JP2002339310A - Bunker structure in golf course - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bunker structure in a golf course capable of being easily applied even to the existing bunker and preventing the bunker sand from flowing down even in a heavy rain fall. SOLUTION: The bunker structure includes a culvert drain section 20 placed around the terminal end section 5 of a predetermined slope 3 of a soil bedrock 2 and a bunker sand flowing down prevention mat 10 provided between the slope 3 and the bunker sand 6 to enable the bunker sand 6 to hold, the bunker sand flowing down prevention mat 10 is so constituted that the lower end section 11 thereof is connected to the culvert drain section 20, at the same time, it is excellent in permeability in comparison with the bunker sand 6 and that water flowing thereinto is led to the culvert drain section 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a bunker structure for a golf course.

[0002]

2. Description of the Related Art Golf is one of the most popular sports in Japan because it can be enjoyed by men and women of all ages.

[0003] Here, the golf course is provided with bunkers (guard bunkers, cross bunkers, etc.) to make the play more interesting. This bunker 1 is shown in FIG.
As shown in FIG. 9 and FIG. 9, bunker sand 6 is spread over a soil base 2 in a depression provided at a predetermined position on the golf course. As the bunker sand 6, sand having a uniform particle size is used, and the sand is expensive at tens of thousands of yen per cubic meter.

As shown in FIG. 8, a branched main drain pipe 8 is buried in the bottom of the bunker 1, and rainwater smoothly flows out of the bunker through the main drain pipe 8 during rainfall. Is discharged.

[0005]

By the way, in the bunker structure described above, when heavy rain falls, the lawn 7
A large amount of rainwater flows from the side into the bunker 1, which is a depression. This large amount of rainwater permeates the bunker sand 6 on the slope of the bunker 1 and flows down along the soil base 2 in the sand 6. The amount of rainwater contained in the bunker sand 6 may increase, and eventually, the bunker sand 6 may run off as shown in FIG.

When the bunker sand 6 falls,
Part of the soil base 2 (slope 3 etc.) is exposed,
Is soiled by the rain and soils the bunker sand 6.
In this case, it is practically impossible to completely remove the soil from the soiled bunker sand 6, and it is necessary to dispose of the soil to cause great damage.

Further, the bunker 1 in which the bunker sand 6 has run down needs to be repaired promptly. However, a large number of workers must be mobilized for the repair work, and the repair cost increases.

Therefore, it is required to establish a technique capable of preventing bunker sand from flowing down even when heavy rain falls. It is desirable that such a technique be easily applicable to existing bunker. Even if it is possible to prevent the bunker sand from flowing down, technology that requires the use of large-scale civil engineering equipment (shovel-type excavators, large dump trucks for transportation, etc.) during construction is essential. It is difficult to put it to practical use because it will be rough.

An object of the present invention is to provide a bunker structure in a golf course which can be easily applied to existing bunker and can prevent bunker sand from flowing down even when heavy rain falls. .

[0010]

In order to achieve the above object, according to the first aspect of the present invention, there is provided a depression provided at a predetermined position on a golf course, wherein bunker sand is spread over a soil base. In a bunker structure in a golf course, a culvert drainage channel portion disposed near the end of a predetermined inclined surface of the soil base, and can be interposed between the inclined surface and bunker sand to hold the bunker sand. A bunker sand fall prevention mat, the bunker sand fall prevention mat having a lower end connected to the culvert drainage channel, and having a higher permeability than the bunker sand, and It is configured to guide to the drainage channel.

According to this invention, when a large amount of rainwater flows into the bunker during rainfall, most of the rainwater penetrates into the bunker sand on the slope of the bunker, and is absorbed by the bunker sand fall prevention mat to prevent the rain from falling. Run down the inside.

At this time, since the bunker sand falling prevention mat has better water permeability than the bunker sand, rainwater quickly flows down the mat and flows into the culvert drainage section.
Thus, a large amount of rainwater is not included in the bunker sand, and the bunker sand can be prevented from flowing down.

Here, since rainwater flows almost uniformly into the underdrain drainage channel from all the lower end portions of the bunker sand fall prevention mat, a large amount of rainwater does not flow at one time. Good drainage. Therefore, it is not necessary to make the cross-sectional area of the culvert drainage section particularly large, and the construction can be easily performed by a small number of workers without using a large civil engineering construction machine. Further, since the bunker sand fall prevention mat is merely laid so as to cover the predetermined inclined surface of the soil base, it can be easily constructed by a small number of workers without using a large-sized civil engineering construction machine. Therefore, it can be easily applied to existing bunker.

According to a second aspect of the present invention, the bunker sand falling prevention mat is formed by using a pulp of a coconut shell as a raw material so as to have a high friction surface.

