A construction method for converting a natural grass soccer field into an artificial grass soccer field
By transforming a real grass soccer field into an artificial grass soccer field, the techniques of removing the root layer, rotary tilling and mixing with medium-coarse sand, and filling with permeable blind ditches were adopted. This solved the problems of time-consuming and labor-intensive construction and poor drainage, achieving efficient and low-cost construction and good drainage effect, making it suitable for switching between real grass and artificial grass.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGZHOU XINGWEI GRASS IND CO LTD
- Filing Date
- 2026-02-10
- Publication Date
- 2026-05-29
Smart Images
Figure CN122105932A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sports field construction technology, specifically to a construction method for converting a real grass football field into an artificial grass football field. Background Technology
[0002] Currently, many primary and secondary school soccer fields are made of real grass. However, due to substandard construction practices in the early stages, the root layer is often made of clay or loam, leading to a hard, compacted surface during the dry season and a soft, impermeable surface during the rainy season. This results in severe water accumulation and poor grass growth, significantly impacting teaching. Furthermore, real grass requires maintenance, incurring substantial annual costs. These issues have become major headaches for schools, so these real grass soccer fields are often converted to artificial turf within two years. The traditional conversion method involves completely excavating the field, constructing a gravel layer, a water-stabilized layer, a concrete layer, and then laying artificial turf. This process is time-consuming, labor-intensive, and expensive, and the surface hardness may not even meet the required standards. The existing technology CN 2021109037779, "A construction method for converting a natural grass football field into an artificial grass football field," also has its drawbacks. First, the blind drain in the middle of the field has limited pressure resistance, and the need to protect the blind drain makes backfilling of the plastic permeable soft base layer difficult. Second, the plastic permeable soft base layer material needs to be fabricated off-site, which is costly and occupies construction space. Third, since football fields are typically turtle-back shaped, a large amount of rainwater is drained from the surface, and rainwater in the middle of the field quickly drains to the perimeter, resulting in greater drainage pressure at the perimeter. Since the drainage system only has one drainage hole every 5 meters, the vertical drainage efficiency between the drainage holes is low, and rainwater cannot be drained away in time, causing many particles of the artificial turf surface to be washed from the surface to the surrounding drainage ditches. Fourth, the construction process is complex, the construction period is long, and the cost is high. Summary of the Invention
[0003] The purpose of this invention is to provide a construction method for converting a real grass football field into an artificial grass football field. This construction method has the characteristics of high construction efficiency, low cost and good drainage.
[0004] The objective of this invention is achieved through the following technical solution: A construction method for converting a real grass soccer field into an artificial grass soccer field includes the following steps: Step 1. Remove the existing turf and root system layers, and level the base layer of the site to make it resemble a turtle's back. Step 2. Backfill the surface of the base layer with medium-coarse sand and compact it to form a medium-coarse sand layer of uniform thickness; Step 3. Use a rotary tiller to till the medium-coarse sand layer to mix the medium-coarse sand in the layer with the clay or loam in the base layer. The purpose of this step is to solve the technical problem of the difficulty in compacting clean medium-coarse sand. By vertically mixing the site with a rotary tiller, the clay or loam in the bottom layer can be mixed with the medium-coarse sand in the top layer, which can effectively improve the granular structure of the medium-coarse sand, making the site easier to compact and shape. Moreover, this mixing method can achieve the effect of increasing mud content and decreasing porosity from top to bottom of the medium-coarse sand layer, making the surface hardness, water infiltration rate, and stability of the site controllable.
[0005] Step 4. After rotary tillage, the site is finely leveled and compacted to adjust the surface hardness so that the surface hardness is ≤130. Step 5. Excavate blind drains and fill them with gravel and medium-coarse sand: Excavate an edge blind drain along the inner side of the drainage ditches around the site. Excavate multiple inner blind drains along the perimeter of the site. The inner blind drains are perpendicular to the edge blind drains, with one end connected to the edge blind drain and the other end extending inwards for a predetermined length. The inner blind drains and the edge blind drains are collectively referred to as blind drains. Lay permeable geotextile in the blind drains, leaving a certain width of permeable geotextile. After backfilling the blind drains with gravel, a gravel layer is formed. Fold the permeable geotextile, leaving a certain width, to cover the entire gravel layer. Finally, backfill the blind drains with medium-coarse sand to form a medium-coarse sand layer. Step 6. Lay artificial turf on the leveled and compacted ground and fill it with quartz sand and rubber granules.
