US20080157045A1

US20080157045A1 - Falling Rock Preventing Fence With Fabrication Typewire Net

Info

Publication number: US20080157045A1
Application number: US11/816,815
Authority: US
Inventors: Joong Suk Park; Mi Rye Seo
Original assignee: KUM-DONG STEEL CONSTRUCTION Co Ltd
Current assignee: KUM-DONG STEEL CONSTRUCTION Co Ltd
Priority date: 2005-04-30
Filing date: 2006-04-27
Publication date: 2008-07-03
Also published as: WO2006118392A3; RU2007132224A; AU2006241646A1; KR100515730B1; BRPI0607980A2; KR20050047070A; WO2006118392A2; EP1877623A2; ZA200706726B; EP1877623A4; JP2008540872A

Abstract

A falling rock preventing fence assembled with a steel net is disclosed, in which a plurality of support members are provided in a pipe shape having a rectangular grooves in upper and lower longitudinal directions, with the support member being installed on the ground at regular intervals, and both ends of the steel net formed in a rectangular plate shape are inserted into the rectangular grooves of the neighboring support member and are fixed using a fixture such as a bolt, etc., and the upper and lower portions of the steel nets stacked in the upper and lower direction are connected with a connection member such as a bolt, etc., and the strength of the steel net is enhanced by the rectangular grooves longitudinally formed in the support member and the end of the steel net inserted in the rectangular groove.

Description

TECHNICAL FIELD

The present invention relates to a falling rock preventing fence in which a steel net is provided based on an assembling type, and in particular to a falling rock preventing fence assembled with fabrication type wire net in which a plurality of support members are provided in a pipe shape having a rectangular grooves in upper and lower longitudinal directions, with the support member being installed on the ground at regular intervals, and both ends of the steel net formed in a rectangular plate shape are inserted into the rectangular grooves of the neighboring support member and are fixed using a fixture such as a bolt, etc., and the upper and lower portions of the steel nets stacked in the upper and lower direction are connected with a connection member such as a bolt, etc., and the strength of the steel net is enhanced by the rectangular grooves longitudinally formed in the support member and the end of the steel net inserted in the rectangular groove, so that the work for installing steel nets between the support members is easy and simply. Even when a steel net is damaged by falling rocks or landslide, it is needed to repair only the damaged portions, so that a maintenance is easy, and a cost for the repair decreases.

BACKGROUND ART

Generally, a falling rock preventing fence is a safety facility which is designed to prevent various vehicle and life accidents which occur as rocks fall or landslide occurs at a road neighboring with a cut side of a mountain.
As shown in FIG. 1, the conventional falling rock preventing fence comprises a plurality of support members 10 which are installed on the ground at regular intervals and are formed in a H shape, a plurality of wire ropes 20 which horizontally cross the support members 10, a plurality of wire rope fixtures 21 which are fixedly installed at the support members 10 provided at both ends and are used for fixing both ends of the wire rope 20, and a steel net 30 which is engaged at the back sides of the support members 10.
However, in the conventional falling rock preventing fence, since the steel net 30 is formed of one long steel net formed in the same manner as the entire length of the falling rock preventing fence 100, the user is needed to unroll the steel net which has a big volume and big weight and is transferred in the rolled state and to install over the entire portions of the back surface of the falling rock preventing fence 100. Since the back surface of the support member 10 and the wire rope 20 are needed to be tied, respectively, much time is needed for installation work, and the cost increases.
In addition, in the conventional falling rock preventing fence, since the steel net is formed of one long steel net which has the same length as the entire length of the falling rock preventing fence, when part of the steel net installed at the backside of the falling rock preventing fence is damaged due to the falling rocks or landslide, the maintenance is not easy.

