Top-down / bottom-up lid structure box which applies road filtration facilities

Abstract

The present invention relates to a technology for manufacturing an LID concrete half structure box capable of improving a core function by applying general vegetation soil, while excluding the use of multi-functional vegetation soil, to a tree box filter, a planter box, and the like in the field of low-impact development filtration facilities. The technology for manufacturing an LID top-down / bottom-up structure box applies a pre-treatment technology which can treat road rainfall runoff in a top-down / bottom-up manner and can be applied to an LID tree box filter, an LID planter box, and the like, the top-down / bottom-up LID structure box improving the underlying technologies for water drainage, tree planting, and pollution reduction by using general vegetation soil.

Description

Top-down LID structure box with road penetration facility

[0001] The present invention relates to a low-impact development technique for infiltration facilities, a structural box technology capable of storing and evaporating 20 mm or more of rainfall runoff, which is diluted by early rainfall and discharged as environmental pollutants, such as automobile exhaust and tire wear dust generated on roads, and calcium chloride used for winter de-icing.

[0002]

[0003] Low Impact Development (LID) is a technique that aims to restore the natural water cycle system through infiltration, storage, and evapotranspiration of rainfall runoff from road and parking lot surfaces. It is a technology applied to development projects for sustainable development that minimizes the impact of urbanization on aquatic ecosystems, making them as close to their pre-development state as possible, and minimizing the impact of development.

[0004] The characteristics of low-impact development technology include reducing runoff through infiltration and retention at the source of rainfall runoff, improving water quality by preventing pollutants from being diluted by initial rainfall and running off, protecting ecosystems and promoting biodiversity, and improving urban landscapes.

[0005] For this reason, technological advancements are actively underway. Existing LID research has led to the development of low-impact development technologies that utilize vegetation and gravel to treat road runoff, such as wooden filter boxes and plant pots. These technologies allow road runoff to pass through vegetation, infiltrate into the gravel layer, and be stored for evaporation. Furthermore, research is being conducted on multi-functional vegetation as a key material for treating drainage, trees, and pollution.

[0006] Recently, a low-impact development tree filter box (10-2447342) was patented, and a vegetated box with improved performance was developed by applying a half-structured box. This technology, with its open-bottom structure, is effective in preventing facility blockage caused by vegetation root growth. However, it does not offer an alternative solution for vegetation soil and facility blockage.

[0007] The present invention is a LID concrete half-structure box technology that can enhance the inherent functions by applying general vegetation soil instead of multi-functional vegetation soil for low-impact development infiltration facilities such as tree filter boxes and plant cultivation pots. This technology proposes a LID top-down dual-purpose structure box manufacturing technology that applies a pretreatment technology capable of top-down and top-down treatment of road runoff that can be applied to LID tree filter boxes, LID plant cultivation pots, etc.

[0008]

[0009] The technical problem to be solved by the present invention is that environmental pollutants such as automobile exhaust and tire wear dust generated on the road, and calcium chloride for snow removal in winter, are diluted by early rainfall and run off, polluting water quality, which has a negative impact on the ecosystem and human health, and the inflow of pollutants into rivers may cause a rise in water levels, resulting in flooding, and additional costs may be incurred for the treatment of various pollutants that have flowed into rivers. In order to prevent and reduce such phenomena, the present invention provides a low-impact development technique infiltration facility structure box technology capable of storing and infiltrating 20 mm or more of rainfall runoff and evapotranspiration.

[0010] The technical problems to be solved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0011]

[0012] In order to achieve the above technical task, in one embodiment of the present invention, in a bottom-up LID infiltration facility structure box into which road runoff water flows in, the structure box may be provided in the form of a bottom-up LID structure box, characterized in that it includes a pretreatment section for separating road runoff water flowing in through an inlet set inside into environmental pollutants and water, a main section for storing and infiltrating the runoff water passing through the pretreatment section, a structure box closing section for covering the upper end of the structure box; and a drainage boundary section mounted on one upper end of the structure box for diverting the runoff water to the pretreatment section.

