JPH0321126B2 - - Google Patents

Description

[Detailed description of the invention] A. Field of industrial application The present invention relates to the improvement of soil for growing lawns, and particularly for the greens of golf courses, it is possible to achieve both good drainage and good water retention necessary for growing lawns. This invention relates to a method for creating soil for growing lawns that is ideal for a golf course.

B. Conventional technology Regarding the preparation of conventional lawn cultivation soil,
For example, in cultivation land, as described in Japanese Patent Application Laid-Open No. 59-183629, the inner surface of a recess that has been cut in advance is
It has been proposed to cover the area with a water-impermeable or low-water permeable membrane and provide a drain pipe at the bottom of the membrane, and then backfill the area and drain excess water using the drain pipe. On the other hand, there was a technique of laying a pine-like water-permeable material over the entire bottom surface and burying water-permeable rods so that the upper ends were exposed to manage the moisture in the soil.

C. Problems to be Solved by the Invention When the two conventional techniques described above are combined, a tremendous effect is expected on cultivation sites such as fields.
However, when it comes to golf courses, many people walk on the grass every day, unlike in fields, so there are concerns about the strength of the inner surface of the recess, making it impossible to maintain a stable grass surface. Also, if the membrane should be torn, it would take a considerable amount of time and effort to restore it, making it unusable. Furthermore, if the permeable rod is exposed above the topsoil, it will interfere with play, and above all, as the name suggests, it is rod-shaped, so if it is completely buried, the water content in the surface layer will be uneven. It is difficult to maintain a uniform green.
In addition, golf courses have not only flat areas but also many undulating areas, which has the fatal drawback that the effect is diminished.

D. Means for Solving the Problems The present invention is a method for creating a lawn growing soil that improves the conventional lawn growing soil creating technology and provides an optimal soil environment for the topography unique to golf courses. In this method, the ground of the area where grass is planned to be planted is dug, and a cement-based hardening material is mixed into the soil around and at the bottom of the dug and shaped depression, and the bottom is leveled on a horizontal surface with a groove with a downward slope in one direction. At the same time, a drain pipe is laid in the trench, the end of the drain pipe is connected to a water collection device equipped with drainage control means, the recess is backfilled, and a plurality of pages are placed into the backfilled soil. The reason is that the pad drains are buried at equal intervals in an upright position, with the distance between their upper ends and the ground surface being a constant distance.

E. Effect The periphery and bottom of the dug and shaped recess are solidified by the intermixing of cement-based solidifying material and lose water permeability, and the recess becomes capable of storing water and at the same time serves to reinforce the ground. The water that has permeated into the soil is then collected at the bottom of the recess, and some of the water that has collected at the bottom is sucked upward by multiple paper drains buried in a vertical position and returned to the ground. The surface is evenly moistened and excess water is drained through a water collection device equipped with a drain pipe and drainage control means,
In addition, no obstacles are exposed on the surface, and the sturdy ground ensures stable play.

F. Example Next, an example of the method for preparing lawn growing soil according to the present invention will be described based on the drawings.

First, the ground where the grass is to be planted is dug to a depth of approximately 50 cm to form a recess 1, and a pit 2 is placed adjacent to the recess 1 (Figure 1).

Next, cement solidification material (product name:
(Ube UCK, manufactured by Ube Industries, Ltd.) and level the bottom horizontally (Figure 2).

Then, a plurality of grooves 4 for installing drain pipes are formed in the bottom, a drain pipe 5 is installed in the grooves 4, and pebbles are filled thereon, and the end of the drain pipe 5 is installed in the pit 2. It is connected to the water collecting device 6 via a valve body, and waits for the cement-based solidifying material to harden (FIG. 3).

The drain pipe installation groove 4 has a slope inclined toward the water collection device side, and the water collection device 6 has two adjustment valves 7 installed at different heights.
Drainage control means consisting of 7' are provided.

