JP2007023580A - Reservoir facility for rainwater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reservoir facility for rainwater capable of dispensing with welding work at construction site for the reservoir facility for rainwater and dispensing with necessity for bringing a welding machine and a power generator into the construction site and necessity of arrangements for ensuring a skilled worker and having a lining layer being easily assembled. <P>SOLUTION: This reservoir facility for rainwater is constituted by assembling a plurality of resin-made skeleton blocks 4 in a dug hole 2 which is provided by digging down the ground 1 and whose upper part is opened to form a space holding skeleton 5, forming a side wall 40 at the outer periphery of the space holding skeleton 5, spreading a plurality of top plates 6 all over on an upper face of the space holding skeleton 5, and providing a covering layer 7 on the top plates 6. The side wall 40 has a plurality of side plate supporting columns 20 erected at a predetermined interval at the outer periphery of the space holding skeleton 5 and a plurality of side plates 30 whose both ends are supported between adjacent side plate supporting columns 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a storage facility such as rainwater formed in the basement of a site such as a building or an apartment house.

Conventionally, for example, in large buildings or housing estates, rainwater is used as fireproof water, used for watering flower beds, vegetable gardens, etc. For the purpose of storing water and then draining it with a time lag, a water storage tank is formed in the open space around buildings and housing complexes, or in the basement of bicycle storage, etc., and rainwater is stored or temporarily stored in it. Various attempts have been made.
In particular, this type of storage facility is often provided when building a new housing complex in preparation for water shortages in the summer.

As a typical example of this type, there is a storage facility such as rainwater described in Patent Document 1.
As shown in FIG. 7, the ground 1 is dug down in advance to form, for example, a rectangular hole 2 having a rectangular planar shape, and then the inner surface (including side and bottom) of the hole 2 is made of gravel, or When it is desired to prevent mud or the like from entering the inside of the pit 2 as much as possible, it is covered with a water-impervious sheet, a water-permeable sheet, or a semi-permeable sheet instead of gravel.
Specifically, in the case of a storage-type storage facility that uses this storage facility for fire prevention or water spraying, use a water-impervious sheet or an infiltration-type storage facility that drains rainwater with a time lag. When using, cover with gravel, water-permeable sheet or semi-permeable sheet.

Now, in order to form the lining layer 3 on the bottom and side surfaces of the pit hole 2, for example, if the bottom and side surfaces are covered with a water permeable sheet, the resin as shown in FIG. The skeleton block 4 is assembled vertically and horizontally, that is, vertically and horizontally to form a space holding skeleton 5 having a water storage space inside.
Incidentally, the resin skeleton block 4 shown in FIG. 8 has a cylindrical support column 15 and a planar rib 16 formed at a right angle to the support column 15 at one end of the support column 15. Fits another resin skeleton block 4 with the skeleton block 4 upside down, and a projection 17 formed on the end surface of the support column 15 and a fitting hole 18 into which the projection 17 of the counterpart resin skeleton block 4 is fitted. Together, the two resin skeleton blocks 4 are integrated.

When the space retaining skeleton 5 is formed in the trench 2 by sequentially combining the resin skeleton blocks 4, the bottom and side permeable sheets that are expanded so as to surround the space retaining skeleton 5 are aligned. The eyes are welded with a welding machine such as a gas burner. Thereafter, when a resin top plate 6 is laid on the resin skeleton block 4 positioned at the uppermost stage of the space holding skeleton 5 and a water-permeable sheet is further covered on the top plate 6, for example, A seam with a water-permeable sheet surrounding the space holding skeleton 5 is also welded, and finally, soil is backfilled thereon to form the coating layer 7. That is, the covering layer 7 may be formed only with soil, or may be formed with soil and a water-permeable sheet.
In this connection, the seam of the water-permeable sheets is welded in this way because when the earth and sand flows into the space holding skeleton 5 from the outside through the seam, the sediment settles on the bottom surface of the space holding skeleton 5 and changes over time. This is to prevent this because the water storage space is reduced and the amount of stored water is reduced.

  Here, in FIG. 7, reference numeral 11 denotes an inflow path for guiding rainwater to the pit 2, reference numeral 12 denotes a sedimentation tank for precipitating mud in rainwater flowing into the pit 2 from the inflow path 11, and reference numeral Reference numeral 13 denotes a manhole cover placed on the settling tank 12.

