WO2011083915A2

WO2011083915A2 - Water pocket using a percolation well for the in-ground storage of percolated rainwater

Info

Publication number: WO2011083915A2
Application number: PCT/KR2010/008614
Authority: WO
Inventors: 임철웅
Original assignee: Lim Chol Woong
Priority date: 2010-01-07
Filing date: 2010-12-03
Publication date: 2011-07-14
Also published as: CN102134877A; WO2011083915A3; KR100952192B1

Abstract

The present invention relates to a water pocket capable of preventing the reverse flow of rainwater from a drain by reducing the rate of water outflow, by percolating a portion of the rainwater, which concentrates at a sump of the drain during flooding when the water level suddenly swells, deep underground through the water pocket. In order to achieve the above aim, a water pocket for preventing the reverse flow of rainwater from a drain according to the present invention comprises: a rainwater inlet tank connected to a side of a drain sump via a connecting pipe, into which rainwater collected at the sump is admitted through the connecting pipe; a percolation well formed in-ground below the floor of the rainwater inlet tank; a first perforated pipe having a cylindrical shape and a plurality of through-holes defined in the periphery thereof, and which is inserted within the percolation well to define a space between the walls of the percolation well; a second perforated pipe having a cylindrical shape and a plurality of through-holes defined in the periphery thereof, which is inserted within the first perforated pipe and has a non-woven fabric coupled tightly to an outer portion thereof to filter impurities; a filter layer filled with aggregate in a space between the percolation well and the first perforated pipe; and a filter mesh fastened so as to block the top of the first perforated pipe, wherein rainwater is discharged through only the outlet of the sump during normal flow conditions, and during abnormal flow conditions, rainwater that flows into the rainwater inlet tank through the connecting pipe is percolated and stored in the ground through the first and second perforated pipes and the filter layer.

Description

Water pocket using penetration well to infiltrate and store rainwater in the ground

The present invention relates to a water pocket using an infiltration well that penetrates and stores rainwater in the ground. More particularly, when a rainwater that suddenly blows up during a flood is concentrated in a sewage well of a sewer, a part of the rainwater is grounded through the water pocket. The present invention relates to a water pocket using an infiltration well that penetrates and stores rainwater in the ground by reducing the outflow rate of rainwater and preventing flooding of the river.

Recently, due to guerrilla heavy rains, heavy rains and typhoons in the rainy season, unexpected large flood damages often occur in cities, especially lowlands. The main reason for floods or flooding in the lowlands of the city is because of the lack of water or sewerage, and rainwater suddenly overflows the road drainage and floods the lowlands and streams.

In recent years, due to the development of industrialization, almost all roads in the city are paved with asphalt, concrete, etc., and turned into impervious surfaces, where rainwater is not absorbed into the ground but flows into the sewer. In this system, during heavy rains such as the rainy season, large amounts of rainwater intensively flow into the sewage wells at once, but the catchment capacity of the water wells is limited, so the rainwater overflows again outside the sewage wells at the moment. As a result, flooding often occurs during flooding.

Conventional technologies related to road drainage facilities for preventing flooding of rivers by storm water are disclosed in Japanese Patent Laid-Open Nos. 2007-231734, 2009-97151, and 10-0621364.

The technique is a structure in which a submerged pipe having a plurality of through holes formed in the outer wall from the inner bottom surface of the sump of the sewer to the ground deep.

The overflow prevention structure of the river due to the above rainwater flows along the outlet, but the sewage or rainwater flowing into the sump through the manhole or the inlet under normal conditions, but when a large amount of rainwater suddenly intensively flows due to the flood It penetrates into the soil of the ground along the submerged pipe, thereby delaying or preventing the flooding of the river due to the intensive inflow of rainwater.

In general, it is a structure in which the inundation pipe is directly inserted into the bottom surface of the sewage well of the sewage system, and various wastes and foreign substances on the ground flow along with the rainwater inside the sewage well, and in this case, the rainwater is the drainage pipe. Although it can penetrate into the soil of the ground through the foreign matter, it is accumulated in the inside of the submerged pipe or prevents the penetration of the submerged pipe, although small foreign materials can pass through the through hole, but do not penetrate into the soil, In the filtration layer.

Thus, when the foreign matters accumulate for a long time, rainwater can no longer be submerged into the soil of the ground through the submerged pipe, and the submerged pipe does not perform its function. In order to prevent such a problem, Japanese Laid-Open Patent Publication No. 2007-231734 discloses a configuration in which a filtering network is provided to prevent the inflow of foreign substances on the top of the submerged pipe. However, the filtering network alone does not prevent passage of fine foreign substances. When the fine foreign matter passing through the accumulation of the filtration layer around the immersion tube through the hole and the immersion tube can not be removed there is a problem that can not be used for a long time.

