JPH11181741A - Slope block and lining method - Google Patents

Abstract

(57) [Summary] [Problem] To improve the slope protection using a steel cage because it is troublesome, and there is structural concern about flooding and land subsidence. A concrete four-peripheral frame in which a slope is formed, a suction prevention material is laid, a chestnut stone layer is formed thereon, and four sides each having a rectangular cross section are integrally formed in a frame shape on the chestnut stone layer. And a net provided so as to close the entire opening in the four-circle frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slope block and a slope covering method.

[0002]

2. Description of the Related Art Conventionally, when laying stone materials such as chestnut stone on a slope to protect a riverbank or a slope, there is a risk that the chestnut stone layer may be washed away or collapsed by an external force such as a flood or an earthquake. There is an iron wire cage type method in which a steel wire basket is used, and a stone material is put in the iron wire cage.

[0003] This construction method has flexibility to the change of the ground behind, and the gap between the chestnut stones is suitable for the inhabitation and growth of living creatures. There is a feature that greening is possible.
On the other hand, while winding the coil using wire mesh on site,
Assemble the basket at a predetermined position on the slope, pack the chestnuts etc. into each basket finely divided on the slope, pack the chestnut stone, cover the wire mesh of the top lid, and sequentially coil with the wire mesh that was initially constructed It is necessary to be connected, and it takes a lot of skill and time to assemble the iron wire cage.
In addition, due to external forces such as flooding and land subsidence, the iron wire cage may be broken and the chestnut stone may come out of the cage, which is structurally uneasy.

[0004] In recent years, there has been an increasing tendency to get acquainted with the water of rivers, and the waterside is often used for playing in water. An exposed end of a wire mesh or an iron wire may injure a user and cause personal injury.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a slope block and a method for overcoming the above-mentioned disadvantages while utilizing the above-mentioned features.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a concrete four-frame frame in which four sides each having a rectangular cross section are formed into a frame, and a net provided so as to close the entire opening in the four-frame frame. A slope block comprising: The net is a net formed by combining corrosion-resistant steel or the like in a lattice shape.

In the present invention, it is preferable to provide a recess for forming a gap between adjacent blocks on a central outer surface of four sides of the four-sided frame, and a cross-sectional shape of four sides of the four-sided frame of the slope block. However, it is preferable to have a convex arc-shaped surface portion that is in line contact with the adjacent block because flexibility can be imparted to the adjacent block. The line contact portion may be a part of the side. In addition, corners are cut outside the four corners of the four-sided frame, connecting hooks for connecting four adjacent blocks whose corners are adjacent to each other are protruded from the corner cuts, and the four blocks adjacent to each other at the corners are connected to this corner. Connect and integrate with the connecting hook.

A method of coating a slope using the above-described slope block is as follows. That is, in the method of the present invention, a slope is formed, a rock stone layer is formed thereon, and any of the above-described slope blocks is continuously laid on the rock stone layer,
This is a method of forming a slope by forming a slope. If the slope is to be slope-covered, after forming the slope, lay a suction-prevention material or water-blocking sheet as necessary, and then form a chestnut stone layer thereon. Also, the Kuriishi Formation thickens the part with a greater water depth than the position of 0.5 to 1.5 m above the low water level, and between the position of 0.5 to 1.5 m above the low water level and the high water level. If the part is made thin, it is possible to obtain appropriate revetment for scouring, etc., which is reasonable. In addition, it is also possible to perform a guest soil in a four-round frame.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of the revetment of the embodiment, FIG. 2 is a front view of a slope block 1 of the embodiment, and FIG. 3 is an enlarged sectional view of the four-round frame 2 shown in FIG. Slope block 1
As shown in FIG. 2, a quadrilateral frame 2 made of concrete or reinforced concrete having a square or rectangular shape as a whole is provided, and a net 3 is provided inside the quadrilateral frame 2. Four frame 2
Has a substantially rectangular (square) cross-section, as shown in FIG.
It is. The attachment position of the net 3 is attached to the lower surface 5 of the four-peripheral frame 2 or a range within 5 cm from the lower surface 5.

