JP4446829B2 - Slope stabilization method - Google Patents

Description

The present invention relates to slope stabilizing construction method by laying installed and net are distributed anchor the slope to stabilize the slope.

As a slope stabilization method for stabilizing the slope, a slope stabilization method in which a large number of anchors are distributed and installed on the slope is known. In this case, generally, an anchor bolt is used as an anchor, and a supporting pressure plate is attached to each anchor bolt and fastened to give a supporting pressure to the ground. That is, the ground is restrained by the resistance of the anchor bolt itself, and the ground restraining effect is enhanced by the bearing pressure of the bearing plate.
In addition, in this kind of slope stabilization method, there is also a slope stabilization method in which anchors are connected with ropes and tension is applied to the ropes (Japanese Patent Laid-Open No. 2000-136535). In this case, the ground restraint effect is further enhanced by transmitting the load to the anchor above the slope adjacent to the rope when the mass movement occurs.

There is also a slope stabilization method that increases the ground restraint effect by laying a net instead of a rope and pressing the slope in a plane with this net.
For example, in Japanese Patent Laid-Open No. 2001-81784, a wire (PC steel strand) is laid in a lattice shape on a net laid on a slope, and this lattice wire is pushed down by a bearing plate attached to the anchor head. The net is pressed against the slope through the grid wire, and the slope is pressed into a plane.
Moreover, in Unexamined-Japanese-Patent No. 2001-11863, the slope is planarly pressed by pressing the net laid on the slope with the bearing plate attached to the anchor head.
As described above, all of the conventional methods of laying the net together with the anchor installation directly press the net against the slope.
JP 2000-136535 A JP 2001-81784 A JP 2001-11863 A

Although it is effective to lay a net and hold the slope in a planar shape in order to enhance the ground restraining effect, it is desirable that the ground restraining effect by this net can be further enhanced.
The present invention has been made based on the above background, and an object of the present invention is to provide a slope stabilization method that can further enhance the ground restraint effect by a net in a slope stabilization method that lays a net together with anchor installation. To do.

The invention of claim 1 which solves the above-mentioned problem is a slope stabilization method in which anchors are distributed and installed on a slope and a net is laid.
At any point of the laid net, the wire is slidably engaged with the net while making a diameter-reducible loop, and the net is tightened by contracting the loop by pulling the wire, giving tension to the net, Next, the loop intersection is fixed so that the loop of the wire does not expand.
Here, the loop intersection refers to a wire intersection or a wire contact portion when a loop is formed by bending one wire.

The invention of claim 2 is a slope stabilization method in which anchors are distributed and installed on a slope and a net is laid.
At any point of the laid net, loop metal fittings with wire insertion holes for slidably inserting the wire are attached to the surrounding net wires at multiple locations, and the wires are passed through the wire insertion holes of the loop metal fittings. A loop that can be reduced in diameter is formed, the wire is pulled to contract the loop, the net is tightened, tension is applied to the net, and then the loop intersection is fixed so that the loop of the wire does not expand. .

The invention of claim 3 is a slope stabilization method in which anchors are distributed and installed on slopes and a net is laid.
At any point on the installed net, loop metal fittings with wire insertion holes through which the wire can be slidably inserted are attached to a plurality of locations of the net wire that surrounds one mesh, and the wire is inserted through the wire for the loop metal. Make a loop that can be reduced in diameter through a hole, contract the mesh by pulling the wire and contracting the loop, giving tension to the net, and then fixing the loop intersection so that the loop of the wire does not expand It is characterized by doing.

According to a fourth aspect of the present invention, in the slope stabilization method according to the second or third aspect, the loop metal fitting has a concave groove parallel to the wire insertion hole, into which the wire of the net can be inserted from the side, and the net is provided in the concave groove. The wire is inserted from the side and then compressed and attached to the net wire.

