CN214272307U - Sponge city seepage drainage system with point seepage facility - Google Patents

Abstract

The utility model relates to a sponge city infiltration drainage system with point infiltration facility, which comprises a waterproof layer laid on a building roof and a drainage plate laid on the waterproof layer, wherein the edge of the drainage plate is communicated with a drainage groove, the drainage groove is communicated with an observation pipe, the upper end of the observation pipe is provided with the point infiltration facility, the point infiltration facility comprises a water storage well and a well cover arranged at the upper opening of the water storage well, the well cover is provided with a water inlet hole, the water storage well is provided with an infiltration hole, the upper end of the observation pipe is inserted into the water storage well, rainwater flows into the drainage groove after being filtered by the drainage plate, the rainwater enters the water storage well through the water inlet hole, when the rainwater is larger, the rainwater accumulated in the water storage well enters the drainage groove through the observation pipe to be discharged, the utility model discloses the point infiltration facility, the drainage plate, the drainage groove, the sedimentation observation well and the reservoir can store water, the water storage performance of the whole seepage and drainage system is improved, and the runoff control requirement of sponge city construction can be met.

Description

Sponge city seepage drainage system with point seepage facility

Technical Field

The utility model relates to a drainage system technical field specifically indicates a sponge city infiltration drainage system of area point infiltration facility.

Background

Many countries and regions face water shortage and other water problems of different degrees, therefore, the promotion of comprehensive development, utilization and water resource protection is a problem which is generally regarded by all countries, the sponge city is an effective means for coping with the shortage of urban water resource utilization at present, the sponge city refers to a city which can be like a sponge, has good 'elasticity' in the aspects of adapting to environmental changes, coping with natural disasters and the like, absorbs water, stores water, seeps water and purifies water when raining, and releases and utilizes the stored water when needed.

In the construction process in sponge city, the rainwater is collected to be the most important part, when the rainwater is collected, lay the one deck waterproof board earlier usually on the roof of building, then lay the drain bar on the waterproof board, be connected with the water drainage tank between the drain bar, then lay one deck filter cloth in the top of drain bar and water drainage tank, the top at the filter cloth is the shop cover earthing again, the rainwater passes filter cloth and gets into the drain bar, the water inlet of rethread water drainage tank flows into the water drainage tank, finally get into underground water tank in the water drainage tank, in order to observe the inside rivers condition of water drainage tank, usually at a plurality of observation pipes of drain tank upper end intercommunication, the upper end of observation pipe communicates to ground.

The existing drainage structure enters the drainage channel after rainwater permeates underground, and when the rainfall is too large, the rainwater permeation speed is slow, so that surface water accumulation is easily caused.

Disclosure of Invention

The utility model discloses to prior art's not enough, provide a sponge city of taking point infiltration facility oozes drainage system.

The utility model discloses a through following technical scheme realizes, provide a sponge city of area point infiltration facility oozes drainage system, including laying the waterproof layer on the building roof, laying the drain bar on the waterproof layer, the edge intercommunication of drain bar has the water drainage tank, the intercommunication has the observation pipe on the water drainage tank, the upper end of observation pipe is equipped with the point and permeates the facility, the point is permeated the facility and is included holding the well and install the well lid at holding well upper end opening part, it has the inlet opening to open on the well lid, it has the infiltration hole to open on the retaining well, insert in the retaining well the upper end of observation pipe.

Rainwater infiltration underground in this scheme, flow in the water drainage tank after the filtration through drain bar, carry out recycle after collecting the rainwater through the water drainage tank, the point infiltration facility is buried underground in the earthing, and make the well lid close with ground height, it has the inlet opening to open on the well lid, the rainwater passes through the inlet opening and gets into in the retaining well, and permeate to soil through the infiltration hole on the retaining well, when the rainwater is great, the infiltration speed in infiltration hole is not enough, thereby pile up the rainwater in the retaining well, the rainwater after piling up gets into the observation tube through the upper end of observation tube, finally discharge in getting into the water drainage tank through the observation tube.

As an optimization, the point infiltration facility further comprises a filter plate installed below the well lid. The filter in this scheme filters the rainwater that gets into in the retaining well, prevents debris such as great leaf from getting into in the retaining well.