[0013] In addition, in a bottom-up LID structure box for a low-impact infiltration facility into which road runoff water flows in, the structure box may be provided in the form of a top-down LID structure box characterized by including a pretreatment section for separating road runoff water flowing in to the inside into environmental pollutants and water; an upward pretreatment section retaining wall for separating the pretreatment section for allowing the runoff water passing through the drainage boundary to drop and store it; a partition groove for fixing the upward pretreatment section retaining wall on both sides of the pretreatment section; and a runoff passage for allowing water passing through the pretreatment section to move to the main body.

[0014] In one embodiment of the present invention, the pretreatment unit may be provided in the form of an upper / lower LID structure box, characterized in that it further includes a first pretreatment room on one side of the pretreatment unit separated by the upper pretreatment unit wall; and a second pretreatment room on the other side.

[0015] In one embodiment of the present invention, the upward pretreatment unit wall may be provided in the form of an upper / lower LID structure box characterized by including a lower upward pretreatment unit wall channel through which rainwater runoff can move.

[0016] In one embodiment of the present invention, the drainage boundary portion may be provided in the form of a top-down LID structure box, characterized in that it includes a groove-shaped runoff inlet formed on one side to allow the rainwater runoff to move into the inside of the structure box.

[0017] In one embodiment of the present invention, the main body can provide a top-down LID structure box shape characterized by including a porous rectangular infiltration pipe for soil infiltration of the rainwater runoff on three or four of the four sides; and an infiltration pipe embedding groove for covering the porous rectangular infiltration pipe to a lower set height.

[0018] In one embodiment of the present invention, the first pretreatment room comprises: a first descending section through which the rainwater flows in through the effluent inlet and then descends into the interior of the first pretreatment room; a first ascending section through which the rainwater flows upward through the lower end of the upward pretreatment unit support wall installed on one side of the first pretreatment room and then ascends to the second pretreatment room; and a second ascending section through which the rainwater flows upward from the second pretreatment room to the main body. The main body includes a second descending section through which water moving from the pretreatment unit descends, thereby inducing falling and friction of the rainwater runoff inside the pretreatment unit, thereby separating the sediment contained in the rainwater runoff from the inner floor surface of the first pretreatment room, and after the sediment is separated through the upper pretreatment unit support wall, the rainwater runoff that has passed through the crushed stone layer of the second pretreatment room is delivered to the main body to allow the rainwater runoff to infiltrate and be stored.

[0019] In a top-down LID infiltration facility structure box in which road runoff water flows inwardly, the structure box may include a pretreatment section that separates road runoff water flowing inwardly into environmental pollutants and water; a main body section that stores and infiltrates the runoff water that has passed through the pretreatment section; a structure box closing section that covers the top of the structure box; and a drainage boundary section that is installed on one top of the structure box to divert the runoff water to the pretreatment section. The structure box may be characterized by including a top-down LID structure box shape.

[0020] In one embodiment of the present invention, the pretreatment unit may be characterized by having a top-down LID structure box shape, characterized by including a pretreatment unit upper plate that separates the pretreatment unit for storing the rainwater runoff that has passed through the drainage boundary by dropping it; a top-down pretreatment unit retaining wall that separates the pretreatment unit and the main body; and an outlet on one side of the bottom through which the rainwater runoff can move at the bottom of the pretreatment unit.

[0021] In one embodiment of the present invention, the top-down pretreatment unit wall may be characterized by a top-down LID structure box shape, characterized by including a bottom-up pretreatment unit wall channel through which the rainwater runoff can move.

[0022] In one embodiment of the present invention, the drainage boundary portion may be characterized by including a top-down LID structure box shape, characterized in that it includes a groove-shaped runoff inlet formed on one side to allow the rainwater runoff to move into the inside of the structure box.

[0023] In one embodiment of the present invention, the main body may be characterized by including a shape of a top-down LID structure box, characterized in that it includes a porous rectangular infiltration pipe for soil infiltration of the rainwater runoff on three or four of the four sides; or a crushed stone layer at the bottom of the main body through which the rainwater runoff moved from the pretreatment section can move; a perforated pipe horizontally buried in the infiltration pipe embedding groove that covers the porous rectangular infiltration pipe to a lower set height.