  By the way, as the resin skeleton block 4, various shapes other than the shape described above have been proposed, but any shape can form a water storage space as large as possible inside, and particularly vertical. It is designed in consideration of at least three points: sufficient pressure resistance against pressure from the direction, and easy assembly of the resin skeleton blocks 4.

JP-A 63-268823

As described above, for example, when the lining layer 3 is formed of a sheet such as a water-permeable sheet or a water-impervious sheet, in order to prevent intrusion of earth and sand from the outside via the sheet joint, Welded with a gas burner.
In this welding operation, if the sheet is made into a bag shape from the beginning, it is difficult to assemble the resin skeleton block 4 inside the sheet. Therefore, for example, on the water-permeable sheet previously laid on the bottom surface of the hole 2. When the resin skeleton block 4 was assembled and the assembly of the resin skeleton block 4 was completed, the four permeable sheets constituting the side surfaces were welded to the bottom permeable sheet.
For this reason, this water-permeable sheet must be welded in the construction site of the storage facility for rainwater or the like, more specifically, in the trench hole 2, and in fact, in the trench hole 2 that is the construction site of the storage facility. This work is carried out by bringing a welding machine into. Therefore, there are the following problems.

Since soil is dug up at the construction site of the water storage facility, soil and mud are likely to adhere to the sheets to be welded. Therefore, it is necessary to perform the welding work after first removing dirt and mud, the work is complicated, and the quality of the finished welded part is not stable.
In addition, after welding work, it is difficult to confirm whether or not welding has been performed completely at the construction site of the storage facility. Therefore, skilled workers are required for welding work so that there is no failure in welding. .

These problems are particularly noticeable when a storage facility is installed in a detached house or the like.
That is, in the case of a large-scale storage facility, it is relatively easy to arrange a welding machine and a skilled worker in advance according to the construction period, but for example, a small-scale storage facility for a detached house. However, in spite of the extremely short work time, skilled workers must be arranged in the same way as large-scale ones.
As described above, the conventional method is extremely inefficient especially for a small-scale storage facility, and it may be difficult to arrange and a construction period may not be set.

  In view of the above-mentioned problems, the object of the present invention is to eliminate the need for welding work at the construction site of storage facilities such as rainwater, and therefore it is not necessary to arrange skilled workers, and has a lining layer that is easy to assemble. The purpose is to provide rainwater storage facilities.

  In order to achieve the above-mentioned object, the rainwater storage facility according to claim 1 of the present invention forms a space holding skeleton by assembling a plurality of resin skeleton blocks in a pit opened by digging up the ground. A side wall is formed on the outer periphery of the space-holding skeleton, and a plurality of top plates are laid on the top surface of the space-holding skeleton. Has a plurality of side plate support columns erected on the outer periphery of the space holding skeleton at predetermined intervals, and a plurality of side plates supported at both ends between the adjacent side plate support columns. It is a feature.

According to the storage facility for rainwater and the like according to claim 1 formed in this way, the outer periphery of the space holding skeleton is surrounded by a lining layer formed by combining a plurality of side plates in a planar shape, that is, as a side wall. As in the case where the sheet is covered with a water-permeable sheet or the like, it is not necessary to weld the seam between the sheets.
As a result, it is not necessary to prepare a skilled welding worker. Specifically, when the lining layer is formed by a side wall assembled with side plates as in the present invention, it is not necessary to arrange a specially skilled worker.
Furthermore, when the side wall is formed, the side plate is straddled between the side plate support pillars erected at a predetermined interval, and both ends thereof are supported by the side plate support pillars. It can also be formed.

The rainwater storage facility according to claim 2 is characterized in that, in the rainwater storage facility according to claim 1, the side plate is supported by being fixed to the side plate support pillars adjacent to each other. Yes.
According to the storage facility for rainwater and the like according to claim 2, the side plates are fixed to the adjacent side plate support pillars with screws, for example, so that the side walls can be easily assembled and have excellent strength. Can be formed.

  Further, the storage facility for rainwater or the like according to claim 3 is the storage facility for rainwater or the like according to claim 1, wherein the side plate support column is a column having a substantially H-shaped cross section having recesses on both side surfaces, and The adjacent side plate support columns are erected so that the concave portions face each other, and the side plates are housed and supported by the concave portions of the adjacent side plate support columns. .

  According to the rainwater storage facility according to claim 3, the side plate is assembled so that both ends of the side plate are accommodated in and supported by the opposing concave portions of the adjacent side plate supporting columns having a substantially H-shaped cross section. Is very easy.

