JP5004602B2 - Rainwater storage device - Google Patents

Description

  The present invention relates to a rainwater storage device for controlling the outflow of rainwater installed in a park or park green space, and in particular, a rainwater storage device in which block bodies having voids are arranged side by side vertically and stacked vertically to form a storage tank. About.

  Regulating ponds for storing rainwater and controlling rainwater outflow are provided in the site, school grounds, and parking lots. In this adjustment pond, it is important from the aspect of securing the adjustment flow rate to remove sediment and dirt deposits mixed in rainwater and to maintain the adjustment pond.

There are open type and concrete underground adjustment ponds as such adjustment ponds. These adjustment ponds can carry heavy sediments into the adjustment ponds and carry out sediments and the like periodically, and maintenance is easy.
However, the open type cannot be used on the regulating pond, and the concrete is a large-scale construction, requiring a long period of time for construction and increasing the cost.

  Therefore, an adjustment pond of a type in which plastic block bodies having voids are stacked as shown in Patent Documents 1 to 4 described later is used in many places with good rainwater storage efficiency, easy construction, and low cost. It became so.

  In an adjustment pond that stacks blocks, the size of the gap is small, heavy machinery can not be used, people can enter and it is impossible to carry out sediment and dirt, so maintenance work is difficult, and sediment such as earth and sand is collected. Various related facilities such as dredging, dams, orifices, etc. are required to control removal and maintenance and outflow. Further, a groove communicating with an inspection hole or an inflow trough is provided at a position lower than the block body, and cleaning is performed with a high-pressure cleaning device.

As prior art documents related to this prior art, there are the following patent documents 1 to 4.
JP 2002-129640 A JP 2005-120658 A Japanese Patent Laying-Open No. 2005-351079 Japanese Patent Laid-Open No. 10-77666

  The adjustment pond of the type that stacks the block bodies with voids is easy to construct, but it is constructed with cast-in-place concrete such as grooves, inflow / outflow pits, inspection holes, etc. However, there was a problem that it became a factor of high cost.

Furthermore, when connecting a basket or the like to a storage tank made up of stacked block bodies, the process is troublesome because it does not fit well with the block body, resulting in poor fit and gaps, and a special block body that fills the gaps Therefore, the construction becomes complicated and the construction becomes complicated, resulting in high cost.
For this reason, it is easier to construct the dredger independently on the outside of the storage tank, but in that case, the entire site cannot be used as a storage tank, so the storage capacity is reduced. In order to ensure capacity, the depth of the storage tank must be increased, which increases the construction cost, and further increases the maintenance cost, such as the fact that natural drainage becomes impossible and pump drainage occurs.

  In addition, it is difficult to store the drainage groove inside the storage tank, and it must be provided further below the lowermost surface of the block body, resulting in high cost, poor workability, and difficulty in securing water stoppage. In addition, it is necessary to perform excavation for a ditch in the bottom of the storage tank, and sufficient backfilling cannot be performed, causing problems such as block subsidence. Furthermore, when the dredging is provided independently on the outside of the storage tank, the pipe line connecting the storage tank and the dredger becomes long during an earthquake, and the attachment part is often damaged.

  The problem of the present invention is that in a rainwater storage device of a type in which block bodies having voids are stacked, the maximum water storage amount can be secured in a limited site, the workability of the storage tank can be greatly improved, the construction period can be shortened and the cost can be reduced It is to make the structure stable against subsidence and water leakage.

A rainwater storage device that constructs a storage tank by laminating storage block bodies having gaps in parallel in the horizontal direction,
Inside the four corners of the storage tank and formed without installing the storage block body, a cylindrical body member having an integral multiple of the width and depth of the storage block body is stacked, and three inflow rods and one A drainage trough is formed, and a drainage groove formed by connecting a drainage groove block in which a drainage hole communicating with the storage tank on the side surface is formed on the side surface at the bottom of the outer periphery of the storage tank. The drainage grooves are connected to the bottoms of the inflow and outflow dredges, and the bottom surfaces thereof are inclined toward the outflow dredge. A concave part is formed in the connecting part of the block, and a connecting metal fitting is installed in this concave part and connected to each other so that there is no protruding part from the outer surface. Is a rainwater storage device covered with a water shielding sheet.

  Since the inflow trough and the outflow trough have a plane size that is an integral multiple of the storage block body, the inflow trough and the outflow trough can be constructed by fitting them inside the four corners of the storage tank composed of the storage block body without any gaps. it can.

