JP2006046063A - Rainwater storage penetration facility utilizing recycle glass caret - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively construct a rainwater storage penetration facility for reducing the phenomenon for letting rainwater, when it rains, flow into water drain facility at a time in a concentrated manner by utilizing various optimum characteristics that a waste material such as glass scraps has and suppressing cost of construction and cost of maintenance and management. <P>SOLUTION: In this rainwater storage penetration facility 1 constructed in an underground part of a parking lot on a land developed for housing lots to reduce abrupt flow-in of rainwater when it rains into the water drain facility such as a U-shaped ditch 11 in a concentrated manner, a rainwater storage penetration layer 4 having sufficient capacity for holding predetermined amount of held water determined by porosity of glass caret 3 and the number of cavities having size for holding surface tensile of water is constructed. When water holding capability of the ground 5 in the surroundings is inferior when comparing water holding capability of the rainwater storage penetration layer 4 with that of the ground 5 in the surroundings, the rainwater storage penetration layer 4 holds rainwater in its own layer 4. When water holding capability of the ground 5 in the surroundings is superior, rainwater in the rainwater storage penetration layer 4 is made to penetrate the ground 5 in the surroundings. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is based on the use of recycled glass cullet (recycled glass scrap) to alleviate the sudden concentration of rainwater into drainage mains due to a decrease in surface rainwater infiltration area on land development sites and roads. It relates to rainwater storage and penetration facilities.

  Conventionally, rainwater underground water storage systems are disclosed in, for example, Japanese Patent Application Laid-Open Nos. 2001-73415 and 2001-115507. In both cases, the groundwater is guided to the water purification layer, and the water passing through the purification layer is stored in an underground water storage tank with an impermeable structure.

  In this way, groundwater that has been purified to some extent can be used as emergency water, irrigation for vegetation, and public water such as public toilets. Effective use of rainwater or leveling of rainwater treatment capacity is possible to some extent.

In addition, the underground water tank disclosed in Japanese Patent Application Laid-Open No. 10-1981 is connected to the rain gutter of the road side ditch and the hollow block by an inflow pipe, and a number of hollow blocks are sequentially connected to each other by a communication pipe. It is a configuration in which the rainwater is stored without being buried, and the pump is installed in the hollow block to take out the stored rainwater.
JP 2001-73415 A JP 2001-115507 A Japanese Patent Laid-Open No. 10-1981

  However, in these underground water storage systems, the construction of underground water storage tanks and other large-scale related facilities work is required, and also the maintenance is expensive, and the water content of the ground is actively and automatically increased. There was a problem of lack of ability to adjust.

  Therefore, the present invention provides a rainwater storage and infiltration facility for alleviating the phenomenon of a concentrated inflow of rainwater into a rainwater drainage facility when it rains. The purpose is to reduce the management cost and to make it possible to construct it at low cost, and to help recycle glass waste.

In order to solve the above-mentioned problems, the invention according to claim 1 is constructed in the ground such as a development site, a public facility, or around a rainwater pipe, a water collecting basin, etc. In a rainwater storage and infiltration facility that relieves sudden inflow of water into the rainwater, the desired water retention amount determined by the porosity of the glass cullet and the number of voids large enough to hold the surface tension of water using recycled glass cullet A rainwater storage and infiltration layer with a volume sufficient to hold water is constructed in the ground, and the rainwater storage and infiltration layer retains rainwater in the layer or infiltrates into the surrounding soil according to the difference in water retention capacity with the surrounding soil It is characterized by making it.
The invention according to claim 2 is characterized in that, in the invention according to claim 1, it is constructed in a basement such as a parking lot in a residential land development site, a green zone, a house, or a road.

  Invention of Claim 3 WHEREIN: In invention of Claim 1 or 2, in the comparison of the water retention capability of the said rainwater storage penetration layer and the surrounding soil, when the water retention capability of surrounding soil is inferior, rainwater storage penetration A layer retains rainwater in its own layer, or the rainwater storage and penetration layer absorbs rainwater from the surrounding soil, and the rainwater storage and penetration layer absorbs rainwater from within the layer when the surrounding soil has superior water retention capacity. Penetration into the surrounding soil.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the rainwater storage permeation layer is embedded in a water-permeable sheet made of cloth or the like and is embedded in the basement, or remains bare. It is built under the ground.