DISCLOSURE OF INVENTION

Accordingly, it is an object of the present invention to overcome the problems encountered in the conventional art.
It is another object of the present invention to provide a falling rock preventing fence assembled with a steel net in which support members installed on the ground at regular intervals are formed in a pipe shape having a rectangular groove at its back surface, and a steel net installed at a back surface of the support member is formed in a rectangular plate shape, and both ends of the rectangular plate shape steel end are inserted into the rectangular groove, and the upper and lower ends of the steel net, which is stacked up and down between the support members, are connected using a connection member such as a bolt, etc., so that the strength of the support member is enhanced, and the work for installing the steel net at the support member is easy and simple. When the steel net is damaged by falling rocks or landslide, since it is possible to maintain only the damaged steel net, the maintenance is easy, and the cost decreases.
To achieve the above objects, in a falling rock preventing fence which includes a plurality of support members vertically installed on the ground at regular intervals, a plurality of wire ropes which horizontally pass through the support members, a plurality of wire rope fixtures which are fixedly installed at the support members provided at both ends for thereby fixing the both ends of the wire rope, and a steel net installed at a back surface of the support member, a falling rock preventing fence assembled with a steel net characterized in that the support member is formed in such a manner that a rectangular groove is formed over the entire length of the back surface of the body formed in a pipe shape, and a rope through hole passes through the outer surface of the body and the lateral side of the both sides of the rectangular groove; the steel net is formed in such a manner that a groove insertion portion inserted into the rectangular groove of the support member is formed at both sides of the steel net body formed in a rectangular plate shape so that it is inserted between the neighboring support members, and an upper and lower connection portion is formed at the upper and lower portions of the steel net body for engaging the upper and lower portions of the steel net stacked between the support members; and the wire rope horizontally passes through the rope through hole formed at the support member; and two groove insertion portions installed near the lateral sides and meeting with each other are inserted into the rectangular groove of the support member, and a cover member is installed at the rear side of two groove insertion portions inserted together with the rectangular groove for supporting the lateral ends of the steel net, and the support member and the steel net are fixed using a fixing bolt or a U bolt.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention will become better understood with reference to the accompanying drawings which are given only by way of illustration and thus are not limitative of the present invention, wherein;

FIG. 1 is a perspective view illustrating a conventional falling rock preventing fence;

FIG. 2 is a back view illustrating a falling rock prevention apparatus according to the present invention;

FIG. 3 is a plane cross sectional view of FIG. 2;

FIG. 4 is a plane cross sectional view of a support member according to the present invention;

FIG. 5 is a perspective view illustrating a steel net according to a first embodiment of the present invention;

FIG. 6 is a perspective view illustrating a steel net according to a second embodiment of the present invention;

FIG. 7 is a perspective view illustrating a steel net according to a third embodiment of the present invention;

FIG. 8 is a partial plane cross sectional view illustrating a state that a steel net according to a first embodiment of the present invention is installed;

FIG. 9 is a partial plane cross sectional view illustrating a state that a steel net according to a second embodiment of the present invention is installed;

FIG. 10 is a partial plane cross sectional view illustrating a state that a steel net according to a third embodiment of the present invention is installed;

FIG. 11 is a view illustrating a state that a steel net according to a third embodiment of the present invention is connected at upper and lower sides;

FIGS. 12( a) through 12(c) are views of other embodiments of the present invention in which the ends of steel net bodies are fixed at a frame according to the present invention; and

