KR102223787B1 - Retaining wall type rainfall storage tank - Google Patents

Abstract

Provided is a retaining wall type rainwater storage tank capable of performing a retaining function a landslide or collapse of a piled ground slope while storing or draining rainwater in case of rainfall. The retaining wall type rainwater storage tank is applied to be installed in a stepped area. The retaining wall type rainwater storage tank is formed as a plurality of retaining wall type rainwater storage units consecutively come in contact with each other. Each of the retaining wall type rainwater storage units includes: a body part i) in which a storage tank opened upwards is formed, having its height greater than its width; and an upper part ii) covering an upper side to be located above the body part, and applied such that trees can be planted thereon. The plurality of retaining wall type rainwater storage units include: a first retaining wall type rainwater storage unit i), and a second retaining wall type rainwater storage unit ii) coming in contact with the first retaining wall type rainwater storage unit.

Description

Retaining wall type rainwater storage tank {RETAINING WALL TYPE RAINFALL STORAGE TANK}

The present invention relates to a retaining wall type rainwater storage tank. More specifically, the present invention relates to a retaining wall type rainwater storage tank that can function as a retaining wall to prevent collapse or landslides of embankment slopes while storing or draining rainwater during rainfall.

When there is significant rainfall, such as in summer, the collapse of the embankment slope or landslide occurs a lot. Therefore, a retaining wall must be installed on the slope to prevent the collapse of the embankment slope or a landslide. Retaining walls can be installed on slopes, etc. to prevent the flow of soil.

However, if the rainy season lasts for a long time due to climate change, even if a retaining wall is installed under a mountain or on a slope such as a hillside, the soil quality becomes soft, and a collapse or landslide of a large-scale embankment slope cannot be avoided. In other words, the installation of retaining walls is not enough to prevent the collapse of the embankment slope or landslide, which gradually increases the size of the damage.

Korean Patent Publication No. 2015-0138771

It is intended to provide a retaining wall type rainwater storage tank that can prevent collapse or landslides of the embankment slope while storing or draining rainwater.

The retaining wall type rainwater storage tank according to an embodiment of the present invention is applied to be installed in a stepped area. In the retaining wall type rainwater storage tank, i) a storage tank opened to the upper side is formed inside the body part, whose height is greater than its width, and ii) the upper plate part is placed on the body part by covering the upper side and applied to plant trees thereon, respectively. A plurality of retaining wall type rainwater storage units are formed in continuous contact with each other. The plurality of retaining wall type rainwater storage units include i) a first retaining wall type rainwater storage unit, and ii) a second retaining wall type rainwater storage unit in contact with the first retaining wall type rainwater storage unit. Each main body portion of the first retaining wall type rainwater storage unit and the second retaining wall type rainwater storage unit is i) adjacent to the first convex portion and the first convex portion extending in the height direction, based on the shared surface with the first convex portion. A first outer surface in which a first concave portion that is 180 degrees symmetrical is formed, and ii) a second concave portion and a first convex portion that faces a second direction away from the first direction toward which the first outer surface faces, and corresponds to the first convex portion. And a second outer surface adjacent to and formed with a second convex portion corresponding to the first concave portion. The first convex portion of the first retaining wall type rainwater storage unit is inserted and coupled to the second concave portion of the second retaining wall type rainwater storage unit, and the second convex portion of the second retaining wall type rainwater storage unit is the first convex portion of the first retaining wall type rainwater storage unit. 1 The recess is inserted and combined.

The first convex portion may include i) a slope protruding in the first direction to form an obtuse angle with the first outer surface, and ii) a convex surface connected to the first slope and substantially parallel to the first outer surface. . The convex surface may be connected while being substantially perpendicular to the shared surface. The first concave portion includes: i) another slope that is parallel to the slope and is recessed in a second direction to form an obtuse angle with the first outer surface, and ii) a concave surface that is connected to the other slope and is substantially parallel to the convex surface. It may include. The concave surface may be connected while being substantially perpendicular to the shared surface. Each body portion may further include a first inner surface that forms a storage tank and faces the second direction and corresponds to the first outer surface. A first reinforcement portion may be formed on the first inner surface and further protrude in the second direction and corresponding to the first concave portion. Each body portion may further include a second inner surface that forms a storage tank and faces the first direction and corresponds to the second outer surface. A second reinforcement portion may be formed on the second inner surface and further protrude in the first direction and face the first reinforcement portion. The protruding thickness from the first inner surface of the first reinforcing portion may be substantially the same as the recessed thickness from the first outer surface of the first concave portion.

Each of the main bodies includes i) a drainage passage separated from the storage tank and formed under the storage tank, and ii) installed on a third outer surface connected together with the first and second outer surfaces, and in contact with the lower site forming a region, and a third It may further include a catchment port connected to the drain port through the outer surface and in communication with the drainage channel. The drainage passage is formed while penetrating the first outer surface and the second outer surface, and the drainage passage of the first retaining wall type rainwater storage unit and the drainage passage of the second retaining wall type rainwater storage unit may communicate with each other.

The catchment may include i) a pair of first sidewalls spaced apart from each other and facing each other, ii) a second sidewall connecting the pair of first sidewalls to each other and contacting the lower site, and iii) a pair of first sidewalls and a second sidewall. 2 It is enclosed by the sidewalls, is in contact with the lower surface of the drain hole, is positioned lower than the lower site and applied to be parallel to the lower site, and may include a grating positioned higher than each lower end of the pair of first sidewalls.