The present invention has been proposed to solve the above-mentioned problems, and by infiltrating and storing rainwater in the ground during flooding, it is possible to reduce the flow rate of floods flowing into the river or to prevent rain from delayed floods. An object of the present invention is to provide a water pocket using an infiltration well that is infiltrated and stored underground.

In addition, an object of the present invention is to block the foreign matter flowing into the submerged pipe with rainwater, while at the same time efficiently remove the foreign matter accumulated in the submerged pipe and the filter layer to be managed continuously.

The present invention for achieving the above object is connected to the connection pipe from one side of the sump of the sewage in order to reduce or delay the flow rate of the flood flowing into the river during the flooding storm water collector Rainwater inlet tank flowing through; A penetration well formed in the ground below the bottom surface of the rainwater inlet; A first cylindrical tube having a cylindrical shape penetrating into the penetrating well so as to form a space between the sidewalls of the penetrating well, and having a plurality of through holes formed at its periphery; A second cylindrical hole having a cylindrical shape which is inserted into the first oil hole, and has a nonwoven fabric for filtering foreign matters on the outside thereof, and has a plurality of through holes formed at its periphery; A filtration layer filled with aggregate in a space between the penetrating well and the first perforated tube; And a filter net fastened to block an upper end of the first oil pipe, wherein the rainwater is discharged through the outlet of the sump well at a normal flow rate, and the rainwater introduced into the rainwater inflow tank through the connecting pipe at an abnormal flow rate is formed in the first flow pipe. It is characterized in that it is configured to penetrate into the ground through the first and second oil pipes and the filter layer.

In the above-described configuration, a plurality of tubules in which a plurality of through-holes are formed at the periphery of the washing pipe is connected to the upper end integrally by a ring-shaped flange provided with a washing water supply port; between the penetration pipe and the first hole It is further intruded in, forcibly injecting the washing water into the supply port, it characterized in that the fine foreign matter accumulated in the filter layer is configured to flow back into the rainwater inlet tank with the washing water.

In the above configuration, the connector is characterized in that the lower portion is formed so that the bottom 1/3 of the difference between the normal water level of the sump and the maximum water level during the flood.

In the above-described configuration, the filter net is characterized in that the upper end is folded to be detachable from the upper end of the first oil pipe by a fixing band to the outside of the first oil pipe.

The water pocket of the present invention according to the configuration as described above, even if a large amount of rainwater flows into the sewer at a time by reducing or delaying the flow rate of rainwater during the flood, rainwater does not overflow into the river, and the disaster caused by flooding efficiently Can be prevented.

In addition, it is possible to remove foreign matters accumulated in the perforated pipes and the filter layer at the same time, while blocking foreign matters flowing into the perforated pipes with rainwater, it is easy to manage continuously and prepare for heavy rain in advance.

1 is a longitudinal sectional view showing a water pocket according to an embodiment of the present invention;

Figure 2 is an enlarged cross-sectional view showing the detailed structure of the connector according to an embodiment of the present invention,

3 is a cross-sectional view taken along line A-A of FIG.

4 is an enlarged cross-sectional view showing a detailed structure of a penetration well according to an embodiment of the present invention;

5 is a longitudinal sectional view showing a water pocket according to another embodiment of the present invention;

6 is a cross-sectional view taken along line B-B of FIG. 6;

7 is an enlarged cross-sectional view showing a detailed structure of a penetration well according to another embodiment of the present invention;

8 is a perspective view showing a detailed structure of the appearance according to another embodiment of the present invention,

◎ Description of the sign ◎

1: water purification

10: storm inflow tank

20: penetration penetrating

30: 1st memorial hall

40: 2nd memorial hall

42 nonwoven fabric

50: filtration layer

51: aggregate

60: filter network

61: fixed band

70: washing tube

71: customs

The technical problem achieved by the present invention and the practice of the present invention will be apparent from the preferred embodiments described below. The following examples are merely illustrated to illustrate the present invention and are not intended to limit the scope of the present invention. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a longitudinal sectional view showing a water pocket according to an embodiment of the present invention, Figure 2 is an enlarged cross-sectional view showing a detailed structure of the connector according to an embodiment of the present invention, Figure 3 is a cross-sectional view AA of Figure 1, Figure 4 is an enlarged cross-sectional view showing the detailed structure of the penetration well according to an embodiment of the present invention.