FIG. 13 is a perspective view of another example of a support mounting member in which a support member is installed according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be described in detail with reference to FIGS. 2 through 13.
As shown in FIGS. 2 and 3, the falling rock preventing fence assembled with a steel net according to the present invention comprises a plurality of support members 10 which are vertically installed on the ground at regular intervals, a plurality of wire ropes 290 which horizontally pass through the support members 10, a plurality of wire rope fixtures 21 which are fixedly installed at the support member 10 provided at both ends for thereby fixing the both ends of the wire ropes 20, and a steel net 30 which is installed between the support members 10.
As shown in FIG. 4, in the support member 10, a rectangular groove 12 is formed over the entire portions of the back surface of the body 11 formed in the pipe shape, and a rope through hole 15 is horizontally formed at the outer surface of the body 11 and the lateral side 14 of the both sides of the rectangular groove 12, with the wire rope 20 passing through the rope through hole 15. Here, the rectangular groove 12 is called as it is because the drawing shows a rectangular shape. It may be formed in a U shape or a diamond shape.
As shown in FIGS. 2 and 5 through 7, in the steel net 30, the steel net body 31 is formed in a rectangular plate shape so that it is inserted between the neighboring support members 10. A groove insertion portion 32 is formed at both sides of the rectangular plate shaped steel net body 31 and is inserted into the rectangular groove 12 of the support member 10. An upper and lower connection portion 35 is formed at the upper and lower sides of the steel net body 31 for engaging the upper and lower portions of the steel net 30 stacked between the support members 10.
The wire rope 20 horizontally passes through the rope through hole 15 formed at the support member 10, and two neighboring groove insertion portions 32 are inserted into the rectangular groove 12 of the support member 10, and a cover member 1 supporting the lateral end of the steel net 30 is installed at the rear side of two groove insertion portions 32 inserted into the rectangular groove 12 and is fixed with the support member 10 using the fixing bolt 2 or the U bolt 4.
As shown in FIGS. 5 through 7, the steel net 30 may be implemented based on the first, second and third embodiments. First, the first embodiment will be described with reference to FIGS. 5 through 8.
As shown in FIGS. 5 through 8, in the steel net 30 according to the first embodiment of the present invention, the groove insertion portion 32 formed at both sides of the steel net 30 is bent at both sides of the rectangular frame 37 in which the steel net body 31 is fixed, and a cut portion 33 and a bolt insertion hole 34 are formed at the rectangular frame 37, with the wire rope 20 passing through the cut portion, and with the fixing bolt 2 passing through the bolt insertion hole 34. Upper and lower connection portions 35 are formed at the upper and lower ends of the rectangular frame 37 and are horizontally bent. An engaging hole 36 is formed at the upper and lower connection portions 35 formed of a horizontal steel plate and is engaged using a screw or rivet, with the steel net being stacked up and down.
An angular pipe 3 is inserted between two groove insertion portions 32 together with the rectangular groove 12. In a state that two groove insertion portions 32 are fixed in the interior of the rectangular groove 12, and the cover member 1 is installed at the rear side of two groove insertion portions 32 inserted together with the rectangular groove 12 and supports the lateral ends of the steel net, the fixing bolt 2 is inserted from the front side of the support member 10 and passes through the bolt insertion hole 34 of the groove insertion portion 32, the angular pipe 3 and the cover member 1, with the groove insertion portion 32 being inserted into the groove lower portion 13 and the rectangular groove 12.
The second embodiment of the present invention will be described with reference to FIGS. 6 and 9. In the steel net of this embodiment, the groove insertion portion 32 formed at both sides of the steel net 30 is bent at both sides of the rectangular frame 37 in which the steel net body 31 is fixed. It is formed in a channel shape in such a manner that the bent width of the groove insertion portion 32 becomes half of the width of the rectangular groove 12. A cut portion 33 is formed at the groove insertion portion 32, with the wire rope passing through the cut portion 33. A horizontal steel plate is horizontally bent at the upper and lower ends of the rectangular frame 37 for thereby forming the upper and lower connection portion 35. An engaging hole 36 is formed at the upper and lower connection portion 35 formed of a horizontal steel plate for thereby engaging the steel net 30 using a screw, rivet or wire.
In addition, the U-bolt 4 is inserted from the rear side, while surrounding from the front side of the support member 10, in a state that the cover member 1 supporting the lateral end portion of the steel net 30 is installed at the rear side of two groove insertion portions 32 inserted together with the rectangular groove 12, and both ends of the U bolt 4 pass through the cover member 1 and are fixed using nuts.
In the steel net 30 according to the second embodiment of the present invention, the steel net 30 stacked up and down between the support member 10 is engaged in such a manner that a screw, rivet or wire is inserted into the engaging hole 36 of the contacting upper and lower connection portions 35.
According to the third embodiment of the present invention as shown in FIGS. 7 and 10, in the steel net body 31, a plurality of vertical and horizontal wires 31 a and 31 b are engaged in a rectangular net shape, and a right angle shaped upper and lower connection portion 35 is formed at the upper and lower ends of the vertical wire 31 a, and the vertically stacked upper and lower connection portions 35 are engaged using the clip 38. The horizontal wire 31 b is extruded from both ends of the steel net body 31, and the groove insertion portion 32 is engaged at the protruded end portion, and a cut portion 33 is formed at the groove insertion portion 32, with the wire rope 20 passing through the cut portion 33.
