KR101922175B1 - Rock cutting apparatus, rock cutting method, and excavation method using the same - Google Patents

Abstract

The present invention relates to a rock cutter, a cutting method, and a drilling method using the same, and more particularly, to a rock cutter and a cutting method using a multi-wire saw capable of simultaneously forming a plurality of cuts on a rock wall by using a plurality of wire saws The present invention relates to an excavation method.

Description

Technical Field [0001] The present invention relates to a rock cutter and a cutting method using a multi-wire saw,

The present invention relates to a rock cutter, a cutting method, and a drilling method using the same, and more particularly, to a rock cutter and a cutting method using a multi-wire saw for cutting a rock wall using a plurality of wire saws and a drilling method using the same.

Generally, tunnels are excavated to construct roads, railways or urban subways that penetrate mountainous areas. Mountainous areas and urban subterranean spaces usually have a geological structure composed of various types of rocks.

As described above, excavation by blasting when excavating a tunnel is widely used because of its low cost and fast excavation speed compared with mechanical excavation.

However, since tunnel excavation by blasting mostly uses gunpowder, noise and vibration caused by blasting can cause unexpected damage to the surrounding environment where the tunnel is excavated.

Therefore, in order to increase the efficiency of blasting, it is necessary to increase the excavation field per blasting, but it is necessary to reduce blasting damage such as ground vibration, noise, storm pressure and dust generation by blasting.

In order to solve this problem, a tunnel blasting method is used in which the core is removed from the deep portion of the tunnel.

In recent years, as disclosed in Korean Patent Laid-Open Nos. 10-2015-0139232 and 10-1508205, there has been proposed a method of using a wire saw And devices are being developed.

In addition, Japanese Patent No. 10-16934119 discloses an excavation method for reducing blast vibration.

In this prior art, a section buffer (cut part) is formed between the blasting hole and the protection object so that the blasting vibration is reduced in the buffer section, thereby reducing the transmission to the protection object.

However, as described above, there is a limit to effectively reduce the blasting vibration propagating to the object to be protected only by the empty space, that is, the buffer section.

In addition, there is a limit to reduce the blasting vibration by only one cushioning portion, that is, one cutting portion. In order to form a plurality of cutting portions between the cutting object and the object to be protected, the cutting operation must be carried out with drainage. There was a problem of.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a cutting tool for cutting a rock wall by a wire saw to reduce the transmission of blasting vibrations to a protected object The present invention has been made in view of the above problems, and it is an object of the present invention to provide a rock cutting apparatus, a cutting method, and a drilling method using the same, which can effectively reduce blasting vibrations.

According to an aspect of the present invention, there is provided a rock cutter using a multi-wire saw, comprising: a driving unit for driving a wire saw; A plurality of entry arms formed in a rod shape and inserted into mutually spaced apart entrance holes; A direction switching unit coupled to the other end of the entry arm; Wherein the wire saw moves by the operation of the driving unit and the tension of the wire saw is adjusted by the forward and backward movement of the driving unit. Wherein the entry arm comprises a first entry arm and a second entry arm disposed apart from each other, the direction switching unit comprising: a bracket coupled to the other end of the entry arm; And a first guide roller and a second guide roller which are coupled to the bracket and rotate about a central axis in a direction perpendicular to the longitudinal direction of the entry arm, A first wire saw which traverses a first guide roller of the first entry arm and a first guide roller of the second entry arm; And a second wire saw which traverses a second guide roller of the first entry arm and a second guide roller of the second entry arm, which are spaced apart from each other, between the first entry arm and the second entry arm, And the saws are spaced apart from each other.

The first guide roller and the second guide roller are rotated independently of each other.

Alternatively, the first guide roller and the second guide roller are rotated together.

The first guide roller and the second guide roller are arranged in parallel and are rotatably coupled to the bracket by the same rotation axis.

The bracket is rotatably coupled at the other end of the entry arm about the longitudinal direction of the entry arm.

A penetrating hole through which the wire saw penetrates is formed in the entrance arm and the wire saw is turned by the first guide roller or the second guide roller after passing through the through hole formed in the entrance arm .

The bracket is provided with protruding protrusions in the outward direction, and the protrusions prevent the first guide roller and the second guide roller from contacting the inner surface of the entrance hole.