  As described above, according to the storage facility for rainwater and the like of the present invention, welding work at the construction site of the storage facility for rainwater and the like is unnecessary, and therefore, it is not necessary to arrange skilled workers and is easy to assemble. Storage facilities such as rainwater having a lining layer can be provided.

Hereinafter, embodiments of a water storage facility such as rainwater in the present invention will be described in detail with reference to the drawings.
The storage facility for rainwater and the like of the present invention is basically the same as the conventional structure except for the side wall formed by the side plates. Therefore, mainly the parts different from the conventional one will be described. Incidentally, the four side surfaces surrounding the space holding skeleton 5 in the lining layer 3 of FIG. 7 described above are replaced with side walls described below.

FIG. 1 shows one embodiment of a side wall used for a storage facility such as rainwater according to the present invention, and is a partially cut front view of the storage facility.
As shown in FIG. 1, in the rainwater storage facility of the present invention, first, if the storage facility such as rainwater is an osmotic storage facility, for example, on the bottom surface of the pit hole 2 A plurality of resin skeleton blocks 4, for example, the resin skeleton blocks 4 shown in FIG. 8, are combined vertically and horizontally to form a space holding skeleton 5 on the water-permeable sheet.

Here, how to combine the resin skeleton blocks 4 will be described in the case of the resin skeleton blocks 4 shown in FIG. First, the resin skeleton block 4 positioned at the bottom on the water-permeable sheet is placed with the planar ribs 16 side down, and the resin skeleton blocks 4 adjacent in the horizontal direction are placed, for example, at the ends of the planar ribs 16. A fitting projection or fitting hole (not shown) provided is connected and fitted with the fitting hole or fitting projection.
Next, the second resin skeleton block 4 from the bottom is incorporated on the lowermost resin skeleton block 4. Specifically, in the resin skeleton block 4 located in the second step from the bottom, the protrusion 17 is fitted to the protrusion 17 provided on the end face of the connecting portion between the supports with the end of the support 15 facing down. The mating holes 18 of the counterpart resin skeleton block 4 are fitted together to connect and integrate the two resin skeleton blocks 4 in the vertical direction.

When the resin skeleton blocks 4 are sequentially connected in this way to form the space holding skeleton 5, a side plate 30, which will be described later, is provided on the outer periphery of the space holding skeleton 5 at a predetermined interval, specifically, the center distance. A plurality of side plate support pillars 20 are erected at intervals slightly wider than the width of.
As shown in FIG. 2, the side plate support column 20 has a substantially H-shaped cross section, and therefore has recesses 21 and 21 on both sides thereof. And it is erected so that the recessed parts 21 and 21 of the adjacent side plate support pillars 20 and 20 may face each other, that is, face each other.

The side plate 30 is accommodated by inserting both ends of the side plate 30 into the recesses 21 and 21 facing each other between the adjacent side plate support columns 20 and 20 in order from the side plate 30 close to the bottom surface of the trench 2.
By the way, if soil or sand enters the space holding skeleton 5 from the outside, there is a risk that the amount of water stored in the space holding skeleton 5 may decrease with time due to the accumulation of the earth and sand. It is preferable that the contact surface at the combined portion of the side plates 30 adjacent in the vertical direction is also treated so as to make it difficult for earth and sand to enter.
For example, in this embodiment, as shown in FIG. 3, notches are provided at the upper and lower ends of the side plate 30, the lower end 36 of the upper side plate 30, and the upper end of the side plate 30 already fitted into the side plate support columns 20, 20 below. In FIG. 35, both side plates 30 are in contact with each other on both the contact surface 50 of the side plate 30 in the thickness direction and the contact surface 51 of the side plate 30 in the horizontal direction.
In this way, compared to the case where the side plates 30 are simply brought into contact with each other only with the contact surfaces in the thickness direction, the length of the intrusion path when the earth and sand try to infiltrate becomes longer, so that the earth and sand are more spatially retained It becomes difficult to invade the 5 side.

Furthermore, as a method for more reliably preventing the intrusion of earth and sand, as shown in FIG. 3A, a cushion layer 45 such as sponge or non-woven fabric is previously applied to one of the contact surfaces of either one of the side plates 30 with the counterpart plate 30. If the side plate 30 is assembled vertically as shown in FIG. 3B, the cushion layer 45 may be sandwiched by one of the contact surfaces of the side plates 30.
In this case, even if there is unevenness due to adhesion of dust or sand on the contact surface of the both side plates 30, to which the cushion layer 45 made of nonwoven fabric in this example is attached, Since the cushion layer 45 absorbs the unevenness, it prevents the intrusion of earth and sand from the uneven space. Therefore, it becomes more difficult for earth and sand to enter the space holding skeleton 5 from the outside.

