CN112031114A - Seepage stagnation type storage regulation sponge parking lot and rainwater storage regulation method - Google Patents

Abstract

The invention relates to the field of sponge city construction, and provides a hysteresis type regulation and storage sponge parking lot, comprising: a hardened site (1), including a road (11) and a plurality of parking spaces (12); LID rainwater regulation and storage facilities (2), The water storage device (3) is arranged around the parking space and the height is lower than the height of the parking space; On the upper surface of the LID rainwater storage facility, the rainwater inlet and the silt well, and between the silt well and the water storage module are connected by rainwater pipes; a plurality of perforated seepage pipes (4) are arranged to set the soil layer under the rainwater pipes (7) and communicated with the sedimentation well, the pipe wall of the perforated seepage pipe is provided with a plurality of drainage holes for draining the soil layer. The parking lot can ensure the infiltration and retention of rainwater, so that the rainwater can penetrate into the soil effectively and achieve the purpose of "natural accumulation, natural penetration and natural purification" of the sponge.

Description

Permeable stagnation type regulation and storage sponge parking lot and rainwater regulation and storage method

technical field

The invention relates to the field of sponge city construction, in particular to a novel seepage stagnation type regulating and storage sponge parking lot and a rainwater regulating and storage method.

Background technique

At present, the construction of sponge city is in full swing in my country. During the construction process, the concept of sponge city has been continuously understood and accepted by people. However, with the advancement of sponge city construction, the current construction technology of sponge city can no longer face the Heavier various working conditions, especially the problem of adjusting and storing rainwater in the parking lot during the sponge construction process cannot be effectively solved.

At present, the main idea of sponge city is to first reduce the amount of rainwater runoff by reducing the comprehensive net flow coefficient in the site, and then reduce the discharge of rainwater that has already generated runoff through LID water storage facilities, so as to achieve the goal of "seepage, stagnation and net use and drainage" in turn. Sponge city concept. However, when this concept is applied to large parking lots, it is difficult to implement. The reasons are as follows: First, sponge cities require a large number of permeable facilities to reduce the comprehensive net flow coefficient of the site. At present, the load strength of permeable facilities cannot reach the same level. The load strength of the traditional non-permeable pavement. For the parking lot where vehicles enter and exit frequently, it is undoubtedly necessary to increase the maintenance frequency and frequency of the parking lot; if you want to reduce the maintenance frequency and frequency of the parking lot, you must increase the elevation and level of the materials used in the permeable facilities. , which is tantamount to increasing the cost of a construction. Second, the parking lot is a site with a high hardening area and a small green area, and the green space is often designed as a strip or point. The water storage capacity of the sinking facilities made in these green spaces is extremely limited, making it difficult to meet the site requirements The total annual runoff control rate, so if you want to achieve the target, you need to build a water storage module, but the excess rainwater in the water storage module cannot be fully utilized. In order to prevent the water body from smelling, it is often discharged. In fact, such sponges are not used. Sponge effect.

Chinese Patent Publication No. CN210714001U discloses an ecological parking lot for rainwater runoff control. The parking lot body is provided with a rain garden planting area, an anti-seepage membrane is arranged above the original soil layer on the bottom surface of the rain garden planting area, and above the anti-seepage membrane From bottom to top, there are blind pipes for water collection, gravel layer, filter layer and planting soil layer, and the rainwater above the anti-seepage membrane is finally discharged into the municipal rainwater system. This scheme has the following disadvantages:

(1) Although this method can achieve the purpose of effective peak-staggered drainage, after the rainwater penetrates into the pebble layer, due to the existence of the seepage-proof membrane and the seepage pipe in the pebble layer, the rainwater cannot effectively penetrate into the ground, and the "seepage" cannot be effectively reached. Requirements for "seepage" in "detained storage and net discharge". (2) Due to the existence of a large number of permeable facilities in the site, a large amount of water in the greening soil flows into the permeable facilities, which greatly increases the maintenance cost of seedlings.

