KR20040087144A - The construction of turf athletic field using supplementary foundation and the method threrefor - Google Patents

Abstract

PURPOSE: A grass ground using the auxiliary ground is provided to reduce the differential settlement of a ground, to improve tolerance to traffic injury and drainage efficiency and to make heat insulation and air conditioning possible. CONSTITUTION: The grass ground using the auxiliary ground comprises a pipe(60) placed on the leveled ground and provided with many water holes, an auxiliary ground(40) formed on the ground(30) to fix the base of a pipe, a lawn root support(50) formed on the auxiliary ground and the pipe and mixed with latticed nets(51), and a lawn(100) formed on the upper part of the lawn root support. The pipe(60) is provided with a water supply pipe for supply water, a drainage pipe for draining off water compulsively, and a heat-exchanging pipe for circulating a heat-exchanging fluid for heating up and cooling down the ground.

Description

Grass construction using auxiliary ground and its construction method {The construction of turf athletic field using supplementary foundation and the method threrefor}

The present invention relates to a lawn stadium using a subsidiary ground and its construction method, in particular, by adopting a subsidiary ground system, irrigation system, drainage system, ground insulation / cooling system, lawn sprinkler system of the grass field to reduce the differential settlement The present invention relates to a grass field and a method of constructing the same using subsidiary grounds to improve the pressure-resistance, drainage, and to maintain / cool.

The USGA Method (1993 edition), published by the USGA Association (USGA) Green Section, is a green construction method for golf courses, with a total porosity of 35 to 55% and a saturation permeability of 150 to 300 mm per hour (0.25 to 0.51 mm). ) Consists of a planting layer in the center of irradiation (0.5 ~ 1.0mm), an intermediate layer composed of royal sand (1-4mm), a gravel layer composed of soybeans, a drainage layer, and five ground layers.

However, since the USGA construction method was created as a green construction method for golf courses, it is not unreasonable to apply it to the playground where the pressure of players and lawn management equipment is evenly distributed, and there is no fear of inequality when it is applied to the playground as it is. In addition, the cross-sectional structure of this construction method has a multi-layered structure, and the aggregate size of the used aggregate is strict and the aggregate requirements are high, so the construction cost is excessive, and the construction procedures and methods are difficult and complicated.

The so-called California Method, published by the University of California, USA, proposes a golf course green construction method with about 90% of fine sand to medium sand with a particle size of 0.15 to 0.5 mm. Like the USGA, this method is designed as a golf course green construction method, and it has a comparative advantage in terms of easy construction and low cost, but it is vulnerable to water retention and security, and is prone to drought because it is a sand soil with a single-layer structure centered on fine sand and heavy sand. Has been pointed out as a great fault.

The PURR-wick system, presented by Dr. Daniel's team at Purdue University, Indiana, is a wick of sand, with a waterproof sheet and perforated pipes installed under a single layer of grass planted with sand. By using a large vacuum pump to artificially provide groundwater level control and nutrients in the grass planting layer, by artificially supplying moisture to the dryer by a vacuum pump and forced draining during heavy rain.

This method has good development of grass roots by artificially regulating the groundwater tension of grass roots, but there is concern about uneven settlement of the ground under the waterproof sheet, and it maintains constant surface tension by excluding drainage by natural gravity. Strict and demanding management was required.

2 is a general watering device, which shows a sprinkler 18 device that directly waters the top of the turf.

As described above, the conventional techniques have the following problems.

First, these conventional techniques mainly introduce the construction method for the green construction of a golf course, and are not suitable for various sports fields other than the golf course.

Second, it is unsuitable for climatic environments where the distinction between dryer and rainfall is clear.

Third, the USGA method has high construction and aggregate costs due to the complexity and complexity of construction procedures and methods. In particular, the aggregate production of aggregates is significantly reduced today, but it is becoming increasingly difficult to meet the standard aggregate specifications of the USGA method, which demands strict aggregate standards in the situation where aggregate fluctuations are feared due to the increase in demand of aggregates due to urbanization and industrialization. Is making the field applicability of this method even further.

Fourth, despite the relatively low cost of construction, the California method requires a considerable amount of management effort, such as weakness in conservative and preservative power, making it easy to be exposed to drought, and frequent fertilization and watering.

Fifth, the PURR-wick system is always used in climatic environments such as Korea, where 50 ~ 60% of annual precipitation is concentrated over 3 ~ 4 months in summer and the maximum rainfall per hour is 145mm and the maximum rainfall is 47.2mm for 10 minutes. The forced drainage system is not necessarily required, and it is a problem that the drainage method by gravity is not considered at all in the normal rainfall environment except during heavy rains.

Sixth, the conventional techniques have been to form the ground of the stadium on the ground of most natural soils, causing erosion of the surface of the stadium caused by the intensive pressure of the grass management equipment and athletes.

Seventh, the conventional technologies are provided with a separate system for the watering / drainage facilities, overlapping the material costs and construction costs, the overlapping investment costs occur.

The present invention has been made to solve the above problems, and has the following object.

First, forced drainage is possible in case of heavy rain during summer, and self-weight and forced drainage to remove surface water by gravity is available for normal rainfall, thus promoting grass growth and improving stadium performance. It is to provide a grass stadium using the ground and its construction method.

Secondly, to provide a grass field and a construction method using a subsidiary ground adopting a grass root support to improve the pressure resistance, drainage and ground stability and to improve the growth of grass for improving the performance of the stadium.

Third, to reduce the construction cost and management cost of the stadium is to provide a grass field and a construction method using the auxiliary ground to improve the pressure resistance, drainage and water retention, while the structure of the stadium cross section is simple.

Fourth, to provide a grass stadium and its construction method using the auxiliary ground that can significantly reduce the amount and cost of stadium construction aggregates and materials used in the prior art in preparation for the rise in aggregate costs due to aggregate supply and demand shortage.

Fifth, in order to improve the performance of the winter or cold season stadium, and to provide a grass stadium and the construction method using the sub-ground to adopt the ground insulation means to prevent freezing of the ground of the stadium and to develop the growth of grass.

Sixth, in order to prevent healthy diseases and physiological disorders (high phenomena) of turf generated when the maximum temperature of the high temperature and high humidity is between 35 and 40 ° C, a cold storage means is adopted to maintain healthy growth of the high temperature and high humidity humidifier. It is to provide a grass stadium and the construction method using the auxiliary ground.

