Bioretention facility combined with pedestrian tree pool

Abstract

The utility model relates to the technical field of urban drainage and sponge city construction, and discloses a bioretention facility combined with a pedestrian road tree pool, which comprises a sidewalk pavement, a plurality of pavement sponge mechanisms, bioretention ponds and a tree pool for planting trees, road rainwater is effectively collected, and the road rainwater rapidly enters a sidewalk sponge facility through a curbstone opening and is fully regulated and stored; facilities and landscapes are coordinated and fused, and a steel grating structure and hard pavement are integrally coordinated; sidewalk blind pipe rainwater is effectively collected, specifically, the sidewalk blind pipe is connected to a sponge facility stagnant water layer, and sufficient collection and purification are achieved; the rainwater in the sponge facility is used for supplementing water to the tree pool under the action of a blind pipe and a reverse osmosis layer, and the redundant rainwater is emptied to a facility drainage pipe; the movable grid facilitates regular cleaning and maintenance of sponge facilities, and ensures long-term effective operation of the system.

Description

TECHNICAL FIELD

[0001] The utility model relates to city drainage and sponge city construction technical field, concretely is a kind of biological retention facilities combined with sidewalk tree pool. BACKGROUND

[0002] City drainage system is the engineering facility system of processing and excluding city sewage and rainwater, and is the component part of city public facilities. Sponge city construction is through comprehensive measures, protection and utilization of city natural mountain, river and lake wetland, farmland, woodland, grassland and other ecological spaces, to play the absorption and slow-release effect of building, road, green land, water system on rainwater, to improve the water storage, water infiltration and water conservation capacity of city, to realize the natural accumulation, natural infiltration and natural purification of water, to promote the formation of ecological, safe and sustainable urban water circulation system.

[0003] Through search, the patent with application No. CN202311482610.5 discloses a rainwater drainage system of a municipal road in a reclamation area, based on a municipal road adjacent to residential or commercial land on both sides, including a motor vehicle lane, a motor-non-motor isolation green belt, a non-motor vehicle lane, an ecological tree pool, a sidewalk, a green belt and a biological retention belt arranged in mirror image and connected from the center of the road to the residential or commercial land. The motor-non-motor isolation green belt is provided below with a pre-sedimentation facility extending underground. The pre-sedimentation facility and both sides of the ecological tree pool are provided with open kerbs along the length direction of the municipal road. The invention can consider the properties of surrounding plots, make overall plans and adapt to local conditions, collect and purify rainwater in the road and green area without affecting the normal use of the municipal road, greatly improve the construction standard of sponge city, and are beneficial to the construction of sponge city in the reclamation area.

[0004] The current sponge method for sidewalk is mainly in the form of water-permeable pavement or setting a water storage tank at the bottom of the sidewalk, which has the problems of being unable to effectively collect and purify rainwater, being difficult to maintain, and being difficult to fully play the sponge function. Specifically, there are the following defects:

[0005] 1. The sidewalk is mainly hard, and conventional green sponge facilities cannot be effectively set;

[0006] 2. The width of the sidewalk is limited, and the setting of sponge facilities affects the normal passing function;

[0007] 3. Road rainwater is quickly discharged into the municipal pipe network and cannot be effectively collected and purified;

[0008] 4. The green sponge facility is difficult to coordinate with the landscape style of the sidewalk;

[0009] 5. The method of setting a water storage tank at the bottom requires high overall strength of the sidewalk, and is difficult to maintain later;

[0010] Therefore, we need to propose a kind of biological retention facilities combined with sidewalk tree pool, for effectively managing and discharging rainwater when raining, while combined with sidewalk tree pool, ensuring landscape effect, realizing the function of sponge. Utility model content

[0011] The utility model discloses a kind of biological retention facilities combined with sidewalk tree pool, effectively gather road rainwater: road rainwater is quickly entered into sidewalk sponge facility inside by curb opening, is fully regulated and stored;Facility is coordinated and fused with landscape, steel grating structure is integrally coordinated with hard pavement;Effectively collect sidewalk blind pipe rainwater: sidewalk blind pipe is connected to sponge facility water-retarding layer, is fully collected and purified;For tree pool water replenishment: by blind pipe, reverse osmosis layer effect, rainwater in sponge facility is utilized for tree pool water replenishment, excess rainwater is emptied to facility drain pipe;Movable grid, facilitate regularly cleaning and maintenance sponge facility, ensure that system long-term effective operation, to solve the problem proposed in the above background art.