The invention of claim 5 is a slope stabilization method in which anchors are distributed on a slope and a net is laid.
At any point of the laid net, a plurality of meshes having an annular arrangement surrounding at least one mesh are formed into a loop that can be reduced in diameter, and the loop is contracted by pulling the wire to thereby reduce the loop arrangement. A plurality of meshes are attracted to the center of the loop to give tension to the net, and then the loop intersection is fixed so that the wire loop does not expand.

According to a sixth aspect of the present invention, in the slope stabilization method according to any one of the first to fifth aspects, the net is a net in which a wire or a ring of wire is entangled with each other to form a mesh.

Claim 7 is the slope stabilization method according to claims 1 to 6, wherein the loop intersection fixing bracket for fixing the loop intersection so as not to expand the loop of the wire passes two U-bolts and screw shafts on both sides thereof. A wire clip consisting of a holding tool having a hole and nuts screwed to the screw shafts on both sides of the U bolt is used, and the wire overlapping portion at the loop intersection is fastened and fixed with this wire clip.

The invention according to claim 8 has a wire insertion hole through which the wire is slidably inserted as the loop intersection fixing means for fixing the loop intersection so that the loop of the wire does not expand in the slope stabilization method of claims 1-6. A loop intersection fixing bracket made of a compressible metal is attached to the proximal end side of the wire.

A ninth aspect of the present invention provides the slope stabilization method according to the eighth aspect, wherein the loop intersection fixing metal fitting is provided with a second wire insertion hole for engaging a wire base end portion, and a base end portion is provided in the second wire insertion hole. The loop intersection fixing bracket is attached to the base end portion of the wire so as not to be pulled out by inserting a wire having an enormous portion formed into the wire from the distal end side.

Claim 10 is a slope stabilization method in which anchors are distributed and installed on slopes and a net is laid.
The net is a net in which a wire or a wire ring is entangled with each other to form a mesh, and a part of the ring is
A loop type in which a loop intersection fixing bracket having a wire insertion hole through which a wire is slidably inserted is attached to one end side, and the other end side of the wire is passed through the wire insertion hole of the loop intersection fixing bracket to form a loop that can be reduced in diameter. A ring,
The loop ring is contracted by pulling the wire to contract the loop, tension is applied to the net, and then the loop intersection is fixed so that the loop of the wire does not expand.

Claim 11 is a slope stabilization method in which anchors are distributed and installed on a slope and a net is laid.
The net is a net in which a wire or wire ring is entangled with each other to form a mesh, and all the rings are
A loop type in which a loop intersection fixing bracket having a wire insertion hole through which a wire is slidably inserted is attached to one end side, and the other end side of the wire is passed through the wire insertion hole of the loop intersection fixing bracket to form a loop that can be reduced in diameter. Composed of rings,
The loop ring is contracted by pulling the wire in any loop type ring to contract the loop ring, tensioning the net, and then fixing the loop intersection so that the loop of the wire does not expand To do.

Claim 12 is a slope stabilization method according to claims 1 to 11, wherein the head side of each anchor is a threaded portion, and a supporting pressure plate is attached to the head and fastened to give a supporting pressure to the ground. Features.

In the slope stabilization method that lays the net together with the anchor installation, the ground is restrained by the resistance of the anchor itself and the ground is stabilized, and the ground restraining effect is enhanced by the ground pressing action by pressing the ground into the surface. However, in the present invention, at any point of the laid net, the wire is looped while being engaged with the net, and the net is tightened by pulling the wire and contracting the loop, thereby applying tension to the net (ie, the net). Therefore, when the mass movement occurs, the load can be transmitted to the anchor above the slope immediately through the net, so that the soil restraint action can be exerted at an early time when the mass will undergo a slight deformation. And the ground restraint effect is improved.
In addition, as a means for applying tension to the net, it is possible to perform a simple operation by pulling a wire that is engaged with the net and forming a loop and fixing the loop intersection with a loop intersection fixing bracket or the like. There is no difficulty in bringing in a special machine on a stable slope, and workability is good.

