Multistage water storage sponge facility

Abstract

The utility model relates to the technical field of urban rainwater treatment, and discloses a multi-stage water storage sponge facility which comprises a perlite-containing fluffy plain soil layer, the lower side of the perlite-containing fluffy plain soil layer is in contact connection with permeable geotextile, the lower side of the permeable geotextile is in contact connection with a gravel layer, the lower side of the gravel layer is in contact connection with a coarse sand layer, and the coarse sand layer is in contact connection with a water storage layer. The lower layer of the coarse sand layer is in contact connection with anti-seepage geotechnical cloth, the lower side of the anti-seepage geotechnical cloth is fixedly connected with a drainage pipeline, a drainage groove is formed in the middle of the drainage pipeline, an overflow well is installed at one end of the drainage pipeline, an overflow pipe is installed at the upper end of the overflow well, and a drainage opening is formed in the lower end of the overflow well. A retaining wall is arranged on one side of the perlite-containing fluffy plain soil layer, and a reinforcing assembly is arranged on the upper side of the drainage pipeline. According to the utility model, the effect that rainwater rapidly infiltrates into a reservoir or a river or a lake is realized through good structures such as the perlite-containing fluffy plain soil layer, the permeable geotextile, the rubble layer, the coarse sand layer and the impermeable geotextile.

Description

Technical Field

[0001] The utility model relates to the technical field of urban rainwater treatment, in particular to a multi-stage water storage sponge facility. Background Art

[0002] Sponge city refers to improving the city's ability to absorb, store, infiltrate and purify water so that the city has good "elasticity" in adapting to environmental changes and responding to natural disasters. It absorbs, stores, infiltrates and purifies water when it rains, and releases and utilizes the stored water when needed. Urban rainwater treatment should combine natural methods with artificial measures. On the premise of ensuring the safety of urban drainage and flood prevention, it should maximize the accumulation, infiltration and purification of rainwater in urban areas, promote the utilization of rainwater resources and the protection of the ecological environment. In the process of sponge city construction, the systematic nature of natural precipitation, surface water and groundwater should be coordinated, and all aspects of water recycling such as water supply and drainage should be coordinated, and its complexity and long-term nature should be considered.

[0003] After searching, a multi-stage water storage sponge facility is disclosed in the announcement number: CN214461066U, which relates to the field of urban rainwater treatment technology and aims to solve the problem that a large amount of rainwater discharged into the sewer will increase the overall drainage pressure of the city, and if water accumulates in low-lying areas, it will cause floods. The key points of its technical solution are that it includes a primary filter pool, a secondary filter pool, a tertiary filter pool and a quaternary filter pool with decreasing heights in sequence, an overflow well is arranged downstream of the quaternary filter pool, a drainage pipe connected to the river channel is arranged on the side of the overflow well, and an overflow well cover is arranged on the top surface of the overflow well. The multi-stage water storage through the primary filter pool, the secondary filter pool, the tertiary filter pool and the quaternary filter pool, on the one hand, relieves the drainage pressure during the flood season, and on the other hand, the multi-stage purified rainwater can be directly used for road and greening spraying, etc., saving water resources and improving water resource utilization.

[0004] In the above application, the rammed earth layer has a low water permeability, which will result in a large amount of rainwater being unable to penetrate downward quickly, thus forming puddles in low-lying areas. There is no anti-landslide engineering design at the slope of the soil layer, and landslides may occur when the soil moisture content is high. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a multi-stage water storage sponge facility, which aims to improve the problem that rainwater cannot penetrate downward quickly due to the low water permeability of the compacted soil layer and there is no landslide prevention and control.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage water storage sponge facility, comprising a fluffy soil layer containing perlite, a permeable geotextile is contacted and connected to the lower side of the fluffy soil layer containing perlite, a crushed stone layer is contacted and connected to the lower side of the permeable geotextile, a coarse sand layer is contacted and connected to the lower side of the crushed stone layer, a lower layer of the coarse sand layer is contacted and connected to an anti-seepage geotextile, a drainage pipe is fixedly connected to the lower side of the anti-seepage geotextile, a drainage trough is provided in the middle of the drainage pipe, an overflow well is installed at one end of the drainage pipe, an overflow pipe is installed at the upper end of the overflow well, a drainage outlet is provided at the lower end of the overflow well, a retaining wall is provided on one side of the fluffy soil layer containing perlite, and a reinforcement component is provided on the upper side of the drainage pipe.

[0007] Preferably, the reinforcement assembly includes an anchor, one end of which is fixedly connected to the upper side of the anti-seepage geotextile, and a steel wire rope is fixedly connected to the rear side of the anchor.

[0008] Preferably, anti-slip piles are arranged in the middle of the perlite-containing fluffy soil layer.

[0009] Preferably, a column is installed on the front upper side of the retaining wall, and guardrails are installed on both sides of the column.

[0010] Preferably, connecting plates are fixedly connected to the left and right sides of the anchor, and one end of the steel wire rope is wound around and connected to a fixing ring.

[0011] Preferably, a gravel path is provided on the upper side of the retaining wall.

