CN107354842A - A kind of park ecological permeable and the road for conserving vegetation - Google Patents

Abstract

An ecological water-permeable and vegetation-conserving road in a park, including a sidewalk surface layer, a sidewalk rainwater collection temporary storage layer, a permeable concrete base layer, a water-salt heavy metal ion adsorption layer, a conical catchment layer, a catchment layer cushion and a gravel coarse sand layer There is a sidewalk rainwater collection temporary storage layer under the sidewalk surface, and the sidewalk rainwater collection temporary storage layer is connected to each other through a permeable concrete filling layer; a sidewalk surface leveling layer is set above the permeable concrete base, and a seepage filter layer is set below the permeable concrete base A water-salt heavy metal ion adsorption layer is provided below the water seepage filter layer; a cone-shaped water collection layer is provided below the water-salt heavy metal ion adsorption layer, and the cone-shaped water collection layer is connected to the water collection layer cushion. The beneficial effects of the invention are: simple structure, good mechanical performance, easy processing, strong bearing capacity, stable quality, the road structure can recycle rainwater and accelerate rainwater infiltration and discharge, and the collected rainwater can be absorbed by the soil vegetation layer .

Description

A road for ecological permeation and vegetation conservation in the park

technical field

The invention relates to an ecological water-permeable and vegetation-conserving road in a park, which belongs to the technical control field of water collection and drainage.

Background technique

Sponge city is a new generation of urban stormwater management concept. It refers to the city's good "elasticity" in adapting to environmental changes and responding to natural disasters caused by rainwater. It can also be called "water elastic city". The international general term is "low-impact development stormwater system construction". When it rains, it absorbs, stores, infiltrates, and purifies water, and "releases" the stored water for use when needed.

As an important method of "ecological drainage", permeable pavement has become an important part of road drainage design. Permeable pavement is suitable for sidewalks, parking lots, parks, lightweight lanes and various stadium roads. In the past, there was no uniform standard for permeable pavement engineering, and the pavement was not permeable and air-permeable. Among them, the surface of permeable concrete was rough and the bearing capacity was low; Bricks rely on capillary pores to permeate water, which is easy to be blocked for a long time. If cement sand or fine stone concrete is used to lay water impermeable, the bearing capacity is also poor and the cost is high; there are also some permeable cement pavements that use the method of pre-embedded pipe racks, that is, plastic pipe racks first Place the mold on the cushion and pour concrete into it. After the concrete dries, the multiple through holes set in the pipe frame mold will become drainage holes. This method is costly and takes a long time to construct, and because the decorative surface layer is not If the permeable pavement material is combined with the permeable concrete pavement of the pipe frame method, it will not be able to achieve a permeable effect, and environmental protection and aesthetics cannot be balanced.

At present, the pavement of park roads generally adopts the method of pouring a sufficient amount of concrete to form a concrete layer. On the one hand, because the concrete is not permeable, the water on the pavement cannot seep into the soil below, which causes problems such as insufficient water in the soil, lack of oxygen, and rising ground temperature. Problems such as drought and water shortage, sometimes can only be discharged into the municipal pipe network through the manhole cover set on the roadside, so a large amount of water is likely to be accumulated on the road surface, which will bring adverse effects on the traffic of vehicles and pedestrians; when the rainfall intensity is heavy, it is more likely to occur Flooding or even flooding. On the other hand, due to the long-term inability of rainwater to infiltrate into the underground soil, the groundwater level will drop and the water in the soil will be insufficient. At the same time, the impermeable pavement also cuts off the natural exchange cycle between the moisture in the soil and the moisture contained in the atmosphere, which is prone to produce the "heat island effect", which will make the internal temperature of the city too high and lead to climate deterioration.

Contents of the invention

In order to solve the current problems of water accumulation on the road surface, rainwater purification and storage, and vegetation conservation, the present invention provides an ecological water permeable and vegetation conservation road in parks, which can effectively overcome the problems of existing urban drainage pipes when heavy rain comes. The network system cannot solve the problems of water system pollution caused by rainwater runoff and waterlogging caused by storm runoff; it can realize automatic control of rain collection, sewage interception, water purification, peak shaving and storage, and vegetation conservation.

