KR20030044571A - Rock bolt linking reinforcement equipment - Google Patents

Abstract

PURPOSE: A lock bolt/nail linking and fixing device for the anti-breaking of bedrock is provided to fix a lock bolt/nail stably and to prevent the breaking of an inclined ground between a lock bolt/nail and a lock bolt/nail. CONSTITUTION: The lock bolt/nail linking and fixing device for the anti-breaking of bedrock contains: a retentive plate(30) adhered to an inclined ground and provided with a perforation hole to fit the end of a lock bolt/nail(20), a preventive projection(34) projected upward to form a crossed guide on each corner, a grouting hole(37) and an air vent hole(39) formed around the perforation hole, and a cylindrical preventor(33) formed downward; a pressure member(40) provided with a perforation hole for placing the lock bolt/nail(20) to press a reinforcing bar anchored on the guide; and a nut(24) coupled with the end of the lock bolt/nail(20) to adhere/fix the retentive plate(30) and the pressure member(40).

Description

Rock bolt (nail) linkage fixing device to prevent rock collapse {ROCK BOLT LINKING REINFORCEMENT EQUIPMENT}

The present invention relates to a rock bolt (nail) linkage fixing device for preventing rock collapse, and more particularly, to fix the rock wall, rock, earth and sand forming the inclined surface adjacent to the road to be collapsed due to various impacts and weathering action, etc. In rock bolts (nail) to be installed, these rock bolts (nail) are connected to each other so that even if one of the lock bolt (nail) installation parts collapses, it is supported by a neighboring rock bolt (nail) to minimize the risk of collapse. At the same time, the present invention relates to a rock bolt (nail) linkage reinforcement device for preventing rock collapse (nail) to hold a portion to be separated between the rock bolt (nail) and the rock bolt (nail) as reinforcing bars or nets.

In general, there are many sloped roads including rock walls, rocks, earth and sand, and the like, which are open to mountainous terrain, and these roads are exposed to slope collapse from sloped roads.

This slope collapse is a phenomenon that collapses as the support base weakens due to wind and gravitational action, including various impacts and thawing by the earthquake or vehicles traveling on the road.

Therefore, in order to minimize the risk of the collapse of the slope to form a slope at a predetermined angle, and in addition to the situation that the slope stability work of various forms are carried out to prevent the falling rock and soil from the slope from the slope.

Slope stabilization work to prevent such slope collapse phenomenon, the formation of a large number of insertion holes at a depth of about 3 to 5m or more at a predetermined interval on the site of the risk of collapse on the slope, such as rock, such as slopes, A lock bolt (nail) having a certain length is inserted into the insertion hole to fill and fix mortar or the like.

The end of the fixed lock bolt (nail) is formed to protrude from the surface of the inclined surface, the end of the protruding rock bolt (nail) is positioned through the radial support plate having a constant thickness and rigidity, Then, as the nut coupled to the lock bolt (nail) is fastened to the support plate is in close contact with the surface of the inclined surface and at the same time to support the surface of the inclined surface corresponding to the fastening force of the lock bolt (nail) and the nut.

However, when the collapse of a specific part on the inclined surface is intensified, the load due to the collapse is concentrated in the rock bolt (nail) reinforcement portion of the site, and the rock bolt (nail) reinforcement portion in which the collapse load is concentrated is deformed by the load. Or there is a problem that the risk of safety accidents remain, such as broken and lost support capacity for subsequent collapse, such as rock collapse.

Accordingly, the ends of each lock bolt (nail) are provided by connecting wires or ropes to complement each other, and a mesh is provided between each wire or rope to prevent falling rocks and sediment. There is a situation.

On the other hand, the applicant of the present invention prevents the mortar filled into the inclined surface when the rock bolt (nail) is installed on the inclined surface consisting of rock walls, rocks, etc., and also prevents the outflow of the mortar filled into the inclined ground (lock bolt by high pressure grouting ( He has previously filed a lock bolt (nail) installation device and installation method (2001 Patent Application No. 17462) to increase the rigidity by increasing the frictional force of the nail.