In the case of this invention, the weight of the bunker sand fall prevention mat can be reduced, so that the construction is further facilitated. Further, since the surface of the bunker sand falling prevention mat is a high friction surface, it is possible to more reliably prevent the bunker sand coming into contact with the surface from flowing down. In addition, no harmful substances are generated by incineration at the time of disposal, so that no environmental pollution is caused. In addition, it can be reused even if a soil modifying material is used.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the bunker structure in the golf course according to the present invention includes a culvert drainage channel portion 20 provided near the end 5 of the predetermined inclined surface (3) of the soil base 2, and the inclined surface (3). ) And the bunker sand 6 and a bunker sand fall prevention mat 10 capable of holding the bunker sand 6.

Specifically, as shown by broken lines in FIGS. 1 and 3, the culvert drainage channel portion 20 is provided with a terminal portion 5 of a predetermined inclined surface of the soil base 2 (in this embodiment, a mountain-side inclined surface 3). The drainage groove 21 is formed by digging the vicinity to a predetermined depth and a perforated drainage pipe 22 disposed in the drainage groove 21 and connected to the main drainage pipe 8. Perforated drainage pipe 22
As shown in FIG. 4, a predetermined number of holes 23 are formed on the outer peripheral surface thereof.
Are drilled through.

In this embodiment, as the perforated drain pipe 22, a drain hose in which a coil of 34 metal steels per meter is covered with a micromesh filter is used. This drain hose can be bent freely along the drain, and is lightweight and has good workability.

Next, the bunker sand fall prevention mat 10
The lower end 11 is connected to the culvert drainage channel portion 20, and has a configuration that has better water permeability than the bunker sand 6 and guides the inflowing water to the culvert drainage channel portion 20.

As shown in FIGS. 5 and 6, the bunker sand fall prevention mat 10 is formed into a mat shape using a pulp of a coconut shell as a raw material so that the surface 13 has a high friction surface. In this embodiment, a bunker guard mat manufactured by Tanaka Co., Ltd. is used as the bunker sand fall prevention mat 10. This mat is obtained by processing the pulp fibers of a coconut shell into a special nonwoven fabric having many voids, and has a width of 1 meter, a length of 10 meters, and a thickness of 10 mm. When transporting, you can carry it in a rolled state,
This is convenient for transportation and the like. In addition, it is lightweight and excellent in water permeability, water resistance, and corrosion resistance. Further, it can be used for a long period without clogging due to bunker sand or the like.

The bunker sand fall prevention mat 10 is applied to the bunker 1 in the following procedure.

That is, as shown in FIG. 6, the mat 10 is positioned so as to extend from the start end 4 to the end 5 of the predetermined inclined surface 3 of the soil base 2. If the mat 10 is to be installed in a bunker, the bunker sand is removed from the inclined surface of the bunker 1 on which the mat 10 is to be provided.

Next, the upper end 12 of each mat 10 is trimmed at a position 5 to 10 mm lower than the starting end 4 of the predetermined inclined surface 3 of the soil base 2. Also, the lower end 1 of each mat 10
1 is wound around the outer peripheral surface of the perforated drainage pipe 22 of the culvert drainage channel section 20. As a result, the rainwater flowing down the mat 10 flows into the perforated drainage pipe 22 through the hole 23 formed on the outer peripheral surface of the perforated drainage pipe 22. Then, the rainwater absorbing material 25 is spread so that the lower end 11 of each mat covers the portion wound around the perforated drainage pipe 22, and the bunker sand 6 is further spread thereon.

Here, as the rainwater absorbing material 25, bean gravel or short fiber is selected in order to reduce workability and material transportation. In this embodiment,
The newly constructed bunker will use pea gravel, and the existing bunker will use lightweight short fibers to reduce the workability and transportation effort. The short fiber is a single natural fiber that has not been processed with coconut fiber.

Next, in order to fix each of the mats 10, as shown in FIG. 6, 5 to 6 locking pins 29 having a length of 150 mm are driven per square meter. In the connecting portions 28 of the mats 10, short fibers are connected to the connecting portions 28 by 2 to 3 mm so that all the mats 10 are integrated to increase the strength and that bunker sand does not flow out from the connecting portions 28. It is spread thick, and an adhesive (reactive hot melt adhesive) is applied using a hand gun or the like and joined. Here, since the mat 10 has flexibility, it is adapted to the surface shape of the soil base 2 and comes into close contact with the base 2.

After the mat 10 is laid, the bunker sand 6 is spread on the mat 100 by about 100 to 120 mm and the finish is leveled to complete the bunker structure according to the present invention.

In the case of the bunker structure having the above structure, a large amount of rainwater (for example, a rainfall of
When the rainwater flows into the bunker 1, much of the rainwater permeates into the bunker sand 6 on the slope of the bunker 1 and is absorbed into the bunker sand fall prevention mat 10 and flows down the mat 10. I do.

