JPH08289678A - Control of lawn and controlling device - Google Patents

Abstract

PURPOSE: To provide a method for controlling a lawn capable of maintaining and controlling the surrounding circumstance around lawn rhizospheres depending upon a condition of the lawn by uniformly supplying water in a natural way, naturally and well draining the lawn and keeping a good air flow. CONSTITUTION: This controlling device for a lawn is prepared by arranging a gutter 2 in the neighborhood of a lawn surface 1, adjusting a water level in the gutter 2 corresponding with data relating to growth states of the lawn, laying a water supplying pipe 3 which spread feed water in a soil under the lawn surface 1 in the soil and connecting the pipe 3 with the gutter 2, arranging a drain pipe 4 which withdraws gravitational water in the soil under and perpendicularly to the water supply pipe 3 and setting a drain gradient depending upon a spot condition. As the feed water, rain water and recycled drain water can be used by circulation. The feed water sent to the gutter 2 is supplied to the water feed pipe 3 depending upon the water level and the feed water is spread into the soil and drained quite naturally.

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 the growth of lawns, and more particularly to a management method and a management device for lawns laid in athletic stadiums and the like.

[0002]

2. Description of the Related Art Lawn laid facilities include athletic stadiums and golf courses for sports such as baseball, soccer and rugby. Recently, artificial turf is often laid because it is easy to maintain and manage at such facilities, but natural lawn is still superior in view of the need for competition, safety, and feel during use. ing.

This natural lawn is easily damaged and it is difficult to control water supply and drainage for growing. For this reason,
For example, a management device as shown in FIG. 7 has been proposed. In this case, the sprinkler pipe a provided with a large number of water supply diffusion holes is attached to the grass surface b.
By appropriately branching into the soil below and burying it horizontally, a water supply valve c is provided upstream of these water spray pipes a, and the water supply valve c is opened / closed by a control device d, so that a pressure pump from the water tank e At f, water is pumped to supply water. As shown in FIG. 8, the lawn surface b is formed on the soil of the sandy layer g, and the crushed stone layer h is further provided below the crushed stone layer h.
The water sprinkling pipe a is buried, and an impermeable sheet j is laid under the crushed stone layer h for water shielding. Then, the humidity sensor k is embedded in the sandy layer g to detect the humidity of the soil relating to the growth condition of the lawn, and the humidity is taken into the control device d, whereby the pressure feeding pump f and the water feeding valve c control the pressure feeding of water. I am trying to do it.

Regarding the drainage, the sprinkler pipe a is also used for drainage, and a drainage valve m is provided by branching upstream of the water supply valve c, and in some cases, a suction pump n is provided and the drainage valve m is provided. The valve is opened to drain the water naturally, or the suction pump n is forcibly sucked to accelerate the drainage.

[0005]

However, in such a conventional one, the sprinkler pipe a is pumped by the pressure pump f.
Pressurized water, which is sent into the soil in a pressurized state from, easily flows into the well-permeable layer with little resistance in the soil, while it is difficult to flow into the large-resistance layer with poor water permeability.
The water supply is uneven. In addition, in such a high resistance layer where it is difficult to supply a new water supply, since the water is not renewed, old anaerobic water continues to stay in the rhizosphere of the lawn with almost no movement. The retention of such anaerobic water in the rhizosphere leads to impaired lawn growth and disease occurrence.

On the other hand, most of the nutrients in the soil are carried by the fine grains of the soil, but the pressurized water causes the fine grains to flow away and flow away, so that the nutrients necessary for lawn growth are retained. Becomes difficult. As described above, pressurizing the water supply and sending it to the lawn surface has many problems that are inconvenient for the lawn.