An angular pipe 3 is inserted between two groove insertion portions 3 inserted together with the rectangular groove 12, and two groove insertion portions 32 are not movable in the interior of the rectangular groove 12. In the above state, the U bolt 4 is inserted from the rear side while surrounding from the front side of the support member 10 in a state that the cover member 1 supporting the lateral end of the steel net 30 is installed at the rear sides of two groove insertion portions 32 inserted together with the rectangular groove 12, so that the both ends of the U bolt pass through the cover member 1 and are fixed by the nut.
According to the first, second and third embodiments of the present invention, the cut portion 33 is formed at the steel net 30, with the wire rope 20 horizontally passing through the cut portion 33. As shown in FIGS. 8 through 10, in the support member 10, the wire rope 20 horizontally passes through the rope through hole 15 formed at the both lateral sides 14 of the body 11 and the rectangular groove 12. When the wire rope 20 is inserted into the rope through hole 15, it is preferred to install the rope cover 5 for preventing the wire rope 20 from being cut when contacting with the end of the rope through hole 15.
According to the steel net of the first embodiment of FIG. 5 and the steel net according to the third embodiment of FIG. 7, the groove insertion potion 32 may be formed in an angle shape which may be shown by removing the imaginary line in the drawings. When the groove insertion portion 32 is made of angular members, the manufacture cost decreases.
FIGS. 12 a, 12 b and 12 c are views when the groove insertion portion 32 is installed at both sides of the steel net body 31, of which FIG. 12 a is a view illustrating a construction that the end of the steel net body 31 is welded at the rectangular frame 37, with the welded portion being indicated by “w”, and FIG. 12 b is a view illustrating a construction that the press plate 39 is covered and fixed using a screw or a rivet in a state that both ends of the steel net body 31 is positioned at the rectangular frame 37, and FIG. 12 c is a view illustrating a construction that the both ends of the steel net body 31 are bent in step shapes in the steel plates and are inserted into the same, and the engaged portion is fixed using a rivet or a screw.
FIG. 13 is a view of another example of the support mounting member 16 which fixes the lower end of the support member 10. The outer support pipe 17 and the inner fixture 18, which form a rectangular groove like the support member 10 are installed at the upper side of the base plate 20 fixed at the concrete portion using an anchor bolt, and the lower end of the support member 10 is inserted into the insertion portion between the outer support pipe 17 and the inner fixture 18, and the support mounting member 16 and the support member 10 inserted thereinto are fixed using a bolt.
The operations of the present invention will be described with reference to FIGS. 2 and 13.
As shown in 2 through 13, when the steel net of the present invention is installed, a plurality of support members 10 are vertically installed on the ground at regular intervals. When the support members 10 are installed on the ground, the rectangular groove 12 is oriented in the rear direction, so that the back side in which the steel net 30 is installed is hidden, whereby the front side of the same looks nice.
After a plurality of support members 10 are vertically installed on the ground at regular intervals, the wire rope 20 passes through the rope through holes 15 horizontally formed at the neighboring support members 10, and the wire rope fixture 21 is connected with the end of the wire rope 20 passing through the support member 10 installed at both ends. The bolt is provided to the wire rope fixtures 21, so that the wire rope 20 can be loosened or tightened by tightening or loosening the bolt. At the initial work stage, it is needed to make the wire rope 20 loosened, and after all steel nets are installed, it is needed to make the wire rope 20 tightened by tightening the bolt of the wire rope fixture 21.
Two steel nets 30 are inserted into the rectangular 12 formed at the support member 10, and the cover member 1 contacts with the rear surface of the steel net 30 inserted into the rectangular groove 12 together with two groove insertion portions 32, and the steel net 30 is fixed at the support member 10 by engaging the fixing bolt 2 or the U bolt 4, and the upper and lower connection portion 35 formed at the upper and lower portions of the steel net 30 are fixedly engaged using a bolt, a rivet or a wire, so that the installation work of the present invention is finished.
When the steel net according to the present invention is installed, as shown in FIGS. 5, 6 and 7, the steel net 30 of the present invention may be implemented based on the first, second and third embodiments. The installation method is slightly different from each other. The installation state of each embodiment will be described with reference to a corresponding drawing.
When the steel net 30 of the first embodiment of FIG. 5 is installed, as shown in FIG. 8, the wire rope 20 is horizontally inserted into the rope through hole 15 horizontally passing through the support member 10. The rope through hole 15 is formed at both inner sides of the body 11 and the rectangular groove 12 and at the lateral side 14. When the rope through hole 15 formed at the lateral portion 14 comes closer, and then the wire rope 20 passes through the rope through hole 15, since the wire rope 20 is supported by the flat groove portion 13, so that when rocks or steel net 30 fall down, the supporting force of the wire rope 20 is enhanced.