[0012] Preferably, the anti-slip pile comprises a pressure cap, a pile hole is provided in the middle of the pressure cap, a hollow column is fixedly connected to the lower side of the pressure cap, and a V-shaped groove is provided in the middle of the hollow column.

[0013] Preferably, a breaking cone is fixedly connected to one end of the hollow column, and a conical hole is formed on the outer side of the breaking cone.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the fluffy soil layer containing perlite, the permeable geotextile, the crushed stone layer, the coarse sand layer, the anti-seepage geotextile have good water permeability and the drainage pipes, drainage grooves, overflow wells, overflow pipes and drainage outlets play the effect of guiding the flow of water to achieve the effect of rapid infiltration of rainwater into reservoirs or rivers and lakes.

[0016] 2. In the utility model, the anti-slide piles, retaining walls and anchors are used to achieve the effect of balancing the mechanical structure of the soil layer and the slope soil therein, thereby achieving the effect of reinforcing and stabilizing the soil layer.

[0017] 3. In the utility model, the anti-slip piles are used to assist rainwater to flow to the drainage pipes through the pile holes, hollow columns and V-shaped grooves, thereby preventing water accumulation in the surface soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a multi-stage water storage sponge facility proposed by the utility model;

[0019] Figure 2 A top view of a multi-stage water storage sponge facility proposed by the utility model;

[0020] Figure 3 This is a front view of an anchor member of a multi-stage water storage sponge facility proposed by the utility model;

[0021] Figure 4 A three-dimensional diagram of an anti-slip pile of a multi-level water storage sponge facility proposed by the utility model;

[0022] Figure 5 for Figure 1 A magnified image of point A;

[0023] Figure 6 for Figure 4 The enlarged view of point B;

[0024] Figure 7 A stereoscopic diagram of a drainage pipe of a multi-stage water storage sponge facility proposed by the utility model.

[0025] Legend:

[0026] 1. Fluffy soil layer containing perlite; 2. Permeable geotextile; 3. Gravel layer; 4. Coarse sand layer; 5. Anti-seepage geotextile; 6. Drainage pipe; 7. Anti-slip pile; 8. Anchor; 9. Retaining wall; 10. Column; 11. Overflow well; 12. Overflow pipe; 13. Drainage outlet; 14. Gravel path; 15. Guardrail; 16. Connecting plate; 17. Pile hole; 18. Pressure cap; 19. V-shaped groove; 20. Hollow column; 21. Fixing ring; 22. Wire rope; 23. Ground-breaking cone; 24. Conical hole; 25. Drainage trough. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1 , Figure 2 and Figure 7The utility model provides an embodiment: a multi-stage water storage sponge facility, including a fluffy soil layer 1 containing perlite, a permeable geotextile 2 is contacted and connected to the lower side of the fluffy soil layer 1 containing perlite, a crushed stone layer 3 is contacted and connected to the lower side of the permeable geotextile 2, a coarse sand layer 4 is contacted and connected to the lower side of the crushed stone layer 3, a lower layer of the coarse sand layer 4 is contacted and connected to an anti-seepage geotextile 5, a drainage pipe 6 is fixedly connected to the lower side of the anti-seepage geotextile 5, a drainage ditch 25 is opened in the middle of the drainage pipe 6, an overflow well 11 is installed at one end of the drainage pipe 6, an overflow pipe 12 is installed at the upper end of the overflow well 11, a drainage outlet 13 is opened at the lower end of the overflow well 11, a retaining wall 9 is arranged on one side of the fluffy soil layer 1 containing perlite, and a reinforcement component is arranged on the upper side of the drainage pipe 6.

[0029] Specifically, the above-mentioned perlite-containing fluffy soil layer 1 is ordinary soil with a small amount of perlite added, wherein the perlite plays the role of soil transformation, regulating soil compaction, and preventing plant lodging. The perlite-containing fluffy soil layer 1 can be used to plant green plants and absorb rainwater. The above-mentioned permeable geotextile 2 plays the role of preventing the soil in the perlite-containing fluffy soil layer 1 from entering the lower layer while allowing water to pass through. The above-mentioned gravel layer 3 plays the role of improving permeability and supporting the upper soil layer. The above-mentioned coarse sand layer 4 plays the role of improving permeability and supporting the upper soil layer. The above-mentioned drainage pipe 6 and drainage trough 25 play the role of guiding the seepage water to flow out in a fixed direction. The above-mentioned overflow well 11 plays the role of balancing the pressure in the pipe and making the water flow out more smoothly. The above-mentioned overflow pipe 12 plays the role of preventing the drainage outlet 13 from being blocked due to excessive water flow. The above-mentioned retaining wall 9 plays the role of bearing the horizontal pressure of the soil layer.

[0030] Reference Figure 1 and Figure 5 The reinforcement assembly includes an anchor 8, one end of which is fixedly connected to the upper side of the anti-seepage geotextile 5, a steel wire rope 22 is fixedly connected to the rear side of the anchor 8, connecting plates 16 are fixedly connected to the left and right sides of the anchor 8, and one end of the steel wire rope 22 is wound around and connected to a fixing ring 21.