Further, as for drainage, conventionally, the water sprinkling pipe a for horizontal water supply is also used for drainage in consideration of uniform water supply to the lawn surface b. There is a problem that old anaerobic water tends to stay in the soil and the ventilation is poor, so that the environment of the rhizosphere of the lawn cannot be maintained well. In addition, forcible drainage is also performed with the suction pump n, but with such drainage, it is possible to drain from a layer with good water permeability, but it is difficult to drain from a layer with poor water permeability, and only excess water is available. Not only that, there is a risk that even the water that has infiltrated into the soil due to capillary action may be drawn in.Therefore, as with the pumping of the water supply described above, there are adverse effects on the lawn due to uneven drainage and runoff of soil nutrients. There will be problems.

The present invention has been made in view of the above circumstances, and an object thereof is to supply water evenly in a natural state, to perform drainage naturally and favorably, and also to secure good ventilation. An object of the present invention is to provide a lawn management method and a management apparatus capable of maintaining and maintaining the atmospheric environment of the rhizosphere of the lawn according to the state of the lawn.

[0009]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the lawn management method of the present invention is to form a submerged tank in the soil below the lawn through an impermeable layer, and to form the submerged tank in the soil tank. Is embedded with a water supply system for diffusing the water supply therein, and below the water supply system, the gravity water that extends outward from the soil tank and flows down by gravity in the soil tank is used. The drainage system to be collected is buried, and further, the water supply system is connected to a water supply storage tank for supplying water, and the water level of the water supply storage tank is used to adjust the water supply to the soil tank. To do.

The water level of the water supply tank is arbitrarily adjusted within a range in which the water in the water supply tank is drained from the saturated water level and the water supply system is in a substantially anhydrous state.

The water supply to the soil tank is controlled by adjusting the water level of the water storage tank according to data relating to the growth condition of the lawn such as soil temperature and soil humidity and weather conditions. .

Further, the lawn management apparatus of the present invention comprises an underground tank which is partitioned and formed in the soil below the lawn surface through an impermeable layer, and a water supply which is buried in the underground tank and diffuses the water supply therein. System, a drainage system that is buried below the water supply system so as to extend outward from the soil tank and that collects gravity water that flows down in the soil tank by the action of gravity, and is connected to the water supply system. And a water supply tank for supplying water into the soil tank by the action of a communicating pipe.

The water supply system is embedded in one direction, and the drainage system is embedded in a direction orthogonal to the embedding direction of the water supply system.

The drainage system is characterized in that a downward slope is set toward the outside of the soil tank.

The water supply tank is provided with a water level sensor for detecting the water level thereof, and the water level of the water supply tank is adjusted by the control means by the detection signal of the water level sensor.

[0016]

The operation of the lawn management method of the present invention will be described. Regarding water supply, an underground tank and a water storage tank, which are partitioned and formed in the soil below the lawn surface through an impermeable layer, are connected by a water supply system. ,
Due to the action of gravity under the effect of a connecting pipe (siphon action), water is supplied from the water storage tank to the underground tank by the head pressure. With this configuration, the water will naturally move to the soil tank so that the water level is almost the same as the water level of the water storage tank. Therefore, by controlling the water level of the water storage tank, Water can be supplied so that the water level in the tank becomes a desired water level. In other words, these soil tanks and water storage tanks connected by a water supply system are controlled so that the water head pressures of both are controlled, and if the water head pressure of the soil tank is lower than that of the water storage tanks, Water will be gradually and naturally supplied at a low water pressure such as a differential pressure. Then, the water supply action at this time is obtained by the head pressure caused by the action of the communicating pipe under the action of natural gravity. Then, the water supplied into the soil tank and having a considerable water level further infiltrates into the soil due to the capillary phenomenon in the soil, and the water supply action at this stage is naturally performed.

On the other hand, with regard to drainage, the fact that excess water naturally flows down due to the action of gravity is used, and this gravity is used in a drainage system that is buried below the water supply system by extending it from the underground tank to the outside. It is designed to collect water and drain it.

As described above, according to the present invention, since natural water supply and drainage with low water pressure are utilized by utilizing the action of the communicating pipe and the action of gravity, unlike the case of forced water supply and drainage, The infiltration of water supply is extremely natural, and water can be satisfactorily supplied regardless of the water permeability of the soil layer, and the surplus water generated during drainage and its flow-down action are also natural, resulting in uneven water supply and drainage. Since it rarely occurs, it is possible to maintain and manage the water supply to the rhizosphere of the lawn well and prevent runoff of soil nutrients due to water supply and drainage.

