KR20190087909A - Tunnel excavation machine and method of excavating tunnel using the same - Google Patents

Abstract

A tunnel excavation machine includes a wire saw, jig members, a jig transfer member, a drive pulley, a drill, and a control member. The wire saw includes a wire-shaped metal line having fluidity and a cutting part mounted on the outer circumferential surface of the metal line. The jig members are rotatably connected and include a tip pulley for supporting a tip of the wire saw, and a fixing part radially protruding and fixed in a perforation, and a plurality of the jig members are disposed to face each other. The jig transfer member is connected to the jig members to adjust the position and direction of the jig members. The drive pulley is coupled to the rear portion of the wire saw and rotates while pulling the rear portion of the wire saw to transfer the rotational force to the rock and the tip of the wire saw. The drill forms the perforation. The control member controls the jig transfer member, the drive pulley, and the drill. An object of the present invention is to provide a tunnel excavation machine with reduced vibration and noise and improved efficiency.

Description

TECHNICAL FIELD [0001] The present invention relates to a tunnel excavation apparatus and a tunnel excavation method using the tunnel excavation apparatus.

The present invention is to provide a tunnel excavation equipment and a tunnel excavation method using the same. And more particularly, to a tunnel excavation apparatus in which vibration and noise are reduced and efficiency is improved, and a tunnel excavation method using the same.

Methods of excavating tunnels can be divided into blasting and mechanical excavation.

Blasting excavation is the most common method of excavation, which drills the tunnel construction surface and explodes by installing a charge in the perforated hole. The detached rock mass is removed using the impact of the explosion, and the generated space is supported by a steel lib, a concrete lining, or the like. Blasting excavation is simple in construction equipment and low cost, but oysters can occur due to joints, faults, and rocks in the rock, and problems such as occurrence of relaxation area, blasting vibration, dust, etc. occur.

Machine excavation creates a tunnel by drilling excavating machines such as TBM, SHIELD, Road Header, ITC, and breaker into the rock. Mechanical excavation has the advantages of less vibration and noise and reduced excavation, but it has problems such as high construction cost, limited range of geological condition, and high construction period when rock strength is high.

In Korea, the New Austrian Tunnel Method (NATM) and Tunnel Boring Machine (TBM), which are a kind of machine excavation, are widely used.

The NATM method is a method developed by Prof. Live Seitz of Austria. It uses shotcrete, rock bolt, etc. as a main support material after blasting to suppress the strength softening of the ground as much as possible, . It is very important to manage the field measurement because the support material is applied according to the ground condition of the tunnel due to tunneling. The NATM method has the advantage that it can be installed without any special machinery and the cost is relatively low. However, it is difficult to apply it to small tunnels because a large amount of support material is injected due to a fallout caused by blasting or excessive noise.

The TBM method is a type of mechanical excavation method, which uses an excavator with a circular cross section to pierce the ground and use the surrounding rock as a support. It has the advantage of less fallout, relatively high stability, and shortening of air. However, there is a disadvantage that the excavator is expensive equipment and the operation cost of the equipment is increased, which increases the construction cost.

When blasting is used, construction costs are reduced, but fallout and excavation occur due to impact. In addition, due to vibration and noise caused by blasting, complaints are generated in densely populated areas and the construction process is delayed. In order to solve such a problem of blasting, a technique of using a part of the outer circumferential surface of a tunnel as a buffer to cut off the transmission of vibration and noise by previously cutting it using a wire saw has been studied.

However, in order to form the cushion portion by using the wire saw, it takes a lot of time since the drilling operation, the jig inserting operation, the wire jig connection, and the rotating device connection operation are sequentially performed.

In particular, since the work of inserting the jig and connecting the wires is performed manually, it takes a lot of time due to the poor work environment of the tunnel wall, the weight of the jig itself, and the problem of wire handling. In particular, the tunnel surface may cause safety problems for workers due to the risk of dust and fallout.

Korean Patent No. 10-1054380 (June 29, 2011) Korean Patent No. 10-1634119 (June 22, 2016)

It is an object of the present invention to provide a tunnel excavation apparatus with reduced vibration and noise and improved efficiency.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tunnel excavation method using a tunnel excavation apparatus with reduced vibration and noise and improved efficiency.