Seventh, in order to reduce the cost of duplication of water supply / drainage facilities and materials, the water supply / drainage and heat / cooling systems are integrated into one system to present the stadium and its construction method, which not only reduces costs but also improves the efficiency of facility management. have.

1 is a schematic view showing a cross section of a conventional turf golf course,

2 is a cross-sectional view showing a watering system of a conventional lawn,

Figure 3 is a schematic diagram showing a piping state for the pipe / drainage of the turf stadium of the present invention,

4 is a cross-sectional view of the present invention grass field,

Figure 5 is a schematic diagram showing the main part of the pipe piped to the grass pitch of the present invention,

6 is a schematic view showing a sensor unit employed in the turf field of the present invention;

7 is a schematic view for explaining a concrete pouring state,

8 is a cross-sectional view showing a grass roots.

* Explanation of symbols for main parts of the drawings

30.Ground 40.Concrete

41.Metal net 50 ... grass roots

51 ... lattice net 52 ... reticulated tissue

60 pipe 61 pipe

62 ... rowing pipe 62a ... handmade

70 filter element 100 grass

112 ... Water supply valve 122 ... Open / close valve

131,132 Drain valve 130 Drain pump

140 ... Sensor Unit

The grass stadium using the auxiliary ground of the present invention to achieve the above object is to be stopped in a certain depth, the pipe is formed in a predetermined pattern on the ground of the ground and the compacted ground, and a plurality of manual work is formed on the outer circumferential surface, and the compacted stadium is fixed to the bottom of the pipe It is characterized in that it comprises an auxiliary ground provided with a predetermined thickness on the ground, a grass roots formed on the upper surface of the auxiliary ground and the pipe pipe, and a grass formed on the upper surface of the grass roots.

The stadium of the present invention further includes a heat exchange fluid stage for circulating heat exchange fluid in the pipe, and the heat exchange fluid stage includes a heat exchange fluid storage tank for storing a low temperature or high temperature heat exchange fluid, and a heat exchange fluid from the heat exchange fluid storage tank to the pipe. It has a structure provided with a heat exchange pump to circulate.

In addition, a water supply pump and a water supply storage tank for supplying water to the pipe, a drain pump for draining water from the pipe and a drain opening and closing valve is further provided.

The auxiliary ground is concrete, and the concrete is further provided with a metal net for preventing cracks.

In addition, in order to prevent the cracking of the concrete is divided into predetermined areas by the elastic body in the stadium ground, it may be composed of a structure in which the concrete is poured in each divided space.

The outer peripheral surface of the pipe is further provided with a filtration member for preventing the inflow of foreign matter through the hand.

In addition, the pipe is provided with a plurality of column pipes provided at regular intervals in the longitudinal direction of the stadium, and horizontal column pipes provided at regular intervals in the transverse direction of the stadium and in communication with each other at a portion intersecting the column pipes.

The concrete is installed such that a downward slope of 1.5 to 3% is formed from both the centers of the rectangular grounds in the rectangular / horizontal pipe arrangement toward both the horizontal pipes. Drainage is made smoothly by manual permeation along the concrete ground on the downward slope.

In the turf field of the present invention, the turf grass zone is formed by mixing 60 to 80% by weight of sand having a thickness in the range of 0.25 to 1.0 mm, inorganic or organic soil improving agent, and a plurality of lattice nets made of plastic or synthetic fiber. , 20 to 50 mm from the top surface of the lawn sprinkler is characterized in that the network tissue further comprises a plastic or synthetic fabric.

In addition, the housing is fixed to the auxiliary ground and has a filter net for passing the water through the outer periphery and filters the foreign matter, a guide rod fixed up and down long inside the housing, and slidably coupled to the guide rod and floating in water And a control unit for controlling the operation of the water supply pump and the drain pump according to a signal of the upper and lower sensors located on the movement path of the float and detecting the upper and lower positions of the float. It is characterized by.

The construction method of the present invention turf stadium to achieve the above object is to stop and compact the ground by throwing the ground to a certain depth; Piping a pipe having a plurality of handmade holes formed on an outer circumferential surface of the compacted ground in a predetermined pattern; Forming an auxiliary ground with a predetermined thickness on the compacted ground to secure the bottom of the pipe; Installing a filtration member on an outer circumferential surface of the pipe so that water of the exposed pipe is not blocked; Creating a lawn sprinkler with a predetermined thickness on the auxiliary ground and the pipe top surface; It characterized in that it comprises the step of forming a grass on the grass roots upper surface.

In addition, when the auxiliary ground is concrete, further comprising the step of installing a metal net to be embedded in the concrete to be poured before the step of placing the concrete.

In the piping step, a plurality of vertical pipes are piped at regular intervals in the longitudinal direction of the stadium, and a plurality of horizontal pipes communicating with each other at portions intersecting the vertical pipes at regular intervals in the transverse direction of the stadium are characterized in that the pipes. .

In addition, the auxiliary ground is installed such that a downward slope of 1.5 to 3% is formed from both the centers of the rectangular ground in the rectangular shape in the vertical / horizontal pipe arrangement toward both the horizontal pipes. Drainage is made smoothly by manual permeation along the concrete ground on the downward slope.

The grass roots are formed by mixing sand, inorganic or organic soil modifiers, and a plurality of lattice nets made of plastic or synthetic fibers, and made of plastic or synthetic resin 20-20 mm below the surface of the grass roots. It is characterized by further installing the network.

The sand is composed of 3 to 5% of residues 3 to 5% by weight, 5 to 10% of polar irradiation of 1 to 2 mm, 5 to 10% of heavy sand and 0.25 to 1.0 mm of irradiation, and 15 to 25% of fine yarn of 0.1 to 0.25 mm , 5 to 10% of 0.05 to 0.1 mm microfiber, 3 to 6% of 0.002 to 0.05 mm fine, and 3% or less of clay less than 0.002 mm.

The soil improver is a substance composed of one or two or more selected from the group of peat moss, peat, pulverized bark, rice hull, sawdust, zeolite, calcined clay or diatomaceous earth , pearlite, polymer soil improver, 1 to 8% by weight. It is characterized in that the mixture.

