CN216838818U

CN216838818U - Multifunctional grass planting ditch

Info

Publication number: CN216838818U
Application number: CN202121695349.3U
Authority: CN
Inventors: 刘先媛; 丛海扬; 于田田; 李艳菊; 熊爱清
Original assignee: Lingnan Water Group Co ltd
Current assignee: Lingnan Water Group Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2022-06-28
Anticipated expiration: 2031-07-23

Abstract

The utility model relates to a multi-functional grass planting ditch, including former soil tamp layer, set gradually thick gravel layer, thin gravel layer and sand layer on former soil tamp layer, the thickness on thick gravel layer is greater than the thickness on thin gravel layer, and short plant is planted on sand layer, and the grass planting ditch is equipped with the curb in the one side that is close to the road, is provided with the wash port on the curb. The beneficial effects are as follows: the root system of the dwarf plant is spread over the sandy soil layer, rainwater passes through the plant root system, and most of metal ions, nutrients, pollutants and the like can be absorbed and degraded by the plant root system. The sand layer granule is less, is convenient for the underwater seepage, and the rainwater is in the infiltration, and the great pollutant of some granule can be detained to play the purification effect. The coarse gravel layer at the bottom has large particles and large pores, and is positioned at the lower layer, and the purification effect is weaker than that of a sand layer. The gravel layer has a plurality of gaps, which is convenient for storing water.

Description

Multifunctional grass planting ditch

Technical Field

The utility model relates to an urban afforestation, road rainwater field of handling, in particular to multi-functional grass planting ditch.

Background

The grass planting ditch refers to a ground surface ditch with vegetation, can collect, convey and discharge runoff rainwater, has a certain rainwater purification effect, and can be used for connecting other single facilities, urban rainwater pipe ditch systems and overproof rainwater runoff discharge systems. Urban non-point source pollution caused by storm runoff draws wide attention, and various technical measures are developed to control and reduce runoff pollution load entering a receiving water body, and a grass planting ditch is one of the runoff pollution load.

The grass planting ditch is a sponge facility which is artificially designed and constructed by simulating a natural green land and has the characteristics of controllability and engineering. The grass planting ditch realizes the collection, the transfer and the purification of rainwater by utilizing the synergistic action of the ditch and the plants, and is an important technical means for realizing the runoff total amount control, the pollutant total amount reduction, the flood peak delay and the groundwater supplement. The grass planting ditch can play an important role in areas with mild weather, abundant rainfall, dense river network and fast urbanization process.

In recent years, with the overall improvement of urbanization, the problems of urban waterlogging and non-point source pollution are increasingly prominent due to the increase of urban hard pavements. In the process of sponge city construction, by utilizing the interception and absorption of plants to pollutants and the percolation effect of soil, the grass planting ditches can be applied to sources, pollutant transmission paths and on-site treatment systems in low-influence development and sustainable drainage system measures, and application areas comprise residential areas, commercial areas and industrial areas.

Therefore, in order to solve the problems, the multifunctional grass planting ditch is designed, which is suitable for the roads of the second grade and the following roads and can carry out the initial treatment on rainwater pollutants.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art, provide a simple structure, low in construction cost's multi-functional grass planting ditch. The grass planting ditch is a landscape ground surface ditch drainage system for planting vegetation, is mainly used for rainwater pretreatment and rainwater transportation, and is used for replacing a traditional ditch drainage system. Can treat the initial rainwater pollutants and is suitable for roads of second grade and below.

The utility model provides a pair of multi-functional grass planting ditch, its technical scheme is:

the utility model provides a multi-functional grass planting ditch, grass planting ditch includes former soil tamp layer, has set gradually thick gravel layer, thin gravel layer and sand bed on former soil tamp layer, and the thickness on thick gravel layer is greater than the thickness on thin gravel layer, and short plant is planted on sand bed, and the grass planting ditch is equipped with the curb in the one side that is close to the road, is provided with the wash port on the curb.

Preferably, the particle size of the gravel in the coarse gravel layer is 8-12 cm.

Preferably, the thickness of the coarse gravel layer is 300mm or more.

Preferably, the particle size of the gravel in the fine gravel layer is 3 to 5 cm.

Preferably, the thickness of the fine gravel layer is greater than or equal to 100 mm.

Preferably, the thickness of the sand layer is greater than or equal to 200 mm.

Preferably, the kerbstone is provided with 5cm x 5cm drainage holes every 1.5-2 m.

