JPH03183421A - Circulating water-spraying installation on green of golf course or the like - Google Patents

Abstract

PURPOSE:To circulatingly utilize water and prevent the pollution of underground water with agricultural chemicals, etc., by forming an underground water-storing region comprising a conglomerate layer and a water-impermeable sheet, etc., in the underground under a green in a golf course, communicating the conglomerate layer with a water tank and disposing a piping for spraying the water. CONSTITUTION:An underground water-storing region 6 comprising a conglomerate layer, and a water-impermeable sheet, etc., is formed underground under a green in a golf course, etc. An upper water-collecting pipe 7 and a lower water-collecting pipe 8 each communicating with a water tank 10 disposed outside the underground water-storing region 6 are vertically laid in the conglomerate layer 4 and valves 12 are disposed in the water-collecting pipes, respectively. A water-spraying pipe is further disposed from the water tank to circulatingly spray the water on a green, etc., in a golf course.

Description

[Detailed description of the invention]

[F¥-1 usage amount! ['F] According to the present invention 1, e-medicine III is used on golf course greens, etc.
! This invention relates to a circulating water sprinkling facility that reuses sprayed water in order to prevent groundwater contamination caused by JL 3 and to save water. 2. Description of the Related Art Japanese Patent Application Laid-Open No. 62-210930 discloses a method for managing lawn vegetation on golf course greens by using soil water circulation. This method was proposed for the purpose of making effective use of water, since large amounts of water are sprinkled on golf course greens for lawn vegetation management. A permeable or impermeable layer was laid, and perforated pipes were placed to collect percolated water, and the upper drainage layer and soil layer were used as a vegetation base with good permeability, and water was collected from the perforated pipes. Soil water is stored in a tank, and the water is sprinkled using sprinklers.

[Problem to be solved by the invention]

However, this method has the following problems. ■ Just by laying an impermeable sheet or layer between the underground base layer and the drainage layer above it, the area around the drainage layer is not impermeable, so water can be collected using perforated pipes. Surplus water that cannot be drained will seep into the surrounding ground through the drainage layer. For this reason, it is not very effective in preventing groundwater/717 staining due to pesticides, fertilizers, etc. ■ The permeated water that permeates into the drainage layer is immediately collected through perforated pipes and stored in a tank, which tends to dry out the greens, making it necessary to increase the frequency of watering. ■ Appropriate water supply management cannot be carried out according to the moisture level under the green. ■ If there is a lot of rainfall, the tank will become full and the wastewater will need to be treated. An object of the present invention is to provide a water sprinkling facility that solves these problems.

[Means to solve the problem]

The circulating water sprinkling facility of the present invention forms an underground water storage area in the underground ground of a golf course green etc. by a gravel layer and an impermeable sheet surrounding the underside and surrounding area. An upper water collection pipe and a lower water collection pipe connected to the water storage tank are buried above and below, each of these water collection pipes is provided with a valve, and water is supplied from the water storage tank.

[Function] Assuming a golf course green, the valve of the upper water collection pipe is open during the normal period when the lawn needs water.
Keep the valve of the lower water collection pipe closed. In this case, water is stored in the gravel layer of the underground water storage area below the height of the upper water collection pipe, and seepage water (agricultural chemicals,
(including fertilizer, etc.) is collected into a water storage tank through the upper water collection pipe. When the greens dry out, water is naturally supplied from the gravel layer. If there is not enough water (or pesticides or fertilizers), water can be sprinkled onto the greenery using water from the water storage tank through the sprinkling pipes. When the lawn does not need much water, keep the valves of both the upper and lower water collection pipes open. In this case, water is not stored in the gravel layer, but is mainly collected in the water storage tank by the lower water collection pipe. In the event of rain, close the valves on both the upper and lower water collection pipes.
P! ! Rainwater can be prevented from penetrating the greenery by sprinkling water in the water storage tank onto the greenery until the sand layer above the layer is saturated.