The lawn sprinkler is characterized in that consisting of a thickness of 250 ~ 300㎜ on the auxiliary ground.

The lattice net is characterized by mixing 0.10 to 4.0 kg per 1 m 3 of sand as pieces of 50 to 100 mm in size.

In addition, the grass turf has a thickness of 250 to 300 mm, a permeability coefficient of 130 to 290 mm / hr, total porosity of 35 to 60%, large porosity of 15 to 30%, capillary porosity of 20 to 30%, and surface hardness. It is characterized by being 16-23 mm and pH 5.5-7.0.

When the auxiliary ground is concrete, the concrete is a mixture and a hardened body for bonding aggregates and forming aggregates by a pool of inorganic or organic binders, and cement concrete, lime concrete, gypsum concrete, magnesite cement concrete, asphalt concrete, polymer cement It is characterized in that the mixture using a binder selected from the group of concrete, resin concrete, polymer impregnated concrete and its cured product.

In addition, the concrete is a cement concrete, a mixture of at least one of Portland cement, blast furnace cement, silica cement, alumina cement, blending water, aggregate and admixture, characterized in that the hardened body having a minimum strength of 210 kg / ㎠ .

The admixture is at least one selected from admixtures consisting of surfactants, water reducing agents, high performance water reducing agents, fluidizing agents, accelerators, retardants, rust inhibitors, thickeners, waterproofing agents, and antifreeze groups, and admixtures comprising fly ash, slag powder, and volcanic ash groups. The material is characterized by mixing at a ratio of 0.2 to 10%.

In addition, the aggregate is characterized in that the grain size is 0.08 ~ 38mm.

In addition, the auxiliary ground is provided with a sensor for detecting the amount of immersion in the grass roots, and according to the detection signal of the sensor characterized in that the water supply and drain pump for supplying or draining water through the pipe do.

In addition, the heat exchange fluid pipe is connected to the pipe to be connected to the pipe, and the heat exchange fluid pipe is characterized in that further install a heat exchange pump for circulating the heat exchange fluid.

In addition, the auxiliary ground is concrete and the concrete is characterized in that the thickness of 80 ~ 250mm.

According to the characteristics according to the present invention, the grass field and the construction method of the present invention by forming a secondary ground of a certain thickness on the ground to prevent unequal sedimentation and stability of the ground and to supply / drain through the pipe having a plurality of manual It is possible. Drainage is naturally possible by natural drainage by gravity and forced drainage by drainage pumps. In addition, by selectively circulating the heat exchange fluid of cold / hot water it is possible to improve the grass protection and playing field performance in the cold or cold. In addition, by providing the network structure on the upper side of the grass roots, it is possible to quickly recover from damage by protecting the crown and root portion of the grass against external impact applied to the grass.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the embodiments of the present invention, a turf athletic field is a soccer field, a football field, a baseball field, a school playing field, a golf putting green. (putting green for golfcourse, training camp, or other playing field made of natural grass.

In addition, in the embodiment of the present invention as an auxiliary ground, concrete (concrete) will be described as an example, and in addition to the concrete, a binder of inorganic (cement, lime, gypsum, etc.) or organic (asphalt, resin, plastic, etc.) Mixtures and hardened bodies thereof for bonding and shaping aggregate by means of phosphorus paste can be used.

Grass field of the embodiment of the present invention is a bottom surface irrigation system and gravity / forced drainage system consisting of a concrete piped in a predetermined pattern on the concrete surface, as a secondary ground on the excavated ground to a certain depth, and the gravity / forced drainage system, and It is composed of a connected underground thermal / cold storage system, a grass sprinkler formed on the concrete and pipe, and a grass formed on the grass sprinkler.

3 and 4 showing the turf playing field of the embodiment of the present invention, which is piped in a predetermined pattern on the ground of the stadium 30 which is stopped and compacted to a certain depth and has a plurality of water holes on the outer circumferential surface thereof. 60, and the concrete 40 placed on the ground 30 so that the bottom of the pipe 60 is fixed, and the grass sprinkling table 50 formed on the concrete 40 and the upper surface of the pipe 60, , The grass sprinkler 50 is made of grass 100 is formed on the upper surface.

The pipe 60 is provided with a plurality of column pipes 61 provided at regular intervals in the longitudinal direction of the stadium, and a horizontal row provided at regular intervals in the transverse direction of the stadium and communicating with each other at a portion intersecting with the column pipes 61. It is made of a pipe 62, a plurality of holes (62a) are formed on the outer peripheral surface of the row pipe (62).

The water supply and drainage to be described later through the water (62a) is made, the drainage is made of natural drainage by gravity and forced drainage by the drainage pump.

The concrete 40 is installed such that a downward slope of 1.5 to 3% is formed from both the centers of the rectangular grounds in the rectangular / horizontal pipe arrangement toward both the horizontal pipes. Drainage is made smoothly by permeating into the hand 62a along the concrete surface of the downward slope.

As shown in Figure 3, the column pipe 61 is provided with a water supply tank 110, a water supply pump 111 and a water supply valve 112 for forced water supply, and also a drain pump 130 for drainage and Drain valves 131 and 132 are provided.

The pipe 60 is provided with a heat exchange fluid stage for circulating a heat exchange fluid having a high temperature or a low temperature. The heat exchange fluid stage includes a heat exchange fluid storage tank 120 for storing a low temperature or high temperature heat exchange fluid, a heat exchange pump 121 for circulating heat exchange fluid from the heat exchange fluid storage tank 120 to the pipe 60, and an open / close valve ( 122).

In addition, the surface of the concrete 40 is provided with a sensor unit for detecting the amount of water in the ground. 3 and 6, the sensor unit 140 is installed in a plurality of places in the stadium, the housing 141 is provided with a filter net 141a for passing water to the outer periphery and filter foreign matter such as sand, A guide rod 142 fixed up and down long in the housing 141, a float 143 slidably coupled to the guide rod 142 and floating in water, and a movement path of the float 143. Located in the upper and lower sensors 144, 145 for detecting the upper and lower position of the float 143, and the water supply pump 111 and the drain pump 130 in accordance with the signal of the upper and lower sensors (144, 145) A control unit 150 for controlling the operation of the) is provided.

On the other hand, to prevent cracking of the concrete 40, the metal mesh net 41 is placed in the ground 30 before the concrete 40 is placed. The metal net 41 may be manufactured in the form of a lattice, and enhances strength.

