CN217710153U - Road structure - Google Patents

Abstract

The utility model relates to a road structure, it sets up on plain soil layer, structure soil is at least including the first material layer, the second material layer that are used for providing the holding power and do benefit to the third material layer that the rainwater oozed down. The first material layer includes at least a first secondary material layer and a second secondary material layer different in porosity and water permeability from each other, the first secondary material layer having a porosity larger than the second secondary material layer. The utility model discloses a material that has different properties is laid, compares single filler material, also compromises the root system growth needs on different soil layers when guaranteeing rivers infiltration rate, and pertinence promotes plant roots to grow.

Description

Road structure

Technical Field

The utility model relates to an infrastructure technical field especially relates to a road structure.

Background

In current city construction, the way of digging planting pits is mostly adopted for planting the street trees at lanes and squares. Urban services and infrastructure around driveways and squares are often hard paved. The penetrable soil volume is not enough around the pavement tree root system, can restrict the root system on the one hand and utilize the absorption of moisture and nutrient, leads to trees to grow badly, and on the other hand can initiatively restrain the root system and to the absorption of moisture and nutrient when the root point portion grows to the edge of planting the hole and meet tight real soil, reduces respiratory rate, and then influences the health of trees.

On one hand, the non-permeable mat surface can limit water infiltration, so that the water supplement of plant root systems is insufficient, the plant growth is influenced, the urban drainage pressure is increased in rainstorm days, and the phenomenon of waterlogging is generated; on the other hand, the heat conductivity coefficient of the non-permeable mat surface is higher, so that the over-high soil temperature is easily caused in summer, the root system growth of the street trees is weakened, and even the death of root system cells is caused; in winter, the soil temperature is easy to be too low to freeze the plant root system; moreover, the ash soil of notoginseng is alkaline and not beneficial to the growth of the root system of the plant.

The prior art CN205124490U provides a structural soil greening system, which comprises: plant soil layer, pipe-line system, tree cave system, structure soil layer and earthing layer, plant the soil layer and be located the bottommost, and pipe-line system's one end is laid on planting the soil layer, and pipe-line system's the other end passes structure soil layer and earthing layer and is connected with the external world, and in the structure soil layer was located to tree cave system, the top on structure soil layer was equipped with the earthing layer. This prior art discloses a technical solution for providing support for public facilities using structural soil, removing the ventilation limitation of hard pavement laid by the pseudo-ginseng grey soil, and supplementing air and soil for planting trees.

However, the structural soil layer in the prior art is only one layer, and the root systems at all depths have different growth conditions in the growth process of the plants, so that the trees are difficult to grow quickly under the condition that the growth space is only provided for the root systems of the plants and the problem that the nutrient substances for the root systems to grow, which can be obtained in the growth process of the plants, are insufficient is ignored; in addition, because the infiltration speed of rivers in most structure soil that comprises the stone is greater than the infiltration speed in soil, plant roots can tend to the internal growth of structure soil for obtaining more moisture, and the intraformational nutrient substance of structure soil is lacked than planting soil, and the root system of plant appears the not enough condition of nutrient supply easily when most grow to in the structure soil, for guaranteeing that plant roots absorbs more nutrients, need provide more soil for plant roots.

Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the inventor has studied a lot of documents and patents while making the present invention, but the space is not limited to the details and contents listed, however, this is by no means the present invention does not have the features of these prior arts, but the present invention has all the features of the prior arts, and the applicant reserves the right to increase the related prior arts in the background art.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, this application has provided a road structure, under the condition that provides the holding power, can also be for the deep root system moisturizing of the trees in arid area, and the while is infiltration of rainwater with higher speed, alleviates municipal drainage pressure.

The specific technical scheme is as follows:

the road structure is characterized in that the road structure is arranged on a plain soil layer, and the structural soil at least comprises a first material layer for providing supporting force, a second material layer and a third material layer which is favorable for rapid infiltration of rainwater.

According to a preferred embodiment, said first layer of material comprises at least a first layer of secondary material and a second layer of secondary material having different porosity and water permeability from each other,

the porosity of the first secondary material layer is greater than the porosity of the second secondary material layer.