  According to a fifth aspect of the present invention, in the invention according to any one of the first to fourth aspects of the present invention, the rainwater storage / penetration layer is disposed through the inside, and has means for communicating with the layer inside the layer. A drainage flow path extending outside the layer and connected to a drainage facility such as the drainage main pipe is provided.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the drainage channel is formed in a tubular shape, and a plurality of holes provided through the pipe wall communicate with the rainwater storage and permeation layer. It is characterized by comprising.

  The invention according to claim 7 is the invention according to claim 5 or 6, wherein a number of through holes as the communication means are covered with a water-permeable sheet made of cloth or the like and are left uncovered. It is characterized by.

  The invention according to claim 8 is the invention according to any one of claims 5 to 7, characterized in that the housing side end of the tubular drainage channel is connected to a drainage path such as a rain gutter of the house. And

  The invention according to claim 9 is characterized in that, in the invention according to any one of claims 1 to 8, the rainwater storage and penetration layer is constructed using a recycled glass cullet having a particle size of approximately 7 mm or less. To do.

  The invention according to claim 10 is the invention according to any one of claims 1 to 9, wherein the rainwater storage and infiltration layer is constructed between the rainwater storage and infiltration layer and the surrounding soil from the inside of the rainwater storage and infiltration layer. In addition, it is characterized in that a recycled glass cullet layer having a reasonably large particle diameter is constructed in a predetermined thickness and range, and the delivery of rainwater is made smooth according to the difference in water retention capacity between the rainwater storage and permeation layer and the surrounding soil.

  According to the present invention, since the porosity is large, the water retention capability is large, and since water is not contained, the voids are not reduced and clogging is difficult. It is characterized by a good balance between the ability and permeability characteristics.

  That is, in the present invention, the desired water retention amount determined by the porosity of the recycled glass cullet and the size of the voids involved in the surface tension of water is determined, and a recycled glass cullet having a capacity necessary for maintaining the desired water retention amount is determined. A glass cullet accommodating portion having an expected volume sufficient to be accommodated is excavated in the ground, and a recycled glass cullet having a capacity necessary for maintaining the desired water retention amount is accommodated in the accommodating portion. As a result, when a large amount of rainwater has already been absorbed in the surrounding ground, and there is no remaining water retention capacity in the surrounding ground, that is, when the water retaining capacity of the recycled glass cullet is higher than the water retaining capacity of the surrounding ground. In addition to not allowing the recycled glass cullet to permeate into the surrounding ground, water contained in the surrounding ground can be absorbed by the recycled glass cullet side to prevent the surrounding ground from being further immersed in rainwater. On the other hand, if the surrounding ground dries and exceeds the water retention capacity of the recycled glass cullet (that is, when there is a margin of water retention capacity in the surrounding ground), rainwater can penetrate into the ground side. In this way, it automatically switches between storing and retaining rainwater and penetrating into the surrounding ground according to the difference between the water retention capacity of recycled glass cullet and the water retention capacity of the ground, so it has excellent rainwater retention and drainage. Automatic adjustment capability can be demonstrated, and maintenance management is not required.

  In addition, the recycled glass cullet can use wastes such as crushed scraps of green glass bottles that are difficult to recycle, so that material costs can be greatly reduced. In addition, a great advantage can be expected that resources can be recycled by recycling waste glass. Recycled glass cullet is used to construct the rainwater storage and penetration layer in the rainwater storage and penetration facility.

  Furthermore, since the component is glass, there is no concern that it will adversely affect the surrounding ground, and since it is alkaline, the stored rainwater is alkalized. Since this ph adjustment function is also maintained for a long time, an accompanying effect of acid rain countermeasures can also be obtained.

  The rainwater storage and penetration facility using the recycled glass cullet of the present invention is implemented as in Examples 1 and 2.

  A first embodiment of the present invention will be described with reference to FIGS. 1 and 3 show elevation sectional views of a rainwater storage and infiltration facility 1 composed of recycled glass cullet 3 constructed in a basement such as a parking lot, a green zone, a house, and a road in a residential land development site, viewed from directions orthogonal to each other. FIG. FIG. 2 shows a plan sectional view of the facility 1.

