CN111335112B

CN111335112B - Environment-friendly sponge artificial turf and construction method thereof

Info

Publication number: CN111335112B
Application number: CN202010233563.0A
Authority: CN
Inventors: 闫宝生
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2024-04-30
Anticipated expiration: 2040-03-27
Also published as: CN111335112A

Abstract

The invention discloses an environment-friendly sponge artificial lawn and a construction method thereof. The original soil layer is regularly concave-convex (is wavy) according to the preset slope laying requirement and interval, a plurality of drainage ditches are formed in the valley bottom, a filament geotextile isolation layer is paved in each drainage ditch, then a perforated corrugated pipe is paved, and a screen window net is wrapped outside the corrugated pipe. The corrugated pipe is connected with a drain pipe, and the drain pipe is connected with a reservoir buried outside the lawn field. The lawn reduces construction difficulty and cost, eliminates postharvest caused by hardening, has good water permeability, avoids the environmental pollution problems of back glue, glue adhesion, rubber particles and the like of the traditional artificial lawn, realizes the concept of a sponge body, namely reasonable collection and reutilization of redundant moisture, and can be used for site watering maintenance and other irrigation watering.

Description

Environment-friendly sponge artificial turf and construction method thereof

Technical Field

The invention belongs to the technical field of artificial turf construction, and particularly relates to an environment-friendly sponge artificial turf and a construction method thereof.

Background

The traditional artificial turf building method generally needs to harden (cement or asphalt) a foundation layer, then lay a damping cushion layer, reach the gum turf of the required density, and finally fill sand and rubber particles with a certain thickness.

However, the conventional lawn has the following disadvantages:

(1) The construction is not environment-friendly: the base layer of the traditional artificial lawn is generally hardened, various problems caused by hardening, such as runoff only in drainage way, higher temperature in summer and the like, cannot be avoided, and the traditional artificial lawn has extremely high requirements on the material, hardness, flatness and drainage gradient of the foundation, and is relatively high in construction difficulty and construction cost.

(2) The safety performance is low: the traditional artificial turf needs to be built by using a large amount of rubber and chemical synthetic products and filling artificial synthetic rubber particles, and the components have certain toxic and side effects and subsequent potential safety hazards caused by instability. Is a great pollution source for the environment, and the recent toxic lawn runway events are frequent.

(3) The exercise performance is poor: athletes can play a strong countermeasure on the artificial grass sports field with a hardened foundation, and the probability of injuries such as contusion, sprain and the like on ankle joints and knee joints is high.

(4) The system is impermeable to water: on the basis of traditional hardening, moisture cannot permeate downwards, only surface runoff can be discharged, moisture cannot be collected and reused, and extremely high waterlogging pressure is caused.

On the basis, the invention provides the planning and construction of the environment-friendly sponge artificial turf: the sponge artificial lawn is like sponge city construction, and aims at the long-term benefits of human beings and the sustainable utilization of resources and the sustainable development of environment. Emphasis is placed on the use of green, ecologically "flexible" or "flexible" facilities, and on the effective engagement with traditional "rigid" facilities. By combining hardness and softness, a 'sponge body' is established and perfected, and the drainage control and management of runoff rainwater are enhanced, so that multiple targets of relieving site waterlogging, reducing runoff, improving the rainwater recycling level, reducing the control cost of the stormwater waterlogging and the like are realized, and a sustainable and healthy water circulation system is finally constructed. Rainwater seeps downwards through the sponge bodies, stagnates and holds, purifies, recycles, and finally the runoff of the rest part is discharged outside through municipal pipe network and pump station, so that the utilization rate of the water can be effectively improved, and meanwhile, the pressure of waterlogging is effectively relieved.

Disclosure of Invention

The invention aims to provide an environment-friendly artificial turf with a cavernous body and a construction method thereof, which are used for solving the problems of the prior turf.

In order to achieve the above purpose, the invention adopts the following technical scheme:

the environment-friendly artificial sponge lawn comprises a base layer and artificial grass filaments, wherein the base layer sequentially comprises a lawn bed layer, a gravel layer and a raw soil layer from top to bottom, and the artificial grass filaments are cut in the lawn bed layer.