According to the slope stabilization method of claim 2, by attaching the loop metal fitting having a wire insertion hole to a desired portion of the net, the mesh shrinkage portion of the net by the wire can be arbitrarily set.
According to the method of claim 3, one mesh can be evenly contracted, and a radial uniform tension can be applied to the net.

When the loop metal fitting of claim 4 is used, the wire rod of the net can be fitted and fixed from the side into the concave groove, so that the loop metal fitting can be easily fixed to the net, and the conventional net is simply laid. This is effective when the present invention is applied to a slope stabilization net.

According to the slope stabilization method of claim 5, since the loop can be formed in such a manner that the wire is engaged with the mesh intersection of the net, it is not necessary to use a separate loop metal fitting, and the construction is simplified.

In the present invention, since a larger mesh is easier for the operation of tightening the net, it is preferable to use a net made of a ring that can easily form a large mesh as the net.

When a wire clip is used as in the seventh aspect, the loop fixing operation can be easily performed only with a spanner. Moreover, since a commercially available wire clip can be used, it is convenient.

According to the eighth aspect, the loop of the wire is formed by the loop intersection fixing bracket attached to the proximal end portion of the wire, and the loop can be fixed by compressing the loop intersection fixing bracket, so that the number of necessary parts can be reduced. It is preferable in terms of workability and economical efficiency.

According to the ninth aspect, since the wire can be prevented from coming off by the enormous portion of the proximal end portion of the wire only by passing the wire through the second wire insertion hole for engaging the proximal end portion of the loop intersection fixing bracket, It becomes easy to attach the fixture to the proximal end of the wire.

  According to the slope stabilization method of claim 10, since the mesh itself to be contracted is formed by a wire loop, uniform contraction of the mesh is performed, and radial uniform tension can be applied to the net. . In addition, the contraction of the wire loop is the same as the contraction of one mesh (ring) of the net, so that the configuration is further simplified.

  According to the slope stabilization method of claim 11, since all the rings of the net made of rings are formed of wire loops, any mesh can be selected and contracted, depending on the situation at the construction site. It is possible to generate tension on the net at an appropriate point.

Hereinafter, an embodiment of the slope stabilization method of the present invention will be described with reference to FIGS .

1 to 6 show an embodiment of the slope stabilization method of the present invention. FIG. 1 illustrates the vicinity of a net tightening portion in the slope stabilization method of the embodiment. FIG. 2 is a cross-sectional view of the main part of the slope before the net tightening, and FIG. 2 is a schematic diagram before the net tightening of the slope in FIG. FIG. 3 is a schematic plan view after net tightening.
In the slope stabilization method of this embodiment, a large number of anchor bolts 1 are distributed and installed on the slope, and a net 2 is laid. A bearing plate 3 is attached to the head of each anchor bolt 1, and the top of the anchor bolt 1 is attached. This is a construction method in which the nut 4 screwed into the screw is screwed to fasten the bearing plate 3 to give the bearing pressure to the ground. 1 to 3 show a stage before the bearing plate 3 is attached to the head of the anchor bolt 1 and fastened.

In the present invention, at any point of the laid net 2, the wire 10 is slidably engaged with the net 2 while making the loop 10 a capable of reducing the diameter, and the wire 10 is pulled to contract the loop 10 a. Is tightened to apply tension to the net 2 and then fix the loop intersection so that the loop 10a of the wire 10 does not expand.

In this embodiment, as shown in FIG. 15, a net made of a ring, that is, a net in which a wire or wire ring 2 a is entangled with each other is used as the net 2. FIG. 17 shows a partially enlarged view of the net 2 made of a ring. In this embodiment, the anchor bolt 1 is located in the ring 2a of the net 2, but the anchor bolt 1 may be located between the rings 2a as shown in FIG. As a specific example, for example, the mesh pitch is 50 cm, and the anchor bolts 1 are similarly installed at intervals of about 2 meters.