[0006] Furthermore, in step 1, the total thickness of the original lawn layer and root system layer removed is 80-100mm.
[0007] Furthermore, in step 1, the slope of the base layer is 0.3-0.5%.
[0008] Furthermore, in step 2, the thickness of the medium-coarse sand layer is 50-70 mm.
[0009] Furthermore, in step 3, the rotary tiller's tillage depth is twice the thickness of the medium-coarse sand layer to ensure that the thickness ratio of the mixed medium-coarse sand and the clay or loam of the base layer is 1:1.
[0010] Furthermore, in step 4, the slope of the site surface is ≤0.5%, and the flatness of the site surface is ≤10mm.
[0011] Furthermore, in step 5, the blind drain has a width of 200mm, a depth of 150mm, a gravel layer thickness of 100mm, and a medium-coarse sand layer thickness of 50mm.
[0012] Furthermore, in step 5, a water passage hole is provided between the blind ditch at the edge of the field and the open drainage ditch, and multiple water passage holes are provided, with one water passage hole opened every 2000mm; the length of the blind ditch in the field is 5000mm, and the distance between adjacent blind ditches in the field is 4000mm.
[0013] Furthermore, in step 6, the specific method for laying artificial turf and filling it with quartz sand and rubber granules is as follows: spread out and align a roll of artificial turf that is 4 meters wide, glue all the turf strips together into a whole piece, implant functional lines, then fill it with quartz sand using a sand covering machine, brush the quartz sand down with a grass brushing machine and brush the grass fibers up, then fill it with rubber granules using a sand covering machine, brush the rubber granules down with a grass brushing machine and brush the grass fibers up, until the height of the grass meets the requirements.
[0014] The beneficial effects of this invention are: The construction method described in this application has the advantages of high construction efficiency, low cost and good drainage. By simplifying the construction process, it improves construction efficiency, and by reusing the clay or loam of the base layer, it reduces construction costs and facilitates its widespread application.
[0015] Furthermore, using the construction method described in this application, the completed artificial turf football field has the advantage of good drainage. By densely opening holes around the perimeter and creating blind drains, the field has a strong drainage capacity, avoiding the problem of rainwater washing away the surface rubber particles, thus meeting the needs of football field renovation.
[0016] Finally, this construction method does not substantially alter the original site structure and optimizes the original root system layer. The optimized root system layer is more suitable for planting real grass. If necessary, only the artificial turf surface layer needs to be removed, and real grass can be directly laid. This technology enables the switching between real grass and artificial turf. Attached Figure Description
[0017] Figure 1 This is a flowchart of the construction method of the present invention; Figure 2 This is a layout diagram of the drainage ditches and blind drains of the present invention.
[0018] In the diagram: 1. Drainage ditch; 2. Blind ditch at the edge of the site; 3. Blind ditch within the site; 4. Water passage hole. Detailed Implementation
[0019] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.
[0020] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand the advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.
[0021] like Figure 1 As shown, a construction method for converting a real grass soccer field into an artificial grass soccer field includes the following steps: Step 1. Attach a bucket sleeve to the excavator to excavate smoothly, remove the original grass and root layer, and level the base layer of the site to make it resemble a turtle's back. The total thickness of the original grass and root layer removed is 90mm, and the slope of the base layer is 0.4%.
[0022] Step 2. Backfill the surface of the base layer with medium-coarse sand and spread it evenly to form a medium-coarse sand layer of uniform thickness; the thickness of the medium-coarse sand layer is 60mm.
[0023] Step 3. Use a rotary tiller to till the medium-coarse sand layer to mix the medium-coarse sand in the medium-coarse sand layer with the clay or loam in the base layer; the rotary tiller should be 120mm deep to ensure that the thickness ratio of the mixed medium-coarse sand and the clay or loam in the base layer is 1:1.