Wherein the first wire saw and the second wire saw each comprise a separate closed loop, the driving unit comprising: a driving body; A first driving roller rotatably coupled to the driving body and moving the first wire saw; And a second driving roller rotatably coupled to the driving body and moving the second wire saw.

Alternatively, the first wire saw and the second wire saw are integrally connected to each other, and the wire saw is composed of one closed loop, and the driving unit includes: a driving body; And a third drive roller rotatably coupled to the driving body and moving the wire saw, wherein the wire-driven third drive roller, the first guide roller, the third drive roller, the second guide roller, 3 driving rollers.

A stopper disposed on an outer circumferential surface of the entry arm between one end and the other end of the entry arm; A moving wedge inserted between the stopper and the entry arm; And a wedge driving unit for moving the moving wedge, wherein the stopper moves away from the outer circumferential surface of the entering arm as the moving wedge is inserted between the stopper and the entering arm.

According to another aspect of the present invention, there is provided a method of cutting a rock wall using a multi-wire saw, comprising: forming a plurality of entrance holes in a rock wall; And a cutting step of cutting a rock wall between the entrance holes by using the above-described rock wall cutting device to form a cut part. In the cutting step, a plurality of wire saws mounted on the rock cutter are used And two or more cutting portions mutually spaced apart from each other between the two entrance holes are simultaneously formed.

According to another aspect of the present invention, there is provided a drilling method for reducing blasting vibration, comprising: a hole forming step of forming a plurality of entrance holes in a rock wall; A cutting step of cutting a rock wall between the entrance holes spaced apart from each other by using the above-described rock wall cutting device to form a cut part; A mat inserting step of inserting a mat into the cut part; And a blasting step of blasting the rock wall by using a gunpowder inserted into the charge hole of the rock wall. In the cutting step, a plurality of wire saws mounted on the rock wall cutting apparatus are used, Wherein at least two spaced cuts are simultaneously formed, and blasting vibrations generated in the blasting step are reduced by at least two of the cuts and the mat.

As described above, according to the rock cutting apparatus and cutting method using the multi-wire saw of the present invention and the excavation method using the same, the following effects can be obtained.

When cutting a rock wall by a wire saw to form a cutting portion for reducing the transmission of blasting vibrations to a protection object (building or the like), a plurality of cutting portions are simultaneously formed by using the first wire saw and the second wire saw The cutting operation time and the like can be shortened and the blasting vibration can be effectively reduced.

Further, by inserting a mat into the cut portion formed by the wire saw, it is possible to reduce the propagation of the blasting vibration to the object to be protected, compared to the case where only the cut portion made of the void space in the related art is used.

1 is a plan structural view of a rock cutter according to a first embodiment of the present invention;
FIG. 2 is a side view of a rock cutter according to a first embodiment of the present invention. FIG.
3 is a front structural view of a rough rock cutter according to the first embodiment of the present invention,
4 is a view illustrating a process of fixing the entrance arm of the rock cutter in the entrance hole according to the first embodiment of the present invention.
5 is a front view of a rock wall cut by the rock wall cutting apparatus according to the first embodiment of the present invention,
6 is a planar structural view of a rock cutter according to a second embodiment of the present invention,
7 is a side view of a rock cutter according to a second embodiment of the present invention.

First Embodiment

FIG. 1 is a plan structural view of a rock cutter according to a first embodiment of the present invention, FIG. 2 is a side structural view of a rock cutter according to a first embodiment of the present invention, FIG. 3 is a cross- FIG. 4 is a view illustrating a process of fixing an entry arm of a rock cutter according to a first embodiment of the present invention to an entrance hole, FIG. 5 is a cross- FIG. 2 is a front view of a rock cut by a rock cutter according to FIG.

A rock cutting apparatus using a multi-wire saw according to the present invention includes a cutting body 10, a drive unit 20, an arm 30, a direction switching unit 40, and a wire saw 50 .

The cutting body 10 is connected to an excavator, a moving cart or other equipment, and the insertion arm 30 coupled to the cutting body 10 can be moved in a pitch Parts.

The driving unit 20 drives the wire saw 50 and may be directly coupled to the cutting body 10 or may be spaced apart from the cutting body 10.

In the drawing of this embodiment, the driving part 20 is shown to be spaced apart from the cutting body 10 and mounted elsewhere.