Furthermore, a paper drain 8 (product name: Cattle Board,
Kinjo Rubber Co., Ltd.) in an upright position, that is, arranged evenly at appropriate intervals so that there are water channels in the vertical direction,
For example, the area is backfilled with river sand 9, then filled with additional soil 10 mixed with fertilizer, the surface is restored to its original topography, and grass is planted (Figure 4).

The lawn growing soil created in this way can be easily solidified around the recess and the soil at the bottom, and the water sucked up by the paper drains buried at equal intervals can be absorbed all over the surface. Since it spreads and manages moisture in the soil, water management is perfect.
Selection of soil type for backfilling is simplified.

When the surface layer of the above lawn cultivation soil is irrigated by watering or rainfall, the water seeps into the river sand and collects at the bottom of the depression, and some of the water collected at the bottom is absorbed and reaches the surface layer. The area near the area is moisturized. In addition, if water accumulates to the extent that it overflows from the recess due to heavy rain or flooding, excess water is discharged from the upper adjustment valve and a small amount of water is stored at the bottom. If you manage it in this way, the surface layer will always be properly hydrated, and not only will you not have to worry about your lawn dying.
There is no root rot due to excess water, and no pest or disease damage.

The present invention exhibits the following remarkable effects in the terrain where the ground surface is highly undulating, which is unique to golf courses.

That is, in a sloped area with many ups and downs, as shown in Fig. 5, a plurality of concave portions are formed in succession, and the depth of each concave portion is graded according to the height of the ground surface. By making the distance between the top of the tower and the ground surface the same, the amount of water sucked up is adjusted to a constant level, and the water content in the surface layer is made uniform.

In addition, when the ground surface is sloped or undulating,
The distance between the top of the paper drain and the ground surface tends to decrease as the distance between the top of the paper drain and the ground surface increases, so the distance between the top of the paper drain and the ground surface is intentionally unified. There may be some areas where it is not allowed. In addition, when multiple recesses are formed, water management can be further simplified by allowing excess water to flow from the upper recess to the lower recess in order and draining it from the drain hole attached to the lowest recess. be done.

In addition, in the present invention, the drain pipe to be buried, the paper
The number of paper drains and the spacing between them may be changed as appropriate, and the paper drains can also be buried by a driving means after backfilling the recess. In addition, the depth of the recess and the thickness of the soil mixed with the cement-based solidification material are not limited to the examples, and the structure of the water collection device may vary as long as it is equipped with drainage control means. isn't it.

Effects As described above, according to the present invention, since the bottom surface of the recess is horizontal, even when the amount of water is small, the water does not accumulate in one place, and there is no possibility of a place where water cannot be pumped. Furthermore, the bottom surface has sloped grooves for excellent drainage, and the area near the surface is evenly moistened by the effective placement of paper drains. In addition, the ground strength is high, and even if the surface has undulations, construction can be carried out to accommodate the shape, so there is no need to worry about local water drainage. In terms of water management at golf courses,
It is highly regarded as the best technology, and its practical benefits are enormous.

[Brief explanation of the drawing]

Figures 1 to 4 are explanatory diagrams showing the basic preparation method of lawn growing soil according to the present invention in the order of steps;
The figure is an explanatory diagram showing lawn growing soil created on a slope. 1... recess, 2... pit, 3... soil, 4...
...Groove, 5...Drain pipe, 6...Water collection device, 7,
7'...Adjustment valve, 8...Paper drain,
9...River sand, 10...Lower soil.

Claims (1)

[Claims] 1. Dig the ground in the plot where grass is planned to be planted, mix a cement fixing material into the soil around the dug-out and shaped depression, and spread it evenly on a horizontal surface with a groove with a downward slope in one direction. At the same time, a drain pipe is laid in the trench, the end of the drain pipe is connected to a water collection device equipped with drainage control means, the recess is backfilled, and a plurality of papers are placed into the backfilled soil. - A method for creating soil for growing lawns at a golf course, characterized in that drains are buried at equal intervals in an upright position with the distance between the upper end and the ground surface being uniform.