JP5661392B2 - Water storage facility construction method and water storage unit - Google Patents

Description

  The present invention relates to a method for constructing a water storage facility for storing rainwater or the like buried in the ground for use as rainwater or the like as water for fire prevention, irrigation of crops or flower beds, or as a flood mitigation measure during torrential rain. It relates to a water storage unit used in the construction method.

  The above-mentioned water storage facilities are of the type installed to temporarily store rainwater, fire prevention water, crops, flower beds, etc., as flood mitigation measures when there is precipitation that exceeds the wastewater treatment capacity There is a type that stores rainwater and the like for use as irrigation.

  In the following Patent Document 1, as a water storage unit that constitutes a water storage facility, a flat base that is square or rectangular and a pair of diagonal lines on one side of the base are arranged on one diagonal line, Or a pair of legs that are arranged side by side in the horizontal or vertical direction and are integrally formed on the base and have a fitting portion at the tip, and on the other diagonal of the base. Or a pair of fitting holes that are formed side by side in the vertical or horizontal direction and into which the fitting parts of the legs are fitted, and when constructing a water storage facility, the ground is excavated and covered with gravel or non-woven fabric at the bottom of the hole A water storage unit with a lining layer formed on it, with the legs facing upwards, and another water storage unit with the legs facing downwards, with the fitting parts of the upper and lower legs facing each other Install the upper and lower water storage units so that they fit into the fitting holes. In the set, water storage unit is disclosed in which stacked it what set even multiple stages.

Japanese Patent No. 4360658

  According to the water storage unit disclosed in Patent Document 1, the base is flat and thin, and the outer shape is square or rectangular. A set of upper and lower water storage units is configured by arranging the bases while making contact, turning another water storage unit upside down, and fitting the fitting parts of the upper and lower legs into the corresponding fitting holes, respectively. It is possible to construct a water storage facility with good workability, etc., and the water storage facility has a water storage unit leg built inside, but it is possible to see through the point, so that the internal visual inspection can be easily performed, and the leg is hollow. When forming a water storage unit by using a truncated circular (square) pyramid shape, it is easy to remove the mold, and when stacking the water storage unit during storage or transportation, fit the legs of the upper and lower water storage units and stack them Can It has advantages such as compactness and storage and transportation without taking up space, but when assembling another water storage unit on a water storage unit with the legs facing upward, the upward protruding leg becomes an obstacle It tends to get in the way of work.

  Also, when stacking a pair of water storage units that are assembled vertically, stack the water storage units so that the bases are back to back, but make sure that the upper and lower water storage units do not slip sideways. Therefore, each water storage unit is provided with a convex portion and a concave portion on the base, and the concave and convex portions are fitted, but if the convex portion protruding from the base is made high, it is possible to reliably prevent lateral displacement, It becomes an obstacle and easily interferes with work, and is easily damaged. On the other hand, if the protrusion is lowered, the certainty of preventing lateral slippage is lacking.

  An object of the present invention is to solve the above problems and further improve workability, and to provide a method for constructing a water storage facility in which stacked water storage units do not slip laterally, and a water storage unit used in the construction method. To do.

The invention according to claim 1 is a flat base, a leg standing at three or more locations on one side of the base, and a leg having a fitting portion at the tip, and the other side of the base. Using a water storage unit that is formed in the same number as the leg and has a fitting hole in which the fitting portion of the leg is fitted, and on the base of the water storage unit laid with the leg facing down, laying a stack of the water storage unit, the top and bottom of the reservoir unit stacked, water which is connected by fitting the fitting portion of the legs of the upper water storage unit to the base fitting hole of the water storage unit of the lower A construction method for a facility, wherein the fitting portion has a cross section smaller than that of the leg, forms a step with the leg, the fitting hole is a through hole, and the fitting portion of the leg is a fitting hole. It is characterized by being fitted through the fitting hole and protruding from the fitting hole .

  The invention according to claim 2 is the invention according to claim 1, in which either one of the upper and lower water storage units straddles the other plurality of water storage units among the water storage units stacked vertically. The one water storage unit and the other plurality of water storage units are connected by fitting.

