KR101816745B1 - Shock-absorbing structure for planting grass and construction method thereof - Google Patents

Abstract

The present invention relates to a buffer structure for planting grass and a construction method thereof. The buffer structure is located in the lower part of a grass planting layer and the upper part of a soil layer and holds a certain amount of rainwater at the time of rainfall to delay rapid penetration to the lower soil layer. Some of rainwater is drained through an elastic drain groove which acts as a drain and expands and shrinks depending on climate change to reduce the flooding of the grass planting layer and the loss of the lower soil layer. Normally, the buffer structure provides buffer power to the grass planting layer and utilizes stored water as a water source. The buffer structure for planting grass comprises a water storage buffer material (1) and an elastic fastening member (2). The water storage buffer material (1) holds and stores some of rainwater during rainfall as much as the storage capacity or drains the held rainwater to the lower part of the soil layer while buffering and supporting the load of a grass planting layer (4), and includes: a plurality of elastic drain grooves (11) acting as a drain for draining some of rainwater laterally and expands and shrinks depending on climate change; and a plurality of cut-out fastening parts (12) formed at regular intervals in a portion where the elastic drain grooves (11) are not formed. The elastic fastening member (2) connects the adjacent water storage buffer materials while fixing the water storage buffer material to a soil layer (5) through the cut-out fastening part (12).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a shock absorbing structure for a grass planting material,

The present invention relates to a buffer structure for grass planting and a method of constructing the same, and more particularly, to a grass planting material layer composed of natural grass or artificial grass cultivated for greenery for a playground, rooftop and mountain slope, The present invention relates to a buffer structure and a method of constructing a buffer structure in which a predetermined amount of rainwater is stored and drained so as to reduce the amount of rainwater and a stored buffer material is provided for the grass material layer and stored rainwater is used as a water supply source.

In recent years, a lot of greenery construction work has been carried out to prevent soil loss by planting lawns on playgrounds, parks, or sloping mountain slopes, which were recently constructed with sand, to prevent dust from flying.

These green zones are formed to have a high gradient in the central part for drainage in the case of rainy weather and to have a slight gradient in the periphery, and a drainage hole is formed in the perimeter to make the rainwater flow, or the lower soil layer in which the grass is planted, Make sure that the bottom is well permeated.

However, when rainfall continues and the rate of permeation to the soil layer is slowed down and the amount of water is increased, a waterway is formed in the lower soil layer and the soil is lost.

This soil loss can cause a problem that the surface of the lawn material layer becomes uneven due to the puddle due to the sinking of the grass planting part, or a cavity is formed in the soil layer below the lawn, thus causing a safety accident.

In addition, if the water in the depressed pit or the cavity is rotten, odor is generated and bacteria and mosquito larvae are propagated, which is harmful to hygiene.

One of the ways to solve the above problems is to install a lot of drainage holes. However, the drainage hole usually needs to be constructed by pouring concrete or steel bar using a formwork, or constructing a stainless steel pipe or a reinforced concrete pipe to the soil layer. There is a problem in that it is not easy to construct as much as necessary in a wide range of playgrounds, parks, mountain slopes, and the like, rather than a fixed building or a green area surrounding the structure.

A drainage structure structure of a playground according to the prior art is disclosed in Korean Patent Registration No. 10-1309827 (a playground drainage structure using a line and a construction method thereof). This technique relates to a playground drainage structure and a construction method that can provide elasticity and smooth drainage while maintaining the hardness of the athletic field index as it is in the prior art. A plurality of pores of a size of about 1 mm; A drainage trough embedded in the drainage layer and having a plurality of water holes formed on an outer circumferential surface thereof and a drainage passage formed therein; A lower cushion layer laminated on the drainage layer and the drainage troughs and made of a water permeable and elastic material to provide an elastic force; And a surface layer stacked on the upper portion of the lower cushion layer and exposed to the outside, wherein the drain trough is buried along the line at a lower portion of the line, and the upper surface of the drain trough is located at the same height as the upper surface of the drain layer And water that is buried in the drainage layer and reaches the drainage layer flows into the drainage trench through the water hole formed on the drainage trench.