As shown in FIG. 7 to prevent cracking of the concrete 40, the stadium ground 30 may be divided by a predetermined area by an elastic body 45, and the concrete 40 may be poured into each divided space. have. In this case, even when the concrete 40 is expanded, the crack is prevented by the expansion and contraction of the elastic body 45.

As shown in FIG. 5, the outer circumferential surface of the pipe 60 is covered with a filtration member 70 for preventing the inflow of foreign matter such as sand of the grass roots 50 to be described later through the hand 62a. . The filtration member 70 is suitable for the weight of 200 ~ 700g per square meter as a synthetic fiber.

The grass turf 50 is formed by mixing 60 to 80% by weight of sand having a thickness ranging from 0.25 to 1.0 mm, an inorganic or organic soil improving agent, and a plurality of lattice nets 51 made of plastic or synthetic fibers. . In addition, the network tissue 52 made of plastic or synthetic fabric is installed in the 20 ~ 50mm portion from the upper surface of the grass turf 50.

The grass 100 is formed on the upper surface of the lawn sprinkler 50.

Grass field having the above configuration by placing the concrete 40 on the ground 30 to form a foundation ground, can effectively prevent ground subsidence and improve the pressure resistance.

In addition, when the lawn is damaged by the pressure or divot (divot) of the athletes and equipment, as shown in Figure 8, the grass roots are protected by the network 52.

On the other hand, the rain water drainage may be natural drainage by gravity and forced drainage by the drainage pump (130). Natural drainage is to be drained through the hand 62a, forced drainage is forced drainage by the driving of the drain pump 130.

During forced water supply, the on / off valve 122 and the drain valve 131 and 132 are closed and the water supply valve 112 is opened so that water is supplied through the water hole 62a of the pipe 60 by driving the water supply pump 111. do.

On the other hand, to prevent freezing by supplying heat exchange fluid which is hot water in winter, and to prevent heat damage by supplying heat exchange fluid which is cold water in winter. When the heat exchange fluid is supplied, the water supply valve 112 and the drain valve 131 and 132 are shut off and the shutoff valve 122 is opened.

In addition, the water supply pump 111 and the drain pump 130 can be automatically controlled by the detection by the sensor unit 140.

That is, the watering system of the stadium starts when the float 143 reaches the lower sensor 145 by the sensor unit 140 installed in the lawn sprinkler 50 and the electric signal detected by the sensor is applied to the controller 150. do.

Bottom water is automatically opened by the control unit 150, the water supply valve 112, the closing valve 122, the drain valve (131, 132) by closing the water in the vertical / horizontal row of grid pipe 60 network Supplying along the pipe (61, 62) and wet the grass sprinkler 50 through the hand (62a) of the transverse pipe (62). The water supplied through the hand 62a moistens the entire lawn sprinkler 50 by capillary action of sand.

When the float 143 of the sensor unit 140 is raised to reach the upper sensor 144, the electrical signal generated from the sensor is transmitted to the controller 150 to close the water supply valve 112, thereby ending the bottom water irrigation system.

The water of the grass roots 50 reached to the saturation state by the bottom irrigation water provides the required moisture to the grass while maintaining the water table with a constant surface tension. When gravity exceeds the surface tension, water is permeated into the hand 62a, flows along the transverse pipe 62 and the column pipe 61, and drains to the open drain valve 131, thereby naturally operating the gravity drainage system. do.

In the case of gravity drainage, all the valves 112, 122, and 132 except the drain valve 131 are closed. When the water supplied to the grass roots 50 is consumed in the growth of grass, evaporated into the atmosphere, or discharged by gravity drainage, the float 143 of the ground surface sensor unit 140 reaches the target level by the falling motion. The bottom irrigation system is operated again, and the bottom irrigation and self draining water are repeated. Forced drainage by the drainage pump 130 is rarely required except in the case of an underwater game during heavy rains in summer, and the rainfall is smoothly drained by the gravity drainage system.

On the other hand, the construction method of the lawn stadium of the embodiment of the present invention is as follows.

First, the ground of the stadium is excavated to a certain depth to stop and compact, and a pipe in which a plurality of manual holes are formed on the outer circumferential surface of the ground is piped in a predetermined pattern.

Thereafter, the concrete is poured on the ground to fix the bottom of the pipe, and the filtering member is installed on the outer circumferential surface of the pipe so that the manual work of the exposed pipe is not blocked after the poured concrete is cured.

After that, the grass sprinkler is formed on the concrete and the pipe pipe upper surface with a predetermined thickness, and the grass is formed on the grass sprinkler upper surface.

Before the concrete is poured, the metal net is installed to be embedded in the concrete to be poured. This metal net prevents the cracking of the concrete.

The pipe of the pipe is a plurality of vertical pipes at regular intervals in the longitudinal direction of the stadium, and a plurality of horizontal pipes in communication with each other at a portion intersecting the vertical pipes at a predetermined interval in the transverse direction of the stadium.

The concrete is installed such that a downward slope of 1.5 to 3% is formed from both the centers of the rectangular grounds in the rectangular / horizontal pipe arrangement toward both the horizontal pipes. Drainage is made smoothly by permeating into the hand 62a along the concrete surface of the downward slope.

The grass roots are formed in the thickness of 250 ~ 300㎜ on the concrete ground, mixed with sand, inorganic or organic soil improver, a plurality of lattice-type net of plastic or synthetic fibers, the grass roots A network structure made of plastic or synthetic resin is further installed 20 to 50 mm below the label surface.

The lattice net is a piece of 50 to 100 mm in size and mixes 0.10 to 4.0 kg per 1 m 3 of sand. These lattice nets improve drag resistance and drainage and stabilize the ground.

The network structure protects the crown and root zone of the turf from an external impact applied from the turf upper surface.

The sand is composed of 3 to 5% of residues 3 to 5% by weight, 5 to 10% of polar irradiation of 1 to 2 mm, 5 to 10% of heavy sand and 0.25 to 1.0 mm of irradiation, and 15 to 25% of fine yarn of 0.1 to 0.25 mm 5 to 10% of microfibers, 0.05 to 0.1 mm, 3 to 6% of 0.002 to 0.05 mm fine yarn, and 3% or less of clay less than 0.002 mm.