The top plate includes: i) a planting plate portion, which is applied to plant trees by forming an upper site forming an area thereon, ii) the upper portion of which is located above the planting plate portion and opens upward, communicates with the storage tank, and extends in the width direction. It may include an elongated water intake part, and iii) a maintenance part in contact with the water intake part and open upward to communicate with the storage tank. A plurality of through holes spaced apart from each other may be formed in the planting plate, and a permeable net applied so as to drop only water passing through the upper site into the reservoir while supporting the upper site in the through holes may be installed.

By using a retaining wall type rainwater storage tank, it is possible to effectively prevent the collapse of the embankment slope or the collapse of the slope such as a landslide. In addition, rainwater during the rainy season can be stored in a storage tank and recycled for landscaping irrigation or road cleaning, as well as preventing flooding or submersion damage. The retaining wall type rainwater storage unit forming the retaining wall type rainwater storage tank is formed in a simple rectangular parallelepiped structure, so that both manufacturing time and manufacturing cost can be reduced. The retaining wall type rainwater storage tank can maximize site utilization by performing the functions of retaining wall, planting, storage tank and drainage channel at once. Ultimately, it is possible to prevent heat flash and restore the water circulation system through the retaining wall type rainwater storage tank.

1 is a schematic exploded perspective view of a retaining wall type rainwater storage unit included in a retaining wall type rainwater storage tank according to a first embodiment of the present invention.
2 is a schematic exploded perspective view of a retaining wall type rainwater storage unit included in a retaining wall type rainwater storage tank according to a second embodiment of the present invention.
3 is a schematic enlarged plan view of area III of FIG. 1.
4 is a schematic enlarged perspective view of an area IV of FIG. 1.
5 is a diagram schematically showing a modified example of the water collecting port of FIG. 4.
6 is a schematic cross-sectional view of a retaining wall type rainwater storage unit taken along line VI-VI of FIG. 1.
7 is a schematic diagram of a state of use of the retaining wall type rainwater storage tank of FIG. 1.
8 is a photograph of a retaining wall type rainwater storage unit manufactured according to an experimental example of the present invention.

When a part is referred to as being "on" another part, it may be directly on top of another part, or other parts may be involved in between. In contrast, when a part is referred to as being "directly above" another part, no other part is involved in between.

Terms such as first, second and third are used to describe various parts, components, regions, layers and/or sections, but are not limited thereto. These terms are only used to distinguish one part, component, region, layer or section from another part, component, region, layer or section. Accordingly, a first part, component, region, layer or section described below may be referred to as a second part, component, region, layer or section without departing from the scope of the present invention.

The terminology used herein is only for referring to specific embodiments and is not intended to limit the present invention. Singular forms as used herein also include plural forms unless the phrases clearly indicate the opposite. As used in the specification, the meaning of "comprising" specifies a specific characteristic, region, integer, step, action, element and/or component, and the presence of another characteristic, region, integer, step, action, element and/or component, or It does not exclude additions.

Terms indicating a relative space such as "below" and "above" may be used to more easily describe the relationship of one part to another part shown in the drawings. These terms are intended to include other meanings or operations of the device in use together with their intended meaning in the drawings. For example, if the device in the drawing is turned over, certain parts described as being "below" other parts are described as being "above" other parts. Thus, the exemplary term “down” includes both up and down directions. The device can be rotated by 90 degrees or other angles, and terms that refer to relative space are interpreted accordingly.

Although not defined differently, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms defined in a commonly used dictionary are additionally interpreted as having a meaning consistent with the related technical literature and the presently disclosed content, and are not interpreted in an ideal or very formal meaning unless defined.

The embodiments of the present invention described with reference to the cross-sectional view specifically represent an ideal embodiment of the present invention. As a result, various variations of the illustration are expected, for example variations in manufacturing methods and/or specifications. Accordingly, the embodiment is not limited to a specific shape of the illustrated area, and includes, for example, a modification of the shape by manufacturing. For example, an area shown or described as being flat may have characteristics that are generally rough, rough, and non-linear. Also, portions shown as having a sharp angle can be rounded. Accordingly, the areas shown in the drawings are originally only approximate, and their shapes are not intended to show the exact shape of the area, and are not intended to narrow the scope of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein.

1 schematically shows a retaining wall type rainwater storage unit 100 included in a retaining wall type rainwater storage tank 1000 (shown in FIG. 7, the same hereinafter) according to an embodiment of the present invention. The structure of the retaining wall type rainwater storage unit 100 of FIG. 1 is for illustrative purposes only, and the present invention is not limited thereto. Accordingly, the structure of the retaining wall type rainwater storage unit 100 may be modified in other forms.

As shown in FIG. 1, the retaining wall type rainwater storage unit 100 includes a body portion 10 and an upper plate portion 20. In addition, the retaining wall type rainwater storage tank 1000 may further include other components as necessary.

A storage tank 101 is formed inside the main body 10. The storage tank 101 is opened above it, that is, in the +z-axis direction. Accordingly, rainwater flows in from the upper side of the main body 10 and is stored in the storage tank 101. Therefore, it can be used for this purpose when a large amount of rainwater is stored and landscape irrigation or road cleaning is required. During the rainy season, since the storage tank 101 stores a large amount of rainwater, it is possible to greatly reduce the burden on the downstream rainwater pipe. In addition, due to the simple structure of the storage tank 101, there is no need to install a separate collection well or pipeline.

The body portion 10 includes a first outer surface 103, a second outer surface 105, a third outer surface 107 and a fourth outer surface 109. The first outer surface 103, the second outer surface 105, the third outer surface 107 and the fourth outer surface 109 are interconnected. The first outer surface 103 faces the +y-axis direction, and the second outer surface 105 faces the -y-axis direction. In addition, the third outer surface 107 faces the +x-axis direction, and the fourth outer surface 109 faces the -x-axis direction.

