JPH08326036A - Method of construction of small-scale dam - Google Patents

Abstract

PURPOSE: To enable construction simply and quickly by building an upstream- side form block on the dam upstream side on foundation concrete, constructing a downstream-side form block on the dam downstream side and placing concrete between both form blocks. CONSTITUTION: A plurality of blocks 3 are piled up in an uptight type on the dam upstream side on foundation concrete 1 placed on the ground, thus constructing upstream-side form blocks 2. On the other hand, a plurality of blocks 5 are heaped up on the dam downstream side on foundation concrete 1 in a self-supporting type so as to be inclined in the direction of the upstream- side form blocks 2, thus building downstream-side form blocks 4. Each of both form blocks 2, 4 is constructed so as to have a plurality of contact surfaces formed by stepped sections 7 on the foundation blocks 101, 105 at that time. Each exposed surface of both form blocks 2, 4 is formed in a natural stone shape. Internal concrete 6 is placed between both form blocks 2, 4, thus building a small-scale dam 31.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-scale dam construction method, and an object thereof is to provide a small-scale dam construction method capable of easily and reliably constructing a small dam dam body.

[0002]

2. Description of the Related Art Generally, a dam body of a conventional dam is constructed by placing concrete in the form of a slide form or ordinary form which is assembled according to a predetermined dam structure. It was built by repeating upwards.

The above-mentioned form has been formed from an upstream form, a downstream form, a horizontal seam form, a loose form of a rock landing part, or a form of a specially shaped box.

[0004]

Therefore, in the work of assembling the formwork for concrete placement in the conventional dam body construction method described above, many man-hours are required and the curing of the placed concrete is difficult. Similarly, disassembling the formwork thereafter required a lot of labor and time, and the work was extremely dangerous.

Further, since the constructed dam is one in which a formwork is assembled and concrete is poured, it is almost impossible to apply makeup to the outer surface of the dam. The emergence of the dam has greatly reduced the value of the dam as a tourism resource.

[0006] Therefore, the present invention is intended to solve the above-mentioned drawbacks of the conventional example, and it is possible to obtain a natural stonework-like appearance, which is valuable as a tourist resource in harmony with nature, and its construction is simple and quick. It is intended to provide a small-scale dam construction method that can be carried out.

[0007]

[Means for Solving the Problems] That is, the small-scale dam construction method of the present invention is to place a foundation concrete in the ground,
Plural blocks are piled upright on the upstream side of the dam on the foundation concrete to form an upstream formwork block, and on the downstream side of the dam on the foundation concrete, multiple blocks are inclined toward the upstream formwork block. It is characterized by stacking in a self-supporting manner to form a downstream formwork block and then placing concrete between them.

The small-scale dam construction method of the present invention is also characterized in that the upstream side mold block and the downstream side mold block are constructed to have a plurality of contact surfaces on the base block.

The small-scale dam construction method of the present invention is also characterized in that the contact surfaces of the respective upstream side mold blocks are provided with concave and convex portions for preventing misalignment.

The small-scale dam construction method of the present invention is also characterized in that a connecting metal fitting for preventing displacement is attached to the contact surface of each downstream form block.

Furthermore, the small-scale dam construction method of the present invention is
It is also characterized in that the exposed surfaces of the upstream side mold block and the downstream side mold block are formed like natural stones.

[0012]

Since the small dam construction method of the present invention is configured as described above, the small dam obtained can have a natural stonework-like appearance and is valuable as a tourist resource in harmony with nature. Met.

Further, according to the small-scale dam construction method of the present invention, it is possible to provide a small-scale dam construction method that can be easily and quickly constructed, shortens the construction period, and greatly reduces the cost.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a small dam construction method according to the present invention will be described below with reference to the drawings.

FIG. 1 shows a small-scale dam obtained by the small-scale dam construction method of the present invention, and 31 indicates a small-scale dam.

This small-scale dam 31 has a foundation concrete 1 cast on the ground, an upstream formwork block 2 consisting of a plurality of blocks 3 piled upright on the upstream side of the dam on the foundation concrete 1, and a foundation. Downstream formwork block 4 consisting of a plurality of blocks 5 stacked on the concrete 1 downstream of the dam to incline toward the upstream formwork block 2
And internal concrete 6 cast between the upstream mold block 2 and the downstream mold block 4.

The upstream formwork block 2 and the downstream formwork block 4 are respectively composed of basic blocks 101 and 10.
It is constructed so as to have a plurality of contact surfaces formed by the step 7 on the step 5, so that installation work is easy and mutual connection is strong.

