WO2019004665A1

WO2019004665A1 - Equipment and method for cutting bedrock at correct position by means of diamond wire-saw

Info

Publication number: WO2019004665A1
Application number: PCT/KR2018/007127
Authority: WO
Inventors: 정성남; 조광은; 김중희
Original assignee: 주식회사경도
Priority date: 2017-06-27
Filing date: 2018-06-22
Publication date: 2019-01-03
Also published as: KR101853303B1

Abstract

The present invention relates to equipment and a method for cutting bedrock at the correct position by means of a diamond wire-saw, and more particularly, to equipment and a method for cutting bedrock at the correct position by means of a diamond wire-saw that effectively cuts the bedrock in order to collect rocks.

Description

Equipment and method for precise position rock cutting by diamond wire saw

More particularly, the present invention relates to an apparatus and a method for precisely cutting a rock by means of a diamond wire saw which efficiently cuts a rock to collect rocks.

In general, the use of a diamond wire sawing method as a method of dismantling a concrete structure has recently attracted attention.

In the diamond wire sawing method, wire ropes with diamond (DWS) bits are connected at regular intervals to the structure to be cut. Then, the diamond wire sawing method is a method of cutting the structure by applying tension to the wire by transferring the driving pulley by a hydraulic cylinder while rotating the pulley (driving pulley) at a high speed.

The diamond wire sawing method as described above has no limitation on the cutting depth or the cutting angle of the structure. In addition, diamond wire sawing method not only does not damage existing structures, but also can be precisely cut and can be cut regardless of the size of the structure.

These diamond wire sawing methods are classified into two types according to the equipment operation method, one of which is a wrapping method. The wrapping method is extremely limited in that it can be applied only when the conditions of the work site and the object to be cut are met, since the diamond wire saw must be able to contact the ends of the two entrances which can be freely operated.

In addition, the other method is a support method in which the support is fixed and the support is operated through the support. Since the equipment itself needs to be moved forward or backward according to the cutting depth, it is difficult to apply it in an environment where the work site is narrow or the bottom surface is uneven. In addition, the support system is disadvantageous in that work efficiency and efficiency are reduced because the support is fixed to the entrance hole or to the equipment itself.

Therefore, it is required to develop a technique for preventing the work efficiency from being lowered according to the environment of the workplace.

The present invention provides an apparatus and a method for precise positioning of a diamond wire saw by means of a diamond wire saw which does not move the diamond wire saw equipment and is capable of a wide range of cutting.

In the method of cutting a fixed position rock with a diamond wire saw according to an embodiment of the present invention, a cradle equipped with a diamond wire saw that communicates between two support rods and a plurality of hydraulic jacks is coupled to an equipments, The rock is cut at a fixed position by rotating it into orbit.

The apparatus and method for cutting a right-hand rock by a diamond wire saw according to an embodiment of the present invention form a pair of supports capable of advancing and retracting according to cutting conditions and depths, As there is no constraint and the support can be extended without difficulty, a wide range of cutting can be easily done.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front internal structure of a diamond wire saw according to an embodiment of the present invention; FIG.

The present invention relates to a diamond wire saw, and more particularly,

FIG. 4 is a structural view of a support connecting portion of a device for cutting a right-hand rock by a diamond wire saw according to an embodiment of the present invention; FIG.

5 is a view showing a fastening structure of a support and a spacer according to an embodiment of the present invention.

FIG. 6 is a side view and a top view of an entrance hole drilled in order to mount a fixed-bed rock cutting equipment by a diamond wire saw according to an embodiment of the present invention; FIG.

FIG. 7 is a structural view of a supporting part and a supporting part working part according to the embodiment of the present invention. FIG.

8 is a view showing a fastening structure of a support stand fixing part according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. Only embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art.

Also, terms including ordinal numbers such as first, second, etc. may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of identifying one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

&Lt; Example 1 >

Next, a description will be made of an apparatus for cutting a right-side rocking block by a diamond wire saw according to an embodiment of the present invention.

The apparatus for cutting a right-position rock by means of a diamond wire saw according to an embodiment of the present invention includes a support for vertically moving and a height adjuster for automatically adjusting the length of the diamond wire saw, So that stable operation is possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front internal structural view of a device for cutting a rock cutter by a diamond wire saw according to an embodiment of the present invention; FIG.