Water pocket using the infiltration well to penetrate and store the rainwater in the ground according to an embodiment of the present invention is a rainwater inflow tank 10 is formed on one side of the sump (1) of the sewer, bottom surface of the rainwater inflow tank (10) In the penetrating well 20 is formed to penetrate and store rainwater in the ground. The first oil pipe 30 is fixedly penetrated into the penetration pipe 20, the second oil pipe 40 is inserted into the first oil pipe 30, and the filter network 60 is coupled to the upper portion of the first oil pipe 30. To achieve. In addition, a filter layer 50 filled with aggregate is formed between the sidewall of the penetration well 20 and the first perforated pipe 30, and the sump well 1 and the rainwater inlet tank 10 are connected to the pipe 11. Connected to form an excellent movement passage.

Due to the above structure, when a large amount of rainwater intensively flows into the sump (1) of the roadside sewage due to the heavy rain, and some of the rainwater is not smoothly discharged, some of the rainwater flows along the connecting pipe (11). Moving to 10), the rainwater flowing into the rainwater inflow tank 10 is stored infiltrate into the ground through the lower penetration well 20, thereby reducing or delaying the outflow rate of the abnormal flow rate (flood).

Looking at this in more detail with reference to the drawings, the rainwater inflow tank 10 described above is connected to the sump (1) and the connection pipe (11) of the sewer constituting the road drainage system is collected in the sump (1) It is constructed so that rainwater can flow in. The rainwater inflow tank 10 is constructed in a shape and size similar to that of the water collecting well 1 in consideration of the soil quality of the ground at a position several meters away from the water collecting well 1.

In this case, the connecting pipe 11 is formed at a predetermined height to be discharged through a discharge port (not shown) formed in the water collecting well 1 itself when normal rainwater flows into the water collecting well 1. That is, as shown in FIG. 2, the connecting pipe 11 has a difference h between the height of the average quantity in the normal state inside the sump 1 and the maximum quantity height in the abnormal state in which rainwater flows intensively. On the other hand, it is preferable that the lower end of the connecting pipe 11 is located at a third point (a) of the average quantity and the maximum quantity. In addition, it can be formed in various diameters according to the usual quantity, for example, it is composed of a polyethylene pipe for water (PE) of about 200mm diameter. Unexplained reference numeral 12 denotes a lid of the storm inflow tank 10.

Due to the structure as described above, the sewage or rainwater collected from the inlet port (not shown) of the sump (1) or the through hole (3) of the manhole cover (2) is normally discharged through the discharge port (not shown), heavy rain When the rainwater is excessively collected, a part of the rainwater is discharged to the rainwater inflow tank 10 through the connecting pipe 11 to reduce or delay the rainwater flow rate. In addition, in general, most foreign matter flows into the sump well 1 at the beginning of the heavy rain, and the connection pipe 11 has a height (a) of 1/3 of the difference between the average quantity of rainwater and the maximum quantity (h). When installed, foreign matter flowing initially is not introduced into the rainwater inlet tank 10 through the connecting pipe 11, it is discharged through the discharge port (not shown) of the sump. Therefore, when the connection pipe 11 is installed at the same height, it can perform an initial filtration function for foreign matters.

The above-described infiltration pipe 20 is configured to penetrate and store the rainwater flowing into the rainwater inflow tank 10 from the sump 1 into the ground, and the basement predetermined at the bottom bottom center of the rainwater inflow tank 10. Is formed to a depth of. In consideration of the soil state of the underground, such as permeability, and drilled in various depths and diameters, for example, the penetration well 20 is drilled to a depth of about 15 to 21 m with a diameter of about 500mm.

The first perforated pipe 30 described above allows the rainwater flowing into the penetration well 20 to be evenly penetrated with respect to a predetermined depth of the penetration well 20, so that the filtration layer 50 described below can be stably formed. In the configuration, a pleated tube made of polyethylene (PE) made of a plurality of through holes 31 is inserted into the permeation well 20. The diameter of the first perforated tube 30 should be formed to be sufficiently smaller than the diameter of the penetrating well 20 to form the filtration layer 50, for example composed of a water polyethylene pipe of about 300mm in diameter. In addition, the first oil hole 30 is constructed to be fixed to the bottom surface of the rainwater inlet tank 10 by the mortar (13).