  As shown in FIGS. 1 to 3, the rainwater storage and infiltration facility 1 first excavates the ground (soil) 5 to form long rectangular bowl-shaped recesses with a predetermined dimension. This bowl-shaped recess is calculated by reversely calculating from the desired water retention amount calculated from the porosity (about 40 to 55%) of the recycled glass cullet, and the recycled glass cullet having a capacity necessary for maintaining the desired water retention amount. Cut to a size with the expected volume sufficient to accommodate. And the water-permeable cloth penetration sheet | seat 2 shown with a broken line is arrange | positioned in contact with the surrounding wall surface and bottom face of the recessed part, the inside of this penetration sheet | seat 2 is packed with the recycle glass cullet 3 so that it may be wrapped in this, and it is hatched The illustrated rainwater storage and penetration layer 4 is constructed. The rainwater storage and permeation layer 4 is disposed so that the upper surface of the rainwater storage and permeation layer 4 substantially coincides with the groundwater level (HWL), and the upper surface of the rainwater storage and permeation layer 4 is also covered with the permeation sheet 2.

  The recycled glass cullet 3 (hereinafter abbreviated as “glass cullet 3”) is intended to recycle glass scraps that are difficult to regenerate, such as a crushed green glass bottle. In constructing the rainwater storage and permeation layer 4, it is not always necessary to wrap the glass cullet 3 with the permeation sheet 2, and the bare glass cullet 3 may be embedded in the ground as it is without the permeation sheet 2. After constructing the rainwater storage and penetration layer 4, the ground surface portion 5a is backfilled.

  The rainwater storage / permeation layer 4 stores rainwater collected from the ground 5 side in the rainwater storage / permeation layer 4 or the rainwater in the layer 4 according to the difference in water retention capacity with the surrounding ground 5. Or penetrate to the side. The particle size of the glass cullet 3 to be used is a minimum of 0.1 (powder) to a maximum of 25 mm. Then, the glass cullet 3 is classified into several size groups such as 0.1 (powder) to 2 mm, 2 to 3 mm, 3 to 7 mm, 7 mm to 25 mm, etc., and classified, and the size is selected from these. And use it.

  There is a gap between the particles of the glass cullet 3 in an aggregated state, and the rainwater is held in the gap by the surface tension of the rainwater entering the gap. That is, the water retention capability is generated in the rainwater storage and permeation layer 4 made of the glass cullet 3 by having a gap between the particles. The size of each gap is set such that the rainwater is held in the gap by the surface tension of the rainwater.

  The porosity of the rainwater storage and permeation layer 4 made of the glass cullet 3 is large, and the porosity of each of the particle size groups is 40 to 50% with respect to 10% of normal sand. Of these, the smaller the particle size (0 to 2 mm), the greater the water retention capability, and the water retention capability gradually decreases as the particle size increases to 2 to 3 mm and 3 to 7 mm. Although water is retained in this way, the moisture content of the glass cullet 3 alone is 0 to 0.3%, and no moisture is contained. Therefore, since the volume does not increase even if the water is retained, the voids are not decreased, the water retaining ability of the rainwater storage and permeation layer 4 is not lowered with time, and the water retention has a long life. Although the same phenomenon can be seen in sand and the like, these increase in volume when retained, resulting in clogging, and a decrease in water retention capacity over time is inevitable.

  As shown in FIG. 1, a perforated pipe 6 (drainage flow path) is disposed through a rainwater storage and permeation layer 4 made of glass cullet 3 in the horizontal direction. The perforated pipe 6 inside the rainwater storage and permeation layer 4 is provided with a large number of through holes 7 (communication means) on the pipe wall as shown in the figure, and communicates with the surrounding rainwater storage and permeation layer 4 through the through holes 7. .

  Moreover, although illustration is abbreviate | omitted, the housing land side (rain water receiving side) edge part of the perforated pipe | tube 6 is connected to the drainage path from the rain gutter of a house. And the outflow end of the perforated pipe 6 is connected to the rain water tank 8 made of vinyl chloride. A crushed stone layer 9 is disposed at the bottom of the rainwater tank 8.

  Thus, the rainwater in the perforated pipe 6 is retained and stored in the rainwater storage and permeation layer 4, and when the storage capacity is exceeded, the rainwater in the rainwater storage and permeation layer 4 enters the perforated pipe 6 through the through hole 7 ( Return), and further flows into the rainwater basin 8. When the rainwater in the raft 8 reaches the groundwater level (H, WL), it is drained to the U-shaped groove 11 (drainage facility) through the overflow pipe 10.