【Example】

Next, embodiments of the present invention will be described based on the accompanying drawings. Beneath the golf course green 1, there are formed in order from the top: a sand layer 2, a filtration layer 3 made of nets, non-woven fabric, etc., and gravel N4 made of crushed stones, cobblestones, baked stones, etc., and these are buried around the sand layer 2 and under the gravel layer 4. The area is surrounded by an impermeable sheet 5, forming an underground water storage area 6 as a whole. The gravel layer 4 has an upper water collection pipe 7.
and a lower water collection pipe 8 are buried vertically at a predetermined interval. A large number of water collection holes 9 are bored in the gravel layer buried portions of these water collection pipes 7.8. On the other hand, a water storage tank IO is buried underground at a location outside the green 1 and the underground water storage area 6, and the tips of the upper and lower water collection vibrators 7 extend into this water storage tank 10. The upper and lower water collection pipes 7.8 are each provided with a valve 11.12 in the water storage tank 10. Water storage tank 10
A water spray pump 13 is installed inside. This pump 13 is connected to a sprinkler 15 above ground through a water sprinkling pipe 14 buried underground. The facility according to the present invention configured as described above is used in the following manner. During the normal period when the lawn of green 1 needs water, the valve 11 of the upper water collection pipe 7 is open, the valve 12 of the lower water collection pipe 8 is closed, and the pump 13 is driven to fill the water storage tank IO. Water is sprinkled on the green 1 from the sprinkler 15 at any time. The sprayed water contains pesticides, fertilizers, etc. and permeates into the sand layer 2, passes through the iIt layer 3, and is stored in the gravel layer 4. In this case, the valve 12 of the lower water collection pipe 8 is closed and the valve 11 of the upper water collection pipe 7 is open, so water is stored in the gravel layer 4 at a level below the height of the upper water collection pipe 7, and the water level is The above permeated water (including pesticides, fertilizers, etc.) is collected into the water storage tank IO through the upper water collection pipe 7. If the upper water collection pipe 7 is installed near the overlayer 3, the water that has passed through the sand layer 2 will be immediately transferred to the water storage tank 10.
Water can be collected in Therefore, water can be repeatedly recycled and used, and at the same time, pesticides, fertilizers, etc. can be recycled without leaking outside the underground water storage area 6. Furthermore, when water is not sprinkled, water from the gravel N4 is naturally supplied through the sand layer 2 when the green 1 dries. When the lawn does not need much water, both the upper and lower water collection pipes 7.8 and 11. , 12 are opened. In this case, water is not stored in the gravel layer 4, but is collected directly into the water storage tank IO mainly through the lower water collection pipe 8. In case of rain, both upper and lower water collection pipes 7 and 8 close valve 11.
．． 12 is closed, and the water in the water storage tank 1σ is sprinkled onto the green l until the sand layer 2 is saturated. By doing so, it is possible to prevent rainwater from entering the sand layer 2 and the gravel layer 4, and it is also possible to prevent rainwater from overflowing from the underground water storage area 8, and at the same time, from leaking pesticides, fertilizers, etc. Furthermore, it is possible to prevent the water storage tank 10 from filling up with rainwater. in this case,
The water storage tank 10 may have a capacity sufficient to collect rainwater impregnated into the sand layer 2. The sand layer 2 may be impregnated with rainwater to some extent and then watered to saturate the sand layer 2. This is not necessary if there is little rainfall. In the above, the underground water storage area 6 is formed by the impermeable sheet 5, but it may be formed by other impermeable means, and water may be sprinkled manually without using the pump 13. An electromagnetic valve may be used to open and close it by remote control. Furthermore, the present invention can be applied to places other than golf course greens.

【Effect of the invention】

According to the present invention, there are the following effects. ■ Not only can water be used in the W4 cycle, but it can also prevent groundwater pollution from pesticides, fertilizers, etc. ■ Appropriate water management can be carried out depending on the situation when the lawn etc. needs water, when it does not need much water, and when there is a lot of rainfall. ■ Moisture can be naturally supplied from the stored gravel layer as the ground surface dries up. ■ Even when rainfall is heavy, it is possible to prevent pesticides, fertilizers, etc. from leaking from underground water storage areas, and it is also possible to prohibit the collection of rainwater into water storage tanks.

[Brief explanation of drawings]

The drawing is a sectional view of one embodiment of the present invention. ■... Golf course green, 4... Gravel layer, 5... Impermeable sheet, 6... Underground water storage area, 7... Upper water collection pipe, 8...
・Lower water collection pipe, 10... Water storage tank, Il
, 12...Valve, 14...Water piping.

Claims (1)

[Claims] 1. An underground water storage area is formed in the underground ground of a golf course green, etc. by a gravel layer and an impermeable sheet surrounding the bottom and surrounding area, and the gravel layer is connected to a water storage tank outside the underground water storage area. A circulating water sprinkling facility for golf course greens, etc., characterized in that an upper water collection pipe and a lower water collection pipe are buried vertically, each of these water collection pipes is provided with a valve, and water is piped from the water storage tank.