However, in order to construct the drainage trench, the embankment layer of the undersurface of the lower surface of the ground is installed in a manner that excavates an area larger than that of the drainage trench, and then drains the drainage trench after installing the drainage trench. Due to the interference of the drainage trough, it is impossible to compaction by the pressure applied at the initial compaction, so that the water seeped in the case of rain can be repaired. .

On the other hand, the conventional techniques including the above-mentioned technology have a disadvantage that drainage of a wide range of green space and soil loss can not be prevented because the drainage can be performed only through a part of the green space.

In addition, if rainwater falls on the lawn material layer, if there is no separate water storage space, it easily escapes to the lower soil layer. In this case, if the climatic conditions are high and the temperature is high or the season is dry, the grass layer may become dry. If there is a person who inspects and manages the condition of the grass layer and the soil layer, it is not necessary. If it is not, the grass may dry if the roots of the planted natural grass have not fallen sufficiently into the soil layer. If the artificial grass is applied, The water is scattered by a person who is in motion and there is a disadvantage that it can be burned due to friction with artificial turf.

In addition, prior art techniques require compaction of the soil layer in multiple layers prior to application of the grass planting layer. In the case of green planting where the compaction is difficult or unattended, the grass planting layer has a low buffering power, Which can damage the knee of people who are damaged or exercised.

In addition, the conventional techniques have a disadvantage in that when the grass planting layer is applied, the grass planting layer may be pushed and damaged due to the external force due to low frictional force with the lower soil layer.

Therefore, there is a need to develop a technology that can solve the problem of soil depletion in the lower soil layer of the green space where natural or artificial grass is planted, the problem of drying of the soil layer, the problem of buffering power in the case of multi-

Korean Patent Registration No. 10-0876008 (Dec. 18, 2008) Korean Patent Registration No. 10-0579758 (2006.05.08.) Korean Registered Patent Publication No. 10-1055651 (Aug. 23, 2011) Korean Patent Registration No. 10-1040812 (Jun. 23, 2011)

The object of the present invention to solve the above-mentioned problems is to provide a method of controlling rainfall, which is located at a lower part of a grass planting layer and an upper part of a soil layer, , It is possible to reduce flooding of the grass planting layer and the loss of the lower soil layer by draining the water through the newly constructed shrinkage drainage grooves, and to provide the buffering force to the grass planting layer and to utilize the stored water as the water supply source .

Another object of the present invention is to provide a cushioning structure which is made of a stretchable deformation structure to prevent durability of the cushioning structure due to expansion or contraction due to climate change, and a method of constructing the cushioning structure.

Another object of the present invention is to provide a cushioning structure having a surface with a non-slip structure for preventing dulling of a grass planting layer due to an external force so as to improve durability, and a method of constructing the cushioning structure.

Another object of the present invention is to provide a cushioning structure having a stretchable shrinkage fastening member that can be easily connected to an adjacent unit buffer structure at an arbitrary interval or position while fixing the cushioning structure to a soil layer, And to provide a method of construction thereof.

In order to accomplish the above objects and to solve the conventional drawbacks of the present invention, some of the rainwater dropped during rainfall is stored or accumulated in the rainwater while buffering the load of the grass planting layer, A plurality of expansion / drainage grooves formed in such a manner as to serve as drainage for draining some rainwater laterally and to perform elastic expansion and contraction according to a change in climate, and a plurality of cutaway fastening portions formed at predetermined intervals in portions where the expansion / drainage grooves are not formed A moisture storage buffer material;

And a stretching and shrinkage fastening member passing through the cut-off fastening portion and connecting the adjacent water storage buffer materials while fixing the water storage buffer material to the soil layer.

According to a preferred embodiment of the present invention, the expansion and drainage groove may include a plurality of holes formed in a circumferential direction so as to drain the rainwater in one direction while blocking bottlenecks of the drainage flow caused by the inflow of rubble and / have.

In a preferred embodiment, the stretch drainage grooves are arranged in a lattice form on at least one side of the moisture storage buffer material so as to be stretchable.

In a preferred embodiment, the stretch drainage grooves may be configured to be symmetrical to the upper and lower surfaces of the moisture storage cushion material.

In a preferred embodiment, a waterproof layer coated with a waterproofing material may be formed on the inner surface of the expansion and drainage groove.