[0012] To achieve the above object, the utility model provides the following technical scheme: a kind of biological retention facilities combined with sidewalk tree pool, including sidewalk pavement, multiple pavement sponge mechanism, multiple the pavement sponge mechanism between being provided with the biological retention pool of position adjacent arrangement, for planting trees tree pool, the side of sidewalk pavement is opened with the curb opening being communicated with biological retention pool, the top of the biological retention pool and tree pool is all provided with steel grating, which is set on sidewalk pavement and is flush with sidewalk pavement;

[0013] The inside of the biological retention pool is provided with a well body for collecting rainwater, and the inside of the biological retention pool is further provided with a filling layer for fastening the well body.

[0014] The inside of the tree pool is provided with a filtering mechanism for filtering rainwater.

[0015] Preferably, the bottom of the sidewalk pavement is provided with a sidewalk blind pipe penetrating the pavement sponge mechanism, and one end of the sidewalk blind pipe is communicated with the biological retention pool.

[0016] Preferably, the filling layer comprises an impermeable geomembrane, a second gravel layer, a first gravel layer and a replacement soil layer, which are sequentially laid from bottom to top, the inside of the biological retention pool is further provided with a first drainage blind pipe penetrating the replacement soil layer, the first gravel layer and the second gravel layer in sequence and communicated with the well body, and the top of the first drainage blind pipe is provided with an observation port facilitating the penetration of water level.

[0017] Preferably, the base layer comprises a plain soil tamping layer, a thick gravel cushion layer and a plain concrete cushion layer, which are sequentially laid from bottom to top.

[0018] Preferably, the lower end of the outer wall of the well body is connected with a rainwater connection well, and the top of the well body is provided with a well lid support brick, and an overflow well is installed on the well lid support brick.

[0019] Preferably, the inside of the tree pool is provided with a planting soil layer for planting trees, the filtering mechanism comprises a gravel inverse filter layer installed in the inside of the planting soil layer, and the inside of the gravel inverse filter layer is inserted with a filter water blind pipe penetrating through the pavement sponge mechanism and communicating with the biological retention pool.

[0020] Preferably, the steel grating is provided with a backwashing opening for regularly cleaning the pavement sponge mechanism.

[0021] Compared with the prior art, the utility model has the advantages that:

[0022] 1. The utility model effectively collects road rainwater: road rainwater quickly enters the sidewalk sponge facility through the curb opening, is fully stored, and the facility is coordinated and integrated with the landscape, the steel grating structure is coordinated with the hard pavement as a whole, and sidewalk blind pipe rainwater is effectively collected:

[0023] 2. The sidewalk blind pipe is connected to the sponge facility water retention layer, is fully collected and purified, and is used for tree pool water replenishment: through the blind pipe and the reverse infiltration layer, the rainwater in the sponge facility is used for tree pool water replenishment, and the excess rainwater is emptied to the facility drain pipe; the movable grating facilitates regular cleaning and maintenance of the sponge facility, and ensures long-term effective operation of the system. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is a sectional view of the front of the utility model;

[0025] Fig. 2 It is a sectional view of the side of the utility model;

[0026] Fig. 3 It is a plan view of the utility model.