According to a preferred embodiment, the thickness of the first secondary material layer is less than the thickness of the second secondary material layer, the sum of the thicknesses of the first secondary material layer and the second secondary material layer being 50cm.

According to a preferred embodiment, the second material layer is dry cement mortar and the third material layer is water permeable bricks.

According to a preferred embodiment, the second layer of material is laid down to a thickness of 1-2cm.

According to a preferred embodiment, the device also comprises a tree pool and a conduit arranged at the bottom of the tree pool, wherein the conduit is provided with a through hole for water flow to flow out;

the bottom surface of the first material layer is higher than the bottom surface of the tree pool,

the guide pipe is communicated with the ground surface through the supply holes according to a mode that rainwater above the cushion layer can be guided to enter the lower part of the material layer to replenish water for deep root systems of trees.

According to a preferred embodiment, the conduit comprises a vertical conduit and a horizontal conduit, wherein one end of the vertical conduit close to the ground bottom is provided with an open opening, and the horizontal conduit is communicated with the vertical conduit and is arranged to surround the waist of the tree pool.

According to a preferred embodiment, the conduit comprises a vertical conduit and a horizontal conduit, wherein one end of the vertical conduit close to the ground bottom is provided with a closed opening, and the horizontal conduit is communicated with the vertical conduit and is arranged to surround the bottom of the tree pool.

According to a preferred embodiment, the supply hole comprises a first end communicated with the water inlet of the conduit and a second end communicated with the ground surface, the second end is further provided with a hole cover with a water-permeable hole, and a filter layer is connected to one side of the hole cover facing the supply hole in a manner that the filter layer can reduce pollutants in the ground surface water from entering the soil.

The utility model discloses an useful part lies in:

firstly, deep water replenishing: the road structure is utilized to increase the water infiltration rate, reduce surface runoff, increase the soil humidity around the tree pool, keep the soil around the tree pool moist for a long time, meet the water replenishing requirement of tree roots and promote the growth of trees; the guide pipe is laid at the bottom of the tree pool and is communicated with the guide pipe through the supply hole, so that the guide pipe can be used as an irrigation supply port, water, fertilizer or prevention and control drugs and the like which need to be supplied to deep root systems of plants can be conveniently guided to deep soil through the guide pipe, surface rainwater can be directly guided to the bottom of the tree pool through the guide pipe, water is supplemented to the bottom of the tree pool, the root systems of the trees are induced to grow towards the soil, the roots of the trees are induced to be deeply pricked while the deep root systems of the trees are supplemented with water, the performances of wind prevention, cold resistance and the like of the trees are improved, and the trees can grow and survive for a long time;

second, the layering sets up, promotes infiltration and water retention ability: according to the difference of the porosity of the structural soil of different layers, different material layers with different porosities have different water conductivity, and the material layer with larger porosity is beneficial to rapid infiltration of surface water; the soil layer with smaller porosity is arranged on the lower layer, so that water retention is facilitated;

thirdly, providing a root growth space, communicating the tree pool with the green land: compared with the traditional pseudo-ginseng grey soil cushion layer, the road structure has good air permeability, the bearing property of the structural soil is ensured by using the mutual overlapping of the stones, the soil is filled in the pores among the stones, space and nutrients can be provided for the growth of root systems, and meanwhile, the road structure can provide buffer space when the root systems penetrate through the road structure due to the existence of the pores, so that the road surface cannot be directly jacked to crack; and a channel with root systems rapidly penetrating through the sidewalk cushion layer and extending to the green land beside the road is created in a conditioned place, so that the growth space of the sidewalk root systems is further expanded, and the sidewalk trees can grow healthily for a long time.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a top view of a preferred embodiment of the present invention;

fig. 3 is a simplified side view of another preferred embodiment of the present invention.

List of reference numerals

100: a first material layer; 110: a first secondary material layer; 120: a second secondary material layer; 200: a second material layer; 300: a third material layer; 400: a plain soil layer; 500: a conduit; 501: a vertical conduit; 502: a transverse conduit; 510: a through hole; 520: a supply hole; 521: a first end; 522: a second end; 523: a filter layer.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 3.