The technical scheme that the present invention adopts is as follows:

An ecological water-permeable and vegetation-conserving road in a park, including a sidewalk surface layer (1), a sidewalk rainwater collection temporary storage layer (3), a permeable concrete base layer (5), a water-salt heavy metal ion adsorption layer (7), and a cone-shaped water collection layer layer (8), catchment layer cushion (9) and gravel coarse sand layer (13); the sidewalk surface layer (1) below is provided with sidewalk rainwater collection temporary storage layer (3), sidewalk rainwater collection temporary storage layer (3) connected to each other through the permeable concrete filling layer (2); the top of the permeable concrete base (5) is provided with a sidewalk surface leveling layer (4), and the bottom of the permeable concrete base (5) is provided with a water seepage filter layer (6 ); the water-salt heavy metal ion adsorption layer (7) is provided below the water-salt heavy metal ion adsorption layer (6); the cone-shaped water collection layer (8) is provided below the water-salt heavy metal ion adsorption layer (7), and the cone-shaped water collection layer ( 8) It is connected with the water-collecting layer cushion (9), and a waterproof cloth (20) is arranged at the junction, and a gravel coarse sand layer (13) is arranged under the water-collecting layer cushion (9); the conical water-collecting layer (8 ) is provided with a vertical drainage pipe (10) connected to the urban pipeline and a horizontal water collection pipe (11) for regulating and storing reservoirs (14) on both sides of the connecting road, and the rainwater in the regulating and storing reservoirs (14) can be used for planting soil layers (17) Absorb and conserve green belts (19).

Wherein, the cone-shaped water-collecting layer (8) and the water-collecting layer cushion (9) are at the same position, the cone-shaped water-collecting layer (8) is arranged in an inverted triangle, and the water-collecting layer cushion (9) is located in the cone-shaped Below the water-collecting layer (8), the outer layer of the tapered water-collecting layer (8) is pasted with a waterproof cloth (20), and the waterproof cloth (20) is made of polymer waterproof and breathable material mixed with cloth; the tapered water-collecting layer ( 8) and the width of the bottom edge of the water-collecting layer cushion (9) are the same as the width of the pavement surface (1).

Wherein, the longitudinal drainage pipe (10) is arranged at the bottom corner of the conical water collection layer (8), which helps rainwater to quickly enter the longitudinal drainage pipe (10) and the horizontal water collection pipe (11), and the longitudinal drainage The upper part of the pipe (10) and the horizontal water collection pipe (11) is provided with holes that allow seepage water to enter, and the intersection of the vertical drainage pipe (10) and the horizontal water collection pipe (11) is interconnected, and the conical water collection layer ( The vertical drainage pipe (10) set in 8) is connected to the urban pipeline, and the excess rainwater is quickly discharged when the rainwater is large. A pipeline cushion (12) is provided under the longitudinal drainage pipe (10), and the horizontal water collection pipe (11) is connected to The regulating and storing water storage tank (14) on both sides of the road, the lateral water collecting pipe (11) and the side wall of the regulating and storing water storage tank (14) are installed at a vertical angle.

Wherein, a water-permeable sand layer (18) is arranged next to the storage tank (14), and an overflow pipe (16) with one end connected to the storage tank (14) is arranged in the water-permeable sand layer (18). The flow pipes (16) are evenly distributed beside the storage pool (14), and the overflow pipe (16) is provided with a planting soil layer (17) and a green belt (19). The overflow pipe (16) is connected to the storage tank (14). The side wall of the pool (14) is installed at a vertical angle, the diameter of the overflow pipe (16) is 40mm～60mm, and the outer surface of the overflow pipe (16) is evenly distributed with a plurality of permeable holes, and the aperture of the permeable holes is 20mm～25mm.

Wherein, the water outlet hole (15) is provided above the storage tank (14) on both sides of the sidewalk surface layer (1); the water outlet hole (15) is higher than the sidewalk surface layer (1) 4cm-6cm, and the water outlet hole ( 15) The aperture is 3cm-5cm.

Wherein, the cross-section of the longitudinal drainage pipe (10) is circular, and its aperture is 80 mm to 100 mm. A pipe cushion (12) is arranged below the longitudinal drainage pipe (10), and the thickness of the pipe cushion (12) is 10mm to 15mm.

Wherein, the transverse water collecting pipe (11) has a circular cross section with a diameter of 80mm-100mm.

Wherein, the bottom surface of the regulating storage tank (14) is at the same height as the bottom surfaces of the permeable sand layer (18) and the gravel coarse sand layer (13).

Wherein, when the sidewalk surface layer (1) has a slope, the entire road structure is parallel to the direction of the slope.