  In residential land development sites, the area through which rainwater penetrates directly into the ground is reduced by the amount of buildings. Since rainwater falling on the building is drained through drainage channels such as rain gutters, the rainwater penetration capability of the ground is reduced, and rainwater that flows directly into the U-shaped groove 11 and the like increases. Therefore, in order to alleviate the amount of inflow per hour, a rainwater storage and infiltration facility 1 is provided in the middle of the construction site (building) and the U-shaped groove 11 (drainage facility), and rainwater is stored in the rainwater storage and infiltration layer 4 to save time. To drain.

  When building a residential land, the storage capacity per hour required for the rainwater storage infiltration layer 4 is derived from the infiltration capacity (infiltration value) of the ground, and the particle size of the glass cullet 3 and the volume of the rainwater storage infiltration layer 4 are determined and constructed. .

  The rainwater storage and infiltration layer 4 made of glass cullet 3 allows rainwater to permeate the surrounding ground 5 when the surrounding ground 5 has superior water retention capacity (when the surrounding ground 5 has sufficient capacity), and conversely When the water retention capacity of the ground 5 decreases (when the water retention capacity of the surrounding ground 5 is no longer enough), rainwater is stored in the rainwater storage and permeation layer 4 of its own. The switching between the storing action and the osmotic action is automatically performed, and there is no need for labor. It can be expected to automatically prevent the surrounding ground 5 from being liquefied due to excessive water retention.

  Further, since the glass cullet 3 is alkaline, the stored rainwater is alkalized. For example, when this pH adjustment function is calculated based on the annual average rainfall in Japan, there is a trial calculation that it will last for more than 7 years, and the pH adjustment function of the rainwater storage and infiltration layer 4 made of glass cullet 3 can also be used over a long period of time. .

  Furthermore, as the material for the rainwater storage and permeation layer 4 made of glass cullet 3, for example, waste (waste) such as green glass bottles that are difficult to recycle is used. Since the improvement effect is obtained and the component of the rainwater storage and permeation layer 4 is glass, there is no fear of adversely affecting the surrounding ground 5 due to the embedded construction.

  In addition, since the glass has a low thermal conductivity, the rainwater storage and penetration layer 4 can be expected to reduce the temperature change in the ground.

A second embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a plan sectional view of a rainwater storage and penetration facility 1a composed of a recycled glass cullet 3 (hereinafter abbreviated as “glass cullet 3”) constructed in the basement of the parking lot in the residential land development site similar to the first embodiment. FIGS. 5 and 6 are both elevational cross-sectional views, which are a cross-sectional view taken along a line XX and a cross-sectional view along a line YY in FIG. A duplicate description of the characteristics of the same constituent elements as in the first embodiment, for example, the glass cullet 3, is omitted.
As shown by broken lines in FIGS. 4 to 6, the rainwater storage and penetration layer 4 made of the glass cullet 3 according to the present embodiment is the road boundary line 12 or the adjacent ground boundary line 13 in a state where the glass cullet 3 is wrapped with the water permeable sheet 2. In the parking lot 14 in contact with the boundary, etc., it is embedded in the basement in the form of a rectangular shape in plan view indicated by a broken line (see FIG. 4).

  And the perforated tube 6a (drainage channel) shown by the broken line concentrically and in the same shape (curved tube) penetrating the inside of the rainwater storage permeation layer 4 constructed by selecting the glass cullet 3 having a particle size of 0.1 to 25 mm Is arranged. A through-hole 7 is provided on the peripheral wall of the perforated tube 6a, and a water-permeable sheet 2a is wound around it. Note that the water-permeable sheet 2a covering the through-hole 7 is not necessarily wound, and may be left bare as in the first embodiment.

  The housing land side (rainwater receiving side) end of the perforated pipe 6a is connected to the inflow pipe 15 of the drainage path from the rain gutter of the house through the rain water final gutter 16, and the drainage from the gutter of the house is perforated pipe 6a. Flow into. The other end on the road side (rainwater drainage side) is connected to the rainwater main pipe 18 (drainage facility) through the rainwater final connection rod 17 and the rainwater connection pipe 17a.

  On the other hand, a crushed stone layer 19 is disposed on the surface above the rainwater storage and infiltration layer 4 made of the glass cullet 3, and a crushed stone layer 19 is disposed on the surface to form an impermeable surface. In addition, a bare bottom reservoir permeation layer 4 a made of coarse glass cullet 3 having a diameter larger than that of the rainwater reservoir permeation layer 4 is provided below the rainwater reservoir permeation layer 4. The bottom storage / permeation layer 4a is weaker in water retention and greater in water permeability than the rainwater storage / permeation layer 4 thereabove.