Chinese Patent Publication No. CN109296231A discloses a sponge ecological parking lot, including parking space, plant box, rainwater storage system, watering and spraying system, the parking lot uses a large water tank to collect rainwater, and then uses a series of electronic control and intelligent energy The electronic control system sprays the rainwater back into the site for reuse. The parking lot has the following shortcomings: (1) The parking lot relies entirely on the control of the digital system to adjust the various functions of the sponge, which requires professional maintenance personnel to align and perform regular inspection and maintenance, and a large number of electronic controls and Digital equipment makes the cost of one-time construction and subsequent maintenance very high. (2) After the operation experience of sponge city in the past few years, it can be seen that after the rain, the green plants should be watered and maintained here for 2-3 days. After the rainwater is stored in the underground water storage facility for 2 days, it will stink, and after 5 days of storage, it will stink. Black and smelly, the odor caused by watering with this type of water will affect the use of the parking lot. (3) There are many suspended substances in the rainwater, and the use of sprinkler irrigation and micro-sprinkler irrigation will generate a large workload on the irrigation facilities and easily damage the equipment. Therefore, it is necessary to frequently replace the blocked and damaged equipment, which increases maintenance. cost. (4) The control circuits of the case are all over the ground. If the maintenance is improper, safety accidents such as leakage are very likely to occur.

Chinese Patent Publication No. CN111395099A discloses a sponge ecological parking lot, including a drainage system and several groups of parking units, each group of parking units discharges rainwater into a bioretention area, and then discharges rainwater from the bioretention area into a municipal rainwater system. The parking lot has the following shortcomings: (1) The drainage areas of several groups of parking units are provided with vegetation layers, which increases the difficulty of maintenance and is not suitable for the large load intensity of the parking lot. (2) The vegetation layer is covered with permeable concrete, the concrete is rigid, and the plants cannot take root down, making it difficult to maintain the vegetation. (3) The infiltration of rainwater only stays on the surface layer, and the excess rainwater can only be discharged into the reuse system or the rainwater pipe network. "Infiltration" requirements.

Therefore, it is urgent to develop a truly permeable, stagnable, storable, and drainable sponge parking lot.

SUMMARY OF THE INVENTION

The technical purpose of the present invention is to solve the above-mentioned defects of the prior art, and to provide a stagnation type regulation and storage sponge parking lot and a rainwater regulation and storage method, so as to achieve the purposes of infiltration, stagnation, storage and drainage.

As an aspect of the present invention, there is provided a stagnation type regulating and storage sponge parking lot, comprising:

Hardened site, including roads and multiple parking spaces;

LID rainwater storage facilities are arranged around the parking space and the height is lower than the height of the parking space;

The water storage device includes a rainwater inlet, a rainwater pipeline, a silt well and a water storage module, the rainwater inlet is arranged on the upper surface of the LID rainwater storage facility, and the rainwater pipeline, the silt well and the water storage module are all arranged In the soil layer below the hardening site and/or the LID rainwater storage facility, the rainwater inlet and the silt well and between the silt well and the water storage module are connected by the rainwater pipeline ;

A plurality of perforated seepage and drainage pipes are arranged in the soil layer below the rainwater pipeline and communicated with the silt well. The pipe wall of the perforated seepage and drainage pipes is provided with a plurality of drainage holes for draining the soil layer.

According to an exemplary embodiment of the present invention, the perforated seepage and drainage pipes are arranged at a position of at least 800 mm below the hardened site and/or the LID rainwater storage facility.

According to an exemplary embodiment of the present invention, a gravel cushion is provided around the perforated seepage pipe.

According to an exemplary embodiment of the present invention, the water storage device further includes a plurality of water storage pipes, the silt wells are multiple, and each water storage pipe is connected to two silt wells and is connected with a plurality of perforated seepage pipes connected, the height of the water storage pipe is lower than the height of the rainwater pipe.

According to an exemplary embodiment of the present invention, the plurality of perforated seepage pipes are arranged in parallel at equal intervals.