Wherein, the sidewalk surface (1) adopts high-quality permeable concrete or permeable asphalt pavement; the sidewalk rainwater collection temporary storage layer (3) is made of better-quality graded gravel or ceramsite; the sidewalk surface is leveled The layer (4) is made of a mixture of cement mortar and fine stone concrete; the permeable concrete base (5) is laid with a reinforced grid; the seepage filter layer (6) is made of sand or pebbles with strong water permeability. The porosity of the water seepage filter layer (6) is 15% to 20%, and the water permeability coefficient of the water seepage filter layer (6) is 0.20mm/s; Medium, the medium for absorbing water, salt, and heavy metal ions contains montmorillonite, kaolinite or illite; the storage tank (14) is composed of high-strength reinforced concrete slabs, and the cross section is rectangular. The interior of (14) adopts the concrete layer to plaster the surface, and adds a waterproof coating to smear on the concrete layer.

Compared with the prior art, the beneficial effects of the present invention are: simple structure, good mechanical performance, easy processing, strong bearing capacity, stable quality, the road structure can recycle rainwater and accelerate rainwater infiltration and discharge, and the collected rainwater It can be absorbed by the soil vegetation layer, assist the growth of plants such as flowers and trees, and can effectively solve the problem of water accumulation on park roads. Through the collection, purification, storage, diversion, and discharge of rainwater on the park pavement, this structure has achieved the goals of peak load reduction, vegetation conservation, and water ecological restoration, which has important reference significance for the construction of "sponge city".

Description of drawings

Fig. 1 is a structural schematic diagram of a road for ecological permeation and vegetation conservation in a park according to the present invention.

Fig. 2 is a structural diagram of Embodiment 2 of a road for ecological water permeability and vegetation conservation in a park according to the present invention.

Fig. 3 is a structural diagram of Embodiment 3 of a road for ecological water permeability and vegetation conservation in a park according to the present invention.

In the figure: 1. Sidewalk surface layer; 2. Permeable concrete filling layer; 3. Sidewalk rainwater collection temporary storage layer; 4. Sidewalk surface leveling layer; 5. Permeable concrete base layer; 6. Water seepage filter layer; Adsorption layer; 8. Conical water collection layer; 9. Water collection layer cushion; 10. Vertical drainage pipe; 11. Horizontal water collection pipe; 12. Pipeline cushion; 13. Gravel and coarse sand layer; 14. Storage tank 15. Outlet hole; 16. Overflow pipe; 17. Planting soil layer; 18. Permeable sand layer; 19. Green belt; 20. Waterproof cloth.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments; in order to further illustrate the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, but they cannot be interpreted as limiting the protection scope of the present invention.

Example 1

As shown in Figure 1, an ecological water-permeable and vegetation-conserving road in a park includes, from top to bottom, sidewalk surface layer 1, permeable concrete filling layer 2, sidewalk rainwater collection temporary storage layer 3, sidewalk surface leveling layer 4, and permeable concrete Base layer 5, seepage filter layer 6, water-salt heavy metal ion adsorption layer 7, conical water collection layer 8, water collection layer cushion 9, vertical drainage pipe 10, horizontal water collection pipe 11, pipe cushion 12 and gravel coarse sand layer 13 The sidewalk surface layer 1 below is provided with a double-layer sidewalk rainwater collection temporary storage layer 3 to collect rainwater; the permeable concrete base 5 is located below the sidewalk surface leveling layer 4; the sidewalk surface leveling layer 4 is provided with a seepage filter layer 6 , used to filter out sand, stones and other particulate matter contained in rainwater; at the same time, a water-salt heavy metal ion adsorption layer 7 is arranged below the water-seepage filter layer 6, and a medium for absorbing water, salt and heavy metal ions is arranged in it, which can effectively Adsorbing the salt and heavy metal ions left in the seepage water can effectively reduce its pollution to the root system of plants under the pavement, which is conducive to the normal growth of vegetation in the park, and helps to improve the groundwater source, ecology, soil and other environments in the park; The water-collecting layer cushion 9 is connected to the conical water-collecting layer 8, and a waterproof cloth 20 is arranged at the junction. The water-collecting layer cushion 9 is located below the conical water-collecting layer 8, and the conical water-collecting layer 8 is an inverted triangle. type, which helps rainwater to quickly enter the vertical drainage pipe 10 and the horizontal water collection pipe 11. The upper parts of the vertical drainage pipe 10 and the horizontal water collection pipe 11 are provided with holes that allow water to enter. The intersection of the vertical drainage pipe 10 and the horizontal water collection pipe 11 The vertical drainage pipes 10 set in the water collection layer are connected to the urban pipelines, which can quickly discharge excess rainwater when the rainwater is heavy, and the pipeline cushion 12 is set under the vertical drainage pipes 10, and the horizontal collection The water pipe 11 communicates with the storage tank 14, which is located beside the road, and the rainwater in the storage tank 14 can be used for planting through the overflow pipe 16 arranged in the permeable sand layer 18 and the outlet hole 15 provided above. The soil layer 17 absorbs and conserves the green belt 19; the gravel coarse sand layer 13 is arranged under the water-collecting layer cushion 9, which can effectively increase the bearing capacity of the entire road structure.