Since the dredging is not constructed outside the storage tank independently, the water storage tank can be constructed to fill the site and the site can be used efficiently.
Since the dredging and the storage block are installed close to each other, the pipe that communicates between the dredging and the storage tank can be shortened, and there is no fear of water leakage (intrusion of water from the outside) or damage during an earthquake.
Since it is the structure by which the dredging and the waste mud member were arrange | positioned inside the storage tank, there is no part which protrudes in the storage tank side surface, and construction of the water shielding sheet which wraps the whole storage tank becomes easy.

Furthermore, since the drainage groove member has a plane shape that is an integral multiple of the storage block body and has a drainage hole that allows mud to flow into the side surface, a gap may be generated between the storage block body and the drainage groove member. Absent.
It is not necessary to provide the drainage groove member below the storage block body, and it can be installed on a flat and sufficiently stable foundation surface, so that anxiety such as settlement can be eliminated.
Since the drainage groove member is connected to the dredger, the storage tank, the dredger and the drainage can be integrated to form a stable structure against an earthquake or the like.

By connecting steel, precast concrete members, cast-in-place concrete, synthetic resin members, etc. between the upper parts of the ridges installed at the four corners, the storage tank, ridges and drainage groove members become an integrated structure. And a stable structure.
In addition, resistance to buoyancy is improved because it resists buoyancy caused by groundwater.

  Since the shape of the drainage groove member is a gate shape, the lowermost surface of the storage block body can be flush with the lower surface of the drainage groove, and mud and the like in the storage block body can be discharged efficiently.

Since the cylindrical main bodies and drainage groove blocks are connected by connecting fittings, the storage tank, the tank and the drainage groove member can be firmly integrated, A stable structure can be provided, and the connecting metal fitting is designed not to protrude from the outer surface of the cylindrical body of the bag or the outer surface of the drainage groove member. Can be accommodated in the gap formed when stacking, the construction period can be shortened and the cost can be further reduced.
Furthermore, since the ridges are provided in the four corners of the storage tank, there is nothing protruding on the outer surface of the ridge, and when the storage block bodies are stacked, the ridges serve as a guide for the storage block bodies, thereby improving the workability.

  Storage tanks constructed by the storage block body, dredging, and inspection holes are stored together in the water shielding sheet, so there is a problem of water leakage between the storage tank constructed by the storage block body and the fence, and functional paralysis during an earthquake. This makes it difficult for problems to occur.

  An embodiment of the rainwater storage device of the present invention will be described. FIG. 1 is a plan view of a rainwater storage device 1 in which four ridges are provided at the corners of the storage tank 3. For the sake of explanation, the water shielding sheet is omitted, and the storage tank 3 in which the storage block bodies 2 are stacked is shown in FIG. The storage block body 2 is not shown, but is indicated by an oblique phantom line (two-dot chain line), and is shown as a schematic diagram in order to clarify the relationship between the ridge 4 and the sludge groove member. 2 is an enlarged sectional view of AA in FIG. 1, FIG. 3 is an enlarged sectional view of BB in FIG. 1, FIG. 4 is an enlarged sectional view of CC in FIG. 1, and FIG. FIG.

The storage device 1 according to the present invention is constructed by stacking a plurality of storage block bodies 2 made of synthetic resin having a gap in the horizontal direction and stacking a plurality of stages of storage tanks 3 stacked in a plurality of stages. The troughs 4 and / or 5 are installed at the four corners of the storage tank 3, and the rainwater inlet 12b and the rainwater outlet 18b are provided.
Further, a drainage groove 7 composed of a drainage groove member 6 formed by connecting the drainage groove block 23 formed with the drainage hole 23 a communicating with the storage tank 3 in the longitudinal direction is arranged around the storage tank 3. It is installed.

As shown in FIG. 5, the outer dimensions of the width a1 and the depth b1 of the troughs 4 and / or 5 are dimensions that are each an integral multiple of the width a depth b of the storage block body 2. The width a1 and the depth b1 can be different integer multiples. For example, the width a1 of the ridge 4 is made equal to the width a of the storage block body 2, and the depth b1 of the ridge 4 is made twice the depth b of the storage block body 2.
The storage block body 2 and the eaves are inevitable in manufacturing error and construction error. Therefore, when “integer multiple” is used in the present invention, an error of up to about 15 mm is regarded as an allowable range in the present invention.