[0010] Slope block 1 of the present invention laid on the slope
Is connected to the four peripheral frames 2 by metal fittings, and all the slope blocks 1
Functions as an integral body, and functions to stabilize the lower part such as chestnut stone (concrete waste material can be used instead of chestnut stone) by the weight of the four peripheral frame 2 of the slope block 1. The net 3 is made of a corrosion-resistant material (galvanized,
A net is formed by combining a steel material plated with a corrosion-resistant material such as zinc aluminum plating or aluminum plating, a steel material whose surface is coated with an epoxy resin, a stainless steel material, or a FRP bar or wire) in a grid. To do it. The net 3 is for preventing the stones and the like under the block from projecting from the inside of the four-round frame 2 after the construction of the slope block 1. If it is installed at a position more than 5 cm above the lower surface 5 of the four-round frame 2, the gap between the net 3 and Kuriishi is too large,
There is a risk that the stones and the like will move significantly and the stability of the slope will be impaired. Within the stated range of 5 cm or less, the migration of the rubble stones that would cause a problem with the stability of the slope does not occur. Most preferably, it is most suitable to be mounted at the position of the lower surface 5 of the four-peripheral frame 2.

At four corners of the four-circle frame 2, connecting hooks 4 are provided, and the connecting hooks of the four blocks are connected to adjacent blocks by separate connecting metal fittings. FIG. 4 shows another embodiment of the present invention.
The slope block 1 shown in FIG. 4 shows a structure in which a concave portion 12 is provided in the four-peripheral frame 2 so that the adjacent block 1 a and the four-peripheral frame 2 form a gap 13. An AA arrow view of this portion is shown in the left half of FIG. The width of the gap 13 is made smaller than １ ／ of the opening size of the net attached to the four-peripheral frame 2. Alternatively, a wire similar to the net may be arranged in this gap. From this gap, you can see Kuriishi,
The four-peripheral frame 2 looks thin, which is preferable in view.

Further, an arc-shaped portion 15 is provided on the side surface of the portion 14 in contact with the adjacent block shown in FIG. 4, so that the adjacent blocks make line contact with each other. The right half of FIG. 5 shows a view of this part taken along the line BB. In this case, the contact with the adjacent block becomes a line contact, and the stiffness can be obtained.
Can follow, and there is no gap between the stone and the four-circle frame 2.

Next, a case in which the method of the present invention is applied to a seawall slope will be described with reference to FIG. (1) First, the slope 43 is formed with a predetermined gradient. (2) If necessary, a suction prevention member 34 or a water-blocking sheet is laid on the slope 43. (3) Lay the stones 32 and 33 on the slope.

In the case of a river, the riverbed height may fluctuate due to scouring and sedimentation of the river, and the low water level (LWL) 42 may change. Therefore, the planned low water level (LWL) ) 4
With reference to the position 44 of 0.5 to 1.5 m above the upper part 2, a large chestnut stone 32 having a diameter of 15 to 30 cm is used for the portion below it, and the thickness of the chestnut stone layer is about 40 to 80 cm. The space between the stone and the stone is a habitat for fish and shellfish.Therefore, an appropriate space can be obtained in consideration of the type of fish and shellfish that live there, and the thickness of the rock and stone in consideration of the gradient and river flow velocity. To decide. In addition, the planned low water level (LWL) 4
The part from the position 44 of 0.5 to 1.5 m above 2 to the high water level (H, W, L) 41 above is 5 to 20 cm in diameter
Is used, and the thickness of the chestnut layer is about 20 to 40 cm. Also in this case, the thickness of the Kuriishi layer is determined in consideration of the slope of the construction site, the flow velocity, and the like. Instead of Kuriishi,
Concrete waste may be used.