With such a configuration, according to the present embodiment, rainwater that has flowed from the rain gutter of the house into the perforated pipe 6a through the inflow pipe 15 passes through the through hole 7 (communication means) and the outer permeation sheet 2a and is surrounded by The water is retained in the rainwater storage / permeation layer 4 so that the rainwater main pipe 18 does not flow at once. When the water retention capacity of the rainwater storage / osmosis layer 4 is reduced, the rainwater is sucked out to the lower ground 5 through the bottom storage / osmosis layer 4a having higher water permeability, thereby causing a rapid flow into the rainwater main 18. Alleviated.

  A third embodiment of the present invention will be described with reference to FIGS. 7 and 8 are elevational sectional views of a rainwater storage and penetration facility 1b made of recycled glass cullet 3 (hereinafter abbreviated as glass cullet 3) constructed in the underground of the gutter. The overlapping description of the characteristics of the same constituent elements as those in the first and third embodiments, for example, the glass cullet 3, is omitted.

  The side groove 31 is a groove provided at an end portion of the road 34 whose surface is paved with asphalt 33 or the like for drainage of the road 34 or a walking road boundary (not shown). The water collected in the side groove 31 is sent to a sewer pipe through a water collecting basin 32 provided at an appropriate interval.

The rainwater storage and permeation layer 4 made of the glass cullet 3 is constructed by burying the glass cullet 3 in the state where the glass cullet 3 is encased in the water permeable sheet 2 and embedded in the surroundings of the side groove 31 and the water collecting basin 32 and the road 34. Incidentally, although the water permeable sheet 2 is assumed to be a cloth or the like that can permeate only rainwater and can prevent the diffusion of the glass cullet, it may be replaced with a crushed stone or the like.

  With such a configuration, rainwater due to rain on the road 34 flows into the side groove 31 and is retained in the rainwater storage and permeation layer 4 through the asphalt 33. Moreover, the rainwater that has flowed from the road 34 to the gutter 31 flows into the water collecting basin 32 or is retained in the rainwater storage and permeation layer 4 constructed around the gutter wall 35 of the gutter 31. become. In addition, the rainwater that has flowed from the lateral groove 31 to the water collecting basin 32 is sent to the sewer, or is retained in the rainwater storage and permeation layer 4 that is constructed around the groove wall 35. This prevents rainwater from flowing into the sewer at a stretch. When the water retention capacity of the rainwater storage and permeation layer 4 is reduced, the rainwater is sucked out to the lower ground 5 through the water-permeable sheet 2, thereby reducing the sudden flow into the rainwater main 18.

  As described above, the third embodiment of the present invention constructed around the lower portion of the road 34, the gutter 31, and the drainage basin 32 also obtains the same effects as those of the first and second embodiments described above. Is possible. In particular, in the third embodiment constructed in the lower part of the road 31 and the like, when rainwater retained in the rainwater reservoir permeation layer 4 evaporates, the temperature of the asphalt 33 and the groove wall 35 can be lowered by the heat of vaporization. Since it becomes possible, it becomes useful also in the point that a road surface can be cooled especially in summer.

  In the above-described embodiment, the case where the rainwater storage and penetration layer 4 is constructed around a green zone, a house, a basement of a road, a gutter 31, a rainwater pipe, a water collecting basin 32, etc. will be described as an example. Yes. Of course, it is sufficient that one of these is constructed.

  In addition, the rainwater storage and penetration facilities 1, 1a, 1b to which the present invention is applied may be constructed underground such as a development site or a public facility. Here, the development site is due to the following development activities. In other words, development activities are 1) development activities conducted in urbanized areas whose scale is less than the scale stipulated by the Cabinet Order, and 2) development activities conducted in urbanization adjustment areas, which are agriculture, forestry or fishery. For the purpose of providing for the construction of buildings provided for government ordinances for those who conduct these services, or for the construction of buildings provided for the residence of those who carry out these operations, 3) Station buildings or other railway facilities, social welfare facilities, medical facilities, It is a development act to be used for the construction of schools, public halls, substations and other public buildings required by the government ordinance similar to these under the School Education Law.

  Public facilities include airfields, railways, roads, and the like.