A road structure is provided above a soil layer 400, the structural soil including at least a first material layer 100 for providing a supporting force, a second material layer 200 for attenuating air circulation so as to retain water, and a third material layer 300 for rapidly absorbing water.

According to a preferred embodiment, the first material layer 100 is filled with structural soil prepared from sand and soil to increase the growing space of the root system.

According to a preferred embodiment, said first material layer 100 comprises at least a first secondary material layer 110 and a second secondary material layer 120 having different porosity and water permeability from each other,

the porosity of the first secondary material layer 110 is greater than that of the second secondary material layer 120.

The water permeability from the first secondary material layer 110 to the second secondary material layer 120 is reduced in sequence, rainwater can rapidly infiltrate through the first secondary material layer 110 when falling, and the time of staying and accumulating on the ground surface is reduced. Since the on-way resistance coefficient of rainwater infiltrating into the underlying surface shows a decreasing trend along with the increase of the rain intensity, the faster the initial infiltration speed is, the more the accumulation amount of rainwater in the first secondary material layer 110 is, the smaller the flow resistance in the first secondary material layer 110 is, and a virtuous cycle of promoting rainwater infiltration is presented. When rainwater enters the second secondary material layer 120 later, the second secondary material layer 120 with the water permeability relatively poorer than that of the first secondary material layer 110 can keep a certain amount of rainwater, and the rainwater entering the second secondary material layer 120 can permeate into tree pool soil arranged in the structural soil, so that the rainwater permeating underground can be in contact with planted plant root systems to supplement water for the plant root systems, and the water content in the tree pool is kept in a certain time period. Meanwhile, when the moisture in the second secondary material layer 120 is more than the moisture in the first secondary material layer 110, the root system of the plant is induced to root into the deep soil rather than the surface soil, and the wind-proof stability of the plant is improved while the road surface is prevented from collapsing.

According to a preferred embodiment, the thickness of the first secondary material layer 110 is less than the thickness of the second secondary material layer 120, and the sum of the thicknesses of the first secondary material layer 110 and the second secondary material layer 120 is 30-60cm. According to a preferred embodiment, said second material layer 200 is dry cement mortar and said third material layer 300 is water permeable bricks.

According to a preferred embodiment, the second material layer 200 is laid to a thickness of 1-2cm. Preferably, the first and second sub material layers 110 and 120 are provided with structural soil containing a large amount of stones, and the pores of the structural soil are filled with soil. The bearing performance of the structural soil is ensured by utilizing the mutual lap joint of the stones, the soil is filled in gaps among the stones, the root system growth space is created, the nutrients are provided for the root system, and the water is accumulated by utilizing the water-retaining agent. The structural soil provides sufficient space, nutrients and moisture for root growth. The arrangement mode is favorable for the root system to grow out of the tree pool and extend into a road structure below the sidewalk, and the root system growth space is enlarged; and a channel with root systems rapidly penetrating through the sidewalk cushion layer and extending to the green land beside the road is created in a conditioned place, so that the growth space of the sidewalk root systems is further expanded, and the sidewalk trees can grow healthily for a long time.

According to a preferred embodiment, the bottom surface of the first material layer 100 is provided at a depth of 40-60cm in the subsurface. The area with the largest surface area and volume of the plant root system is 40-60cm, and the probability that the plant root system grows out of the tree pool is the largest in the area, so that the second secondary material layer 120 containing a large amount of nutrient substances is arranged in the area, the nutrient substances can be effectively supplemented for the plant, and the growth of the plant can be efficiently promoted; the plant root system has more abundant nutrients extending towards the lower, more moisture-rich vegetarian soil layer 400.

According to a preferred embodiment, the road structure further comprises a tree pool and a conduit 500 arranged at the bottom of the tree pool, wherein the conduit 500 is provided with a through hole 510 for water to flow out; the bottom surface of the first material layer 100 is higher than the bottom surface of the tree pool, and the guide pipe 500 is communicated with the ground surface through the supply hole 520 in a manner of guiding rainwater above the cushion layer to enter the lower part of the structural soil layer to replenish water for the deep root system of the tree; one end of the supply hole 520 is communicated with the ground surface, and the other end is communicated with the conduit 500.

