CN213978429U - Water permeable ground for sponge urban ecological system - Google Patents

Abstract

The utility model discloses a permeable ground used in a sponge urban ecosystem, which comprises a water guide layer, a rock-soil layer, a quartz sand layer, a matrix layer and a vegetable layer from the ground base layer upwards in sequence; in the direction perpendicular to the foundation, the permeable ground for the sponge urban ecosystem is sequentially and tightly arranged by taking a columnar structure with a regular hexagonal section as a periodic structure, and mutual water exchange and flow are realized between the adjacent periodic structures; the periodic structure comprises a solid structure filled with real objects and a water storage well not filled with the real objects, and the solid structure and the water storage well are arranged at intervals. The utility model discloses an aspect adopts the stacked structure of water guide layer, ground layer, quartz sand layer, matrix layer and vegetable layer, and on the other hand adopts the mode of interval arrangement between solid construction and the retaining well, and both cooperations make holding, infiltration rainwater ability on pavement and district road show the reinforcing, and the development demand in sponge city has been accorded with in time discharging of rainwater when also having used big rainfall.

Description

Water permeable ground for sponge urban ecological system

Technical Field

The utility model relates to a road surface rainwater drainage retaining technical field, especially a ground that permeates water for among sponge city ecosystem.

Background

The sponge city is an urban development mode which fully exerts the functions of absorption, storage, permeation and slow release of rainwater by building, road, greenbelt, water system and other ecological systems by strengthening urban planning construction management, effectively controls rainwater runoff, and realizes natural accumulation, natural permeation and natural purification. The sponge city can maximally realize the storage, permeation and purification of rainwater in the urban area on the premise of ensuring the safety of urban drainage and waterlogging prevention, and promotes the utilization of rainwater resources and the ecological environment protection.

At present traditional city construction mode, everywhere is the sclerosis road surface, and every time heavy rain, facilities such as mainly rely on canals and canals, pump station come the drainage to the square needle of quick concentrated drainage sets up, and the rainwater is mainly drained away through drainage facility, can't permeate the underground, produces the rainwater easily when displacement increase and is difficult to in time discharge and takes place the condition of large surface ponding, and this kind of traditional design mode is far away with the requirement of present sponge city construction. Especially for sidewalks and residential roads, the prior art is usually made of hard and water-seepage-free materials, which not only has no function of storing and permeating rainwater, but also is easy to generate large-area water accumulation when facing large rainfall, which brings inconvenience to people's travel life, so a new water-permeable ground structure needs to be provided to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ground of permeating water for among sponge city ecosystem for solve among the prior art pedestrian's way and district road hold, the effect of infiltration rainwater is poor, the problem of easy ponding of taking place when the precipitation is big.

In order to solve the technical problem, the utility model provides a permeable ground used in a sponge urban ecosystem, which comprises a water guide layer, a rock-soil layer, a quartz sand layer, a matrix layer and a vegetable layer from the ground base layer upwards in sequence; in the direction vertical to the foundation, the permeable ground used in the sponge urban ecosystem is sequentially and tightly arranged by taking a columnar structure with a regular hexagonal section as a periodic structure, one side surface between adjacent periodic structures is mutually abutted, and mutual water exchange and flow are realized; the periodic structure comprises a solid structure filled with real objects and a water storage well not filled with the real objects, and the solid structure and the water storage well are arranged at intervals.

Wherein, still be provided with the water-permeable partition between the adjacent periodic structure, the water-permeable partition is perpendicular to water guide setting.

The rock-soil layer area is provided with a plurality of permeable partition plates, and the permeable partition plates are arranged in an array mode and communicated with adjacent periodic structures; the water-permeable partition plates positioned in the quartz sand layer, the substrate layer and the vegetation layer area are of a water-impermeable solid structure.

Preferably, the water permeable partition is an ultra-high molecular weight polyethylene sheet.

The water guide layer comprises a pipeline network and anti-seepage filler, the pipeline network is formed by longitudinally and transversely communicating a plurality of pipelines, the pipeline network is communicated with the water storage well, and the anti-seepage filler is filled in gaps of the pipeline network.

Preferably, the impermeable filler is a mixture of foam plastic and fly ash light soil.

Preferably, the geotechnical layer is volcanic rock.

The utility model has the advantages that: be different from prior art's condition, the utility model provides a ground of permeating water for among sponge city ecosystem, adopted water guide layer, ground layer on the one hand, the range upon range of formula structure of quartz sand layer, matrix layer and vegetable layer, on the other hand adopts the mode of interval arrangement between solid construction and the retaining well, both cooperate and make holding of pavement and district road, infiltration rainwater ability is showing the reinforcing, also in time discharging of rainwater when having the big rainfall of utilization simultaneously, sponge city's development demand has been accorded with.

