JP3148117B2 - Lawn management method and management device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a management method and a management device for maintaining and promoting lawn growth, and more particularly to a management method and a management device for a lawn laid in an athletic stadium or the like.

[0002]

2. Description of the Related Art Facilities on which a lawn is laid include an athletic stadium and a golf course for sports such as baseball, soccer, and rugby. Recently, these facilities are easy to maintain and manage, so artificial grass is often laid.However, considering the necessity and safety in competition and the feel when using, natural grass is still excellent. ing.

[0003] This natural lawn is easily pained, and it is difficult to control water supply and drainage for growing. For this reason,
For example, a management device as shown in FIG. 5 has been proposed. This management device divides a water supply pipe a provided with a large number of diffusion holes for water supply into the soil below the lawn surface b as appropriate and buries it horizontally.
A water supply valve c is provided upstream of these water supply pipes a, and a control device d
By controlling the opening and closing of the water supply valve c, water is supplied from the water tank e by the pressure pump f to supply water.

As shown in FIG. 6, the lawn surface b has a sandy layer g.
The crushed stone layer h is provided below, and a water supply pipe a is buried in the crushed stone layer h. An impermeable sheet j is laid under the crushed stone layer h to block water. I have to. Then, a humidity sensor k is embedded in the sandy layer g to detect the humidity of the soil relating to the growth state of the lawn, which is taken into the control device d, thereby controlling the pumping of the water supply by the pumping pump f and the water supply valve c. I am trying to do it.

[0005] Regarding drainage, the water supply pipe a is also used for drainage, and a drainage valve m is provided by branching upstream of the water supply valve c. In some cases, a suction pump n is provided and the drainage valve m is provided. The valve is opened to drain the water under a natural flow, or the water is forcibly sucked by the suction pump n to promote the drainage.

[0006]

However, in such a conventional apparatus, the water supply pipe a is pressure-fed by a pressure pump f.
Pressurized water sent into the soil in a pressurized state from the, it is easy to flow into the layer of low resistance and good water permeability in the soil, while it is difficult to flow into the large layer of poor resistance to poor water permeability,
Water supply is uneven. In addition, since water is not renewed in such a large layer of resistance where it is difficult to supply new water, old anaerobic water continues to stay in the rhizosphere of the lawn almost immobile. The retention of anaerobic water in the rhizosphere could cause lawn growth failure and disease outbreaks.

[0007] Further, most of the nutrients in the soil are carried by the fine particles of the soil, but pressurized water pushes away the fine particles and causes them to flow away, making it difficult to maintain the nutrients necessary for growing the lawn. Had become. As described above, pressurizing the water supply and sending it to the lawn surface has many inconveniences for the lawn.

Further, regarding drainage, conventionally, the lawn surface b
In consideration of uniform water supply, the water supply pipe a, which is buried horizontally, is also used for drainage, so drainage by natural flow tends to cause old anaerobic water to stay in the soil and prevent ventilation. There was a problem that the environment of the lawn rhizosphere could not be maintained well. In addition, forcible drainage is also performed by the suction pump n, but in such drainage, it is possible to drain from a layer having good water permeability, but it is difficult to drain from a layer having poor water permeability,
In addition, there is a risk that not only surplus water but also water infiltrated into the soil by capillary action may be drawn in, so that unevenness of drainage on the lawn and soil nutrient This will cause problems such as runoff.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to supply water in a natural state without unevenness, to drain naturally naturally, and to secure good ventilation. An object of the present invention is to provide a lawn management method and a management device which can maintain and manage the atmosphere environment of a rhizosphere of a lawn according to the state of the lawn.

[0010]

According to the present invention, there is provided a lawn management method according to the present invention, wherein a soil tank is formed in a soil under a grass surface via a water-impervious layer, and a water storage tank is formed in the soil tank. With
A water supply / drainage system that extends from the water storage tank at the bottom of the earth tank and diffuses water supply into the earth tank and collects gravitational water flowing down in the earth tank by the action of gravity is embedded. Adjust the water supply and drainage to the earth tank at the water level, and
Wastewater from the system is supplied to the above-
Return to the primary tank where water is stored, and
Is sent to a filter that purifies the dirt,
Water is stored in the secondary tank, and the water in the secondary tank is transferred to the water tank.
It is intended to be returned (claim 1).