In a preferred embodiment, the upper surface of the moisture storage cushion material may be provided with a non-slip part embossed in a semi-circular shape, a column shape, a polygonal shape or a variety of raised protrusions arranged continuously.

In a preferred embodiment, the elastic shrinkable fastening member is composed of a fixed portion passing through the cut-off fastening portion to be embedded in the soil layer and an elastic connecting portion connecting the fastening portions inserted in the neighboring unit moisture storage buffer material, The elastic connecting portion is made of the same material as that of the moisture storage buffer material, and the elastic connecting portion is formed of a plurality of And a groove portion can be formed on both sides in the horizontal direction so as to facilitate the elastic expansion and contraction according to the temperature change and the incision.

According to another aspect of the present invention, there is provided a method of manufacturing a grass structure, comprising the steps of: preparing a buffer structure for lawn preparation;

And then planarizing the soil layer or the general soil layer, which has been applied to the multi-layered structure with a different layer of the material, without compaction or without compaction;

 And then continuously connecting the cushioning structure by an area required to form a green zone by using the stretching and shrinkage fastening member;

And inserting the through-hole drainage pipe along at least one of the plurality of equally-directionally extending / contracting drainage grooves formed in the buffer structure to be constructed.

In a preferred embodiment, the method further comprises the step of applying a natural or synthetic grass layer on the non-skid portion formed on the upper surface of the water storage buffer after the step.

In a preferred embodiment, the step of applying the natural or synthetic grass layer may further include the step of spraying silica or filler on the surface of the grass layer.

The cushioning structure according to the present invention having the above characteristics is located at the lower part of the grass planting layer and the upper part of the soil layer so that the rainwater is absorbed and stored at the time of rainfall to delay the rapid penetration to the lower soil layer, And a water discharge groove structure for preventing the buffer structure from breaking down due to the expansion / contraction behavior due to the climate change while serving as a drainage of rainwater over the lower part of the grass soil layer, It is advantageous to reduce the co-occurrence of the soil layer and to function as a water supply source while providing a buffering force to the lawn planting layer positioned at the upper part,

In addition, since the drain pipe is provided with a pipe in the new drainage drainage channel, it is advantageous to smooth drainage while preventing a bottleneck phenomenon from occurring due to interception of rubble and soil,

In addition, it has a slip prevention structure on the upper surface in order to prevent the sliding of the grass material layer,

In addition, it is possible to provide an easy-to-use structure for the construction and operation of a building by providing a stretch-and-groove fastening member having a structure that is easily connected at an arbitrary interval or position with a neighboring buffer structure while being stretched and shrunk according to climate change, Which is an advantageous invention having an advantage of improving the durability after construction, and which is highly expected to be used in industry.

1 is an exploded perspective view of a cushioning structure according to an embodiment of the present invention,
FIG. 2 is an exemplary view showing a telescopic locking member according to an embodiment of the present invention,
3 is an exemplary view showing a coupling structure of a buffer structure according to an embodiment of the present invention,
FIG. 4 is an exemplary view showing a grass planting layer applied to a buffer structure according to an embodiment of the present invention,
5 is a flowchart illustrating a construction procedure according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

FIG. 1 is an exploded perspective view of a cushioning structure according to an embodiment of the present invention, FIG. 2 is an illustration showing an elastic shrinkable fastening member according to an embodiment of the invention, FIG. 3 is a cross- FIG. 4 is an exemplary view showing a grass planting layer applied to a buffer structure according to an embodiment of the present invention. FIG.

As shown in the figure, the buffer structure according to the present invention largely cushions the load of the grass planting layer (4) while buffering some of the rainwater at the time of rainfall, A water storage buffer material (1) for draining water only laterally out of the storage capacity while draining laterally through a plurality of expansion / drainage grooves (11); And a stretch shrinkage fastening member 2 for fastening the moisture storage buffer material to the soil layer 5 and connecting adjacent moisture storage buffer materials.

In addition, a drainage pipe (3) for draining the rainwater in one direction can be installed in the expansion / drainage groove while blocking a bottleneck of a drainage flow caused by the inflow of rubble and gravel. The drainage pipe is connected to an unshown drainage channel, and a channel is formed in one direction to allow the rainwater to drain quickly.

