CN216766138U - Ecological drainage ditch - Google Patents

Abstract

The utility model discloses an ecological drainage ditch which comprises a ditch body, a reverse filtering structure and greenery patches, wherein the reverse filtering structure is arranged above the ditch body and comprises a water-permeable cover plate, a second layer of water-permeable non-woven geotextile, reverse filtering graded sand and stone particles, a first layer of water-permeable non-woven geotextile and pumice patches which are sequentially arranged from bottom to top, and the greenery patches are arranged above the reverse filtering structure. The ecological drainage ditch provided by the utility model is combined with the construction concept of a sponge city, and has the functions of rainwater collection and drainage of the traditional drainage ditch, the functions of rainwater retention, purification and recycling and a better landscape effect by arranging the reverse filtering structure matched with the water storage cavity, and can be applied to road engineering, garden engineering and farmland hydraulic engineering with higher requirements on greening and landscape.

Description

Ecological drainage ditch

Technical Field

The utility model belongs to the technical field of drainage ditches, and particularly relates to an ecological drainage ditch.

Background

The existing drainage ditches are generally divided into open drainage ditches and hidden drainage ditches (also called blind ditches). The open trench directly collects surface water, structures such as concrete or masonry are mostly adopted, although design and construction are convenient, the landscape effect is poor, only the rainwater collection function can be realized, the function is single, and the sponge urban construction concept of rainwater on-site collection, purification and utilization is not met; the blind ditch is arranged in the foundation, mostly adopts coarse grain materials such as filling crushed stones, gravels and the like, and is paved with an inverted filter layer for draining groundwater or ground surface seepage, has a certain filtering function, but has small water discharge amount and no water catchment function.

Therefore, it is a problem to be solved by those skilled in the art to provide an ecological drainage ditch conforming to the concept of sponge city.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the existing drainage ditch, the utility model aims to provide the ecological drainage ditch which combines the sponge city concept, can realize the on-site collection and purification of rainwater and has better landscape effect.

In order to achieve the purpose, the ecological drainage ditch provided by the utility model comprises a ditch body, an anti-filtration structure and greenery patches, wherein the anti-filtration structure is arranged above the ditch body and comprises a water-permeable cover plate, a second layer of water-permeable non-woven geotextile, anti-filtration graded sandstone particles, a first layer of water-permeable non-woven geotextile and pumice which are sequentially arranged from bottom to top, and the greenery patches are arranged above the anti-filtration structure.

Furthermore, the groove body adopts the design of underdrain, and its section is U type structure, and the ditch body adopts reinforced concrete structure.

Further, a plain concrete cushion layer is arranged between the groove body and the soil foundation.

Furthermore, the water-permeable cover plate is connected with the groove body through a placing table arranged at the U-shaped opening of the groove body.

Furthermore, the section of the second layer of permeable non-woven geotextile is in a U-shaped structure.

Further, the U-shaped opening of the groove body is completely covered by the first layer of the water-permeable non-woven geotextile.

Furthermore, the pumice is formed by scattering pumice with the particle size of 20-50 mm.

Furthermore, planting soil is arranged between the green plants and the reverse filtering structure.

Further, the ecological drainage ditch is also provided with a drainage structure, and the drainage structure is connected with the groove body.

Further, the drainage structure is composed of a plastic drainage pipe.

The ecological drainage ditch provided by the utility model combines the construction concept of sponge cities, and has the functions of rainwater collection and drainage of the traditional drainage ditch, retention, purification and recycling of rainwater and a better landscape effect by arranging the reverse filtering structure matched with the water storage cavity.

Meanwhile, the structural arrangement of pumice, the first layer of permeable geotextile, the graded sandstone reversed filter layer and the second layer of permeable geotextile in the reversed filter structure solves the problems of growth and survival of surface plants and clogging prevention of a drainage channel.

Drawings

The utility model is further described below in conjunction with the appended drawings and the detailed description.

FIG. 1 is a schematic sectional view of an eco-drainage ditch according to the present embodiment;

FIG. 2 is a detailed view of the reverse filtering structure in this example;

fig. 3 is a schematic view of a drainage structure in this example.