As a means for solving the above problems, the present invention provides a tunnel excavation equipment including a wire saw, jig members, a jig transfer member, a drive pulley, a drilling drill, and a control member. The wire saw includes a fluid-like wire-shaped metal line and a cutting part mounted on an outer circumferential surface of the metal line. The jig members include a distal pulley rotatably connected and supporting a tip of the wire saw, and a fixed portion radially protruding and fixed in the perforation, wherein a plurality of jig members are arranged to face each other. The jig transfer member is connected to the jig members to adjust the position and direction of the jig members. The driving pulley is coupled to a rear portion of the wire saw, and pulls and rotates a rear portion of the wire saw to transmit rotational force to the rocker and a tip portion of the wire saw. The perforation drill forms the perforations. The control member controls the jig transfer member, the drive pulley, and the drilling drill.

In one embodiment, the jig transfer member includes a jig stretchable and contractible portion for adjusting a width between the jig members by expanding and contracting a relative distance between the jig members, And a jig driving unit for adjusting the direction.

In one embodiment, if the depth of the perforation is short, the length of the jig stretchable and contractible portion is shortened. If the depth of the perforation is deep, the length of the jig stretchable and contractible portion may be long.

In one embodiment, the drive pulley moves forward and backward so that the tip of the wire saw is in close contact with the tunnel surface between adjacent perforations.

In one embodiment, the tunnel drilling rig may further include a plurality of auxiliary pulleys for guiding the wire saw to allow the wire saw to contact only the tunnel surface between adjacent perforations during pivoting.

In one embodiment, the tunnel drilling rig may further include a drill conveying member connected to the drill drill to change a position of the drill drill.

In one embodiment, the jig member may further include a jetting portion that cools the friction heat between the wire saw and the rock by spraying water.

According to the present invention, there is provided a tunnel excavation method using a tunnel excavation equipment, wherein the tunnel excavation equipment includes a wire-shaped metal line having fluidity and a cutting part mounted on an outer circumferential surface of the metal line A plurality of jig members arranged so as to face each other, a plurality of jig members arranged to face each other, a plurality of jig members arranged to face each other, A jig transferring member connected to the jig members to adjust a position and a direction of the jig members, and a jig transferring unit coupled to a rear portion of the wire saw to rotate and rotate a rear portion of the wire saw, A drive pulley for transmitting rotational force to the jig transferring member, a drilling drill for forming the bore, And a control member for controlling the drilling drill. In the tunnel excavation method, two perforations are formed adjacent to each other using the perforation drill. Subsequently, the jig members are introduced into the perforations. Thereafter, the jig members are fixed within the perforations. Subsequently, the drive pulley is moved backward so that a part of the wire saw disposed between the perforations is brought into close contact with the tunnel surface between the perforations. Then, the driving pulley is rotated to apply a rotational force to the wire saw to form a buffer line between the perforations. Thereafter, as the buffer line is pushed, the drive pulley is moved backward so that the wire saw is brought into close contact with the tunnel surface.

In one embodiment, the step of inserting the jig members into the perforations can readily and quickly determine the position of the jig members using the location data of the step of forming the two perforations.

In one embodiment, water may be injected into the perforations through a jet portion formed in the jig member.

In one embodiment, the step of forming the two perforations may be such that the perforations are slightly inclined upward to allow the ejected water to be smoothly discharged.

As described above, according to the present invention, a shock absorbing line is formed before the first explosion for deepening the center of the tunnel, thereby reducing the propagation of shock or vibration due to the explosion to the outside.

In addition, the jig transfer member scales the relative distance between the first jig body and the second jig body to adjust the width of the first jig body and the second jig body. Therefore, even if the distance between the first and second perforations is changed, the buffer line can be easily pushed.

In addition, it is possible to form buffer lines of various shapes and directions by adjusting the perforation position, the direction, and the position and direction of the jig members.

Also, the buffer line can be easily formed even if the depth of the perforation is varied by adjusting the length of the jig stretching and shrinking portion.

Further, the drive pulley can move forward and backward. When moving the drive pulley back and forth, a part of the wire saw disposed between the first and second perforations can be brought into close contact with the tunnel surface. In addition, as the drive pulley moves backward due to the pivoting of the damping line and pulls the wire saw, the wire saw and friction force can be strongly transmitted to the rock.

