JPH0754344A - Slope protecting structure, slope protecting construction method and slop protecting member also serving for drainage - Google Patents

Abstract

PURPOSE:To prevent the outflow of sediment on the surface of slope and the collapse of the face of slope by providing a porous body on a gutter member forming a ditch on a sheathing board, and disposing this porous body as a protecting member in the state of being communicated with the longitudinal drain passage on the face of slope. CONSTITUTION:A slope protecting member 1 serving for drainage is formed of an approximately rectangular steel plate 2 serving as a sheathing board, angle steel 3 serving as a pile provided at either end part of the steel plate 2, gutter members 6 forming ditches on the steel plate 2, sponge 4 as a porous body, and the like. This member 1 is vertically press-fitted onto the face of slope by a heavy machine and disposed in such a way as to be communicated with a longitudinal drain passage, provided on the filled face of slope, from obliquely above. At this time, the porous body provided on the sheathing board of the member 1 is made face above the face of slope. This porous body prevents the gutter on the sheathing board from being clogged with sediment. The porous body once absorbs surface water such as rainwater 1 flowing down on the face of slope from above, and spring water and seepage water to a slope surface layer part, and then leads the water to the longitudinal drain passage through the gutter on the sheathing board so as to drain the water to a lateral drain passage provided along the toe of slope and a banquette.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope protection structure in earthwork, a slope protection method, and a drainage slope protection member.

[0002]

2. Description of the Related Art Conventional embankment slopes are provided with various protective works for the purpose of protecting the slopes. These protective works include concrete block or steel frame works, or sheet pile type earth retaining works. Engineering is known.

[0003]

However, since the framing work has to be done by manpower of the workers after shaping the embankment slope, most of the work is problematic in terms of construction period and construction cost. . In addition, when subsidence due to compression or the like occurs on the embankment slope, there is a problem that the frame is cracked or damaged, and the repair at that time becomes large-scale. Further, since the sheet pile type earth retaining work is often intended only for earth retaining, there is a problem that surface water such as rainwater, spring water and seepage water are likely to cause sediment outflow and slope failure of the surface layer.

The present invention has been made by paying attention to such conventional problems, and the purpose thereof is to prepare a drainage and slope protection member in advance so that it can be applied to heavy machinery without depending on only human power of workers or the like. It is possible to construct it, and even if the embankment slope is cracked or damaged, it can be partially repaired. Furthermore, surface water such as rainwater, slope protection structure that can drain spring water and seepage water, An object is to provide a slope protection method and a slope protection member that also serves as drainage.

[0005]

The present invention has been made to solve the above problems, and its gist is a slope protection member used for embankment slope protection in earthworks. Drainage consisting of a plate, a pile fixed to a required position of the dam plate, a gutter material that forms a groove in the dam plate, and a water-permeable covering material provided on the gutter material via a porous body. It is a dual-purpose slope protection member.

Another aspect of the present invention is a bank slope protection structure for earthwork, which comprises a lateral drainage passage provided along a slope and a step, and a sloped surface communicating with the horizontal drainage passage. The slope protection structure includes a vertical drainage passage provided on the slope and a sloped drainage passage that is provided on the slope and communicates with the vertical drainage passage as a branch from obliquely above to below.

The slope protection / drainage passage can be formed by using the above-described drainage / slope protection member.

Further, another subject matter of the present invention is a slope protection method after shaping of an embankment slope in earthwork, comprising (1)
A protective member press-fitting step of press-fitting a drainage / drainage slope protection member into the slope, (2) a slope repair step of repairing and shaping the press-fitted slope of the protection member, and (3) the drainage / usage method A vertical drainage passage providing step of providing a vertical drainage passage communicating with the surface protection member on the slope, and (4) a horizontal drainage passage providing a horizontal drainage passage communicating with the vertical drainage passage along the slope or step. There is a slope protection method constructed by a combination of the above steps (1) to (4).

[0009]

In the drainage / slope protection work of the present invention, the drainage / slope protection member is vertically press-fitted to the slope by a heavy machine such as a backhoe, and communicates diagonally from above to the vertical drainage passage provided on the embankment slope. It is arranged as follows. At this time, the porous body provided on the dam plate of the drainage and slope protection member is arranged so as to face above the slope. This porous body prevents the gutter on the dam plate from being clogged with earth and sand, and once absorbs surface water such as rainwater flowing down from the slope, spring water and permeated water to the surface layer of the slope, Through the gutter on the weir board to the vertical drainage passage,
Drain water to the horizontal drainage passages along the slopes and steps. In this way, the surface water, spring water, and seepage water on the slope are drained to prevent sediment outflow and slope collapse on the slope surface.

Further, in the case where settlement occurs due to compression or the like on the embankment slope, in the slope protection structure of the present invention, only the drainage / slope protection member, the horizontal drainage passage or the vertical drainage passage at the damaged portion can be replaced. Correspond.

