JP2006046010A - Water storage facility for rainwater and the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water storage facility for rainwater and the like, which requires no soldering work on the construction site of a water storage facility of rain water or the like, resultantly requires no soldering machine nor a generator to be brought in the construction site, nor arrangement of skilled workers, in which a water storage bag easy to be assembled and excellent in waterproofness can be easily obtained, with easy laying work, a low cost and excellent waterproofness, in preparing the water storage bag to be set in a water storage section. <P>SOLUTION: This water storage facility for rainwater and the like is provided with a water storage bag 8, a space maintaining skeleton arranged inside the water storage bag 8 and constituted of a plurality of assembled resin skeleton blocks 4, and a water storage part 2 having a covering layer 9 covering the upper part of the space maintaining skeleton, all in the space formed by digging a ground. The water storage bag 8 is prepared by connecting at least one mating surface of the water-permeable sheet or a water semipermeable sheet 5 with a waterproof fastener 6 into a bag shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rainwater storage facility for storing rainwater or the like for use in fire prevention or watering, for example, in a building or a housing complex, particularly in a housing complex.

Conventionally, for example, to prevent rainwater from flowing into rivers suddenly during heavy rains, or in large buildings or housing estates, etc., rainwater is used as fireproof water or for watering flower beds, vegetable gardens, etc. For this reason, various attempts have been made to store a rainwater in a water storage tank provided in a vacant land around a building or housing complex, or in a basement of a bicycle storage.
In particular, in recent years, when a new housing complex is constructed in preparation for a water shortage in the summer, a storage facility for this type of rainwater or the like is often provided.

  In recent years, the effective use of rainwater is not limited to large buildings, but can be used in detached houses. Specifically, in a detached house, it is considered to be used for watering or washing a flower bed or garden, or for washing.

As a typical example of this kind, there is a water storage facility described in Patent Document 1.
As shown in FIG. 4, the ground 1 is dug down in advance to form, for example, a rectangular hole having a rectangular planar shape, and then the inner layer (including side and bottom surfaces) of the hole is lined with gravel or the like. 3 is formed.
In addition, recently, in order to prevent mud and the like from entering the inside through the gap of the lining layer 3 as much as possible, instead of gravel, the lining layer 3 is covered with a water-impervious sheet or a semi-permeable sheet to cover the side surface and the bottom surface. More and more cases are configured.

  When the lining layer 3 is formed, box-shaped resin skeleton blocks 4 are assembled vertically and horizontally in the lining layer 3 to form a space holding skeleton having a water storage space therein. When the space holding skeleton is completed, finally, for example, a resin top plate is spread on the space holding skeleton, and a water-impervious sheet or semi-permeable sheet is covered on the top plate, or this water-impervious sheet or semi-permeable sheet is further covered. The water storage section 2 is formed by forming a covering layer 9 by refilling the soil on the conductive sheet.

  Here, in FIG. 4, the code | symbol 10 has shown the inflow port for guiding rainwater to the water storage part 2, and the code | symbol 11 has shown the outflow port connected to the water pipe connected from this water storage part 2 to a river etc. .

  By the way, as the resin-made skeleton block 4, those having various shapes have been conceived so far, and there are a cylindrical type, a tray type and the like in addition to the box type described above. However, in any shape, a water storage space as large as possible can be formed inside, and there is sufficient pressure resistance against the pressure from the top of the coating layer 9, and the resin skeleton blocks 4 can be easily assembled together. And so on are designed.

Japanese Patent Publication No. 4-26648 (Japanese Patent Laid-Open No. 63-268823)

By the way, in the water storage facilities such as rainwater described above, when the lining layer 3 is formed of a water-impervious sheet or semi-permeable sheet, in order to prevent water from leaking from the joint and to prevent intrusion of earth and sand from the outside. The seam is heated and welded, and the entire reservoir is formed into a bag shape.
In this welding operation, if the water-impervious sheet or semi-permeable sheet is formed into a bag shape from the beginning, it is difficult to install the resin skeleton block 4 inside the bag. When the resin skeleton block 4 is assembled on the sheet or the semi-permeable sheet, and the installation of the resin skeleton block 4 is completed, the water-imperviousness for four surfaces constituting the side surface of the water-impermeable sheet or semi-permeable sheet on the bottom surface A sheet or a semi-permeable sheet was welded.
Therefore, it is necessary to weld the water-impervious sheet or semi-permeable sheet at the construction site of the rainwater storage facility, more specifically in the pit, and actually at the construction site of the rainwater storage facility. This work is done by bringing a welding machine into a hole. Therefore, there are the following problems.