In FIG. 2, on the contact surface between the side plate support column 20 and the side plate 30 having a substantially H-shaped cross section, that is, on the three surfaces of the side surface and the bottom surface of the recess 21 having a substantially H-shaped cross section, If the dimensional accuracy of the side plate 30 varies, there may be a gap between the side plate support column 20 and the side plate 30. In order to eliminate this gap, the processing accuracy of the side plate support pillars 20 and the side plates 30 may simply be increased. However, this increases the processing cost and promotes an increase in the cost of the rainwater and other storage facilities as a whole. End up. Moreover, no matter how high the processing accuracy is, it is inevitable that earth and sand adhere to the surfaces of the side plate support columns 20 and the side plates 30 at the construction site.
Therefore, for example, a sandproof tape with a so-called water-swelling material attached, which is expanded significantly when absorbing adhesive on one side of the non-woven tape and absorbing water on the other side, is provided with the side plate support columns 20 described above. It is good to affix on at least one contact surface of the three contact surfaces of the side plate 30. The side to be attached may be on the side plate support pillar 20 side or on the side plate 30 side.

  If the sandproof tape is applied in this way, even if the earth and sand try to enter the space holding skeleton 5 from the gap between the side plate support column 20 and the side plate 30 in the side plate support column 20 having a substantially H-shaped cross section. If the earth and sand enters with moisture, the water-swelling material of the sandproof tape absorbs the moisture and expands to close the gap between the side plate support pillar 20 and the side plate 30, that is, the intrusion path of water and earth and sand, Prevent intrusion of earth and sand.

4 and 5 show another embodiment of the storage facility for rainwater and the like according to the present invention. FIG. 4 is a partial cross-sectional view of the side plate support column 20 and the side plate 30 attached thereto, and FIG. The part front view is shown.
In this example, the side plate 30 is straddled between adjacent side plate support columns 20 having a rectangular cross section, and both ends of the side plate 30 are screwed to the side plate support columns 20 with fixing members 46 such as screws and nails, or struck. It is fixed. In this case, the combination of the side plates 30 adjacent to each other in the upper and lower sides may be improved in sandproof properties as shown in FIG.

  FIG. 6 shows yet another embodiment with a side wall 40 similar to the embodiment shown in FIGS. The feature of the side wall 40 in this embodiment is that a horizontal side plate support member 23 that intersects the side plate support column 20 at right angles, that is, horizontally intersects, is provided in order to further increase the mechanical strength of the standing side plate support column 20. It is. The horizontal side plate support members 23 may be provided at appropriate intervals in the vertical direction, and may be fixed with side plate support columns 20 and fixing members such as screws, or may be directly welded. In this case, the combination part of the side walls 30 adjacent in the vertical direction may be as shown in FIG. 3, for example, or the upper and lower ends of the upper and lower side plates 30 overlap the horizontal side plate support member 23 as shown in FIG. You may position and fix to. In FIG. 6, the mounting surfaces of the side plate support pillars 20 and the side plates 30 of the horizontal side plate support member 23 are flush with each other.

After the side walls 40 are formed around the space holding skeleton 5 as described above, a plurality of top plates 6 are spread on the planar ribs 16 of the uppermost resin skeleton block 4 in a zigzag pattern. As the top plate 6, for example, if a top plate 6 having a central portion whose height is higher than the peripheral portion and having a concave portion on the back surface thereof, that is, a top plate 6 having a substantially arched cross section, this top plate 6 is used. The plate 6 is preferable because it is resistant to pressure from above. Needless to say, this structure may be applied to the side plate 30.
Here, the staggered pattern means that the top plate 6 is spread over the adjacent resin skeleton blocks 4.

  By the way, according to the above description, the space holding skeleton 5 is first formed, and then the side wall is formed around the space holding skeleton 5. For example, the side plate support pillar 20 is first erected at a predetermined position, and then the resin skeleton is formed. While assembling the block 4, the side plate 30 is attached to the side plate support pillar 20 together with the block 4, and the procedure is not particularly limited. The procedure for constructing the storage facility for rainwater and the like according to the present invention may be determined in consideration of various factors such as the size of the storage facility, particularly the depth and installation location.