According to such a lawn management method, water is supplied to the lawn by diffusing water into an earth tank below the lawn through a water supply / drain pipe. And this water supply is performed using the communication pipe action (siphon action) under the action of the difference in head pressure between the earth tank and the water tank and gravity.

That is, since water moves between the earth tank and the water tank so that the head pressures of the two tanks become equal, for example,
When the head pressure of the earth tank is lower than that of the water tank, the water supply is gradually and naturally performed at a low water pressure as low as the pressure difference. Therefore, by controlling the water level of the water storage tank, it is possible to adjust the water level in the earth tank to a desired water level. Further, the water supplied to the earth tank and at a considerable water level is further infiltrated into the soil due to the capillary action in the soil, and the water supply action at this stage is naturally performed.

On the other hand, the drainage of the earth tank is adjusted by adjusting the water level in the water storage tank to utilize the fact that surplus water flows down naturally as gravity water by the action of gravity. Perform by collecting. In this way, since water supply and drainage to the earth tank is performed by one water supply and drainage system, there is no need to separately provide water supply pipes and drainage pipes, and facilities for forcibly supplying and draining water are not required, so that the construction of the lawn is extremely low. Easy. In addition, wastewater from the water supply and drainage system is
To the primary tank where rainwater is stored
Return the water in the primary tank to a filter that purifies the dirt
And the purified water is stored in the secondary tank,
Return the water to the reservoir and use the drainage to
To give the rank.

Further, in the lawn management method, it is preferable that the water level of the water storage tank is arbitrarily adjusted within a range from a saturated water level to a state in which the water in the water storage tank is washed away and the water supply / drainage system becomes substantially anhydrous. Claim 2).

By draining the water stored in the water storage tank and making the water supply / drainage system almost anhydrous, water in the earth tank can be almost completely drained. At this time, it is possible to naturally ventilate the soil tank via the water supply / drainage system. In addition, by adjusting the water supply and drainage in the range from the maximum water level to the minimum water level (empty) of the water storage tank, the inside of the earthen tank can be made wet or completely drained, and the water supply state and drainage state of this earthen tank can be cycled. By doing so, it is possible to perform management suitable for the state of the lawn.

Further, in the lawn management method, the water supply into the earthen tub is adjusted by adjusting the water level of the water storage tank according to data relating to the growth state of the lawn such as soil temperature and soil humidity and weather conditions. (Claim 3).

If the water supply and drainage to the soil tank is adjusted in this way by adjusting the water level of the water storage tank in accordance with data relating to the growth state of the lawn such as soil temperature, soil humidity and weather conditions, The atmosphere environment of the rhizosphere can be well maintained according to the lawn condition. As the data on the weather condition, atmospheric temperature, atmospheric humidity, insolation, rainfall, seasonal climate data and the like can be adopted.

In the lawn management method, it is preferable that the quality of water supplied to the earth tank is adjusted in accordance with data relating to water quality such as dissolved oxygen, PH, and electrical conductivity of water in the earth tank. (Claim 4).

As described above, by adjusting the water quality of the water supplied into the earth tank in accordance with the data relating to the water quality in the earth tank, the atmosphere environment of the rhizosphere of the lawn can be well maintained and managed from the viewpoint of the water quality of the water supply. Can be.

On the other hand, a lawn management device according to the present invention includes a soil tank formed in a soil under a grass surface with a water barrier layer interposed therebetween, a water storage tank attached to the soil tank, and a water storage tank. A water supply / drainage system that extends and is buried in the bottom of the earthen tub, diffuses water supply into the earthen tub, and collects gravitational water flowing down in the earthen tub by the action of gravity; and a communication pipe to the water storage tank. Connected and rainwater
And the drainage from the plumbing system is returned
The primary tank and the dirt of water sent from the primary tank.
A filter for purifying water and storing water purified by the filter.
And a secondary tank for returning to the water storage tank (claim 5).