That is, since the soil is dug up at the construction site of the water storage facility, the soil and mud easily adhere to the water-permeable sheet or semi-permeable sheet to be welded. For this reason, it is necessary to first remove dirt and mud and then perform the welding operation, which is complicated and the quality of the completed water bag is not stable.
In addition, it is difficult to confirm at the construction site of the water storage facility whether or not the welding has been completely performed after the welding work, that is, whether the waterproofness is complete. Therefore, there is no failure in the welding work. As such, skilled workers are required.
In addition, in order to use this welding machine at a construction site, a power source is required, and specifically, it is necessary to carry a moving generator together.

  These problems are particularly prominent when rainwater storage facilities are installed in detached houses. In other words, in the case of a large-scale rainwater storage facility, it is relatively easy to arrange a welding machine or a skilled worker in accordance with the construction period in advance. For example, rainwater for a detached house, etc. For small-scale facilities such as water storage facilities, it is necessary to arrange a welder and skilled workers as well as large-scale ones despite the extremely short work time. As described above, the conventional method is extremely inefficient for a storage facility such as a small-scale rainwater, and eventually the construction cost becomes high. In addition, it may be difficult to make arrangements and the construction period cannot be set.

  In view of the foregoing problems, the object of the present invention is to eliminate the need for welding work at the construction site of a water storage facility such as rainwater when manufacturing a water storage bag to be installed in a pit. There is no need to bring it in, no need to arrange skilled workers, and it is easy to assemble, and it is easy to obtain a water sachet with excellent waterproof properties. And it is providing the water storage facilities, such as rain water, excellent in waterproofness.

  In order to achieve the above object, a rainwater storage facility according to claim 1 of the present invention comprises a water storage bag and a plurality of resin skeleton blocks disposed inside the water storage bag in a space provided by digging the ground. In a water storage facility such as rainwater provided with a water storage section having a space holding skeleton assembled and a covering layer covering an upper portion of the space holding skeleton, the water storage bag is at least a water-impervious sheet or a semi-permeable sheet. It is characterized in that one seam is connected with a waterproof fastener to form a bag shape.

In the water storage facility for rainwater or the like according to claim 1, the space provided by digging the ground, that is, the inner lining layer inside the pit is made of a water-impervious sheet or a semi-permeable sheet. The at least one joint is connected with a waterproof fastener to form a bag that can be opened and closed (hereinafter referred to as a water storage bag).
However, since the waterproof fastener can be attached to the end of the water-impervious sheet or semi-permeable sheet in the factory in advance, there is no need to worry about dirt on the water-impervious sheet or semi-permeable sheet constituting the water storage bag as in the past. Compared to welding work at the construction site of many water storage facilities, it is much less.

Moreover, since it is manufactured in the factory, it is easy to check the waterproofness of the finished bag unlike the construction site of the water storage facility. Therefore, it is not necessary to prepare a skilled worker. In addition, the assembly of the bag can be performed very easily because the waterproof fastener that is welded to the joint of the water-impervious sheet or semi-permeable sheet is simply squeezed by hand.
In this way, it is easy to manufacture a water bag to replace the lining layer, and it is easy to guarantee waterproofness, and the assembly work is also easy, so the installation work is easy as a whole, the cost is low, and it is waterproof A water storage facility such as rainwater with excellent properties can be obtained.

  As described above, according to the water storage facility for rainwater and the like of the present invention, when manufacturing the water bag to be installed in the trench, welding work at the construction site of the water storage facility for rainwater or the like is unnecessary, and therefore, welding to the construction site is required. There is no need to bring in a generator or generator, no need to arrange skilled workers, easy to assemble, and easy to obtain a water bag with excellent waterproof properties. Thus, it is possible to provide a water storage facility such as rainwater that is low in cost and excellent in waterproofness.