[0027] In the drawing: 1, sidewalk pavement; 2, steel grating; 3, biological retention pool; 4, well body; 6, well lid support brick; 7, overflow well; 8, rainwater connection well; 9, sidewalk blind pipe; 10, replacement soil layer; 11, first gravel layer; 12, second gravel layer; 13, first drain blind pipe; 14, impermeable geomembrane; 15, observation opening; 16, tree pool; 17, planting soil layer; 18, gravel inverse filter layer; 19, filter water blind pipe; 20, pavement sponge mechanism; 22, base layer; 221, plain concrete cushion layer; 222, thick gravel cushion layer; 223, plain soil tamping layer; 23, curb opening; 24, backwashing opening. DETAILED DESCRIPTION

[0028] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present utility model.

[0029] Please refer to Figs. 1-3 The present utility model provides a technical scheme: a kind of biological retention facility combined with sidewalk tree pool, including sidewalk paving 1, multiple paving sponge mechanism 20, paving sponge mechanism 20 is used to filter rainwater, multiple paving sponge mechanism 20 between being provided with the biological retention pool 3 of adjacent position setting, for planting trees tree pool 16, the side of sidewalk paving 1 is provided with the side stone opening 23 being communicated with biological retention pool 3, side stone opening 23 facilitates road rainwater quickly converging into paving sponge mechanism 20, the top of biological retention pool 3 and tree pool 16 is all provided with the steel grating 2 being set on sidewalk paving 1 and being flush with sidewalk paving 1, steel grating 2 is set as movable grating, it is convenient to regularly clean and maintain paving sponge mechanism 20, ensure that system long-term effective operation, the size of steel grating 2 is 38mm*38mm*30mm;Steel grating 2 must guarantee the strength requirement that can be passed by person, bearing capacity is not less than 300kg, and is overall coordinated with the hard sidewalk paving 1.

[0030] The length of paving sponge mechanism 20 is 3000mm, the width is 1680mm, and the thickness is 240mm.

[0031] The inside of biological retention pool 3 is provided with well body 4 for collecting rainwater, the inner diameter of well body 4 is 500mm, well body 4 is set as resin concrete well body, and the ring stiffness thereof is 8KN.

[0032] The inside of tree pool 16 is provided with filter mechanism for filtering rainwater, and the filter mechanism is arranged in two layers. Rainwater in the biological retention pool 3 is filtered by the gravel inverse filter layer 18 and the blind filter pipe 19 in the upper filter mechanism, rainwater in the paving sponge mechanism 20 is used to supplement water in the tree pool 16, and excess rainwater is discharged to the facility drain pipe through the lower filter mechanism.

[0033] The lower part of the sidewalk paving 1 is provided with a sidewalk blind pipe 9 penetrating through the paving sponge mechanism 20, the inner diameter of the sidewalk blind pipe 9 is 110mm, one end of the sidewalk blind pipe 9 is communicated with the biological retention pool 3, and the sidewalk blind pipe 9 can quickly collect rainwater and discharge the rainwater to the biological retention pool 3.

[0034] The filling layer comprises, from bottom to top, a second gravel layer 12, a first gravel layer 11, a replacement soil layer 10 and a waterproof membrane 14, the waterproof membrane 14 is an HDPE (600g two cloth one membrane) waterproof membrane, the thickness of the replacement soil layer 10 is 500mm, the inside of the bioretention pool 3 is further provided with a first drainage blind pipe 13 penetrating through the replacement soil layer 10, the first gravel layer 11 and the second gravel layer 12 in sequence and communicating with the well body 4, the first drainage blind pipe 13 is a PVC drainage blind pipe with an inner diameter of 100mm, the top of the first drainage blind pipe 13 is provided with an observation port 15 for facilitating the observation of the water level, and the height of the top of the first drainage blind pipe 13 is greater than the height of the overflow well 7.

[0035] The thickness of the first gravel layer 11 is 100mm, and the thickness of the second gravel layer 12 is 250mm.

[0036] The base layer 22 comprises, from bottom to top, a plain soil tamping layer 223, a thick gravel cushion layer 222 and a plain concrete cushion layer 221, the compaction coefficient of the plain soil tamping layer 223 is greater than 0.95, the thickness of the thick gravel cushion layer 222 is 200mm, and the plain concrete cushion layer 221 is a C20 plain concrete cushion layer with a thickness of 100mm.

