KR20090129319A - Structure of invisible waterway and construction method thereof including punctured pipes - Google Patents

Abstract

PURPOSE: A base course structure of an unexposed drainageway and a construction method of an unexposed drainageway including a perforated pipe are provided to drain off water through a perforated pipe by permeating surface water easily without exposing a drainageway and a drain outlet, to maintain an air gap of a permeable layer continuously, and to manage a non-point pollution source. CONSTITUTION: A base course structure of an unexposed drainageway comprises an elastic layer(2) composed of an elastic chip and a binder, a permeable layer(3) composed of rubble and an urethane binder, and a ground reinforcement mat(4) having a perforated pipe buried under the inside.

Description

Structure of invisible waterway and construction method including including punctured pipes}

The present invention cuts only the depth to which the permeable layer is formed without deepening the cut as in the existing playground composition, and reduces the amount of soil discharge, and installs the reinforcing mat on the stabilized raw ground to form the permeable layer, so the rate of change of the ground is extremely The present invention relates to a base structure of an unexposed drainage channel that can be used without any obstacle even for a long time of use and to a method of constructing an unexposed drainage channel including a hole.

The present invention relates to a non-exposed drainage channel including a perforated pipe applied to the side of the playground, parking lot, road, golf course, in particular, to permeate the rainwater through the permeable layer to prevent ground subsidence and suppress surface drainage, Rainwater is discharged to the outside through perforated pipes to remove water pools on the surface, improve soil microbial growth environment, and non-exposed drainage including perforated pipes for the management of nonpoint pollutant sources and the optimal condition of ground structures. The present invention relates to a base structure and a construction method thereof.

The present invention relates to the improvement of the environment-friendly permeable elastic bottom structure and packaging method of the Republic of Korea Patent Registration No. 10-0497565 registered by the applicant of the present invention, to prevent ground loss and settlement due to over-permeation of rainwater A reinforcing mat was used to prevent the deformation of the surface layer. As a result, the permeation of rainwater progressed uniformly like the permeability coefficient of the reinforcing mat to prevent the loss of earth and sand, and by installing a perforated pipe on the top of the reinforcing mat to prevent clogging of the perforated pipe, the fine non-point source introduced through the permeable layer was perforated. It is possible to maintain drainage by preventing the residue from remaining in the permeable layer by being discharged through the tank, so that the drainage channel and drain hole exposed to the surface are not exposed.

Existing drainage or side drains of roads are often flooded due to poor water construction due to poor construction after raining, and sudden drains due to clogged drains due to falling leaves, various inflows of waste and other factors.

As a result, since cleaning and dredging must be performed periodically to remove the various wastes flowing through the drainage path, it is difficult to maintain the clean state at all times, and it is difficult to maintain the clean state. The result is the death of fish.

In addition, since the drainage of the playground or the side of the road is made of steel or similar material, there is a high probability of a safety accident and cannot prevent the inflow of dirt into the drainage.

The existing nonpoint source control methods are mostly managed after collection rather than at the site of nonpoint source outflow.It has a low design rainfall intensity value, making it difficult to control the nonpoint source when the design rainfall intensity is over. Due to the nature of rainfall, rainfall in summer is concentrated and high dispersion value compared to other countries, and the concentration of rainfall in summer is intensifying. Therefore, a nonpoint source treatment method with large design rainfall intensity is needed.

As mentioned above, pests caused by poor drainage of sports grounds, roads and parking lots, loss of drainage role due to the input of dirt, inflow of streams of pollutants, and obstacles to efficient site use due to the installation of drainage, cleaning and dredging costs An increase of is an immediate problem to be solved through the present invention.

An object of the present invention is to solve the problems as described above, the surface of the water is easily permeated without exposing the drainage and drains to drain through the perforated pipe, to maintain the voids of the permeable layer and to maintain the non-point source The present invention provides a method of constructing a non-exposed drainage channel including a base structure of a non-exposed drainage track that can be managed and a hole.

In order to achieve the above object, the base structure of the non-exposed drainage channel according to the present invention is formed to include an elastic layer made of an elastic chip and a binder, a permeable layer made of crushed stone and a urethane binder, and a ground reinforcing mat.

