JP2941719B2 - Road surface erosion prevention rubber plate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing erosion of forest roads and forest roads by rainwater.

[0002]

2. Description of the Related Art The forest road disaster that occurred in 1993 was an unprecedented disaster in the history of forest road disasters in this prefecture, with 501 locations and damages of 2,604 million yen. (Normal annual average: 125
(510 million yen) According to the characteristics of this disaster, the cut slopes are the most frequent, accounting for 37.3% (189), followed by roadside breaks of 28. 3% (142 locations) and embankment collapse locations are 19.4% (97 locations). As for the cause of the road shoulder break, road surface water causes half of the total 53.
It accounted for 3%. In other words, it was found that road surface wastewater treatment did not function properly on the existing forest road.

[0003] As for road surface drainage treatment, crossing work is usually planned, but it is said that sufficient crossing work has been installed on existing forest roads because the main measure was to extend the length of the opening as a measure at the time. It is a difficult situation. At the end of 1993, the length of forest roads in this prefecture reached approximately 26,200 km, of which 861 km was paved and 3 km in total.
That's only one part. The annual extension of the forest road project in this prefecture is about 60 km, but the extension of paving is about 50 km every year, and the non-paving extension tends to increase year by year. Municipalities perform various maintenance and management such as road surface adjustment of existing forest roads. Has become. Under the circumstances described above, it is necessary to quickly develop an appropriate wastewater treatment facility for road surface water on unpaved roads.

[0004]

As a countermeasure against the above-mentioned problems, the effect can be expected if the pavement project is implemented promptly. However, it is extremely inferred from the current state of the pavement project budget of the country. It is a difficult situation. Therefore, as an immediate measure, it is considered that more appropriate arranging of crossing works will exert the same effect as paving work. At present, crossing works are usually installed in reinforced concrete U-shaped gutters, and thinning materials may be used in some work paths and work paths. However, installing a new crossing on these existing forest roads is complicated with the current construction work, so at least the following conditions must be satisfied in order to easily perform these series of operations.

[0005] (Easy installation of crossing work.) The usual work method for crossing reinforced concrete U-shaped gutters is to use heavy equipment for excavation and transportation, and ordinary people (ordinary workers) carry out the work. Extremely difficult to do. Even the smallest U-shaped groove has a weight of more than 20 kg per piece and a length of 60
Installing a crossing work of about 5 to 6 m in combination with a U-shaped groove of cm requires considerable skill. In addition, even if thinned wood is used, it is necessary to prepare several pieces of wood having an appropriate diameter and length, and it is difficult to say that it can be used anytime and anywhere.

[0006] Reinforced concrete is semi-permanent and has no problem in durability. However, thinned timber is subject to durability problems such as decay.

(Easy maintenance of crossing works.)
It is necessary to devise a U-groove type and crossing work using thinned wood so that gravel on the road surface does not fall into the groove. Also, when the crossing is buried with gravel on the road surface, it is necessary to quickly remove the gravel and restore its function.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a surface running water guide surface formed by an upper edge of a rubber plate and a projecting surface having a running water rising surface facing the lower edge of the guide surface. A ridge is formed on the front, a ridge corresponding to the ridge is formed on the back of the ridge, an underground buried plate is erected on the lower edge of the ridge, and surface running water is guided along the surface running water guide surface. A road surface erosion prevention rubber plate which can be buried and installed on a road surface to approximately the middle of the ridge so as to guide the erosion prevention rubber plate according to the first invention, wherein the ridge is an arc-shaped or angled ridge. The road surface erosion preventing rubber plate according to the first or second aspect of the present invention is provided with an anchor flange at the front and rear ends of the lower end.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A surface running water guide surface 2 'is formed in front of a portion of an upright rectangular rubber plate 1 having a thickness of about 8 mm from the upper end (length 500 mm) to 50 mm below, that is, an upstanding upper edge portion 2.

A ridge 4 having a running water rising surface 3 formed by an upwardly inclined surface facing the lower edge of the guide surface 2 'is formed on the front surface, and the running ridge 4 is moved downward along the rising surface 3 so as to raise running water. The underground burial board 6 hanging from the edge is buried on the road surface 7.

On the back side of the ridge 4, a concave ridge 5 corresponding to the ridge 4 is provided.
Are formed, and the cross section of the ridge 4 may be formed in an arc shape (FIG. 1) or a mountain shape (FIG. 11).