Preferably, the moisture storage buffer material (1) is made of a water permeable soft synthetic resin material so that buffering power, water storage capacity and drainage performance are good. For this purpose, a polymer synthetic resin is foamed and synthesized, The water permeable material is in the form of a foam or a fibrous material. When the rainwater flows in from the upper part, it is permeated downward.

A synthetic resin such as a sponge in the form of urethane foam foamed with urethane may be prepared and used.

Since the water storage buffer material made of such a material has a shrinking expansion force which reacts with pressure, it can be manufactured by freely deforming the thickness according to the required water storage capacity and buffering power. For example, the water storage capacity and buffering force are increased when the thickness is made 2 to 5 cm rather than 1 cm.

The moisture storage buffer material having such a structure absorbs the flow rate of the stored rainwater and discharges only the rainwater exceeding the storage capacity so that the rainwater can be rapidly poured directly into the lower soil layer 5 without the water storage buffer material It is possible to reduce the loss of the soil caused by the formation of a water path in the soil layer 5 or the soil erosion phenomenon, thereby reducing the depression of the grass planting layer 4 and the cavitation of the lower soil layer 5. [

In addition, the rainwater stored in the water storage buffer material acts as a water supply source through the roots in case of natural grass, and in the case of artificial grass, it evaporates in accordance with the temperature change, thereby supplying moisture to the surface of artificial turf.

The synthetic drainage used in the expansion and contraction due to the temperature difference according to the climate change of the four seasons of the expansion and the drainage groove (11) is designed to prevent the thickness or the physical properties of the moisture storage buffer material from being damaged or swollen due to the thermal expansion or contraction Formed so as to extend in at least one side of the water storage buffer material and arranged in a lattice shape in the transverse direction in particular,

And is formed on at least one of the upper surface and the lower surface of the moisture storage buffer material so as to be elongated or contracted to improve the durability of the moisture storage buffer material. It is preferable that the expansion and drainage grooves are symmetrically formed on the upper and lower surfaces of the water storage and damping material because they can exert a uniform stretching force or shrinkage force in the expansion and contraction behavior. If the expansion and contraction drainage grooves are formed vertically symmetrically, the drainage pipes are located only in the new expansion drainage grooves. The reason for this is that when installed in the lower extension / drainage groove, it can fall into the lower part.

In addition, the expansion and drainage groove 11 according to the present invention is used not only for the expansion and contraction behavior but also as a drainage channel serving as a drainage, so that a constant flow rate is drained laterally during rainfall to prevent flooding of the grassyard material layer 4 To this end, a waterproofing layer 111 is formed by coating a waterproofing material having elasticity such as silicone on the inner side surface of the expansion / drainage groove 11.

The rainwater flowing into the watertight layer is not absorbed by the moisture storage buffer, and flows down to the water drainage path not shown along the drainage layer, thereby reducing the rainwater drained into the lower soil layer 5.

In addition, since the waterproof layer is made of a silicone material, the expansion and contraction drain groove has an advantage that the moisture storage buffer material can improve the durability according to the temperature change depending on the temperature. However, the water storage buffer material can cause the water storage buffer material to have a relatively reduced thickness Another durability problem, such as breakage or cutting, can be solved to increase overall durability.

In this case, the thickness of the waterproof layer is not particularly limited. It is sufficient to coat only the opening of the water storage buffer material formed on the surface to prevent the flow of the flow of the stretch drainage groove from being absorbed into the inside without blocking the flow. The reason for this is that if the coating is too thick, there may be a desorption phenomenon due to the difference in materials during shrinkage deformation of the moisture storage buffer material. After the foam molding process of the water storage and damping material is completed, the coating method may be sprayed by spraying along the part of the expansion / drainage groove (11) or by flowing a silicone solution along the expansion / drainage groove (11).

Preferably, it may be coated on all three sides of the expansion and discharge draining groove 11, but it is sufficient that the waterproof layer is formed at least on the lower surface so as not to be directly permeated downward.

In addition, the water storage buffer material is formed by disposing a plurality of cut-off fastening portions 12 at a predetermined interval in a portion where the expansion / drainage grooves 11 are not formed.