[0011]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a drainage / slope protection member according to the present invention as defined in claim 1, wherein FIG.
-A sectional drawing, (b) figure is a front view, (c) figure is a top view. The slope protection member 1 that also serves as the drainage work of the present invention has a substantially rectangular steel plate 2 as a weir plate, an angle steel 3 as a pile fixed to both ends of the steel plate at a substantially right angle in the longitudinal direction, and a steel plate 2 on the steel plate 2. A gutter member 6 for forming a groove, a sponge 4 as a porous body provided on the steel plate 2, and a mesh 5 as a water-permeable coating provided on the sponge 4.

Here, as the gutter material 6, use is made by bending two sapwoods of light angle steel and deforming them into acute angles, or
Alternatively, a combination of standard shaped steel, flat steel, lightweight shaped steel, or a synthetic resin plate, etc. in which an acute groove is formed on the steel plate 2 is used. Further, it is desirable that the mesh 6 is a metal net or a net made of synthetic resin, and the angle steel 3 is fixed on the side opposite to the steel plate surface on which the sponge 4, the mesh 5 and the light angle steel 6 are provided. In addition, although the above-mentioned substantially rectangular plate is the steel plate 2, other than this, it can be made of hard wood or a synthetic resin plate, and the pile is made of hard wood other than the angle steel 3,
Round steel, deformed steel bar or other steel materials can be used.

Next, the slope protection structure described in claim 2 will be described with reference to FIG. FIG. 2 is a partial view from the top of the embankment to the small steps to which the slope protection structure of the present invention is applied, in which (a) is a side view and (b) is a BB side view of (a). is there. The slope protection structure 10 of the present invention includes a lateral drainage passage 14 provided along a slope bottom (not shown) and a step 15.
And a vertical drainage passage 11 provided on the slope 13 so as to communicate with the horizontal drainage passage 14, and a slope protection / drainage passage 1 provided on the slope 13 and communicating with the vertical drainage passage 11 obliquely from above.
The main part is composed of a and 1b, and other than this main part,
A vinyl chloride pipe 1 as a water distribution pipe, which is arranged to connect the lower end portion 11a of the vertical drainage passage 11 and the horizontal drainage passage 14 to each other.
There is 6.

Here, the drainage passages 1a and 1b also serving as slope protection.
Uses the drainage and slope protection member 1 described in the embodiment of claim 1, and the slope protection and drainage passage 1a and the slope protection and drainage passage 1b are provided so as to overlap each other by about 10 to 20 cm. . At this time, as shown in FIG. 2 (b), the mesh 5 of the drainage and slope protection member is arranged so as to face above the slope, and the slope protection and drainage passages 1 a and 1 b and the vertical drainage passage 11 are combined. The slope 13 is arranged so as to form a fish bone pattern.

In the vertical drainage passage 11, an operator manually dugs a slope 13 into a U-shaped groove 21 as shown in FIG. 3, and a vinyl sheet 20 is laid in the groove 21. A porous body, for example, a sponge 22 or the like is arranged on the upper surface of the slope 13 to have the same height. The sponge 22 is arranged so as to directly communicate with the slope protection / drainage passage 1a.

Further, the lateral drainage passage 14 is formed by embedding a U-shaped groove in the slope and the step 15.

Next, the flow of water when surface water such as rainwater, spring water to the surface layer of the slope, and permeated water are discharged by the slope protection structure 10 will be described with reference to FIG. Surface water such as rainwater flowing down along the slope 13 is once absorbed by the sponge 4 of the slope protection / drainage passages 1a and 1b as shown by the arrow in FIG. 2 (a). At this time, since the slope protection and drainage passages 1a and 1b are densely arranged in a fish bone shape on the slope 13, the sponge 4 can efficiently absorb surface water. Further, the sponge 4 prevents the gutter 6 on the steel plate 2 from being clogged with earth and sand. The surface water thus absorbed is guided from the sponge 4 to the steel plate 2 and the gutter 6 and flows obliquely downward, is absorbed by the sponge 22 of the vertical drainage passage 11, and is further absorbed by the vinyl sheet 21 of the vertical drainage passage 11. Flows downward along the flow path and flows through the vinyl chloride pipe 16 to the lateral drainage passage 14.

Further, the spring water and the permeated water flowing from the inside of the method to the surface layer of the method, as shown by the arrow in FIG. 2 (b), like the surface water such as rainwater, also serve as the slope protection drainage passage 1a, It is absorbed by the sponge 4 of 1b, and the horizontal drainage passage 14 is taken along the same route.
It is guided up to and drained.

As described above, the drainage passage 1 that also serves as slope protection
In addition to the function as a slope protection member that prevents sediment outflow and slope collapse of the slope surface, a and 1b also function as drainage passages for discharging surface water of the slope 13, spring water, and permeated water. Further, in the slope protection structure 10, the drainage passage 1 that also serves as a slope protection
Since a and 1b, the vertical drainage passage 11 and the horizontal drainage passage 14 are independently arranged, even when the slope 13 is submerged due to compression or the like, the damaged slope is protected during repair. The combined drainage passages 1a and 1b, the vertical drainage passage 11 or the horizontal drainage passage 14 can be easily repaired by replacing them.