[0037] The lower end of the outer wall of the well body 4 is connected with a rainwater inspection well 8, the inner diameter of the rainwater inspection well 8 is 300mm, the top of the well body 4 is provided with a well lid support brick 6, the well lid support brick 6 is installed with an overflow well 7, and the overflow well 7 is responsible for discharging excess rainwater in the retention facility.

[0038] The inside of the tree pool 16 is provided with a planting soil layer 17 for planting trees, and the filtering mechanism comprises a gravel inverse filter layer 18 installed in the inside of the planting soil layer 17, the inside of the gravel inverse filter layer 18 is inserted with a filter blind pipe 19 penetrating through the paving sponge mechanism 20 and communicating with the bioretention pool 3, and the inner diameter of the filter blind pipe 19 is 50mm.

[0039] The gravel inverse filter layer 18 controls the one-way penetration of water by the combination of gravel and geotextile.

[0040] The steel grating 2 is provided with a backwashing port 24 for periodically cleaning the paving sponge mechanism 20, so as to prevent the paving sponge mechanism 20 from being blocked and contaminated.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A bioretention facility combined with a sidewalk tree pool, comprising a sidewalk pavement (1), a plurality of pavement sponge mechanisms (20), characterized in that: A bioretention pool (3) and a tree pool (16) for planting trees are provided between the plurality of pavement sponge mechanisms (20), and the side of the sidewalk pavement (1) is provided with a curb opening (23) connected to the bioretention pool (3). The tops of the bioretention pool (3) and the tree pool (16) are both provided with a steel grille (2) that is erected on the sidewalk pavement (1) and flush with the sidewalk pavement (1); A well body (4) for collecting rainwater is provided inside the bioretention pond (3), a filling layer for fastening the well body (4) is also provided inside the bioretention pond (3), and a base layer (22) for supporting the well body (4) is provided at the bottom of the well body (4); A filtering mechanism for filtering rainwater is installed inside the tree pool (16).

2. The bioretention facility combined with a sidewalk tree pool according to claim 1, characterized in that: A sidewalk blind pipe (9) penetrating the sidewalk sponge mechanism (20) is provided below the sidewalk pavement (1), and one end of the sidewalk blind pipe (9) is connected to the bioretention tank (3).

3. The bioretention facility combined with a sidewalk tree pool according to claim 1, characterized in that: The filling layer comprises an impermeable geomembrane (14), a second crushed stone layer (12), a first crushed stone layer (11), and a replacement soil layer (10) laid in sequence from bottom to top. The interior of the bioretention pond (3) is further provided with a first drainage blind pipe (13) which passes through the replacement soil layer (10), the first crushed stone layer (11), and the second crushed stone layer (12) in sequence and is connected to the well body (4). The top of the first drainage blind pipe (13) is provided with an observation port (15) which is convenient for passing through the water level.

4. The bioretention facility combined with a sidewalk tree pool according to claim 1, characterized in that: The base layer (22) comprises a plain soil rammed layer (223), a thick crushed stone cushion layer (222), and a plain concrete cushion layer (221) which are laid sequentially from bottom to top.

5. The bioretention facility combined with a sidewalk tree pool according to claim 1, characterized in that: The lower end of the outer wall of the well body (4) is connected to a rainwater inspection well (8), and the top of the well body (4) is provided with a well cover support brickwork (6), and an overflow well (7) is installed on the well cover support brickwork (6).

6. The bioretention facility combined with a sidewalk tree pool according to claim 1, characterized in that: A planting soil layer (17) for planting trees is provided inside the tree pit (16), and the filtering mechanism includes a crushed stone filter layer (18) installed inside the planting soil layer (17), and a water filtration blind pipe (19) is inserted into the crushed stone filter layer (18) and penetrates the paving sponge mechanism (20) and is connected to the biological retention tank (3).

7. The bioretention facility combined with a sidewalk tree pool according to claim 1, characterized in that: The steel grid (2) is provided with a backwash port (24) for regularly cleaning the paving sponge mechanism (20).

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