JPH0526098Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial field of application> This invention relates to gabions for laying on slopes used for river embankment and other revetment works. The present invention relates to a gabion in which a water-blocking layer for waterproofing is formed.

《Prior art》 For example, when waterproofing an embankment or other revetment, such as in revetment work on a river or a bay, it is common practice to spread a seepage sheet on the slope of the revetment, and then lay concrete blocks all over the surface. Or,
Alternatively, the water-blocking sheet is held down by laying gabions all over the place and filling the inside of each gabion with stones or the like.

Of these, gabions are made of a three-dimensional rectangular frame with wire mesh around all four sides and the bottom to prevent stones from being washed away by scouring. After a waterproof sheet has been laid, they are densely placed all over the surface of the sheet, and then stones are filled in. An example of the construction of the gabion is disclosed in Patent Gazette No. 120866, etc. An example of the construction of the concrete blocks is disclosed in Utility Model Publication No. 46-20594, etc. The latter improves the gaps that occur between multiple blocks when they are laid closely together on a slope. In other words, the blocks used are divided into parent blocks and child blocks, and synthetic resin sheets are fixed to the bottom of the child blocks so that they protrude like brims from the four sides,
This is a technology in which the gap between the parent block and the child block is sealed with a brim-shaped protrusion of a synthetic resin sheet.

《Problems to be solved by the invention》 However, with this construction method, after the water-blocking sheet is laid, the individual gabions must be laid in a dense manner, which makes construction cumbersome and time-consuming. It was expensive. Furthermore, since a synthetic resin sheet is generally used as the water-shielding sheet, if a gabion is installed on top of the sheet and filled with stones, etc., there is a risk that the water-shielding sheet will be damaged by the filling material. As a countermeasure to this, the bottom of the gabion may also be covered with fine wire mesh.

The purpose of this invention is to solve the above-mentioned problems and to provide a gabion for laying on a slope in which waterproofing work can be completed at the same time as the laying of the gabion.

<Means for solving the problem> In order to achieve the above object, this invention consists of a three-dimensional rectangular frame whose four peripheries are covered with wire mesh, and which is laid on the slope of a river bank or other revetment. , in a gabion for laying a slope that strengthens the slope by filling the inside with stones, etc., the bottom of the frame is provided with a water-blocking sheet with a cushioning felt integrated on the top. have a seam for overlapping margin protruding from two adjacent sides of the four peripheral edges of the bottom surface, and are provided integrally in advance with the felt positioned on the top surface side, and a plurality of the gabions are attached to the seam. With each gabion laid closely together on the slope surface, a water-blocking layer for waterproofing the slope surface was integrally formed on the bottom of each gabion.

<<Operation>> According to the above configuration, each gabion is densely arranged vertically and horizontally so that the joint part of one gabion is located at the lower edge of the frame of the other gabion, so that the lower surface of the gabion is removed as soon as the laying of the gabion is completed. A water-blocking layer is formed by joining each water-blocking sheet together.

The joints of the water-blocking sheets provided in each gabion are watertightly closed by the weight of the stones filled inside the gabions, providing complete water-tightness at the joints.

<<Example>> Hereinafter, an example of this invention will be described in detail using the drawings.

Figures 1 and 2 show a single gabion according to this invention.

In the figure, a gabion 1 includes a frame 2 framed in the shape of a rectangular parallelepiped, and a pair of reinforcing frames 2a assembled on both longitudinal sides and the bottom of the frame 2.
and a wire mesh 3 assembled to the frame 2 and the reinforcing frame 2a so as to surround the four peripheral sides thereof.
and a water-blocking sheet 4 placed at the bottom of the frame 2.
It is made up of

The water-blocking sheet 4 consists of a vinyl chloride sheet 4a attached to the bottom side of the frame 2, and a cushioning felt 4b laminated and attached on the vinyl chloride sheet 4a at the inner bottom of the frame 2.

The PVC sheet 4a and the felt 4b have joints 5 projecting from two sides of the lower edge of the frame 2 with a predetermined weight.

The gabions 1 having the above configuration are laid on the slope 6a of the seawall 6 in a dense manner in all directions, as shown in FIG.

When laying, one gabion 1 is placed adjacent to the other gabion 1 with the protruding side of the joint 5 facing down and the other gabion 1 with the side of the joint 5 not protruding, and in this way they are laid in a vertical and horizontal grid pattern. Lay down.

When the construction is completed, as shown in an enlarged view in FIG. 4, the lower edge of the adjacent frame 2 rests on the top of each joint 5, and in this state, a large number of stones 7 are filled into the inside of the gabion 1. As a result, the lower edge of the frame 2 located above the seam 5 presses the seam 5, and the adjacent water-shielding sheets 4 are laid on the slope with overlap by the overlap margin of the seam 5. , this part of the seam 5 will be closed watertight by the total weight of the stones 7.

Therefore, by laying each gabion 1 on the slope in a vertical and horizontal grid pattern and filling the inside of each gabion 1 with stones,
A water-blocking layer is integrally formed below it.

<<Effect of the invention>> As explained in detail using the embodiments above, in the gabion for laying on a slope according to this invention, the joint part of one gabion is located at the lower edge of the frame of the other gabion. By arranging each gabion densely in the vertical and horizontal directions, a water-blocking layer made by joining each water-blocking sheet is formed on the lower surface of the gabion at the same time as the laying of the gabion is completed.

The joints of the water-blocking sheets provided in each gabion are watertightly closed by the weight of the stones filled inside the gabions, providing complete water-blocking properties at the joints.

Therefore, in this invention, by laying only the gabions in a densely packed state on the slope, the waterproofing work can be completed at the same time, making the construction easier and completed in a shorter period of time. More specifically, firstly, in the structure of the water-blocking sheet integrated into the bottom of the frame, there is a cushioning felt on the top surface, so when the cage is filled with stones etc. as in the conventional case, It is hard to break and can be installed stably due to its cushioning properties. Secondly, as mentioned above, it is difficult to break, so there is no need to cover the bottom of the gabion with a fine wire mesh, for example. Thirdly, if each gabion is laid closely together on a slope by having a joint for overlap that protrudes from two adjacent sides of the four peripheral edges of the bottom of the frame, for example, a method of overlapping the joints It is possible to improve the quality by being on the same level as the other products.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the gabion according to this invention, Figure 2
The figure is a cross-sectional view of the gabion, FIG. 3 is a cross-sectional view showing the gabion installed on the slope of a seawall, and FIG. 4 is an enlarged cross-sectional view of the same installed condition. 1... Gabion, 2... Frame, 3... Wire mesh, 4
...Waterproof sheet (4a...PVC sheet, 4b...
felt), 5... seam, 6... seawall, 7... stone.

Claims (1)

[Scope of Claim for Utility Model Registration] A frame formed into a three-dimensional rectangular shape is covered with wire mesh on all four sides, and is laid on the slope of a river bank or other revetment, and the inside is filled with stones, etc. In the gabion for laying on a slope, the bottom of the frame is provided with a water-shielding sheet with integrated cushioning felt on the top surface, and two adjacent out of the four circumferential edges of the bottom surface. A plurality of gabions are provided in advance and integrally with a seam for overlapping margin protruding from the side and positioned on the upper surface side, and each gabion is closely placed on the slope with the joint interposed between the gabions. A gabion for laying on a slope, characterized in that a water-blocking layer for waterproofing the slope is integrally formed on the bottom of each gabion in the laid state.