Preferably, the water seepage holes are arranged on the side surface and/or the bottom surface of the water storage well. The seepage hole sets up in this scheme at the side and/or the bottom surface of retaining well to in permeating the soil with the rainwater through side and/or bottom surface.

Preferably, the side surface of the water storage well is provided with a convex rib. Protruding muscle in this scheme plays the additional strengthening to the side of retaining well, prevents to hold the well because of soil pressure damage.

As optimization, a filtering floor drain is arranged at an opening at the upper end of the observation tube. The filtering floor drain in the scheme filters rainwater entering the drain pipe, so that sundries are prevented from entering the drainage system.

Preferably, the filtering floor drain comprises a top cover and a vertical insertion pipe fixedly connected to the lower end face of the top cover, the insertion pipe is inserted into the upper end of the observation pipe, a water falling hole is formed in the top cover, the insertion pipe and the observation pipe form a water falling channel, and a filtering layer located on the water falling channel is arranged on the insertion pipe. The upper end of observation pipe is inserted to the intubate of this scheme, makes the rainwater get into the water channel through the hole in the water on the top cap, filters the back through the filter layer and gets into drainage system through the observation pipe.

Preferably, a strip-shaped padding plate is arranged between the drainage plate and the waterproof layer, and the padding plate is located in the middle of the drainage plate. Through being provided with rectangular form bed hedgehopping board between drain bar and waterproof layer, bed hedgehopping with the drain bar middle part to the rainwater in the drain bar of being convenient for flows into water drainage tank, prevents ponding in the drain bar, improves quality of water, extension drain bar life-span.

As an optimization, the drain bar includes profile shapes piece, geotechnical cloth and geomembrane, the profile shapes piece includes the profile shapes piece film, be equipped with a plurality of bellied hollow cup bulges that make progress on the profile shapes piece film, the bottom surface and the bellied top surface rigid coupling of cup of geotechnical cloth, the geomembrane laminating is in the below of profile shapes piece film. The cup-shaped bulges in the scheme are used for supporting the geotextile, the geotextile is used for bearing the earth covering, water in the earth covering passes through the geotextile to enter spaces among the cup-shaped bulges, flows on the special-shaped sheet bottom sheet and is finally discharged through the drainage groove, the geomembrane is attached below the special-shaped sheet bottom sheet, the bottom of the special-shaped sheet bottom sheet is a plane through the geomembrane, the waterproof layer is prevented from being sunk into a groove of the special-shaped sheet, the leakage hidden danger of a building structure is avoided, the geomembrane can be fixedly connected with the special-shaped sheet bottom sheet in advance, and the geomembrane can also be arranged in a split mode.

Preferably, the seepage and drainage system further comprises a sedimentation observation well and a reservoir, the drainage groove is communicated with the sedimentation observation well through a system drainage pipe, and the sedimentation observation well is communicated with the reservoir through a pipeline. Rainwater in the drainage channel enters the sedimentation observation well through a system drainage pipe and then enters the reservoir for storage after sedimentation.

Preferably, the system drain pipe is provided with a vertical part, the vertical part is a reducer pipe, and the inner diameter of the upper part of the reducer pipe is larger than that of the lower part of the reducer pipe. This scheme system drain pipe includes vertical portion, and the internal diameter on vertical portion upper portion is greater than the internal diameter of vertical section lower part to when making the rainwater through the whereabouts of vertical section, the rainwater is full of vertical section lower part, accelerates the discharge of rainwater through the siphon effect.

The utility model has the advantages that: the utility model discloses a sponge city infiltration drainage system with point infiltration facility, rainwater infiltrates underground, flows into the drainage channel after filtration through the drain board, and is recycled after being collected through the drainage channel, the point infiltration facility is buried in the earthing, and makes the well lid be close to the ground height, rainwater enters into the water storage well through the water inlet hole, and infiltrates into the soil through the infiltration hole on the water storage well, when the rainwater is bigger, the infiltration speed of the infiltration hole is not enough, thereby leading the rainwater to be piled up in the water storage well, the piled rainwater enters into the observation pipe through the upper end of the observation pipe, finally enters into the drainage system through the observation pipe and is discharged, the utility model not only can infiltrate the rainwater into the soil to be convenient for moisture preservation, but also can automatically discharge ponding when the water yield is too big, the structure is simple, the use effect is good, simultaneously the point infiltration facility, the drainage board, the drainage channel, the sedimentation observation well and the reservoir can store water, the water storage performance of the whole seepage and drainage system is improved, and the runoff control requirement of sponge city construction can be met.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the point infiltration facility of the present invention;