  The outer dimensions of the width, length and height of the drainage groove block 23 are respectively integral multiples of the width a, length (depth) b and height (not shown) of the storage block body 2. Has been. As in the case of 桝 4, the width, length, and height can be different integer multiples.

Next, based on a figure, the Example of the storage apparatus 1 which has arrange | positioned four baskets is demonstrated in detail.
In FIG. 1, reference numeral 3 denotes a storage tank in which a large number of storage block bodies 2 having gaps are juxtaposed in the horizontal direction and a large number are stacked vertically. In this embodiment, the storage block body 2 has a width a of about 0.5 to 2 m, a depth b of about 0.5 to 2 m, a height c of about 0.1 to 2 m, and is made of polypropylene resin. It is injection molded.

  Three inflow tubs 4 a, 4 b, 4 c are arranged at the corners of the storage tank 3 at the four corners of the storage tank 3, and an outflow tub 5 is arranged at the remaining one corner of the storage tank 3.

  Around the bottom surface of the storage tank 3, rainwater and mud that have flowed into the storage tank 3 together with rainwater are discharged from the rainwater outlet 18 b of the outflow tank 5. Sludge groove members 6a, 6b, 6c, 6d are provided between the inflow rod 4c, between the inflow rod 4c and the outflow rod 5, and between the outflow rod 5 and the inflow rod 4a. 7a, 7b, 7c, 7d are formed, and an inflow tub 4 and an outflow tub 5 are provided at the ends thereof.

  The drainage groove members 6 a, 6 b, 6 c, and 6 d are arranged so that the bottom surfaces thereof are substantially flush with the bottom surface of the storage tank 3, and it is necessary to provide the drainage groove members 6 below the bottom surface of the storage tank 3. As will be described later, the storage tank 3 can be installed on a flat and sufficiently stable base surface.

  Moreover, in order to discharge the water and mud that flowed into the storage tank 3 to the outflow trough 5 without producing dead water, the drainage grooves 7 a, 7 b, 7 c, 7 d are inclined so as to incline toward the outflow trough 5. 1 may be configured. The drainage groove members 6a, 6b, 6c, 6d and the drainage grooves 7a, 7b, 7c, 7d have substantially the same configuration except for the length. They are referred to as “member 6” and “drainage groove 7”.

  The inflow trough 4 includes a trough lower member 8 constituting the bottom of the inflow trough 4 and a plurality of box-shaped trough intermediate members sequentially connected on the trough lower member 8, that is, the trough first intermediate member 9, the trough first 2, an intermediate member 10, a third intermediate member 11, a fourth intermediate member 12, and a fourth upper intermediate member 13 that is constructed on the fourth intermediate member 12 and constitutes the top plate of the inflow rod 4. The second intermediate material 10 is connected to the drainage groove member 6. The fourth intermediate member 12 is constructed such that the water passage hole 12 a is positioned near the upper end surface of the storage tank 3.

  The heel lower member 8, the heel first intermediate member 9, the heel second intermediate member 10, the heel third intermediate member 11, the heel fourth intermediate member 12, and the heel upper member 13 are appropriately connected so as to cope with an earthquake or the like. The adjacent members are connected to each other by the means. As will be described later, the connecting means is configured not to protrude from the outer surfaces of these members constituting the inflow rod 4.

  As shown in FIG. 5, the outer dimensions of the width a1 and the depth b1 of the first to fourth intermediate members 9, 10, 11, and 12 constituting the inflow rod 4 are the width a and the depth b of the storage block body 2, respectively. The size is an integral multiple of. 1 and 5, the outer dimensions of the width a1 and depth b1 of the ridge 4 are the same as the width a and depth b of the storage block body 2.

  水 The two walls facing the drainage groove member 6 of the second intermediate member 10 are respectively provided with water passage holes 10a and 10a communicating with the drainage groove 7 formed in the drainage groove member 6 described later. It has been. The second intermediate member 10 is constructed so that the lower ends of the water passage holes 10 a and 10 a are flush with the lower end of the drainage groove 7. In this embodiment, the water passage holes 10 a and 10 a have the same shape as the drainage groove 7, and the cross-sectional area thereof is larger than that of the drainage groove 7.