Drawings

FIG. 1 is a top view of an embodiment of a permeable ground for use in a sponge urban ecosystem of the present invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

FIG. 3 is a schematic structural view of a permeable partition of an embodiment of the permeable ground used in the ecological system of the sponge city;

in the figure: 1: a ground layer; 2: a water guide layer; 3: a rock-soil layer; 4: a quartz sand layer; 5: a substrate layer; 6: a vegetable layer; 7: a periodic structure; 71: a solid structure; 72: a water storage well; 8: a water permeable barrier; 81: and (7) water permeable through holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Referring to fig. 1-2, fig. 1 is a top view structural diagram of an embodiment of a permeable ground for a sponge urban ecosystem of the present invention, and fig. 2 is a sectional view along a-a direction in fig. 1. The permeable ground used in the sponge city ecosystem of the utility model sequentially comprises a water conducting layer 2, a rock-soil layer 3, a quartz sand layer 4, a matrix layer 5 and a vegetable layer 6 from a foundation layer 1 to the top; in the direction vertical to the foundation, the permeable ground is sequentially and tightly arranged by taking the columnar structure with the regular hexagonal section as the periodic structure 7, one side surface between the adjacent periodic structures is mutually abutted, and certain water exchange and flow are kept; wherein, periodic structure 7 is including being filled with solid construction 71 of real object and not filling the water storage well 72 of real object, and arranges at interval between solid construction 71 and the water storage well 72, has promoted this permeable ground's the ability of holding, permeating the rainwater through the mode that this kind of interval set up water storage well 72. The characteristics and material selection of the above-described structures of the permeable ground for use in the sponge urban ecosystem are described below, respectively.

Specifically, a water-permeable partition plate 8 is further arranged between the adjacent periodic structures 7, and the water-permeable partition plate 8 is arranged upwards perpendicular to the water guide layer 2. In the embodiment, a plurality of water permeable through holes 81 are arranged on the water permeable partition plate 8 positioned in the rock-soil layer 3 area, and the water permeable through holes 81 are arranged in an array mode and are communicated with the adjacent periodic structures 7; the water-permeable partition 8 positioned in the areas of the quartz sand layer 4, the substrate layer 5 and the vegetation layer 6 is a water-impermeable solid structure; the material selection for the water-permeable partition plate is preferably an ultra-high molecular weight polyethylene plate, which enables the water-permeable partition plate 8 to have good toughness, low-temperature impact resistance, chemical corrosion resistance, and stress cracking resistance. Because this permeable ground uses the columnar structure of regular hexagon cross-section to closely arrange in proper order as periodic structure 7, then the baffle 8 that permeates water that is located between adjacent periodic structure 7 then can form the hexagonal periodic arrangement structure of honeycomb, and this kind of honeycomb has excellent mechanical properties to permeate water baffle 8 and provide good supporting role as skeleton texture, and cooperate the exchange of water through-hole 81 realization moisture between the adjacent periodic structure 7, make the moisture configuration in each periodic structure 7 balanced.

Specifically, the water guide layer 2 comprises a pipeline network and anti-seepage filler, the pipeline network is formed by longitudinally and transversely communicating a plurality of pipelines, the pipeline network is communicated with the water storage well 72, and the anti-seepage filler is filled in the gap of the pipeline network; in the present embodiment, the preferred impermeable filler is a mixture of foam plastic and fly ash light soil, so as to prevent rainwater from penetrating into the ground base layer 1 in a large amount. Because the pipe network all communicates with retaining well 72, can be fast with the rainwater that retaining well 72 was held and send away, and the rainwater of sending away can be through purification treatment after reuse, its utilization form is various, does not do not describe here in detail.

In the embodiment, the rock-soil layer 3 is preferably volcanic rock-soil, which is one of the commonly used biological filter materials, and because the volcanic rock-soil has the characteristic of rough and microporous surface, microorganisms can grow and reproduce at the surface micropores and form a biological membrane; under the auxiliary action of the carrier of the biological membrane, the volcanic rock-soil filter material can not influence the activity of microorganisms, and can effectively remove substances such as ammonia nitrogen, BOC and the like, thereby achieving good water quality purification effect; in addition, above-mentioned baffle 8 that permeates water only sets up a plurality of through-holes 81 that permeate water in ground layer 3 region, also is in order to carry out the moisture exchange with adjacent periodic structure 7 again after the purification effect of rainwater process ground layer 3, has guaranteed the purity degree of rainwater among the moisture exchange process, also does benefit to subsequent rainwater and retrieves.