Further, when the water level of the water storage tank is raised or lowered, the water level of the soil tank also rises or lowers due to the action of the communicating pipe. Therefore, if the water level of the water storage tank is adjusted so as to lower the water level of this soil tank, the Huigo effect naturally occurs. Works to cause air to be drawn from the ground surface such as the lawn surface to the underground tank, and an adjustable ventilation effect can be obtained. It is possible to secure natural and good air permeability.

Further, the water level control of the water supply tank is controlled so that the water supply of the water supply tank disappears from the saturated water level and the water supply system becomes almost anhydrous, so that the water supply tank can be emptied. Furthermore, by removing most of the water in the soil tank from the drainage system, it is possible to use the water supply system and the drainage system to naturally ventilate the soil tank. In addition, in this way, from the maximum water level of the water supply storage tank to the minimum water level (empty)
By adjusting the water supply within the range, it is possible to fill the soil tank with water or completely drain it.By controlling the water supply state and drainage state of this soil tank in a cycle, it is suitable for the condition of the lawn. Can manage.

Further, the water supply to the soil tank is adjusted by adjusting the water level of the water supply tank according to the data relating to the growth condition of the lawn such as soil temperature, soil humidity and weather conditions. The rhizosphere's atmospheric environment can be properly maintained and managed according to the condition of the lawn. As the weather condition data, atmospheric temperature, atmospheric humidity, solar radiation amount, rainfall amount, seasonal climate data and the like can be adopted.

The operation of the lawn management apparatus of the present invention is the same as the operation in the above management method. In particular, the water supply system is buried in one direction, and the drainage system is also buried in a direction orthogonal to the embedding direction of the water supply system. Therefore, the embedding direction of these systems is one direction, and construction work is simple. Instead, these arrangements can be equalized with respect to the flow of water in the soil tank, and water can be supplied and drained evenly over the entire lawn surface.

Since the drainage system is provided separately from the water supply system, the water supply system generally buried horizontally is
It is possible to bury the drainage system with a desired downward slope according to the local situation. And since this drainage system was buried in a downward slope toward the outside of the soil tank, gravity was used to naturally increase drainage efficiency without exerting a forced discharge pressure that adversely affects the soil environment. It can be drained at.

Further, since the water level sensor is provided in the water supply tank, and the control means adjusts the water level of the water supply tank by the detection signal of the water level sensor, the water supply control can be automated and the automatic control of lawn management can be achieved. be able to.

[0025]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 3 to 6 are diagrams showing a schematic configuration of the present invention.

As shown in FIG. 3, an underground tank 7 is sectioned and formed in the soil under the lawn surface 1 with a water-impervious layer 15 interposed therebetween. A water supply pipe 3 as a water supply system that is drawn from the outside and diffuses the water supply s into the soil tank 7 is embedded in the soil tank 7, and below the water supply pipe 3, the soil tank 7 is provided. The drainage pipe 4 is buried as a drainage system that extends outwardly from the inside of the soil tank 7 and collects excess gravity water r flowing down in the soil tank 7 by the action of gravity. The drainage pipe 4 is collected in the collecting pipe 40 outside the soil tank 7. Further, the water supply pipe 3 is connected to the tank 2 exemplified as a water supply storage tank for supplying water into the soil tank 7 by a communication pipe action. The tank 2 is supplied with water from a water supply facility (not shown) to give a water level. Further, not only the water supply facility but also the drainage may be returned to the tank 2 through the collecting pipe 40, and the drainage may also be used to give the water level. On the other hand, the drainage may be returned to the water supply facility, and the drainage may be returned from the water supply facility to the tank 2. When the waste water is returned from the collecting pipe 40 to the tank 2, the overflow pipe 21 is installed at the upper end of the tank 2 so that the increase in water caused by rain on the lawn surface 1 is returned through the collecting pipe 40. It is configured so that it can be discharged from the tank 2 when

The tank 2 is installed around the lawn surface 1, for example, adjacent to the lawn surface 1. A large number of holes are formed in the water supply pipe 3 and the drainage pipe 4 along the longitudinal direction thereof and over the entire circumference, and the water supply s is diffused through this hole or the gravity water r is recovered. It is like this. Further, although the tank 2 is illustrated as an example of the water supply storage tank in the illustrated example, the form thereof is not limited as long as the water can be stored while maintaining the water level.