A specific construction procedure will be described. After the anchor bolts 6 are drilled at the positions where the anchor bolts 1 on the slope are to be installed, the anchor bolts 1 are inserted, and then grouts 7 are injected into the anchor holes 6. Secure to the ground. Next, the net 2 is laid. It should be noted that the net is not limited to being laid in the entire anchor installation area, but may be laid only in part. Normally, the net 2 is laid after the anchor bolt 1 is installed, but it is not necessarily excluded that the anchor bolt 1 is installed after the net 2 is laid.

Next, the net 2 is tightened by the wire 10 at an appropriate point of the net 2 to give tension to the net 2. In this embodiment, the net 2 is tightened by contracting one mesh of the net 2. Specifically, as shown in FIG. 2, loop metal fittings 12 are fixed in advance at, for example, four places on the circumference of one mesh to be contracted. 4 and 5, the loop metal fitting 12 has a wire insertion hole 12a through which the wire 10 is slidably inserted. As shown in the drawing, the wire 10 is inserted into each wire insertion hole 12a. Further, the vicinity of both ends of the wire 10 is inserted into the wire clip 13 to form the loop 10a. The loop metal fitting 12 may be fixed to the net 2 in a state where the wire 10 is passed through the wire insertion holes 12a of the four loop metal fittings 12 in advance.

The wire clip 13 constitutes a loop intersection fixing metal fitting to be described later. At this stage, the wire clip 13 is merely inserted through the vicinity of both ends of the wire 10 and is not fastened and fixed. Although this wire clip 13 is a commercial product, as shown in FIG. 6, as shown in FIG. 6, a U-bolt 15, a presser 16 having two holes 16 a through which screw shaft portions 15 a are passed on both sides, It consists of nuts 17 that are respectively screwed into the shaft portions 15a, and both side portions of the wire 10 are passed through the U-shaped voids of the U bolts 15, the nuts 17 are tightened, and both side portions of the wire 10 are overlapped and fixed integrally. Can do.

Next, one end of the wire 10 is pulled to contract the loop 10a of the wire 10 as shown in FIG. 3, thereby contracting the one mesh of the net 2 with which the wire 10 is engaged. After tightening the net 2 and applying tension to the net 2, the nut 17 of the wire clip 13, which is a loop intersection fixing bracket, is tightened, and the overlapping portion of the wire 10 is tightened and fixed. It is fixed and the tension state of the net 2 is maintained.
The means for fixing the loop metal fitting 12 to the net 2 is arbitrary. For example, when making the ring 2a forming the mesh of the net 2 to be contracted, a material wire or wire is opened in the loop metal fitting 12 in advance. The loop metal fitting 12 can be fixed to the ring 2a by being inserted into the hole and made into a ring and then compressed (crimped) with a compression tool. The loop metal fitting 12 is suitably fixed to the wire of the net 2 as in the embodiment, but may be slidable with respect to the net wire.
The wire clip 13 may not be attached to the wire 10 before the loop 10a of the wire 10 is contracted, but may be tightened and fixed through the overlapping portion of the wire 10 after the loop 10a is contracted.

Thereafter, the bearing plate 3 is put on the head of the anchor bolt 1, and the nut 4 is screwed onto the top of the anchor bolt 1 and tightened to push down the bearing plate 3. The illustration of the state of being fastened with the support plate 3 is omitted.