Sidewalk surface layer 1 adopts high-quality permeable concrete or permeable asphalt pavement; sidewalk rainwater collection temporary storage layer 3 is made of better-quality graded crushed stone or ceramsite, and its permeability is greater than that of permeable concrete base layer 5; sidewalk surface leveling The layer 4 is made of cement mortar, fine stone concrete and other materials; the permeable concrete base 5 is preferably made of concrete with better water permeability, and the permeable concrete base 5 is laid with a steel grid frame, which can effectively increase the bearing capacity; seepage filter Layer 6 is paved with sand or pebbles with strong water permeability, and is used to filter out sand, pebbles and other particulate matter contained in rainwater. The porosity of the water seepage filter layer 6 is 15% to 20%. The water permeability coefficient of 6 is 0.20mm/s; the water salt heavy metal ion adsorption layer 7 is provided with a medium for absorbing water salt and heavy metal ions, and the medium for absorbing water salt and heavy metal ions contains montmorillonite, kaolinite or illite and other substances, which can effectively absorb the salt and heavy metal ions left in the seepage water; the storage tank 14 is composed of high-strength reinforced concrete slabs, and the cross section is rectangular. The interior of the storage tank 14 is plastered with a concrete layer. And add a waterproof coating on the concrete layer.

The cone-shaped water-collecting layer 8 and the water-collecting layer cushion 9 are at the same position, and are arranged in an inverted triangle shape. The water-collecting layer cushion 9 is located below the cone-shaped water-collecting layer 8, and a waterproof cloth 20 is arranged at the junction, that is The waterproof cloth 20 is pasted on the outer layer of the conical water collection layer 8, and the bottom edge width of the conical water collection layer 8 and the water collection layer cushion 9 is the same as the width of the pavement surface layer 1; the vertical drainage pipe 10 is arranged on the cone The bottom corner of the conical catchment layer 8 helps rainwater to quickly enter the vertical drain pipe 10 and the horizontal catchment pipe 11. The vertical drain pipe 10 arranged in the tapered catchment layer 8 is connected to the urban pipeline, which can be used when the rainwater is relatively low. When it is large, the excess rainwater is quickly discharged, and the pipe cushion 12 is arranged below the longitudinal drain pipe 10, and the horizontal water collection pipe 11 is connected to the storage tank 14, and the storage tank 14 is located beside the road.

An overflow pipe 16 is arranged in the permeable sand layer 18, and one end of the overflow pipe 16 communicates with the storage tank 14; The bottom of the soil layer 17, and extends outwards to the surrounding permeable sand layer 18 centered on the storage tank 14; after the rainwater enters the storage tank 14, it can pass through the permeable sand layer after entering the overflow pipe 16 18 is absorbed by the planting soil layer 17, and on the other hand, the green belt 19 can be conserved from the road surface through the outlet hole 15 arranged above the storage tank 14, so this road structure can not only effectively solve the problem of park road area water, but also It can recycle, filter and purify rainwater, and at the same time, the filtered and purified rainwater collected in the storage tank 14 can be absorbed by the planting soil layer 17, and effectively supplied to the green belt 19 through the outlet hole 15, assisting the growth of plants such as flowers and trees; The bottom end of the entire road structure, that is, a gravel coarse sand layer 13 is arranged below the water-collecting layer cushion 9, which can effectively increase the bearing capacity of the entire road structure.