  Hereinafter, an embodiment of a water storage facility such as rainwater according to the present invention will be described in detail with reference to FIGS.

FIG. 1 and FIG. 2 show an embodiment of a water storage bag installed in place of a conventional lining layer in a pit of a water storage facility such as rainwater according to the present invention.
In FIG. 3, the same components as those shown in FIG. 4 are denoted by the same reference numerals, and detailed description thereof is omitted.
As shown in FIG. 1 and FIG. 2, the water storage bag 8 of the present invention has a waterproof fastener in the factory in advance at each joint of a water-impervious sheet such as a rubber sheet or a semi-permeable sheet 5, 5,. 6,... 6 are attached by heat welding. When each waterproof fastener 6 is hand-tightened, the water storage bag 8 can be formed in a bag shape as shown in FIG. As each waterproof fastener 6, for example, PROSEAL (trademark) manufactured by YKK can be used.

1 and FIG. 2 have a substantially regular cubic shape, but may be a rectangular parallelepiped whose lower surface is rectangular. Of course, the shape may be gradually expanded toward the upper side. In short, the shape and size of the water storage bag 8 may be appropriately selected and determined in accordance with the shape of the water storage portion 2.
2 shows that the upper portion of the water storage bag 8 is open, but the waterproof fastener 6 is attached to each water-proof sheet or semi-water-proof sheet 5 so that another sheet of water-proof sheet or semi-water-permeable sheet 5 is placed over the open part. The water permeable sheet 5 may be welded to the upper end portion of the water permeable sheet 5 to form a completely closed water bag 8. What to do is determined according to the laying location of the water bag 8 or the like.
In addition, when a waterproof fastener 6 is welded to a necessary portion of the water-impervious sheet or semi-permeable sheet 5 so that it becomes a water storage bag 8 in the factory, the water storage bag 8 is covered with a dust-proof cover if necessary, and storage facilities such as rainwater are stored. It is preferable that the water storage bag 8 is not soiled by people.

  By the way, when the storage bag 8 is actually installed in a storage facility such as rainwater, the water storage bag 8 is deployed as shown in FIG. A water-impervious sheet or semi-permeable sheet 5a constituting the bottom surface of the water storage bag 8 is laid on the floor of the facility. In this state, the resin skeleton block 4 is assembled vertically and horizontally on the water-impervious sheet or semi-permeable sheet 5a to form a space-holding skeleton having a water storage space therein, and at a necessary time, waterproofness is required at a necessary portion. The fastener 6 is tightened, and finally, a space holding skeleton formed by assembling the resin skeleton block 4 vertically and horizontally is formed.

  Incidentally, the resin skeleton block 4 shown in FIG. 3 is a pair of bowl-shaped blocks whose upper part is enlarged and stacked upside down, but there are various other resin skeleton blocks 4 as well. Needless to say, various types of resin skeleton blocks 4 installed in the water storage bag 8 can be used even in the present invention.

In addition, if necessary, the water-impervious sheet or semi-permeable sheet 5 is previously provided with an inlet 10 for introducing rainwater to the water reservoir 2 and an outlet connected to the water pipe connected from the water reservoir 2 to a river or the like. A hole corresponding to the shape of the inflow port 10 or the outflow port 11 may be formed at a position corresponding to 11.
Further, in FIG. 3, side walls may be provided inside the water storage bag 8, specifically, between the four side surfaces of the water storage bag 8 and the resin skeleton block 4 if necessary. If the water storage part 2 is small, it is also possible to form a side wall by putting a plate-like one on each side of the water storage bag 8.

In the water storage bag 8 shown in FIGS. 1 and 2, all seams of the water-impervious sheet or semi-permeable sheet 5 are connected by the waterproof fastener 6, but the surface that does not need to be developed is used. The waterproof fastener 6 can be welded instead of being attached. For example, in FIG. 2, joints 7 and 7 on both sides of a certain water-impervious sheet or semi-permeable sheet 5, that is, only two adjacent parallel seams are connected with waterproof fasteners 6, and other seams are connected. May be welded.
In this way, the number of waterproof fasteners 6 can be minimized, and the waterproof fasteners can be used after installing the side that does not need to be unfolded on the back side during the installation work of the resin skeleton block 4. The assembly work of the resin skeleton block 4 can be started immediately without tightening 6.
In this example, the waterproof fastener 6 is welded to the joint of the water-impervious sheet or the semi-permeable sheet 5 and the other joints are thermally welded in the factory.