The groove insertion portion 32 bent at the steel net 30 is inserted into the rectangular groove 12 of the support member 10. The groove insertion portion 32 of the steel net 30 inserted into the rectangular groove 12 is engaged together with two groove insertion portions 32 positioned at both ends of two steel nets 30 which are neighbor in the lateral direction.
The groove insertion portion 32 inserted into the rectangular groove 12 is provided with the cut portion 33, so that it is inserted like surrounding the previously installed wire rope 20. The cut portion 33 is thinner than the width or thickness of the rectangular groove 12, so that a surplus space is formed between two groove insertion portions 32. When the angular pipe 3 is inserted into the above space, the thickness that two groove insertion portions 32 and the angular pipe 3 are summed is matched with the width of the rectangular groove 12, so that both ends of the steel net 30 are not movable in the rectangular groove 12.
In this state, the fixing bolt 2 is inserted from the front center portion of the support member 10 and passes through the bolt insertion hole 34 of the groove insertion portion 32 inserted into the groove bottom portion 13 and the rectangular groove 12 of the rectangular groove 12, and the angular pipe 3 and the cover member 1 and is engaged with the backwardly protruded screw portion and is fixing using the nut, so that the steel net 30 is fixed at the support member 10. Continuously, the steel net 30 is inserted between the neighboring support members 10 in the same manner, so that a plurality of steel nets 30 are stacked in a vertical direction, which are formed in the rectangular plate shape as high as the height of the support member 10.
The upper and lower connection portion 35 is formed at the upper and lower ends of the stacked steel nets 30, so that the upper and lower connection portion 35 is stacked in the vertical direction. The upper and lower connection portions 35 are stably connected in such a manner that a bolt, a rivet or a wire is inserted into the engaging hole 36 of the stacked upper and lower connection portions 35. In this construction, when land slides or rocks fall or the steel net 30 is broken and falls down, since the upper and lower connection portions 35 are fixedly connected by the rivet, bolt or wire, the upper and lower steel nets are not widened, and landslide or falling rocks do not penetrate in the forward direction of the steel net 30.
The installation of the steel net according to the second embodiment of FIG. 6 will be described. It is nearly same as the installation of the first embodiment of FIG. 9, but in the second embodiment, the width of the groove insertion portion 32 is half of the width of the rectangular groove 12. So, when two groove insertion portions 32 are inserted into the rectangular groove 12, it is tightly inserted therein without any movement. In this embodiment, it is not needed to insert the angular pipe 3 which is provided in the first embodiment.
As two groove insertion portions 32 are tightly inserted into the rectangular groove 12, the U bolt 4 is inserted from the front side of the support member 10 and passes through the steel net 30, and the cover member 1 having the bolt insertion hole at both sides is contacted at the rear surface of the steel net 30, and the screw portion of the U bolt 4 passes through the bolt insertion hole of the cover member 1 and is engaged using the nut, so that the steel net is installed at the support member 10.
Since the construction that the upper and lower connection portion 35 of the steel nets 30 inserted and stacked between the support members 10 is fixed using a bolt, a rivet or a wire is the same as the first embodiment, the detailed description of the same will be omitted.
FIG. 7 is a view of a construction that the steel net according to the third embodiment of the present invention is installed at the support member 10. As shown in FIGS. 10 and 11, in the first embodiment, the constructions that the wire rope 20 is installed at the support member 10, and two groove insertion portions 32 are inserted into the rectangular groove 12, and the angular pipe 3 is inserted between two groove insertion portions 32 inserted into the rectangular groove 12 are the same as the first embodiment of the present invention.
After the angular pipe 3 is inserted, the cover member 1 is contacted with the rear end of the steel net 30 inserted into the rectangular groove 12 together with two groove insertion portions 32, and the U bolt 4 is installed in the second embodiment. In the same manner, the U bolt 4 is inserted from the front side of the support member 10, and the screw portion of the U bolt 4 passes through the bolt insertion holes of the steel net 30 and the cover member 1 and is engaged using the nut, so that the both sides of the steel net 30 are fixed at the support member 10.
FIGS. 8 through 10 show that the rope cover 5 is installed at the portion in which the wire rope 20 passes through the rope through hole 15 of the support member 10. The wire rope 20 contacts with the end of the rope through hole 15 of the support member 10 made of metal. With the above structure, it is possible to prevent the disconnection of the same.
As shown in FIGS. 5 and 7, in the steel net 30, the end of the groove insertion portion 32 is shown by an imaginary line. When the imaginary line is deleted, the rectangular frame 37 and the groove insertion portion 32 are formed in an angle shapes, so that with the above method, it is possible to use the angles which are commercially available in the market. In the case that the imaginary line portion is included, the horizontal portion is further connected at the angled portion in a step shape, so that it is needed to separately fabricate based on the press process, whereby the manufacturing cost increases.
FIG. 13 is a view illustrating the support mounting portion 16 for installing the lower end of the support member 10. In this case, the base plate 19 of the support mounting portion 16 is installed on the ground using the anchor bolt, and the lower end of the support member 10 is inserted into the insertion portion doubly formed at the support mounting portion 16, and then the bolt is laterally installed, so that the installation of the support member 10 is finished.