The incision fastening part is constructed by cutting the water storage buffer material vertically and inserted into the stretchable and fastening fastening member 2 for fixing to the soil layer 5 while connecting neighboring unit water storage buffer materials. The incision shape of the incision fastener has a shape cut like a sheath in a certain area rather than a perforated hole shape. Therefore, in a state in which the elastic member 2 is not inserted, the structure is always attached due to the material property of the moisture storage buffer material, so that the rainwater is not directly drained to the lower portion.

As an example of the machining shape of the cut-away fastening portion, a straight shape or a cross shape or more can be vertically formed. Needless to say, such a processing form does not limit the present invention, but it is sufficient that a cutting gap is formed to such an extent that the elastic shrinkable fastening member 2 can be inserted.

The non-skid portion 13 is formed on the upper surface of the moisture storage buffer material. The non-slip portion is formed by embossing in the form of a continuously arranged semicircular sphere, a cylinder, a polygonal column, or various raised projections.

This non-slip portion enhances the workability of the grass plant material layer 4 made of natural grass or artificial grass applied to the upper portion. Usually, the lawn planting layer is laid on the top of the cushioning structure according to the present invention, which is fixed on the soil layer 5 in the form of a roll. However, since there is no separate fixing member and the installation state is maintained by its own load, It can be pushed when a large occurrence occurs. If such a non-slip prevention portion is provided, it is possible to reduce the piling phenomenon and improve the construction quality.

The stretch shrinkage fastening member 2 is a member for connecting the neighboring unit moisture storage damping materials and fixing the water storage dampening material to the soil layer 5 so as not to move. The reason why the unit water storage damping materials are connected by using the elastic shrinkable fastening members is that the method of connecting the unit water damping materials through the lateral direction due to the material characteristics of the water storage damping material This is because there is no fixing force for the soil layer 5.

The stretch shrinkage fastening member 2 is fastened to the cut-off fastening portion 12 of the unit water moisture storage buffer material 1 (the stretch shrinkage fastening member 2) which is required to be cut (connected) to a required length And is inserted and fixed to the soil layer (5) while connecting between the unit water storage buffer materials (between the fastening members - removed).

Specifically, the stretch shrinkage fastening member is made of a nail, anchor, or a piece, and passes through the cut-out fastening portion to connect the fastening portion 21 to the soil layer 5 and the elastic connecting portion (22).

The fixing portion 21 may be made of a steel material but is preferably made of a hard synthetic resin material having corrosion resistance and good durability and elasticity. The upper head 211 of the fixing part 21 has a larger diameter than the insertion opening 221 of the elastic connection part and the lower cone 212 has a diameter larger than the column diameter It is preferable to form the catching jaws 214 so as not to fall off easily when they are buried in the soil layer. If the soil is not formed in this way, the fixing part may be taken out over the next time to the soil layer.

The elastic connection part 22 is formed with a plurality of insertion ports 221 arranged to insert two or more fixing parts and a groove part 222 along both sides in the horizontal direction so as to facilitate the expansion and contraction according to the temperature change and the incision.

At this time, the size of the insertion port is formed to have a size such that the head portion of the used fixing portion is not caught and hanged. The point of formation of the insertion port has an interval corresponding to the position of the cut-out fastening portion. Therefore, it is preferable that the interval of the insertion port corresponding to the connection portion between the side portions of the water storage buffer material is formed to be narrower than the interval of the insertion interval between the points where the expansion and contraction drainage grooves are formed. Of course, some clearance is adjustable because of the material of the elastic connection with elasticity.

 In addition, although the intervals of the groove portions may be variously formed, they may be formed in correspondence with the intervals of the expansion and contraction drainage grooves between the unit level storage buffer materials so that the same behavior can be achieved during expansion and contraction. For this purpose, it is formed so as not to be formed at a position corresponding to the engagement contact surface portion between the unit moisture storage buffer materials. The reason for this is that the side portions between the moisture storage cushion materials do not form the expansion and contraction drain grooves to increase the adhesion at the time of bonding.

Also, it is preferable that the material of the elastic connection part is made of a synthetic resin material which is the same as or similar to that of the moisture storage buffer material and has the same or similar shrinkage strain according to the temperature change.