  According to the water storage facility for rainwater and the like of the present invention thus configured, the water storage bag 8 is fitted with the waterproof fastener 6 and can be opened and closed at the construction site, so that the installation work of the resin skeleton block is hindered. Absent. Therefore, since the waterproof fastener 6 can be welded in advance in the factory in the water storage bag 8 according to the present invention, the construction of a water storage facility such as rain water is conventionally used for the joint of the water-impervious sheet or the semi-permeable sheet 5. Unlike the case of welding at the site, the waterproof fastener 6 can be welded to each seam using a water-impervious sheet or semi-permeable sheet 5 that is less likely to get dirty. Therefore, the water storage bag 8 with stable quality can be easily manufactured. In addition, since the welding work is performed in the factory, there is no need to transport the welder to the construction site of a water storage facility such as rainwater, so there is no need to worry about the power source and no need to carry the generator.

In addition, since the waterproof fastener 6 is welded in the factory, it is easy to install a test device for checking the waterproofness of the water bag 8 that is completed in the factory, and a waterproof test of each water bag is also performed. be able to. Therefore, unlike the conventional work at the construction site of a water storage facility such as rainwater where failure of welding is not permitted, it is possible to start again, and it is not necessary to prepare a worker skilled in welding work.
Further, since the work can be performed in the factory, the work can be performed in a shorter time and more efficiently, and the dimensional accuracy of the water storage bag 8 can be easily obtained.

Meanwhile reservoir bag 8 as described above, the water amount water storage facilities such as rainwater for a 1m ³ ~5m ³ about housing, i.e., it is preferable that depth is used for water storage facility such as the following relatively small rainwater 2m . The reason is that if the water storage amount is about 5 m ³ , it is possible to use a relatively inexpensive waterproof fastener without worrying about the water depth, but if the water storage amount exceeds 5 m ³ , It is necessary to use a special waterproof fastener (for example, the above-mentioned PROSEAL (trademark) series manufactured by YKK, etc.), and the cost may increase as a result. Because there is.
Therefore, from this point of view, the water storage bag 8 is most suitable for a small-scale water storage facility such as rain water for housing, which has a water depth of 2 m or less, for example, a water storage amount of 5 m ³ or less.

According to the storage facility for rainwater and the like of the present invention constructed as described above, welding work at the construction site of the storage facility for rainwater and the like is not necessary when manufacturing the storage bag to be installed in the pit. There is no need to bring a welding machine or generator into the machine, no arrangement by skilled workers is required, and it is easy to assemble.
As a result, it is possible to provide a water storage facility such as rainwater that is easy to lay, is inexpensive, and has excellent waterproof properties.

It is an expanded view which shows the state before the assembly of one Example of the water storage bag used for water storage facilities, such as rainwater of this invention. It is a perspective view which shows one Example of the water storage bag used for water storage facilities, such as rain water of this invention. It is a longitudinal cross-sectional view which shows one Example of water storage facilities, such as rain water, of this invention. It is a longitudinal cross-sectional view which shows an example of the conventional water storage facilities, such as rainwater.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ground 2 Water storage part 3 Lining layer 4 Resin frame block 5 Water-proof sheet or semi-permeable sheet 6 Waterproof fastener 8 Water storage bag 9 Covering layer 10 Inlet 11 Outlet

Claims (1)

  In a space provided by digging down the ground, a water storage bag, a space holding skeleton configured by assembling a plurality of resin skeleton blocks arranged inside the water storage bag, and a coating layer covering an upper portion of the space holding skeleton In a water storage facility such as rainwater provided with a water storage section, the water storage bag is configured in a bag shape by connecting at least one seam of a water-impervious sheet or a semi-permeable sheet with a waterproof fastener. Water storage facilities such as rainwater.

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