A water passage hole 12 a communicating with the storage tank 3 is provided on the side of the storage tank 3 of the fourth intermediate member 12, and a wall facing the outside of the fourth intermediate member 12 is arranged outside the storage tank 3. An inflow port 12b connected to a rainwater inflow pipe 12c that is provided and guides rainwater to the storage tank 3 is provided. Both the water passage hole 12 a and the inflow port 12 b are disposed at positions where the upper ends thereof substantially coincide with the upper end surface of the storage tank 3.
Reference numeral 14 is a manhole cover, and reference numeral 15 is a step for the operator to move up and down in the basket 4.

The outflow basin 5 has the same configuration as the inflow basin 4 and has an appropriate size.
On the storage tank 3 side of the third intermediate member 19, a water passage hole 19 a communicating with the storage tank 3 is provided. The water passage hole 19 a is disposed at a position where the upper end thereof substantially coincides with the upper end surface of the storage tank 3. The water flow hole 19a has a function of storing rainwater flowing into the storage tank 3 also in the outflow gutter 5, and can be used as a jet water injection port described later.

  The drainage groove member 6 is constructed by connecting a plurality of drainage groove blocks 23 in the longitudinal direction. The outer dimensions of the width, length and height of the drainage groove block 23 constituting the drainage groove member 6 are respectively the width a, length (depth) b and height (not shown) of the storage block body 2. On the other hand, the size is an integral multiple.

  A mud hole 23 a that communicates with the storage tank 3 is provided on the side wall of the drain mud groove block 23 in order to discharge the mud that flows into the storage tank 3 together with rainwater to the rainwater outlet 18 b of the outflow gutter 5. An appropriate number of the mud drain holes 23 a are provided according to the length of the mud groove block 23. The long drainage groove block 23 is provided with two drainage holes 23a, and the short drainage groove block 23 is provided with one drainage hole 23a. Further, since the drainage groove member 6 c is provided at a location inside the water storage tank 3, the drainage hole 23 a is provided on both sides of the drainage groove block 23.

  An embodiment of a connecting means for connecting between the intermediate members 9, 10, 11, 12 constituting the inflow reed 4 and between the intermediate members 17, 18, 19 constituting the outflow reed 5, and between the sludge groove blocks 23 The connecting metal fitting will be described with reference to FIGS. 6 and 7 show a connecting fitting 27 as a connecting means between the third intermediate member 11 and the fourth intermediate member 12 of the inflow rod 4 as an example. The other intermediate member of the inflow trough 4, the intermediate member of the outflow trough 5 and the drainage groove block 23 are also connected by the same means.

6 shows the fourth intermediate member 12 as an intermediate member, the same applies to other intermediate members. 6A is a plan view, FIG. 6B is a front view, and FIG. 6C is a side view.
FIG. 7 is an enlarged front view in which the heel third intermediate member 11 and the heel fourth intermediate member 12 are connected.

As shown in FIG. 6, diagonal notches having appropriate heights and widths for attaching the connecting fittings 27 are formed at the four corners on the upper end side and the four corners on the lower end side of the fourth intermediate member 12. Reference numeral 24 is a notch on the upper end side, and reference numeral 25 is a notch on the lower end side.

  As shown in FIG. 7, when the heel fourth intermediate member 12 is laminated on the heel third intermediate member 11, both the heel third intermediate member 11 and the heel fourth intermediate member 12 The notch 25 forms a coupling metal recess 26. The connecting metal 27 connects the eaves third intermediate member 11 and the fourth intermediate member 12 within the connecting metal recess 26. The entire connecting fitting 27 is housed in the connecting tool recess 26 and does not protrude from the outer surfaces of the third intermediate member 11 and the fourth intermediate member 12 and fits well.

  The storage tank 3, the inflow dredge 4 and the outflow dredge 5, and the drainage groove member 6 configured as described above have the bottom surface, the four side surfaces, and the top surface of the storage tank 3 on the foundation 31 during the construction. It is covered with the water shielding sheet 28 to be installed, and rainwater is stored in the storage tank 3 without penetrating underground. The water shielding sheet 28 that covers the upper surface of the storage tank 3 may be a separate sheet from the water shielding sheet 28 that covers the bottom surface and the four side surfaces of the storage tank 3. Further, a protective sheet (not shown) may be provided outside the water shielding sheet 28.

The construction procedure of the rainwater storage tank of the present invention will be described.
First, the ground is excavated to an appropriate depth, foundation concrete is placed, a protective sheet is provided on the foundation as necessary, and a water shielding sheet 28 is further installed.
Since the water-impervious sheet 28 covers the side surface of the storage tank 3 as will be described later, the periphery is made long.