The invention according to claim 3 relates to a water storage unit used in the invention according to claim 1 or 2, and is erected at eight or more places on a square or rectangular flat base and one side of the base. A leg having a fitting portion at the tip, and a fitting hole formed on the other side of the base in the same number as the leg, and into which the fitting portion of the leg is fitted. 3. The holes according to claim 1, wherein the holes are arranged in an even number of four or more rows in the vertical direction and the horizontal direction, and the legs and the fitting holes are provided alternately in at least one of the vertical direction and the horizontal direction. In the water storage unit used in the construction method, the fitting portion has a cross section smaller than the leg, forms a step with the leg, the fitting hole is a through hole, and the fitting portion of the leg is a fitting hole. It is characterized by being fitted through the fitting hole and protruding from the fitting hole .

  The invention according to claim 4 is characterized in that the water storage unit of the invention according to claims 1 to 3 is a molded product, and the legs are cylindrical and have a truncated cone shape or a truncated pyramid shape.

  According to the first aspect of the present invention, the water storage unit is laid with the legs facing downward, but since the legs are erected at three or more places, the legs are not fitted into the fitting holes in the lowermost water storage unit. The water storage unit can be laid stably even if it is placed directly on the ground, and the construction can be done by simply stacking the water storage unit with the legs always facing downward and the fitting part fitted into the fitting hole. The top surface is flat, and there are no obstacles that can be caught during work, so it is easy to walk and workability is good, and all the water storage units are fitted with the fitting parts of the legs in the fitting holes. Therefore, it is possible to prevent lateral displacement, and it is not necessary to provide a special means for preventing lateral displacement, and the water storage unit has only a leg protruding from the base and forms a fitting hole. There is a water storage unit inside Because it is possible through has the effect of such that visual inspection can be easily performed.

  According to the invention relating to claim 2, adjacent water storage units of each laid tier are fixed by being connected to the upper and lower water storage units.

  According to the water storage unit of the invention according to claim 3, since the base is a square or a rectangle, the water storage units can be joined and laid side by side without any gaps, and the workability is good. And it has the effect that the upper and lower four water storage units can be connected.

  According to the invention of claim 4, since the legs are frustoconical or frustoconical, this becomes a draft, making it easy to remove the mold during molding, and the legs are cylindrical, frustoconical or By making the truncated pyramid shape, it can be inserted into the legs of another water storage unit and stacked, so that the stacked water storage units become compact and do not easily collapse and can be stored and transported easily.

The perspective view of a water storage unit. The perspective view which accumulated the water storage unit shown in FIG. The same side view. Sectional drawing of the water storage facility after construction. The perspective view of another aspect of a water storage unit. The perspective view which shows another aspect of a water storage unit. The perspective view which shows another aspect of a water storage unit. The top view of the 1st step | paragraph which laid the water storage unit shown in FIG. The top view which accumulated the 2nd-stage water storage unit on the 1st-stage water storage unit. The top view which laid the water storage unit around the 2nd-stage water storage unit. The perspective view which shows another aspect of a water storage unit. The perspective view which shows another aspect of a water storage unit. The top view of the water storage unit of another aspect. The top view of the other aspect of a water storage unit.

Hereinafter, an embodiment of the present invention will be described first with reference to the drawings from a water storage unit.
The water storage unit 1 shown in FIG. 1 may be made of metal such as steel or aluminum, but is preferably a molded product, for example, a highly rigid and high strength molded product such as FRP, and a square flat base 2. The base 2 is erected at three locations on one side of the base 2 and has a small-diameter fitting portion 3 at the tip and a cylindrical frustoconical shape communicating with the opening 4a formed in the base 2 The leg 4 has the same number as the leg 4 and has three fitting holes 5 formed in three places and into which the fitting portion 3 can be fitted. The legs 4 and the fitting holes 5 are arranged in two horizontal rows and three vertical rows. Are arranged alternately in the vertical and horizontal directions. Here, the legs 4 may be separately attached to the base 2, but are preferably integrally formed with the base 2.

The base 2 has a flat plate shape, but for the purpose of water flow, a lattice structure, a honeycomb structure, or a polygonal, circular, or elliptical opening that combines vertical bars and horizontal bars vertically and horizontally. You may use what was formed in.
Further, the cross section of the leg 4 may be oval other than circular. Therefore, the conical shape referred to in the present invention includes an elliptical shape having a cross section other than a circular shape.