[0024] In one embodiment of the present invention, the pretreatment unit may include a descending section in which the rainwater flows in through the runoff inlet and then descends into the pretreatment unit; a section in which the rainwater moves to the main body through a downward pretreatment unit buttress channel at the bottom of the downward pretreatment unit buttress installed on one side inside the pretreatment unit; and may include a top-down LID structure box in the form of a feature characterized in that the rainwater runoff is capable of infiltrating and retaining by inducing falling and friction of the rainwater runoff inside the pretreatment unit to separate sediment contained in the rainwater runoff from the inner bottom surface of the pretreatment unit, and delivering the rainwater runoff from which the sediment has been separated through the downward pretreatment unit buttress to the main body.

[0025] In one embodiment of the present invention, the structural box may be characterized by a top-down LID structural box shape including a boundary stone hanger capable of mounting the drainage boundary portion on one outer side; and a structural box buttress forming the frame of the structural box.

[0026]

[0027] According to an embodiment of the present invention, the performance of a unique technology capable of draining, removing trees, and reducing pollution, etc., with a functional vegetation soil exclusion technology can be improved.

[0028] In addition, according to an embodiment of the present invention, the downward LID perforated pipe is horizontally buried in the lower gravel (crushed stone) layer to treat rainwater runoff, and is combined with an infiltration pipe buried in a vertical wall surface to expect efficient discharge of upper and lower combined runoff water.

[0029] The effects of the present invention are not limited to the effects described above, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the composition of the invention described in the claims.

[0030]

[0031] Figure 1 is a three-dimensional drawing showing a configuration according to the present invention.

[0032] Figure 2 is a partial enlarged view and assembly drawing of a penetration pipe of an upward structural box according to the present invention.

[0033] Figure 3 is a drawing and partial enlarged view of the perforated pipe assembly of the top-down structural box according to the present invention.

[0034] Figure 4 is an assembly drawing and a partial enlarged view of a structural box according to the present invention.

[0035] Figure 5 is a flow diagram of rainwater runoff in an upward structure box according to the present invention.

[0036]

[0037] The advantages and features of the present invention and the methods for achieving them will become clear with reference to the embodiments described in detail below together with the attached drawings.

[0038] However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

[0039] Hereinafter, the present invention will be described with reference to drawings for explaining a wooden filter box according to embodiments of the present invention.

[0040] Figure 1 is a three-dimensional drawing showing the configuration according to the present invention. Figure 2 is an assembly drawing and a partial enlarged view of the infiltration pipe of the upward structural box according to the present invention. Figure 3 is an assembly drawing and a partial enlarged view of the perforated pipe of the downward structural box according to the present invention. Figure 4 is an assembly drawing and a partial enlarged view of the structural box according to the present invention. Figure 5 is a flow diagram of rainwater runoff inside the upward structural box according to the present invention.

[0041] One embodiment of the present invention through FIGS. 1 to 6 may include a structure box (100), a main body (110) and a pretreatment section (120) inside the structure box (100), a drainage boundary stone (150), and a structure box finishing section (160) that can cover the upper surface of the structure box (100). Hereinafter, the main body (110) and the pretreatment section (120) according to the present invention will be described with emphasis.

[0042] In one embodiment of the present invention, it may be characterized in that environmental pollutants such as automobile exhaust and tire wear dust generated on the road, and calcium chloride for snow removal in winter, are diluted by initial rainfall and discharged as rainwater runoff, and are efficiently treated through the main body (110) and the pretreatment unit (120), thereby reducing non-point source pollution.

[0043] The present invention can be characterized by providing a technology for manufacturing a top-down, dual-purpose LID infiltration structure box that applies a drainage boundary stone (150) to a structure box (100) to divert rainwater runoff to a pretreatment unit (120) and allow the rainwater runoff to flow in, and the rainwater runoff treated for non-point source pollution flows into the surface of the vegetated soil of the main body (110) and infiltrates the soil, thereby applying a structure box infiltration pipe (111) to a wall groove 100 mm below the upper surface of the main body (110) to efficiently infiltrate, store, and evaporate the rainwater.