By the above configuration, the aggregate 51 for forming the filtration layer 50 may be filled between the side wall of the penetration well 20 and the first oil hole 30, and may be introduced into the penetration well 20. Rainwater is not concentrated only at the lower end, but may be introduced into the filtration layer 50 through the through hole 31 of the first oil hole 30 over the entire depth of the penetration well 20.

The second oil pipe 40 is configured to filter out fine foreign matters contained in the rainwater and to prevent the penetration of the rainwater from being blocked by the through hole 41 and the filtration layer 50 of the first oil hole 30. As such, it is inserted into the first oil hole 30 to be detachably installed. The second oil pipe 40 has a cylindrical shape in which a plurality of through-holes 41 are formed in the circumference thereof, and a nonwoven fabric 42 for filtering foreign matters is tightly coupled to the outside. Here, the second oil pipe 40 is to be formed with a smaller diameter than the first oil pipe 30, for example, consisting of a polyethylene pipe of about 250mm diameter, the non-woven fabric 42 is in close contact with the outside It is introduced into the first oil pipe (30).

The foreign matter included in the rainwater by the configuration as described above is caught by the nonwoven fabric 42 of the second oil hole pipe 40 is clogging the through-hole 31 and the filtration layer 50 of the first oil hole pipe 30 due to fine foreign matter. It can prevent. In addition, since the second oil pipe 40 can be separated from the first oil pipe 30, it is often checked or checked before the rainy season starts to remove foreign substances in the second oil pipe 40 or the nonwoven fabric 42. It can be managed to enable the smooth penetration of rainwater by replacing. In addition, when the second oil pipe 40 is separated, the clogging state of the filtration layer 50 may be confirmed, and back washing of the filtration layer 50 may be performed.

The filtration layer 50 is configured to filter out fine foreign matter contained in rainwater in the space between the sidewall of the penetrating well 20 and the first perforated pipe 30 to smoothly penetrate and store rainwater in the ground. The space is filled with aggregate 51 such as gravel or sand. The aggregate 51 may be a gravel or sand of various sizes depending on the soil, for example, aggregates having a diameter of 5 mm or less while being larger than at least the diameter of the through-hole 31 of the first perforated pipe 30.

By the above configuration, the fine foreign matter contained in the rainwater discharged through the through-hole 31 of the first oil hole 30 is filtered again in the filtration layer 50, and the rainwater removed to the most fine foreign matters smoothly into the ground. Penetration can be stored.

The filter network 60 is configured to filter out foreign matter contained in rainwater flowing into the first oil hole 30 first, and is fastened to the upper end of the first oil hole 30, and particularly included in the rainwater introduced. Eliminate relatively bulky foreign objects. The filter net 60 may be composed of a high strength nonwoven fabric having a single structure, or a double structure in which an endothelial using a polyfloppyene nonwoven fabric is attached to the inside of the outer cover using a polyethylene woven fabric. In addition, the filter net 60 is formed such that the diameter of the lower end is smaller than the diameter of the upper end so that it is difficult to remove the foreign matter when the lower foreign body is filled when the heavy foreign matter is filled. In addition, the upper end of the filter net 60 is folded to the outside is fastened to be detachable to the first oil pipe 30 by a fixing band 61 along the outer circumferential surface of the first oil pipe 30. At this time, the fixing band 61 should be made of a material that does not corrode.

The foreign matter contained in the rainwater is filtered and introduced into the first and

second oil pipes

30 and 40 by the configuration as described above, and the filter net 60 can be separated from the first oil pipe 30 so that the foreign matter can be checked from time to time. In particular, before the rainy season starts, the state of the filtering net 60 may be checked in advance and exchanged, or foreign substances may be removed to prepare for the heavy rain in advance.

The water pocket of the configuration as described above according to an embodiment of the present invention is discharged only through the outlet of the sump (1) at the normal flow rate, rainwater flows through the connecting pipe 11 at the abnormal flow rate It flows into the tank 10 and passes through the filtration net 60, the second oil pipe 40, the first oil pipe 30 and the filtration layer 50 of the infiltration well 20 in order to completely remove the foreign matter This is infiltrated and stored to reduce or delay the outflow rate of the abnormal flow rate.

In addition, by checking the state of the filter net 60 and the second oil pipe 40 from time to time to remove foreign substances or replace the non-woven fabric, it can be continuously managed so that the infiltration function can be performed smoothly.