According to the lawn management device of the present invention having such a configuration, similarly to the operation in the above-described management method, the water is released from the water tank by the communication pipe operation (siphon operation) under the action of gravity through the water supply and drainage system. Due to the difference in water head pressure, water can be naturally supplied to the earth tank, and gravity water in the earth tank can be recovered via the water supply and drainage system, eliminating the need to provide separate facilities for water supply and drainage. Thus, the apparatus can be simplified. It is also connected to the reservoir with a communication pipe.
Rainwater is collected and drainage from the water supply and drainage system is returned.
Primary tanks and water contamination from the primary tanks
Filter for purifying water and storing water purified by the filter.
And a secondary tank that returns to the water tank.
The water level is also provided by using wastewater.

[0022] In the lawn management device, it is preferable that the water supply / drainage system has an upward gradient set outward from the water storage tank.

In such a lawn management device, by embedding the water supply / drainage system at a desired upward slope in accordance with the local situation, the forced discharge pressure exerting a bad influence on the underground environment is exerted via the water supply / drainage system. Without gravity, gravity water can be naturally recovered with high drainage efficiency using gravity.

Further, in the above-mentioned lawn management device, it is preferable that the water tank is provided with a water level sensor for detecting a water level of the water tank, and the water level of the water tank is adjusted by control means based on a detection signal of the water level sensor ( Claim 7).

If the water level sensor is provided in the water storage tank and the water level of the water storage tank is adjusted by the control means according to the detection signal of the water level sensor, the water supply control can be automated and the lawn management can be automatically controlled. can do.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a lawn management method and a management apparatus according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a lawn management apparatus according to the present embodiment, and FIG. 2 is a cross-sectional view schematically showing FIG.

The device for managing the lawn 1 according to the present embodiment is installed in, for example, an athletic stadium, and as shown in FIGS. An earth tank 7 partitioned by a water sheet 15, a side groove 2 serving as a water storage tank provided adjacent to the earth tank 7, and a water supply / drainage system extending from the side groove 2 and buried in the bottom of the earth tank 7. And a water supply / drain pipe 4 as the main part.

As shown in FIG. 3, the earthen tub 7 is formed by excavating a site where an athletic stadium is to be formed, and laying a water-impervious sheet 15 on the bottom surface thereof.
Is formed by filling floor soil 10 and the like in multiple layers as the soil. In this embodiment, the soil on which the lawn 1 is laid has a two-layer structure in the order of the floor soil 10 and the second layer 12 in the downward direction.

In the present embodiment, the floor soil 10 is formed by filling a natural fiber mat with sand. According to this, the solidification of the floor soil can be prevented, the shearing resistance is enhanced, and the occurrence of depots can be suppressed. In addition, the aeration work on one lawn and the work of replacing the lawn are reduced during the construction. It can provide a good soil environment for turf roots.

On the other hand, the second layer 12 is a mixture of volcanic gravel, sand and a soil improving material. The second layer 12
In general, it is preferred that the soil composition is formed by laminating medium sand and coarse sand sequentially from the top to the bottom. In this case, the impermeable sheet 15 is laid so as to cover the groove 14 filled with the single crushed stone as described later, and has a function of preventing the fine particles from flowing out of the earth tank 7 and ensuring drainage. I do.

In the present embodiment, a plurality of substantially U-shaped grooves 14 are formed below the second layer 12 so as to correspond to the water supply / drainage pipes 4. And in this groove part 14,
The water supply / drain pipe 4 is arranged at a predetermined drain gradient and is buried with single crushed stone. In addition, a drainage groove is formed at the bottom of the soil layer 7 by the water-impervious sheet 15 laid under the groove portion 14, so that drainage can be performed with high efficiency.

The water supply / drain pipe 4 extends outward from the side groove 2 and is piped to the bottom of the earth tank 7 to diffuse water into the earth tank 7 and to disperse the water in the earth tank 7 by the action of gravity. Is collected as so-called gravitational water flowing down. As shown in FIG. 3, the water supply / drain pipe 4 is formed with a large number of holes 4a along its longitudinal direction, through which water is diffused or collected.