[0044] In one embodiment of the present invention, the structure box (100) can be installed on roadsides, parking lots, parks, etc. where a lot of rainwater collects, can be installed on roadsides, industrial complexes, farmlands, etc. where a lot of non-point source pollutants are generated, and can be characterized by being installed in urban areas and dry areas where water circulation is not smooth.

[0045] In one embodiment of the present invention, the drainage boundary stone (150) may be installed at a height higher than or equal to the location where rainwater collects, so as to be capable of filtering out environmental pollutants in advance from passing through the effluent inlet (151).

[0046] In one embodiment of the present invention, the pretreatment unit (120) of the structural box (100) may be characterized by being in the form of a structural box with a closed bottom and an independent form filled with gravel (crushed stone), etc.

[0047] In one embodiment of the present invention, the main body (110) of the structural box (100) may be characterized by being in the form of an independent structural box filled with gravel (crushed stone), etc.

[0048] In one embodiment of the present invention, the preprocessing unit (120) may be characterized as a multifunctional preprocessing technology that is based on bottom-up, but can optionally be converted to a top-down preprocessing room.

[0049] In one embodiment of the present invention, a top plate is installed so as to be aligned with the horizontal water level of about 2 to 3% of one side of the pretreatment unit (120), thereby forming a top-down pretreatment chamber. This can be characterized by providing a top-down combined pretreatment chamber technology.

[0050] In one embodiment of the present invention, it may be characterized by inserting an upward pretreatment unit support wall (1213-1) into a partition groove (1211) located on both sides of the interior of a pretreatment unit (120) of an upward structure box (100) to divide it into a first pretreatment room (121) and a second pretreatment room (122).

[0051] In one embodiment of the present invention, the pretreatment unit (120) of the structural box (100) is suitable for initial rainfall treatment, but when the capacity is exceeded, it can be transported from the crushed stone layer surface to the main treatment room. The installation of the upward pretreatment unit retaining wall (1213-1) can be characterized by a pretreatment technology that can transport the rainfall runoff by passing through the crushed stone layer of the pretreatment unit (120) from left to right and bypassing it to the main body (110).

[0052] Rainwater runoff that has passed through the crushed stone layer of the pretreatment unit (120) according to one embodiment of the present invention may be characterized in that it can be primarily separated from sediment and oil residue (such as oil residue).

[0053] According to one embodiment of the present invention, the first pretreatment room (121) and the second pretreatment room (122) may be characterized as referring to a space where non-point source pollutants introduced through rainwater runoff are filtered before moving from the pretreatment unit (120) to the main body unit (110).

[0054] In one embodiment of the present invention, the bottom-up or top-down method of the preprocessing unit (120) of the structural box (100) may be selectively processed.

[0055] In one embodiment of the present invention, the top-down pretreatment unit wall (1213-2) separating the pretreatment unit (120) and the main body (110) and the horizontal pretreatment unit upper plate (1212) on the front inner side of the pretreatment unit (120) can be used to horizontally divide the upper and lower parts. At this time, the pretreatment unit upper plate (1212) preferably has an incline of about 2% with respect to the water outflow inlet (151), and an outflow port (123) must be applied to the lower part of the pretreatment unit (120). This technology can be characterized as a structure box (100) technology suitable for application of LID plant cultivation pots as a top-down pretreatment technology.

[0056] In one embodiment of the present invention, the road runoff may be characterized by an upward pretreatment technology in which the left side of the upward pretreatment unit wall (1213-1) installed vertically in the pretreatment unit (120) penetrates downward through the gravel layer, and the right side of the upward pretreatment unit wall (1213-1) penetrates upward through the gravel layer according to the water level, thereby reducing and removing non-point source pollution and diverting it to the main body (110).

[0057] In one embodiment of the present invention, the bottom-up pretreatment unit retaining wall (1213-1) and the top-down pretreatment unit retaining wall (1213-2) may be provided with a bottom-type bottom-up pretreatment unit retaining wall channel (1214-1) and a bottom-up pretreatment unit retaining wall channel (1214-2), and the top of the bottom-up pretreatment unit retaining wall (1213-1) may be installed at least 100 mm higher than the average inflow / outflow water level to prevent overflow of runoff water. In addition, an overflow pipe may be installed when the capacity is exceeded due to extreme rainfall, and the excess overflow pipe must be discharged into a rainwater drain.