[0024] The purpose of this step is to solve the technical problem of compacting clean medium-coarse sand. By vertically mixing the site with a rotary tiller, the bottom layer of clay or loam can be mixed with the top layer of medium-coarse sand, which can effectively improve the granular structure of the medium-coarse sand, making the site easier to compact and shape. Moreover, this mixing method can achieve the effect of increasing mud content and decreasing porosity from top to bottom of the medium-coarse sand layer, making the surface hardness, water infiltration rate, and stability of the site controllable.
[0025] Step 4. After rotary tillage, the site is finely leveled and compacted, and the surface hardness is adjusted to be ≤130; the slope of the site is ≤0.5% and the flatness of the site is ≤10mm.
[0026] Step 5. Excavate blind drains and fill them with gravel and medium-coarse sand: Excavate a site edge blind drain 2 along the inner side of the open drainage ditch 1 around the site. Excavate multiple site-internal blind drains 3 along the site perimeter. The site-internal blind drains 3 are perpendicular to the site edge blind drain 2. One end of the site-internal blind drain 3 connects to the site edge blind drain 2, and the other end extends inwards for a predetermined length, such as... Figure 2 As shown; the blind ditch 3 within the site and the blind ditch 2 at the edge of the site are collectively referred to as blind ditches. A permeable geotextile is laid in the blind ditch, with a certain width of permeable geotextile reserved. After backfilling with gravel in the blind ditch, a gravel layer is formed. The permeable geotextile with a certain width reserved is folded over to wrap the entire gravel layer. Finally, medium-coarse sand is backfilled in the blind ditch, compacted with a small road roller, and then the site is leveled and smoothed with a sand-dragging net to form a complete medium-coarse sand layer.
[0027] The blind ditch is 200mm wide and 150mm deep, with a 100mm thick gravel layer and a 50mm thick medium-coarse sand layer. Multiple water passages 4 are provided between the edge blind ditch 2 and the open drainage ditch 1, spaced 2000mm apart. The length of the blind ditch within the site is 5000mm, and the distance between adjacent blind ditches within the site is 4000mm.
[0028] To prevent fine sand and silt from seeping into the gravel and affecting the drainage efficiency of the gravel blind drain, a permeable geotextile should be laid before backfilling the gravel, with sufficient width reserved. After the gravel is backfilled, the reserved permeable geotextile should be folded up and covered on top of the gravel.
[0029] Step 6. Lay artificial turf on the leveled and compacted ground and fill it with quartz sand and rubber granules.
[0030] Specifically, the method for laying artificial turf and filling it with quartz sand and rubber granules is as follows: The artificial turf grass fibers are 45mm high and 4 meters wide. Spread out a 4-meter wide roll of artificial turf and align it. Glue all the turf fibers together into a whole piece, insert functional lines, then fill it with quartz sand using a sand-covering machine. Use a brushing machine to brush the quartz sand down and brush the grass fibers up. The quartz sand filling thickness is about 15mm, and the exposed grass height is about 30mm. Then fill it with rubber granules using a sand-covering machine, and use a brushing machine to brush the rubber granules down and brush the grass fibers up. The rubber granule filling thickness is about 15mm, and the exposed grass height is about 15mm.
[0031] Working Principle: The construction method for converting a real grass soccer field into an artificial turf soccer field, as described in this invention, has the advantages of high construction efficiency, lower cost, and good drainage. By simplifying the construction process, construction efficiency is improved, and by reusing the base layer of clay or loam, construction costs are reduced, facilitating widespread application. Furthermore, the completed artificial turf soccer field has excellent drainage. Through dense perforations around the perimeter and the creation of blind drains, the field has strong drainage capacity, preventing rainwater from eroding the surface rubber particles and meeting the needs of soccer field conversion. Finally, this construction method does not substantially alter the original site structure and optimizes the original planting soil, making it more suitable for planting real grass. If necessary, only the artificial turf surface layer needs to be removed, and real grass can be directly laid. This technology allows for the switching between real and artificial turf.
