CN210002537U - lateral slope type grass planting ditch for sponge city - Google Patents

lateral slope type grass planting ditch for sponge city Download PDF

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Publication number
CN210002537U
CN210002537U CN201920444401.4U CN201920444401U CN210002537U CN 210002537 U CN210002537 U CN 210002537U CN 201920444401 U CN201920444401 U CN 201920444401U CN 210002537 U CN210002537 U CN 210002537U
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China
Prior art keywords
layer
grass planting
slope type
planting ditch
sponge city
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Active
Application number
CN201920444401.4U
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Chinese (zh)
Inventor
许可
任光柱
蒋兵
陈凯
刘兴武
尹诚
王泽远
李盛
刘萌
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China Exchange Second Highway Survey And Design Research Institute
Yueyang Road And Bridge Capital Construction Corp
Changsha University of Science and Technology
CCCC Second Highway Consultants Co Ltd
Original Assignee
China Exchange Second Highway Survey And Design Research Institute
Yueyang Road And Bridge Capital Construction Corp
Changsha University of Science and Technology
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Application filed by China Exchange Second Highway Survey And Design Research Institute, Yueyang Road And Bridge Capital Construction Corp, Changsha University of Science and Technology filed Critical China Exchange Second Highway Survey And Design Research Institute
Priority to CN201920444401.4U priority Critical patent/CN210002537U/en
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Abstract

The utility model relates to a sponge city construction field, concretely relates to side direction slope type grass planting ditches for sponge city, the grass planting ditch sets up between the recessed formula greenery patches between motor vehicle lane and pavement, the ditch body is from last to including the water storage layer down, organic overburden, improvement soil horizon, well coarse sand transition layer, the geotechnological cloth that permeates water, the gravel layer, prevention of seepage composite geomembrane and plain soil, the gravel layer is connected with horizontal drain pipe, drain pipe connection to municipal rainwater well, the slot concave point of side direction slope type grass planting ditch is located the 1/5 department that recessed formula greenery patches is close to the motor vehicle lane side, the concave arc that forms in water storage layer bottom compares with current grass planting ditch, the utility model discloses a characteristics are to make side direction slope type with the grass planting ditch structure to solve recessed formula greenery patches and cause the problem that vegetation and ecological tree pool survival rate are low because of long-term bubble water, guarantee the vegetation survival rate, make the sponge city have more absorb water, retaining, infiltration and the.