The exposed surfaces of the upstream mold block 2 and the downstream mold block 3 are formed like natural stones. That is, the outer surface of the block 3 of the upstream mold block 2 having a height higher than that which is normally submerged due to the water level and the outer surface of almost all the downstream mold block 3 are formed like natural stones. In particular, the downstream formwork block 3 is formed like a natural stone with rock-like unevenness, and has a structure that is excellent for landscape.

2 to 4 are views showing the details of the upstream formwork block 2. As shown in FIG. In the figure, a plurality of blocks 3 are piled upright on the upstream side of the dam, and a foundation block 101 is installed on the foundation concrete 1 at the lowest portion. The blocks 3 and the basic blocks 101 are alternately stacked in the lateral direction by about half and stacked, and the upper and lower parts of the blocks 3 and the basic block 101 can be connected in the lateral direction.

FIG. 3 is for explaining the details of the ordinary block 3. The block 3 includes an upper horizontal portion 11, an inwardly stepped portion 12 and a lower horizontal portion 13 from the outer surface side of the small dam 31. It has and.

The upper horizontal portion 11 has a groove 14 formed in the width direction on the upper surface thereof, and a protrusion 15 engaging with the groove 14 on the lower surface. Further, an L-shaped recess 16 is formed on the upper surface of the step portion 12, and a hanging metal fitting 17 for carrying the block 3 is embedded in the bottom surface thereof. Further, an end face of the lower horizontal portion 13 is formed with a hollow 18 filled with poured concrete.

FIG. 4 is for explaining the details of the basic block 101. The basic block 101 is a small dam 31.
An upper horizontal portion 102 having a groove 14 is provided from the outer surface side, and an inwardly inclined portion 103 is provided, and the bottom portion is horizontal.

FIGS. 5 to 7 are views showing the details of the upstream formwork block 2 which is decorated like a natural stone.

FIG. 6 is for explaining the details of the decorative block 201. The decorative block 201 has an uneven surface 202 having a rock surface on the outer surface, and the other structure is almost the same as that of FIG. .

FIG. 7 is a diagram for explaining the details of the makeup base block 201 ′. The base block 201 ′ also has an uneven surface 202 having a rock surface on the outer surface, and the other structures are the same as those of FIG. It is almost the same.

8 to 10 show the downstream formwork block 4
It is a figure which shows the detail of. In the figure, a plurality of blocks 5 are stacked on the downstream side of the dam so as to incline toward the upstream formwork block 2, and at the bottom of the blocks, there is a basic block 105.
Is installed on the foundation concrete 1. The blocks 5 and the base blocks 105 are stacked while being alternately shifted by about half in the horizontal direction, and can be connected in the horizontal direction by connecting the upper and lower sides thereof.

FIG. 9 is a view for explaining the details of the ordinary block 5. The block 5 is a shallow sloped portion 21 from the outer surface side of the small-scale dam 31, an upper sloped portion 21, and an inwardly stepped portion 22. It has a lower horizontal portion 23 and is inclined rearward as a whole.

Suspension fittings 27 (long nuts) for carrying the block 5 are embedded in the upper surfaces of the step portion 22 and the lower horizontal portion 23. Further, on the inclined end surface of the lower horizontal portion 23, a hollow 28 is formed in which the cast concrete is filled.

FIG. 10 is for explaining the details of the basic block 105. The basic block 105 is the small dam 3.
1, a shallow inclined portion 106 is provided from the outer surface side, an inwardly inclined portion 107 and a lower horizontal portion 108 are provided, and the bottom portion is horizontal. Reference numeral 27 is a hanging metal fitting for carrying the base block 105 as in the case of FIG.

FIG. 11 is a view showing details of another downstream formwork block 4 '. In the figure, on the downstream side of the dam, a plurality of blocks 5'are stacked so as to incline toward the upstream formwork block 2, and the base block 105 'is at the bottom.
Is installed on the foundation concrete 1. Also, the blocks 5'and the basic blocks 105 'are alternately stacked in the lateral direction by about half, and the upper and lower parts of the blocks 5'and 105' can be connected in the lateral direction.

FIG. 12 is for explaining the details of the ordinary block 5 '. The block 5'is a portion 21' which is slightly inclined from the outer surface side of the small dam 31 and a step portion 22 which is bent almost vertically. ', And the front is more steeply inclined. By properly combining the downstream side mold blocks 4 and 4 ', the downstream inclination of the small dam 31 can be adjusted to a required angle.