The water supply / drain pipe 4 is provided in the following manner. That is, this plumbing pipe 4 is
As shown in (a) or (b), a plurality of juts are arranged side by side at predetermined intervals so as to be parallel to the juts 2 provided on one side of the lawn 1 so as to be parallel to the juts 2. , One set is buried on the left and right sides of one lawn, and drainage is performed in a half area of one lawn.

In particular, the water supply / drain pipe 4 is shown in FIG.
As shown in the figure, the groove 14 in which the water supply / drainage pipe 4 is disposed is also provided with an upward gradient α toward the outside of the side groove 2, that is, the inside of the earth tank 7. The water supply / drainage pipe 4 is disposed at almost the same gradient corresponding to α. In this manner, the water supply / drainage pipe 4 is buried sequentially outward of the gutter 2 at an ascending gradient α, so that gravity can be naturally applied without using a forced discharge pressure that adversely affects the underground environment. It can be drained with high drainage efficiency.

On the other hand, in the present embodiment, the gutter 2 is installed on a foundation formed of mortar, concrete, or the like formed on the outer periphery of the earthen tub 7.
It is constructed by connecting a series of letter-shaped blocks. Then, as shown in FIG. 1, the water storage in the side groove 2 is performed by supplying water from a water supply facility described later.

In this embodiment, a communication pipe 40 is connected to the side groove 2 as shown in FIG. The communication pipe 40 is connected to a primary tank 61, and an opening / closing valve 41 controlled by the control device 5 is provided in the middle of the communication pipe 40, whereby the water level in the side groove 2 is adjusted and the communication pipe 40 is connected to the primary tank 61. It is configured so that the amount of drainage can be adjusted.

More specifically, in the present embodiment, as shown in FIG.
The water level is given by using the waste water. That is, the wastewater is once returned to the water supply facility, and the wastewater is returned from the water supply facility to the gutter 2.

In this embodiment, an overflow pipe 21 is installed at the upper end of the gutter 2 as shown in FIG. Is discharged from the side groove 2 as necessary. In the present embodiment, the gutter 2 is exemplified as the water storage tank. However, the present invention is not limited to this. For example, a communication pipe or a manhole may be used as long as water can be stored while maintaining the water level. The form is not asked.

In the lawn management apparatus and method according to the present embodiment having the above configuration, as shown schematically in FIG. 2, water is supplied from the water in the gutter 2 under the lawn 1 surface. This is performed by diffusing into the earth tank 7 via the water supply / drain pipe 4 (arrow r in the figure). That is, the water in the side groove 2 is caused by the communication pipe action (siphon action) under the action of gravity.
The water is supplied to the earth tank 7 at that head pressure.

At this time, the water r naturally moves into the earth tank 7 so that the water level L7 is substantially the same as the water level L2 of the side groove 2. Therefore, the water level L2 of the side groove 2 is controlled. By doing so, water can be supplied such that the water level L7 of the earth tank 7 becomes a desired water level.

Then, the water supply s supplied to the earth tank 7 and at the considerable water level L7 is further infiltrated into the soil by the capillary action in the soil, and the water supply action at this stage is naturally performed. . On the other hand, as for the drainage, as shown by an arrow r in the figure, utilizing the fact that excess water flows down naturally by the action of gravity as gravity water, the gravity water r is collected and drained by the water supply / drain pipe 4. It has become.

That is, since the water supply / drainage r of the lawn 1 is caused by a natural water supply / drainage operation of a low water pressure utilizing the action of the communication pipe or gravity, unlike the case of the forced water supply, the infiltration of the water supply into the soil occurs. It is extremely natural and can supply water satisfactorily regardless of the water permeability of the layers in the soil, and the generation of surplus water at the time of drainage and its flow down action are also natural, and unevenness of supply and drainage r may occur. Therefore, the water supply s to the rhizosphere of the lawn can be satisfactorily maintained and managed, and the runoff of soil nutrients due to the supply and drainage can be prevented.