The driving unit 20 drives the wire saw 50 to rotate and at the same time moves the wire saw 50 as a whole back and forth.

As the structure in which the driving unit 20 moves the wire saw 50 while rotating the wire saw 50 as described above, it is sufficient to use a conventionally known structure such as a guide rail structure, an LM guide, and a cylinder structure.

The wire saw 50 can be moved in the forward and backward direction as a whole by rotating the wire saw 50 by the driving unit 20. By the forward and backward movement of the wire saw 50 by the driving unit 20, The tensile force of the elastic member 50 can be adjusted.

The insertion arm 30 is formed in a plurality of bar shapes and has one end coupled to the front of the cutting body 10 and the other end protruding forward.

In the present embodiment, the entry arm 30 is formed of two pieces and is separated from each other at both front ends of the cutting body 10, and the other end is arranged to protrude forward.

Although the entry arm 30 is shown as a first entry arm 31 and a second entry arm 32 which are spaced apart from each other in the drawing of the present embodiment, ≪ / RTI >

The entry arm 30 is inserted into the entry hole 71 formed in the rock wall as described later.

The insertion arms 30 may be separately provided without the cutting body 10 and inserted into the entry holes 71, respectively.

The insertion arms 30 mounted on both ends of the cutting body 10 can be moved in both directions of the cutting body 10 to adjust the spacing therebetween.

One end of the insertion arm 30 coupled to the cutting body 10 may be mounted to be pivotable relative to the cutting body 10 independently of each other.

Therefore, when the entry hole 71 formed in the rock wall is formed to be twisted, the entry arm 30 can be easily and easily inserted into the entry hole 71, which is twisted by turning the entry arm 30 relative to the cutting body 10 Can be inserted.

Also, the length of the entry arm 30 may be extended through a cylinder structure or the like.

A through hole 33 in which the wire saw 50 is disposed is formed in the arm 30.

The direction changing unit 40 is coupled to the other end of the entry arm 30 to change the moving direction of the wire saw 50 installed along the entry arm 30.

The direction switching unit 40 includes a bracket 41, a first guide roller 42 and a second guide roller 43.

The bracket 41 is engaged at the other end of the arm 30.

The first guide roller 42 and the second guide roller 43 are coupled to the bracket 41 and rotate about the center axis of the direction perpendicular to the longitudinal direction of the entry arm 30.

The first guide roller 42 and the second guide roller 43 are independently rotated or rotated together.

Preferably, the first guide roller 42 and the second guide roller 43 are mounted on the bracket 41 so as to rotate independently of each other.

The first guide roller 42 and the second guide roller 43 are arranged in parallel and are rotatably coupled to the bracket 41 by the same rotational axis.

The first guide roller 42 and the second guide roller 43 are installed in the first and second entry arms 31 and 32, respectively.

Although the bracket 41 may be fixed at the other end of the arm 30, the bracket 41 may be rotatably coupled about the longitudinal direction of the arm 30 as in the present embodiment. .

The bracket 41 is provided with a protrusion 44 projecting outwardly to prevent the first guide roller 42 and the second guide roller 43 from contacting the inner surface of the entrance hole 71 do.

The spacing protrusions 44 protrude outward from the outer circumferential surface of the bracket 41, that is, perpendicular to the longitudinal direction of the entry arm 30.

The wire saw 50 has a closed loop shape of an endless track and is installed along the driving part 20, the input arm 30 and the direction switching part 40.

In the present embodiment, the wire saw 50 includes a first wire saw 51 and a second wire saw 52, which are formed of separate closed loops.

3, the first wire saws 51 are connected to the first guide rollers 42 of the first entry arm 31 and the first guide rollers 42 of the second entry arm 32, (42).

The second wire saws 52 guide the second guide rollers 43 of the first entry arm 31 and the second guide rollers 43 of the second entry arm 32 spaced apart from each other.

That is, the first wire saw 51 and the second wire saw 52 are separated from each other and rotate independently of each other.

The first wire saws 51 and the second wire saws 52 are spaced apart from each other between the first entry arm 31 and the second entry arm 32.

Unlike the present embodiment, the wire saw 50 may have three or more pieces.