The perforated drain pipe (3) is made of a flexible synthetic resin material, and a plurality of holes (31) are formed along the periphery so that rainwater flows into the inside and drained. In addition, the through-hole drain pipe may be provided with a non-woven fabric or the like wrapped around the circumference as needed to more effectively block the inflow of soil or foreign matter. Of course, it is of course possible to use a hole drain pipe without wrapping the periphery of the nonwoven fabric.

Further, the shape or diameter of the through-hole pipe is not limited to the shape and size of the illustrated embodiment, and may be modified into various shapes and sizes not illustrated, provided that it is capable of inflow and outflow of rainwater.

By providing a plurality of such drainage pipes, drainage can be stably performed by assisting the drainage ability of the new drainage ditches 11 into which rubble or gravel is introduced.

In addition, the drainage pipe should be installed only in the upper extension drainage groove when the drainage drainage groove is configured to be vertically symmetrical. The reason is that when it is installed at the bottom, it can fall to the bottom. When the installation method is inserted into the expansion / drainage drainage groove, it is well inserted and fixed due to the elasticity of the drainage pipe and the elasticity of the drainage groove. In addition, soil or rubble can flow into the newly discharged drainage grooves and can be pressurized, and can be firmly fixed even by the load of the lawn material layer provided on the upper part. Therefore, it is always located in the expansion and contraction drainage groove. It is possible to constitute and fix the support protrusion which protrudes inward from the vertical both sides of the elongated and contracted drainage grooves.

5 is a flowchart illustrating a construction procedure according to an embodiment of the present invention. The construction steps of the buffer structure will be described below.

First, the buffer structure according to the present invention having the above-described structure is prepared. (S10)

Thereafter, the soil layer 5 or the general soil layer 5 is flattened without compaction or compaction of the soil layer 5 or the soil layer 5, which is constructed by using layers of different materials from a playground, a roof,

In the step S20, known compaction means such as a roller device or a vibratory compaction device may be used during compaction. If compaction is difficult, compaction can be omitted.

The reason for flattening the soil layer is to even out the construction surface of the buffer structure and the grass planting layer to be constructed in the subsequent step.

Thereafter, the cushioning structure according to the present invention is continuously connected by an area required to form a green zone using the expansion and contraction fastening member 2. (S30)

In step S30, the stretching and shrinkage fastening member 2 is cut to a required length and positioned at each cut-off fastening part between adjacent moisture storage damping materials, and then at least two fixing parts 21 are cut, May penetrate through the insertion opening 221 of the elastic connecting portion 22 and the cut-out fastening portion so as to be pressed to the soil portion. At this time, if necessary, the adjacent water storage buffer material 1 may be composed of a plurality of the elastic shrinkable fastening members 2 or a plurality of fixing parts in one elastic connection part.

And then inserting the perforated drain pipe 3 along at least one of the same directionally extending drainage grooves 11 formed in the cushioning structure constructed at step S40. At this time, the perforated drain pipe 3 is divided into a plurality of And the rainwater is drained in one direction by connecting the rainwater to the unshown drainage channel. When installed as such, the rainwater can be rapidly drained along with the drainage through the new drainage drainage grooves. In addition, the drainage pipe should be installed only in the upper extension drainage groove when the drainage drainage groove is configured to be vertically symmetrical. The reason is that when it is installed at the bottom, it can fall to the bottom.

Thereafter, the natural or artificial grass material layer 4 is formed on the non-skid portion 13 formed on the upper surface of the water storage buffer material. (S50)

When the above steps are completed, a basic green area composition is completed.

After the basic greenery composition of the greenery is completed, a step of spraying silica sand or a filler (e.g., rubber chips, rice hulls, loess) onto the surface of the grassyard material layer 4 selectively applied as required may be performed. By using these steps, the silica sand or the elastic filler not only protects the grass layer from being damaged but also provides a feeling of cushioning or an ordinary soil layer so that people are not injured during exercise or walking.