Preferably, the original soil layer is wavy (the concave-convex design, the regular concave-convex structure is made according to the preset slope releasing requirement and the interval), the distance between the valley bottom and Gu Fengjian is 8-10m, the height difference between the valley bottom and the valley peak is 50-100mm, a plurality of drainage ditches are arranged on the valley bottom, so that the drainage water is conveniently collected, a filament geotextile isolation layer is paved in the drainage ditches, then a perforated corrugated pipe is paved, and the mesh window net is wrapped outside the corrugated pipe.

The corrugated pipe is connected with a drain pipe, and the drain pipe is connected with a reservoir buried outside the lawn field. The impounding reservoir is connected with the filtering device, so that the collected water reaches the standard of irrigation water, and is communicated with the external water receiving device, so that the water storage reservoir is convenient to use.

Preferably, the thickness of the plateau bed is 150-300mm, more preferably the plateau bed is a layer of sand, preferably medium coarse sand which is water washed and sieved.

The thickness of the gravel layer is 100-150mm, the gravel is preferably natural graded gravel, and the particle size of the gravel is preferably 3-5mm.

Preferably, the cutting depth of the artificial grass filaments is: 100-200mm, column spacing: 10-30mm, row spacing: 10-30mm, grass silk height: 10-30mm.

The invention also discloses a construction method of the environment-friendly sponge artificial turf, which comprises the following steps:

(1) Firstly, measuring a field required to be used for building a lawn, cleaning surface impurities, excavating earthwork, removing and leveling artificial impurities, settling and compacting plain soil, paving plain soil, rearranging terrain, spraying chemical control agents, building isolation retaining walls and the like;

(2) Digging a drainage ditch according to the unique drainage design requirement, and then paving a filament geotextile isolation layer in a full field; paving a perforated corrugated pipe along the dug drainage ditch, wrapping a screen window net with the aperture of 0.9mm by the corrugated pipe, and backfilling gravel in the drainage ditch; the corrugated pipe is connected with a field drain pipe, and the drain pipe is connected with a reservoir;

(3) Paving gravel: paving gravel with the thickness of 100-150mm, firstly paving and arranging the gravel by adopting a molding machine according to the design elevation and requirements after the gravel is transported to a feed inlet on one side of a site, and not using heavy vehicles for transportation, leveling by adopting a laser leveling instrument, and adjusting the paving thickness according to the gradient requirements of the drainage concave-convex design, wherein the thickness of at least 5cm from the highest point of the concave-convex design to the surface of the gravel layer is ensured;

(4) Paving sand: paving sand with the thickness of 150-300mm, and firstly paving the sand by adopting a molding machine after the sand is transported to a feed inlet at one side of a site, so that the sand cannot be transported by using a heavy truck; then adopting a modeling land leveler and a sand raking machine to carry out fine sand surface modeling by combining a laser leveler so as to meet the leveling requirement;

(5) Building a reservoir: building a reservoir with a certain capacity outside the lawn field and matching with a filtering device so as to ensure that the collected water reaches the standard of irrigation water;

(6) Cutting grass silk: cutting the pre-selected grass filaments into the lawn bed sand layer by using a grass filament cutting machine.

Firstly, the invention maintains various advantages of the traditional artificial lawn, and on the basis, the invention has the following advantages:

(1) The construction process of the permeable foundation reduces the construction difficulty and cost, eliminates the postharvest caused by hardening, and is more environment-friendly in construction of the non-hardened permeable foundation.

(2) The environmental pollution problems of traditional artificial turf back glue, glue adhesion, rubber particles and the like are avoided.

(3) Greatly reduced the risk of sportsman injured, the water permeability basis accessible operation of watering reduces the influence that removes artificial turf static, high temperature etc. and bring.

(4) The concept of a sponge body is realized, namely, the reasonable collection and reutilization of the redundant water is realized. The collected water can be used for site watering maintenance and can also be used for other irrigation watering.

(5) The unique concave-convex drainage design has the water permeability speed of more than 600mm/h, reduces the pressure of waterlogging, and can realize the collection, storage and reutilization of water under the level of heavy rain (15-29.9 mm in 12-hour rainfall and 25-49.9 mm in daily rainfall) and even heavy rain (30-69.9 mm in 12-hour rainfall and 50-99.9 mm in daily rainfall).