It is an elevation sectional view of the rainwater storage penetration facility which consists of glass cullet in the 1st example of the present invention. It is a plane sectional view of the rainwater storage penetration facility which consists of glass cullet in the 1st example. It is an elevational sectional view of the direction orthogonal to FIG. 1 of the rainwater storage and penetration facility made of glass cullet in the first embodiment. It is a plane sectional view of the rainwater storage penetration facility which consists of glass cullet in the 2nd example of the present invention. It is XX sectional drawing of FIG. It is YY sectional drawing of FIG. It is an elevation sectional view of the rainwater storage penetration facility which consists of glass cullet in the 3rd example of the present invention. It is other sectional drawing of the rainwater storage penetration facility which consists of glass cullet in 3rd Example.

Explanation of symbols

1,1a, 1b Rainwater storage and infiltration facility 2,2a Infiltration sheet 3 Recycled glass cullet, glass cullet 4 Rainwater storage and infiltration layer 4a Bottom storage infiltration layer 5 Ground (soil)
5a Surface part 6, 6a Perforated pipe (drainage channel)
7 Through hole (communication means)
8 Rainwater trough 9 Crushed stone layer 10 Overflow pipe 11 U-shaped groove (drainage facility)
12 Road boundary line 13 Adjacent land boundary line 14 Parking lot 15 Inflow pipe 16 Rainwater final pipe 17 Rainwater final connection pipe 17a Rainwater connection pipe 18 Drain main (drainage facility)
19 Crushed stone layer 20 Concrete

Claims (10)

  Recycled in rainwater storage and infiltration facilities that are built around development sites, public facilities, etc., and around rainwater pipes, water collection basins, etc., and mitigate the rapid concentration of rainwater into drainage facilities such as drainage mains during rainfall. Using a glass cullet, a rainwater storage and infiltration layer with a volume sufficient to hold the desired water retention determined by the porosity of the glass cullet and the number of voids large enough to hold the surface tension of water is built in the ground. A rainwater storage and infiltration facility using recycled glass cullet, wherein the rainwater storage and infiltration layer retains rainwater in the layer or infiltrates into the surrounding soil according to a difference in water retention capacity with the surrounding soil.    The rainwater storage and penetration facility using recycled glass cullet according to claim 1, wherein the facility is constructed in a basement such as a parking lot, a green zone, a house, a road, etc. in a residential land development site.   In the comparison of the water retention capacity between the rainwater storage and permeation layer and the surrounding soil, if the water retention capacity of the surrounding soil is inferior, the rainwater storage and permeation layer retains rainwater in its own layer, or rainwater from the surrounding soil is stored as rainwater. The recycled glass according to claim 1 or 2, wherein when the infiltration layer absorbs and retains water and the water retention capacity of surrounding soil is superior, the rainwater storage and infiltration layer infiltrates rainwater from the inside of the layer into the surrounding soil. Rainwater storage and penetration facility using cullet.   The rainwater storage and penetration layer is wrapped in a water-permeable sheet made of cloth or the like, and is embedded in the basement, or is embedded and built in the basement as it is naked. Rainwater storage and penetration facility using recycled glass cullet.   A drainage flow disposed through the inside of the rainwater storage and permeation layer, having means communicating with the layer inside the layer and extending to the outside of the layer and connected to a drainage facility such as the drainage main A rainwater storage and penetration facility using recycled glass cullet according to any one of claims 1 to 4, further comprising a road.   6. The recycling according to claim 5, wherein the drainage channel is formed in a tubular shape, and a plurality of holes provided through the pipe wall constitute a means for communicating with the rainwater storage and permeation layer. Rainwater storage and penetration facility using glass cullet.   The rainwater storage and infiltration using recycled glass cullet according to claim 5 or 6, wherein a plurality of through-holes as the communication means are covered with a water-permeable sheet made of cloth or the like and are left uncovered. Facilities.   The rainwater storage and penetration facility using recycled glass cullet according to any one of claims 5 to 7, wherein a housing side end of the tubular drainage channel is connected to a drainage path such as a rain gutter of a house. .   The rainwater using recycled glass cullet according to any one of claims 1 to 8, wherein the rainwater storage and permeation layer is constructed using a recycled glass cullet having a particle size of approximately 0.1 mm to 25 mm. Storage and infiltration facility.   In constructing the rainwater storage and permeation layer, a recycled glass cullet layer having a moderately larger particle size than the inside of the rainwater storage and permeation layer is constructed between the rainwater storage and permeation layer and the surrounding soil in a predetermined thickness and range. The rainwater storage and penetration facility using recycled glass cullet according to any one of claims 1 to 9, wherein the delivery of rainwater is made smooth according to the difference in water retention capacity between the storage and penetration layer and surrounding soil.

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