Further, when the water level L2 of the side groove 2 is changed, the water level L7 of the earth tank 7 also changes due to the communicating pipe action. Therefore, the water level L2 of the side groove 2 is adjusted so that the water level L7 of the earth tank 7 is lowered. As a result (indicated by LC in the figure), the pulp effect works and air can be drawn into the earthen tub 7 from the ground surface such as one lawn, and an adjustable ventilation action can be obtained. Natural and good ventilation can be ensured without relying on forced supply and discharge to the rhizosphere of the lawn.

Next, a facility for managing and operating the lawn management device according to the present embodiment will be described. FIG.
As shown in (1), this management device is provided with a water supply facility such as a primary tank 61 and a secondary tank 63 for performing water supply and drainage, and a control device 5 for controlling these.

In the present embodiment, the water supply to the gutter 2 is configured to circulate and use the rainwater stored as described above and the return water from the communication pipe 40. Specifically, as shown in FIG. 1, rainwater is directly stored in the primary tank 61, and the drainage from the communication pipe 40 is returned to the primary tank 61.

The primary tank 61 is provided with an overflow pipe 62, which overflows when the primary tank 61 is full. Therefore, this overflow pipe 6
The water in the primary tank 61 is successively diluted by the overflow from the second tank 2, and the reforming is automatically adjusted to a water quality in which troubles hardly occur. As described above, since the water is supplied by using the rainwater collected in the primary tank 61 and recycling the wastewater, a tremendous water saving effect is exhibited.

The water in the primary tank 61 is sent to a filter 64 by a pump 69 for purifying the dirt, and the purified water is stored in the secondary tank 63. A heating system 68 for heating water in the secondary tank 63 is connected to the secondary tank 63.

The heating system 68 includes a heat source 68a,
It mainly comprises a pump 68b for sending out a heat medium such as water heated by the heat source 68a. And the heat source 68
The heat medium is supplied to the secondary tank 63 from a by the pump 68b so that the water in the secondary tank 63 immediately before the water supply can be appropriately heated.

As described above, by heating the water supply, the water temperature can be adjusted, and the growth state of the lawn can be controlled. In this way, if necessary, if the heating system 68 is controlled in accordance with the detection data of the temperature sensor 51 in the soil, water is supplied to the lawn at a relatively high temperature in winter, and In summer, relatively low-temperature water can be supplied, and the lawn can be supplied with water corresponding to changes in the outside air temperature.

As the heat source 68a, natural heat or surplus heat can be used. For example, industrial waste heat, geothermal heat, hot spring heat, solar heat, fossil fuel, garbage incineration heat, and the like are preferably discarded. It is preferable to use unrecovered heat energy.

On the other hand, the water in the secondary tank 63 is sent to a chemical compounding mechanism 65 to which a chemical such as an insect repellent, an improving agent, and a liquid fertilizer is added. Thereafter, the water is supplied via a flow control mechanism 66 such as a flow control valve. It is sent to the gutter 2. In the present embodiment, three pipes are connected between the secondary tank 63 and the medicine preparation mechanism 65. Each of the two pipes has a pump 70
Is provided, and the other one pipe simply connects the secondary tank 63 and the medicine preparation mechanism 65. A pump is not necessary when water can be supplied to the subsequent system with the water head pressure in the secondary tank 63. On the other hand, two pumps 70 are provided in two pipes to smoothly supply water in other cases. ing.

In the present embodiment, the primary tank 61, the secondary tank 63, and the like are controlled by the control device 5, and according to the data relating to the growing state of the lawn, the side grooves 2 are formed.
The water level of the water supplied to the water, that is, the water level in the side groove 2 is adjusted.

The control device 5 includes a medicine preparation mechanism 65,
Flow control mechanism 66, pumps 69 and 70, heating system 6
8 are connected, and these are controlled appropriately by the control device 5. The water level sensor 2a provided in the side groove 2 to detect the water level, and the humidity and temperature as soil environmental factors are connected. A humidity sensor 50 and a temperature sensor 51 to be detected are connected. Both sensors 50 and 51 are buried in the soil under one lawn so that data relating to the growth state of the lawn can be obtained.

