JPH11256546A - Revetment covering - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete-free multiple-nature-type revetment covering. SOLUTION: Stones 2 are bonded to the upper surface of each base mat 1. The mats 1 are each formed chiefly of a polyester nonwoven fabric, the meshes of which are made coarse to such a degree that while mud can barely pass therethrough, water can. The stones 2 are natural stones of various forms each cut into two, bonded to the mats 1 by applying an adhesive to the cut planes. To fix the mats on the ground, anchors are buried into the soil and linear elements are extended in a checkered pattern between the anchors. Thus, a total of nine mats 1 arranged three by three are laid in squares surrounded by the linear elements. To connect the adjacent mats together, stabbings 9 made of the same material as the mats are sewn along the peripheral edge of each mat. The ends of cords 10 are fastened to the linear elements of the anchors. A face of slope in a river is thus covered with the mats having the stones bonded thereto.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a revetment lining for laying on slopes of rivers and lakes to prevent collapse.

[0002]

2. Description of the Related Art In the previous revetment works, the surface was almost completely covered with concrete, but recently, in order to protect nature as much as possible, natural stone and wood are used instead of concrete. It is changing to construction. As an example, first, a suction prevention mat is laid on the slope of a river, and an iron wire basket (futon basket) or a wooden frame is placed on top of it, and cobblestone is packed in it. In the case of a frame, the top is covered with a wire net so that cobbles do not flow. However, such a method requires a basket and a frame, which must be stuffed at the site, which requires a long construction period and high construction costs. In addition, wire mesh and iron wire baskets appear on the top, which impairs the natural scenery.

[0003]

According to the present invention, construction is easy without using concrete, the construction cost is low, and
It is an object of the present invention to provide a seawall lining for maintaining an environment where creatures such as vegetation can coexist in a natural manner without damaging the natural scenery.

[0004]

The revetment lining according to the present invention comprises:
An irregularly shaped stone block with a flat bottom is densely bonded to the top surface of a base mat that has a degree of coarseness that allows water to pass through but not earth and sand. On the slope.

[0005] In order to fix these mats firmly to the ground, it is advisable to embed an anchor in the ground, stretch a striated body between the anchors, and support the mat with the striated body. In order to connect the mats with each other, it is preferable to provide a string around the mat and to connect the mats alternately with the mats. When the mats are joined in this way, it is preferable that the stringing be provided inside the periphery of the mats so that the edges of the mats overlap.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a stone block 2 is adhered to an upper surface of a base mat 1. FIG. The main body of the mat 1 is a polyester non-woven fabric, and its eyes are rough enough to allow almost no soil to pass but moisture to pass. The polyester non-woven fabric is a two-ply structure, and a coarse reinforcing net 1a made of a material (for example, aramid fiber) with little extension is sandwiched between the two non-woven fabrics.

[0007] The stone block 2 adhered to the base mat is obtained by bisecting an irregular natural stone having a diameter of about 15 to 35 cm (such as a cobble stone, a split stone, a field stone) with a cutter. And apply it to the mat 1. As a result, the adhesive oozes into the mat, and the polyester nonwoven fabric and the reinforcing net are adhered to each other to be united, and have sufficient strength for holding a stone block and collapsing earth and sand. The stone blocks 2 are stuck almost densely over the entire surface of the mat. 1
The base mat 1 is 2.0 x 1.5 m in length and width,
The weight when the stone block 2 is attached is about 300 to 1000 kg. Transport is carried on pallets.

In order to fix the mat to the ground, an anchor 5 is embedded in the soil as shown in FIG. 2, and a striated body 6 is stretched between the anchors like a grid. The anchor main body 5a is a steel plate, on which a steel rod 5b is erected, a ring plate 5c is fixed to the upper end thereof, and the striated body 6 is connected thereto. The striated body 6 is a 13 mm-diameter steel rod, and the striated body is tensioned by a turnbuckle 7 provided on the way. All steel materials used are subjected to rust prevention treatment such as galvanization to make them durable.