In addition, a perforated tube may be embedded in the permeable layer, and the elastic layer may include 70 to 80% of an elastic chip and 20 to 30% of a urethane binder in a weight ratio, and the elastic chip may be a rubber chip, a urethane chip, or an EPDM chip. And cork chips.

However, in the case of cork chips, cork chips 40% and urethane binders 60% are mixed and a binder having a solid content of urethane binder of 95% or more should be used.

In addition, the upper portion of the elastic layer, a lattice-like or continuous pattern of a depth of 2-5cm, squares of 2-5cm sized hole is made of a high friction compound having excellent friction strength, the hole in the weight ratio of elastic chip 80 The mixture comprising a% and 20% urethane binder is formed to further include a surface layer reinforcing mesh to be filled, the base structure to include a material separator.

In the method of constructing an unexposed drainage channel including a perforated pipe according to the present invention, the step of cutting the drainage part, the step of installing a ground reinforcing mat in the entire construction area including the cut cut land, positioning the hole in the drainage part Step, laying crushed stone throughout the construction area including the drainage portion, planarizing the crushed stone, solidifying the upper portion of the laid crushed stone by spraying a binder, and laying an elastic layer on the solidified crushed stone And the step of installing and leveling the elastic layer, and installing a surface reinforcing mesh having a lattice or a continuous pattern hole in the area where the vehicle is expected to pass, and in the hole. And filling and planarizing the same material as the elastic layer.

As described above, the base structure and the construction method of the non-exposed drainage including the perforated pipe according to the present invention, the rainwater immediately flows into the basement to replenish the water level of the groundwater, discharge the residual rainwater through the perforated pipe, By suppressing the dirt, it is possible to obtain the effect of eliminating the cause of odor or pest habitat caused by dredging or drainage of the drainage drainage. Therefore, even if heavy rain falls, the drainage drainage blockage is minimized because there is no dirt in the drainage drainage. In other words, it prevents the inflow of nonpoint sources of rainfall and protects the river ecosystem caused by the initial rainfall, and keeps it clean without periodically cleaning and dredging.

In addition, according to the present invention, since the drainage channel is not dredged exposed, it is possible to provide a space to prevent the injury during the game and to exercise in peace.

In this way, it eliminates the risk factors of the playground, prevents the drainage role caused by the pollution of the drainage, the habitat of the pests and the input of the dirt, and the maintenance of the artificial turf with the smooth drainage and breathable structure. It is possible to reduce the management cost by supporting the growth of soil, and to prevent ground subsidence with the support of the ground reinforcement mat, and to prevent the outflow of soil by infiltrating rainwater at the same speed.

In addition, various problems that impede the efficient use of the site due to the installation of the drainage coexist, but considering that the average of 5% of the land area drainage in the present invention there is no exposed drainage in the present invention can maximize the use of land efficiency It can be effective to manage easily.

In addition, by ensuring a smooth pitcher helped the growth of microorganisms on the surface and had a good influence on the vegetation of the ground.

In addition, it installs an elastic drainage part to remove voids from the exposed drainage and to allow voids to be restored as a whole, and induces rainwater into the perforated pipe through the drainage, thereby protecting the danger and contamination of the exposed drainage path, as well as rainwater through the permeable layer and the perforated pipe. Water flows into the soil to increase groundwater levels and provide nutrition and moisture to soil vegetation.

The above and other objects and novel features of the present invention will become more apparent from the description of the specification and the accompanying drawings.

First, the concept of the present invention will be described.

In the case of the permeable pavement currently used, there are few voids and its own elasticity does not have its own tensile strength to block the permeable voids. In addition, in the case of the crushing method, there is a problem such as surface drainage of rainwater coming off and the permeability of the permeability, and since the lower crushed stone is solidified like a pitcher cone, the permeability is not continuously made and the solidified voids are blocked, thereby losing the sustainability.

To solve this problem, the following methods are required.

First, solidification of the upper surface of the upper surface instead of solidifying the crushed stone as a whole, to ensure the upper surface workability, and the lower crushed stone should have a structure that prevents non-point sources such as fine dust from being mutually coupled in the permeable voids.