  2 and 3 show a state in which the water storage unit 1 shown in FIG. 1 is assembled in an overlapped manner. When constructing a water storage facility using the water storage unit 1, first, as shown in FIG. Cover with gravel 7 and cover with waterproof sheet 8. Next, a mounting plate 9 in which a fitting hole 5 is formed is laid, and the first water storage unit 1 with the leg 4 facing downward and the opening 4a facing upward is mounted on the fitting portion 3 at the distal end of the leg. 9 is fitted into the fitting hole 5 formed and assembled. Next, the second-stage water storage unit 1 with the legs 4 facing downwards on the first-stage water storage unit 1 and the openings 4a facing upward is fitted into the fitting holes 5 at the fitting portions 3 at the ends of the legs. Assemble. Similarly, the third and fourth stage water storage units 1 are assembled and stacked.

  The water storage unit 1 is also laid side by side so that the bases are joined to each other on the front, back, left, and right in the horizontal direction, but this laying may be performed before and after the above-described vertical stacking. That is, after the first stage water storage unit 1 is laid in the front, rear, left and right, the second stage, the third stage, and the water storage unit 1 may be stacked on top of each other, or the water storage units stacked as shown in FIG. 1 may be assembled so as to be joined to each other in the front-rear and left-right directions.

  As described above, the water storage unit 1 is laid in the front, rear, left, and right, and stacked in multiple stages in the vertical direction to form a water storage facility. After the construction of the water storage facility, the waterproof sheet 8 is then covered to cover the whole, and gravel or earth and sand are covered thereon to form the covering layer 11. In the figure, reference numeral 13 denotes an inlet for rainwater or the like to the water storage facility described above, and 14 denotes an outlet.

According to the water storage facility of the present embodiment, rainwater and the like flowing in from the inflow port 13 are stored in the water storage facility, and rainwater and the like flow into the legs 4 from the upward opening 4a and are poured. The amount of rainwater or the like accumulated in the water storage facility increases, and when the level reaches the outlet 14, it flows out of the outlet 14. In this way, rainwater and the like are stored, and flooding during heavy rains is mitigated. The accumulated rainwater or the like can be used as fire prevention water or as irrigation for agricultural products or flower beds.
The waterproof sheet 8 described above can be changed to a water-permeable sheet, and by changing to the water-permeable sheet, accumulated rainwater or the like can be infiltrated into the ground.

  In the above-described embodiment, the first-stage water storage unit 1 is assembled on the mounting plate 9, but the mounting plate 9 is omitted and the first-stage water storage unit 1 is placed with the legs 4 facing downward. You may make it lay directly on a waterproof sheet. Even if the mounting plate 9 is not provided, the base 2 is supported by three legs, so that it does not become unstable.

The water storage unit 16 shown in FIG. 5 has a leg 4 of the water storage unit 1 shown in FIG. 1 in a truncated pyramid shape, a hollow or cylindrical leg 17 inside, and a fitting hole 5 in a square hole 18. The fitting part is also a square hook-like fitting part 19. In the illustrated example, the cross section is a rectangle, but it may be a triangle or a polygon that is a pentagon or more. Accordingly, in the present invention, the pyramid shape includes a polygon having a triangular or pentagonal shape in addition to a rectangular cross section.

  The water storage unit 16 of the present embodiment is also assembled and installed in the same manner as the water storage unit 1 of the embodiment described above.

  The water storage unit 21 shown in FIG. 6 has the above-mentioned legs 4 erected at five locations on a rectangular base 22 and the fitting holes 5 are formed at five locations. The arrangement is made in two rows and five columns, and alternately in the vertical and horizontal directions, and the construction is performed in the same manner as described above.

  The water storage unit 25 shown in FIG. 7 has a structure in which four of the water storage units 1 described above are combined. The leg 4 is erected at 12 locations, and the fitting hole 5 is connected to the leg 4 at 12 locations. It is formed alternately. More specifically, the legs 4 and the fitting holes 5 are arranged in four rows and six rows, and the legs 4 and the fitting holes 5 are formed alternately in both the vertical direction and the horizontal direction.

  At the time of construction, first, the first-stage water storage unit 25 is laid so that the legs 4 face downward and are joined to the front, rear, left, and right (FIG. 8). Next, the second-stage water storage unit 25 is stacked with the legs 4 fitted in the fitting holes 5 of the respective first-stage water storage units 25 (FIG. 9). 25 and four adjacent water storage units 25 in the first stage are connected.

