JP2547295Y2 - Underground water storage tank - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground water storage tank composed of a combination of concrete blocks.

[0002]

2. Description of the Related Art A conventionally known underground water tank is constructed by connecting box culverts. The box culvert has a thick side wall. Therefore, when two box culverts are connected to each other, the thickness of the side wall is doubled, the width of the water tank is excessively large, and the location is uneconomical. Also,
Since it is a box culvert, it is heavy and must be constructed using heavy machinery, which involves various difficulties.

[0003]

SUMMARY OF THE INVENTION The present invention eliminates the disadvantages of the above-mentioned known water tank, reduces the construction width and achieves a lighter weight. It is to provide a water tank.

[0004]

According to the present invention, there is provided an underground water storage tank comprising a combination of concrete blocks, wherein the left side wall has a thickness enough to withstand earth pressure, and the right side wall is formed by the left side wall. It has an opening that is thinner than that of the concrete block and allows water to flow between the adjacent concrete blocks, and has an air hole at the upper end so that air can flow between the adjacent concrete blocks. And a concrete block having a bolt fastening hole which enables connection between concrete blocks, a concrete block having a thin left and right side wall, an opening, an air hole and a bolt fastening hole, a concrete block A concrete block with openings, air holes and bolt fastening holes formed corresponding to Only the concrete block is arranged in parallel with the other side of the concrete block, each side wall is fastened with bolts, and a predetermined number of block structures integrally formed in this way are arranged in the length direction and each block. The problem is solved by tying the structure together.

BRIEF DESCRIPTION OF THE DRAWINGS The invention is described below with reference to an embodiment illustrated in the accompanying drawings.

[0006]

1 shows a concrete block A as an assembly unit of an underground water storage tank according to the present invention, and FIG. 2 shows a front view of the concrete block A in this case. As is clear from this figure, the left side wall L of this concrete block is formed to be thick to withstand the earth pressure, and the right side wall R is formed to be thin compared to this (FIG. 7). reference). Further, the concrete block A is provided with an opening 1 so that water can flow between adjacent concrete blocks. Above the opening 1, air can flow between the adjacent concrete blocks. Air holes 2 are formed. The concrete block A is provided with a number of fastening holes 3 at appropriate intervals on the side wall in order to join with the adjacent concrete block.

The concrete block A is an endmost concrete block when many concrete blocks are joined, and the thick side wall portion directly contacts the ground.
On the other hand, other concrete blocks connected to this are shown in FIG.
As shown in the assembly front view of the concrete block A shown in FIG.

FIG. 3 and FIG. 4 show a concrete block B. Like the concrete block A, the concrete block B has openings 4, air holes 5, and binding holes 6.
It has. In this respect, it is exactly the same as the concrete block A. However, this concrete block B is formed such that the thickness of the side wall is also thin on both side surfaces. As shown in FIG. 7, the concrete block B is used as an intermediate concrete block, and a plurality of concrete blocks B are connected to each other according to the required length. For example, as shown in FIG. 7, the left side wall 7 'of the leftmost concrete block D' in FIG. 7 is joined to the right side wall R of the concrete block A. On the other hand, the rightmost side wall 8 of these concrete blocks B in FIG. Is joined to the left side wall L 'of the next concrete block C.

FIGS. 5 and 6 show a concrete block C. FIG. The concrete block C has an opening 9, an air hole 10, and a binding hole 11 corresponding to the concrete block A. The feature of the concrete block C is that the concrete block C is joined to the intermediate concrete block B in a state opposite to the concrete block A. That is, in the concrete block C, the thick portion 12 corresponds to the side wall L of the concrete block A and is in contact with the ground in the assembled state, and the thin portion 13 corresponds to the side wall R of the concrete block A as shown in FIG. To contact the side wall 8 of the concrete block B ″.

As described above, the concrete block A,
The concrete blocks B, B ', B ",..., And the concrete block C are joined to each other. At this time, the bolts of the side walls R, 7,. The bolts, nuts and washer plates are made of stainless steel or are preferably used after being subjected to a rust-proof treatment.

After the bolt is tightened, the bolt hole seat is protected by filling with a filler, for example, mortar 15 (see FIG. 8).

After the concrete blocks A, B, C are respectively connected, lids are assembled at both ends to each concrete block in a manner not shown here.

[0013]

[Effect of the invention] The structure of the water tank according to the present invention allows the water tank to be freely extended in the longitudinal direction, and also reduces the weight of a single concrete block during assembly, thus facilitating construction. It can be performed very easily without using heavy machinery, and the construction period is shortened.

[Brief description of the drawings]

FIG. 1 is a diagram of an end concrete block of a concrete block of an underground water tank according to the present invention.

FIG. 2 is a front view of the concrete block shown in FIG.

FIG. 3 is a diagram of an intermediate concrete block of a concrete block of an underground water storage tank according to the present invention.

FIG. 4 is a front view of the concrete block shown in FIG. 3;

FIG. 5 is a diagram of a concrete block at an end of a concrete block of an underground water tank according to the present invention.

FIG. 6 is a front view of the concrete block shown in FIG. 1;

FIG. 7 is an overall view of an underground water tank constructed by assembling concrete blocks according to the present invention.

FIG. 8 is a view showing a state in which side walls of two concrete blocks are tightly connected to each other.

[Explanation of symbols]

 1,4,9 Opening 2,5,10 Air vent 3,6,11 Tightening hole 7,8 Side wall of intermediate concrete block 12,13 Side wall of end concrete block 14 Bolt 15 Mortar L Thickness of end concrete block Side wall R Thin wall of concrete block at end A Concrete block at end B, B ', B "Intermediate concrete block C Concrete block at end

Claims (1)

(57) [Scope of request for utility model registration] In an underground water storage tank comprising a concrete block combination, a left side wall (L) has a thickness enough to withstand earth pressure, and a right side wall (R) is thinner than the left side wall. An opening (1) through which water can flow between adjacent concrete blocks, and an air hole (2) at the upper end so that air can flow between the adjacent concrete blocks. The concrete block (A) is provided with a bolt fastening hole (3) for enabling connection between the concrete blocks, the thickness of the left and right side walls (7, 8) is reduced, the opening (4), the air Concrete block (B) provided with hole (5) and bolt tightening hole (6), opening (9) formed corresponding to concrete block (A), air hole (10) and bolt tightening hole (11) Concrete with The concrete block (C) is arranged in parallel with the concrete block (C) at the side end, the concrete block (B, B ', B "...) By a predetermined number in the middle, and the concrete block (C) at the other end. Then, each side wall is fastened with bolts (14), and the block structures thus integrally formed are arranged in a predetermined number in the longitudinal direction, and each block structure is fastened and constructed. Characterized underground water tank.