The soil improver is a substance composed of one or two or more selected from the group of peat moss, peat, pulverized bark, rice hull, sawdust, zeolite, calcined clay or diatomaceous earth, pearlite, polymer soil improver, 1 to 8% by weight. Is mixed.

The grass roots are formed in the thickness of 250 ~ 300㎜, the permeability coefficient is 130 ~ 290㎜ / hr, total porosity is 35 ~ 60%, large porosity 15 ~ 30%, capillary porosity 20 ~ 30%, surface hardness It is set to 16-23 mm and pH 5.5-7.0.

In addition, the concrete is a mixture and a hardened body to combine and shape the aggregate by the pool of inorganic or organic binder, cement concrete, lime concrete, gypsum concrete, magnesite cement concrete, asphalt concrete, polymer cement concrete, resin concrete, It is constructed from a mixture using one binder selected from the group of polymer-impregnated concrete and its cured product.

On the other hand, the concrete is a cement concrete, a mixture of at least one of Portland cement, blast furnace cement, silica cement, alumina cement, the number of blending, the aggregate thickness and the admixture having a particle thickness of 0.08 ~ 38 mm, the minimum strength is 210kg / It can also be constructed with a cured product of cm 2.

The admixture is at least one selected from admixtures consisting of surfactants, water reducing agents, high performance water reducing agents, fluidizing agents, accelerators, retardants, rust inhibitors, thickeners, waterproofing agents, and antifreeze groups, and admixtures comprising fly ash, slag powder, and volcanic ash groups. The materials are mixed in 0.2 to 10% proportions.

The concrete surface is provided with a sensor for detecting the amount of water in the grass sprinkler, and a water supply pump and a drain pump for supplying or draining water through the pipe in accordance with the detection signal of the sensor.

In addition, a heat exchange fluid pipe is connected to and installed to communicate with the pipe, and a heat exchange pump for circulating the heat exchange fluid is installed in the pipe.

Lawn stadium as described above and its construction method has the following effects.

First, the water formed on the surface of the stadium by the rainfall is pitched to the surface of the stadium to maintain the ground surface in the grass roots 50 with a constant surface tension until the grass roots 50 reaches the saturation point.

When the water of the grass roots 50 reaches the saturation point, the surface tension is collapsed by gravity, and the water is drained through the water hole 62a of the grid-type pipe 60 network below. When it is necessary to forcibly drain the stadium surface water according to the maximum amount of rainfall per hour or the maximum amount of rainfall for 10 minutes, the drainage pump 130 is operated to drain the water forcibly.

At this time, the drain valves 131 and 132 are opened, and the water supply valve 112 and the heat exchange fluid open / close valve 122 are closed.

On the other hand, in the case of watering, when water is supplied through the hand 62a of the grid-type pipe 60 network, which is a bottom watering means formed on the concrete 40 ground, the water is applied to the capillary action of sand, which is a component of the grass planting layer. As a result, water is absorbed and supplied to the grass 100 on the surface of the playing field from the bottom of the grass turf 50.

Looking at the grass stadium and the construction method of the embodiment of the present invention described above in more detail.

First, the stadium ground 30 is excavated to a prescribed depth to stop horizontally and compact. The excavation area of the stadium ground 30 can be excavated in the range of 70-80 m in width, 100-120 m in length, and about 330-550 mm in depth. Excavating the stadium ground (30) too deep may cause the concrete (40) ground to be thick, but increasing the amount of soil to be removed. Can be. In the embodiment of the present invention, the excavation and soil treatment are carried out on the scale of 77m × 112m × 400mm.

The grass roots can be constructed with a thickness of 250-300 mm and the concrete 40 on the ground 30 can be constructed with a thickness of 80-250 mm.

In the next step of processing the excavated soil, the ground 30 is well ground and the leveling is continued with the laser equipment.

After the step is poured concrete 40 on the ground (30). As described above, the concrete 40 ground on the ground 30 may be configured to a thickness of 80 ~ 250㎜. In order to prevent radial cracking of the concrete 40 ground, a method of using a metal net mesh 41 coupled with reinforcing wire and wire mesh in the concrete 40 ground, and the entire concrete 40 ground structure as shown in FIG. A partition wall is provided at (45) to divide the structure into a plurality of structures, and a method of using both of the above methods can be used.

The gap between the evenly divided concrete 40 ground is inserted into wood, rubber or other elastic body 45 so that even if the concrete 40 ground is repeatedly contracted and expanded, deformation or microcracks do not occur and leaks.

After the above step, the horizontal pipe 62 and the vertical pipe 61 are connected and installed in a lattice structure. Grid network 60 consisting of a row pipe (62) and a column pipe (61) is provided to the grass roots 50 as the main passage for the bottom water and gravity / forced drainage.

The hand 62a of the horizontal row pipe 62 is preferably in the range of 0.15 to 0.23 mm in width and 19 to 32 mm in length, and the porosity is preferably 4 to 7%. The vertical / horizontal pipes 61 and 62 are each configured to be connected to each other by fusion or socket by using a cross-shaped pipe or a tee-shaped pipe at the vertical intersection so that the entire water pipe / drainage pipe is connected by one lattice pipe network. do.

After the above step, the concrete is poured, pressed and cured between the metal net 41 or the elastic body 45 and between the longitudinal / horizontal pipes 61 and 62.

In the embodiment of the present invention, concrete is a binder of inorganic matter (cement, lime, gypsum, etc.) or organic matter (asphalt, resin, plastic, etc.) despite the definition of physics or correlation or law. The mixture and the hardening body which combine and shape aggregate by a phosphorus paste.

In detail, the types of concrete according to the binder, the inorganic binder concrete, such as cement concrete, lime concrete, gypsum concrete, magnesite cement concrete, etc., the organic binder concrete, asphalt concrete, polymer cement concrete, resin concrete, polymer impregnated concrete, etc. There is this.

In one embodiment, one or more concrete selected from the group of binders of the inorganic concrete and the organic concrete may be used. For example, as a countermeasure for the cracking of cement concrete, a middle layer structure of cement and asphalt concrete can be adopted by using cement concrete at the bottom of the artificial ground and asphalt concrete at the top thereof.