FIG. 2 is a side view showing the construction of a device for cutting a right rock by a diamond wire saw according to an embodiment of the present invention.

1 and 2, the apparatus for cutting a right-position rock with a diamond wire saw according to an embodiment of the present invention includes a driving unit 1 for providing power to the rock cutting equipment, A wire saw 12 connected to the main shaft 2 and provided with driving force by the main pulley 2 and having a part of contact with the rock bed to be cut, a main pulley 2 connected to the main pulley 2, 2 and connected to the main pulley 2 by the wire saw 12 and a plurality of stretch adjusting portions 9 which are located on the right and left sides of the stretch adjusting portion 9 and are connected to the stretching adjusting portion 9 And a pair of support rods (4) having a distal pulley (14) for guiding the wire saw (12) to the cut surface at a lower end.

Through the rotation of the main pulley, the wire saw connected to the pair of supports cuts the cut surface and cuts in the downward direction.

The main pulley 2, the stretch adjusting portion 9 and the pair of supporting rods 4 are mounted on a holder 3 of a divided structure 16 which can be adjusted in width so as to be connected to the driving portion 1, The cradle 3 is mounted on the front portion of the driving unit 1 so that it can be easily used in the conventional driving unit 1. [ Here, the cradle 3 of the divided structure is connected via the cradle length adjusting plate 16, and the number of the divided structures is set to three as one embodiment, but the present invention is not limited thereto.

The support base 3 is provided with grooves on which the support rods 4 can be mounted so that the rear side of the support rods 4 can be stably positioned and the support rods and the grooves are spaced apart from each other by a predetermined distance to allow the support rods to move .

An outrigger 7 for supporting the balance of the whole equipment and a load is provided at the bottom of the mount 3 and the drive unit 1.

The outrigger 7 is formed in a shape capable of adjusting the height. The bottom part is provided with a moving unit. When the moving unit is moved, the outrigger 7 is adjusted to move the holder 3 and the driving unit 1, So that it can be easily moved.

The construction of the rock cutting equipment will be described in more detail below.

The drive unit 1 is constituted by a drive motor for driving a pulley and forms a drive shaft which can be mounted on the main pulley 2. [

The main pulley 2 is connected to receive a rotational driving force from the driving unit 1 and provides a contact driving force to the wire saw. The main pulley 2 is connected to the main pulley 2 ) Is provided on the outer periphery of the wheel forming the steering wheel.

The main pulley 2 is connected to and driven by the drive shaft of the drive unit 1. The mount base 3 is formed with a drive unit connector through which the drive shaft can pass, 2) can be mounted.

In addition, the wire saw 12 is provided with a driving force by the main pulley 2 and is formed such that a section thereof is in contact with a rock mass to be cut. In one embodiment, , But is not limited thereto.

The elongation adjusting unit 9 is disposed at the left and right sides of the main pulley 2 and is connected to the main pulley 2 by the wire saw 12. More specifically, (9) is formed in a structure in which one side is open and the other side is closed, a cylinder tube (10) in which a predetermined space is formed inside, one side is located in an inner space of the cylinder tube (10) A piston portion 10 slidably operated through a fluid inside the cylinder tube 10 and an elongate pulley 9 guiding a wire saw extending from the main pulley 2 at the other end portion of the piston portion 10, .

The cylinder tube 10 is fixed to the cradle 3 so that the extension pulley 9 can freely move up and down in accordance with the movement of the piston 10. The cradle 3 is provided with the

cylinder tube

10, 10 are fixed.

The length of the wire saw extending from the outermost extension pulley 9 to the lower end of the support base 4 is adjusted according to the length of the cylinder tube and the piston unit 10 in which the piston is inserted into the cylinder tube.

The control of the cylinder tube and the piston unit 10 includes a separate control unit so that the hydraulic cylinder 10 can be controlled at the same time when the pair of supports 4 is increased. That is, as the pair of supports 4 move downward, the length of the wire saw 12 extending from the main pulley 2 can be increased accordingly.

The plurality of extension control sections (9) are arranged such that the expansion and contraction directions of the piston sections slidingly operated in the respective cylinder tubes arranged in the interior of the cylinder tubes are opposite to each other, and the number of the extension control sections (9) Three, but is not limited thereto.