[0031] Specifically, the anchor 8 has the effect of bearing the horizontal pressure of part of the soil layer, and the steel wire rope 22 and the fixing ring 21 have the effect of stabilizing the anchor 8 .

[0032] Reference Figure 1 and Figure 2 A column 10 is installed on the front of the upper side of the retaining wall 9, and guardrails 15 are installed on both sides of the column 10. A gravel path 14 is set on the upper side of the retaining wall 9, and an anti-slip pile 7 is set in the middle of the fluffy soil layer 1 containing perlite.

[0033] Specifically, the columns 10 and the guardrails 15 prevent pedestrians from accidentally falling, the gravel path 14 adds humanistic care, and the anti-slip piles 7 reinforce the slope.

[0034] Reference Figure 4 The anti-sliding pile 7 includes a pressure cap 18 , a pile hole 17 is provided in the middle of the pressure cap 18 , a hollow column 20 is fixedly connected to the lower side of the pressure cap 18 , and a V-shaped groove 19 is provided in the middle of the hollow column 20 .

[0035] Specifically, the pressure cap 18 facilitates the installation of the anti-slip pile 7, the pile hole 17 connects the internal space of the anti-slip pile 7 with the external space, the hollow column 20 is the main body of the anti-slip pile 7, and the V-shaped groove 19 allows water in the soil to flow into the hollow column 20 more conveniently.

[0036] Reference Figure 6 A soil-breaking cone 23 is fixedly connected to one end of the hollow column 20 , and a tapered hole 24 is formed on the outer side of the soil-breaking cone 23 .

[0037] Specifically, the soil-breaking cone 23 facilitates the installation of the anti-slip pile 7, and the cone hole 24 facilitates the water source flowing into the hollow column 20 to flow to the lower soil.

[0038] Working principle: On rainy days, rainwater will first fall on the green plants on the fluffy soil layer 1 containing perlite, and then fall on the fluffy soil layer 1 containing perlite. The perlite in the fluffy soil layer 1 containing perlite prevents the soil from becoming compacted, and the uncompacted soil has better water permeability. The rainwater seeps down along the fluffy soil layer 1 containing perlite, passes through the permeable geotextile 2, the gravel layer 3, the coarse sand layer 4 and the anti-seepage geotextile 5, and flows into the drainage trough 25 in the drainage pipe 6, flows along the drainage trough 25 to the overflow well 11, and flows to the reservoir or river or lake through the drainage outlet 13 in the overflow well 11.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage water storage sponge facility, comprising a fluffy soil layer containing perlite (1), characterized in that: The perlite-containing fluffy soil layer (1) is in contact with a permeable geotextile (2) at its lower side, the permeable geotextile (2) is in contact with a crushed stone layer (3) at its lower side, the crushed stone layer (3) is in contact with a coarse sand layer (4) at its lower side, the coarse sand layer (4) is in contact with an anti-seepage geotextile (5) at its lower side, a drainage pipe (6) is fixedly connected to the lower side of the anti-seepage geotextile (5), a drainage ditch (25) is provided in the middle of the drainage pipe (6), an overflow well (11) is installed at one end of the drainage pipe (6), an overflow pipe (12) is installed at the upper end of the overflow well (11), and a drainage outlet (13) is provided at the lower end of the overflow well (11), a retaining wall (9) is provided at one side of the perlite-containing fluffy soil layer (1), and a reinforcement component is provided at the upper side of the drainage pipe (6).

2. A multi-stage water storage sponge facility according to claim 1, characterized in that: The reinforcement assembly comprises an anchor (8), one end of which is fixedly connected to the upper side of the anti-seepage geotextile (5), and a steel wire rope (22) is fixedly connected to the rear side of the anchor (8).

3. The multi-stage water storage sponge facility according to claim 1, characterized in that: An anti-sliding pile (7) is arranged in the middle of the perlite-containing fluffy soil layer (1).

4. The multi-stage water storage sponge facility according to claim 1, characterized in that: A column (10) is installed at the front portion of the upper side of the retaining wall (9), and guardrails (15) are installed on both sides of the column (10).

5. The multi-stage water storage sponge facility according to claim 2, characterized in that: The left and right sides of the anchor (8) are fixedly connected with connecting plates (16), and one end of the steel wire rope (22) is wound around and connected with a fixing ring (21).

6. The multi-stage water storage sponge facility according to claim 1, characterized in that: A gravel path (14) is provided on the upper side of the retaining wall (9).

7. The multi-stage water storage sponge facility according to claim 3, characterized in that: The anti-sliding pile (7) comprises a pressure cap (18), a pile hole (17) is provided in the middle of the pressure cap (18), a hollow column (20) is fixedly connected to the lower side of the pressure cap (18), and a V-shaped groove (19) is provided in the middle of the hollow column (20).

8. The multi-stage water storage sponge facility according to claim 7, characterized in that: A soil-breaking cone (23) is fixedly connected to one end of the hollow column (20), and a cone hole (24) is formed on the outer side of the soil-breaking cone (23).

Images