As shown in FIG. 3, nine mats 1 each having a total of nine mats 1 each having a length and a width are laid out in one cell (the size is 6 m × 4.5 m) surrounded by the striated body 6. As shown in FIG. 4, a string pass 9 made of the same material as the mats is connected along the periphery of each mat to connect adjacent mats.
Is sewn. Cuts 9a are made at regular intervals in the string passing 9, and strings (for example, stainless steel ropes) 10 are alternately passed through the string passing of the adjacent mat. In this manner, the string 10 is drawn and squeezed, and the mats are joined together as shown in a cross section in FIG. The end of the cord 10 is fixed to the striatum 6 as shown in FIG. In addition, the string thread 9 is sewn to a place where the mat 1 is retracted slightly inward from the periphery of the mat so that the mat 1 and the edges of the mat 1 overlap and there is no gap between them. After the nine mats are joined, a string (stainless steel rope) 10 is passed through a string thread on the outer periphery, and the string is bound together with the striated body 6 by a ring 11 (FIG. 6).

In this way, as shown in FIG. 7, the slope (and a part of the riverbed) is covered with a mat to which a stone mass is adhered. Sign 1
2 is a water surface. Gravel or earth and sand is packed between the stone blocks 2, and preferably, plant seeds are sowed and covered on the mat by planting. Stone block 2 is adhered to base mat 1,
Since the base mat 1 is fixed to the ground by the anchor 5, even if washed with water, the stone blocks are not washed away, and the slope and the riverbed are protected from scouring. Gravel and earth and sand packed between the stone blocks are also supported by the stone blocks and are not easily washed away. The base mat 1 prevents the soil from being sucked out from between the stone blocks 2. When the mat is covered with the planting, the roots of the planting pass through the eyes of the mat 1 and extend into the soil, and the mat is firmly fixed to the slope, so that the seawall is further strengthened.

[0011]

According to the revetment lining of the first aspect, a stone block is adhered to the upper surface of the base mat, so that the revetment work can be easily performed by covering a slope of a river. Since an indefinite stone block is used, a landscape close to nature can be obtained. In addition, since the bottom of the block is formed flat and bonded to the mat, high bonding strength can be obtained.

According to a second aspect of the present invention, a string is provided around the mat, and the strings are alternately connected to the strings of adjacent mats so that the mats can be firmly connected to each other. Also, since the string passing is provided inside the periphery of the mat so that the edges of the mat overlap,
No soil is sucked out from the joint.

[0013] Claim 3 embeds an anchor in the ground,
A striated body is stretched between the anchors, and the mat is supported by the striated body, so that the mat can be firmly fixed to the ground.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a revetment lining.

FIG. 2 is a perspective view of an anchor.

FIG. 3 is a plan view of a stretched rod.

FIG. 4 is a perspective view in which mats are connected.

FIG. 5 is a cross-sectional view of mats joined together.

FIG. 6 is a sectional view of a mat connected to a rod.

FIG. 7 is a sectional view showing a construction state of a revetment lining.

[Explanation of symbols]

 Reference Signs List 1 base mat 2 stone block 5 anchor 6 striatum (rod) 9 string passing 10 string (stainless steel rope)

Claims (3)

[Claims] 1. A revetment lining in which an irregularly shaped stone block having a flat bottom is densely adhered to an upper surface of a base mat having a coarseness enough to allow moisture to pass through but not to pass through earth and sand. 2. A string is provided around the mat so that the strings are alternately connected to the strings of adjacent mats, and the mats are overlapped so that the mats overlap when joined in this manner. The seawall lining according to claim 1, which is provided inside the periphery of the seawall. 3. The seawall lining according to claim 1, wherein an anchor is embedded in the ground, a striated body is stretched between the anchors, and the mat is supported by the striated body.