Second, the permeation voids should be maintained continuously by preventing the mixing of the ground soil and the permeable layer crushed stone caused by the decrease of cohesion of the ground due to the infiltration of rainwater from the lower base and the upper permeable layer.

Third, the permeable rainwater should be discharged through the drain pipe quickly so that it will not saturate and overflow to the surface.

In the present invention, a non-point pollutant is formed by forming an elastic layer having a predetermined thickness on the top as a method for inducing continuous permeability, and when the pollutant blocks the pores of the elastic layer, the pore blocking phenomenon can be restored by using the elasticity of the elastic layer. The structure is designed to block pore occlusion. In order to maximize the voids of the permeable layer using crushed stone, the upper part of the permeable layer is solidified using a flexible urethane-based binder, and only the upper part of the permeable layer is laid. For this purpose, the crushed stone of the permeable layer is laid and the urethane-based and ductile material is placed on top of the crushed stone. The binder is solidified by spraying with an acrylic or rubber binder.

When a force is applied to the solidified permeable layer as described above, the structure allows the permeable layer crushed stone to move, but it does not solidify the non-point pollutant that can be solidified by remaining in the voids. Thus, it is possible to continuously maintain the structure preventing the blockage of the permeable layer.

The ground reinforcing mat installed on the upper ground is not only for reinforcing the ground, but also to prevent the mixing of the lower soil and the permeable layer, and to prevent the inflow of soil, to maintain the excellent inlet of the upper perforated pipe of the reinforcing mat. That is, the reinforcing mat prevents the movement of the lower soil to the crushed stone permeable layer and guides the fine non-point pollutant source introduced from the upper elastic layer to the perforated pipe which is the discharge pipe. Removal of fine contaminants from the sump, leading to fertilization, maintains permeability.

Thus, the mat installed under the permeable layer was able to continuously maintain the voids by guiding the discharge into the perforated pipe from above.

The reinforcing mat has been used for reinforcing the soft ground section of the road so far, but the case was mainly used in the soft ground of the reclaimed land, but in the present invention, the mat prevents surface subsidence due to the ground subsidence and is infiltrated from the upper part during rainy weather. It is used for the purpose of maintaining the permeability gap continuously by preventing the loss of soil due to the large amount of rain and preventing the mixing of aggregate and the lower soil.

In addition, by ensuring a smooth pitcher, it helped the growth of microorganisms on the surface and thus had a good influence on the vegetation of the ground.

In addition, by removing the exposed drainage channel and installing an elastic drainage part in the side opening, the rainwater is induced into the perforated pipe through the drainage part, so as to protect against the risk and contamination of the exposed drainage channel and to drain the rainwater into the soil through the permeable layer and the perforated pipe. It is characterized by the ability to increase groundwater levels and to provide nutrition and moisture to soil vegetation.

Hereinafter, the configuration of the present invention will be described with reference to the drawings.

The base structure of the non-exposed drainage channel according to the present invention will be described with reference to FIG. 1, wherein the base structure has an elastic layer (2) made of an elastic chip and a binder, a permeable layer (3) made of crushed stone and a urethane binder, and ground reinforcement. It consists of the mat 4. In Fig. 1, reference numeral 1 denotes artificial turf, and reference numeral 5 denotes a ground.

The ground reinforcing mat (4) can prevent settlement by using a mat having strength in both directions of the weft and the warp, and maintains a constant void because the upper crushed stone does not mix with the lower soil even after long-term pressure and rainwater penetration. To help.

In addition, if the material of the ground reinforcing mat (4) is made of PET, it is eco-friendly and does not decay, so it can maintain the initial construction state even after long-term use, ensuring construction integrity during construction, and damage to the mat even under heavy loads. There is no problem of stability even after construction.

Test results regarding the safety factor of the ground reinforcing mat 4 according to the present invention are shown in Tables 1 to 3 below.

At this time, the ground reinforcing mat (4) shows the construction safety factor as shown in Table 3, not only to prevent the soil sediment from entering the upper permeable layer, but also to prevent the off phenomenon of the surface coming to the ground subsidence due to the small deformation in the construction part safety factor give.