The lock bolt (nail) installation device, as shown in Figure 1, is fixed to the front end side of the plurality of insertion holes 11 formed on the inclined surface 10 is in close contact with the inner peripheral surface of the insertion hole (11) The grouting hole 22 is formed on one side, and a through hole 18 for inserting the lock bolt (nail) 20 in the center is formed, and the through hole 24 is formed on one side of the through hole 18. ) Is formed in the upper plate member 16, the hollow cylindrical portion 26 formed of a size having an outer circumference smaller than the outer circumference of the upper plate member 16 by a predetermined length, and the other end of the cylindrical portion 26 It is fixedly installed and made of the same shape as the top plate member 16, but has a through hole for inserting the lock bolt (nail) 20 is formed and the through hole 24 of the top plate member 16 to one side of the through hole. A packer 14 including a lower plate member 28 having a corresponding through hole formed therein; The injection hose 30 is inserted into the through hole 24 of the upper and lower plate members 16 and 28 of the packer 14 and used as a passage for injecting mortar into the lower side of the packer 14. It is characterized by.

However, the rock bolt (nail) installation device having the above structure is not configured in connection with the neighboring rock bolts (nails), so that if a certain portion of the lock bolts (nails) are collapsed, the neighboring locks There was a problem that the bolt (nail) installation site is connected and collapsed, and there was also a risk of falling between the rock bolt (nail) and the rock bolt (nail).

Accordingly, the present invention has been devised to solve the above problems, in the lock bolts (nail) that is fixed to prevent the collapse of the inclined surface adjacent to the road, the mortar filled inside flows out to the outside By connecting the lock bolts (nail) which are installed so as not to be connected to each other, even if any one of the lock bolt (nail) installation parts collapses, it is supported by the neighboring lock bolt (nail) to minimize the risk of collapse and the lock bolt (nail) It is an object of the present invention to provide a rock bolt (nail) linkage reinforcement device for preventing rock collapse that prevents falling between the rock bolt and the nail.

In addition, by preventing the separation of the reinforcing bars or wires, such as to install a more stable reinforcing bar or wire connecting the lock bolts (nail), to prevent rock collapse to improve the reinforcement of the connection of the rock bolts (nail) The purpose is to provide a lock bolt (nail) linkage reinforcement device.

1 is a view schematically showing a conventional rock bolt (nail) installation relationship.

Figure 2 is an exploded perspective view of the rock bolt (nail) linkage reinforcement for preventing rock collapse according to the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

Figure 4 is a plan view showing the installation relationship of the rock bolt (nail) linkage reinforcement for preventing rock collapse according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: sloped surface 20: rock bolt (nail)

23: rebar 24: nut

30: support plate 31: through hole

32: guide 34: prevention jaw

36: groove 40: pressing member

42: through hole 44: jamming jaw

50: cover 52: fixed jaw

Rock bolt (nail) linkage reinforcement device for preventing rock collapse of the present invention for achieving the above object, the insertion hole is formed on the inclined surface of the road side made of rock walls or rock, and fixed to the insertion hole rock bolt (nail) A device for fixing the rock bolts (nails) installed at a predetermined interval to prevent the rock wall or rock from being collapsed by an external impact, such that the rock wall or the rock mass is in close contact with the inclined surface, and the end of the rock bolts (nail). A through hole is formed to be fitted to the side, and a stopper for forming a cross guide at each corner portion is formed to protrude upward, and a grouting hole and an air discharge hole are formed at the periphery of the through hole, and a protector is provided at the bottom side. An integrally formed support plate; A pressing member for forming a through hole for penetrating the rock bolt (nail) and pressing the rebar seated on the guide; And a nut coupled to an end side of the lock bolt (nail) so that the support plate and the pressing member are in close contact with and fixed to each other.