  Next, a half-divided water storage unit 25a is laid around the second-stage water storage unit 25, and a 1/4% water storage unit 25b is laid at the corner (FIG. 10). These water storage units 25a and 25b may be omitted. In this case, the plurality of stages of water storage units 25 are stacked in a state where they are drawn in from the odd-numbered water storage units 25 by half of the water storage units 25a and 1/4% of the water storage units 25b.

  After the second-stage water storage unit 25 is laid as described above, the third-stage water storage unit 25 is assembled, and the third-stage water storage unit 25 is assembled on the second-stage water storage unit. This is the same as the first stage water storage unit 25 shown in FIG. Similarly, the water storage units 25 in the fourth and higher stages are sequentially assembled in the above-described manner to constitute a water storage facility.

  According to this embodiment, the water storage unit 25 in each stage is connected by the water storage unit 25 assembled | attached up and down, and can connect adjacent water storage units.

  The water storage unit 31 shown in FIG. 11 is the same as the water storage unit 25 shown in FIG. 7, except that the leg 4 is replaced with the leg 17 of the truncated quadrilateral thrust and the fitting part 3 and the fitting hole 5 are both square fitting part 19 and In this embodiment, the water storage unit 31 of the present embodiment is assembled in the front / rear / left / right and top / bottom as well as the water storage unit 25.

  The water storage unit 35 shown in FIG. 12 is formed by arranging the legs 4 and the fitting holes 5 in the horizontal 4 rows and the vertical 10 rows so as to be staggered in the vertical and horizontal directions. Assembled.

  The water storage unit 41 shown in FIG. 13 is formed by arranging the legs 4 and the fitting holes 5 in four horizontal rows and four vertical rows so as to be staggered in the vertical and horizontal directions. The water storage unit shown in FIG. 45 is formed by alternately arranging the legs 4 and the fitting holes 5 in the vertical direction and the same in the horizontal direction. 13 and 14 show the assembled state.

  In each of the above embodiments, the bases 2 and 22 are square or rectangular. However, the bases 2 and 22 may be polygons or circles such as pentagons, hexagons, and octagons, and the shapes are squares that can be easily combined. A rectangle or hexagon is desirable.

1, 16, 21, 25, 31, 35, 41, 45 ··· Water storage unit 2, 22 ·· Base 3, 19 · · Fitting portion 4, 17 · · Leg 5 · · Fitting hole 7 · · Gravel 8 ..Waterproof sheet 9 ..Mounting plate 11 ..Coating layer 13 .. Inlet 14 .. Outlet 18 .. Square hole

Claims (4)

A flat base, a leg standing on three or more sides of one side of the base, and having a fitting portion at the tip; and the same number of legs as the leg on the other side of the base; A water storage unit having a fitting hole into which the fitting portion of the water is fitted is installed, and another water storage unit with the legs also facing downward is stacked and laid on the base of the water storage unit laid with the legs facing downward. The stacked upper and lower water storage units are a construction method of a water storage facility that is connected by fitting the fitting portion of the upper water storage unit leg into the fitting hole of the base of the lower water storage unit , The fitting portion has a cross section smaller than that of the leg, forms a step with the leg, the fitting hole is a through hole, and the fitting portion of the leg is fitted into the fitting hole through the fitting hole. A construction method for a water storage facility characterized by being fitted and projected from a joint hole .   Among the water storage units stacked one above the other, either one of the upper and lower water storage units straddles the other plurality of water storage units, and the one water storage unit and the other plurality of water storages by fitting the fitting portion and the fitting hole. The construction method for a water storage facility according to claim 1, wherein the unit is connected. A square or rectangular flat base, standing legs at eight or more positions on one side of the base, and a leg provided with a fitting portion at the tip, and the same number of legs as the other side of the base A fitting hole in which the fitting portion of the leg is fitted, and the leg and the fitting hole are arranged in an even number of four or more rows in the vertical direction and the horizontal direction, and at least in the vertical direction and the horizontal direction. The water storage unit used in the construction method according to claim 1 or 2 , wherein the leg and the fitting hole are provided alternately in one direction , wherein the fitting portion has a transverse section smaller than the leg, A water storage unit comprising a step, and the fitting hole is a through hole, and the fitting portion of the leg passes through the fitting hole and protrudes from the fitting hole. . 4. The water storage unit according to claim 3, wherein the water storage unit is a molded product, and the legs are cylindrical and have a truncated cone shape or a truncated pyramid shape.