According to an exemplary embodiment of the present invention, the height of the perforated seepage drainage pipe is 50-150 mm higher than the bottom of the water storage pipe.

According to an exemplary embodiment of the present invention, the diameter of the water storage pipe is greater than or equal to the diameter of the rainwater pipe.

According to an exemplary embodiment of the present invention, the diameter of the water storage pipe is 200-400 mm larger than the diameter of the rainwater pipe.

According to an exemplary embodiment of the present invention, the cross-sectional area of the rainwater pipeline satisfies the following formula 1:

Q=Av;

Among them, Q is the design flow, the unit is m ³ /s;

A is the cross-sectional area of the rainwater pipe, the unit is m ² ;

v is the flow velocity in m/s.

The design flow is calculated based on the local rainfall.

According to an exemplary embodiment of the present invention, the diameter of the water storage pipe satisfies the following formula 2:

Among them, D is the diameter of the water storage pipe, the unit is m;

V is the amount of rainwater that needs to be stored in the plot, and the unit is m ³ ;

S is the paving area of gravel layer, the unit is m ² ;

h is the thickness of the gravel layer, the unit is m;

n is the porosity of the gravel layer;

L is the length of the water storage pipeline in the plot, the unit is m;

π is 3.1415926;

When the diameter calculated by the formula 2 is smaller than the diameter of the rainwater pipe, the value of the diameter of the water storage pipe is the diameter of the rainwater pipe.

According to an exemplary embodiment of the present invention, h takes a value of 0.3-0.4m.

According to an exemplary embodiment of the present invention, n is 0.19-0.32.

The cost of the water storage pipe network is the same as that of the rainwater pipeline.

According to an exemplary embodiment of the present invention, the diameter of the rainwater pipe is larger than the diameter of the perforated seepage drainage pipe.

According to an exemplary embodiment of the present invention, the diameter of the perforated seepage pipe is 100-200 mm.

According to an exemplary embodiment of the present invention, the hardening site adopts a water-impermeable paving material.

According to an exemplary embodiment of the present invention, the hardening site adopts impermeable asphalt or impermeable concrete.

According to an exemplary embodiment of the present invention, each parking space is connected to the LID rainwater storage facility, each parking space is a slope structure, and the height of the part close to the LID rainwater storage facility is lower than that far from the LID rainwater storage facility. The height of the section of the storage facility.

According to an exemplary embodiment of the present invention, the height of the rainwater inlet is higher than the height of the LID rainwater storage facility and lower than the height of the parking space.

According to an exemplary embodiment of the present invention, the hysteresis type regulating and storage sponge parking lot further includes a plurality of pipe plugs, one end of the perforated seepage drainage pipe is communicated with the silt well, and the other end is arranged on the hardening site and/or or LID stormwater storage facilities on the ground and blocked by the pipe.

According to an exemplary embodiment of the present invention, the upper part of the water storage module is provided with an overflow port, and the overflow port is connected with the municipal rainwater pipe network system.

According to an exemplary embodiment of the present invention, an artificial channel communicating with the ground of the hardware site is provided above the silt well.

As a second aspect of the present invention, there is provided a method for regulating and storing rainwater in a seepage type regulating and storing sponge parking lot, comprising the following steps:

Adopt the stagnation type regulation and storage sponge parking lot for rainwater regulation and storage;

Drain rainwater from the hardened site into the LID rainwater storage facility;

The rainwater that exceeds the storage capacity of the LID rainwater storage facility is discharged into the hardened site and/or the silt well under the LID rainwater storage facility through the rainwater outlet;

The rainwater in the silt well is discharged into the soil layer through the perforated seepage pipe, and the rainwater exceeding the storage capacity of the silt well is discharged into the water storage module and/or the municipal rainwater pipe network system.