In the construction test of the ground reinforcing mat (4) was tested by comparing the samples of the same roll (roll) before and after construction.

The construction for the test was performed on the assumption that it was a normal site, ignoring the individual characteristics of the construction site, and the recovery of the ground reinforcement mat was recovered by manpower without using equipment.

Table 1 below shows the measurement results of the strength before construction.

Item MD direction CD direction Plain weave 15T RIB Reinforcement 15T Plain weave 15T RIB Reinforcement 15T Examination Wide tensile strength Elongation (%) Wide tensile strength Elongation (%) Wide tensile strength Elongation (%) Wide tensile strength Elongation (%) One 150.6 19.4 155.3 17.6 148.4 18.6 159.3 17.2 2 151.9 18.6 159.1 17.2 149.8 19.1 153.9 16.9 3 151.4 18.7 157.7 17.1 152.9 19.0 156.3 17.8 4 152.4 19.1 158.5 17.9 150.6 18.3 158.2 17.5 5 150.4 18.7 157.6 18.2 151.4 19.1 158.8 18.1 Average 151.3 18.9 157.6 17.6 150.6 18.8 157.3 17.5  Strength unit (kN / m)

The measurement after the test showed the results as shown in Table 2.

Item MD direction CD direction Plain weave 15T RIB Reinforcement 15T Plain weave 15T RIB Reinforcement 15T Examination Wide tensile strength Elongation (%) Wide tensile strength Elongation (%) Wide tensile strength Elongation (%) Wide tensile strength Elongation (%) One 142.6 19.4 149.3 17.4 141.4 17.8 153.0 16.9 2 143.9 17.6 154.1 16.8 142.8 18.3 148.6 17.7 3 145.4 18.1 153.7 16.9 145.9 18.0 151.1 17.4 4 144.9 18.4 153.5 17.5 142.6 17.6 152.9 17.3 5 141.4 17.8 150.1 17.4 142.3 18.4 153.4 16.7 Average 143.6 18.1 152.1 17.2 143 18.0 151.8 17.2 Reduction 5.2 4.3 3.6 2.3 5.3 4.3 3.6 1.8  Strength unit (kN / m)

Table 3 shows a comparison between the construction before and after construction. The partial safety factor was calculated as follows.

T _orig

F S _ID = ----------------

                           T _{e x h}

Where T _{ori g.} = Tensile strength before construction.

T _exh = tensile strength when the mat used for construction was taken out and tested intact.

Partial safety factor during construction                    Mat type Applicable object Plain weave 15T RIB Reinforcement 15T Partial stability rate during construction 1.05 1.04

As shown in Table 3, the reduction rate of strength was relatively low as 4-5%, indicating construction safety.

Ground reinforcing mat (4) is to install the integral mat throughout, and maintain the sewing strength by thorough sewing.

When the ground reinforcing mat 4 is installed, the crushed stone is laid as a water-permeable layer 3 on the upper part. The size of the crushed stone may be 40 mm or less to secure the voids as much as possible. It is possible to further increase the better effect of fixing the top of the permeable layer (3).

When the compaction of the crushed stone is completed, the crushed stone, which is the aggregate of the permeable layer 3, is stabilized by using a urethane binder on the top of the crushed stone. At this time, the urethane binder is used to guarantee elasticity and the upper elastic buffer layer has the maximum bond strength with the permeable layer. It is a method to maintain and combine.

The elastic layer 2 is to prevent the clogging of the air permeable layer 3, and to stabilize the water permeable layer 3 once again with a rubber chip or the like to absorb the impact of the upper portion and to maintain the air gap of the other structure of the surface layer. For example, in terms of average rainfall measured in Daejeon area, it shows smooth drainage performance without any water accumulation on the surface even at 200mm rainfall of 100mm / hr.

The numerical value calculated can be expressed as follows.

A) thickness and permeability coefficient

1.Elastic layer: t = 1cm. k = 1cm / sec

2.Permeable layer: t = 10cm, k = 50cm / sec

3. Civil reinforcement mat: t = 0.05cm. k = 0.1 cm / sec.

4.Round ground: k = 0.01 cm / sec.