In the embodiment of the present invention will be described with respect to the cement concrete. Concrete is composed of cement, blended water, aggregate, and admixtures (mixers and admixtures). Use only concrete materials that comply with recognized quality standards (eg KS). The cement may include portland cement, blast furnace cement, silica cement, alumina cement and the like, but is preferably portland cement.

The formulated water should be free from impurities that affect the quality of concrete or steel. As the aggregate, a coarse aggregate having a particle size of 0.08 to 5 mm and a coarse aggregate having a particle size of 5 mm or more are used, but the maximum dimension of the coarse aggregate is preferably not exceeding 38 mm. Aggregates should be composed of intense minerals that are not exposed to weathering. Admixtures are materials that are added to give concrete properties or to improve quality.

In the concrete admixture of the embodiment of the present invention, an admixture such as a surfactant, a water reducing agent, a high performance water reducing agent, a fluidizing agent, an accelerator or a retarding agent, a rust preventive agent, a thickening agent, a waterproofing agent, and an antifreeze agent may be used, and an admixture such as fly ash, slag powder, and volcanic ash. Can be added. Admixtures are in compliance with the recognized standards. Depending on the time and conditions of the admixture, admixtures are mixed with 1% or less of cement and 5-10% of admixtures.

Concrete must go through a combination of design, material mixing, stirring, conveying, placing, compacting and curing to form a concrete ground suitable for the purpose of the present invention. Concrete mix design combines cement, fine aggregate and coarse aggregate, water, admixture, or admixture in proportion to meet the required strength, durability, watertightness, durability, workability, and so on. It is decided to get it.

The mixture of these materials is blended in a proportion of 15 to 20%, 7 to 14% in absolute volume and 66 to 78% in aggregate. More specific formulation designs of concrete are well known in the art. However, for the purpose of the present invention, the strength of the concrete ground is required to be high strength and should be designed to have at least 210㎏ / ㎠ on the basis of 28 days. Shortening construction period Other times, if required, it can be cured more quickly by fumigation curing or electric curing.

At the same time as or after the concrete pouring, the exposure level and the left and right side slopes of the transverse pipe 62 in which the hand 62a is formed are formed. The exposure of the horizontal row pipe 62 of the hand from the concrete 40 ground and the slope of the left and right sides are related to the efficiency of self-weight / forced drainage and bottom irrigation of the stadium ground. The more exposed surfaces of the pipe 60, the greater the slope of the surface of the concrete 40, the better the self-weighting efficiency.

After the step is installed filtration member 70 on the top of the manual horizontal pipe (62) exposed to the ground concrete (40). The filtration member 70 may be a nonwoven fabric or woven fabric having a m 2 weight of 200 to 700 g as a synthetic fiber. The filtration member 70 not only prevents the mixing of the grass roots 50 into the transverse pipe 62 through the microfibers, silt and clay hand 62a of 0.15 mm or less, but also between the grass roots 50 and the transverse pipes. To adjust the permeability.

After the step to form an underground water level sensor unit 140 and the grass sprinkler 50 on the concrete (40) ground.

The ground of the concrete 40 is provided with a grass root zone (rootzone; 50) having a thickness of 250 to 300 mm. In the case of lawn grass, the request from the grass growth side can be summarized as the resistance to drainage and water retention, the protection of the underground growth of the grass, and the ventilation of the grass management equipment and athletes. Esau's request is concentrated on maintaining a constant surface hardness of the stadium ground, preventing uneven settlement of the stadium, and preventing solidification of mixed soil.

In order to meet the request of such stadium ground or grass roots 50 of the embodiment of the present invention, sand, inorganic or organic soil modifier, plastic or A mixture comprising a lattice net of synthetic fiber pieces and a network structure of plastic or synthetic fabric, the composition being 250-300 mm thick on the ground of concrete 40.

The composition of the grass roots (50) mixture is to improve the performance of the stadium through the stabilization of the resistance and drainage through stabilization of the stadium ground, and to quickly recover the damaged grass and protect the grass through the underground growth protection of the lawn. It is advantageous for promoting growth.

The sand is 2% or more, 5% or less of residue, 10% or less of 1 ~ 2mm pole irradiation, 60 ~ 80% by weight of 0.25 ~ 1.0mm and 15-25% of fine yarn of 0.1 ~ 0.25mm, 0.05 5-10% of fine microfiber yarns, 6% or less of 0.002 to 0.05mm fine yarn, 3% or less clay less than 0.002mm. Sand is preferably a steel sand containing silica (SiO 2) as a main component, and depending on the conditions, sea sand washed with salt or selected processed sand can be used.

The sand is excellent in drainage, but because it has only physical properties that are poor in water retention and bobbin power, various organic-inorganic soil modifiers may be used for the purpose of improving water retention and bobbin for promoting healthy grass growth.

As organic soil improver, pit moss, peat, pulverized bark, rice husk, sawdust and other organic products can be used. Zeolite, calcined clay or calcined diatomaceous earth, pearlite, polymeric soil modifier may be optionally used for the inorganic soil modifier.

In addition, the grass roots 50 is provided with a network 52 of plastic or synthetic resin at a depth of about 20 to 50 mm from the surface of the stadium to reinforce the hardness of the ground of the stadium, to protect the underground growth of the lawn, and to maintain the durability of the foot resistance. At a depth of 50 to 300 mm from the surface of the stadium, a lattice net 51 made of a piece of plastic or synthetic fabric is mixed with sand.

The network 52 promotes recovery of turf damaged by foot pressure or divot of athletes and equipment in the topsoil layer of the arena where concentration and depression are concentrated. The grid net 51 is evenly mixed throughout the grass roots 50 to provide increased pressure resistance and prevent soil solidification, improved soil porosity, increased water retention and bobbin power, as well as enhanced hardness of the ground.

The mixture of grass roots 50 thus prepared has an ideal saturation permeability of 130 to 290 mm per hour, total porosity of 35 to 60%, large porosity of 15 to 30%, capillary porosity of 20 to 30%, and surface hardness of 16. It has a physicochemical property of -23 mm and pH of 5.5-7.

The hourly saturation permeability coefficient of the grass roots 50 is calculated based on the maximum precipitation of 145 mm per hour and the maximum precipitation of 47 mm for 10 minutes.

The sensor unit 140 for controlling the groundwater surface at the same time as the composition of the lawn sprinkler 50 is installed in the lawn sprinkler 50. 2 to 4 sensor units 140 may be installed.