In addition, the cross-shaped guide formed by the prevention jaw of the support plate is seated crosswise is characterized in that the groove is formed side by side in one direction.

In addition, a portion in which the through-hole is formed in the pressing member is characterized in that the convex shape.

On the other hand, the upper side of the pressing member is characterized in that the cover of the object is configured to protect the engaging portion of the lock bolt (nail) and the nut.

In addition, a locking jaw is formed at the periphery of the through-hole of the pressing member, and a locking jaw is provided at the inner periphery of the cover, so that the cover is pressed against the pressing member by the interference fit of the locking jaw and the fixing jaw. Characterized in that it is fixed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view of the rock-bolt prevention lock bolt (nail) linkage reinforcement device according to the present invention, Figure 3 is a cross-sectional view AA line of Figure 2, Figure 4 is rock-bolt prevention lock bolt (nail) according to the present invention It is a top view which shows the installation relationship of the linkage reinforcement apparatus.

In describing the present invention, the same parts as in the prior art will be described with the same reference numerals, and repeated description thereof will be omitted.

As shown, it is seated in the upper side of the insertion hole 11 of the inclined surface 10 is in close contact with the inclined surface 10, through-hole 31 for fitting the end side of the lock bolt (nail) 20 It is formed, the support plate 30 is provided with protruding projections 34 for forming a cross-shaped guide 32 in each corner of the upper surface side.

The bottom side of the support plate 30 is formed integrally with the cylindrical prevention hole 33, the outer diameter is made the same size as the inner diameter of the insertion hole (11).

The grouting hole 37 and the air discharge hole 39 are formed in the support plate 30 in a vertical line, respectively, and an injection hose H is inserted into the grouting hole 37.

On the other hand, in the support plate 30, the grooves 36 are formed side by side in one direction in the guide 32 formed crosswise by the stopper 34.

On the other hand, the lock bolt (nail) 20 is provided with a pressing member 40 formed with a through-hole 42 for penetrating through the object, the portion formed with the through-hole 42 is in the shape of a plate upward convex shape. Consists of, the locking projection 44 is formed on the periphery of the convex portion in which the through-hole 42 is formed in the pressing member 40 is formed.

In addition, the cover 50 of the solid shape formed with a fixing jaw 52 on the inner circumference to correspond to the locking jaw 44 of the pressing member 40 is also provided as an object.

Referring to the installation relationship of the interlocking fixing device of the rock bolt (nail) for preventing rock collapse having such a structure as follows.

First, the prevention hole 33 formed integrally with the support plate 30 is inserted into the front end side of the insertion hole 11 formed on the inclined surface 10 formed of the rock wall or the rock, and then the through hole of the support plate 30 31) mortar is injected through the grating hole 37 in a state where the lock bolt (nail) 20 is inserted at a predetermined depth.

At this time, the outer diameter of the prevention device 33 is inserted into the insertion hole 11, by smoothing the surface protruding to the inner surface of the insertion hole while eliminating the gap, thereby preventing the flow of mortar filled into the inside. And, the bottom surface of the support plate 30 is to be seated parallel to the insertion hole 11 front end side.

In addition, when the mortar is injected through the grouting hole 37, the air existing in the insertion hole is discharged through the air discharge hole 39 formed at a position opposite to the grouting hole 37.

Therefore, the fixed installation of the lock bolt (nail) 20 is made without the leakage of mortar filled into the insertion hole (11).

Then, after the reinforcing bar 23 is seated in the groove 36 formed in one direction in the support plate 30, the other reinforcing bars are seated to cross. At this time, the reinforcing bar 23 seated in the groove 36 is seated in a buried position from the upper surface of the support plate 30, the rebar is seated in contact with the upper surface of the support plate 30 is crossed Will be done.