The first convex portion 104 and the first concave portion 106 are formed on the first outer surface 103 and extend long in the z-axis direction. The first convex portion 104 protrudes from the first outer surface 103 in the +y-axis direction. That is, the first convex portion 104 protrudes in the direction toward the first outer surface 103. The first concave portion 106 is adjacent to the first convex portion 104. The first concave portion 106 is recessed from the first outer surface 103 in the -y-axis direction. That is, the first concave portion 106 is formed in a direction opposite to the direction in which the first outer surface 103 faces.

Meanwhile, the second outer surface 105 faces the -y-axis direction away from the +y-axis direction. Similar to the first outer surface 103, a second convex portion 104 ′ and a second concave portion 106 ′ are formed on the second outer surface 105 as well. The second convex portion 104' and the second concave portion 106' are adjacent to each other. The second convex portion 104 ′ corresponds to the first concave portion 106, and the second concave portion 106 ′ corresponds to the first convex portion 104. They have the same shape as each other. As a result, when the plurality of retaining wall rainwater storage units 100 are mutually coupled, the first convex portion 104 and the second concave portion 106 ′, the first concave portion 106 and the second convex portion 104 ') are combined to form an integrated retaining wall type rainwater storage tank 1000.

A maintenance tool 108 is formed on the first outer surface 103 so that an administrator can check the inside of the storage tank 101 through this. Although not shown in FIG. 1, a ladder is installed in the storage tank 101 under the maintenance unit 108 so that the manager can easily access the bottom of the storage tank 101 if necessary.

The third outer surface 107 faces the lower site and contacts the lower site. Therefore, the lower part of the storage tank 101 is buried in the lower site. In this case, rainwater flowing to the lower site is collected through the water collecting port 111 installed on the third outer surface 107. In addition, a plurality of grooves are formed on the third outer surface 107 so that rainwater rides on it and collects into the catchment hole 111. The collected rainwater is collected in the drainage passage 110 through the drain hole 1110 and is discharged to the outside. As a result, in the event of a rainy season or flood, water does not accumulate on the lower site.

The fourth outer surface 109 contacts the upper site. The fourth outer surface 109 contacts the upper site and supports the soil so that the embankment slope does not collapse or a landslide occurs. As a result, when the retaining wall type rainwater storage tank 1000 is installed on a slope or the like, collapse of the embankment slope or a landslide can be efficiently prevented.

The main body 10 further includes a drainage passage 110 and a water collecting port 111 described above. The drainage passage 110 is separated from the storage tank 101 and formed immediately below it. The drainage passage 110 passes through the first outer surface 103 and the second outer surface 105. As a result, when a plurality of retaining wall type rainwater storage units 100 are arranged side by side along the y-axis direction, the drainage passages 110 communicate with each other. Therefore, water collected through the water catch 111 can be drained. To this end, the bottom surface of the drainage passage 110 may be formed to be inclined toward the +y-axis direction or the -y-axis direction. In the case of constructing the retaining wall rainwater storage tank 1000 by arranging a plurality of retaining wall rainwater storage units 100 side by side, the arrangement order of each retaining wall rainwater storage unit 100 is determined, and the height of the floor is sequentially adjusted according to the order. Set. As a result, all floor surfaces are naturally connected to form an integrated inclined surface. That is, the height of the bottom surface of the drainage passage 110 in the second outer surface 105 is the drainage passage 110 in the first outer surface of the other retaining wall type rainwater storage unit 100 in contact with the second outer surface 105. ) And make it the same as the height of the floor. As a result, since the water flowing into the drainage passage 110 smoothly flows in one direction, water can be drained smoothly even during a rainy season or a flood.

As shown in FIG. 1, the upper plate part 20 covers the upper side of the main body part 10 and is positioned on the main body part 10. The upper plate part 20 includes a planting plate part 201, a maintenance part 203, a water intake part 205, and a leg part 207. In addition, the upper plate 20 may further include other components as necessary.

In the planting plate portion 201, an area in which a step is formed, that is, an upper site forming a slope is formed. That is, it is possible to cover the planting plate part 201 with soil, and trees are planted thereon. The retaining wall type rainwater storage tank 1000 may be integrated with soil and sand by the planting plate part 201. Therefore, the retaining wall type rainwater storage tank 1000 is not well exposed to the outside on the upper site side, which is preferable in appearance.

The upper end of the water intake part 205 is located above the planting plate part 201. Therefore, the water intake part 205 is exposed to the outside without being buried by the upper site. The water intake part 205 has a certain height from the planting plate part 201. Therefore, when soil is piled up so that the top site is located on the planting plate part 201, the height of the water intake part 205 is lowered, making it easier to access. The water intake part 205 communicates with the storage tank 101. The water intake part 205 is open to the upper side. Therefore, rainwater stored in the storage tank 101 can be removed through the water intake unit 205 and used as water if necessary. In particular, since the water intake part 205 has a shape that extends long in the width direction of the main body part 10, that is, in the y-axis direction, a plurality of water pipes are put into the storage tank 101 through the water intake part 205 to allow rainwater to flow out. You can get it out in an instant.

The maintenance unit 203 is in contact with the water intake unit 205. The maintenance unit 203 is opened upward and communicates with the storage tank 101. Although not shown in FIG. 1, a ladder is installed in the maintenance unit 203 so that an administrator can enter the storage tank 101 through the maintenance unit 203 if necessary. In addition, when dirt is floating in the storage tank 101, it is also possible to remove the dirt by putting a landing net through the maintenance unit 203. Meanwhile, although not shown in FIG. 1, in order to prevent a fall or the like, the maintenance unit 203 is normally covered with a cover or the like and locked with a lock. The facility manager has the key and can open the cover and use the maintenance unit 203 if necessary.