(6) Because the foundation is built according to the natural grass foundation, the field can be quickly changed into true and false mixed planting or natural grass field by adopting a certain technical means according to the actual situation.

Drawings

FIG. 1 is a schematic view of the structure of an environment-friendly sponge artificial turf of the invention;

fig. 2 is a schematic diagram of the overall structure of the sponge grass.

In the figure, 1-original soil layer; 2-gravel layer, 3-plateau bed layer; 4-drainage ditches; 5-bellows; 6-artificial grass filaments; 7-a drain pipe; 8-a reservoir; 9-a filtration device; 10-water receiving device.

Detailed Description

The present invention will be described in detail with reference to specific examples. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

As used throughout the specification and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description hereinafter sets forth a preferred embodiment for practicing the invention, but is not intended to limit the scope of the invention, as the description proceeds with reference to the general principles of the description. The scope of the invention is defined by the appended claims.

Referring to fig. 1 and 2, an environment-friendly sponge artificial turf is composed of a foundation layer and artificial grass filaments 6, wherein the foundation layer sequentially comprises a turf bed layer 3, a gravel layer 2 and a raw soil layer 1 from top to bottom, and the artificial grass filaments 6 are cut in the turf bed layer 3.

The original soil layer 1 is wavy, the transverse distance between the valley bottom and the valley peak is 8-10m, the height difference between the valley bottom and the valley peak is 50-100mm, a plurality of drainage ditches 4 are formed in the valley bottom, so that the drainage ditches are convenient for collecting the infiltration water, a filament geotextile isolation layer is paved in each drainage ditch 4, then a perforated corrugated pipe 5 is paved, and a screen window net is wrapped outside the corrugated pipe 5.

The corrugated pipe 5 is connected with a drain pipe 7, and the drain pipe 7 is connected with a reservoir 8 buried outside the lawn field. The reservoir 8 is connected with the filtering device 9, so that the collected water reaches the standard of irrigation water, and is communicated with the external water receiving device 10, so that the water collecting device is convenient to use.

The thickness of the lawn bed layer is 150-300mm, the lawn bed layer is a sand layer, and the sand is medium coarse sand which is washed and sieved by water.

Depth of artificial grass skewers inserted into the lawn bed: 100-200mm, column spacing: 10-30mm, row spacing: 10-30mm, grass silk height: 10-30mm.

The construction method of the environment-friendly sponge artificial turf comprises the following steps:

1. Foundation layer construction

(1) Measurement: and measuring and paying off according to the requirements of each field area of the design drawing, checking and calibrating the measuring instrument before paying off and piling, ensuring the accuracy of the measuring instrument, and rechecking once again after the first measuring work is finished, thereby ensuring the accuracy and reliability of the measuring result.

(2) Clearing the table: the method comprises the steps that machines such as a digging machine, a loading machine and a transport vehicle are adopted to comprehensively remove trees, stones, telegraph poles, sundries and the like in a field according to measured paying-off data; when the underground public facilities such as cables, signal wires and the like are cleared, whether the underground public facilities exist or not is definitely determined, and if the underground public facilities exist, the public facilities should be removed and shifted by professional staff in a matching way; and transporting the removed sundries to a designated position.

(3) Excavating earthwork: and excavating earthwork by adopting machines such as a bulldozer, an excavator, a loader, a transport vehicle and the like according to the design elevation of the earthwork construction drawing, and transporting the excavated residual soil to a designated position.

(4) Removing and flattening artificial sundries: and (3) manually checking and cleaning the tree roots, sundries and the like which are not cleaned mechanically, and manually rough and smooth the sites after cleaning.

(5) Drain concave-convex shape: the original soil layer is further excavated and filled with earthwork according to the preset layout and slope placing requirements and intervals to form regular concave-convex shapes with design requirements, the transverse interval between the valley bottom and the valley peak is 8-10m, and the height difference is 50-100mm (namely, the gradient is 5-10 per mill).