The operation of the plurality of extension control units will be described in more detail with reference to FIG.

3 is a structural view illustrating the operation of the extension control unit and the support of the apparatus for cutting a right-position rock by a diamond wire saw according to an embodiment of the present invention.

Referring to FIG. 3, when the rock on the surface is severed, since the rock cutting should proceed to the lower end, the extension portion is actuated so that the piston portion 10 in the extension portion is inserted into the cylinder tube 10, The length of the wire saw 12 extending to the lowermost end of the support table 4 increases. Here, the support is extended at the same time to the length of the wire saw 12 extending due to the extension pulley 9.

Therefore, it is possible to cut downward easily without moving the rock cutting equipment.

The support base 4 is a pair of wire saws positioned on the left and right sides of the elongation adjusting unit 9 and connected to the elongation adjusting unit 9 through the penetration holes 15, And the cradle 3 is disposed in each of the grooves of the cradle 4 or placed in the cradle guide groove formed inside the cradle 3. [

The pair of support rods 4 are formed at an upper end and are connected to each other by bolts to connect additional supports so that the length of the support rods can be extended. An auxiliary pulley 11 formed at an end of the wire saw to control the travel angle and path of the wire saw and a distal pulley 14 formed at the lowermost end to wrap and move the wire saw and to change the traveling direction of the wire saw, 4 will be described in detail.

4 is a structural view of a support connecting portion of a device for cutting a right-hand rock by a diamond wire saw according to an embodiment of the present invention.

Referring to FIG. 4, the supporter connecting portion 5 means a through-hole formed at the upper end of the lower end support and a support-end connector housing having a through-hole formed at the lower end of the upper end support.

Also, since the upper end support member is also formed with a through hole at the upper end thereof, the support member can be easily connected to the same type of support member.

A distal pulley 14 is provided at the lower end of the lower end support to swing the wire saw so as to switch the direction of the wire saw. The direction of travel of the wire saw in the entrance hole is changed to 90 degrees, Ensure that the necessary tension is generated.

The auxiliary pulley 11 is formed above the front pulley 14 to control the travel angle and path of the wire saw and has a smaller diameter than the front pulley 14. [

The wire saw 12 is connected from the extension pulley 9 to the front end pulley 14 through the auxiliary pulley 11 even if the front end pulley 14 goes down along the entry hole, The wire saw 12 is moved in the direction in which the auxiliary pulley 11 and the front end pulley 11 are rotated even if the support table 4 enters the entrance hole 15 while keeping the angle from the extension pulley 9 to the support table 4 constant, 14 so as to enter the entry hole 15 in a straight line so as to prevent the wire saw 12 from being caught by the entry hole.

The pair of support rods 4 are formed at the upper end spaced apart from the distal pulley 14 and have a spacer 13 for keeping the distance between the support rods and the entrance hole 15 constant. Described in detail.

5 is a view illustrating the structure of a support and a spacer according to an embodiment of the present invention.

Referring to FIG. 5, the spacer 13 includes a through hole formed through a part of the support body and a spacer housing for fixing the body to the support. The body of the spacer 13 protrudes through the through- The spacing distance between the support 4 and the entry hole 15 can be adjusted by limiting the length of the spacer 13 and the spacer housing is a fastening structure that allows the spacer 13 to be coupled to the support.

The spacer 13 thus separates the support 4 and the entry hole 15 from each other so that the front pulley 14 can be freely switched when the direction of travel of the front pulley 14 is changed.

The entrance hole 15 is a hole drilled before the start of the work so that the end pulley, the wire saw 12 and the support 4 can freely enter by the depth of cut of the rock, referring to Fig.

FIG. 6 is a side view and a top view of a penetrating hole for mounting a device for cutting a right-hand rock by a diamond wire saw according to an embodiment of the present invention.

Referring to FIG. 6, the entrance holes 15 are arranged such that two or more holes are arranged at predetermined intervals and depths, and the entrance holes 15 are drilled further deeper than the expected cut depth. Here, the additional cutting depth is 50 cm, but is not limited thereto.