[0032] In the description of this invention, it should be understood that the terms "middle," "length," "upper," "lower," "front," "rear," "vertical," "horizontal," "inner," "outer," "radial," "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0033] In this invention, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first and second features, or indirect contact with the first and second features through an intermediate medium. "A plurality of" means at least two, such as two, three, etc., unless otherwise expressly and specifically limited.
[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0035] The above description is merely illustrative of the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made without creative effort within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A construction method for converting a real grass football field into an artificial grass football field, characterized in that, Includes the following steps: Step 1. Remove the existing turf and root system layers, and level the base layer of the site to make it resemble a turtle's back. Step 2. Backfill the surface of the base layer with medium-coarse sand and compact it to form a medium-coarse sand layer of uniform thickness; Step 3. Use a rotary tiller to till the medium-coarse sand layer to mix the medium-coarse sand in the medium-coarse sand layer with the clay or loam in the base layer; Step 4. After rotary tillage, the site is finely leveled and compacted to adjust the surface hardness so that the surface hardness is ≤130. Step 5. Excavate blind drains and fill them with gravel and medium-coarse sand: Excavate an edge blind drain along the inner side of the drainage ditches around the site. Excavate multiple inner blind drains along the perimeter of the site. The inner blind drains are perpendicular to the edge blind drains, with one end connected to the edge blind drain and the other end extending inwards for a predetermined length. The inner blind drains and the edge blind drains are collectively referred to as blind drains. Lay permeable geotextile in the blind drains, leaving a certain width of permeable geotextile. After backfilling the blind drains with gravel, a gravel layer is formed. Fold the permeable geotextile, leaving a certain width, to cover the entire gravel layer. Finally, backfill the blind drains with medium-coarse sand to form a medium-coarse sand layer. Step 6. Lay artificial turf on the leveled and compacted ground and fill it with quartz sand and rubber granules.
2. The construction method for converting a real grass football field into an artificial grass football field as described in claim 1, characterized in that: In step 1, the total thickness of the original lawn layer and root system layer removed is 80-100mm.
3. The construction method for converting a real grass football field into an artificial grass football field as described in claim 1, characterized in that: In step 1, the slope of the base layer is 0.3-0.5%.
4. The construction method for converting a real grass football field into an artificial grass football field as described in claim 1, characterized in that: In step 2, the thickness of the medium-coarse sand layer is 50-70 mm.
5. The construction method for converting a real grass football field into an artificial grass football field as described in claim 1, characterized in that: In step 3, the rotary tiller's tillage depth is twice the thickness of the medium-coarse sand layer to ensure that the thickness ratio of the mixed medium-coarse sand and the clay or loam of the base layer is 1:
1.
6. The construction method for converting a real grass football field into an artificial grass football field as described in claim 1, characterized in that: In step 4, the slope of the site surface is ≤0.5%, and the flatness of the site surface is ≤10mm.
7. The construction method for converting a real grass football field into an artificial grass football field as described in claim 1, characterized in that: In step 5, the blind drain has a width of 200mm, a depth of 150mm, a gravel layer thickness of 100mm, and a medium-coarse sand layer thickness of 50mm.
8. The construction method for converting a real grass football field into an artificial grass football field as described in claim 7, characterized in that: In step 5, a water passage hole is provided between the blind ditch at the edge of the field and the open drainage ditch, and multiple water passage holes are provided, with one water passage hole every 2000mm; the length of the blind ditch in the field is 5000mm, and the distance between adjacent blind ditches in the field is 4000mm.
9. The construction method for converting a real grass football field into an artificial grass football field as described in claim 1, characterized in that: In step 6, the specific method for laying artificial turf and filling it with quartz sand and rubber granules is as follows: spread out and align a roll of artificial turf that is 4 meters wide, glue all the turf strips together into a whole piece, insert functional lines, then fill it with quartz sand using a sand covering machine, brush the quartz sand down with a grass brushing machine and brush the grass fibers up, then fill it with rubber granules using a sand covering machine, brush the rubber granules down with a grass brushing machine and brush the grass fibers up, until the height of the grass meets the requirements.