According to a preferred embodiment, the conduit 500 comprises a vertical conduit 501 and a transverse conduit 502, the transverse conduit 502 communicating with the vertical conduit 501 for moisture supply. Preferably, the vertical duct 500 may be made of an environmentally friendly bamboo tube material. More preferably, the conduit 500 can also be a conventional PE or PVC pipe. Preferably, the vertical duct 501 can be provided in two. More preferably, the vertical conduits 501 are provided in four.

Preferably, the connection between the transverse conduit 502 and the vertical conduit 501 is provided with a flow guiding structure for guiding the water flow and the like in the vertical conduit 501 into the transverse conduit 502. One end of the flow guide structure is connected with the vertical conduit 501 and extends into the vertical conduit 501; the other end of the flow guiding structure is connected with a transverse conduit 502 and extends into the transverse conduit 501. Preferably, the flow guide structure is provided with an arc-shaped sheet, and the concave surface of the arc-shaped sheet faces the ground surface. Preferably, one end of the vertical conduit 501 close to the ground bottom is provided with an open opening, and water flowing down along the vertical conduit 501 can have a tendency of continuously diffusing towards the ground bottom, so that the water is guided to deeper soil, and the plant root is promoted to be tied deeper by utilizing the water permeability of the root. Preferably, horizontal pipe 502 sets up to badly wind tree pool bottom a week to around the tree pool with moisture water conservancy diversion, improve tree pool moisture uniform degree all around, make the trees root system grow more evenly towards the four sides, prevent wind the performance better.

As shown in fig. 1, one end of the vertical conduit 501 close to the ground bottom is set to be in a closed state, and the horizontal conduit 502 is set to surround the bottom of the tree pool for a circle, so that the horizontal conduit 502 guides water to the bottom of the tree pool for a circle to supplement water for the root system of the tree deep in the tree pool.

As shown in fig. 3, the one end that vertical pipe 501 is close to the ground bottom sets up to open opening, and horizontal pipe 502 sets up to encircleing tree pool waist a week to vertical pipe 501 is with moisture water conservancy diversion to tree pool bottom and horizontal pipe 502 is with moisture water conservancy diversion to tree pool waist a week, has improved the distribution uniformity degree of moisture in the vertical side in tree pool, has avoided moisture to influence trees root system growth in a large number of accumulations in tree pool bottom.

According to a preferred embodiment, the supply hole 520 comprises a first end 521 communicating with the inlet of the conduit 500 and a second end 522 communicating with the surface, and the supply hole 520 is arranged at an angle of less than ninety degrees to the direction of gravity in such a way that the flow of water is only able to flow by gravity along the second end 522 towards the first end 521. The second end 522 of the supply hole 520 facing away from the first end 521 is disposed in the third material layer 300, at least lower than the third material layer 300, and uniformly transits with the third material layer 300. In rainy days, water can enter the conduit 500 from the supply holes 520, thereby replenishing water to the deep root system of the tree. As shown in fig. 2, the vertical conduits 502 are disposed at four corners of the tree pool, the horizontal conduits 503 are disposed at the bottom of the tree pool, and the supply holes 520 are respectively communicated with two vertical conduits of two tree pools near the supply holes to obtain water supply. Preferably, the second end 522 of the supply hole 520 is further provided with a hole cover, and the hole cover is engaged with the second end 522 of the supply hole 520 and can be opened when necessary. The hole cover is provided with water permeable holes, and the hole cover is flush with the top surface of the third material layer 300 so as to take the flatness of the sidewalk and the water permeability of the supply holes 520 into consideration; in addition, when the rainwater amount is not large, the pollutants on the road surface can be firstly flushed into a road sewer and cannot enter the filtering layer to occupy the adsorption space of the filtering layer, so that the service life of the filtering layer is influenced; when the rainfall is big, partly rainwater can enter into supply hole 520 through second end 522, and then flow into deep soil in, can prevent that the excessive rainwater of stormy rain festival from getting into the underground and leading to ponding. Preferably, a filter layer 523 is also attached to the side of the orifice cover within the supply well 520. The connection can be a detachable connection or a fixed connection, preferably a detachable connection, in order to exchange the filter layer 523. The detachable connection is, for example, a snap connection. The filter layer 523 may be, for example, an activated carbon layer in combination with a nonwoven fabric. During the use, the handhole door keeps the closed state for a long time, and when the rainfall, the rainwater enters into supply hole 520 through the hole of permeating water on the handhole door, gets rid of rubbish, pollutant and salinity behind filter layer 523 through flowing through, and the rainwater after the filtration flows in again and can be with the rainwater water conservancy diversion to supply hole 520's first end 521, and then gets into in pipe 500 and is makeed the water supply to the deep soil moisturizing of tree pool bottom by the water conservancy diversion, avoids earth's surface rubbish, pollutant and salinity to enter into contaminated soil along with the rivers. When carrying out artifical irrigation, the user can open the handhole door, and the liquid manure of irrigation directly gets into supply hole 520 and need not flow through filter layer 523 for irrigation speed, avoid the nutrient in the fertilizer to be absorbed by filter layer 523 simultaneously and cause fertilizer to consume. Preferably, the supply holes 520 are provided in the structural soil between adjacent tree wells. Preferably, the supply hole 520 is further provided with a water flow collecting device for collecting water in the first material layer 100 for use at the bottom of the tree pool. Preferably, the bore diameter of the supply holes 520 is at least n times the inner diameter of the conduit 500, where n is the number of conduits 500 connected to the supply holes 520.