Preferably, the planting density of the dwarf plant is 8 plants per square meter, the dwarf plant is a drought-enduring plant with the plant height not more than 1.2m, and the drought-enduring plant is dwarf reed or calamus.

Preferably, a drain is provided in the coarse gravel layer and connected to a reservoir or sewer.

Preferably, a pollutant filter belt is arranged beside the grass planting ditch.

The utility model discloses an implement including following technological effect:

the utility model discloses a grass planting ditch is the view nature earth's surface irrigation canals and ditches drainage system who plants the vegetation, mainly used rainwater earlier stage processing, rainwater transportation for replace traditional irrigation canals and ditches drainage system. Compare in the certain traditional drainage mode of drainage volume, the grass planting ditch can slow down the runoff velocity of flow through the delay of vegetation, filtration, adsorption function, gets rid of the pollutant in the runoff, utilizes elastic row to hold the space and reduces pressure and pollution that the rainwater caused to the urban drainage. The grass planting ditch has the following functions: (1) transferring rainwater runoff; (2) rainwater runoff stagnation and accumulation; (3) runoff pollutant reduction (4) supplements groundwater.

The utility model discloses a multi-functional grass planting ditch, the root system of short plant spreads throughout sandy soil layer, and the rainwater is through plant roots, and most metal ion, nutrients, pollutant and so on all can be absorbed the degradation by plant roots. The sand layer granule is less, is convenient for the underwater seepage, and the rainwater is in the infiltration, and the great pollutant of some granule can be detained to play the purification effect. The coarse gravel layer at the bottom has large particles and large pores, and is positioned at the lower layer, and the purification effect is weaker than that of a sand layer. The gravel layer has many gaps for storing water, and a drain pipe can be arranged on the gravel layer and connected to a reservoir or a sewer when the water needs to be used or the water is forbidden to seep. The border stone is used for separating the limit of road and grass planting ditch, can carry out effective separation to the great rubbish of volume on the road surface simultaneously, prevents that a large amount of rubbish from getting into the grass planting ditch and producing and piling up, causes the influence to the normal operation in grass planting ditch. The arrangement of the water outlet ensures that the road surface runoff can be normally discharged into the grass planting ditch system for effective purification.

Drawings

Fig. 1 is a schematic view of the sectional structure of the multifunctional grass planting ditch of the embodiment of the present invention.

Fig. 2 is a schematic view of a curb and a drain.

FIG. 3 is a schematic view of grass-planting furrows arranged on both sides of a road.

In the figure: 1. tamping the original soil; 2. a coarse gravel layer; 3. a fine gravel layer; 4. a sandy soil layer; 5. a dwarf plant; 6. a curb; 7. a drain hole; 8. and (4) road construction.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and the accompanying drawings, wherein the described embodiments are only intended to facilitate the understanding of the present invention, and do not limit the present invention in any way.

Referring to fig. 1 and fig. 2, the multifunctional grass planting ditch of the present embodiment includes an original soil rammed layer 1, a coarse gravel layer 2, a fine gravel layer 3 and a sand layer 4 are sequentially disposed on the original soil rammed layer 1, the thickness of the coarse gravel layer 2 is greater than that of the fine gravel layer 3, short plants 5 are planted on the sand layer 4, a curb 6 is disposed on a side of the grass planting ditch close to a road 8, and a drain hole 7 is disposed on the curb 6. Referring to fig. 3, grass planting furrows are arranged on both sides of the road 8. The gravel in the coarse gravel layer 2 has a particle size of 8-12cm and a thickness of 300mm or more; the gravel in the fine gravel layer 3 has a particle size of 3 to 5cm and a thickness of 100mm or more, the gravel particle size being the particle size of the longest side of the gravel. The thickness of the sand layer 4 is more than or equal to 200 mm; the kerbstone 6 is provided with drain holes 7 of 5cm multiplied by 5cm every 1.5 to 2 m. The short plant 5 is a drought-enduring plant with the plant height not more than 1.2m, the drought-enduring plant on the short plant 5 is short reed, calamus and the like, and the planting density is 8 plants per square meter. A drain pipe is arranged in the coarse gravel layer 2 and is connected to a reservoir or a sewer. And a pollutant filter belt is arranged beside the grass planting ditch to prevent excessive pollutants from entering the grass planting ditch. The original soil tamping layer 1 adopts an original soil tamping mode, has low manufacturing cost, is suitable for local conditions and can greatly reduce the construction cost. The kerbstone 6 can be made of concrete building plastics or stone materials, and has the advantages of simple and easily-obtained materials and low manufacturing cost.