The wire saw 50 moves by the operation of the driving unit 20 and is moved in the forward and backward directions while the tension of the wire saw 50 is adjusted by the forward and backward movement of the driving unit 20. [

The wire saw 50 is turned by the first guide roller 42 or the second guide roller 43 after passing through the through hole 33 formed in the entry arm 30.

That is, the first wire saws 51 are turned by a pair of the first guide rollers 42 and the second wire saws 52 are turned by the pair of second guide rollers 43 .

The wire saw 50 penetrates the through hole 33 formed in the entry arm 30 so that the wire saw 50 can be stably transported without being detached.

In some cases, the wire saw 50 may be installed outside the inside of the entry arm 30 and connected to the direction switching unit 40.

In order to separately rotate the first wire saw 51 and the second wire saw 52 made of separate closed loops, in the present embodiment, the driving unit 20 includes a driving body 21, And includes a roller 22 and a second drive roller 23.

The driving body 21 is equipped with a motor for rotating the first driving roller 22 and the second driving roller 23 and a structure for adjusting the tension of the wire saw 50.

The first driving roller 22 is rotatably coupled to the driving body 21 and moves the first wire saw 51.

The second driving roller 23 is rotatably coupled to the driving body 21 and moves the second wire saw 52.

The first wire saw 51 and the second wire saw 52 can be independently rotated by the first driving roller 22 and the second driving roller 23, A plurality of wire saws 50 may be spaced apart from each other between the arm 31 and the second arm 32 in parallel.

The present invention further includes a flow restricting portion 60 formed on the entrance arm 30 for blocking the movement of the entrance arm 30 when the entrance arm 30 is inserted into the entrance hole.

The flow blocking section 60 includes a stopper 61 disposed on the outer circumferential surface of the entry arm 30 between one end of the entry arm 30 and the stopper 61 disposed between the stopper 61 and the entry arm 30, And a wedge driving unit 63 for moving the moving wedge 62. The wedge driving unit 63 may include a wedge driving unit 63 for moving the moving wedge 62,

The stopper 61 is composed of a plurality of operations. The moving wedge 62 has an inclined outer circumferential surface, and the wedge driving part 63 is a hydraulic cylinder or the like.

The moving wedge 62 is inserted between the stopper 61 and the entry arm 30 by the wedge driving part 63 as shown in FIG. As shown in Fig.

The moving wedge 62 is moved between the stopper 61 and the entry arm 30 by the wedge driving part 63 in a state where the stopper 61 composed of a plurality of pieces is arranged in the entrance hole 71 The stopper 61 is brought into close contact with the inner circumferential surface of the entry hole 71 while being away from the outer circumferential surface of the entry arm 30.

Therefore, the entry arm 30 inserted into the entry hole 71 can be maintained in a fixed state without shaking, so that the operation can be facilitated.

The method of cutting the rock wall using the rock cutter using the multi-wire saw according to the present invention is mainly used for excavating a tunnel, and includes a hole forming step and a cutting step.

The rock wall cutting method of the present invention is not necessarily used for tunnel excavation but can be used for cutting a rock wall in various fields. In this embodiment, excavation of a tunnel will be described as an example.

As shown in FIG. 5, the hole forming step forms a plurality of entry holes 71 by using a separate punching device on the rock wall.

The cutting step is a step of cutting the rock wall between the entrance holes 71 spaced apart from each other by using the wire saw 50 to form the cutting portion 73.

In the cutting step, the cutting hole 73 is formed between the entry hole 71 and the charge hole 72 using a wire saw 50 between the charge hole 72 and the protection object 76 .

Here, the cutting portion 73 refers to an empty space formed by the wire saw 50.

Then, a hexagonal center groove 74 is formed at the center of the rock wall to form a free surface together with the cut portion 73.

At this time, the charge hole 72, the cutting portion 73, and the center groove 74 may be formed in a different order.

The cut part 73 may be continuously formed to have a shape similar to a line to be roughly tunnelled, and the cut part 73 may be formed outside the tunnel excavation expected line.

At the cutting step, a plurality of wire saws (50) are used to simultaneously form two or more cutting portions (73) spaced apart from each other between two entrance holes (71).

That is, the first wire saws 51 and the second wire saws 52, which are spaced apart from each other in the rock wall cutting device, interconnect the entrance holes 71 between the two entrance holes 71 Two cutting portions 73 are formed.