(6) Settling and compacting plain soil: tamping the basic plain soil for a plurality of times by adopting a water sedimentation mode, a ramming machine mode, a large-scale road roller mode and the like; and (5) carrying out field leveling by adopting a molding machine according to the measured point elevation.

(7) Paving plain soil: in order to ensure the quality of the foundation layer, after the earthwork is completed, a plain soil layer with the thickness of 100mm is paved, and finally, the elevation of the foundation of the field reaches the design requirement; when the plain soil is paved, a digging machine, a transport vehicle, a loading machine and a molding machine are adopted to perform paving.

(8) And (3) terrain rearrangement: tamping again by adopting modes such as water sedimentation, a tamping machine, a large road roller and the like for multiple times; the equipment such as a molding machine, a molding land leveler, a laser leveling instrument and the like is adopted to conduct land rearrangement according to design requirements, and the work surface which is finally required to be finished on the land with strict flatness requirements such as a football field reaches 3-5 per mill of slope placement, and the error of a 3m ruler is 10mm; compaction factor required to reach 0.95 and passed professional detection.

(9) Chemical control: spraying chemical control agents to chemically seal weeds, tree roots and the like; in order to ensure the uniformity and effect of spraying, crisscross spraying is adopted, and the dilution times and the spraying amount of the medicament are adopted.

(10) Building an isolation retaining wall: taking a football field as an example, an isolation retaining wall is built along the peripheral edge line of the buffer area. The method can adopt various modes such as brick mixing, sand cement and the like, but the requirements of corresponding design indexes are met. And the isolation retaining wall is required to be put down according to the design requirement.

(11) Spray irrigation installation (reserved or installed if needed): digging a spray irrigation pipe ditch according to a spray irrigation design drawing and paving corresponding spray irrigation pipelines; the excavated sprinkling irrigation pipe ditch should follow the requirements of design gradient, depth, width and the like; when the pipe bottom is paved, the artificial plain soil at the pipe bottom is leveled, so that the pipe bottom is prevented from being suspended; when the pipe ditch is backfilled, the pipe ditch should be tamped in layers, and sundries such as stones and the like cannot be found in 300mm around the pipe.

(12) Digging a blind calandria ditch and paving geotextile: digging drainage ditches at the concave-convex valley bottoms according to the drainage design requirement; then 250g/m ² long-filament geotextile isolating layers are paved in the whole field, the drain ditch is partially paved by taking care of being attached to the ditch bottom and the ditch wall, the overlapping part of the geotextile joint is more than or equal to 200mm, and the joint is manually folded after being fixed by adopting U-shaped buckles every 2 meters.

(13) And (5) laying blind rows: paving HDPE110 perforated corrugated pipes along the dug blind ditches, wrapping screen window meshes with the aperture of 0.9mm by the corrugated pipes, and backfilling natural graded gravels with the grain diameter of 0.3-0.5cm in the blind ditches; the gravel is required to be basalt or the same material, has hardness, has water chestnut, has strong stability and needs off-site secondary water washing; the blind drain pipe is connected with a ground drain ditch, and the drain ditch is connected with a reservoir.

(14) Laying bare copper wires: paving bare copper wires with the specification requirement of 450/750V rated voltage and 6mm ² along a bricked isolation belt and all drainage pipelines on a football field; when the corrugated pipe is paved, the inner edge of the isolation retaining wall and the drainage corrugated pipe are tightly attached, and the tail end of the corrugated pipe is folded back by 200mm; the connection should ensure firmness.

(15) And (3) gravel paving: paving natural graded gravels with the grain diameter of 100-150mm and the grain diameter of 3-5 mm; the paving thickness is adjusted according to the gradient requirement of the concave-convex design of the drainage, and the thickness from the highest point of the concave-convex design to the surface of the gravel layer is at least 5 cm; the gravel is required to be basalt or the same material, has hardness, has water chestnut, has strong stability and needs off-site secondary water washing; in the same first layer of gravel paving process, after the gravel is transported to a feed inlet at one side of a site, firstly paving and terrain finishing are carried out by adopting a molding machine according to the design elevation and requirements, and heavy vehicles are not required to be used for transportation; then leveling by adopting a laser leveling instrument; rolling by using a vibration road roller; the final working surface meets the requirements of gradient 3 per mill, 3 meter ruler error 10mm and laying height; trimming is necessary until the requirements are met.