The reinforced concrete structure 110, the plain concrete cushion layer 120, the soil foundation 130, the pumice 210, the first layer of permeable non-woven geotextile 220, the second layer of permeable non-woven geotextile 230, the reverse filtration graded sand particles 240, the permeable cover plate 250, the planting soil 260, the green plants 270 and the plastic drain pipe 280.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained below by combining the specific drawings.

To the not enough that current escape canal exists, this example provides an ecological escape canal, combines the construction theory in sponge city, through setting up and retaining cavity matched with anti-structure of straining for this ecological escape canal not only has the rainwater of traditional escape canal and collects, discharges the function, still has the function of holding, purifying, retrieval and utilization stagnates to the rainwater, can be applied to in road engineering, garden engineering and the farmland hydraulic engineering that require to afforest, the view is higher.

As shown in fig. 1, the ecotype drainage ditch provided by the embodiment comprises a groove body, an anti-filtering structure and a green plant 270, wherein the anti-filtering structure is arranged on the upper part of the water storage cavity of the groove body and used for purifying rainwater entering the water storage cavity of the groove body, and the green plant 270 is arranged on the anti-filtering structure and has the functions of attractiveness and environmental protection.

Specifically, the groove body in this example is designed as a blind groove, the cross section of the groove body is of a U-shaped structure, and the groove body is formed by a reinforced concrete structure 110.

In order to improve the practical reliability of the ecological drainage ditch, the present embodiment performs the compacting operation on the corresponding soil foundation 130 before the reinforced concrete structure 110 is installed.

Further, a plain concrete cushion layer 120 is arranged between the reinforced concrete structure 110 and the soil foundation 130 to solve the problem that the water stability of the soil foundation 130 is poor, so that the water stability and frost heaving resistance of the structure can be improved, and load can be diffused to prevent deformation of the soil foundation.

The anti-structure setting of straining in this example is on the upper portion of ditch groove body retaining cavity, sets up with the cooperation of U type mouth for purify the rainwater that gets into ditch groove body retaining cavity.

As shown in fig. 2, the reverse filtering structure includes a water-permeable cover plate 250, a second layer of water-permeable non-woven geotextile 230, a reverse filtering graded sand and stone particles 240, a first layer of water-permeable non-woven geotextile 220 and pumice 210 which are arranged in sequence from bottom to top.

Wherein, the apron of permeating water of preferred adoption combined material when the apron 250 specifically sets up, it has very high resistance to compression, bending resistance, intensity of shock resistance, and is tough, can improve the practical reliability of ecological escape canal.

In addition, the water-permeable cover plate 250 is preferably connected by installing a placing table at the U-shaped opening of the groove body, and the depth of the placing table at the U-shaped opening of the groove body is set according to the total thickness of the reverse filtering structure in actual installation, so that the ecological drainage ditch with the same height as the ground can be ensured.

The setting of the nonwoven geotechnical cloth 230 that permeates water of second floor is the U type in the top and the section of the apron 250 that permeates water, and structure setting like this can ensure to filter most impurity, prevents that impurity from getting into the ditch groove body through the seam.

The reverse filter graded sand and stone particles 240 are arranged above the second layer of water-permeable non-woven geotextile 230 and are consistent with the U-shaped opening of the groove body in height.

A first layer of water-permeable non-woven geotextile 220 is arranged above the reverse filter graded sand particles 240 and covers the U-shaped opening of the groove body.

This example adopts the multilayer formula of double-deck non-woven fabrics that permeates water and combines grit granule layer to strain the structure, can effectively prevent to take place the filter bed inefficacy problem because of the stifled emergence of silt, is fit for long-term the use and easily manages and protects, and in addition, geotechnological cloth still has the muscle effect of adding muscle, helps keeping the stability of vegetation.

The first layer of water-permeable non-woven geotextile 220 is also provided with pumice 210, which is beneficial to vegetation growth and prevents silting.