The sensor unit 140 is connected to a controller and a computer programmed by a cable to automatically measure the groundwater surface of the grass sprinkler 50 to automatically operate the water supply pump 111 in order to maintain the target ground water surface to maintain the bottom water. Or to operate the drainage pump 130 to perform forced drainage.

The sensor unit 140 having the above-described configuration is installed at a point 260 to 350 mm from the surface of the stadium among the concrete 40 ground and the grass roots 50.

The grass roots 50 is a natural grass field is completed by breeding the natural grass in the grass seed or crawling diameter, underground diameter, powder mirror, plug and roll type turf transplantation and other planetary / silent methods.

Grass species are Zoysiagrass in warm-land grass, Kentucky bluegrass and Perenial ryegrass, Bentgrass, Tall fescue and mixed grasses (Blends, or mixtures of different species of the same species) Mixtures, a mixture of seeds belonging to In order to quickly create a natural turf space, the stadium can be used immediately within 1 to 3 months by transplanting the grass produced by the first type of rolled turf.

On the other hand, the heat exchange fluid stage of the embodiment of the present invention is to prevent the freezing of the stadium surface and to promote the growth of the grass by keeping the ground during the cold weather stadium. In order to prevent freezing of the surface of the cold weather and to promote the growth of grass, the target temperature of the ground is 10 ~ 29 ℃ at 100 ~ 150㎜ point from the surface of the stadium where the roots are concentrated, and to increase the thermal efficiency, The thickness of 50) is preferably 250 mm. To this end, in the embodiment of the present invention, the ground fluid is warmed by circulating the heated fluid (eg, heated air, steam, etc.) to the longitudinal / lateral pipes 61 and 62.

On the other hand, the heat exchange fluid stage can be converted and utilized as underground cold storage means by circulating the air cooled by using the ice heat storage system through the longitudinal / transverse pipes (61, 62). In the mainland grass, which is the mainstream of the stadium grass, the possibility of a disease is further increased in the high temperature and high humidity of the temperature of 35 to 40 ° C, and further, the growth disorder (high phenomenon) occurs.

By circulating the air cooled in the warming means in the high temperature and high humidity, the ground temperature of the underground root zone of the grass roots 50 is maintained at 10 to 29 ° C. to ensure the healthy growth and development of the high temperature and high humidity grass, and to efficiently operate the facility. It is to plan. However, whether or not to adopt the ground insulation / cold storage means depends on the use of the stadium and the presence of ground insulation / cold storage means is not an essential element of the present invention configuration. For example, school grounds and social sports facilities, which do not involve the management of professional managers, tend to have a low tendency to use the winter stadiums, and thus, it is not necessary to install underground insulation / cooling means.

The present invention as described above is not limited only to the above embodiments, it goes without saying that many modifications can be made without departing from the spirit and scope of the present application.

First, the forced drainage method by mechanical means can be applied to the maximum rainfall per 10 minutes and hourly during heavy rains, and the self-weighting and forced drainage system which removes surface water by gravity for normal precipitation can be promoted. Improve the performance of the stadium.

Second, by mixing the grid net in the grass roots, it is effective in securing the pressure resistance, drainage and ground stability for improving the performance of the stadium and the growth of grass. In addition, by providing the reticular structure in the upper layer of the grass roots can protect the grass roots due to external impact.

Third, the present invention avoids excessively multi-layered structure to reduce the construction cost and management cost of the stadium, and by using concrete ground instead of natural ground, the structure of the cross-section of the stadium is relatively simple but does not have an uneven settlement phenomenon and ensures stability and robustness reflecting composition. Can be.

Fourth, the present invention significantly reduced the amount and cost of stadium construction aggregates and materials required in the prior art in preparation for the rise of aggregate costs due to the aggregate supply and demand by replacing the stadium ground with concrete ground.

Fifth, the present invention is to install the heat exchange fluid stage for the thermal insulation / cold storage of the ground to improve the performance of the winter training camp or cold weather stadium performance and the development of turf growth, and the disease on the grass of summer hot and humid It prevents the phenomenon of bundling and cold and maintains healthy growth of high temperature and high humidity grass.

Sixth, the present invention integrates the conventionally configured system into a single system to simultaneously perform the functions of watering / drainage and ground insulation / cold storage in a single system to improve the construction cost and the efficiency of the stadium management.

Claims (27)