[0058] In one embodiment of the present invention, the structure box infiltration pipe (111) is a technology for burying a porous rectangular structure box infiltration pipe (111) by applying a groove of a shape with a depth of half the wall thickness from 100 mm below the upper wall surface of the main body (110). In addition, it may include a feature that can infiltrate and store 20 mm or more of accumulated rainfall runoff in parallel with the soil infiltration of rainfall runoff.

[0059] In one embodiment of the present invention, the size of the structure box infiltration tube (111) is related to the water infiltration rate. In addition, the larger the size of the structure box infiltration tube (111), the faster the water infiltration rate, and the more effectively water contamination can be prevented.

[0060] In addition, in one embodiment of the present invention, the structure box penetration pipe (111) may be characterized by being applicable to both upward and downward methods by a technology of vertically embedding the structure box penetration pipe (111) in the structure box wall (140) for penetration ability.

[0061] In addition, in one embodiment of the present invention, the structural box infiltration pipe (111) may be characterized in that it prevents the deterioration of its inherent function due to blockage caused by a decrease in the infiltration capacity of the vegetated soil, and that improvement of the vegetated soil is not necessary to maintain the permeability of the vegetated soil.

[0062] In one embodiment of the present invention, it may be characterized by a technology capable of efficiently treating upper and lower combined effluent by combining with a structural box infiltration pipe (111) embedded in a vertical wall surface of a main body (110).

[0063] In one embodiment of the present invention, when a structural box penetration tube (111) is embedded in the main body (110),

[0064] For example, it may be characterized by the application of 3 to 4 structural box penetration pipes on one side with a spacing of 100 mm from the top.

[0065] In one embodiment of the present invention, the application may apply the structural box penetration tube (111) to three or four sides.

[0066] In one embodiment of the present invention, the lower part of the structural box penetration tube (111) is buried,

[0067] For example, it may be characterized by including that the gravel layer below the non-woven fabric layer of the vegetation soil should be covered by at least 50 mm.

[0068] In one embodiment of the present invention, a perforated pipe (113) may be installed when the capacity is exceeded due to extreme rainfall, and the excess water perforated pipe (113) may be discharged into a rainwater drain.

[0069] In one embodiment of the present invention, the structure box infiltration pipe (111) and the perforated pipe (113) of the main body (110) have in common that they are a technology for infiltrating and retaining rainwater runoff by embedding in a crushed stone layer and transferring the runoff water that has passed through the crushed stone layer of the pretreatment unit (120) to the crushed stone layer of the main body (110). However, the structure box infiltration pipe (111) may be vertically embedded in the structure box support wall (140), whereas the perforated pipe (113) may be horizontally embedded in a crushed stone layer accumulated on the bottom of the main body (110).

[0070] In one embodiment of the present invention, the structural box boundary stone hanger (130) may be characterized by preventing detachment of the member, replacing the construction joint as an additional component, eliminating the need for installation of an index plate, and preventing freezing in winter due to water leakage.

[0071] In one embodiment of the present invention, the structural box retaining wall (140) is applied as a 100 mm concrete wall. When such a structural box retaining wall (140) is applied as a 2 mm stainless steel plate retaining wall that is easy to attach and detach, the pretreatment area increases by 80% compared to a concrete retaining wall, and the multi-functional pretreatment unit (120) can be easily applied, thereby improving the efficiency of road runoff treatment.

[0072] In one embodiment of the present invention, the structural box finishing part (160) may include features such as improved constructability and economy by providing a concrete upper surface texture and appearance, an effect of replacing a tree protection plate frame, and easy facility leveling using horizontal mortar.

[0073] In one embodiment of the present invention, the water flow of the upward structure box is such that when the rainwater runoff that flows in bypassing the upward pretreatment section retaining wall (1213-1) through the effluent inlet (151) of the drainage boundary stone (150) passes through the first descending section (A) and reaches the crushed stone layer, the turbidity is reduced, most of the floating matter in the crushed stone layer can be removed, and some organic matter may remain.