In the embodiment, the particle size of the quartz sand particles in the quartz sand layer 4 is preferably 200-300 mm; the substrate layer 5 can be selected from organic fertilizer, peat, soil and other components which can meet the normal growth of plants; the vegetation layer 6 is mainly green plants, and the vegetation layer 6 can be selectively arranged according to different scenes, for example, in the application scene of a sidewalk, the vegetation layer 6 can be not arranged or less arranged in the area frequently passed by pedestrians, and the preparation layer 6 is more arranged in the area less passed by pedestrians, so that rainwater can be absorbed and stored conveniently; similar arrangements may be used in other scenarios, and are not illustrated here.

Further, based on the above structural features of the permeable ground for the sponge urban ecosystem, the practical application thereof will be described in detail. In the present embodiment, regarding the arrangement of the solid structures 71 and the water storage wells 72 in the periodic structure 7, when every seven periodic structures 7 which are closely arranged and have a similar hexagonal shape are viewed, two arrangement modes are included, wherein one mode is a mode in which six solid structures 71 surround and surround a hollow water storage well 72, and the other mode is a mode in which four solid structures 71 and three water storage wells 72 are included, and three water storage wells 72 are distributed on three sides of a hexagon at intervals; in other embodiments, the spacing arrangement of the solid structure 71 and the water storage well 72 may be adaptively adjusted according to actual requirements, which is not limited herein.

When a large amount of rainwater falls, the rainwater firstly falls on the vegetation layer 6 and is absorbed by the vegetation layer 6, then the rainwater passes through the substrate layer 5 downwards and is primarily filtered at the quartz sand layer 4, then the rainwater is doped into the rock-soil layer 3 downwards for secondary purification, and the purified rainwater is transmitted to the adjacent solid structure 71 or water storage well 72 through the water permeable through hole 81; the purified rainwater transferred into the water storage well 72 is quickly led out through the pipeline network in the water guide layer 2 for subsequent treatment and recycling, and meanwhile, the seepage-proofing filler in the water guide layer 2 can prevent the rainwater from permeating into the ground base layer 1; the effect of moisture equalization is achieved for the purified rainwater that is transferred to the adjacent solid structure 71. And when the rainwater descends a little or does not fall, the pipeline network in the water guide layer 2 can be prevented from leading out the rainwater, and at the moment, the solid structure 71 and the water storage well 72 can store water.

Be different from prior art's condition, the utility model provides a ground of permeating water for among sponge city ecosystem, adopted water guide layer, ground layer on the one hand, the range upon range of formula structure of quartz sand layer, matrix layer and vegetable layer, on the other hand adopts the mode of interval arrangement between solid construction and the retaining well, both cooperate and make holding of pavement and district road, infiltration rainwater ability is showing the reinforcing, also in time discharging of rainwater when having the big rainfall of utilization simultaneously, sponge city's development demand has been accorded with.

It should be noted that the above embodiments belong to the same utility model concept, and the description of each embodiment has its emphasis, and the description of each embodiment is not described in detail, and reference may be made to the description of other embodiments.

The above-mentioned embodiments only express the embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (6)

1. A permeable ground for a sponge urban ecosystem is characterized by sequentially comprising a water guide layer, a rock-soil layer, a quartz sand layer, a matrix layer and a vegetable layer from a ground base layer to the top;

in the direction perpendicular to the foundation, the permeable ground for the sponge urban ecosystem is sequentially and tightly arranged by taking a columnar structure with a regular hexagonal section as a periodic structure, one side surface between every two adjacent periodic structures is mutually abutted, and mutual moisture exchange and flow are realized;

the periodic structure comprises a solid structure filled with real objects and a water storage well not filled with the real objects, and the solid structure and the water storage well are arranged at intervals.

2. The permeable ground for sponge urban ecosystem according to claim 1, wherein a permeable partition is further provided between adjacent periodic structures, the permeable partition being disposed perpendicular to the water guide.

3. The permeable ground for the sponge urban ecosystem according to claim 2, wherein a plurality of permeable through holes are arranged on the permeable partition plate in the geotechnical layer region, and the permeable through holes are arranged in an array manner and are communicated with the adjacent periodic structures;

the water permeable partition is located in the quartz sand layer, the substrate layer and the vegetation layer area and is of a water-impermeable solid structure.

4. The permeable ground for use in a sponge urban ecosystem according to claim 3, wherein the water permeable barrier is an ultra high molecular polyethylene sheet.

5. The permeable ground for the sponge city ecosystem as claimed in claim 1, wherein the water conducting layer comprises a pipeline network and an impermeable filler, the pipeline network is composed of a plurality of pipelines which are communicated with each other vertically and horizontally, the pipeline network is communicated with the water storage well, and the impermeable filler is filled in the gap of the pipeline network.

6. The permeable ground for use in the sponge urban ecosystem according to claim 1, wherein the geotechnical layer is volcanic rock soil.

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