The beneficial effects of the present invention are:

1) The seepage and stagnation type regulation and storage sponge parking lot of the present invention discharges the rainwater of the hardened site into the LID rainwater regulation and storage facility, realizing the functions of "storage" and "stagnation"; the rainwater exceeding the LID rainwater regulation and storage facility enters the silt well , through the perforated seepage pipe to discharge to the soil layer, realizing the function of "seepage"; the rainwater that exceeds the storage capacity of the sediment well is discharged into the water storage module to realize the functions of "storage" and "stagnation"; The rainwater with the storage capacity of the water storage module is discharged to the municipal rainwater pipe network system, realizing the function of "draining"; the rainwater collected in the water storage module can be pumped out and reused, realizing the function of "use".

Specifically, the advantages of the present invention are described from the following aspects:

(1) The parking lot of the present invention can ensure the infiltration and retention of rainwater, so that the rainwater can penetrate into the soil effectively and achieve the purpose of "natural accumulation, natural penetration, and natural purification" of the sponge.

(2) The present invention improves the performance of the sponge on the site, and it is easier to combine the index requirements of the sponge with the actual function. If the site is a permeable pavement parking lot, the load capacity is not strong, and a large water storage device cannot be installed under the parking lot, then only the LID green storage facilities and the gravel layer under the permeable pavement can store water. Water function is not strong. Since the present invention adopts a hardened site, a water storage device can be arranged under the hardened site to increase the water storage capacity. Therefore, the present invention not only has the LID green regulation and storage facility, but also has the water storage function of the gravel layer, and also has the rainwater regulation and storage capability combining pipeline water storage and water storage module, and realizes the effect of peak shifting and stagnation. Obviously, the concept of the sponge requirements is practically achieved.

(3) The present invention does not increase the primary construction cost, but can efficiently reduce the later maintenance and operation cost. With the advancement of the sponge city, the price of sponge construction materials has also risen, but the hardened site part of the present invention uses the original mature non-permeable hardened pavement method for construction, which reduces the production cost of the site hardened pavement, and the perforated seepage pipe material is arranged. It is a PVC-U pipe, and the water storage pipe is a HDPE double-wall corrugated pipe, both of which are existing mature materials with low price and simple practice. Especially the water storage pipeline, in fact, the idea is to enlarge and thicken the original rainwater pipeline to achieve the purpose of water storage and connection. After the cost calculation, the construction cost has not actually increased, but because the mature hardening pavement technology is used, there is no need to use it. More road maintenance is carried out, especially in the northern region, which reduces the maintenance cost caused by freezing and thawing of permeable pavement.

(4) Make full use of rainwater for pipeline flushing and maintenance, which not only saves water resources, but also solves the problem that black and smelly rainwater in the water storage module cannot be reused.

(5) Rainwater from reverse infiltration into the ground can provide sufficient water supply for trees and shrubs with deep roots, reduce the cost of greening and maintenance of the site, and improve the survival rate of seedlings.

Description of drawings

Figure 1 shows the floor plan of the hysteresis type regulation and storage sponge parking lot.

Figure 2 shows the schematic diagram of the section A-A.

Figure 3 shows a schematic diagram of the B-B section.

Among them, 1—hardening site, 11—road, 12—parking space, 2—LID rainwater storage facility, 3—water storage device, 31—rainwater outlet, 32—rainwater pipeline, 33—sink well, 34—water storage module , 35—water storage pipe, 4—perforated seepage pipe, 5—pipe plugging, 6—crushed stone cushion, 7—soil layer.

Detailed ways

Embodiments of the invention are described in detail below, but the invention can be practiced in many different ways as defined and covered by the claims.

According to the first embodiment of the present invention, in order to solve the technical barriers encountered in the current sponge city construction and reduce the operation and maintenance cost of the sponge city, a hysteresis type regulation and storage sponge parking lot is provided, as shown in FIG. 1 , including: hardening Site 1, LID rainwater storage facility 2, water storage device 3, multiple perforated seepage pipes 4 and multiple pipe plugs 5.