At this time, the bunker sand falling prevention mat 10
Since the water has a lower resistance when flowing in the bunker sand 6, the rainwater quickly flows down the mat 10 and flows into the perforated drainage pipe 22 of the culvert drainage channel 20. The rainwater flowing into the perforated drainage pipe 22 is quickly discharged out of the bunker 1 via the main drainage pipe 8. Thus, the bunker sand 6 does not contain a large amount of rainwater, and the bunker sand 6 can be prevented from flowing down.

Here, since rainwater flows into the perforated drainage pipe 22 substantially uniformly from all the lower end portions 11 of the bunker sand fall prevention mat 10, a large amount of rainwater flows at once. There is nothing and drainage is good. Therefore, there is no need to particularly increase the cross-sectional area of the perforated drainage pipe 22 (and, consequently, the culvert drainage channel portion 20), and the work can be easily performed by a small number of workers without using a large civil engineering construction machine. Also, the bunker sand fall prevention mat 10 is only laid so as to cover the predetermined inclined surface 3 of the soil base 2 as described above, so that a small number of people can work without using a large-sized civil engineering construction machine. It can be easily constructed by staff. Therefore, it can be easily applied to existing bunker.

Further, the bunker sand fall prevention mat 10
Since the pulp of the coconut shell is used as a raw material, the weight can be reduced. Therefore, the construction is further facilitated. Further, since the surface 13 of the bunker sand falling prevention mat 10 is a high friction surface, the bunker sand 6 in contact with the surface 13 can be more reliably prevented from flowing down. In addition, mat 1
Since no harmful substances are generated even if incinerated at the time of disposal of 0, no environmental pollution is caused. In addition, it can be reused even if a soil modifying material is used.

In the above-described embodiment, the bunker sand falling prevention mat 10 is formed by using coconut shell pulp as a raw material. However, the present invention is not limited to this, and is more permeable than bunker sand. Any configuration may be used as long as it is excellent and can guide the inflowing water to the culvert drainage section.

Also, the method of laying the mat 10 and the method of constructing the culvert drainage section 20 can be variously changed.

[0033]

According to the first aspect of the present invention, the culvert drainage channel disposed near the end of the predetermined slope of the soil base, and the bunker interposed between the slope and the bunker sand It is equipped with a sand fall prevention mat, and the bunker sand fall prevention mat penetrates the bunker sand and quickly guides the rainwater that has flowed into the culvert drainage channel, so the construction is simple and easily applicable to existing bunker. Can prevent runoff of bunker sand even in the event of heavy rain

According to the second aspect of the present invention, since the bunker sand falling prevention mat can be reduced in weight, construction can be further facilitated. Further, since the surface of the bunker sand falling prevention mat is a high friction surface, it is possible to more reliably prevent the bunker sand coming into contact with the surface from flowing down. In addition, no harmful substances are generated even if incinerated when disposed of.
It does not cause environmental pollution. In addition, it can be reused even if a soil modifying material is used.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining an embodiment of the present invention.

FIG. 2 is also a view for explaining a culvert drainage section.

FIG. 3 is a view for explaining an arrangement state of a culvert drainage section.

FIG. 4 is a view showing a perforated drainage pipe in a culvert drainage channel.

FIG. 5 is a view showing a bunker sand falling prevention mat.

FIG. 6 is a view for explaining an operation of arranging a bunker sand runoff prevention mat.

FIG. 7 is a diagram for explaining a bunker structure.

FIG. 8 is a view for explaining an arrangement state of a main drain pipe in a conventional bunker structure.

FIG. 9 is also a view for explaining a bunker structure.

FIG. 10 is also a view for explaining a defect.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bunker 2 Soil base 3 Slope 4 Beginning end 5 End 6 Bunker sand 8 Main drain pipe 10 Mat 11 Lower end part 12 Upper end part 13 Surface 20 Underdrain drainage channel 21 Drainage groove 22 Perforated drainage pipe 25 Rainwater absorbing member

Claims (2)

[Claims] 1. A bunker structure in a golf course in which a bunker sand is spread over a soil base, which is provided in a predetermined place on a golf course and is provided near a terminal end of a predetermined inclined surface of the soil base. A culvert drainage channel portion, and a bunker sand fall prevention mat interposed between the inclined surface and the bunker sand and capable of holding the bunker sand; A bunker in a golf course, the lower end of which is connected to a culvert drainage channel, and has a configuration that is more permeable than bunker sand and guides inflowing water to the culvert drainage channel portion. Construction. 2. The bunker structure of a golf course according to claim 1, wherein the bunker sand fall prevention mat is formed from a pulp of a coconut shell as a raw material so that the surface has a high friction surface.