On the other hand, FIGS. 4 to 6 show layouts of the pipes in the above structure. Tank 2 is grass 1
The water supply pipes 3 are installed on one side of the grass surface 1 and are horizontally arranged in one direction in the lateral direction of the grass surface 1. On the other hand, the drain pipe 4 has a direction orthogonal to the burying direction of the water supply pipe 3,
Specifically, they are arranged side by side in one direction toward the longitudinal direction of the lawn surface 1. In the illustrated example, the drainage pipe 4 is the grass surface 1
One group is buried in each of the left and right sides of the turf, and drainage is performed in each half of the lawn surface 1. And especially these drain pipes 4 are arrange | positioned with the downward gradient (alpha) as it goes to the soil tank 7 outside. The impermeable layer 15 is also arranged in parallel with the drain pipe 4 in parallel with the slope α of the drain pipe 4 with almost the same gradient.

In the lawn management device and the management method of this embodiment having such a schematic structure, the water supply s is formed in the soil below the lawn surface 1 through the water-impervious layer 15 to form the soil. Since the tank 7 and the tank 2 are connected by the water supply pipe 3, water is supplied from the tank 2 to the underground tank 7 by the head pressure thereof due to the communication pipe effect (siphon effect) under the action of gravity.
At this time, the water naturally moves to the soil tank 7 so that the water level L7 becomes almost the same as the water level L2 of the tank 2. Therefore, by managing the water level L2 of the tank 2, Water can be supplied so that the water level L7 of the middle tank 7 becomes a desired water level. In other words, the soil tank 7 and the tank 2 connected by the water supply pipe 3 are controlled so that the water head pressures of them are balanced, and if the water head pressure of the soil tank 7 is lower than that of the tank 2. However, the water will be gradually and naturally supplied at a low water pressure such as the differential pressure. Then, the water supply action at this time is obtained by the head pressure caused by the action of the communicating pipe under the action of natural gravity. Then, the water supply s supplied into the soil tank 7 and having a considerable water level L7 is further infiltrated into the soil due to the capillary phenomenon in the soil, and the water supply action at this stage is naturally performed.

On the other hand, regarding drainage (gravitational water r), the fact that excess water naturally flows down by the action of gravity is used,
This gravity water r is collected and drained by a drainage pipe 4 which is buried below the water supply pipe 3 so as to extend from the underground tank 7 to the outside.

As described above, in this embodiment, since the natural water supply s and drainage r of low water pressure utilizing the action of the communicating pipe and the action of gravity are used, the soil is different from the case of the forced water supply / drainage. The infiltration of the water supply s into the interior is extremely natural, and water can be satisfactorily supplied regardless of the water permeability of the layer in the soil, and the surplus water generated during the drainage r and its flow-down action are also natural. -There is almost no unevenness in drainage, so it is possible to maintain and manage the water supply s to the rhizosphere of the lawn well, and to prevent runoff of soil nutrients due to water supply and drainage s and r.

Further, when the water level L2 of the tank 2 is changed, the water level L7 of the soil tank 7 is also changed by the action of the communicating pipe. Therefore, the water level L2 of the tank 2 is changed so as to lower the water level L7 of the soil tank 7. When adjusted (indicated by LC in the figure), the Huigo effect works to cause air to be drawn from the ground surface such as the lawn surface 1 into the soil tank 7, and an adjustable ventilation effect can be obtained. As a result, it is possible to ensure natural and good air permeability for the rhizosphere of the lawn, which does not depend on forced feeding / exhausting action.