In the above-mentioned slope stabilization method, the ground is stabilized by the ground being restrained by the resistance of the anchor bolt 1 itself embedded in the ground. And the ground restraint effect increases with the bearing effect by the bearing plate 3 pressing a ground. Furthermore, the ground restraining effect is further enhanced by the ground pressing action by the net 2 pressing the ground surface, but the net 2 is tightened by the wire 10 and is in a tension state. Thus, the load can be transmitted to the anchor bolt 1 above the slope via 2, and therefore, the ground restraint action can be exhibited at an early point in time when the soil mass undergoes a slight deformation, contributing to the stabilization of the ground.
Moreover, as means for giving tension to the net 2, it is sufficient to operate the wire 10 as a loop, engage the net 2, pull one end side (or both end sides) to contract the loop, and fix it in that state. Since it is possible to work manually, there is no difficulty in carrying a special machine on an unstable slope, and the workability is good.

7 and 8 show another embodiment of the loop metal fitting. The loop metal fitting 22 of this embodiment is made of a compressible metal such as aluminum, a wire insertion hole 22a through which the wire 10 is inserted, and a recess parallel to the wire insertion hole 22a and into which the wire of the net 2 can be inserted from the side. The configuration has a groove 22b.
In this embodiment, the wire 10 is passed through the wire insertion holes 22a of the four loop fittings 22 in advance, and at four locations on the circumference of one mesh of the net 2, as shown in FIGS. After inserting the wire of the net 2 into the concave groove 22b of each loop fitting 22 from the side, the wire 2 is compressed as shown in FIGS. 22 is fixed. A compression part (crimping part) is shown by 22c. Thereby, the loop 10a of the wire 10 similar to FIG. 2 is formed.
According to this embodiment, the loop fitting 22 can be easily fixed to the wire of the net 2. Further, the present invention can be easily applied to an existing net constructed by a conventional construction method in which a net is simply laid.

  9 to 12 show another embodiment of the present invention. In this embodiment, as shown in FIG. 9, the wire 10 is passed through four rings (mesh) 2a around the one ring (center ring in FIG. 9) 2a to be contracted, in the illustrated example, up, down, left and right. The loop 10a can be reduced in diameter, and then the wire 10 is pulled as shown by the arrow in FIG. 12 (a) to contract the loop 10a. Tension is applied, and then the loop intersection is fixed so that the loop 10a of the wire 10 does not expand.

In this embodiment, as a loop intersection fixing means, as shown in an enlarged view in FIGS. 10 and 11 (a), a wire insertion hole 32a through which the wire 10 is slidably inserted and a proximal end portion of the wire 10 are engaged. A loop intersection fixing bracket 32 made of aluminum having a second wire insertion hole 32b for engaging the base end portion is used, and the enormous portion 33 larger than the second wire insertion hole 32b is formed at the base end portion of the wire 10. Is provided.
When the distal end side is inserted into the wire insertion hole 32a after the wire 10 is inserted into the second wire insertion hole 32b up to the proximal end side massive portion 33, the massive portion 33 is prevented from coming off as shown in FIG. In this state, the loop 10a is formed.
12 (a), (b), and (c) show how the loop 10a of the wire 10 is contracted and the loop intersection point is fixed. When the wire 10 is pulled as indicated by the arrow in FIG. 5A, the loop 10a of the wire 10 is contracted as shown in (b) and contracted to a desired size, and then the compression tool is used as shown in (c). Compress to fix. A compression part is shown by 32c. In this case, as shown in FIGS. 11 (b) and 11 (c), it is appropriate to compress and fix the second wire insertion hole 32b side into which the proximal end portion of the wire 10 is inserted. Since the stopper 33 is used to prevent the removal, the second wire insertion hole 32b does not necessarily need to be compressed and fixed.

In the embodiment shown in FIGS. 9 to 12, the loop 10a can be formed in such a manner that the wire 10 engages with the mesh intersection of the net 2, so that the wire 10 directly on the net 2 as in the embodiment shown in FIGS. It is not necessary to separately provide the loop metal parts 12 and 22 to be fixed, the number of parts is reduced, and the construction is also simplified.
Note that the loop intersection fixing bracket may be fixed in advance to the proximal end portion of the wire 10. However, as in the above-described embodiment, if the enormous portion 33 of the proximal end portion is configured to prevent the wire 10 from being attached, Since it is only necessary to pass through the second wire insertion hole 32 b, it is suitable as a means for attaching the loop intersection fixing bracket to the proximal end portion of the wire 10.