The mounting part 207 is formed at the lower end of the maintenance part 203 and the water intake part 205. The mounting portion 207 is placed on the body portion 10 and the upper plate portion 20 is firmly fixed on the body portion 10 along the dotted line. As a result, since the upper plate part 20 is not easily separated from the main body part 10, the retaining wall type rainwater storage unit 100 can be manufactured firmly.

2 schematically shows a retaining wall type rainwater storage unit 200 included in a retaining wall type rainwater storage tank according to a second embodiment of the present invention. Since the retaining wall type rainwater storage unit 200 of FIG. 2 is similar to the retaining wall type rainwater storage unit 100 of FIG. 1, the same reference numerals are used for the same parts, and detailed descriptions thereof will be omitted.

As shown in FIG. 2, through holes 2211 are formed in the plate portion 221 for planting. That is, the through holes 2211 are formed through the planting plate portion 221. Accordingly, water absorbed by the soil accumulated on the planting plate portion 221 may be drained down through the through holes 2211. In this case, since the soil should not flow into the storage tank 101, a permeable network 2211a is installed in the through holes 2211 to prevent soil from entering the storage tank 101. The permeable net (2211a), while supporting the upper site, only the water that has passed through the upper site falls into the storage tank (101). Therefore, drainage of the upper site is done smoothly and well.

Meanwhile, a ratio of the height H101 of the storage tank 101 to the height H110 of the drainage passage 110 may be 2.5 to 4. For example, when the height H110 of the drainage passage 110 is 1.5m, the height H101 of the storage tank 101 may be 4.3m. When the above-described ratio is too small, the storage capacity of the storage tank 101 is too low. In addition, when the above-described ratio is too large, the storage tank 101 may become too large, so that the utilization of the storage tank 101 may be relatively low. Therefore, it is desirable to maintain the above ratio.

FIG. 3 schematically shows a planar structure thereof, that is, a state viewed from the z-axis direction, by expanding the convex portions 104 and 104' and the concave portions 106 and 106' in the area III of FIG. 1. The planar structures of the convex portions 104 and 104 ′ and the concave portions 106 and 106 ′ of FIG. 3 are for illustrative purposes only, and the present invention is not limited thereto. Therefore, the planar structure can be transformed into other shapes as well. In FIG. 3, for convenience, the first convex portion 104 and the first concave portion 106 are shown as the second convex portion 104 and the first concave portion 106 by reversing the arrangement of FIG. It is shown above the convex portion 104' and the second concave portion 106'.

As shown in Fig. 3, the first convex portion 104 of the upper retaining wall rainwater storage unit 100 is inserted and coupled to the second concave portion 106' of the retaining wall rainwater storage unit 100' below. do. In addition, the second convex portion 104 ′ of the lower retaining wall type rainwater storage unit 100 ′ is inserted and coupled to the first concave portion 106 of the upper retaining wall type rainwater storage unit 100. To this end, the convex portions 104 and 104 ′ and the concave portions 106 and 106 ′ have a mutually symmetric structure.

First, the first convex portion 104 includes a convex surface 1041, a shared surface 1045, and an inclined surface 1047. In addition, the first convex portion 104 may further include other components as necessary.

As shown in FIG. 3, the convex surface 1041 protrudes from the first outer surface 103 in the +y-axis direction. Both the convex surface 1041 and the first outer surface 103 are formed along the x-axis direction. Accordingly, the convex surface 1041 and the first outer surface 103 are substantially parallel. The slope 1047 also protrudes in the +y-axis direction, and forms an obtuse angle with the first outer surface 103. The convex surface 1041 is connected to the slope 1047. The shared surface 1045 is shared by the first concave portion 106 and the first convex portion 104. The shared surface 1045 is parallel to the y-axis direction. As a result, the convex surface 1041 is connected while being substantially perpendicular to the shared surface 1045.

The first concave portion 106 includes a concave surface 1061, a shared surface 1045, and an inclined surface 1067. In addition, the first concave portion 106 may further include other components as necessary.

3, the concave surface 1061 is recessed from the first outer surface 103 in the -y-axis direction. Both the concave surface 1061 and the first outer surface 103 are formed along the x-axis direction. Accordingly, the concave surface 1061 and the first outer surface 103 are substantially parallel. The slope 1067 is parallel to the slope 1047. The slope 1067 is recessed in the -y-axis direction to form an obtuse angle with the first outer surface 103. The concave surface 1061 is connected to the slope 1067. The concave surface 1061 is substantially parallel to the convex surface 1041. The concave surface 1061 is connected while being substantially perpendicular to the shared surface 1045.

The first convex portion 104 is symmetrical 180 degrees with the first concave portion 106 with respect to the shared surface 1045. That is, when the first outer surface 103 is rotated 180 degrees based on the shared surface 1045, the shape of the first outer surface 103 is the same. That is, the first convex portion 104 and the first concave portion 106 have a shape that is mutually symmetric with respect to the shared surface 1045. Therefore, when the second concave portion 106 ′ and the second convex portion 104 ′ having a corresponding shape are coupled to each other, the gap between the first outer surface 103 and the second outer surface 105 abutting to each other is widened. They don't lose and they combine well. Therefore, it is possible to manufacture and incorporate the retaining wall type rainwater storage unit 100 of the same shape in large quantities using one mold.