At this time, if necessary, water quality detection means 7 such as a DO (dissolved oxygen) sensor for water quality management, a PH (acid / alkali) sensor, and an EC (electric conductivity) sensor.
1, the water quality detecting means 71 may detect the quality of the supplied water, input the detected data to the control device 5, and control the medicine mixing mechanism 65 by the control device 5. Further, the control device 5 detects and accumulates weather data such as atmospheric temperature, atmospheric humidity, solar radiation, rainfall, and seasonal climate data as weather condition data, and stores short-term and long-term weather conditions. May be analyzed so that this can be taken into control. The control device 5
Is a so-called computer, which controls each unit based on detection data sent from the water level sensor 2a, the humidity sensor 50, the temperature sensor 51, and the water quality detecting means 71 and the like. By providing the water level sensor 2a in the gutter 2 and controlling the water level of the gutter 2 by the control means 5 according to the detection signal of the water level sensor 2a, the water supply control can be automated and the lawn management can be automatically controlled. can do.

According to the equipment for managing and operating the lawn management device described above, the water supply to the earth tank 7 is controlled by each equipment, and the water quantity is controlled by the lawn such as soil temperature and soil humidity and weather conditions. The water level of the gutter 2 is adjusted according to the data relating to the growth state of the water, and the water quality is adjusted according to the data relating to the water quality detected by the water quality detecting means 71 such as a DO sensor, a PH sensor, and an EC sensor. By doing so, it is possible to satisfactorily maintain and manage the atmosphere environment of the rhizosphere of the lawn according to the state of the lawn.

The number of the primary tanks 61 may be one or more. In the case of one piece, the pipe connecting this to the secondary tank 63 is simple and simple, while the primary tank 61 is large in size. Therefore, the installation space is not large in one place and the yield of rainwater or the like is improved, but the piping is complicated. As an example of the piping in the latter case, water may be supplied from the plurality of primary tanks 61 arranged in a distributed manner to any one of the primary tanks 61 using the siphon effect. further,
The apparatus may be combined with a ground watering system for lawn leaf cleaning or emergency use.

Further, in the above-described embodiment, the case where the control is performed only by the control device 5 has been described. However, the control may be arbitrarily switched to perform the manual water supply control.

[0058]

As described in detail above, according to the lawn management method and the management apparatus of the present invention, the supply and drainage of water to the earthen basin can be naturally performed by using the communication pipe function and the action of gravity. Because it is performed at low water pressure, unlike forced water supply and drainage,
The infiltration of the water supply into the earth tank is extremely natural, and water can be supplied well regardless of the water permeability of the layers in the soil. In addition, the generation of surplus water during drainage and its flow down action are natural,
There is almost no unevenness of water supply and drainage, so water supply to the rhizosphere of the lawn can be maintained and managed satisfactorily.
Runoff of soil nutrients due to drainage can also be prevented.
Moreover, since such water supply and drainage is performed through a water supply and drainage system having both functions of water supply and drainage, there is no need to forcibly supply and drain water or separately bury water supply and drainage pipes in the soil. The construction of the device is extremely easy. Sa
In addition, drainage from the water supply and drainage system is connected to the water storage tank by a communication pipe.
Return to the primary tank where rainwater is collected
Water is sent to a filter that purifies the dirt,
The water stored in the secondary tank is stored in the secondary tank
So that the water level can be given
it can.

Further, according to the lawn management method and the management apparatus of the present invention, when the water level of the water storage tank is adjusted so as to lower the water level of the earth tank, the figgo effect works naturally, and the soil is removed from the ground surface such as a lawn surface. Air can be drawn into the tank, and natural and good air permeability can be secured without relying on forced supply and discharge.

In the lawn management method of the present invention, if the water supply and drainage is adjusted within the range from the maximum water level to the minimum water level (empty) of the water storage tank, the inside of the earth tank can be made wet or completely drained. By managing the water supply state and the drainage state of the earthen tank in a cycle, management suitable for the lawn state can be performed.

At the same time, if the water supply and drainage in the soil tank is adjusted by adjusting the water level of the water storage tank in accordance with data relating to the growth state of the lawn such as soil temperature, soil humidity and weather conditions, The atmosphere environment of the rhizosphere can be well maintained according to the lawn condition.

