JPH0444070Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a fish reef revetment block that can protect the shores of rivers, lakes, the sea, etc. to prevent water damage, and can also be used as a fish reef.

<Conventional Technology> Traditionally, banks have been constructed by laying blocks around rivers, irrigation canals, the sea, lakes, etc. to prevent water damage.

The above-mentioned blocks are usually formed with a flat surface to avoid increasing water flow resistance, but when such blocks are installed, the adhesion and inhabitation of algae and aquatic plants are inhibited, making it impossible for fish to inhabit. , the destruction of nature progresses.

On the other hand, as a fish reef block having recesses on its surface to slow down water flow, there is one proposed by the present applicant and described in Japanese Utility Model Application No. 63-14624.

The above-mentioned block has a specially shaped recess formed on the surface. It is a gradual continuation of the area.

The structure of this concave portion can slow down the water flow, and allow algae and aquatic plants to attach and live there, making it useful for fish reefs.

<Problems to be solved by the invention> However, the above-mentioned blocks are not sufficient as fish reefs, and there has been a desire for blocks that provide an environment where algae and aquatic plants can attach and inhabit even more.

<Means for Solving the Problems> The present invention has been proposed in view of the above, and includes vertical reinforcing bar insertion holes drilled on the left and right sides at the front side in the middle of the block body in the thickness direction. A horizontal hole is drilled on the rear side in the middle of the thickness direction so as not to intersect the reinforcing bar insertion hole, and a vertical groove is formed on the left and right side edges of the back side of the block body at the tip edge. This invention relates to a fish reef block provided with supporting pieces projecting laterally.

<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.

The fish reef revetment block of the present invention has a substantially rectangular parallelepiped-shaped block main body 1 with
A protruding portion 3 having a semicircular cross section is formed in the lateral direction, and a groove portion 5 having a semicircular arc cross section is formed on the lower surface portion 4 so as to coincide with the protruding portion 3 .

Then, on the front side of the block main body 1 in the middle in the thickness direction, longitudinal reinforcing bar insertion holes 6, 6 penetrating from the upper surface part 2 to the lower surface part 4 are bored on the left and right.
In the embodiment shown in FIGS. 3 to 3, a hole is formed so as to penetrate from the protruding portion 3 of the upper surface portion 2 to the groove portion 5 of the lower surface portion 4. The above-mentioned left and right reinforcing bar insertion holes 6 have an elliptical cross section, and the width becomes gradually narrower from the upper end to the lower end.

Then, a lateral through hole 7 is opened in the middle of the thickness direction of the block main body 1 on the rear side so as not to intersect with the above-mentioned reinforcing bar insertion hole 6.

Furthermore, support pieces 9, 9 projecting outward are provided on the left and right side edges of the back surface portion 8 of the block body 1.

The support piece 9 described above has a tapered shape that becomes gradually thinner toward the tip, and a vertical groove 10 having a semicircular cross section is formed at the tip edge.

In order to construct a revetment wall using the blocks described above, a foot protection block 12 with vertical reinforcing bars 11 of a certain length extending upward is placed at the bottom of the river, and the upper surface of the foot protection block 12 is A footing block 13 inserted through the vertical reinforcing bar 11 is installed.

Next, the block bodies 1 are installed in parallel in the horizontal direction on the upper surface of the above-mentioned footing block 13 so that the vertical reinforcing bars 13 are inserted into the reinforcing bar insertion holes 6, and the tips of the supporting pieces 9 of the adjacent block bodies 1, 1 are installed. are brought into contact with each other, and filling concrete is filled between the vertical grooves 10 and 10 and fixed. Since the block bodies 1 that are adjacent to each other on the left and right are arranged side by side with their supporting pieces 9 butted against each other, there is no continuous flat surface part in the horizontal direction, and there is a vertical space 14 on the front side of both supporting pieces 9. is configured.

Since the block bodies 1 are installed in a stacked manner above the rows of block bodies 1 mentioned above,
The vertical space 14 described above is located at different positions in the upper and lower block rows. Furthermore, the through holes 7 of the block main body 1 described above are opened in each of the spaces 14.

The above-mentioned block body 1 is mainly installed only in the area that is in contact with river water, and ordinary blocks 15 are stacked above the block body 1, and the reinforcing bars are inserted through the reinforcing bar insertion hole of the upper end block. The reinforcement concrete is filled to fill the reinforcing bar insertion area of each block to form a block wall for the seawall.

<Effects of the invention> In summary, according to the invention, vertical reinforcement insertion holes are drilled left and right on the front side of the block body in the middle of the thickness direction, and vertical reinforcing bars are drilled in the middle of the block body in the thickness direction. A horizontal through hole is drilled on the rear side so as not to intersect with the reinforcing bar insertion hole, and support pieces with vertical grooves formed on the tip edges are installed horizontally on the left and right edges of the back surface of the block body. Since it is provided in a protruding manner, a revetment wall for a river or the like constructed using this block body has a vertical space created by abutting the support pieces of the left and right block bodies, and a block communicating with this space. Inside the holes in the main body, the water flow is gentle, does not stagnate, and has a heat-retaining effect, so algae and aquatic plants can adhere well to it, and it is an excellent breeding environment for fish, making it a good fish reef. . In addition, since the vertical reinforcing holes are formed in front of the horizontal holes, regular blocks can be stacked continuously in front of the block body in areas that are not in contact with river water. , Extremely uneven parts do not occur on the surface of the seawall. In addition, the left and right block bodies can be constructed extremely strongly by butting the support pieces together and filling the vertical grooves with filler concrete, so they will not collapse or crumble due to water flow, and will withstand natural phenomena over long periods of time. It has sufficient durability and is of high practical value.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a partially cutaway plan view, and Fig. 3 is a partially cutaway plan view.
The figure is a vertical cross-sectional view taken along line ~ in Figure 2, Figure 4 is a front view with a part of the seawall cut out, and Figure 5 is a vertical cross-sectional view taken along the line ~ in Figure 2.
FIG. 6 is a longitudinal cross-sectional view taken along the line from FIG. 6 to a perspective view of a part of the seawall. 1 is a block body, 6 is a reinforcing bar insertion hole, 7 is a through hole, 9 is a support piece, and 14 is a space.

Claims (1)

[Scope of utility model registration request] Vertical reinforcing bar insertion holes are drilled on the left and right in the front part of the block body in the thickness direction, and horizontal reinforcing bar insertion holes are drilled in the rear part of the block body partway in the thickness direction so as not to cross the reinforcing bar insertion holes. A block for a fish reef, which is provided with a through hole in the direction, and support pieces having vertical grooves formed at the tip edges thereof are provided on the left and right side edges of the back surface of the block body so as to protrude laterally.