On the other hand, the body portion 10 (shown in Fig. 1, the same hereinafter) includes a first inner surface 103' forming the storage tank 101 (shown in Fig. 1). The first inner surface 103 ′ faces the -y-axis direction and corresponds to the first outer surface 103. On the other hand, since the wall of the body portion 10 becomes thin due to the first concave portion 106, it is necessary to protrude the first inner surface 103 ′ by the depth of the depression of the first concave portion 106 for reinforcing strength. have. Accordingly, a first reinforcing portion 1011 is formed on the first inner surface 103 ′ to further protrude in the -y-axis direction and corresponding to the first concave portion 106. Since the first reinforcing portion 1011 corresponds to the first convex portion 104 as well, the distance between the first reinforcing portion 1011 and the first convex portion 104 is formed larger than that around the first reinforcing portion 1011. This corresponds to the first convex portion 104 to form a concave portion in the first inner surface 103 ′, and when external pressure is applied to the wall of the body portion 10 due to the formation of a concave portion, it may act as a fracture starting point. Because there is. Accordingly, the first reinforcing portion 1011 is formed to correspond to both the first convex portion 104 and the first concave portion 106.

The protruding thickness t1011 from the first inner surface 103' of the first reinforcing portion 1011 is substantially the same as the depression thickness t106 from the first outer surface 103 of the first recessed portion 106 Do. That is, the strength of the retaining wall type rainwater storage unit 100 can be properly maintained by setting the thickness of the first reinforcing portion 1011 to the depth of the first concave portion 106. On the other hand, since the first convex portion 104 and the first concave portion 106 are formed in a mutually symmetrical shape, the thickness t104 of the first convex portion 104 and the thickness t106 of the first concave portion 106 Are also substantially the same as each other.

In addition, a ratio of the width W1061 of the first concave surface 1061 to the width W1067 of the slope 1067 may be 1.5 to 2. More preferably, the ratio may be 1.5. The widths here are all defined as lengths parallel to the x-axis direction. When the rain is too small, the thickness t106 of the first concave portion 106 decreases as the slope 1067 becomes too large, so that it is difficult to efficiently combine the retaining wall rainwater storage units 100 and 100'. Conversely, when the rain is too large, the slope 1067 is bent at an almost right angle. The retaining wall type rainwater storage units 100 and 100' can be mutually coupled by natural sliding through the slope 1067, but when the slope 1067 is almost at a right angle, natural sliding is difficult. In view of this point, it is desirable to maintain the above-described ratio. The same applies to the ratio of the width W1041 of the first convex surface 1041 to the width W1047 of the slope 1047.

In addition, a ratio of the width W1061 of the first concave surface 1061 to the thickness t106 of the first concave portion 106 may be 1.2 to 2. More preferably, the ratio may be 1.4 to 1.5. When this ratio is too small, the thickness t106 of the first concave portion 106 is too large to affect the rigidity of the retaining wall type rainwater storage unit 100. In addition, when this ratio is too large, the thickness t106 of the first concave portion 106 is too small to be suitable for fastening of the retaining wall rainwater storage units 100 and 100' to each other. Therefore, it is desirable to keep the ratio within the aforementioned range.

The main body of another retaining wall type rainwater storage unit 100 ′ also forms a storage tank and includes a second inner surface 105 ′ corresponding to the second outer surface 105. The second reinforcing portion 1011 ′ is formed on the second inner surface 105 ′. The second reinforcement part 1011 ′ protrudes more than the second inner surface 105 ′ in the +y-axis direction and faces the first reinforcement part 1011. Since the second reinforcing portion 1011 ′ is functionally the same as the first reinforcing portion 1011, detailed descriptions thereof will be omitted.

4 is an enlarged schematic view of the water collecting port 111 in the area IV of FIG. 1. The structure of the catchment 111 of FIG. 4 is for illustrative purposes only, and the present invention is not limited thereto. Accordingly, the structure of the catchment 111 can be modified in other forms.

As shown in FIG. 4, the water collecting port 111 is installed on the third outer surface 107. Accordingly, rainwater flowing along the third outer surface 107 may be collected and drained from the catchment 111. The catchment 111 includes a pair of first sidewalls 1111, a second sidewall 1113, and a bottom surface 1115. In addition, the catchment 111 may further include other parts as necessary.

The pair of first sidewalls 1111 are spaced apart from each other along the y-axis direction and face each other. Since the pair of first sidewalls 1111 have a preset thickness, for example, 150mm to 200mm, they are durable and are less likely to be damaged by heavy rain or the like. In addition, it is possible to block the inflow of foreign matter from the outside.

The second sidewall 1113 extends long along the y-axis direction to interconnect the pair of first sidewalls 1111. The second sidewall 1113 is also manufactured with a preset thickness to enhance durability and prevent foreign matter from entering.

The bottom surface 1115 is surrounded by the pair of first sidewalls 1111 and the second sidewall 1113. In addition, the bottom surface 1115 is in contact with the bottom surface of the drain hole 1110. Therefore, rainwater flowing into the water collecting port 111 is smoothly treated through the drain hole 1110.

The bottom surface 1115 is positioned higher in the z-axis direction than each lower end 1111a of the pair of first sidewalls 1111. Accordingly, a space is formed below the pair of first sidewalls 1111. As a result, the lower site is filled in this space, and the catchment 111 is firmly fixed to the lower site. As a result, the retaining wall type rainwater storage unit can be stably installed.

FIG. 5 schematically shows another water catchment 211 as a modified example of the catchment 111 of FIG. 4. The enlarged circle of FIG. 5 schematically shows the cross-sectional structure of the catchment 211 cut along the line IV-IV.