FIG. 3 is a cross-sectional view of the point infiltration facility of the present invention;

FIG. 4 is a schematic view of the water storage well of the present invention;

FIG. 5 is a schematic view of the bottom structure of the water storage well of the present invention;

FIG. 6 is a front view of the filtering floor drain of the present invention;

fig. 7 is a cross-sectional view taken along the plane a-a of fig. 6 according to the present invention;

FIG. 8 is a schematic view of the filtering floor drain of the present invention;

FIG. 9 is a schematic view of the bottom structure of the filtering floor drain of the present invention;

FIG. 10 is a schematic view of another filtering floor drain of the present invention;

FIG. 11 is an enlarged view of the section B of the present invention;

FIG. 12 is a schematic view of the structure of the drainage plate of the present invention;

FIG. 13 is a schematic view of the structure of the drainage channel of the present invention;

shown in the figure:

1. drainage plate, 2, drainage channel, 3, observation tube, 4, point infiltration facility, 5, filtering floor drain, 6, reservoir, 7, bed plate, 8, building roof, 9, sedimentation observation well, 10, system drainage pipe, 11, irregular sheet bottom sheet, 12, cup-shaped protrusion, 13, geotextile, 14, geomembrane, 21, groove body, 22, drainage channel water inlet, 41, water storage well, 411, water pipe passing hole, 412, circumferential rib, 413, vertical rib, 414, well cover ring, 415, water seepage hole, 42, filter plate, 421, filtering hole, 43, well cover, 431, water inlet hole, 4, drain pipe, 5, filtering floor drain, 51, top cover, 52, intubation tube, 53, barb, 54, filter screen, 55, outer ring water falling hole, 56, inner ring water falling hole, 57, screw, 58, nut, 59, gasket, 510, block.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

As shown in fig. 1-13, the utility model discloses a drainage system is oozed in sponge city of area point infiltration facility, including laying waterproof layer on building roof 8, laying drain bar 1 on the waterproof layer, the edge intercommunication of drain bar 1 has water drainage tank 2, be provided with rectangular form bed hedgehopping board 7 between drain bar 1 and the waterproof layer, bed hedgehopping board 7 is located the middle part of drain bar 1.

The seepage and drainage system further comprises a sedimentation observation well 9 and a water storage tank 6, the drainage groove 2 is communicated with the sedimentation observation well 9 through a system drainage pipe 10, and the observation well 5 is communicated with the water storage tank 6 through a pipeline.

As shown in fig. 12, the drainage plate 1 includes a special-shaped sheet, a geotextile 13 and a geomembrane 14, the special-shaped sheet includes a special-shaped sheet bottom sheet 11, the special-shaped sheet bottom sheet 11 is provided with a plurality of hollow cup-shaped protrusions 12 protruding upwards, and the cup-shaped protrusions 12 and the special-shaped sheet bottom sheet 11 are molded by integral film pressing and injection molding; the cup-shaped protrusions 12 and the irregular sheet bottom 11 may be formed as two separate structures by mechanical bonding, and generally, the integral film-pressing injection molding is preferred.

The cup-shaped protrusions 12 are arranged on the irregular sheet bottom 11 in a rectangular shape, and the cup-shaped protrusions 12 are arranged at equal intervals.

The bottom surface of the geotextile 13 is fixedly connected with the top surface of the cup-shaped bulge 12, and the geomembrane 14 is attached below the irregular sheet bottom sheet 11.

The geotextile 13 is used for supporting the covering soil and allowing rainwater to pass through, and the geotextile 13 is fixedly connected with the cup-shaped bulges 12 through hot melting or gluing.

The geomembrane 14 and the irregular sheet bottom sheet 11 can be fixedly connected in advance or can be arranged in a split mode, the geomembrane 14 and the irregular sheet bottom sheet 11 in the embodiment are fixedly connected together when being processed, the geomembrane 14 and the irregular sheet bottom sheet 11 are fixedly connected through hot melting or gluing, and the geotextile 13 and the cup-shaped bulges 1 are fixedly connected through hot melting or gluing.