Description

lateral slope type grass planting ditch for sponge city
Technical Field
The utility model belongs to sponge city construction field relates to side direction slope formula grass planting ditches for sponge city.
Background
China has high urbanization development strength and more hardened pavements, destroys the original ecological system, particularly mountains, water sheltering, forest destroying, land occupation and lake filling, changes the original natural ecological background and hydrological characteristics of cities, and discharges runoff formed by more than 70 percent of rainfall so that the cities cannot hold water and have the phenomena of 'heavy rain waterlogging and dry after rain', and the problem of waterlogging after heavy rainfall brings many problems and economic loss due to the lagging construction of urban underground drainage systems.
The concept of 'sponge city' is provided, the sponge city can fully play the natural purification function of vegetation, soil, wetland and the like on water quality, so that the city looks like 'sponge' , has the functions of absorbing and releasing rainwater, and can elastically adapt to environmental change and respond to natural disasters.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the not enough of current traditional type grass planting ditch existence, provide kinds of side direction slope formula grass planting ditches that are used for the sponge city.
In order to achieve the above purpose, the technical scheme of the utility model is that:
lateral slope type grass planting ditch for sponge city comprises a ditch body, wherein the ditch body sequentially comprises a water storage layer, an organic covering layer, an improved soil layer, a medium coarse sand transition layer, a permeable geotextile, a gravel layer, an impermeable composite geomembrane and plain soil from top to bottom, the gravel layer is connected with a transverse drain pipe, the drain pipe is connected to a municipal rainwater well, the organic covering layer is made of bark and 3-5 cm thick, the improved soil layer is formed by mixing 75% of planting soil, 20% of coconut chaff and 5% of humus soil, the permeable geotextile is arranged between the medium coarse sand transition layer and the gravel layer, the impermeable composite geomembrane is arranged between the gravel layer and the plain soil, a groove concave point of the lateral slope type grass planting ditch is located in a position 1/5, close to the side of a motor vehicle road, of a concave bottom of the water storage layer forms an arc shape.
The utility model discloses advance steps and set up organic overburden, organic overburden adopts the bark, and thickness is 3 ~ 5 cm.
The utility model discloses advance steps and set up improvement soil horizon, improvement soil horizon comprises 75% planting soil, 20% coconut husk and 5% saprophytic soil, and thickness is 60 ~ 80 cm.
The utility model discloses advance step and set up the geotechnological cloth that permeates water and the compound geomembrane of prevention of seepage, the geotechnological cloth that permeates water sets up between medium coarse sand transition layer and gravel layer, and the compound geomembrane of prevention of seepage sets up between gravel layer and plain soil.
The utility model discloses advance step and set up the slot concave point in the 1/5 department that the formula greenery patches of caving in is close to the motor vehicle road side.
Drawings
Fig. 1 is a schematic view of lateral slope type grass planting ditches for sponge cities according to the embodiment of the present invention;
the reference numerals for the various elements in the figures are illustrated as follows:
1-an aquifer; 2-an organic capping layer; 3-improving the soil layer; 4-medium coarse sand filtering layer; 5-permeable geotextile; 6-gravel drainage layer; 7-impermeable composite geomembrane; 8-a drain pipe; 9-groove pits; 10-a vehicle lane; 11-sidewalk
Detailed Description
For better understanding of the present invention, the present invention will be described in detail with reference to the drawings and specific embodiments , wherein the embodiments are only used for illustrating the technical solution of the present invention and are not used for limiting the present invention.
A lateral slope type grass planting ditch for sponge city, as shown in figure 1, the lateral slope type grass planting ditch is arranged between a motor vehicle lane 10 and a sidewalk 11, a groove concave point 9 is positioned at 1/5 position between the concave green lands close to the motor vehicle lane 10, water-resistant herbaceous plants and woody plants are planted on the grass planting ditch to play the role of water storage and landscape, and the ditch body sequentially comprises a water storage layer 1, an organic covering layer 2, an improved soil layer 3, a medium coarse sand transition layer 4, a permeable geotextile 5, a gravel layer 6, an impermeable composite geomembrane 7 and plain soil from top to bottom.
The utility model discloses an in the embodiment, motor way 10 and 11 runoff rainwater on pavement flow to the grass planting ditch through the curb opening, and the slot in grass planting ditch holds a small amount of rainwater, and unnecessary rainwater progressively oozes down through water-storage layer 1, flows through organic overburden 2, improvement soil horizon 3, well coarse sand transition layer 4, the geotechnological cloth 5 that permeates water, gravel layer 6, and the rainwater is behind the inside sections of time that stops of grass planting ditch structure, arranges to municipal rainwater well through drain pipe 8 at last.
The organic covering layer 2 is made of tree bark and is 3-5 cm thick, rainwater can be primarily filtered by the organic covering layer, large-particle pollutants cannot directly permeate into the improved soil layer, the preliminary filtering effect is achieved in the aspect of , hardening of the improved soil layer is prevented, in addition, the organic covering layer can continuously provide organic nutrients for the lower improved soil layer in the aspect of , vegetation survival is facilitated, the thickness of the improved soil layer 3 is 60-80 cm, the improved soil layer is formed by mixing 75% of planting soil, 20% of coconut husk and 5% of humus soil, the improved soil layer 3 is slightly compacted manually after being laid, the middle coarse sand transition layer 4 plays a filtering effect and is 10-15 cm thick, the permeable geotextile 5 is arranged between the middle coarse sand transition layer 4 and the gravel layer 6, rainwater can be filtered and purified in a step, meanwhile, the retention time of rainwater in a grass planting ditch can be prolonged, the weight of the geotextile specification of is not less than 300g/m2The thickness is more than or equal to 0.25mm, the tearing strength is more than or equal to 400N, the thickness of the gravel layer 6 is 30cm, a transverse drain pipe 8 is arranged in the gravel layer 6 and is connected to a municipal rainwater well, an anti-seepage composite geomembrane 7 is arranged between the gravel layer 6 and the plain soil, the anti-seepage composite geomembrane can adopt a form of two pieces of cloth membranes, the specification is that the weight is more than or equal to 300g/m2The thickness is more than or equal to 0.25mm, the tearing strength is more than or equal to 8KN/m, and the impermeable composite geomembrane is wrapped on the interface of the green land and the motor vehicle lane 10 and the sidewalk 11 for reverse filtration.
To sum up, the utility model discloses carry out the optimization of structure and material to traditional type grass planting ditch, can guarantee that grass planting ditch top vegetation survives, and have the ability of good absorption of water, infiltration, water purification, retaining.

Claims (2)

  1. lateral slope type grass planting ditches for sponge cities are characterized in that the lateral slope type grass planting ditches sequentially comprise a water storage layer, an organic covering layer, an improved soil layer, a medium coarse sand transition layer, a gravel layer and plain soil from top to bottom, a permeable geotextile is arranged between the medium coarse sand transition layer and the gravel layer, an impermeable composite geomembrane is arranged between the gravel layer and the plain soil, the gravel layer is connected with a transverse drain pipe, the drain pipe is connected to a municipal rainwater well, a groove concave point is located at 1/5 position of a concave green land close to the side of a motor vehicle road, and the bottom of the water storage layer is concave to form an arc shape.
  2. 2. The side slope type grass planting ditch for sponge city as claimed in claim 1, wherein the organic covering layer is bark 3-5 cm thick and the improved soil layer is 60-80 cm thick.
CN201920444401.4U 2019-04-02 2019-04-02 lateral slope type grass planting ditch for sponge city Active CN210002537U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920444401.4U CN210002537U (en) 2019-04-02 2019-04-02 lateral slope type grass planting ditch for sponge city

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920444401.4U CN210002537U (en) 2019-04-02 2019-04-02 lateral slope type grass planting ditch for sponge city

Publications (1)

Publication Number Publication Date
CN210002537U true CN210002537U (en) 2020-01-31

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Family Applications (1)

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CN201920444401.4U Active CN210002537U (en) 2019-04-02 2019-04-02 lateral slope type grass planting ditch for sponge city

Country Status (1)

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CN (1) CN210002537U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113445382A (en) * 2021-07-28 2021-09-28 广州园林建筑规划设计研究总院有限公司 High ground water level area early sponge type road auxiliary system and road

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113445382A (en) * 2021-07-28 2021-09-28 广州园林建筑规划设计研究总院有限公司 High ground water level area early sponge type road auxiliary system and road

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