In this manner, the bottom surface of the pressing member 40 is inserted into the reinforcing bar 23 by inserting the through-hole 42 of the pressing member 40 into the end side of the lock bolt (nail) 20 in the state where the reinforcing bar 23 is seated. After being in close contact with each other, as shown in FIG. 4, when the lock bolt (nail) 20 is tightened with the nut 24, the rebar 20 is disposed between the bottom surface of the pressing member 40 and the upper surface of the support plate 30. It is fixed in the intervening state.

In this case, the portion in which the through hole 42 is formed in the pressing member 40 is formed in a convex shape, and the pressing force is further applied to the circumferential portion according to the fastening of the nut 24 to the portion to fix the reinforcing bar 23. This becomes even stronger.

Finally, the solid cover 50 is inserted into the upper side of the pressing member 40 to be fixed, and fixed to the locking jaw 44 of the pressing member 40 over the inner circumference of the cover 50. What is necessary is just to fix the jaw 52 by interference fit.

As described above, according to the rock bolt (nail) linkage fixing device for preventing rock collapse of the present invention, it is possible to fix the lock bolt (nail) installed in order to prevent the collapse of the inclined surface without the leakage of mortar, Lock bolts (nail) are fixed to each other in order to secure more secure bearing capacity by intersecting the rebars and wires intersecting with each other fixedly fixed position, so that the rebars and wires are separated by loosening of the nut, etc. There is a useful effect that the worry is removed and the lock bolt (nail) is more stably fixed, and the slope of the rock bolt (nail) and the lock bolt (nail) is prevented from falling down.

Although the invention has been described in detail only with respect to the specific examples described, it will be apparent to those skilled in the art that various modifications and variations are possible within the spirit of the invention, and such modifications and variations belong to the appended claims.

Claims (5)

An insertion hole 11 is formed in the roadside inclined surface 10 formed of a rock wall or a rock, and a lock bolt (nail) 20 is fixedly installed on the insertion hole 11 so that the rock wall or the rock is subjected to an external impact or the like. In the device for fixing the lock bolts (nail) installed at regular intervals to prevent collapse by In close contact with the inclined surface 10, a through hole 31 for fitting the end side of the lock bolt (nail) 20 is formed, and a stopper for forming a cross-shaped guide 32 in each corner portion, respectively. A support plate 34 is formed to protrude upward, and a grouting hole 37 and an air discharge hole 39 are formed at the periphery of the through hole 31, and a cylindrical prevention hole 33 is integrally formed at the bottom side thereof. 30); A press member 40 for forming a through hole 42 through which the lock bolt 20 is formed, and pressing the rebar 20 seated on the guide 32; Rock bolt for preventing rock collapse characterized in that it comprises a; (24) is coupled to the end side of the lock bolt (nail) 20 to the support plate 30 and the pressing member 40 to be in close contact and fixed; (Nail) linkage. The method of claim 1, The cross-shaped guide 32 formed by the stopper 34 of the support plate 30 to which the reinforcing bars 20 and the like are seated crosswise has rock recesses for preventing rock collapse, characterized in that grooves 36 are formed side by side in one direction. Nail) linkage fixture. The method of claim 1, The rock bolt (nail) linkage fixing device for preventing rock collapse (nail), characterized in that the pressing member 40 is formed in a convex shape formed in the through hole 42. The method of claim 1, The upper side of the pressing member 40 is covered with the cover 50 of the object, rock bolt (nail) 20 and the rock bolt for preventing rock collapse (nail), characterized in that configured to protect the coupling portion of the nut 24 Fixture. The method according to claim 1 or 4, A locking jaw 44 protrudes from a periphery of the through-hole 42 of the pressing member 40, and a fixing jaw 52 is provided at an inner periphery of the cover 50 corresponding to the locking jaw 44. Rock bolt (nail) linkage fixing device characterized in that the cover 50 is fixed to the pressing member 40 by the interference fitting of the fixing jaw (52).