This is different from the conventional one in that a plurality of cutting portions 73 are formed as compared with the case where one cutting portion 73 is formed between the two entrance holes 71. In particular, Which is different from the prior art in that a plurality of cutting portions 73 are formed at the same time, not sequentially.

That is, the present invention differs from the prior art in that a plurality of cutting portions 73 connecting the two entrance holes 71 can be formed at the same time, and a plurality of the cutting portions 73 are simultaneously formed It is possible to shorten the working time and the working process more than one by one.

The blasting vibration can be reduced by using the above rock cutting method.

The excavation method for reducing the blasting vibration of the present invention comprises a hole forming step, a cutting step, a mat inserting step, and a footing step.

The hole forming step and the cutting step are the same as the above-mentioned rock cutting method, and a detailed description thereof will be omitted.

Two or more cutting portions 73 spaced apart from each other between the two entry holes 71 are simultaneously formed by using the plurality of wire saws 50 by the cutting step.

The step of inserting the mat is a step of inserting the mat 75 into the cutter 73.

The mat 75 is made of a material having elasticity and / or a porous material.

The mat 75 may be made of various conventional soundproof or dustproof mats 75, such as rubber, sponge, styrofoam, synthetic resin panels, and the like.

The blasting step is a step of blasting the rock wall using the gunpowder inserted into the charge hole 72.

The blasting vibration generated in the blasting step is reduced by two or more of the cutting portions 73 and the mats 75 and this means that the propagation of the blasting vibration to the protection object 76 can be minimized .

By inserting the mat 75 into the cut portion 73 formed by the wire saw 50 as described above, the blasting vibration can be prevented from being generated by the cutting object 73, It is possible to reduce the propagation of the electromagnetic waves to the antenna.

Particularly, in the present invention, by forming a plurality of cutting portions 73 between the two entrance holes 71 by the above-described rock wall cutting device and method, it is possible to more effectively block propagation of the blasting vibration to the protection object 76 have.

Although the tunnel excavation has been described as an example in this embodiment, blasting vibration can be reduced by applying the present invention even when excavating not only a tunnel but also a basement.

Second Embodiment

FIG. 6 is a plan view of a rock cutter according to a second embodiment of the present invention, and FIG. 7 is a side view of a rock cutter according to a second embodiment of the present invention.

The second embodiment differs from the first embodiment in that the wire saw 50 and the driving unit 20 are different from each other.

The wire saw 50 includes a first wire saw 51 and a second wire saw 52 integrally connected to form a closed loop.

That is, the first wire saw 51 and the second wire saw 52 do not form a closed loop independently of each other, but are connected to each other.

The driving unit 20 includes a driving body 21 and a third driving roller 24.

The driving body 21 is provided with a motor and a tension adjusting unit.

The third driving roller 24 is rotatably coupled to the driving body 21 and moves the wire saw 50.

The wire saw 50 includes a third driving roller 24, a first guide roller 42, a third driving roller 24, a second guide roller 43 and a third driving roller 24 do.

That is, the wire saw 50 starts from the third driving roller 24, passes through a pair of the first guide rollers 42, winds the third driving roller 24, After passing through the second guide roller 43, the third driving roller 24 is connected again to the other end to form one closed loop.

To this end, the third driving roller 24 is formed with two or more grooves for winding the wire saw 50.

At this time, the third driving roller 24 may transmit the rotational force to all of the wire saws 50 wound around. In this case, the third driving roller 24 is composed of two wires, one of which transmits rotational force and the other of which does not transmit rotational force, 50 which are not shown in the drawings.

As described above, in the second embodiment, by controlling one of the third driving rollers 24, the first wire saw 51 and the second wire saw 51, which are arranged to be spaced apart from each other between the pair of direction switching portions 40, The movement and tension of the wire saw 52 can be adjusted.

Other details are the same as those of the first embodiment, and a detailed description thereof will be omitted.

The rock cutting apparatus and cutting method using the multi wire saw of the present invention and the excavation method using the same are not limited to the above embodiments but can be variously modified within the scope of the technical idea of the present invention.