As shown in FIGS. 1 and 2 , the hardening site 1 includes a road 11 and a plurality of parking spaces 12 . The hardened site adopts impervious paving materials, such as impervious asphalt or impervious concrete. The LID rainwater storage facility 2 is arranged around the parking space 12 at a height lower than that of the parking space 12 . Each parking space 12 is connected to the LID rainwater storage facility 2, each parking space 12 is a slope structure, and the height of the part close to the LID rainwater storage facility 2 is lower than the height of the part far from the LID rainwater storage facility 2, so that it rains When the rainwater flows into the LID rainwater storage facility 2 from the parking space 12 . LID rainwater storage facility 2 is a sunken green LID rainwater storage facility with plants planted in the facility for rainwater storage.

As shown in FIG. 2 , under the hardening site 1 and the LID rainwater storage facility 2 is a soil layer 7 .

As shown in Figures 1-3, the soil layer 7 is provided with a water storage device 3, a plurality of perforated seepage pipes 4 and pipe plugs 5. The water storage device 3 includes a rainwater inlet 31, a rainwater pipeline 32, a mud well 33, a water storage module 34 and a water storage pipe 35. The rainwater inlet 31 is arranged on the upper surface of the LID rainwater storage facility 2 and is an overflow rainwater outlet, Its height is higher than the height of the LID rainwater storage facility 2 and lower than the height of the parking space 12 . When the LID rainwater storage facility 2 cannot store rainwater, the rainwater will accumulate on the upper surface of the LID rainwater storage facility 2 . When the height of the rainwater inlet 31 is reached, the rainwater will flow into the rainwater inlet 31 . The rainwater pipeline 32 , the silt well 33 , the water storage module 34 and the water storage pipe 35 are all arranged in the soil layer 7 below the hardening site 1 and/or the LID rainwater storage facility 2 . The rainwater inlet 31 and the silt well 33 and between the silt well 33 and the water storage module 34 are all connected by rainwater pipes 32 , and each two silt wells 33 are connected by a water storage pipe 35 . The rainwater pipe 32 can calculate the rainwater volume according to the requirements of Article 3.2 of "Code for Design of Outdoor Drainage" GB50014-2006 (2016 edition), and then calculate the diameter of the pipe according to the hydraulic calculation of Article 4.2. Specifically, the diameter of the rainwater pipe 32 is obtained by calculating the cross-sectional area, and the cross-sectional area of the rainwater pipe 32 satisfies the following formula 1:

Q=Av;

Among them, Q is the design flow, the unit is m ³ /s; the design flow is calculated according to the local rainfall;

A is the cross-sectional area of the rainwater pipe, the unit is m ² ;

v is the flow velocity in m/s.

The upper part of the silt well 33 is provided with an artificial channel which communicates with the ground of the hardware site 1, and the lower part is provided with a silt tank for silt. The upper part of the water storage module 34 is provided with an overflow port, and the overflow port is connected with the municipal rainwater pipe network system through the rainwater pipe 32 . The rainwater accumulated in the water storage module 34 can be reused to the LID rainwater storage facility 2, and then infiltrated into the soil layer through the perforated seepage and drainage pipe 4 or reused to other places where rainwater needs to be replenished, so as to prevent the accumulation of rainwater from causing blackening and odor. The diameter of the water storage pipe 35 is larger than that of the rainwater pipe 32 , and the height of the water storage pipe 35 is lower than the height of the rainwater pipe 32 . The diameter of the water storage pipe 35 is 200-400mm larger than the diameter of the rainwater pipe 32 or satisfies the following formula 2:

Among them, D is the diameter of the water storage pipe, the unit is m;

V is the amount of rainwater that needs to be stored in the plot, and the unit is m ³ ;

S is the paving area of gravel layer, the unit is m ² ;

h is the thickness of the gravel layer, the unit is m;

n is the porosity of the gravel layer;

L is the length of the water storage pipeline in the plot, the unit is m;

π is 3.1415926;

When the diameter calculated by the formula 2 is smaller than the diameter of the rainwater pipe 32 , the value of the diameter of the water storage pipe 35 is the diameter of the rainwater pipe 32 .