Further, by controlling the water level adjustment of the tank 2 so that the water storage of the tank 2 is lost from the saturated water level and the water supply pipe 3 is in an almost dry state, the tank 2 is controlled. The water supply pipe 3 and the drain pipe 4 by emptying the water, or by almost removing the water in the soil tank 7 from the drain pipe 4.
It is also possible to use these to naturally ventilate the soil tank 7 from these. Further, by adjusting the water supply s in the range from the maximum water level to the minimum water level (empty) of the tank 2 as described above, the soil tank 7 can be filled with water or completely drained. By managing the condition and the drainage condition in cycles, it is possible to perform management suitable for the condition of the lawn.

Furthermore, the adjustment of the water supply s into the underground tank 7
By adjusting the water level L2 of the tank 2 according to the data related to the growth condition of the lawn such as soil temperature, soil humidity and weather conditions, the atmosphere environment of the rhizosphere of the lawn is maintained well according to the state of the lawn. Can be managed. As the weather condition data, atmospheric temperature, atmospheric humidity, solar radiation amount, rainfall amount, seasonal climate data and the like can be adopted.

On the other hand, regarding the layout of the pipes 3 and 4,
Since the water supply pipe 3 is embedded in one direction and the drain pipe 4 is embedded in a direction orthogonal to the embedding direction of the water supply pipe 3, the embedding direction of these pipes 3 and 4 is one direction and the construction work is easy. In addition, the arrangement of these can be equalized with respect to the flow of the water s, r in the soil tank 7, and the water supply s and the drainage r can be evenly performed over the entire lawn surface 1.

Further, since the drainage pipe 4 is provided separately from the water supply pipe 3, the drainage pipe 4 is buried at a desired downward slope in accordance with the local situation with respect to the water supply pipe 3 which is generally buried horizontally. can do. Since the drainage pipe 4 is buried in the soil tank 7 with a downward gradient α, the gravity of the drainage pipe 4 is naturally reduced by using gravity without exerting a forced discharge pressure that adversely affects the soil environment. It can be drained with high drainage efficiency.

Next, a specific embodiment will be described with reference to FIGS. The basic configuration is the same as that of the schematic configuration described above. FIG. 1 shows a lawn management device,
It is installed in an athletic stadium, and FIG. 2 is a sectional view for explaining the soil structure of the lawn portion in FIG.

In this lawn management device, a groove 2 is provided as a water supply tank near the lawn surface 1, and the water supply level to the groove 2, that is, the water level in the groove 2 is determined according to the data relating to the growth condition of the lawn. Is adjusted. Then, the water supply pipe 3 connected to the groove 2 is used to diffuse the water supply into the soil in the soil tank 7 by utilizing the lower communication pipe action of the action of gravity.
The water supply that has infiltrated the soil is further permeated by capillarity. On the other hand, the drainage pipe 4 is buried below the water supply pipe 3 in a direction orthogonal to the water supply pipe 3, is used independently for the water supply pipe 3 and is exclusively used for drainage, and is configured to promote drainage.

The water supply is made by circulating the stored rainwater and the return water from the drainage pipe 4. That is, the rainwater is directly stored in the primary tank 61, and the drainage from the drain pipe 4 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 water from 2, and is automatically reformed and adjusted to a water quality that is less likely to cause a trouble.

The water in the primary tank 61 is sent to the filter 64 by the pump 69 to purify the dirt, and the purified water is stored in the secondary tank 63. A heating system 68 for heating the water in the secondary tank 63 is connected to the secondary tank 63. The heating system 68 is mainly composed of a heat source 68a and a pump 68b which sends out a heating medium such as water heated by the heat source 68a. Then, a heat medium is supplied from the heat source 68a to the secondary tank 63 by the pump 68b so that the water in the secondary tank 63 immediately before water supply can be appropriately warmed. By warming the water supply in this way, the water temperature can be adjusted and the growth of the lawn can be controlled. As the heat source 68a, it is possible to use natural energy or surplus heat. For example, industrial waste heat, geothermal heat, hot spring heat, solar heat, fossil fuel, waste incineration heat, etc. are preferably discarded or not recovered. It is preferable to utilize the heat energy of