The utility model discloses a multi-functional grass planting ditch, short plant 5's root system spreads over sand bed 4, and the rainwater is through plant roots, and most metal ion, nutrients, pollutant etc. all can be absorbed the degradation by plant roots. 4 particles on sand layer are smaller, so that infiltration is facilitated, rainwater is infiltrated, and some pollutants with larger particles can be retained, thereby playing a role in purification. The coarse gravel layer 2 at the bottom has large particles and large pores, and is positioned at the lower layer, and the purification effect is weaker than that of the sand layer 4. The gravel layer has many voids to facilitate water storage and may be provided with drains to a reservoir or sewer when water is to be used or when water is to be prevented from leaking. The border stone 6 is used for separating the limit of road and grass planting ditch, can carry out effective separation to the great rubbish of volume on the road surface simultaneously, prevents that a large amount of rubbish from getting into the grass planting ditch and producing and piling up, causes the influence to the normal operation in the grass planting ditch. The arrangement of the water outlet ensures that the road surface runoff can be normally discharged into the grass planting ditch system for effective purification.

The utility model discloses a multi-functional grass planting ditch has following technological effect:

the grass planting ditch can effectively remove suspended particles, organic pollutants, heavy metal ions, pathogens and other harmful substances in runoff;

secondly, the humidity and the temperature of the air in the environment can be adjusted through the transpiration of the plants in the grass planting ditch, and the urban microclimate environment is improved;

the grass planting ditch has low construction cost and simple maintenance and management;

compared with the traditional 8-sided ditch on the road, the functional grass planting ditch can give new landscape perception and visual perception to people. The grass planting ditch is used as a rainwater source control and comprehensive utilization facility with a sponge function and has a drainage function, a water purification function and a landscape function. The popularization and application of the grass planting ditches on the two sides of urban roads, walking streets, central isolation belts and park roads can fully play the important role of the grass planting ditches in improving the urban function and keeping the better ecological environment of the city. The application can reduce the construction environmental pollution, protect the living ecological environment and realize the harmony of people and nature. When designing the grass planting ditch, proper plants and structures are selected according to local pollution sources. High-tolerance plants are used at positions where dust, oil stains and chemical substances are easy to exist, such as positions close to roads, and a filter belt is added to prevent pollutants from entering a grass planting ditch. A waterway and drainage capacity are designed by fully considering local precipitation, slope design and maintenance are well made, and rainwater deposition and overflow are prevented.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The utility model provides a multi-functional grass planting ditch, the grass planting ditch includes native soil tamp layer, its characterized in that: the gravel layer, the fine gravel layer and the sand layer are sequentially arranged on the original soil compaction layer, the thickness of the coarse gravel layer is larger than that of the fine gravel layer, short plants are planted on the sand layer, a curb is arranged on one side, close to a road, of the grass planting ditch, and a drain hole is formed in the curb.

2. The multifunctional grass planting ditch of claim 1, wherein: the particle size of the gravel in the coarse gravel layer is 8-12 cm.

3. The multifunctional grass planting ditch of claim 2, wherein: the thickness of the coarse gravel layer is greater than or equal to 300 mm.

4. The multifunctional grass planting ditch of claim 1, wherein: the particle size of the gravels in the fine gravel layer is 3-5 cm.

5. The multifunctional grass planting ditch of claim 4, wherein: the thickness of the gravel layer is more than or equal to 100 mm.

6. The multifunctional grass planting ditch of claim 1, wherein: the thickness of sand layer is more than or equal to 200 mm.

7. The multifunctional grass planting ditch of claim 1, wherein: the kerbstone is provided with drain holes of 5cm multiplied by 5cm every 1.5 to 2 m.

8. The multifunctional grass planting ditch of claim 1, wherein: the planting density of the dwarf plants is 8 plants per square meter, the dwarf plants are drought-enduring plants with the plant height not more than 1.2m, and the drought-enduring plants are dwarf reeds or calamus.

9. The multifunctional grass planting ditch of claim 1, characterized in that: and a drainage pipe is arranged in the coarse gravel layer and is connected to a reservoir or a sewer.

10. The multifunctional grass planting ditch of claim 1, wherein: and a pollutant filter belt is arranged beside the grass planting ditch.