The material of the water storage pipe 35 uses mature HDPE double-wall corrugated pipes, so that the water storage pipe 35 not only has the function of connecting the sedimentary well 33, but also has a strong water storage function. Hardening site 1, rainwater pipes 32, sediment wells 33, water storage modules 34 and water storage pipes 35 have low material costs, do not require frequent maintenance and replacement, and can achieve a good effect of regulating and storing rainwater, which is more suitable for frequent vehicles. Access to the parking lot.

As shown in Figures 1-3, a plurality of perforated seepage pipes 4 are arranged in the soil layer 7 below the rainwater pipes 31 and communicate with the sediment well 33 through the water storage pipes 35. The perforated seepage pipes 4 are arranged in the hardening site 1 and / or 800mm below the LID rainwater storage facility 2, and the perforated seepage drainage pipe 4 is arranged at a height of 100mm higher than the bottom of the water storage pipe 35. So that rainwater can seep to the depths. The diameter of the perforated seepage pipe 4 is small, 100-200mm, and a plurality of drainage holes are arranged on the pipe wall to drain water to the soil layer 7. The perforated seepage pipes 4 are arranged in parallel at equal intervals, which is conducive to the slow and uniform drainage of rainwater. seep. The perforated seepage pipe 4 is made of PVC-U material, and the cost is low. A gravel cushion 6 is arranged around the perforated seepage and drainage pipe 4, which can make the drainage holes better drain rainwater, and can also accumulate part of the rainwater, and at the same time provide a supporting force for the perforated seepage and drainage pipe 4, and effectively disperse the perforated seepage and drainage pipe 4 The force on the top makes the perforated seepage pipe 4 not easily damaged. One end of the perforated seepage drainage pipe 4 is connected to the water storage pipe 35 , and the other end is arranged on the ground of the hardening site 1 and/or the LID rainwater storage facility 2 and is blocked by the pipe plug 5 .

According to the second embodiment of the present invention, a method for regulating and storing rainwater in a hysteresis type regulating and storing sponge parking lot is provided, as shown in Figures 1-3, including the following steps:

Adopt the stagnation type regulation and storage sponge parking lot of the first embodiment for rainwater regulation and storage;

The rainwater falls into the hardening site 1, and is discharged into the LID rainwater storage facility 2 through the slope structure of the parking space 12;

The LID rainwater storage facility 2 regulates and stores rainwater. When the rainwater exceeds the storage capacity of the LID rainwater storage facility 2, the rainwater accumulates on the upper surface of the LID rainwater storage facility 2, and the water level rises to a certain height from the rainwater outlet. 31 is discharged into the silt well 33 through the rainwater pipeline 32;

The rainwater in the sediment well 33 rises and flows into the perforated seepage pipe 4 through the water storage pipe 35, and is discharged to the gravel cushion 6 through the drainage holes of the perforated seepage pipe 4, and the gravel cushion 6 fully absorbs water and is discharged into the soil In layer 7, groundwater is recharged;

The rainwater that exceeds the storage capacity of the silt well 33 rises to the height of the rainwater pipeline 32, and is discharged into the water storage module 34 through the rainwater pipeline 32 on the right side of FIG. 2 and FIG. 3. When the water storage module 34 cannot withstand the rainwater, The rainwater flows out into the municipal rainwater pipe network system through the overflow port on the upper part of the water storage module 34 .

It can be seen that the sponge parking lot of the present invention can ensure the infiltration and retention of rainwater, so that the rainwater can penetrate into the soil effectively and achieve the purpose of "natural accumulation, natural penetration and natural purification" of the sponge.