The water in the secondary tank 63 is used as the medicine mixing mechanism 65.
The chemicals such as insect repellent, improving agent, liquid fertilizer, etc. are added to the groove 2 and then sent to the groove 2 via a flow rate control mechanism 66 such as a flow rate adjusting valve. In this embodiment, the secondary tank 63 and the medicine mixing mechanism 65 are connected by three pipes. A pump 70 is provided for each of the two pipes, and the remaining one pipe is for the secondary tank 63.
And the drug mixing mechanism 65 are simply connected. If water head pressure in the secondary tank 63 can supply water to the subsequent system, no pump is required, but in order to perform water supply smoothly in other cases, two pumps 70 are installed in two pipes. ing.

The control device 5 is connected to a medicine mixing mechanism 65, a flow rate control mechanism 66, pumps 69 and 70, and a heating system 68, and these are controlled appropriately by the control device 5. The controller 5 is connected to a water level sensor 2a provided in the groove 2 for detecting the water level thereof, a humidity sensor 50 and a temperature sensor 51 for detecting humidity and temperature as soil environmental factors. Both sensors 50,
The reference numeral 51 is buried in the soil below the lawn surface 1 so that data relating to the growth condition of the lawn can be obtained.
If necessary, the oxygen sensor may be embedded and connected to the control device 5. Furthermore, the control device 5 detects and accumulates meteorological data such as atmospheric temperature, atmospheric humidity, insolation, rainfall, and climate data for each season as the meteorological condition data, and accumulates them for short-term and long-term climate conditions. May be analyzed, and this may be incorporated in the control.

The water supply pipe 3 is provided with a large number of holes for diffusing the water supply into the soil. A plurality of the water supply pipes 3 are connected in parallel to the groove 2 in one direction, and a pair of grooves 2 are also arranged with the grass surface 1 interposed therebetween so that water can be uniformly supplied to the entire grass surface 1. There is.

The drain pipe 4 is provided with a large number of holes for collecting gravity water flowing down in the soil by the action of gravity, and a plurality of these drain pipes 4 are provided below the water supply pipe 3. The drainage pipes 4 are buried in parallel in one direction so as to be orthogonal to the water supply pipe 3, and these drainage pipes 4 are collected in a collecting pipe 40, and the collecting pipe 40 is connected to a primary tank 61. Further, an opening / closing valve 41 controlled by the control device 5 is provided in the middle of the collecting pipe 40,
Thereby, the amount of drainage from the soil tank 7 can be adjusted.

As shown in FIG. 2, the soil on which the lawn is laid has a three-layer structure in which the soil layer 10, the second layer 12, and the third layer 13 are arranged in this order. The floor soil 10 is made by filling a natural fiber mat with sand. The second layer 12 is a mixture of volcanic gravel, sand and soil improving material, and the water supply pipe 3 is horizontally embedded in the second layer 12. The third layer 13 is made of single-grain crushed stone. However, generally speaking, the soil may have a form in which middle sand, coarse sand, a water permeable sheet, and gravel are sequentially laminated from the upper side to the lower side. The water permeable sheet is
It is provided for the purpose of preventing fine particles in the soil from running away and ensuring drainage of the gravel layer. A plurality of substantially U-shaped groove portions 14 are formed in parallel below the third layer 13 so as to correspond to the drain pipes 4,
The drainage pipe 4 is arranged in the groove portion 14 at a predetermined drainage gradient, and the drainage pipe 4 is filled with single-grain crushed stone. An impermeable sheet 15 is laid under the third layer 13 and the groove portion 14 as a water-impervious layer, whereby the soil tank 7 is sectioned and formed, and a groove for drainage is formed in the groove portion 14, Drainage can be done efficiently.

When the soil composition of the surrounding area is outlined, the lower part of the groove 2 adjacent to the lawn surface 1 is sequentially from the top to the bottom.
It has a structure in which mortar 20, concrete 21, and crushed stone 22 are laminated.