Generally, as the strength of the rock is weaker, vibration and noise tend to occur less. Therefore, vibration and noise are less when the number of halo rocks around the free surface is larger, whereas when the number of rocks is less around the free surface Vibration and noise are largely generated. Here, the free surface refers to the lengthwise face cut through the wire sawing machine cutting equipment.

Accordingly, in order to prevent vibration transmission to the external structure during the blasting, a vibration blocking wall is provided on the free surface so that the vibration damage generated from the vibration source is transmitted to the structure .

In addition, the cradle 3 is provided at the center of the attached support and includes a support base actuating part 6 for moving the support in the vertical direction, which will be described in detail with reference to FIG.

FIG. 7 is a structural view of the supporting part and the supporting part working part according to the embodiment of the present invention. FIG.

Referring to FIG. 7, the cradle 3 includes a support portion actuating portion 6 on one side thereof, with a gear which is in contact with a front portion of the support frame, and on the other side thereof a drive motor for generating a rotational force. Accordingly, support gears that are staggeredly engaged with the gears in the support portion actuating portion 6 are formed on the entire front portion of the pair of support rods 4.

In addition, the gear form of the support portion actuating portion 6 is formed in the form of a pinion gear as one embodiment, and the shape of the support gear may be formed of a rack gear, but is not limited thereto.

Therefore, when the drive motor is rotated in the counterclockwise direction, the support table 4 is moved upward, and when the drive motor is rotated in the clockwise direction, the support table 4 is lowered.

Further, the pair of support rods 4 form four support rods 8 to be fixed to the roosting rods, which will be described in detail with reference to FIG.

8 is a fastening structure diagram of a support stand fixing part according to an embodiment of the present invention.

Referring to FIG. 8, there are provided a front connecting plate which is located in the front part A of the cradle and which is disposed in each of the grooves of the cradle, and a cradle which is located in the back of the cradle B, And a binding member which is disposed on both sides of the front connection plate and the rear connection plate and couples the cradle to each of the grooves of the support base, wherein the front connection plate and the back connection plate are arranged on the inner side And are formed in an outwardly bent shape so that the front and back surfaces of the support rods can be positioned, respectively.

In order to facilitate the vertical movement of the support table 4, the support table 4 is disposed such that the contact surfaces of the table 3, the front connection plate, and the rear connection plate are spaced apart from each other by a predetermined distance.

A coupling groove is formed at both sides of the front connection plate and the back connection plate, and a coupling groove is formed at a position of the coupling base 3 corresponding to the coupling member groove to enable bolt connection between the coupling cradles.

In another embodiment, the support stand fixing portion 8 includes a link plate formed on both sides of the front portion of the support on which the support rack gear is located, and a coupling member connecting the link plate to the mount.

A coupling member fastening groove is formed at a position of the cradle 3 corresponding to the position of the coupling member groove of the coupling plate so that the coupling plate and the cradle 3 can be bolted to each other.

In addition, the connection plate is spaced apart from the support gear by a predetermined distance to allow movement of the support.

&Lt; Example 2 >

Next, a description will be given of a method of cutting a right-position rock by a diamond wire saw according to an embodiment of the present invention.

In the method of cutting a right-position rock by a wire saw according to an embodiment of the present invention, a rock cutting machine is installed on a perforated entrance hole, and the continuous operation of the rock is cut by a minimum additional operation And the work efficiency increases accordingly.

In the method of cutting a right-side rock by a wire saw according to an embodiment of the present invention, in order to cut a rock, at least two penetration holes into which a pair of supports can respectively enter are drilled in accordance with a predetermined cutting width (Step S810), and a rock cutting apparatus (step S820) is installed to place the leading pulley of the support on the two entrances of the first of the perforated entrances.

Thereafter, in the equipment installation step, the rock cutter at the first position is cut downward by using the installed rock cutter (step S830), and when the rock cut at the first position is finally cut, Move the rock cutter to the 2 position (S840).

Also, the manner of installing the equipment, cutting the rock, and moving the equipment is repeatedly performed in accordance with the number of the perforated entrance holes.

Further, each step of the method of cutting the right-position rock by the wire saw will be described in more detail below.

The step of drilling the entrance hole (S810) is a step of drilling at least two entrance holes through which a pair of supports can enter, respectively, in order to cut a rock, according to a predetermined cutting width, It punches.