Next, the slope protection method described in claim 3 will be described. In the slope protection method of the present invention, in the process of stacking from the bottom embankment to the top embankment, after shaping the embankment slope of each layer, first, with a heavy machine, this slope is also used as a drainage / drainage slope. A protective member press-fitting step of press-fitting the protective member is performed. At this time, a backhoe is used as the heavy equipment, and a clam shell or the like is appropriately used as the attachment of the heavy equipment. Here, the drainage and slope protection member can withstand press-fitting of heavy machinery,
For example, the one described in the embodiment of claim 1 is used. Next, during the protective member press-fitting process, repair and shaping of the slope roughened by the heavy machine is performed in the slope repair process, and then,
Perform the vertical drainage passage installation process. In this vertical drainage passage arranging step, a vertical groove is formed on the slope by hand digging by an operator, a waterproof layer is provided on the surface of the groove by a waterproofing means such as a waterproof sheet, and a porous layer is formed on the waterproof layer. Fill it with a water-permeable material such as a particle, and make it the same height as the slope. This vertical drainage passage is provided so as to communicate with the drainage and slope protection member.
Next, in the horizontal drainage passage arranging step, a horizontal drainage passage such as a U-shaped groove is provided so as to communicate with the vertical drainage passage along the slope and the step. The slope protection method of the present invention can be carried out in a sequence other than the above.

As described above, in the slope protection construction method of the present invention, the construction of slope slope protection work and drainage construction, which has been conventionally performed manually by workers, is performed by using a heavy machine such as a backhoe. By doing so, the construction period and construction cost can be reduced.

In the embodiments of claims 2 and 3, the drainage and slope protection member 1 of the embodiment of claim 1 has been used as the drainage and slope protection member. In the embodiment of the present invention, the slope protection member is not limited to this as long as it is a slope protection member that can also be used as a drainage passage. This is not particularly limited as long as it is a member. Therefore, the embodiments of claims 1 to 3 can be implemented separately.

[0024]

EFFECT OF THE INVENTION The drainage and slope protection member of the present invention not only functions as a slope protection member for preventing sediment outflow and slope collapse of the slope surface, but also adds surface water, spring water and permeated water on the slope. It also functions as a drainage passage for draining water. Further, the slope protection structure of the present invention, since the slope protection combined drainage passage, the vertical drainage passage and the horizontal drainage passage are respectively independently arranged, even when subsidence due to compression or the like occurs on the slope, Upon repair, the damaged drainage / slope protection member, vertical drainage passage or horizontal drainage passage can be replaced easily for repair. Further, the slope protection method of the present invention shortens the construction period by performing the construction of the slope protection member and the drainage passage, which were conventionally performed manually by a worker, by using a heavy machine such as a backhoe. And construction costs can be reduced.

[Brief description of drawings]

FIG. 1 is a drainage work / slope protection member of the present invention, wherein FIG. 1 (a) is a sectional view taken along line AA in FIG. 1 (b),
The figure (b) is a front view and the figure (c) is a plan view.

FIG. 2 is a partial view from the top to the step of the embankment to which the slope protection structure of the present invention is applied, FIG. 2 (a) is a side view,
(B) figure is a BB side view of (a) figure.

FIG. 3 is a sectional view taken along line CC of the vertical drainage passage of FIG. 2 (b).

[Explanation of symbols]

 1, 1a, 1b Drainage and slope protection member 2 Steel plate (plate) 3 Angle steel (pile) 4 Sponge (porous body) 5 Mesh (water permeable covering material) 6 Gutter material 10 Slope protection structure 11 Vertical drainage passage 12 Top end 13 Slope 14 Horizontal drainage passage 15 Small stage

Claims (3)

[Claims] 1. A slope protection member used for embankment slope protection in earthwork, which comprises a dam plate, a pile fixed to a required portion of the dam plate, and a gutter member for forming a groove in the dam plate. And a drainage and slope protection member comprising a water-permeable covering material provided on the gutter material via a porous body. 2. An embankment slope protection structure for earthwork, comprising a horizontal drainage passage provided along a slope and a step, and a vertical drainage passage communicating with the horizontal drainage passage and provided on the slope. A slope protection structure comprising a slope protection and drainage passage provided on the slope and communicating with the vertical drainage passage as a branch from obliquely above to below. 3. A slope protection method after shaping an embankment slope in earthwork, comprising: (1) a protection member press-fitting step of press-fitting a drainage / combined slope protection member into the slope, and (2) the protection. A slope repairing step for repairing and shaping the slope of the member press-fitted, and (3) a vertical drainage passage providing step for providing a vertical drainage passage communicating with the drainage-use slope protection member on the slope, 4)
(1) to the horizontal drainage passage disposing step of providing a horizontal drainage passage communicating with the vertical drainage passage along a slope or a small step
A slope protection method constructed by combining the respective steps of (4).