The control device 5 is a so-called computer and controls each part based on the detection data sent from the water level sensor 2a, the humidity sensor 50, the temperature sensor 51 and the like.

Particularly in this embodiment, the water level sensor 2a
While the water level in the groove 2 detected in Step 2 is monitored, water is supplied from the secondary tank 63 to the groove 2 by the control device 5, while the water supply from the groove 2 into the soil is performed by the water supply pipe 3 connected to the groove 2. It is carried out by utilizing the communication tube action, the capillary phenomenon, etc. Diffusion of the water supply from the water supply pipe 3 into the soil is performed according to the water level in the groove 2. At this time, since the action of gravity is used, the water supply can be diffused extremely naturally into the soil. You can Since the water level in the groove 2 can be suitably adjusted according to the data relating to the growth condition of the lawn such as soil temperature and soil humidity, water can be naturally supplied to the root of the lawn.

On the other hand, for drainage, a dedicated drainage pipe 4 is buried below the water supply pipe 3, and a gradient for drainage is provided.
It can be optimally set according to the local situation and can be drained by natural downflow. As a result, the ventilation in the soil can be kept good, and oxygen can be preferably supplied to the root of the lawn, so that the atmospheric environment of the rhizosphere of the lawn can be maintained and managed in a good state.

Further, since the water level sensor 2a is provided in the groove 2 and the water level of the groove 2 is adjusted by the control means 5 by 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 be achieved.

The number of primary tanks 61 installed may be one or plural. In the case of one piece, the piping connecting this and the secondary tank 63 is single and convenient, while there is a point that the primary tank 61 becomes large. On the other hand, in the case of a large number, it can be distributed and arranged. Installation space is not taken up in one place,
In addition, the yield of rainwater and the like is improved, but the piping becomes complicated. As an example of piping in the latter case, water may be supplied from a plurality of distributed primary tanks 61 to any one of the primary tanks 61 by utilizing the siphon effect.

In addition, a ground sprinkling system may be combined with this apparatus for cleaning the foliage of lawn or for emergencies.

In the above embodiment, the controller 5
Although the case of the control by only the above has been described, it may be configured to perform the water supply control manually by arbitrarily switching.

In this embodiment, the primary tank 6
Water is supplied by using the rainwater collected in 1 and recycling of drainage, so it exerts a great water saving effect.

Further, if necessary, the temperature sensor 5 in the soil
If the heating system 68 is controlled according to the detection data of No. 1, the lawn is supplied with water having a relatively high temperature in the winter and the water is supplied with a relatively low temperature in the summer. The lawn can be supplied with water in response to changes in outside temperature.

Further, in the present embodiment, since the natural fiber mat is filled with sand as the structure of the bed soil, the bed soil can be prevented from being solidified, and the shear resistance is enhanced to suppress the occurrence of depot. be able to. This leads to a reduction in aeration work on the lawn surface 1 and rework work on the lawn, and a good soil environment for the grass roots can be provided.

[0057]

As described in detail above, according to the lawn management method and management apparatus of the present invention, since the natural water supply and drainage of low water pressure are utilized by utilizing the action of the communicating pipe and the action of gravity, Unlike the case of forced water supply / drainage, the infiltration of water supply into the soil is extremely natural, and water can be satisfactorily supplied regardless of the water permeability of the layer in the soil, and excess water is generated during drainage. The flow-down action is also natural, and there is almost no unevenness in water supply / drainage. Therefore, water supply to the rhizosphere of the lawn can be maintained and managed well, and runoff of soil nutrients accompanying water supply / drainage, etc. Can be prevented.

If the water level in the water tank is adjusted so as to lower the water level in the soil tank, the Huigo effect naturally works and air can be drawn from the ground surface such as the lawn surface to the soil tank. , It is possible to secure natural and good air permeability regardless of forced supply / exhaust action.