FIG. 13 shows still another embodiment of the present invention. In this embodiment, the net 2 to be used is a net formed of a ring as in each of the above-described embodiments, that is, a net in which a wire or a wire ring is entangled with each other to form a mesh. Is formed of a loop type ring 2b formed of a loop 10a (that is, the loop 10a of the wire 10 itself is a loop type ring 2b).
In this embodiment, the loop intersection fixing bracket 32 having the same structure as the loop intersection fixing bracket 32 in the embodiment of FIGS. 9 to 12 is used, and the configuration of one loop ring 2b in this embodiment is as shown in FIGS. The configuration is the same as that of the loop 10a of the wire 10 in the embodiment of FIG. The re-explanation of the configuration of the loop intersection fixing bracket 32 is omitted.
In this embodiment, when manufacturing the net 2 made of a ring, a part of the ring to be contracted is constituted by the loop ring 2b. When the tension is applied to the net 2, the loop 10a (loop type ring 2b) of the wire 10 is contracted in the manner described in FIGS. 12 (a), 12 (b), and (c), and then the loop intersection point. To fix. That is, by pulling the wire 10 as shown by the arrow in FIG. 5A and contracting the loop 10a (the loop type ring 2b) as shown in (b), the loop 10a (the loop type ring 2b) has a desired size. After being contracted, it is compressed and fixed as shown in (c) using a compression tool.
In this embodiment, since the contraction of the loop 10a of the wire 10 is the same as the contraction of one mesh (ring) of the net 2, the configuration is further simplified.
Further, since the mesh itself to be contracted is formed by the loop 10 a of the wire 10, the mesh is uniformly contracted, and the radial uniform tension force can be applied to the net 2.

FIG. 14 shows still another embodiment of the present invention. In this embodiment, the net 2 is also a net composed of a ring, and all the rings are constituted by a loop type ring 2b formed by using the wire 10 as a loop 10a. The loop type ring 2b and the loop intersection fixing metal fitting 32 used therefor are the same as those in the embodiment of FIG.
In this embodiment, all of the net 2 made of a ring is formed by the loop 10a of the wire 10, so that an arbitrary mesh can be selected and contracted, and the net is formed at an appropriate point according to the situation of the construction site. 2 can generate tension.

  1 to 6, the wire clip 13 is used as a loop intersection fixing means for fixing the loop intersection so that the contracted loop 10 a does not expand. Instead of this wire clip 13, FIG. 9 to FIG. A metal fitting having the same structure as the loop intersection fixing metal fitting 32 in the twelfth embodiment can also be used. In this case, the procedure for fixing the loop intersection is substantially the same as that in the embodiment of FIGS.

  In each of the above-described embodiments, a net made of a ring is used as a net. However, the present invention is not limited to this, and a diamond-shaped net 2 'can also be used as shown in FIG. In the case of a rhombus wire mesh, the mesh is usually not so large that a method of contracting only one mesh is not appropriate, and a loop of a certain size including a plurality of meshes is formed through the wire 10 in a plurality of meshes. It is appropriate to contract a plurality of meshes.