As shown in Fig. 5, the water collecting port 211 may be detachably coupled. That is, the water collecting port 211 may be mounted and fixed in the direction of the dotted arrow on the protruding fixing part 1073 protruding from the third outer surface 107 in the +x-axis direction. That is, the lower recessed portion 2111 formed under the water collecting hole 211 is mounted on the protruding fixing part 1073 to fix the water collecting hole 211 to the third outer surface 107. The protruding fixing part 1073 is formed immediately below the drain hole 1110.

Therefore, as shown in the enlarged circle of FIG. 5, rainwater flowing below the grating 2113 installed on the top of the water collecting port 211 smoothly flows into the storage tank 101 through the drain 1110. The protruding fixing part 1073 may be integrally formed with the third outer surface 107. The protruding fixing part 1073 receives the load of the catchment 211 pressed on it, but is supported by the soil under it, so it can be used for a long time without damage. Meanwhile, the grating 2113 blocks foreign substances when water flows into the drain 1110. Since the grating 2113 is located in contact with the third outer surface 107, there is a low possibility that foreign substances will flow into the water collecting port 211 through the space between the grating 2113 and the third outer surface 107.

6 schematically shows a cross-sectional structure of the retaining wall type rainwater storage unit 100 taken along line VI-VI of FIG. 1. The cross-sectional structure of the retaining wall type rainwater storage unit 100 of FIG. 6 is for illustrative purposes only, and the present invention is not limited thereto. Accordingly, the cross-sectional structure of the retaining wall type rainwater storage unit 100 may be modified into other shapes.

Although not shown in FIG. 6, reinforcing bars are embedded in the retaining wall type rainwater storage unit 100. That is, it is manufactured from precast concrete (PC) using reinforcing bars as the basic frame of the retaining wall type rainwater storage unit 100. Since it is used as precast concrete, it is possible to standardize it, so it is not only easy to secure its quality, but also construction management is easy. In addition, since the retaining wall type rainwater storage unit 100 has an appropriate load and can withstand the pressure of the soil, it is possible to prevent the collapse of the embankment slope or a landslide. Since the retaining wall type rainwater storage unit 100 is pre-fabricated with precast concrete and installed where necessary, construction is simple.

As shown in Fig. 6, the right side of the retaining wall type rainwater storage unit 100 is in contact with the upper site HG, and the left side of the retaining wall type rainwater storage unit 100 is in contact with the lower site LG. In order to fix and install the retaining wall type rainwater storage unit 100 in such a stepped area, a fixing table 113 extending in the x-axis direction is formed on the right side thereof. Since the fixing table 113 is firmly mounted and fixed in the soil located under the upper site HG, the installation stability of the retaining wall type rainwater storage unit 100 can be improved. Although not shown in FIG. 6, after installing the aggregate layer on the right side of the retaining wall type rainwater storage unit 100, the exposed side of the aggregate layer may be covered with a nonwoven fabric for preliminary construction. After such preliminary construction, a retaining wall type rainwater storage unit 100 is installed.

Meanwhile, the catchment 111 formed on the left side of the retaining wall type rainwater storage unit 100 is fixed to the lower site LG. The lower site LG is located at the height of the catchment 111. The lower ends 1111a of the first sidewalls 1111 maintain a state embedded in the soil under the lower site LG by gravity. And since the bottom surface 1115 is parallel to the lower site LG and is located lower than the lower site LG, rainwater flowing above the lower site LG can be easily introduced and drained into the drainage passage 110 through the drain 1110. I can. As a result, floods can be prevented. The bottom surface 1115 is positioned higher than the lower ends 1111a of the first sidewalls 1111. As a result, the bottom surface 1115 is supported by the soil below it, so that the catchment 111 can be more firmly fixed to the lower site LG.

The leg portion 207 is fixed to the support portion 1071 and the like to stably fix the upper plate portion 20 on the body portion 10. That is, since the support portion 1071 is formed stepped, the leg portion 207 is put here, and the leg portion 207 is also adjacent to the first inner surface 103' of the storage tank 101 so that the upper plate portion 20 is attached to the body portion. (10) It can be firmly fixed on top. Since the leg portion 207 is in contact with the support portion 1071 on two surfaces, it is convenient to separate the upper plate portion 20 from the body portion 10.

7 schematically shows the state of use of the retaining wall type rainwater storage tank 1000 of FIG. 1. The enlarged circle of FIG. 7 schematically shows a combined state of the retaining wall type rainwater storage units 100 and 100'. The state of use of the retaining wall type rainwater storage tank 1000 of FIG. 7 is for illustrative purposes only, and the present invention is not limited thereto. Accordingly, the cross-sectional structure of the retaining wall type rainwater storage tank 1000 may be modified into other shapes.

As shown in FIG. 7, the retaining wall rainwater storage tank 1000 is formed by interconnecting a plurality of retaining wall rainwater storage units 100 and 100' in the y-axis direction. That is, a retaining wall type rainwater storage tank 1000 is installed in a place where a step difference between the upper site HG and the lower site LG is formed to block the soil from the upper site HG from flowing downward. The retaining wall type rainwater storage units 100 and 100' have a significant weight not only by their own weight, but also by rainwater stored in the storage tank 101 (shown in Fig. 1) therein. Therefore, even if the soil pressure of the upper site (HG) is large, it can be prevented to prevent the collapse of the embankment slope or a landslide.

To this end, the height H10 of the main body 10 is larger than the width W10 of the main body 10. Here, the height H10 means the length of the body portion 10 in the z-axis direction, and the width W10 means the length of the body portion 10 in the y-axis direction. Therefore, it is preferable to install the retaining wall type rainwater storage tank 1000 in the area where the step difference is large. The ratio of the height H10 to the width W10 may be 2 to 5. When this ratio is too small, it is difficult to install the retaining wall type rainwater storage tank 1000 in an area with a large step difference. In addition, when this ratio is too large, a large number of retaining wall type rainwater storage units 100 must be installed, resulting in high cost. Therefore, it is desirable to maintain the above ratio. Preferably, the ratio may be 2.5 to 3.