The geomembrane 14 is a high-density polyethylene film, the thickness of the geomembrane 14 is larger than 0.5mm, and the geomembrane is fixedly connected to the bottom surface of the special-shaped sheet bottom sheet 11 after being tightened, so that the bottom surface of the special-shaped sheet bottom sheet 11 is a flat plane.

The geomembrane 14 may also be an asphalt waterproof roll material, such as asphalt felt, paper-base asphalt felt and the like which are made of natural asphalt, petroleum asphalt and coal asphalt as main raw materials and have good plasticity, water resistance, corrosion resistance and durability, and the asphalt waterproof roll material may be a roll material with a base or a roll material without a base.

The geomembrane 14 can also be a rubber plastic waterproof coiled material, an elastic tubeless waterproof coiled material, a waterproof film and the like which are made of raw materials such as chloroprene rubber, butyl rubber, ethylene propylene diene monomer rubber, polyvinyl chloride, polyisobutylene, polyurethane and the like, has the characteristics of high tensile strength, large elasticity and elongation, good water resistance and weather resistance and the like, can be used in a cold state, and has a long service life.

The cross section of the cup-shaped protrusion 12 is circular, the area of the top surface of the cup-shaped protrusion 12 is 0.6-0.95 times of the area of the bottom surface of the cup-shaped protrusion 12, and the top surface of the cup-shaped protrusion 12 is provided with a fillet.

As shown in fig. 13, the drainage channel 2 includes a channel body 21, the channel body 21 includes a top plate and a vertical plate extending downwards from two sides of the top plate, and the vertical plate is provided with a plurality of drainage channel water inlets 22.

The water drainage tank can vertically dock directly, can also realize the cross connection of water drainage tank through four way connection, and 4 lead to connecting the top surface and opening there is the viewing aperture, and the intercommunication has vertical observation tube 3 on the viewing aperture, and observation tube 3 also can directly communicate the up end at water drainage tank.

The system drain pipe 10 is connected to one of the four-way joints by a reducer pipe so that water in the drain tank flows into the system drain pipe 10.

As shown in fig. 1, the system drain pipe 10 is provided with a vertical portion, which is a reducer pipe, and the inner diameter of the upper portion of the reducer pipe is larger than that of the lower portion.

As shown in fig. 11, the middle position of the raised plate 7 in the width direction protrudes upwards, so that the lower part of the plate body 71 is hollow, and the width of the raised plate 7 is greater than 20cm and higher than 2-5 cm.

The two ends of the heightening plate 7 in the width direction are wedge-shaped, the lower end face of the wedge-shaped is horizontally arranged, and the included angle between the upper end face of the wedge-shaped and the horizontal plane is smaller than 15 degrees.

The up end and the lower terminal surface of bed hedgehopping board 7 all are equipped with the adhesive layer, and the adhesive layer sets up the up end and the wedge-shaped lower terminal surface at bed hedgehopping board 7 in this embodiment.

During construction, the heightening plate 7 is placed between the drainage plate 1 and the waterproof layer, and the length of the heightening plate is the same as that of the drainage plate, so that the middle part of the drainage plate is integrally heightened.

The utility model discloses a drainage channel 2, including drainage tank, observation pipe 2, point infiltration facility 41, well lid 43, drainage tank 2, the intercommunication has observation tube 3, and observation tube 3 is vertical hard pipe, and the diameter is usually at 80~150mm, the upper end of observation tube 3 is equipped with a little infiltration facility 4, a little infiltration facility 4 includes water storage well 41 and installs the well lid 43 at water storage well 41 upper end opening part, water storage well 41 is cylindrical bucket or square bucket, water storage well upper end opening, and the bottom has a bottom, and well lid 43 upper end is the same with ground height or is close.

The upper end of the observation tube 3 is inserted into the water storage well 41, the upper end of the observation tube 3 is located in the water storage well 41, and the upper end of the observation tube 3 is located at about half the position of the water storage well in the embodiment.

The well lid is at the upper end opening part of retaining well 41, the upper end of retaining well 41 is equipped with the well lid circle 414 with well lid 43 adaptation, the internal diameter of well lid circle 414 is greater than the internal diameter of retaining well 41, and well lid 43 places the upper end and the well lid circle 414 upper end parallel and level of inscribing well lid 43 at well lid circle 414.