In addition, when the sedimentation in the perforated seepage pipe 4 causes poor water flow, the pipe block 5 can be opened, the rainwater in the water storage module 34 can be extracted, the pipeline shall be flushed, and then the sedimentation tank in the sedimentation well 33 can be cleaned. After flushing and cleaning, the sponge parking lot can continue to be used normally.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (11)

1. The utility model provides a ooze type regulation and storage sponge parking area which characterized in that includes:

a hardening site (1) comprising a road (11) and a plurality of parking spaces (12);

the LID rainwater storage facility (2) is arranged around the parking space (12) and is lower than the parking space (12);

the water storage device (3) comprises a rainwater inlet (31), a rainwater pipeline (32), a mud trap (33) and a water storage module (34), wherein the rainwater inlet (31) is arranged on the upper surface of the LID rainwater storage facility (2), the rainwater pipeline (32), the mud trap (33) and the water storage module (34) are all arranged in a soil layer (7) below the hardening site (1) and/or the LID rainwater storage facility (2), and the rainwater inlet (31) and the mud trap (33) and the water storage module (34) are all connected through the rainwater pipeline (32);

and the perforated seepage and drainage pipes (4) are arranged in the soil layer (7) below the rainwater pipeline (32) and are communicated with the mud pit (33), and a plurality of drainage holes for draining water to the soil layer are formed in the pipe wall of each perforated seepage and drainage pipe (4).

2. A stagnation type storage sponge garage according to claim 1, characterized in that the perforated percolating pipe (4) is placed at least 800mm below the hardening ground (1) and/or LID rain storage facility (2).

3. The permeable storage sponge parking lot according to claim 1, wherein the water storage device (3) further comprises a plurality of water storage pipes (35), the mud-depositing wells (33) are multiple, each water storage pipe (35) is connected with two mud-depositing wells (33) and connected with a plurality of perforated permeable pipes (4), and the height of the water storage pipe (35) is lower than that of the rainwater pipeline (32).

4. The seepage stagnation type storage sponge parking lot according to claim 3, wherein the plurality of perforated seepage pipes (4) are arranged in parallel at equal intervals.

5. The stagnation type storage sponge parking lot as claimed in claim 1, wherein the diameter of the perforated seepage pipe (4) is 100-200 mm.

6. The seepage stagnation type storage sponge parking lot as claimed in claim 1, wherein the hardening site (1) is made of a non-permeable paving material.

7. Seepage stagnation type regulation sponge parking lot of claim 1, characterized in that, each parking stall (12) is connected with LID rainwater regulation facility (2), each parking stall (12) is a slope structure, and the height of the part close to LID rainwater regulation facility (2) is lower than the height of the part far away from LID rainwater regulation facility (2).

8. Seepage stagnation storage sponge parking lot according to claim 1, characterized in that the height of the gully (31) is higher than the height of the LID rainwater storage facility (2) and lower than the height of the parking space (12).

9. The seepage stagnation type storage sponge parking lot as claimed in claim 1, wherein a gravel cushion layer (6) is arranged around the perforated seepage pipe (4).

10. A percolation type storage sponge parking lot according to claim 1, characterized by further comprising a plurality of pipe plugs (5), wherein one end of the perforated percolation pipe (4) is communicated with a mud caisson (33), and the other end is arranged on the ground of the hardening site (1) and/or the LID rainwater storage facility (2) and plugged by the pipe plugs (5).

11. The rainwater storage method for the seepage stagnation type storage regulation sponge parking lot is characterized by comprising the following steps of:

rainwater storage is carried out by adopting the seepage type storage regulation sponge parking lot of any one of claims 1-10;

draining rainwater from the hardening site (1) into an LID rainwater storage facility (2);

discharging rainwater exceeding the storage capacity of the LID rainwater storage facility (2) into a hardening site (1) and/or a mud trap (33) below the LID rainwater storage facility (2) through a rainwater port (31);

rainwater in the mud trap (33) is discharged into the soil layer (7) through the perforated seepage and drainage pipe (4), and rainwater exceeding the regulation and storage capacity of the mud trap (33) is discharged into the water storage module (34) and/or the municipal rainwater pipe network system.

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