Inclined portion 21 'and step portion 22'
A hollow 28 is formed in which the filled concrete is filled.

FIG. 13 is for explaining the details of the base block 105 '. The base block 105' is provided with a portion 106 'slightly inclined from the outer surface side of the small dam 31, and the bottom is horizontal. .

FIG. 14 is a schematic view showing the suspension fitting 301 of the downstream form block 4. This suspending metal member 301 has a connecting portion 302 that abuts the step portion 22 and the lower horizontal portion 23.
And a suspension part 303 for lifting with a crane or the like. Further, 304 is a rib formed on the upper surface from the connecting portion 302 corresponding to the step portion 22 to the suspension portion 303,
305 is provided on a rib formed on the upper surface of the suspended portion 303,
It is a suspension hole for lifting through a wire or the like.

A plurality of bolt holes 29 are formed so that it is possible to determine which position is used according to the width of the downstream mold block 4.

The suspension fitting 301 is fixed to the suspension fitting 27 at the connecting portion 302 with a bolt, and is suspended by a wire or the like through a suspension hole 305 formed in the rib 304 on the upper surface up to the suspension portion 303. In addition, the hanging metal fittings 27 provided in the lower horizontal portion 23 of the downstream mold block 4
Can also be used to fit scaffolding pipes to perform accident-free work.

[0037]

Since the small-scale dam construction method of the present invention is configured as described above, the obtained small-scale dam can obtain a natural stonework-like appearance and is valuable as a tourism resource in harmony with nature. I had one.

According to the small-scale dam construction method according to the present invention, it is possible to provide a small-scale dam construction method that can be easily and quickly constructed, shortens the construction period, and greatly reduces the cost.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an embodiment of a small-scale dam construction method of the present invention.

FIG. 2 is a schematic view showing an assembled state of an upstream formwork block.

FIG. 3 is a schematic diagram of an individual block.

FIG. 4 is a schematic diagram of a basic block.

FIG. 5 is a schematic view showing an assembled state of an upstream formwork block that is made like natural stone.

FIG. 6 is a schematic diagram of an individual block.

FIG. 7 is a schematic diagram of a basic block.

[Fig. 8] Fig. 8 is a schematic view showing an assembled state of a downstream formwork block that is made like natural stone.

FIG. 9 is a schematic diagram of an individual block.

FIG. 10 is a schematic diagram of a basic block.

FIG. 11 is a schematic view showing an assembled state of another downstream form block.

FIG. 12 is a schematic diagram of an individual block.

FIG. 13 is a schematic diagram of a basic block.

FIG. 14 is a schematic view showing a suspension metal fitting of the downstream form block.

[Explanation of symbols]

 1 Foundation concrete 2 Upstream form block 3 Block 4,4 'Downstream form block 5,5' Block 6 Internal concrete 7 Step 11 Upper horizontal part 12 Step part 13 Lower horizontal part 14 Recessed groove 15 Protrusion 16 16 L-shaped Depression 17 suspension metal fittings 18 hollow 21,21 'upper inclined portion 22,22' step portion 23 lower horizontal portion 27 suspension metal fittings 28 hollowing 29 bolt holes 31 small dams 101, 101 ', 105, 105' foundation block 102 upper horizontal Part 103 Inclined part 106 Upper horizontal part 106 'Upper inclined part 107 Inclined part 108 Lower horizontal part 201 Makeup block 202 Rough surface 201' Foundation block 301 Suspension metal fitting 302 Connection part 303 Suspended part 304 Rib 305 Suspended hole

Claims (5)

[Claims] 1. A foundation concrete is cast into the ground, and a plurality of blocks are piled upright on the upstream side of the dam on the upstream side of the dam to form an upstream formwork block. On the downstream side of the dam on the underlying concrete. A small-scale dam construction method characterized by constructing a downstream formwork block by stacking a plurality of blocks in a self-supporting manner so as to incline toward the upstream formwork block, and placing concrete between them. 2. The small dam construction method according to claim 1, wherein the upstream side mold block and the downstream side mold block are constructed so as to have a plurality of contact surfaces on the base block. 3. The small-scale dam construction method according to claim 1, wherein the contact surfaces of the upstream formwork blocks are provided with recesses and projections for preventing mutual displacement. 4. The small-scale dam construction method according to claim 1, wherein a connecting metal fitting for preventing displacement is attached to the contact surface of each downstream side mold block. 5. The small-scale dam construction method according to claim 1, wherein the exposed surfaces of the upstream side mold block and the downstream side mold block are formed like natural stones.