In the slope stabilization method of the present invention, it is appropriate to fasten the bearing plate 3 attached to the anchor head and apply the bearing pressure to the ground as in the above-described embodiment, but the anchor is installed on the ground. However, this does not exclude construction methods that do not use bearing plates.
Moreover, although the anchor bolt 1 is used as an anchor in an Example, the anchor which has a thread part only in the upper part may be used. Further, in the case of a construction method that does not use a bearing plate, an anchor without a thread portion may be used. Moreover, the installation of the anchor is not limited to the method of inserting the anchor into the anchor hole previously drilled in the ground and injecting the grout as in the embodiment, but may be a method of driving directly into the ground.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates the vicinity of a net tightening portion in a slope stabilization method according to an embodiment of the present invention, and is a main portion cross-sectional view of a slope before a net tightening. FIG. 2 is a schematic plan view illustrating the vicinity of a net tightening portion in the slope stabilization method of the above embodiment, before the net tightening of the slope in FIG. 1. FIG. 3 is a schematic plan view after net tightening in FIG. 2. It is an expansion perspective view of the part of the loop metal fitting in FIGS. It is AA sectional drawing of FIG. It is detail drawing of the wire clip part which is a loop intersection fixing metal fitting in FIGS. 1-3. FIG. 10 is a perspective view showing another embodiment of the loop metal fitting, and is an enlarged perspective view of a state before the loop metal fitting is fixed to the net wire. 7A is a cross-sectional view taken along the line B-B of FIG. 7, FIG. 7B is a cross-sectional view of the state in which the loop bracket of FIG. is there. FIG. 10 is a schematic plan view before net tightening, illustrating the vicinity of a net tightening portion in a slope stabilization method according to still another embodiment of the present invention. FIG. 10 is an enlarged perspective view showing a loop intersection fixing metal fitting in FIG. 9 before the loop is fixed. 10A is a cross-sectional view taken along the line CC in FIG. 10, FIG. 10B is a cross-sectional view after the loop intersection fixing bracket of FIG. 10A is compressed and loop-fixed, and FIG. 10C is a right side view of FIG. It is. FIG. 10 is a diagram for explaining a procedure for contracting and fixing a wire loop in FIG. 9, (A) is a loop before contraction, (B) is a loop in the middle of contraction, and (C) is a stage where the loop is contracted and fixed. Indicates a loop. FIG. 5 is a schematic plan view of a slope before tightening the net, illustrating the vicinity of the net tightening portion in an embodiment in which the net is a net made of a ring and a part of the mesh is configured by a wire loop. FIG. 2 is a schematic plan view of a slope before tightening the net, illustrating an embodiment in which the net is a net made of a ring and all the meshes are configured by wire loops. It is a top view of the net | network which consists of a ring in each said Example, and shows an example of the anchor position with respect to a net | network. It is a top view of the net | network which consists of a ring in each said Example, and shows the other example of the anchor position with respect to a net | network. It is a principal part enlarged view explaining the detail of the mesh structure of the net | network which consists of the said ring. It is a net top view in case the net | network of this invention is a rhombus metal-mesh, and shows an example of the anchor position with respect to a net | network.

Explanation of symbols

1 Anchor bolt (anchor)
2 Net (Ring network)
2a Ring 2 'Net (Rhombus Wire Mesh)
2b Loop type ring 3 Bearing plate 4 Nut 6 Anchor hole 7 Grout 10 Wire 10a Loop 12 Loop fitting 12a, 22a Wire insertion hole 13 Wire clip (Loop intersection fixing bracket)
15 U bolt 15a Screw shaft part 16 Presser 16a Hole 17 Nut 22c, 32c Compression part (crimping part)
32 Loop intersection fixing bracket 32a Wire insertion hole 32b Second wire insertion hole

Claims (12)