B) rainfall intensity

I = 100 mm / hr (200-year frequency probability rainfall in Daejeon province)

C) Review of vertical penetration during rainfall.

When it rains with a rainfall intensity of 100 mm / hr.

100mm / hr = 10cm / 3600sec = 0.00278cm / sec

The permeability coefficient of the elastic layer is 10 × 10 ^-1 cm / sec

k = 1cm / sec. and the rainfall rate is 0.00278cm / sec, so no surface drainage occurs.

D) Review the storage capacity of the initial crushed rock layers.

1. Rainfall per unit area.

0.1 cm / 60 min × 1.0 m × 1.0 m = 0.1 / 60 min.

2. Crushed layer retention per unit area.

1.0m × 1.0m × 0.1m × 0.46 (porosity) = 0.46cm 3

3. The time it takes for the crushed layer to saturate.

0.046 × 60min. × 0.1 = 27.6min

E) Reviewing the excellent drainage capacity in the horizontal direction through the crushed rock layer.

(Condition: A system in which drainage culverts are removed at intervals of about 20m, and rainwater is dispersed in both directions.)

1. The amount of rain falling per unit width.

    Q = 100 mm / hr × 1.0 m × 10.0 m

      = 10 cm / 3600 sec x 100 cm x 1000 cm = 277 cm3 / sec

2. Good exclusion per unit width.

    q = kiA

      = 50cm / sec × 10cm / 1000cm × 100cm × 10cm = 500cm3 / sec

      q = kiA = 500 / sec. Q = 277 / sec

The problem caused by current rainfall is solved.

The flow of fluid according to the permeability coefficient can be shown in Table 4 below.

Representative Permeability of Saturated Soil K Types of soil cm / sec ft / min Clean pebbles 100-1.0 200-2.0 Coarse sand 1.0-0.01 2.0-0.02 Fine grain sand 0.01-0.001 0.02-0.002 Silty clay 0.001-0.00001 0.002-0.00002 clay <0.000001 <0.000002

At present, the method of construction on the crushed stone layer and the method of construction on the pitcher cone used as the artificial turf undercarriage, because the lack of elasticity, the movement fatigue after long-term exercise is easy, and by installing the cushioning elastic layer (2) according to the present invention knee To protect the environment and to provide an environment such as natural grass.

The construction of the elastic layer (2) is mixed on the elastic chip and the binder to be installed on the surface of the solidified permeable layer (3) and at this time laid to maintain the plane.

The elastic chip is made of rubber, synthetic rubber (EPDM, EPDM), urethane, cork, etc., with excellent elasticity and excellent resilience.

Referring to Figures 2 to 4 the construction method of the unexposed drainage channel including the perforated tube according to the present invention.

The construction according to the present invention is to ensure that rainwater always flows easily into the basement to eliminate water traps on the surface layer and to reduce the maintenance costs required for management, mainly to maintain and smoothly drain water in the playground, road, parking lot, golf course, etc. It is the construction of an unexposed drainage that allows it to be done. For example, a method of constructing an unexposed drainage channel including a perforated tube according to the present invention in a playground will be described with reference to FIG. 2.

First, only the drainage part is cut in the original ground (5), and the ground reinforcement mat (4) or the ground reinforcement grid (not shown) is installed in the cut ground and the entire playground, and then the ground reinforcement mat (4). Install the perforated pipe 18 in the drainage part of the bed. Next, crushed stone is laid as the permeable layer 3 on the perforated pipe 18, the ground reinforcing mat 4 for civil engineering, or the ground reinforcing grid. That is, crushed stone is formed in the upper part of the perforated pipe 18 and the ground reinforcing mat 4 to form a permeable layer 3, and the crushed stone of the permeable layer 3 is compacted and flattened by using a roller.

At this time, the ground reinforcing mat (4) is a one-piece type (not by overlapping the reinforcing mat of the specified standard according to the conditions of the site, rather than planting, using the reinforcement mat made in one by manufacturing in the factory the same size as the construction area, manufactured At the time, the width can be installed by joining through sewing to meet the specifications of the site, making it the same size as the site, and constructing it).