[0074] In one embodiment of the present invention, the rainwater that has passed through the first descending section (A) may be characterized in that it passes through the upward pretreatment section retaining wall channel (1214-1) formed at the lower end of the upward pretreatment section retaining wall (1213-1) of the first pretreatment room (121) and reaches the first ascending section (B) that rises above the crushed stone layer of the second pretreatment room (122).

[0075] In one embodiment of the present invention, the rainwater that has passed through the first pretreatment room (121) can be primarily separated from water-soluble sediment and oil residue (such as oil residue) by utilizing the principle of rising due to the difference in specific gravity with water and buoyancy, and the rainwater that has reached the first rising section (B) can be characterized in that secondary separation of the water-soluble sediment and oil residue (such as oil residue) occurs in the process of rising through the gap at the bottom of the crushed stone layer.

[0076] In one embodiment of the present invention, the rainfall runoff that has passed through the first rising section (B) may be collected in the second pretreatment room (122), and then passes through the second rising section (not shown) and the runoff water passage (1221) to reach the second falling section (C).

[0077] In one embodiment of the present invention, the water flow of the top-down structural box may be characterized in that the top-down pretreatment unit retaining wall (1213-2) passes through a descending section where the rainwater runoff that has been diverted through the drainage boundary stone (150) inflow inlet (151) descends into the interior of the pretreatment unit (120), passes through the crushed stone layer of the pretreatment unit (120) filled with gravel (crushed stone), etc., and then is discharged out of the structural box (100) through the outlet (123) after non-point source pollution is removed, or passes through the top-down pretreatment unit retaining wall channel (1214-2) located at the bottom of the top-down pretreatment unit retaining wall (1213-2) and moves to the main body, and evapotranspiration through soil infiltration occurs through the perforated pipe (113) or the infiltration pipe embedded groove (112).

[0078] In one embodiment of the present invention, LID vegetated soil is being studied as a technology element for drainage, tree protection, pollution reduction, etc. On the other hand, the application of this technology may include a top-down dual-purpose LID infiltration facility structure box technology that enhances the performance of a unique technology that can perform drainage, tree protection, pollution reduction, etc. as a general vegetated soil with a functional vegetated soil exclusion technology.

[0079]

[0080] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will readily appreciate that the present invention can be readily modified into other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single entity may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined manner.

[0081] The scope of the present invention is indicated by the claims described below, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

[0082]

[0083] The mode for carrying out the invention has been described together with the best mode for carrying out the invention above.

[0084] The present invention relates to a low-impact development technique for infiltration facilities, a structural box technology capable of storing and evaporating 20 mm or more of rainfall runoff, which is diluted by early rainfall and discharged as environmental pollutants such as automobile exhaust and tire wear dust generated on roads, and calcium chloride used for winter de-icing. This technology has industrial applicability.

Claims

1. In the case of a top-down structure box of a low-impact open-air infiltration facility where road runoff water flows inward, The above structural box is, A pretreatment unit that separates road runoff water flowing into an inlet set internally into environmental pollutants and water; A main body for storing and infiltrating the rainwater that has passed through the above pretreatment unit; A structural box closure covering the top of the above structural box; and A top-down LID structure box characterized by including a drainage boundary section installed on the upper side of one side of the structure box to divert the rainwater runoff to a pretreatment section.

2. In paragraph 1, The above preprocessing unit, An upward pretreatment unit retaining wall separating the pretreatment unit for storing rainwater that has passed through the above drainage boundary by dropping it; A partition groove capable of fixing the upper pretreatment unit support wall to both sides of the above pretreatment unit; and A top-down LID structure box characterized by including an effluent passage through which water passing through the above pretreatment section can move to the above main body section.