It should be noted that the above-mentioned embodiments are exemplary, and those skilled in the art can devise various solutions in light of the present disclosure, which are also within the scope of the present disclosure and fall within the scope of the present disclosure. It should be understood by those skilled in the art that the present specification and drawings are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents. Throughout this document, the features referred to as "preferably" are only an optional feature and should not be understood as necessarily requiring that such applicant reserves the right to disclaim or delete the associated preferred feature at any time.

Claims (9)

1. The road structure is characterized in that the road structure is arranged on a plain soil layer (400), and the structural soil comprises a first material layer (100) for providing a supporting force, a second material layer (200) and a third material layer (300) for facilitating rainwater infiltration; the road structure still includes tree pool and sets up pipe (500) that extend to tree pool bottom in the tree pool, offer on pipe (500) and be used for rivers outflow through-hole (510).

2. The road structure according to claim 1, characterized in that the thickness of the first material layer (100) is 50cm.

3. The road structure according to claim 1, characterized in that said second material layer (200) is dry cement mortar and said third material layer (300) is water permeable bricks.

4. The road structure according to claim 1, characterized in that the second material layer (200) has a laying thickness of 1-2cm.

5. Road structure as in claim 4, characterized in that the first material layer (100) comprises at least a first secondary material layer (110) and a second secondary material layer (120) having different porosities and water permeabilities from each other,

the porosity of the first secondary material layer (110) is greater than the porosity of the second secondary material layer (120).

6. The road structure according to claim 5, characterized in that the thickness of the first secondary material layer (110) is smaller than the thickness of the second secondary material layer (120).

7. The road structure of claim 6, wherein the conduit (500) is connected to the ground surface through a supply hole (520) in a manner that can guide rainwater above the bedding layer to enter below the soil layer of the structure to replenish water for the deep root system of the tree.

8. The road structure according to claim 7, characterized in that the conduit (500) comprises a vertical conduit (501) and a transverse conduit (502), wherein one end of the vertical conduit (501) near the ground bottom is provided with an open opening, and the transverse conduit (502) is communicated with the vertical conduit (501) and is provided to encircle the bottom or waist of the tree pool.

9. The road structure according to claim 7, characterized in that said replenishment hole (520) comprises a first end (521) communicating with the water inlet of said conduit (500) and a second end (522) communicating with the ground surface, said second end (522) being further provided with a hole cover with water permeable holes, said hole cover being connected, on the side facing inside said replenishment hole (520), with a filtering layer (523) in such a way as to reduce the ingress of contaminants in the ground water into the soil.

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