On the other hand, the height H10 may be 3m to 8m, and it varies according to the stepped area in which the retaining wall type rainwater storage tank 1000 is installed. As the height H10 increases, the storage amount of the retaining wall rainwater storage unit 100 also increases. For example, as the height H10 increases by 1m, the storage amount increases by 2 to 4 tons.

The plurality of retaining wall type rainwater storage units 100 and 100' are stably coupled to each other along the y-axis direction to prevent soil from flowing down from the upper site HG. In particular, the body portion 10 and the upper plate portion 20 may be manufactured from precast concrete in advance, transferred to a stepped area, transferred to a stepped area, and assembled by moving them by a crane to construct a retaining wall type rainwater storage tank 1000. As a result, it is possible to install the retaining wall type rainwater storage tank 1000 with simple construction. In particular, since the retaining wall type rainwater storage tank 1000 has a rectangular parallelepiped shape, its shape is simple, so it is easy to manufacture. That is, since it can be manufactured using a rectangular parallelepiped form, the manufacturing time and manufacturing cost can be greatly reduced.

The retaining wall type rainwater storage tank 1000 is easy to install as the number of the retaining wall type rainwater storage tank 1000 can be determined and installed according to the width of the area where the step is formed. In addition, it can be installed directly in a stepped area without much digging.

As shown in FIG. 7, soil may be stacked on the top plate 20 to a certain height, and trees, for example, trees may be planted. Therefore, it is possible to efficiently prevent the collapse of the embankment slope or landslides using trees as well as the artificially manufactured retaining wall type rainwater storage tank 1000.

As shown in the enlarged circle of FIG. 7, the second outer surface 105 of the retaining wall type rainwater storage unit 100 and the first outer surface 103 of the retaining wall type rainwater storage unit 100' are mutually connected in the direction of the arrow. Combine. As a result, the retaining wall type rainwater storage units 100 and 100 ′ may be in continuous contact with each other to form the retaining wall type rainwater storage tank 1000.

The drainage passage 110 communicates with each other a plurality of retaining wall type rainwater storage units 100 and 100' arranged side by side along the y-axis direction. Accordingly, rainwater flowing into the retaining wall type rainwater storage units 100 and 100' in the direction of the arrow can be efficiently drained.

Hereinafter, the present invention will be described in more detail through experimental examples. These experimental examples are for illustrative purposes only, and the present invention is not limited thereto.

Experimental example

8 shows a photograph of a retaining wall type rainwater storage unit manufactured according to an experimental example of the present invention. The retaining wall type rainwater storage unit of FIG. 8 has substantially the same appearance as the retaining wall type rainwater storage unit of FIG. 1. In the case of installing a retaining wall type rainwater storage unit having a height of about 6.5 m and a width of about 2.5 m in FIG. 8, the required site area and installation cost were calculated. In this case, the height from the top of the drainage channel to the top site was about 5m, and the height of the drainage channel was 1.5m. The retaining wall type rainwater storage unit was buried in the ground about 1.5m from the lower site.

Comparative Example 1

An L-shaped retaining wall was installed at a height of 5m. The lower part of the L-shaped retaining wall was buried under the lower site. In addition, a channel box and a storage tank were separately installed in the L-shaped retaining wall and buried under the upper site.

Comparative Example 2

Reinforced soil retaining walls were installed at a height of 5m. In other words, a number of grids were horizontally mounted on a slope, and a retaining wall made of an aggregate layer was buried in the lower site for support. In addition, a waterway box and a storage tank were installed separately from the grids and buried under the upper site.

Experiment result

In the case of the experimental example, the installation area could be minimized to about 19.6m2, and it was estimated that a construction cost of 1.3 million won/m2 was required. In contrast, in the case of Comparative Example 1, a cost of 1.45 million won/m2 was required, and safety facilities were also required according to the on-site casting, and there was a problem in that the excavation had to be excessive to fill the back of the slope. In addition, in the case of Comparative Example 2, a cost of 900,000 won/m2 was required, so that low-cost construction was possible, but there was a problem in that the cost due to the purchase of the site actually increased because a separate site for the waterway was required. In addition, it was not possible to use the site where the grid was installed.

On the other hand, in the experimental example, since the retaining wall type rainwater storage unit has a simple rectangular parallelepiped structure, it was possible to manufacture it at low cost. If the retaining wall type rainwater storage unit is not a rectangular parallelepiped but has a structure in which the lower area is wider, the installation area above becomes wider, so it is necessary to secure more site. In addition, there is a problem that is difficult to install, and construction costs increase due to excavation. On the other hand, unlike the experimental example, when the drainage passage is formed narrower than that of the storage tank, there is a problem in that a large amount of water cannot be drained during the rainy season, resulting in backflow. Moreover, since a large amount of rainfall is concentrated within a short time due to climate change, it is desirable to form a drainage channel to maximize the amount of drainage possible. That is, it is desirable to provide a drainage passage with a relatively large capacity in order to function similar to an urban deep tunnel installed underground in an urban area to prevent guerrilla heavy rain. In addition, since the holding power of the soil is weakened during the rainy season, if the drainage passage is smaller in volume than the storage tank, the installation may be overturned.

Although the present invention has been described as described above, it will be readily understood by those who are engaged in the technical field to which the present invention pertains that various modifications and variations can be made without departing from the concept and scope of the following claims.