If the quality of the water supplied to the earth tank is adjusted according to the data relating to the water quality in the earth tank, the atmospheric environment of the rhizosphere of the lawn can be well maintained from the viewpoint of the water quality of the water supply. be able to.

On the other hand, in the lawn management device of the present invention,
If an upward gradient is set in the water supply / drainage system toward the outside of the water storage tank, without using a forced discharge pressure that adversely affects the underground environment, gravity is naturally applied via the water supply / drainage system. It can be drained with high drainage efficiency.

Further, if a water level sensor is provided in the water storage tank and the water level of the water storage tank is adjusted by the control means in accordance with the detection signal of the water level sensor, the water supply control can be automated and the lawn management can be automatically controlled. be able to.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a lawn management method and a management device according to the present invention.

FIG. 2 is a sectional view schematically showing FIG.

FIG. 3 is a side sectional view showing a configuration of a soil structure in an embodiment of a lawn management method and a management device according to the present invention.

FIG. 4 is an explanatory diagram showing a piping layout in the embodiment of the lawn management method and the management device according to the present invention;
(A) is a schematic plan view, and (b) is a sectional view taken along the line AA of (a).

FIG. 5 is a configuration diagram showing a conventional example of a lawn management device.

FIG. 6 is a cross-sectional view illustrating a soil structure of a lawn portion in FIG.

[Description of Signs] 1 Lawn 2 Gutter (water tank) 4 Water supply / drainage pipe (water supply / drainage system) 5 Control means (control device) 7 Earth tank 15 Waterproof sheet (waterproof layer) 71 Water quality detection means

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Tetsumi Takahashi 1-24-1 Minami-Aoyama, Minato-ku, Tokyo Obayashi Road Co., Ltd. (56) References JP-A-53-11729 (JP, A) JP-A Sho 51-67654 (JP, A) JP-A-4-58836 (JP, A) JP-A-4-108865 (JP, U) JP-A-4-103453 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01G 25/06

Claims (7)

(57) [Claims] An earth tank is formed in a soil under a grass surface with a water barrier layer interposed therebetween, and a water tank is provided on the earth tank, and is extended from the water tank to a bottom of the earth tank, A water supply / drainage system for diffusing water supply in the earth tank and collecting gravity water flowing down in the earth tank by the action of gravity is buried, and adjusting the water supply and drainage to the earth tank at the water level of the water tank, Drainage from plumbing system
The water is connected to the above-mentioned water storage tank by a communication pipe.
Return to the primary tank, where the water in the primary tank
To a filter for purification, and the purified water is
And storing the water in the secondary tank back to the water storage tank . 2. The water level of the water storage tank according to claim 1, wherein the water level of the water storage tank is arbitrarily adjusted from a saturated water level to a level in which the water in the water storage tank is washed away and the water supply / drainage system becomes substantially anhydrous. Lawn management methods. 3. The method according to claim 1, wherein the water supply to the earth tank is adjusted by adjusting the water level of the water tank according to data relating to the growth state of the lawn such as soil temperature, soil humidity and weather conditions. The lawn management method according to claim 1 or 2, wherein the lawn management method is performed. 4. The water quality of water supplied to the earth tank is adjusted according to data relating to water quality, such as dissolved oxygen, PH, and electric conductivity of the water in the earth tank. 3. The lawn management method according to any one of 3. 5. A soil tank formed in the soil under the grass surface with a water barrier layer interposed therebetween, a water storage tank attached to the soil tank, and a bottom portion of the soil tank extended from the water storage tank. A water supply / drainage system that is buried in the water tank and diffuses water supply into the earth tank and collects gravity water flowing down in the earth tank by the action of gravity.
It is connected by a pipe to collect rainwater,
The primary tank to which the drainage from the system is returned and the primary tank
Filter for purifying water dirt sent from the filter, and the filter
Secondary water that stores the water purified in
Management device lawns, characterized in that a tank. 6. The lawn management device according to claim 5, wherein the water supply / drainage system has an upward gradient set outward from the water storage tank. 7. The water tank according to claim 5, wherein a water level sensor for detecting the water level is provided in the water tank, and the water level of the water tank is adjusted by control means in accordance with a detection signal of the water level sensor. Lawn management device as described.