Also, by using the auxiliary pulleys, the wire saw is appropriately guided so that the wire saw touches only the tunnel surface between adjacent perforations during pulling, and a suitable tensile force is applied to the wire saw.

In addition, the control member may include a display unit to indicate a punching speed, a rotating speed, a tensile force applied to the wire saw, and the like to inform the user. In addition, the control member can check the tensile force applied to the wire saw in real time and control the rotation and reverse speed of the drive pulley so that an appropriate tensile force can be applied. Therefore, it is possible to prevent cutting of the wire saw due to excessive tensile force of the wire saw and shortening of the wire saw life, and to prevent wire sawing due to too weak tensile force or detachment of the wire saw from the pulley.

Further, it is possible to easily form a perforation at a desired position through the perforation drill and the drill transfer member, and the position data used in the perforating process can be used as it is for setting the position of the jig member.

Further, the drill conveying member and the jig conveying member are prevented from interfering with each other at the time of conveyance, and can be stretched, relaxed, rotated, and other conveyed so that they can be freely conveyed to desired positions.

Therefore, it is possible to perform excavation to reduce noise and vibration, which are advantages of mechanical excavation, while having blasting and mechanical excavation in combination with speed and economical efficiency which are advantages of blasting excavation.

1 is a front view showing a tunnel surface according to an embodiment of the present invention.
2 is a conceptual diagram showing a tunnel drilling rig according to an embodiment of the present invention.
3 is a cross-sectional view showing a driving method of the jig member shown in Fig.
Fig. 4 is a front view showing a cut surface formed using the tunnel excavation equipment shown in Fig. 2; Fig.
5 is a flowchart illustrating a tunnel excavation method using the tunnel excavation equipment shown in FIG.

Before describing in detail several embodiments of the invention, it will be appreciated that the application is not limited to the details of construction and arrangement of components set forth in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front," "back," "up," "down," "top," "bottom, Expressions and predicates used herein for terms such as "left," " right, "" lateral," and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a front view showing a tunnel surface according to an embodiment of the present invention.

Referring to FIG. 1, a tunnel surface 10 is formed in a tunnel surface to excavate a tunnel. The tunnel surface 10 is formed with a plurality of general perforations 11 on which charge (not shown) is installed. A tunnel central portion (15) is formed at the center of the tunnel surface (10).

In principle, when a charge is inserted into a general perforation (11) and the explosion is made, the impact caused by the explosion spreads concentrically. In order to pivot in the direction perpendicular to the tunnel surface 10, it is preferable that the impact caused by the explosion is concentrated inside the tunnel surface 10 without being diverted to the outside.

The tunnel central portion 15 is formed at the center of the tunnel surface 10 so as to concentrate the impact caused by the explosion to the inside of the tunnel surface 10 and the first stage explosion (110).

Specifically, first, a mortar (not shown) is installed on one or more perforations of the tunnel central portion 15 of the tunnel surface 10 to perform the demarcation operation by the primary explosion. A small space (not shown) is formed in the tunnel central portion 15 by the subtracting operation. Then, the general perforation 11 is filled with a charge to perform secondary explosion. During the second explosion, the explosive force due to the charge of the general perforation (11) is propagated to a kind of buffer space formed by the deepening work, and the explosive force is concentrated inside the tunnel surface (10). When the explosive force is concentrated inside the tunnel surface 10, the noise and vibration propagated to the outside are reduced, and the risk of excavation and dropping down is reduced.

However, unlike the secondary explosion which absorbs the impact due to the buffer space of the tunnel central portion 15, in the case of the primary explosion, the impact of the explosion can be propagated to the outside without a separate buffer space. In the embodiment of the present invention, a buffer space is formed in the tunnel central portion 15 by using a tunnel excavation equipment so that the impact due to the primary explosion is prevented from propagating to the outside. The tunnel excavation equipment for forming the buffer space and the tunnel excavation method using the tunnel excavation equipment will be described later with reference to FIG. 2 to FIG.

FIG. 2 is a conceptual view showing a tunnel excavation apparatus according to an embodiment of the present invention, and FIG. 3 is a cross-sectional view illustrating a driving method of the jig member shown in FIG.