  The drainage groove block 23 is arranged on the leveling concrete 29 and connected by the connecting fitting 27 to construct the drainage groove member 6 (6a, 6b, 6c, 6d) around the bottom surface of the storage tank 3 and lay it. On the mortar 30, the heel lower member 8, the heel first intermediate member 9, the heel second intermediate member 10, and the heel third intermediate member 11 of the inflow tub 4 are stacked and connected to each other by a connecting fitting 27. Similarly, the heel lower member 16, the heel first intermediate member 17, and the second intermediate member 18 of the outflow tub 5 are stacked on the floor mortar 30 and are connected to each other by the connecting metal fittings 27.

  Next, on the leveled concrete 29, the storage block 2 is placed side by side on the side surfaces of the inflow trough 4 and the outflow trough 5 and the side and top surfaces of the sludge groove member 6, and stacked several stages. Since the inflow rod 4, the outflow rod 5, and the drainage groove member 6 are integral multiples of the storage block body 2, cutting or processing of the storage block body 2 is not necessary.

  When the storage block body 2 is stacked several times, the fourth intermediate member 12 of the inflow trough 4 and the third intermediate member 19 of the outflow trough are stacked and connected by the connecting metal fitting 27, the storage block body 2 is stacked, and the storage tank 3 Configure.

  Next, the heel upper member 13 is stacked on the heel fourth intermediate member 12 of the inflow tub 4 and is connected by the connecting metal fitting 27. Similarly, the heel upper member 20 is stacked on the heel third intermediate member 19 of the outflow hoe 5 and is connected by the connecting fitting 27.

  When the storage tank 3, the inflow dredge 4 and the outflow dredge 5 and the drainage groove member 6 are constructed in this way, the water shielding sheet 28 is placed on the side surface of the storage tank 3, and the storage tank 3 is wrapped from the outside to provide the water shielding. To do. At the rainwater inflow port 12b of the inflow raft 4 and the rainwater outflow port 18b of the outflow raft 5, a part of the water shielding sheet 28 is cut out, and the rainwater inflow pipe 12c and the rainwater outflow pipe 18c are piped.

The top view of the rainwater storage apparatus of this invention. AA sectional drawing of the rainwater storage apparatus of this invention. BB sectional drawing of the rainwater storage apparatus of this invention. CC sectional drawing of the rainwater storage apparatus of this invention. The partial enlarged plan view of the rainwater storage apparatus of this invention. Three views of the intermediate member of the rainwater storage device of the present invention Installation drawing of connecting bracket of rainwater storage device of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rainwater storage device 2 Storage block body 3 Storage tank 4 Inflow trough 6 Drainage groove member 7 Drainage groove 8 Drainage lower member 9 Drain first intermediate member 10 Dawn second intermediate member 10a Water flow hole 11 Drain third intermediate member 12桝 Fourth intermediate member 12a Water passage hole 12b Rain water inlet 13 桝 Upper member 16 桝 Lower member 17 桝 First intermediate member 18 桝 Second intermediate member 18a Mud hole 18b Rain water outlet 19 桝 Third intermediate member 19a Water passage Hole 20 桝 Upper member 23 Drainage groove block 23a Drainage hole 26 Recess for connection fitting 27 Connection fitting 28 Water shielding sheet 31 Foundation

Claims (2)

A rainwater storage device that constructs a storage tank by laminating storage block bodies having gaps in parallel in the horizontal direction,
Inside the four corners of the storage tank and in the space formed without installing the storage block body, there are three inflow rods and one cylindrical body member stacked with an integral multiple of the storage block body width and depth. An outflow basin is formed, and around the bottom surface of this storage tank, a drainage groove block in which a drainage mud hole communicating with the storage tank is formed on the side surface with a portal section is connected to the bottom surface of the storage tank The drainage groove is formed to be flush with the inflow and outflow dredging bottoms, and the bottom surface is inclined toward the outflow dredge. A concave portion is formed in the connecting portion of the cylindrical body member and the drainage groove block to be configured, and a connecting metal fitting is installed in the concave portion so that there is no protruding portion from the outer surface, and the storage tank Storm water storage equipment, inflow basin, outflow basin, and drainage ditch are covered with water shielding sheet . The rainwater storage device according to claim 1, wherein the upper portions of the four corner ridges are integrally fixed by linking members.

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