Further, the water level control of the water supply storage tank is controlled so that the water supply system of the water supply storage tank disappears from the saturated water level and the water supply system becomes almost anhydrous, so that the water supply system and the drainage system are controlled. It is also possible to use these to naturally ventilate the soil tank. Further, the soil tank can be filled with water or completely drained. By controlling the water supply state and the drainage state of this soil tank in a cycle, it is possible to perform management suitable for the state of the lawn.

Further, the water supply to the soil tank is adjusted by adjusting the water level of the water storage tank according to the data relating to the growth condition of the lawn such as soil temperature, soil humidity and weather conditions. The rhizosphere's atmospheric environment can be properly maintained and managed according to the condition of the lawn.

Further, since the water supply system is buried in one direction and the drainage system is buried in a direction orthogonal to the embedding direction of the water supply system, the embedding direction of these systems is one direction and the construction work is easy. Not only there, but these arrangements can be made uniform with respect to the flow of water in the soil tank, and water can be supplied and drained evenly over the entire lawn surface.

Since the drainage system is provided separately from the water supply system, it is possible to embed the drainage system at a desired downward slope in accordance with the local situation with respect to the water supply system which is generally buried horizontally. Since this drainage system was buried in a downward slope toward the outside of the soil tank, gravity was used to naturally drain water without exerting a forced discharge pressure that adversely affects the soil environment. It can be drained efficiently.

Further, since the water level sensor is provided in the water supply tank and the control means adjusts the water level of the water supply tank by 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 drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating the soil structure of FIG.

FIG. 3 is a side sectional view showing a schematic configuration of the present invention.

FIG. 4 is a schematic plan view showing a piping layout of the present invention.

5 is a cross-sectional view taken along the line AA of FIG.

6 is a sectional view taken along the line BB of FIG.

FIG. 7 is a configuration diagram showing a conventional example of a lawn management device.

FIG. 8 is a cross-sectional view illustrating the soil structure of the lawn portion of FIG.

[Explanation of symbols]

 1 Lawn surface 2 Groove 3 Water supply pipe 4 Drain pipe 5 Control means (control device)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masazumi Oku 1-24-1 Minamiaoyama, Minato-ku, Tokyo Obayashi Sports Co., Ltd.

Claims (7)

[Claims] 1. A submerged tank is sectioned and formed in the soil below the lawn surface through an impermeable layer, and a water supply system for diffusing the water supply is embedded in the subterranean tank, and below the water supply system. Is embedded with a drainage system that extends outward from the soil tank and collects gravity water flowing down by gravity in the soil tank, and further supplies water to the water supply system. Connect a water supply tank for
A method of managing lawn, characterized in that the water supply to the soil tank is adjusted by the water level of the water supply storage tank. 2. The water level of the water supply storage tank is arbitrarily adjusted within a range in which the stored water of the water supply storage tank is drained from a saturated water level and the water supply system is in a substantially anhydrous state.
Lawn management method described in. 3. The water supply to the soil tank is adjusted by adjusting the water level of the water storage tank according to data relating to the growth condition of the lawn such as soil temperature and soil humidity and weather conditions. The lawn management method according to claim 1 or 2. 4. A submerged tank partitioned and formed in the soil below the lawn surface with an impermeable layer, a water supply system embedded in the subterranean tank and diffusing the water supply therein, and a water supply system below the water supply system. It is connected to the drainage system and the water supply system, which is buried by extending outward from the soil tank and collects gravity water flowing down in the soil tank by the action of gravity, and is connected to the water supply system in the soil by the action of a communicating pipe. A lawn management device comprising: a water supply tank for supplying water to the tank. 5. The management of lawn according to claim 4, wherein the water supply system is buried in one direction, and the drainage system is buried in a direction orthogonal to an embedding direction of the water supply system. apparatus. 6. The lawn management device according to claim 4, wherein the drainage system is provided with a downward slope as it goes to the outside of the soil tank. 7. The water supply tank is provided with a water level sensor for detecting the water level, and the control means adjusts the water level of the water supply tank by a detection signal of the water level sensor. The lawn management device described in that section.