(16) And (3) sand paving: paving water-washed sand with the thickness of 150-300mm and meeting the building standard; in the same gravel layer construction process, after sand is transported to a feed inlet at one side of a site, a molding machine is adopted to pave, and heavy vehicles are not required to be used for transportation; then adopting a modeling land leveller and a sand raking machine to carry out sand surface fine modeling by combining a laser leveller, and finally requiring the finished working surface to reach the requirements of 3 per mill gradient, 10mm error of a 3 meter ruler and laying height; trimming is necessary until the requirements are met.

(17) Building a reservoir: according to the design requirement, a reservoir with a certain capacity is built and matched with a certain filtering device, so that the collected moisture reaches the standard of irrigation water.

2. Cutting of grass filaments

Cutting the preselected artificial grass filaments (special grass filaments with environmental protection, good uprightness and recovery properties) into a lawn bed sand layer by adopting a special grass filament cutting machine (an independently developed grass planter, see Chinese patent application publication No. CN 106012754B), wherein the specific parameters are as follows: depth: 100-200mm, column spacing: 10-30mm, row spacing: 10-30mm, grass silk height: 10-30mm, grass silk density: can be regulated (the cutting density reaches the requirements of use and lawn viewing).

3. Plateau surface treatment

After the cutting of the grass filaments is finished, adopting a roller press and a grass filament carding machine, combining with a certain water spraying (the construction foundation is a water permeability foundation, collected water can be adopted for sprinkling irrigation) operation and other measures, so that the grass filaments are smoother and more compact, and the requirements of the sports performance indexes such as hardness, torsion, rolling distance, rebound force and the like are met.

While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims

1. The construction method of the environment-friendly sponge artificial turf is characterized in that the artificial turf consists of a foundation layer and artificial grass filaments, the foundation layer sequentially comprises a turf bed layer, a gravel layer and a raw soil layer from top to bottom, and the construction method comprises the following steps:

(1) Firstly, measuring a field required to be used for building a lawn, cleaning surface impurities, excavating earthwork, removing and leveling artificial impurities, settling and compacting plain soil, paving plain soil, rearranging terrain, spraying chemical control agents and building isolation retaining walls;

(2) Digging a drainage ditch according to drainage design requirements, and then paving a filament geotextile isolation layer in a whole field; paving a perforated corrugated pipe along the dug drainage ditch, wrapping a screen window net with the aperture of 0.9mm by the corrugated pipe, and backfilling gravel in the drainage ditch; the corrugated pipe is connected with a field drain pipe, and the drain pipe is connected with a reservoir;

(3) Paving gravel: paving gravel with the thickness of 100-150mm, firstly paving and tidying the gravel by adopting a molding machine according to the design elevation and requirements after the gravel is transported to a feed inlet on one side of a site, and not using heavy vehicles for transportation, leveling by adopting a laser leveling instrument, and adjusting the paving thickness according to the gradient requirements of the original soil layer drainage concave-convex design to ensure that the highest point of the concave-convex design is at least 5cm thick to the surface of the gravel layer;

(6) Cutting grass silk: cutting the preselected artificial grass filaments into a lawn bed by a grass filament cutting machine.

2. The construction method according to claim 1, wherein the original soil layer is wave-shaped, the transverse distance between the valley bottom and the valley peak is 8-10m, the height difference between the valley bottom and the valley peak is 50-100mm, and a plurality of drainage ditches are arranged on the valley bottom.

3. The method of construction according to claim 1 wherein the reservoir is connected to a filter means and is in communication with an external water receiving means.

4. The method of construction of claim 1 wherein the plateau bed has a thickness of 150-300mm.

5. The method of construction of claim 1 wherein the plateau bed is a sand layer which is water washed screened medium coarse sand.

6. The construction method according to claim 1, wherein the thickness of the gravel layer is 100-150mm, the gravel is natural graded gravel, and the particle size of the gravel is 3-5mm.

7. The method of claim 1, wherein the artificial grass filaments are cut to a depth: 100-200mm, column spacing: 10-30mm, row spacing: 10-30mm, grass silk height: 10-30mm.