Water outlet hole 15 is set at a position higher than sidewalk surface layer 1; Layer, that is, a waterproof cloth 20 is pasted at the junction of the water-collecting layer cushion layer 9 and the cone-shaped water-collecting layer 8. The waterproof cloth 20 is made of polymer waterproof and breathable material (PTFE membrane) mixed with cloth, and made of two layers of composite The vertical drainage pipe 10 is arranged at the bottom corner of the conical water collection layer 8, which helps rainwater to quickly enter the vertical drainage pipe 10, and the vertical drainage pipe 10 set in the conical water collection layer 8 is connected to the urban pipeline. , can quickly discharge excess rainwater when the rainwater is heavy, the cross-section of the longitudinal drainage pipe 10 is circular, and its aperture is 80 mm to 100 mm, and a pipe cushion 12 is arranged below the longitudinal drainage pipe 10, and the pipe cushion 12 The thickness is about 10mm ~ 15mm.

The diameter of the horizontal water collection pipe 11 is 80 mm to 100 mm; the diameter of the overflow pipe 16 is 40 mm to 60 mm; the horizontal water collection pipe 11 and the overflow pipe 16 are installed at a vertical angle to the side wall of the storage tank 14, and the installation angle is 90° The outer surface of the overflow pipe 16 is formed with a plurality of water-permeable holes, which are evenly distributed, which helps the water in the overflow pipe 16 to effectively infiltrate the permeable sand layer 18 around it, and then be planted by the planting soil layer 17. Absorption, effectively provided to the upper green belt 19, the aperture of the permeable hole is about 20mm to 25mm, and the permeable hole is preferentially and evenly distributed on the overflow pipe 16; the bottom surface of the storage tank 14 and the permeable sand layer 18 and gravel The bottom faces of the layers 13 are at the same height.

Example 2

As shown in Figure 2, when the road surface has a slope, the entire road structure is preferentially parallel to the direction of the slope, and other structures are the same as in Embodiment 1.

Example 3

As can be seen from Figure 3, this embodiment is basically the same as Embodiment 1 in terms of structure and principle, the difference is that the pavement structure proposed in this embodiment is generally applicable to parks or schools or some areas where the required load is relatively large. Small hard roads, such roads have less traffic and pedestrians, so the load required for the road surface is smaller, so the pavement surface of the sidewalk does not need to use permeable concrete or permeable asphalt pavement, and can use materials such as permeable bricks. The pavement structure described above It can also be used as some sidewalks with less traffic and less load in parks, schools or communities. The storage tanks are located on both sides of the sidewalk. Compared with embodiment 1, the rainwater filtration and purification, diversion, regulation and storage treatment facilities of this embodiment are relatively simple, because some hard roads do not need to carry out large-scale flowers and plants, irrigation of vegetation soil layers, and it has a certain effect on rainwater. Due to the natural filtering and purification effect of rainwater, there are relatively few pollutants in the rainwater. Therefore, the sidewalk surface in Figure 3 does not need to use permeable concrete or permeable asphalt pavement, and materials such as permeable bricks can be used.