After the buffer structure according to the present invention, which has been continuously constructed on a soil layer such as a playground, a roof or a mountain slope, and a natural or artificial grass material layer are formed thereon through the above steps, In case of artificial turf, it is drained to the lower cushioning structure through drainage holes (not shown) formed at regular intervals, and in case of natural turf, it is naturally drained to the lower cushioning structure. Thereafter, the rainwater drained by the cushioning structure is partially absorbed by the water storage buffer material constituting the buffer structure or drained through the expansion drainage groove formed in the water storage buffer material. In addition, the rainwater that is out of the storage capacity of the water storage cushion material is drained into the soil layer with delayed drainage through the water storage buffer. As a result, flooding of the grass planting layer and loss of the lower soil layer are reduced to reduce the depression of the grass planting layer and the co-occurrence of the lower soil layer.

In addition, the moisture-buffering material of the buffer structure according to the present invention normally provides a buffering force to the lawn material layer located at the upper part.

In addition, the moisture stored in the water storage buffer of the buffer structure during the rainfall acts as a water supply source for the natural grass, which usually has no separate water supply means, and the artificial grass is filled with evaporated water on the surface, The skin friction is reduced or the artificial turf is prevented from drying to improve durability.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims and their equivalents. Of course, such modifications are within the scope of the claims.

(1): water storage buffer material (2): elastic shrinkage fastening member
(3): drainage pipe (4): grass planting layer
(5): soil layer (11): stretch drainage groove
(12): incision fastening part (13): surface slip prevention part
(21): Fixing portion (22): Elastic connecting portion
(31): Hole (111): Waterproof layer
(211): head (212): cone
(213): column (214): latching jaw
(221): insertion port (222): groove

Claims (10)

Some of the rainwater dropped during the rainfall while buffering the load of the grass planting layer is stored and accumulated as much as the storage capacity, and then drained to the lower part of the soil layer. The drainage water discharges some rainwater laterally, A water storage buffering member having a plurality of expansion and contraction drainage grooves formed therein and a plurality of cutaway engagement portions formed at predetermined intervals in a portion where the expansion drainage grooves are not formed;
And a resilient connection portion connecting the fixed portions inserted into the soil layer through the cut-off fastening portions and the fixed portions inserted into the neighboring unit water storage buffer material, and cutting the flexible connection portion into a length required for the elastic connection portion, And a stretch shrinkage fastening member for connecting the moisture storage buffer material to the soil layer and connecting the adjacent moisture storage buffer material at an arbitrary interval or position,

Wherein the upper and lower shafts are formed to have a larger diameter than the insertion opening of the elastic connection part, and the lower cone is formed with a locking protrusion at a portion contacting the column, and the elastic connection part is made of the same material as the moisture storage buffer material Wherein a plurality of insertion ports are formed so as to insert at least two fixing portions, and grooves are formed on both sides in the horizontal direction to facilitate elongation and contraction according to a temperature change and incision.
The method according to claim 1,
And a plurality of holes formed along the perimeter so as to drain the rainwater in one direction while blocking the bottleneck of the drainage flow caused by the inflow of rubble and gravel to the stretch drainage grooves. Buffer structure.
The method according to claim 1,
Wherein the expansion and contraction drainage grooves are arranged in a lattice form on at least one side of the water storage buffer material so as to expand and contract.
The method of claim 3,
Wherein the stretch drainage grooves are symmetrical to the upper and lower surfaces of the moisture storage buffer material.
The method of claim 3,
And a waterproof layer coated with a waterproof material is formed on the inner surface of the expansion and contraction drainage groove.
The method according to claim 1,
Characterized in that an upper surface of the water storage buffer material is formed with a non-slip part which is embossed in a semi-circular shape, a column shape, a polygonal shape or a variety of raised shapes.
delete (S10) preparing a buffer structure for a grass planting material having a constitution according to any one of claims 1 to 6;
(S20) of flattening the soil layer or general soil layer, which has been constructed with layers of different materials, without compaction or without compaction;
A step (S30) of continuously connecting the cushioning structure by an area required to form a green zone using a stretching and shrinkage fastening member;
(S40) of inserting a through-hole drainage pipe along at least one same-direction expansion / contraction drainage groove formed in the cushioning structure constructed in the step (S40).
The method of claim 8,
The method of any one of the preceding claims, further comprising the step of: (S50) applying a natural or synthetic grass layer on the non-skid portion formed on the upper surface of the water storage buffer after step S40.
The method of claim 9,
Wherein the step S50 further comprises the step of spraying silica sand or a filler on the surface of the grass plant material layer.

Images