Open on the well lid 43 has the inlet opening 431, the suitable undersize of size of inlet opening prevents that leaves etc. from blockking up the inlet opening 431, the inlet opening 431 array is provided with a plurality ofly, fill such as cobblestone, volcanic rock has been laid in the retaining well, plays the effect of purifying and filtering.

The water storage well further comprises a filter plate 42 arranged below the well cover 43, a plurality of filter holes 421 are formed in the filter plate 42 and used for preventing large sundries from entering the water storage well 41, and the middle of the filter plate 42 protrudes downwards. The filter plate 42 is placed in the well cover ring 414 below the well cover, and sundries in the filter plate can be cleaned by taking down the well cover 43 and the filter plate.

The shape of well lid 43 and filter 42 and the shape adaptation of retaining well 41, when the retaining well is cylindrical, well lid 43 and filter 42 are circular, and when the retaining well was square, well lid 43 and filter 42 were square.

The upper end of the observation tube 3 is positioned in the water storage well 41, and the bottom of the water storage well 41 is provided with a water tube through hole 411 with the same outer diameter as the observation tube 3.

The side of retaining well 41 is opened there is infiltration hole 415, infiltration hole 415 sets up the side and/or the bottom surface at retaining well 41, and infiltration hole 415 sets up the latter half of retaining well 41 side in this embodiment, and the bottom surface of retaining well 41 has also opened infiltration hole 415, and side and bottom surface all are provided with a plurality of infiltration holes 415, and infiltration hole diameter should not be too big, and infiltration hole 415 diameter is 10mm in this embodiment.

The side of retaining well 41 is equipped with protruding muscle, protruding muscle includes the protruding muscle 412 of circumference along retaining well 41 circumference setting, along the vertical protruding muscle 413 of the vertical setting of retaining well 41. The circumferential bead 12 and the vertical bead 413 are both projected outward.

And a filtering floor drain 5 is arranged at an opening at the upper end of the observation tube 3.

The filtering floor drain 5 comprises a top cover 51 and a vertical insertion pipe 52 fixedly connected to the lower end of the top cover 51, the insertion pipe 52 is inserted into the upper end of the observation pipe 3, a water falling hole is formed in the top cover 51, the insertion pipe 52 and the observation pipe 3 form a water falling channel, and a filtering layer located on the water falling channel is arranged on the insertion pipe 52.

The top cover 51 and the insertion tube 52 are made of stainless steel or plastic, the top cover 51 and the insertion tube 52 in this embodiment are made of stainless steel, and the top cover 51 and the insertion tube 52 are respectively fixed together after being formed by pressing.

The side of intubate 52 is equipped with outside stamping forming's barb 53, barb 53 is provided with 4 along circumference to together intubate 52 and observation pipe 3 card, when the intubate 52 need be extracted, should hold top cap 51 and upwards extract hard.

The top cover 51 is circular, the insertion pipe 52 is a circular pipe, the top cover 51 is coaxial with the insertion pipe, and the outer diameter of the top cover 51 is larger than that of the insertion pipe 52.

As shown in fig. 6 to 9, the top cap 51 may be provided with a cap 510 protruding upwards, the cap 510 is located in the middle of the top cap 51, the thickness of the cap 510 is equal to or less than the thickness of the body of the top cap 51, the upper end of the cap 510 is a circular plane, the side surface of the cap 510 is a spherical surface, and the water falling holes are formed in the top surface and the side surface of the cap 510 to prevent the water falling holes from being blocked.

As shown in fig. 10, the top cover 51 may also be a flat plate on which the drainage hole is provided.

The water falling hole comprises a circle of outer ring water falling holes 55 and two circles of inner ring water falling holes 56, the outer ring water falling holes 55 are long holes extending along the radial direction, the outer ring water falling holes 55 are arranged on the outer ring of the inner ring water falling holes 56, and the inner ring water falling holes 56 are long holes extending along the circumferential direction.

If the cap 510 is provided, the inner ring water drop hole 56 is provided at an upper end surface of the cap 510, the outer ring water drop hole 55 is provided at a side surface of the cap 510, and the outer ring water drop hole 55 extends to a bottom of the cap 510.

The filtering layer comprises a filtering net 54 fixedly connected to the bottom surface of the insertion pipe 52, and the filtering net 54 is a hard metal net.