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. A park ecological permeable and vegetation-conserving road, characterized in that it includes a sidewalk surface layer (1), a sidewalk rainwater collection temporary storage layer (3), a permeable concrete base (5), and a water-salt heavy metal ion adsorption layer (7 ), a conical catchment layer (8), a catchment layer cushion (9) and a gravel coarse sand layer (13); the sidewalk rainwater collection temporary storage layer (3) is provided below the sidewalk surface layer (1), The sidewalk rainwater collection temporary storage layer (3) is connected to each other through the permeable concrete filling layer (2); There is a seepage filter layer (6); a water-salt heavy metal ion adsorption layer (7) is provided below the water-salt filter layer (6); a cone-shaped water collection layer (8) is provided below the water-salt heavy metal ion adsorption layer (7), The conical water collection layer (8) is connected with the water collection layer cushion (9), and a waterproof cloth (20) is arranged at the junction, and a gravel coarse sand layer (13) is arranged under the water collection layer cushion (9); The vertical drainage pipes (10) connected to the urban pipelines and the horizontal water collection pipes (11) of the storage tanks (14) on both sides of the connecting road are arranged in the water collection layer (8), and the water in the storage tanks (14) The rainwater can be absorbed by the planting soil layer (17) and the green belt (19) can be conserved. 2. A kind of park ecological permeable and vegetation-conserving road according to claim 1, characterized in that: the cone-shaped catchment layer (8) and the catchment layer cushion (9) are at the same position, and the cone-shaped The water collection layer (8) is arranged in an inverted triangle shape, the water collection layer cushion (9) is located below the conical water collection layer (8), and the outer layer of the conical water collection layer (8) is pasted with a waterproof cloth (20), The waterproof cloth (20) is made of polymer waterproof and breathable material mixed with cloth; the width of the top edge of the conical water collecting layer (8) and the width of the bottom edge of the water collecting layer cushion (9) are the same as the width of the pavement surface (1) Same width. 3. A kind of park ecological permeable and vegetation-conserving road according to claim 1, characterized in that: the longitudinal drainage pipe (10) is arranged at the bottom corner of the conical catchment layer (8), It is helpful for rainwater to quickly enter the vertical drainage pipe (10) and the horizontal water collection pipe (11). ) and the horizontal water collection pipe (11) are connected to each other, the vertical drainage pipe (10) arranged in the conical water collection layer (8) is connected to the urban pipeline, and when the rainwater is large, the excess rainwater is quickly discharged, and the vertical drainage The pipe cushion (12) is arranged below the pipe (10), the horizontal water collecting pipe (11) communicates with the regulation and storage storage tanks (14) on both sides of the road, and the side of the horizontal water collection pipe (11) and the regulation and storage storage tank (14) The wall is installed at a vertical angle. 4. A kind of park ecological permeable and vegetation-conserving road according to claim 1, characterized in that: a permeable sand layer (18) is provided next to the described storage tank (14), and a permeable sand layer (18) An overflow pipe (16) with one end connected to the regulation and storage storage tank (14) is provided inside, the overflow pipes (16) are evenly distributed beside the regulation and storage storage tank (14), and planters are arranged above the overflow pipe (16). The soil layer (17) and the green belt (19), the overflow pipe (16) and the side wall of the storage tank (14) are installed at a vertical angle, the diameter of the overflow pipe (16) is 40mm～60mm, the overflow pipe (16) A plurality of permeable holes are uniformly distributed on the outer surface, and the diameter of the permeable holes is 20 mm to 25 mm. 5. The road for ecological water permeation and vegetation conservation in a park according to claim 1, characterized in that: water outlet holes (15) are provided above the storage tanks (14) on both sides of the sidewalk surface (1) ); the water outlet hole (15) is 4cm-6cm higher than the sidewalk surface (1), and the aperture of the water outlet hole (15) is 3cm-5cm. 6. The ecological water-permeable and vegetation-conserving road for a park according to claim 3, characterized in that: the cross-section of the longitudinal drainage pipe (10) is circular, its aperture is 80 mm to 100 mm, and the longitudinal drainage pipe (10) The below of (10) is provided with pipeline cushion (12), and the thickness of pipeline cushion (12) is 10mm～15mm. 7. The ecological water-permeable and vegetation-conserving road in a park according to claim 1, characterized in that: the transverse water collecting pipe (11) has a circular cross-section and a diameter of 80 mm to 100 mm. 8. A kind of park ecological permeable and vegetation-conserving road according to claim 4, characterized in that: the bottom surface of the described storage tank (14) and the permeable sand layer (18) and gravel coarse sand layer (13) ) are at the same height. 9. The ecological water-permeable and vegetation-conserving road in a park according to claim 1, characterized in that: when the sidewalk surface (1) has a slope, the entire road structure is parallel to the direction of the slope. 10. A kind of park ecological permeable and vegetation-conserving road according to claim 1, characterized in that: the sidewalk surface (1) adopts high-quality permeable concrete or permeable asphalt pavement; sidewalk rainwater is collected for temporary storage The layer (3) is made of better quality graded crushed stone or ceramsite; the pavement leveling layer (4) is made of a mixture of cement mortar and fine stone concrete; the permeable concrete base (5) is laid with a reinforced grid The water seepage filter layer (6) is paved with sandstone or pebbles with strong water permeability, the porosity of the water seepage filter layer (6) is 15% to 20%, and the water permeability coefficient of the water seepage filter layer (6) is 0.20mm /s; the water salt heavy metal ion adsorption layer (7) is provided with a medium for absorbing water salt and heavy metal ions, and the medium for absorbing water salt and heavy metal ions contains montmorillonite, kaolinite or illite; (14) is assembled by high-strength reinforced concrete slabs, and the cross section is rectangular, and the inside of the storage tank (14) is plastered with a concrete layer, and a waterproof coating is applied on the concrete layer.