On top of the permeable layer 3 of the flattened crushed stone, only the top of the crushed stone is stabilized, and the bottom of the crushed stone is solidified by spraying 1-2.5 kg of binder per unit area (1 m 2) of the crushed stone. The binder is preferably a binder of urethane, acrylic or rubber component. After curing is completed, the buffer elastic layer 2 is formed on the upper part of the buffer elastic layer 2, which is mixed at a weight ratio of 70 to 80% of the elastic chip and 20 to 30% of the urethane binder to a thickness of 5-20 mm. Install.

The elastic chip of the cushioning elastic layer 2 installed generally maintains a plane by using a constant temperature roller, but the present invention may form a plane by using a constant temperature bar in addition to the constant temperature roller.

The elastic chip used as the material of the buffer elastic layer 2 is preferably a rubber chip, a urethane chip, an EPDM chip, a cork chip, or the like, but is not limited thereto.

However, in the case of cork chips, cork chips 40% and urethane binders 60% are mixed and a binder having a solid content of urethane binder of 95% or more should be used.

The method of constructing the non-exposed drainage channel including the perforated pipe according to the present invention is based on the above-described contents, but may be slightly modified depending on the object. Hereinafter, such a modified example will be described through examples.

Example 1

When constructing a playground with artificial turf, cut the drainage part in the original ground (5), and then plow the cut paper with a roller, install the ground reinforcing mat (4) for civil engineering on the upper part, and install the perforated pipe ( 18), crushed stone is installed on the installed perforated pipe 18 and the ground reinforcing mat 4 to form a permeable layer 3, and the crushed stone is compacted to 80% by using a roller and at the same time smoothed. After spraying a urethane binder on the top to stabilize the crushed stone of the permeable layer (3), as soon as it is cured, the mixture is mixed with the elastic chip to the thickness of 5-20mm and laid a flat surface using a constant temperature roller or a constant temperature bar (Bar) After forming the artificial turf (1) on the top. Alternatively, before the artificial turf 1 is installed, the elastic packaging material may be further installed to form an elastic surface layer.

Example 2

As shown in FIG. 4, in the case of installing a drainage path so that the ground drainage path is not exposed to the side of the road where the roadway and the sidewalk meet using the perforated pipe 18, the ground is cut at the drainage part and the ground reinforcement mat 4 is provided. Install, and install the perforated pipe (18) on the ground reinforcing mat (4). Next, a part of the permeable layer 3 is formed by filling the crushed stone, and the permeable layer 3 is formed by stabilizing the crushed stone with a urethane binder. Thereafter, a rubber chip is mixed with the urethane binder without a separate surface drain hole on the permeable layer 3 to form an elastic layer 2 by laying it at a thickness of 10 mm to prevent the clogging of the permeable layer 3. Surface reinforcement mesh made of polymer compound with excellent friction strength such as flexible urethane or flexible plastic with hole of 2-5cm depth and 2-5cm depth with elastic lattice shape or continuous pattern appearance on top of rubber chip (17) Install it.

A mixture of 20% urethane binder and 80% rubber chip is poured into the hole of the surface reinforcing mesh 17 to the upper part of the surface reinforcing mesh 17 and the surface is smoothly finished. Through the permeable layer (3) through to reach the perforated pipe 18, to complete the road-side elastic permeable type unexposed drainage.

In Fig. 4, reference numeral 19 denotes a lane, for example, 20 denotes a footpath boundary stone, and 21 denotes a footpath, for example.

Example 3

In general, a method of constructing an elastic packaging material, using an existing substrate, such as cement, sidewalk blocks, asphalt, or by forming a new substrate to construct an elastic packaging material on top of it, or the applicant has a registered patent 10-0497565 There are various methods such as forming an environmental layer on the original ground, placing a permeable layer and an adhesive layer, and forming an elastic packaging material on the original ground, but in the former case, the pitch is impossible, and in the latter case, the ground is lost due to a large amount of permeation. It was.