(4) The slope block 1 of the present invention is placed on the stone.
Place. The mesh size of the net of the slope block 1 is smaller than the minimum size of the chestnut to be used so that the chestnut does not come off. Generally, L. W. L. In the part below the position of 0.5 to 1.5 m above, a mesh with a mesh having a mesh opening smaller than 15 cm is used. W. L. In a portion above the position 44 which is 0.5 to 1.5 m above, a four-circle frame with a net having a mesh size smaller than 5 cm is used.

(5) The slope blocks 1 are connected. The corners of the four-sided frame with the net of the slope block 1 are connected to each other with a connection fitting such as a shackle. (6) If necessary, W. L. 0.5-1.
The soil is placed on the Kuriishi layer above the position 44 at 5m. The slope can be greened in a relatively short period of time when the soil is installed. In places where sedimentation is expected during a flood, it is not particularly necessary to carry out the soil.

When soil is applied or soil is accumulated due to flooding, etc., the vegetation grows in this gap in addition to the inside of the four-sided frame, so the four-sided frame is hidden, and a landscape in which the entire slope is greened is obtained. can get.

[0018]

Since the present invention is constructed as described above, it has flexibility to the change of the ground behind, and the chestnut stone and the chestnut stone space are suitable for the inhabitation and growth of living organisms, and can be applied to the soil or used during flooding. Greening becomes possible by the accumulation of earth and sand. The four-peripheral frame is made of concrete or reinforced concrete, and has a sufficient strength, so that it can be semi-permanently protected without being broken even when an external force such as a flood or an earthquake is applied.
After laying the stone on the slope, the slope block of the present invention is simply installed and interconnected, so that the construction is quick and easy. It also has the advantages of both the ease of construction of the concrete-clad block method and the consideration of nature, such as securing a living space and the greening of the wire-cage method.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a slope block of a method for lining method of the present invention.

FIG. 2 is an explanatory diagram of an embodiment.

FIG. 3 is a cross-sectional view of one side of a four-circle frame.

FIG. 4 is a plan view of a slope block according to another embodiment.

FIG. 5 is a view taken along arrows AA and BB in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slope block 2 Four circumference frame 3 Net 4 Connecting hook 5 Lower surface 11 Center part of each side of four circumference frame 12 Depression 13 Gap 14 Line contact with adjacent block 15 Arc-shaped part 21 Corner cut 31 Lower edge foundation 32 Kuriishi (Large) 33) Kuriishi (small) 34 Suction prevention material 41 High water level (HWL) 42 Low water level (LWL) 43 Slope 44 0.5 to 1.5m above low water level

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Masahiro Shimizu Shinjuku Gyoen Building, Mitsubishi Materials Building Materials Co., Ltd. 2-3-10 Shinjuku, Shinjuku-ku, Tokyo

Claims (7)

[Claims] 1. A method comprising: a concrete four-frame frame in which four sides each having a rectangular cross section are formed in a frame shape; and a net provided to close an entire opening in the four-frame frame. Face block. 2. The slope block according to claim 1, wherein a concave portion is formed on an outer surface of a central portion of four sides of the four-sided frame so as to form a gap between adjacent blocks. 3. The slope according to claim 1, wherein the cross-sectional shape of four sides of the four-sided frame of the slope block has a convex arcuate surface portion which is in line contact with an adjacent block. block. 4. A corner cut is made outside four corners of the four-round frame,
2. A connecting hook for connecting four adjacent blocks whose corners are adjacent to each other, protruding from said corner cut.
4. The slope block according to any one of to 3 above. 5. The method according to claim 1, wherein a slope is formed, a suction-prevention mat is laid, a chestnut layer is formed thereon, and the chestnut layer is formed on the chestnut layer.
4. A method of forming a slope, wherein the slope blocks according to any one of 4 are continuously laid and arranged to form a slope. 6. The Kuriishi Formation is 0.5 to above the low water level.
6. The method according to claim 5, wherein a portion having a larger water depth than the position of 1.5 m is thickened, and a portion between 0.5 to 1.5 m above the low water level and the high water level is thinned. Law lining method. 7. The method of claim 5, wherein soil is applied to the inside of the four-round frame.