In the slope stabilization method of installing anchors on slopes and laying nets,
At any point of the laid net, the wire is slidably engaged with the net while making a diameter-reducible loop, and the net is tightened by contracting the loop by pulling the wire, giving tension to the net, Next, a slope stabilization method characterized by fixing the loop intersection so that the loop of the wire does not expand. In the slope stabilization method of installing anchors on slopes and laying nets,
At any point of the laid net, loop metal fittings with wire insertion holes for slidably inserting the wire are attached to the surrounding net wires at multiple locations, and the wires are passed through the wire insertion holes of the loop metal fittings. A loop that can be reduced in diameter is formed, the wire is pulled to contract the loop, the net is tightened, tension is applied to the net, and then the loop intersection is fixed so that the loop of the wire does not expand. Slope stabilization method. In the slope stabilization method of installing anchors on slopes and laying nets,
At any point on the installed net, loop metal fittings with wire insertion holes through which the wire can be slidably inserted are attached to a plurality of locations of the net wire that surrounds one mesh, and the wire is inserted through the wire for the loop metal. Make a loop that can be reduced in diameter through a hole, contract the mesh by pulling the wire and contracting the loop, giving tension to the net, and then fixing the loop intersection so that the loop of the wire does not expand A slope stabilization method characterized by The loop metal fitting has a concave groove parallel to the wire insertion hole, into which the wire of the net can be inserted from the side, and after the net wire is inserted into the concave groove from the side, it is compressed and attached to the net wire. The slope stabilization method according to claim 2 or 3, wherein In the slope stabilization method of installing anchors on slopes and laying nets,
At any point of the laid net, a plurality of meshes having an annular arrangement surrounding at least one mesh are formed into a loop that can be reduced in diameter, and the loop is contracted by pulling the wire to thereby reduce the loop arrangement. A slope stabilization method characterized by drawing a plurality of meshes toward the center of the loop, applying tension to the net, and then fixing the loop intersection so that the loop of the wire does not expand. 6. The slope stabilization method according to claim 1, wherein the net is a net in which a wire or a wire ring is entangled with each other to form a mesh.   As a loop intersection fixing means for fixing the loop intersection so that the loop of the wire does not expand, it is screwed into the holding bolt with two holes through which the U bolt and the screw shaft on both sides pass, and the screw shaft on both sides of the U bolt. 7. The slope stabilization method according to claim 1, wherein a wire clip composed of a nut to be used is used, and a wire overlapping portion at a loop intersection is fastened and fixed with the wire clip.   As a loop intersection fixing means for fixing the loop intersection so that the loop of the wire does not expand, a loop intersection fixing bracket made of a compressible metal having a wire insertion hole through which the wire is slidably inserted is attached to the proximal end side of the wire The slope stabilization method according to claim 1, wherein:   The loop intersection fixing bracket is provided with a second wire insertion hole for engaging the proximal end portion of the wire, and a wire having a huge portion formed at the proximal end portion is inserted into the second wire insertion hole from the distal end side. 9. The slope stabilization method according to claim 8, wherein the loop intersection fixing metal fitting is attached to the base end portion of the wire so as not to come off. In the slope stabilization method of installing anchors on slopes and laying nets,
The net is a net in which a wire or a wire ring is entangled with each other to form a mesh, and a part of the ring is
A loop type in which a loop intersection fixing bracket having a wire insertion hole through which a wire is slidably inserted is attached to one end side, and the other end side of the wire is passed through the wire insertion hole of the loop intersection fixing bracket to form a loop that can be reduced in diameter. A ring,
A slope stabilization method characterized by contracting the loop ring by contracting the loop by pulling the wire, applying tension to the net, and then fixing the loop intersection so that the loop of the wire does not expand . In the slope stabilization method of installing anchors on slopes and laying nets,
The net is a net in which a wire or wire ring is entangled with each other to form a mesh, and all the rings are
A loop type in which a loop intersection fixing bracket having a wire insertion hole through which a wire is slidably inserted is attached to one end side, and the other end side of the wire is passed through the wire insertion hole of the loop intersection fixing bracket to form a loop that can be reduced in diameter. Composed of rings,
The loop ring is contracted by pulling the wire in any loop type ring to contract the loop ring, tensioning the net, and then fixing the loop intersection so that the loop of the wire does not expand Slope stabilization method. The slope stabilization method according to any one of claims 1 to 11, wherein the head side of each anchor is a threaded portion, and a bearing plate is attached to the head and fastened to apply bearing pressure to the ground.

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