1 to 3, a tunnel excavation equipment is installed in an automatic facility or a user on a control member 150 to form perforations 11, 51 and 52 on the tunnel surface 10 or to form preformed perforations 51 and 52 The buffer line 57 is formed.

The tunnel excavation equipment includes a wire saw 103, a first jig member 110, a second jig member 120, a jig transfer member 130, an auxiliary pulley 135, a drive pulley 137, A drill conveying member 145, a control member 150, a conveying member 160, and a body 170. As shown in FIG.

The wire saw 103 is a structure in which a metallic wire having a fluid shape is formed into a closed curve shape and a diamond bit or the like having high strength is mounted on the outer circumferential surface of the metal line. When the wire saw 103 is rotated and brought into contact with the rock plate at a constant pressure, the rock plate is abraded and excavated by diamond bits or the like arranged on the outer circumferential surface of the wire saw 103.

The first jig member 110 supports the upper tip portion of the wire saw 103 and allows the upper tip portion of the wire saw 103 to enter the first perforation 51 of the rock.

The first jig member 110 includes a first peak pulley 111, a first supporting pulley 113, a first jig body 115, a first fixing portion 117, and a first jetting portion 119 do.

The first tip pulley 111 is rotatably connected to an upper tip portion of the first jig body 115 and movably supports an upper tip portion of the wire saw 103 along the groove formed in the outer peripheral surface. As the upper tip of the wire saw 103 moves, the first tip pulley 111 rotates to guide the upper tip of the wire saw 103.

The first support pulley 113 is rotatably connected to the upper portion of the first jig body 115 and movably supports the upper portion of the wire saw 103 along the groove formed in the outer peripheral surface. As the upper portion of the wire saw 103 moves, the first supporting pulley 113 rotates to guide the upper portion of the wire saw 103.

A plurality of first fixing portions 117 protrude radially along the outer peripheral surface of the first jig body 115 and are fixed to the inner surface of the first perforation 51. The first jig body 115 is strongly fixed to the inside of the first perforation 51 by the first fixing portion 117.

The first jig body (119) protrudes to the lower portion of the first jig body (115) and injects water. The water jetted by the first jetting section 119 cools the frictional heat between the wire saw 103 and the rock mass and prolongs the life of the wire saw 103.

The first jig body 115 is fixed in the first perforation 51 through the first fixing portion 117 and fixed to the wire saw 103 using the first distal pulley 111 and the first supporting pulley 113. [ The upper tip portion and the upper portion of the guide member are guided. In this embodiment, the first jig body 115 is coupled with a plurality of expandable segments so as to guide the upper tip of the wire saw 103 in various lengths according to the depth of the first perforations 51. [ For example, if the depth of the first apertures 51 is short, the length of the first jig body 115 is shortened so that the first eccentric pulley 111 is positioned near the entrance of the first apertures 51. The length of the first jig body 115 is increased so that the wire saw 103 is strongly adhered to the damping line 57.

The second jig member 120 supports the lower tip of the wire saw 103 and the lower tip of the wire saw 103 into the second perforation 52 of the rock.

The second jig member 120 includes a second peak pulley 121, a second support pulley 123, a second jig body 125, a second fixing portion 127, and a second jetting portion 129 do.

The second tip pulley 121 is rotatably connected to the lower tip portion of the second jig body 125 and movably supports the lower tip portion of the wire saw 103 along the groove formed in the outer peripheral surface. As the lower tip of the wire saw 103 moves, the second tip pulley 121 rotates to guide the lower tip of the wire saw 103.

The second support pulley 123 is rotatably connected to the lower portion of the second jig body 125 and movably supports the lower portion of the wire saw 103 along the groove formed on the outer peripheral surface. As the lower portion of the wire saw 103 moves, the second support pulley 123 rotates to guide the lower portion of the wire saw 103.

A plurality of second fixing portions 127 radially protrude along the outer peripheral surface of the second jig body 125 and are fixed to the inner surface of the second perforation 52. The second jig body 125 is strongly fixed to the inside of the second hole 52 by the second fixing portion 127. [

The second jetting portion 129 protrudes to the upper portion of the second jig body 125 to spray water. The water jetted by the second jetting section 129 cools the friction heat between the wire saw 103 and the rock mass and prolongs the life of the wire saw 103.