5 is a longitudinal sectional view showing a water pocket according to another embodiment of the present invention, Figure 6 is a cross-sectional view BB of Figure 6, Figure 7 is an enlarged cross-sectional view showing a detailed structure of the penetration well according to another embodiment of the present invention 8 is a perspective view showing a detailed structure of the appearance according to another embodiment of the present invention.

5 to 8, the water pocket according to the embodiment of FIGS. 1 to 4 is characterized in that the filtration layer 50 is further provided with a washing tube 70 for cleaning. . In the following water pocket according to another embodiment of the present invention, a detailed description of the same configuration as the embodiment of FIGS. 1 to 4 will be omitted, and a detailed configuration of the cleaning tube 70 will be described in detail.

Referring to the drawings, in the water pocket according to another embodiment of the present invention, the washing tube 70 is introduced into the space between the filtration layer 50, that is, the side wall of the penetration well 20 and the first oil hole 30.

The above-described washing tube 70 is configured to remove the fine foreign matter accumulated in the filtration layer 50, as shown in FIG. The upper end is integrally connected by the ring-shaped flange 73 provided with 74. The washing tube 70 is inserted and fixed so that the tubular tube 71 reaches deep inside the filtration layer 50, and the upper flange 73 is integrally connected so that the washing water is supplied to the tubules 71. . The flange 73 may be coupled to a plurality of tubules 71 according to the diameter of the filtration layer 50, for example, four tubules 71 may be connected.

The foreign matter can be sufficiently filtered by the filter net 60 and the second oil hole 40, but since the remaining fine foreign matter is finally filtered by the filtration layer 50, the penetration effect of rain may be gradually reduced by such fine foreign matter. Can be. To this end, the cleaning tube 70 having the above configuration is introduced into the filtration layer 50 to remove fine foreign matter from the filtration layer 50.

That is, in the case of forcibly injecting the washing water through the washing water supply port 74, the washing water is introduced into the filtration layer 50 through the tubules 71, and again together with the fine foreign substances of the filtration layer 50. ) Flows into the inside, and finally flows back into the rainwater inflow tank 10. By backwashing the fine foreign matter accumulated in the filtration layer 50 through this process, the worker pocket can be continuously managed and used for a long time.

Although the embodiments of the present invention have been described with reference to the present invention, those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom.

Claims

A rainwater inflow tank 10 which is connected to the connection pipe 11 at one side of the water collecting well 1 of the sewerage and the rainwater collected into the water collecting well 1 is introduced through the connection pipe 11;

An infiltration well 20 formed in the ground below the bottom surface of the rainwater inflow tank 10;

A first cylindrical tube 30 having a cylindrical shape in which a penetration hole 20 is introduced to form a space between the sidewalls of the penetrating well 20, and a plurality of through holes 31 are formed at a periphery thereof;

The second oil pipe 40 is introduced into the first oil pipe 30, the non-woven fabric 42 for tightly filtering the foreign matter is coupled to the outside, and a plurality of through holes 41 are formed at the circumference thereof. ;

A filtration layer 50 filled with aggregate 51 in the space between the penetrating well 20 and the first perforated pipe 30; And

Including; filter net 60 is fastened so as to block the top of the first oil pipe (30),

In the case of the normal flow rate is discharged only through the discharge port of the sump (1), the rainwater flowing into the rainwater inlet tank 10 through the connecting pipe 11 during the abnormal flow rate during the heavy rain is the first and second oil pipes (30, 40) and the water pocket using the penetration well for penetrating and storing the rainwater in the ground, characterized in that configured to penetrate into the ground through the filter layer (50).
The method of claim 1,

A plurality of tubules 71 having a plurality of through-holes 72 formed at the circumference thereof, the washing tube 70 having an upper end integrally connected by a ring-shaped flange 73 provided with a washing water supply hole 74; More penetrated between the penetration well 20 and the first perforated pipe 30,

By injecting the wash water to the supply port 74 by force, the fine foreign matter accumulated in the filtration layer 50 with the wash water to flow back into the rainwater inlet tank 10 characterized in that Water pockets with penetration wells to penetrate and store in.
The method according to claim 1 or 2,

The connecting pipe 11 is formed using the infiltration well for penetrating and storing the rainwater in the ground, characterized in that the lower portion is formed to be located at the bottom 1/3 of the difference between the normal water level of the sump (1) and the maximum water level during the flood. Water pocket.
The method according to claim 1 or 2,

The filter net 60 is the upper end is folded into the outside of the first oil pipe (30) by a fixing band 61 is fastened so as to be detachable from the upper end of the first oil pipe (30) infiltration into the ground Water pocket with a penetrating well to store.