After the side wall 40 is formed in this way and the top plate 6 is laid on top, if necessary, the combination of the top plates 6 is placed on the non-woven fabric or sponge side with a sandproof plate such as a non-woven fabric or sponge attached to the inside. You may perform the process which earth and sand do not penetrate | invade into the space holding | maintenance frame | skeleton 5 from the outside, such as closing inside.
The sandproof plate is typically made of a resin, for example, a material having an elastic body such as non-woven fabric, sponge or rubber adhered to one surface of a strip made of PVC, and the non-woven fabric, sponge or rubber side is inside, that is, What is necessary is just to mount | wear toward the space holding | maintenance frame | skeleton 5 side.
Finally, the top plate 6 is laid down, and the soil is backfilled until the ground becomes flat to form the coating layer 7.

1 to 6, the side plate 30 is illustrated as a simple flat plate. However, in order to increase the pressure resistance, a large number of linear ribs are provided on the surface of the side plate 30 or a cross section as described above. A substantially arched plate is used, and its shape is variously devised. Of course, if the applied side pressure is not so large, it may be a simple flat plate. In the figure, all ribs are omitted so as not to complicate the figure.
Further, the cross-sectional shape of the side plate support column 20 is not limited to the substantially H-shaped or rectangular cross section shown in FIGS. 2 and 4 described above, and various types such as a substantially T-shaped cross section, for example. Is applicable. In short, if the strength of the side plate support column 20 required by the installation conditions of the storage facility such as rainwater or the required mounting method of the side plate 30 is determined each time, the cross-sectional shape of the side plate support column 20 is optimal. Good.

  In each of the above-described embodiments, only a so-called osmotic storage facility is described, but the present invention can also be applied to a so-called water storage storage facility. In that case, a water-impervious sheet is spread on the bottom surface of the trench 2 instead of the water-permeable sheet. Other than that, there is no particular change, but if it is necessary to further improve waterproofness, for example, a sand-proof tape with a water swelling material pasted on the contact surface between the side plate support pillar 20 and the side plate 30 in FIG. What is necessary is just to give the treatment of attaching.

  As described above, in the rainwater storage facility according to the present invention, the lining layer on the outer periphery of the space holding skeleton is constituted by side walls by assembling side plates that do not require much skill in the work, Moreover, because the side walls are formed by using the side plate support pillars, the side plate can be easily assembled and the mechanical strength of the side walls can be easily secured. Arrangement by the operator is also unnecessary, and it is easier to make a work plan for the storage facility.

It is a partial cutaway front view showing one example of storage facilities, such as rain water, of the present invention. It is a partial cross-sectional view of the side wall shown in FIG. The combination part of the side plates adjacent to the upper and lower sides in the side wall shown in FIG. 1 is shown, (a) is an enlarged longitudinal sectional view showing a state before the side plates are combined and (b) is a combined state. It is a partial cross section figure which shows another Example of storage facilities, such as rain water of this invention. It is a partial front view of the side wall shown in FIG. It is a partial front view which shows another Example of storage facilities, such as rain water of this invention. It is a longitudinal cross-sectional view which shows an example of conventional storage facilities, such as rainwater. It is a perspective view which shows an example of the resin-made frame | skeleton blocks used for storage facilities, such as rainwater.

Explanation of symbols

2 pit hole 3 lining layer 4 resin skeleton block 5 space holding skeleton 6 top plate 7 covering layer 15 column 16 planar rib 20 side plate support column 21 recess 30 side plate 40 side wall 45 cushion layer 46 fixing member

Claims (3)

  A space holding skeleton is formed by assembling a plurality of resin skeleton blocks in a hole formed in the upper part opened by digging the ground, and a side wall is formed on the outer periphery of the space holding skeleton. In a storage facility for rainwater or the like, in which a plurality of top plates are laid down and a covering layer is further provided on the top plate, the side walls are provided with a plurality of side plate support pillars erected at predetermined intervals on the outer periphery of the space holding skeleton. And a plurality of the side plates supported at both ends between the adjacent side plate support columns, and a storage facility for rainwater or the like.   The storage facility for rainwater or the like according to claim 1, wherein the side plate is supported by the side plate support columns adjacent to each other with both ends thereof being fixed.   The side plate support column is a column having a substantially H-shaped cross section having recesses on both side surfaces, and is erected so that the recesses of adjacent side plate support columns face each other, and the side plates are adjacent to each other. The rainwater storage facility according to claim 1, wherein both ends of the side plate support pillar are housed and supported in the recess.

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