand or a mixture thereof. 3. A concrete block for a cobblestone revetment, characterized in that a mesh such as a wire mesh is fixed to the surface of the block according to claim 2 to cover the entire surface. 4. The vegetation soil 13 in the cavity 3 according to claim 1.
Concrete blocks for cobblestone revetments, which are filled with.