10. Main body
20, 22. Top plate
100, 100', 200. Retaining wall type rainwater storage unit
101. Reservoir
103, 105, 107, 109. Outer side
103', 105'. Inner side
104, 104'. Convex
106, 106'. Concave
108, 203. Maintenance area
111, 211. Water catch
113. Fixture
201, 221. Planting plate
205. Water intake
207. Mounting part
1000. Retaining wall type rainwater storage tank
1011, 1011'. Reinforcement
1017, 1047, 1067. Amnesty
1041. Convex surface
1045. Shared side
1061. Concave surface
1071. Support
1073. Protruding fixing part
1110. Drain
1111, 1113. Side walls
1111a. lower
1115. Base
2111. Lower depression
2113. Grating
2211. Tong Gong
2211a. Pitching net
HG, LG. Site

Claims (10)

It is applied to be installed in the area where the step is formed, and a storage tank opened upward is formed therein, and the body portion having a height greater than its width, and
A top plate part that covers the upper side and is located on the body part, and is applied so that trees are planted thereon
As a prefabricated retaining wall rainwater storage tank formed by successively contacting each other with a plurality of retaining wall-type rainwater storage units of a rectangular parallelepiped structure each comprising,
The plurality of retaining wall type rainwater storage units,
A first retaining wall type rainwater storage unit, and
A second retaining wall type rainwater storage unit in contact with the first retaining wall type rainwater storage unit
Including,
Each of the main body portions of the first retaining wall type rainwater storage unit and the second retaining wall type rainwater storage unit,
A drainage passage separated from the storage tank and formed under the storage tank,
A first convex portion extending in the height direction and a first outer surface adjacent to the first convex portion and formed with a first concave portion that is 180 degrees symmetrical with respect to a shared surface with the first convex portion, and
A second concave portion corresponding to the first convex portion and a second convex portion adjacent to the first convex portion and a second convex portion corresponding to the first convex portion facing a second direction away from the first direction facing the first outer surface The second outer surface formed with the addition
Including,
The first convex portion of the first retaining wall type rainwater storage unit is inserted and coupled to the second concave portion of the second retaining wall type rainwater storage unit, and the second convex portion of the second retaining wall type rainwater storage unit is the first It is inserted and coupled to the first concave portion of the retaining wall type rainwater storage unit,
The ratio of the height of the body portion to the width of the body portion is 2 to 5,
The ratio of the height of the storage tank to the height of the drainage channel is 2.5 to 4,
The bottom surface of the drainage passage is prefabricated retaining wall rainwater storage tank formed by inclining along the arrangement direction of the first retaining wall rainwater storage unit and the second retaining wall rainwater storage unit. In claim 1,
The first convex portion,
A slope protruding in the first direction to form an obtuse angle with the first outer surface, and
A convex surface connected to the slope and substantially parallel to the first outer surface
Including,
The convex surface is a prefabricated retaining wall rainwater storage tank connected while being substantially perpendicular to the shared surface. In paragraph 2,
The first concave portion,
Another slope parallel to the slope and recessed in the second direction to form an obtuse angle with the first outer surface, and
A concave surface connected to the other slope and substantially parallel to the convex surface
Including,
The concave surface is a prefabricated retaining wall type rainwater storage tank connected while forming a substantially right angle with the shared surface. In paragraph 2,
Each of the body portions further includes a first inner surface that forms the storage tank and faces the second direction and corresponds to the first outer surface,
A prefabricated retaining wall type rainwater storage tank further protruding in the second direction on the first inner surface and having a first reinforcing portion corresponding to the first concave portion. In claim 4,
Each of the main body portions further includes a second inner surface that forms the storage tank and faces the first direction and corresponds to the second outer surface,
A prefabricated retaining wall type rainwater storage tank further protruding in the first direction on the second inner surface and having a second reinforcing portion facing the first reinforcing portion. In claim 4,
A prefabricated retaining wall rainwater storage tank having a thickness of the first reinforcing portion protruding from the first inner surface is substantially the same as a thickness of the first concave portion protruding from the first outer surface. In claim 1,
Each of the body parts is installed on a third outer surface connected to the first outer surface and the second outer surface, contacts the lower site forming the region, and passes through the third outer surface to communicate with the drainage passage Further comprising a catchment connected to,
The drainage passage is formed while penetrating the first outer surface and the second outer surface,
A prefabricated retaining wall type rainwater storage tank in which a drainage passage of the first retaining wall rainwater storage unit and a drainage passage of the second retaining wall rainwater storage unit communicate with each other. In clause 7,
The catchment,
A pair of first sidewalls that are spaced apart and opposed to each other,
A second sidewall that interconnects the pair of first sidewalls and contacts the lower site, and
It is surrounded by the pair of first sidewalls and the second sidewall, is in contact with the bottom surface of the drain hole, is positioned lower than the bottom site and is applied to be parallel to the bottom site, and each bottom of the pair of first sidewalls Grating located higher
Prefabricated retaining wall type rainwater storage tank comprising a. In claim 1,
The upper plate part,
A planting plate portion applied so that the trees are planted by forming an upper site forming the region thereon,
Its upper end is located above the planting plate part, is opened upward, communicates with the storage tank, and a water intake part extending long in the width direction, and
A maintenance unit in contact with the water intake unit and open to the upper side to communicate with the storage tank
Prefabricated retaining wall type rainwater storage tank comprising a. In claim 9,
A prefabricated retaining wall type rainwater storage tank in which a plurality of through holes spaced apart from each other are formed in the planting plate part, and a permeable net applied so that only water passing through the upper site falls into the storage tank while supporting the upper site in the through holes.

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