INDUSTRIAL APPLICABILITY

As described above, in a falling rock preventing fence assembled with a steel net, a plurality of support members are provided in a pipe shape having a rectangular grooves in upper and lower longitudinal directions, with the support member being installed on the ground at regular intervals, and both ends of the steel net formed in a rectangular plate shape are inserted into the rectangular grooves of the neighboring support member and are fixed using a fixture such as a bolt, etc., and the upper and lower portions of the steel nets stacked in the upper and lower direction are connected with a connection member such as a bolt, etc., and the strength of the steel net is enhanced by the rectangular grooves longitudinally formed in the support member and the end of the steel net inserted in the rectangular groove, so that the work for installing steel nets between the support members is easy and simply. Even when a steel net is damaged by falling rocks or landslide, it is needed to repair only the damaged portions, so that a maintenance is easy, and a cost for the repair decreases.
As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described examples are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. In a falling rock preventing fence which includes a plurality of support members 10 vertically installed on the ground at regular intervals, a plurality of wire ropes 20 which horizontally pass through the support members 10, a plurality of wire rope fixtures 21 which are fixedly installed at the support members 10 provided at both ends for thereby fixing the both ends of the wire rope 20, and a steel net 30 installed at a back surface of the support member, a falling rock preventing fence assembled with a steel net characterized in that the support member 10 is formed in such a manner that a rectangular groove 12 is formed over the entire length of the back surface of the body 11 formed in a pipe shape, and a rope through hole 15 passes through the outer surface of the body 11 and the lateral side of the both sides of the rectangular groove 12; the steel net 30 is formed in such a manner that a groove insertion portion 32 inserted into the rectangular groove 12 of the support member 10 is formed at both sides of the steel net body 31 formed in a rectangular plate shape so that it is inserted between the neighboring support members 10, and an upper and lower connection portion 35 is formed at the upper and lower portions of the steel net body 31 for engaging the upper and lower portions of the steel net 30 stacked between the support members 10; and the wire rope 20 horizontally passes through the rope through hole 15 formed at the support member 10; and two groove insertion portions 32 installed near the lateral sides and meeting with each other are inserted into the rectangular groove 12 of the support member 10, and a cover member 1 is installed at the rear side of two groove insertion portions 32 inserted together with the rectangular groove 12 for supporting the lateral ends of the steel net 30, and the support member 10 and the steel net 30 are fixed using a fixing bolt 2 or a U bolt.

2. The wall of claim 1, wherein said groove insertion portion 32 is bent at both sides of the rectangular frame 37 in which the steel net body 37 is fixed, and the cut portion 33 through which the wire rope 20 passes and the bolt insertion hole 34 through which the fixing bolt 2 passes are formed at the groove insertion portion 32, and the upper and lower connection portion 35 is formed at the upper and lower ends of the rectangular frame 37 in which the horizontal steel plate is horizontally bent, and an engaging hole 36 is formed at the horizontal steel plate and is engaged using a screw or a rivet; and an angular pipe 3 is inserted between two groove insertion portions 32 inserted together with the rectangular groove 12.

3. The wall of claim 1, wherein said groove insertion portion 32 is bent at both sides of the rectangular frame 37 in which the steel net body 31 is fixed, and the bent width portion of the groove insertion portion 32 is bent in a channel shape as wide as the half of the width of the rectangular groove 12, and a cut portion 33 is formed at the groove insertion portion 32 with the wire rope 20 passing through the cut portion 33, and the upper and lower connection portion 35 is formed at the upper and lower ends of the rectangular frame 37 so that the horizontal steel plate is horizontally bent, and an engaging hole 36 is engaged at the horizontal steel plate using a screw or a rivet.

4. The wall of claim 1, wherein said steel net body 31 is engaged in a rectangular net shape in which a plurality of vertical and horizontal wires 31 a and 31 b are engaged, and an upper and lower connection portion 35 is formed at the upper and lower ends of the vertical wire 31 a in a right triangle shape, and the upper and lower connection portions 35 contacting with each other are engaged using a clip 38, and the horizontal wire 31 b is protruded from both ends of the steel net body 31, and the groove insertion portion 32 is engaged at the protruded ends, and a cut portion 33 is formed at the groove insertion portion 32 with the wire rope 20 passing through the cut portion, and an angular pipe 3 is inserted between two groove insertion portions 32 inserted together with the rectangular groove 12.