The pumice is an excellent soil conditioner, has high porosity, and therefore has excellent water retention and air retention performances, and is scattered on the first layer of the permeable nonwoven geotextile, so that proper water is reserved in the maintenance period and the rainfall period by utilizing the water retention and air permeability of the pumice, and vegetation growth is facilitated; and secondly, the dispersed pumice with the particle size can prevent the surface of the geotextile from forming a large-area filter cake, namely a weakly permeable layer formed by filter substances, so that the effect of preventing silting is achieved, the pumice resources in China are very rich, and the pumice has the excellent characteristics of nature, corrosion resistance, no pollution, no radioactivity and the like, is an ideal natural, green and environment-friendly product, and is widely applied to the fields of buildings, gardens and the like.

The pumice stones 210 in this example are preferably made of a dispersion of pumice stones having a particle size of 20 to 50 mm.

The green plants 270 are arranged on the pumice stones 210 with the scattered particle sizes of 20-50 mm, and vegetation such as vegetation and small shrubs can be planted by paving the green planting soil 260 on the pumice stones.

As shown in fig. 3, the eco-drainage ditch provided in this example is further provided with a drainage structure provided in communication with the bottom of the gutter body.

The drainage structure in this example is composed of a plastic drainage pipe 280 having a drainage slope, by way of example, and the purified water is drained through the plastic drainage pipe 280.

This example provides an ecotype escape canal has following advantage:

firstly, the rainwater that has traditional escape canal is collected, is discharged the function, collects the yardstick of cavity through the adjustment rainwater, can realize the collection function of a large amount of rainwater.

Secondly, the construction concept of the sponge city is combined, the functions of retaining, purifying and recycling the rainwater are achieved, the collected rainwater is filtered by the plants, the non-woven geotextile layer and the reverse filter layer, most of impurities are filtered, the rainwater is discharged into a river or municipal rainwater drainage system after being purified, surface runoff is reduced, and ecological and physical dual purification effects of the rainwater are achieved.

Thirdly, the ecological drainage ditch is beautiful and environment-friendly, the ground cover or the small shrub planted on the ecological drainage ditch has good landscape effect and low maintenance cost, can be integrated with the urban green land system and becomes an important component part for urban ecological environment construction, so that the city has the 'surface' and the 'lining' more.

And fourthly, by a composite reverse filtering structure of pumice, the first layer of permeable geotextile, the graded sandstone reverse filtering layer and the second layer of permeable geotextile, the problems of growth and survival of the plants on the ground surface and the key problem of preventing the clogging of the drainage channel are solved.

Fifthly, the required raw materials such as concrete, geotextile, sand and stone are all common engineering building materials, and the construction is convenient and the maintenance is easy.

The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the utility model, and such changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides an ecotype escape canal, its characterized in that includes the ditch groove body, anti-structure of straining and green planting, anti-structure of straining sets up in the top of ditch groove body, includes by the apron that permeates water, the second floor that permeate water non-woven geotechnique cloth, anti-grit granule, the first layer of permeating water non-woven geotechnique cloth and pumice of straining grading that set gradually from lower to supreme, green planting sets up in the top of anti-structure of straining.

2. The ecological type drainage ditch according to claim 1, wherein the ditch body is designed as an underdrain, the section of the ditch body is of a U-shaped structure, and the ditch body is of a reinforced concrete structure.

3. The ecotype drainage ditch according to claim 2, wherein a plain concrete cushion layer is further provided between the ditch body and the soil base.

4. The ecological type drainage ditch according to claim 1, wherein the water-permeable cover plates are connected by providing a rest at a U-shaped opening of the groove body.

5. The ecological type drainage ditch of claim 1, wherein the cross section of the second layer of water-permeable non-woven geotextile is in a U-shaped structure.

6. The ecological type drainage ditch of claim 1, wherein the first layer of water-permeable non-woven geotextile completely covers the U-shaped opening of the ditch body.

7. The ecotype drainage ditch according to claim 1, wherein the pumice stones are interspersed with each other to form a pumice stone having a particle size of 20 to 50 mm.

8. The ecological drain ditch of claim 1, wherein planting soil is further disposed between the green plants and the inverted filter structure.

9. The ecological drainage ditch according to claim 1, wherein the ecological drainage ditch is further provided with a drainage structure, and the drainage structure is connected with the ditch body.

10. The ecological drain of claim 9, wherein the drainage structure is comprised of a plastic drain pipe.

Images