10: cutting body,
20: driving part, 21: driving body, 22: first driving roller, 23: second driving roller, 24:
30: Entry arm, 31: First entry arm, 32: Second entry arm, 33: Through hole,
40: direction changing unit, 41: bracket, 42: first guide roller, 43: second guide roller, 44:
50: wire saw, 51: first wire saw, 52: second wire saw,
60: flow blocking portion, 61: stopper, 62: moving wedge, 63: wedge driving portion,
71: entrance hole, 72: charge hole, 73: cutting portion, 74: center groove, 75: mat, 76: object to be protected.

Claims (12)

A driving unit for driving the wire saw;
A plurality of entry arms formed in a rod shape and inserted into mutually spaced apart entrance holes;
A direction switching unit coupled to the other end of the entry arm;
A closed loop type wire saw installed along the driving unit, the entry arm, and the direction switching unit;
A stopper disposed on an outer circumferential surface of the entry arm between one end and the other end of the entry arm;
A moving wedge inserted between the stopper and the entry arm;
And a wedge driving unit for moving the moving wedge,
The wire saw moves by the operation of the driving unit, the tension of the wire saw is adjusted by the forward and backward movement of the driving unit,
Wherein the entry arm comprises a first entry arm and a second entry arm spaced apart from each other,
Wherein,
A bracket coupled to the other end of the arm;
And a first guide roller and a second guide roller which are coupled to the bracket and rotate about a center axis in a direction perpendicular to the longitudinal direction of the entry arm,
The wire-
A first wire saw which traverses a first guide roller of the first entry arm and a first guide roller of the second entry arm spaced apart from each other; And a second wire saw which traverses a second guide roller of the first entry arm and a second guide roller of the second entry arm, which are spaced apart from each other, between the first entry arm and the second entry arm, The saws are spaced apart from each other,
Wherein the stopper is moved away from the outer circumferential surface of the entry arm as the moving wedge is inserted between the stopper and the entry arm. The method according to claim 1,
Wherein the first guide roller and the second guide roller are rotated independently of each other. The method according to claim 1,
Wherein the first guide roller and the second guide roller are rotated together. The method according to claim 1,
Wherein the first guide roller and the second guide roller are arranged in parallel and are rotatably coupled to the bracket by the same rotation axis. The method according to claim 1,
Wherein the bracket is rotatably coupled to the other end of the entry arm about the longitudinal direction of the entry arm. The method according to claim 1,
A through hole through which the wire saw penetrates is formed in the entrance arm,
Wherein the wire saw is turned by the first guide roller or the second guide roller after passing through the through hole formed in the entrance arm. The method according to claim 1,
The bracket is provided with a protrusion protruding in the outward direction,
Wherein the spacing protrusion prevents the first guide roller and the second guide roller from contacting the inner surface of the entrance hole. The method according to claim 1,
Wherein the first wire saw and the second wire saw each comprise a separate closed loop,
The driving unit includes:
A driving body;
A first driving roller rotatably coupled to the driving body and moving the first wire saw;
And a second drive roller rotatably coupled to the driving body and moving the second wire saw. The method according to claim 1,
Wherein the first wire saw and the second wire saw are integrally connected to each other so that the wire saw is composed of one closed loop,
The driving unit includes:
A driving body;
And a third driving roller rotatably coupled to the driving body and moving the wire saw,
Wherein the wire saw is disposed by traversing a third drive roller, a first guide roller, a third drive roller, a second guide roller, and a third drive roller. delete A hole forming step of forming a plurality of entry holes in the rock wall;
And a cutting step of cutting a rock wall between the entrance holes spaced apart from each other using the rock cutter according to claim 1 to form a cut part,
Wherein a plurality of wire saws mounted on the rock cutter according to claim 1 are used to simultaneously form two or more cut portions spaced apart from each other between two entrance holes in the cutting step . A hole forming step of forming a plurality of entry holes in the rock wall;
A cutting step of cutting the rock wall between the entrance holes spaced apart from each other using the rock cutter according to claim 1 to form a cut part;
A mat inserting step of inserting a mat into the cut part;
And a blasting step of blasting the rock wall using the gunpowder inserted into the charge hole of the rock wall,
In the cutting step, a plurality of wire saws mounted on the rock cutter according to claim 1 are used to simultaneously form two or more cut portions spaced apart from each other between two entrance holes,
Wherein the blasting vibration generated in the blasting step is reduced by at least two of the cuts and the mat.

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