3. In paragraph 2, The above preprocessing unit, A first pretreatment room on one side of the pretreatment unit separated by the above-mentioned upward pretreatment unit wall; Second pre-treatment room on the other side; A top-down LID structure box characterized by further including:

4. In paragraph 3, The above upward preprocessing unit wall is, Bottom-mounted, upward-facing pretreatment culvert through which rainwater runoff can move; A top-down LID structure box characterized by including:

5. In paragraph 3, The above drainage boundary is, A groove-shaped runoff inlet formed on one side to allow the above-mentioned rainwater runoff to move into the inside of the above-mentioned structural box; A top-down LID structure box characterized by including:

6. In paragraph 1, The above main body part, Porous rectangular infiltration pipes for soil infiltration of said rainwater runoff on three or four of the four sides; A permeation pipe embedding groove covering the above porous rectangular permeation pipe to a lower set height; A top-down LID structure box characterized by including:

7. In paragraph 5, The above first pretreatment room is, A first descending section through which the above-mentioned rainwater flows into the first pretreatment room after flowing in through the above-mentioned runoff inlet; A first rising section that moves upward to the second pretreatment room through the lower part of the upper pretreatment unit support wall installed on one side of the first pretreatment room; and Including a second ascending section that ascends and moves from the second pretreatment room to the main body; The above main body part includes a second descending section in which water moving from the above pretreatment section descends. A top-down LID structure box characterized in that it induces falling and friction of the rainwater runoff inside the above pretreatment unit to separate the sediment contained in the rainwater runoff from the inner floor surface of the first pretreatment room, and after the sediment is separated through the upper pretreatment unit support wall, the rainwater runoff that has passed through the crushed stone layer of the second pretreatment room is delivered to the main body to allow the rainwater runoff to infiltrate and be stored.

8. In the case of a top-down structure box of a low-impact infiltration facility where road runoff water flows inward, The above structural box is, A pretreatment unit that separates road runoff water flowing into the interior into environmental pollutants and water; A main body for storing and infiltrating the rainwater that has passed through the above pretreatment unit; A structural box closure covering the top of the above structural box; and A drainage boundary section installed at the upper side of the above structural box to divert the above rainwater runoff to the pretreatment section; A top-down LID structure box characterized by including:

9. In paragraph 8, The above preprocessing unit, A pretreatment unit top plate separating the pretreatment unit for storing the rainwater that has passed through the drainage boundary by dropping it; A top-down preprocessing unit wall separating the preprocessing unit and the main body; and A top-down LID structure box characterized by including an outlet on one side of the bottom through which rainwater runoff can move at the bottom of the above pretreatment section.

10. In paragraph 9, The above top-down preprocessing unit wall is, A downward pretreatment section retaining wall channel through which the above rainwater runoff can move; A top-down LID structure box characterized by including:

11. In paragraph 10, The above drainage boundary is, A groove-shaped runoff inlet formed on one side to allow the above-mentioned rainwater runoff to move into the inside of the above-mentioned structural box; A top-down LID structure box characterized by including:

12. In paragraph 11, The above main body part, Porous rectangular infiltration pipes for soil infiltration of said rainwater runoff on three or four of the four sides; Or a perforated pipe horizontally buried in the crushed stone layer at the bottom of the main body through which the rainwater moved from the pretreatment unit can be moved; and A top-down LID structure box characterized by including a penetration pipe embedding groove that covers the porous rectangular penetration pipe to a lower set height.

13. In paragraph 12, The above preprocessing unit, A descending section in which rainwater flows into the pretreatment unit after flowing in through the above-mentioned runoff inlet; A section moving to the main body through the downward pretreatment unit support wall channel at the bottom of the downward pretreatment unit support wall installed on one side inside the above pretreatment unit; Including, A top-down LID structure box characterized in that it induces falling and friction of rainwater runoff inside the above pretreatment unit to separate sediment contained in the rainwater runoff from the inner bottom surface of the above pretreatment unit, and transmits the rainwater runoff from which the sediment has been separated through the top-down pretreatment unit support wall to the above main body to allow the rainwater runoff to infiltrate and be stored.

14. In any one of the clauses 1 to 13 The above structural box is, A boundary stone hanger capable of mounting the drainage boundary section on one side of the exterior; and A structural box buttress forming the frame of the above structural box; A top-down LID structure box including:

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