In addition, at this time, in addition to the entrance ball, a hole is drilled around the free surface to reduce noise and vibration.

In addition, the equipment installation step (S820) is a step of installing a rock cutting equipment by placing a support at a first position among the entrance holes drilled at the entrance hole drilling step (S810), wherein the first position is the two entrance Means an arbitrary entry hole position in which the balls are numbered in order. For example, if the number of the entry hole from the left is 1, 2, or 3, the first position means between the entry holes 1 and 2, and the second position means between the entry holes 2 and 3.

In addition, before the installation of the equipment (S820), a cradle equipped with a rock cutter having a width adjusted according to the width between the entrance holes is installed (a cradle installation step: S821), and a support cradle is installed on the cradle Installation step: S822).

Thereafter, a diamond wire saw is installed on a mount provided with the support (S823).

In more detail, the step S821 of installing the cradle is a step of installing a cradle equipped with a rock cutter having a width adjusted according to the width between the entrance holes. The main pulley 2, The width of the mounted stand is adjusted through the stand length adjusting plate 16 so that the main pulley 2 can be mounted on the driving shaft of the driving unit 1. [

In addition, in the step of installing the support (S822), in the step of installing the support in the mount stand in the mount stand (S821), a step of covering the front side of the support using a connection plate capable of being bolted to the upper and lower ends of the left and right sides of the mount Combine with the mount. Then, the cradle is adjusted to the position and the outrigger 7 is adjusted to be fixed.

The wire saw installation step S823 is a step of installing diamond wire saws on the support table provided with the support member and the diamond wire saws are attached to the main pulley 2, the extension pulley 9, the front end pulley 14 and the auxiliary pulley 11, Allow the saw to touch.

After performing the steps S821, S822, and S823, the supporting rods are positioned in the two entrance holes at the first position, and the cutting of the wire saws is possible Place the wire saw on the top surface between the entry holes.

The step S830 of cutting the rock is a step of cutting the rock in the first position by using the rock cutting equipment installed in the equipment installation step and driving the main pulley so as to cut the uppermost rock mass in the wire saw, (S831). When the wire saw is driven in the wire saw driving step, a supporting step (S832) of moving the support member in the downward direction through the supporting member actuating part and reducing the hydraulic cylinder in the stretching pulley is performed.

More specifically, the wire saw driving step S831 drives the main pulley 2 through the driving unit 1 so that the wire saw is rotated in an endless track so that the rock on the upper surface thereof can be cut.

In addition, the support step control step S832 may increase the length of the wire saw by reducing the hydraulic cylinder of the extension pulley 9 while controlling the support arm to move downward by rotating the support arm actuating part 6.

In addition, the support stage control step S832 may automatically control the support stage to be increased by a predetermined length at predetermined time intervals while the wire saw driving step S831 is performed.

The above steps are then repeated to cut the rock bed between the entry hole locations by a predetermined depth.

The apparatus moving step S840 is a step of moving the rock cutting equipment to a second position when the rock in the first position is finally cut in the rock cutting step S830, The support arm is pulled out by rotating the support arm in the reverse direction.

After pulling out the support, the outrigger is reduced to move the rock cutting equipment through the moving means provided at the bottom.

In addition, one of the inflow holes at the second position in the equipment moving step may be used to cut the rock in the overlapping position at one of the inflow holes at the first location. This increases work efficiency as continuous work is possible.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention.

[Description of Symbols]

1:

2: Main pulley

3: Cradle

4: Support

5:

6:

7: Outrigger

8:

9: elongated pulley

10: Cylinder tube and piston

11: Auxiliary pulley

12: wire saw

13: Spacer

14: end pulley

15: entry ball

16: Length adjustment plate

Claims

A drive for providing power to the rock cutter;

A main pulley connected to receive a rotational driving force from the driving unit and providing a contact driving force to the wire saw;

A wire saw which is provided with driving force by the main pulley and is formed so as to be in contact with a part of a rock mass to be cut;

A plurality of extension adjusters positioned at left and right sides of the main pulley and connected to the main pulley and the wire saw; And

A pair of support rods disposed at left and right sides of the elongation control portion and having a distal end pulley at a lower end for guiding a wire saw connected to the elongation control portion to a cut surface; And,