The underground buried plate 6 is suspended from the lower edges of the concave ridges 4 and 5, and anchor flanges 8 and 8 are provided on the front and back of the lower end.

Therefore, the water flowing on the road surface 7 during rainfall or heavy rain rises along the flowing water rising surface 3 of the ridge 4 (arc-shaped or mountain-shaped ridge 4 ', 4 ") and hits the surface flowing water guiding surface 2'. The direction of flow is changed in the direction of the guiding surface 2 '.

The rubber plate 1 is buried up to the middle of the concave ridges 4 and 5, and a cobblestone is laid just below the ridges 4 and covered with sand.

The direction of the surface running water guide surface 2 'is oblique to the direction of the surface running water (FIG. 7), or is obliquely set to be orthogonal to the direction of the surface running water (FIG. 5). To prevent the water flowing toward the shoulder 10 (FIG. 7)
0 can be prevented from collapsing.

Further, surface water flowing through the rut 11 of the vehicle can be guided to the outside of the rut 11 as shown in FIG. 9, and it is possible to prevent infiltration of the roadbed from the rut 11 or water content of the forest road.

Further, the water flowing on the road surface 7 of the forest road is guided to the outside of the groove 9 or the road shoulder 10 to prevent the momentum of the water, whereby the collapse of the road surface 7 can be completely prevented.

When the standing upper edge 2 is stepped on with a wheel, the concave ridges 4 and 5 are bent, and the elasticity of the rubber is dispersed on the concave convex surfaces of the concave ridges 4 and 5 so that the standing upper edge 2 is moved. Can be alleviated.

The reference numeral 12 in FIG.
Reference numeral 8 denotes an anchor bar (made of ductile cast iron), 13 denotes an anchor pin, and a denotes a flowing water guiding direction.

[0020]

According to the present invention, as described above, the flowing water on the road surface of the forest road or the work road is buried with the rubber plate, and the flowing water rises on the rising surface of the flowing water and is guided along the flowing water guiding surface. The scouring along the surface and the expansion of the scouring are prevented, and the running water on the road surface is quickly discharged from the road surface to prevent the road surface from collapsing.

In addition, ordinary forest owners can easily utilize road maintenance without special techniques for road surface drainage, and by using this product appropriately on unpaved roads. It is useful for prevention of road erosion and associated maintenance work and prevention of forest road disasters.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a road surface erosion prevention rubber plate of the present invention.

FIG. 2 is a perspective view of a state of use of the rubber plate.

FIG. 3 is a perspective view of a concave ridge portion.

FIG. 4 is a perspective view of a flowing water guiding state.

FIG. 5 is a plan view of a flowing water guiding state.

FIG. 6 is a longitudinal sectional view of a forest road and a slope.

FIG. 7 is a plan view of a curved road portion of a forest road in a flowing water guiding state.

FIG. 8 is a plan view of a state of drainage by a rubber plate according to the amount of flowing water on the road surface.

FIG. 9 is a plan view of a road surface in a state of drainage of running water in a rut.

FIG. 10 is a perspective view showing a state where an anchor bar and an anchor pin are used.

FIG. 11 is a partial perspective view of a rubber plate in which a ridge is a chevron ridge.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rubber plate 2 rising upper edge 2 ′ surface running water guide surface 3 running water rising surface 4 ridge 4 ′ arc-shaped ridge 4 ”chevron ridge 5 concave 6 underground board 7 road surface 8 anchor flange

Claims (3)

(57) [Claims] 1. An upper surface of a rubber plate forms a front running water guide surface on a front surface, a ridge having a running water rising surface facing a lower edge of the guide surface is formed on a front surface, and a ridge is formed on a rear surface of the ridge. Forming a concave strip corresponding to the strip, suspending an underground buried plate at the lower edge of the concave strip,
A road surface erosion prevention rubber plate that can be buried and installed on a road surface to approximately the middle of the ridge so as to guide surface flow water along the surface flow guide surface. 2. The road surface erosion preventing rubber plate according to claim 1, wherein the ridge is an arc-shaped or angled ridge. 3. The road surface erosion prevention rubber plate according to claim 1, wherein an anchor flange is provided on a front surface and a back surface of a lower end of the underground buried plate.