The second jig body 125 is fixed in the second hole 52 through the second fixing part 127 and is fixed to the wire saw 103 using the second tip pulley 121 and the second support pulley 123. [ To guide the lower end portion and the lower portion of the guide member. In this embodiment, the second jig body 125 is coupled with a plurality of expandable segments so as to guide the lower tip of the wire saw 103 according to the depth of the second perforation 52. For example, if the depth of the second apertures 52 is short, the length of the second jig body 125 is shortened so that the second eccentric pulley 121 is positioned near the entrance of the second apertures 52 . The length of the second jig body 125 is increased so that the wire saw 103 is firmly brought into close contact with the buffer line 57.

The extent to which the second jig body 125 expands and contracts may be the same or different from the extent that the first jig body 115 expands and contracts. For example, when the degree of pivoting at the upper portion of the damping line 57 differs from the degree of damping at the lower portion of the damping line 57, the first jig body 115 and the second jig body The degree to which the bellows 125 is pushed can be different.

The jig transfer member 130 is connected to the first jig body 115 and the second jig body 125 in a direction opposite to the first direction. The jig transfer member 130 includes a plurality of driving portions 131 and 133 to adjust the position and direction of the first jig body 115 and the second jig body 125.

The jig transfer member 130 includes a jig extending portion 131 and a jig driving portion 133.

The jig stretchable and contractible portion 131 is disposed at the front portion of the jig transfer member 130. The jig stretching portion 131 adjusts the widths of the first jig body 115 and the second jig body 125 by expanding and contracting the relative distances between the first jig body 115 and the second jig body 125. Therefore, even if the distance between the first perforation 51 and the second perforation 52 is changed, the buffer line 57 can be pushed easily.

The jig driving part 133 is connected to the front part of the body 170 and is coupled with the jig extending / contracting part 131 to adjust the position and direction of the jig extending / contracting part 131.

2 and 3, the first jig body 115 and the second jig body 125 are arranged in the vertical direction. However, when the first jig body 115 and the second jig body 125 are rotated by the rotation of the jig driving unit 133, (125) may be arranged in various directions such as a left-right direction, an oblique direction, and the like.

The drive pulley 137 is rotatably connected to the inside of the body 170 and is coupled to the rear portion of the wire saw 103 along the groove formed in the outer circumferential surface. The driving pulley 137 does not merely guide the wire saw 103 but moves the back portion of the wire saw 103 strongly while moving it back so as to transmit the rotational force and the frictional force to the front portion of the wire saw 103, do. The front portion of the wire saw 103 is rubbed against the rock by the rotational force and the frictional force transmitted to the front portion of the wire saw 103 and the buffer line 57 is pushed.

In this embodiment, the drive pulley 137 can move forward and backward. A portion of the wire saw 103 disposed between the first and second apertures 51 and 52 may be in close contact with the tunnel surface 10 when the drive pulley 137 is moved back and forth. The driving pulley 137 is moved backward by pulling the wire saw 103 according to the pivoting of the damping line 57, so that the frictional force with the wire saw 103 can be strongly transmitted to the rock plate.

The auxiliary pulley 135 is rotatably connected to the body 170 and guides the position of the middle portion of the wire saw 103 along the groove formed in the outer peripheral surface. In this embodiment, a plurality of auxiliary pulleys 135 are formed inside and outside the body 170 to guide the position of the wire saw 103.

In this embodiment, the wire saw 103 spans only the advanced pulleys 111 and 121, the support pulleys 113 and 123, the drive pulley 137 and the auxiliary pulleys 135, There is no contact with the element. The wire saw 103 contacts only the tunnel surface 103 between the first and second perforations 51 and 52 arranged outside and pierces the buffer line 57. [

The perforation drill 140 is provided with a cutter at its end and is provided with perforations 11, 51 and 52 such as a general perforation 11, a first perforation 51 and a second perforation 52 in the rock 10 by rotation . Although the end of the drilling drill 140 is shown in a cone shape in FIG. 2, it may have a cylindrical shape.