The outer diameter of the filter screen 54 is larger than the inner diameter of the insertion tube 52, a screw 57 sequentially penetrates through the top cover 51 and the filter screen 54 from the upper end of the top cover 51 to the lower part, the filter screen 54 is fixed on the bottom surface of the insertion tube 52 through a nut 58, and a gasket 59 is arranged between the head of the screw 57 and the top cover 51.

The nut 58 is a butterfly nut and is fastened to the lower end surface of the filter screen 54.

The filter layer further comprises a geotextile wrapped on the bottom surface of the insertion tube 52, the geotextile is wrapped on the bottom surface of the insertion tube 52 and is larger than the bottom surface of the insertion tube 52, the geotextile can be wrapped on the lower end surface of the filter screen 54 and wrap the side surface of the insertion tube 52, and therefore the geotextile is clamped through the insertion tube 52 and the observation tube 3.

The geotextile can allow water to flow through, so that the water can be secondarily filtered. After a period of use, the insertion tube 52 is pulled out of the viewing tube 3, the geotextile is removed for cleaning, and the filter screen 54 is removed for cleaning.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides a sponge city infiltration drainage system of tape site infiltration facility which characterized in that: including laying waterproof layer on building roof (8), laying drain bar (1) on the waterproof layer, the edge intercommunication of drain bar (1) has water drainage tank (2), the intercommunication has observation tube (3) on water drainage tank (2), the upper end of observation tube (3) is equipped with infiltration facility (4) a bit, the point infiltration facility is including holding well (41) and installing well lid (43) at water storage well (41) upper end opening part, it has inlet opening (431) to open on well lid (43), it has infiltration hole (415) to open on water storage well (41), the upper end of observation tube (3) is inserted in water storage well (41).

2. The sponge city seepage drainage system with point seepage facilities as claimed in claim 1, wherein: the point infiltration installation (4) further comprises a filter plate (42) mounted below the well lid (43).

3. The sponge city seepage drainage system with point seepage facilities as claimed in claim 1, wherein: the seepage holes (415) are arranged on the side surface and/or the bottom surface of the water storage well (41).

4. The sponge city seepage drainage system with point seepage facilities as claimed in claim 1, wherein: and the side surface of the water storage well (41) is provided with a convex rib.

5. The sponge city seepage drainage system with point seepage facilities as claimed in claim 1, wherein: and a filtering floor drain (5) is arranged at an opening at the upper end of the observation tube (3).

6. The sponge city seepage drainage system with point seepage facilities as claimed in claim 5, wherein: filter floor drain (5) and include vertical intubate (52) of top cap (51) and rigid coupling terminal surface under top cap (51), intubate (52) insert the upper end of observing pipe (3), it has the hole of falling into the water to open on top cap (51), intubate (52) and observation pipe (3) constitute the passageway of falling into the water, be equipped with the filter layer that is located on the passageway of falling into the water on intubate (52).

7. The sponge city seepage drainage system with point seepage facilities as claimed in claim 1, wherein: a strip-shaped padding plate (7) is arranged between the drainage plate (1) and the waterproof layer, and the padding plate (7) is located in the middle of the drainage plate (1).

8. The sponge city seepage drainage system with point seepage facilities as claimed in claim 1, wherein: drain bar (1) includes profile shapes piece, geotechnological cloth (13) and geomembrane (14), the profile shapes piece includes profile shapes piece film (11), be equipped with a plurality of bellied hollow cup arch (12) that make progress on profile shapes piece film (11), the bottom surface of geotechnological cloth (13) and the top surface rigid coupling of cup arch (12), geomembrane (14) laminating is in the below of profile shapes piece film (11).

9. The sponge city seepage drainage system with the point seepage facility according to any one of claims 1 to 8, characterized in that: the seepage and drainage system further comprises a sedimentation observation well (9) and a water storage tank (6), the drainage groove (2) is communicated with the sedimentation observation well (9) through a system drainage pipe (10), and the sedimentation observation well (9) is communicated with the water storage tank (6) through a pipeline.

10. The sponge city seepage drainage system with point seepage facilities as claimed in claim 9, wherein: the system drain pipe (10) is provided with a vertical part, the vertical part is a reducer pipe, and the inner diameter of the upper part of the reducer pipe is larger than that of the lower part of the reducer pipe.

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