Wherein the elongation-

A cylinder tube having one side open and the other side closed and a predetermined space formed inside;

A piston part having a structure in which one side is located in the inner space of the cylinder tube and the other side is exposed to the outside and sliding operation is performed through the fluid inside the cylinder tube; And

An extension pulley at the other end of the piston portion for guiding a wire saw extending from the main pulley; And,

Wherein the cylinder tube is fixedly disposed at a predetermined position.
The method according to claim 1,

Wherein the main pulley, the elongation control unit, and the pair of supports are mounted on a mount provided with a drive unit connector through which the drive shaft of the drive unit passes.
The method of claim 2,

Wherein the bottom portion of each of the corners is provided with an outrigger that supports the load and maintains the balance of the entire equipment in a lower portion of the cradle and the driving portion.
The method of claim 2,

The cradle,

And a driving motor for generating a rotational force is formed on the other side of the supporting portion. And a cutting device for cutting the right-side rocking piece by a wire saw.
The method of claim 2,

Wherein the pair of supports is formed in an 'H' shape, and the cradle is disposed in each groove of the support, respectively.
The method of claim 5,

The cradle includes a front connection plate which is located at a front portion of the cradle and fixes the cradles respectively disposed in the respective grooves of the cradle, a rear connection plate which is located at the rear portion of the cradle and fixes the cradle, And a binding member for coupling the cradles arranged respectively in the grooves; Wherein the wire saw is further configured to cut a predetermined amount of rock.
The method according to claim 1,

Wherein the plurality of extension control units are disposed such that the expansion and contraction directions of the piston units that are slidably operated in the respective cylinder tubes formed therein proceed in opposite directions to each other.
The method according to claim 1,

Wherein the pair of supports comprises:

A distal pulley formed at the lowermost end of the support and moving in contact with the wire saw and switching the direction of travel of the wire saw; And a cutting device for cutting the right-side rocking piece by a wire saw.
The method of claim 8,

Wherein the pair of supports comprises:

A support connecting portion formed at an upper end of the support and capable of being bolted to connect an additional support to extend the length of the support; And

An auxiliary pulley disposed at an upper portion of the distal pulley and controlling a travel angle and a path of the wire saw; Wherein the wire saw is further configured to cut a predetermined amount of rock.
The method of claim 2,

The cradle includes a support guide groove,

Wherein the pair of supports is formed in an 'H' shape, and a rear portion is mounted in the groove of the mount, and a front portion of the support is formed and exposed to the outside.
A step of drilling the entrance hole into which the pair of supports can respectively enter, in order to cut the rock, according to a predetermined cutting width;

A step of installing a rock cutting equipment for positioning a front pulley of a pair of support bars in two entrance holes of a first position among the entrance holes drilled in the entrance hole drilling step;

A rock cutting step of cutting the rock in the first position downward by using the installed rock cutting equipment in the equipment installation step; And

Moving the rock cutting equipment to a second position where the two entrance holes are located when the rock in the first position is finally cut in the rock cutting step; And,

Wherein the apparatus installing step, the rock cutting step, and the equipment moving step are repeatedly performed in accordance with the number of drilled holes in the entrance hole drilling step.
The method of claim 11,

Before the equipment installation step,

A main pulley having a width adjusted according to a width between two entrance holes at a first position among the entrance holes drilled in the entry hole drilling step, a main pulley to which wire saws are connected, step;

A support stand mounting step of installing a support stand on the mount stand installed in the mount stand; And

A wire saw installation step of installing a diamond wire saw on a mount provided with the support; And then advancing the cutter to a predetermined position.
The method of claim 11,

In the rock-breaking step,

A wire saw driving step of driving the wire saw by driving the main pulley; And

A downward moving step of moving the support base downward through the support arm actuating part and actuating the extension adjusting part to reduce the length of the piston part when the wire saw is driven in the wire saw driving step; And cutting the rock portion of the first position downward through the wire saw driving step and the downward advancing step.
The method of claim 11,

Wherein when the rock in the first position is finally cut off before the apparatus moving step, the support arm is pulled out by rotating the support arm in the reverse direction.
The method of claim 11,

Wherein one of the inflow holes at the second position in the equipment moving step is one of the inflow holes at the first position.