The method of installing the elastic packaging material while solving such a problem will be described with reference to FIG. 2, wherein the ground reinforcing mat 4 is installed on the original ground without a separate facility or process; Ground reinforcing mat (4) is provided with a material separator 11 having a separate groove at the end of the slope; The material separator 11, the lower permeable layer 3, and the upper elastic layer 2 are filled in the groove of the material separator 11 by filling the mixture of 70-80% of the elastic chip and 20-30% of the urethane binder in the weight ratio. ) Is combined into one and combined so as not to be separated to make the finishing part of the elastic packaging stable.

In addition, the ground reinforcing mat (4) at the bottom controls the permeability rate of rainwater, and prevents the surface subsidence due to the settlement of the ground, and the ground reinforcing grid (grid) and ground reinforcing mat (4) is combined to form a structure When the structure is prevented from changing, the elastic layer is constructed in a structure that can firmly maintain the original shape of the initial construction and cope with changes in the ground.

Cork chip can be used for elastic packaging. Because cork has large volumetric deformation due to moisture, when cork alone is used, separation occurs due to expansion and contraction.However, when using ground reinforced grid, Deformation can be reduced and departures can be prevented.

Example 4

On the other hand, when creating a playground using the present invention, there is no need to cut the soil to raise the playground only to the depth only to the depth to be formed can be used as a way to reduce the amount of soil discharge and save time and money, It is also possible to cut the drainage part and not cut the other part, and to form the drainage part in the ground so as to bury the perforated pipe at 20m or less on a flat surface and 20m or more on a slope.

The invention applies to unexposed drainage substrate structures.

1 is a detailed view of a drainageless pitcher base structure according to the present invention.

Figure 2 is a cross-sectional view of the drainage oil pipe part of the zero drainage permeable base structure including a hole pipe according to the present invention.

Figure 3 is a plan view of the surface reinforcement mesh according to the present invention.

Figure 4 is a perspective view of the road side unexposed drainage using the layer reinforcement mesh and perforated pipe according to the present invention.

* Description of the symbols for the main parts of the drawings *

1: artificial turf. 2; Elastic layer. 3: permeable layer. 4: Ground reinforcement mat 5: Base ground.

11: Material separator. 13: Elastic packaging (other packaging materials)

17: Surface reinforcement mesh. 18: Merchant 19: By car

20: Pedestrian crossing 21: Pedestrian path

Claims (8)

From the top, An elastic layer consisting of an elastic chip and a binder, A water permeable layer consisting of crushed stone and a urethane binder, A base structure of an unexposed drainage track comprising a ground reinforcement mat. The method of claim 1, Base structure of the non-exposed drainage, characterized in that the perforated pipe is embedded in the permeable layer. The method of claim 1, The base layer structure of the non-exposed drainage, characterized in that the elastic layer comprises an elastic chip 70 ~ 80% and urethane binder 20 ~ 30% by weight ratio. The method of claim 3, wherein The elastic chip is a base structure of an unexposed drainage, characterized in that any one of a rubber chip, urethane chip, EPDM chip and cork chip. The method of claim 1, The upper part of the elastic layer is made of a high-molecular compound having excellent friction strength with holes of 2-5 cm in depth and 2-5 cm in the shape of a lattice or continuous pattern, the lifespan is 80% elastic chip and A base structure of an unexposed drainage channel further comprising a surface layer reinforcing mesh filled with a mixture including 20% of a urethane binder. The method of claim 1, The base structure is a base structure of the unexposed drainage, characterized in that it further comprises a material separator. Cutting the drainage area, Installing a ground reinforcing mat in the entire construction area including the cut cut paper, Positioning a hole in the drainage part; Laying crushed stone throughout the construction area including the drainage part; Planarizing the crushed stone, Spraying a binder to solidify the upper part of the laid crushed stone, and And installing a flattening elastic layer on the solidified crushed stone top and flattening. The method of claim 7, wherein After laying and planarizing the elastic layer, Installing a surface reinforcing mesh having a lattice or continuous pattern hole; And filling the hole with the same material as that of the elastic layer and flattening the hole.

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