A pipe formed with a predetermined pattern on the ground of the stadium which has been stopped and fixed to a certain depth and has a plurality of manual works formed on its outer circumferential surface; An auxiliary ground having a predetermined thickness on the ground to fix the bottom of the pipe; A grass sprinkler formed on the auxiliary ground and the pipe top surface; Turf playing field using the auxiliary ground, characterized in that it comprises a grass that is formed on the grass sprinkler upper surface. The heat exchange fluid stage of claim 1, further comprising a heat exchange fluid stage for circulating a heat exchange fluid in the pipe, wherein the heat exchange fluid stage includes a heat exchange fluid storage tank for storing a low temperature or high temperature heat exchange fluid, and the heat exchange fluid from the heat exchange fluid storage tank. Turf playing field using an auxiliary ground, characterized in that the heat exchange pump circulated in the pipe. The lawn stadium of claim 2, further comprising a water supply pump and a water supply tank for supplying water to the pipe, a drain pump for draining water from the pipe, and a drain valve. The lawn stadium according to any one of claims 1 to 3, wherein the auxiliary ground is concrete and the metal mesh net for preventing cracks is further provided in the concrete. 5. The turf playing field using the auxiliary ground according to claim 4, wherein the concrete is divided into predetermined areas by elastic bodies in the stadium ground, and the concrete is poured into each divided space. The lawn stadium of claim 4, further comprising a filtration member on the outer circumferential surface of the pipe to prevent the inflow of foreign substances through the hand. The pipe of claim 4, wherein the pipes include a plurality of vertical pipes provided at regular intervals in the longitudinal direction of the stadium, and a plurality of horizontal pipes provided at predetermined intervals in the transverse direction of the stadium and communicate with each other at a portion intersecting the vertical pipes. Turf playing field using the auxiliary ground, characterized in that it is provided with. According to claim 7, wherein the concrete is installed so as to form a downward slope of 1.5 to 3% from the center of each concrete ground partitioned in a rectangle by vertical / horizontal pipe arrangement toward the left and right row pipes, respectively. Grass stadium. According to claim 1, wherein the lawn grass is mixed with 60 to 80% by weight of sand in the range of 0.25 to 1.0mm thick, inorganic or organic soil improver, and a plurality of lattice-shaped net of plastic or synthetic fiber , Turf playing field using the auxiliary ground, characterized in that the network structure further comprises a plastic or synthetic fabric 20 to 50mm from the upper surface of the lawn sprinkler. 4. The housing of claim 3, further comprising: a housing having a filter net fixed to the auxiliary ground and allowing water to pass through the outer periphery and filtering foreign matter; a guide rod fixed vertically and long in the housing, and slidably coupled to the guide rod. And a float floating in the water, an upper and lower sensors positioned on the float's movement path to sense the upper and lower positions of the float, and a control unit controlling the operation of the water supply pump and the drain pump according to the signals of the upper and lower sensors. Turf playing field using the auxiliary ground, characterized in that it is provided with. In the construction method of the grass stadium using the auxiliary ground, Stopping and compacting the stadium ground to a certain depth; Piping a pipe having a plurality of handmade holes formed on an outer circumferential surface of the compacted ground in a predetermined pattern; Forming an auxiliary ground to a predetermined thickness on the compacted ground to secure the bottom of the pipe; Installing a filtration member on an outer circumferential surface of the pipe so that water of the exposed pipe is not blocked; Creating a lawn sprinkler with a predetermined thickness on the auxiliary ground and the pipe top surface; Lawn stadium construction method using the auxiliary ground, characterized in that it comprises the step of forming a grass on the grass roots upper surface. 12. The method of claim 11, wherein the auxiliary ground is concrete, and further comprising installing a metal net so as to be embedded in concrete to be poured before the concrete is poured. 12. The method of claim 11, wherein in the piping step a plurality of vertical pipes in the longitudinal direction of the stadium at regular intervals, and a plurality of horizontal pipes in communication with each other at a portion intersecting the vertical pipes at regular intervals in the transverse direction of the stadium. Lawn stadium construction method using an auxiliary ground, characterized in that the piping. 15. The auxiliary ground according to claim 13, wherein the auxiliary ground is installed such that a downward slope of 1.5 to 3% is formed from the center of each of the auxiliary grounds divided into rectangular sections by vertical / horizontal pipe arrangements toward the left and right row pipes. Lawn stadium construction method using. The method according to claim 11, wherein the grass turf is mixed with sand, inorganic or organic soil modifier and a plurality of lattice net of plastic or synthetic fiber, Grass field construction method using the auxiliary ground, characterized in that to further install a reticulated body made of plastic or synthetic resin 20 to 50 mm below the surface of the grass roots. The sand according to claim 15, wherein the sand is 2 to 3 mm fine brown, 3 to 5%, 1 to 2 mm polar irradiation 5 to 10%, 0.25 to 1.0 mm heavy sand and irradiation 60 to 80%, and 0.1 to 0.25 mm 15-25% of fine yarn, 5-10% of 0.05 ~ 0.1mm microfiber, 3-6% of 0.002 ~ 0.05mm fine, 3% or less of clay less than 0.002mm . 16. The soil improving agent according to claim 15, wherein the soil improving agent is one or two or more substances selected from the group consisting of peat moss, peat, crushed bark, chaff, sawdust, zeolite, clay or diatomaceous earth, vermiculite, pearlite, and polymer soil improver. The construction method of the lawn stadium using the auxiliary ground, characterized in that 1 to 8% is mixed as a reference. 18. The method of any one of claims 15 to 17, wherein the lawn sprinkler has a thickness of 250 to 300 mm above the subsidiary ground. 18. The method according to any one of claims 15 to 17, wherein the lattice net is a piece of 50 to 100 mm in size and mixes 0.10 to 4.0 kg per 1 m 3 of sand. . 18. The grass roots according to any one of claims 15 to 17, having a thickness of 250 to 300 mm, a permeability coefficient of 130 to 290 mm / hr, a total porosity of 35 to 60%, and a large porosity of 15 to 30%. A method of constructing a turf stadium using an auxiliary ground, characterized in that a capillary porosity of 20 to 30%, a surface hardness of 16 to 23 mm and a pH of 5.5 to 7.0. 12. The method of claim 11, wherein the auxiliary ground is concrete and the concrete is a mixture and a cured body for bonding and forming aggregates by means of a pool which is an inorganic or organic binder. Grass using secondary ground, characterized in that it is a mixture using a binder selected from cement concrete, lime concrete, gypsum concrete, magnesia cement concrete, asphalt concrete, polymer cement concrete, resin concrete, polymer impregnated concrete group and hardened body thereof. Construction method of the stadium. The method of claim 11, wherein the auxiliary ground is concrete and the concrete is cement concrete, At least one of Portland Cement, Blast Furnace Cement, Silica Cement, and Alumina Cement, and a mixture of water, aggregate, and admixture, and a method of constructing a turf arena using an auxiliary ground, characterized in that the cured body has a minimum strength of 210 kg / cm 2. . 23. The admixture of claim 22, wherein the admixture is composed of a surfactant, a reducing agent, a high performance reducing agent, a fluidizing agent, an accelerator, a retardant, a rust preventive agent, a thickening agent, a waterproofing agent, and an antifreeze agent, and an admixture comprising a fly ash, slag powder, and volcanic ash group. Method for the construction of a grass field using the auxiliary ground, characterized in that to mix at least one material selected from 0.2 to 10% ratio. The method of claim 22, wherein the aggregate has a grain thickness of 0.08 to 38 mm. 18. The method according to any one of claims 11 to 17, wherein a sensor for detecting the amount of inundation in the grass roots is installed in the auxiliary ground, and water is supplied or drained through the pipe according to a detection signal of the sensor. Construction method of the lawn stadium using the auxiliary ground, characterized in that the water supply pump and the drain pump is installed. The method of claim 25, wherein the heat exchange fluid pipe is connected to the pipe to communicate with the pipe, and a heat exchange pump for circulating the heat exchange fluid is further installed in the heat exchange fluid pipe. . 18. The method of any of claims 11 to 17, wherein the auxiliary ground is concrete and the concrete has a thickness of 80 to 250 mm.