The drill conveying member 145 connects between the drilling drill 140 and the body 170 and changes the position of the drilling drill 140. [

The control member 150 is disposed inside the body 170 and controls the operation of the jig members 110 and 120 such as the expansion and contraction of the jig members 110 and 120, the water injection operation, the expansion and contraction of the jig extension unit 131, The drive pulley 137, the boring drill 140, the drill conveying member 145, and the conveying member 160, respectively.

On the other hand, the control member 150 may be mounted on a person, but the control member 150 may be constructed as an unmanned system and controlled by external wired or wireless communication.

The transport member 160 is disposed under the body 170 and transports the body 170 on the bottom surface 20 of the tunnel. For example, the transport member 160 may comprise an endless track caterpillar.

Although not shown, the control member 150 may include a display unit (not shown) to notify the user of the punch speed, rotational speed, tensile force applied to the wire saw 103, and the like of the wire saw 103 . In another embodiment, the control member 150 can check the tensile force applied to the wire saw 103 in real time to control the rotational speed and pulling speed of the drive pulley 137 so that the tensile force can be properly maintained. Therefore, the wire saw 103 is prevented from being detached from the pulleys 111, 113, 135, and 137, and proper cutting performance is maintained and the life of the wire saw is prevented.

FIG. 4 is a front view showing a cut surface formed by using the tunnel excavation equipment shown in FIG. 2, and FIG. 5 is a flowchart showing a tunnel excavation method using the tunnel excavation equipment shown in FIG.

1 to 5, in a tunnel excavation method using a tunnel excavation equipment, a drill conveying member 145 is first controlled by a control member 150 so that a drilling drill 140 is placed on a tunnel surface 10 .

Next, the perforation drill 140 is driven to form a general perforation 11, a first perforation 51, and a second perforation 52 on the tunnel surface 10 (step S100). The first perforations 51 and the second perforations 52 can smoothly discharge the water jetted by the first jetting section 119 and the second jetting section 129 in the process of forming the buffer line 57 Make a slight upward slope to allow for.

Subsequently, the perforation drill 140 is retracted into the first perforation 51 or the second perforation 52.

The jig transferring member 130 is controlled by the control member 150 so that the tips of the first and second jig members 110 and 120 are inserted into the first and second apertures 51 and 52, (Step S110). The position data of the first apertures 51 and the second apertures 52 may be transmitted to the control unit 150 through the drill hole 140 in the process of forming the first apertures 51 and the second apertures 52. [ The first jig member 110 and the second jig member 120 are separated from the first and second apertures 51 and 52 by using previously stored position data without a separate centering operation ). ≪ / RTI >

When the tip portions of the first and second jig members 110 and 120 enter the first and second apertures 51 and 52, respectively, the first and second jig members 110 and 120, The front portion of the wire saw 103 disposed between the first hole 51 and the second hole 52 is in contact with the tunnel surface 10 between the first hole 51 and the second hole 52.

The first jig member 110 and the second jig member 120 are inserted into the first hole 51 and the second hole 52 using the first fixing portion 117 and the second fixing portion 127, (Step S120).

Subsequently, the drive pulley 137 is moved backward by the control member 150 so that a part of the wire saw 103 disposed between the first and second apertures 51 and 52 is moved to the tunnel surface 10 (Step S130).

Subsequently, a rotational force and a frictional force are transmitted to the wire saw 103 while applying a rotational force to the drive pulley 137 and backward by the control member 150, and the first and second jetting portions 119 and 129 Water is sprayed on the inner cut surfaces of the first and second drilled holes 51 and 52 to cool frictional heat during cutting and to discharge the generated material.

Thereafter, the drive pulley 137 is moved backward by pivoting the damping line 57 to pull the wire saw 103, thereby transferring the friction force between the wire saw 103 and the rock plate strongly (step S140).

According to the present invention as described above, a buffer line is formed before the primary explosion for the deep drawing operation of the central part of the tunnel, thereby reducing the propagation of shock or vibration due to the explosion to the outside.

In addition, the jig transfer member scales the relative distance between the first jig body and the second jig body to adjust the width of the first jig body and the second jig body. Therefore, even if the distance between the first and second perforations is changed, the buffer line can be easily pushed.

In addition, it is possible to form buffer lines of various shapes and directions by adjusting the perforation position, the direction, and the position and direction of the jig members.

Also, the buffer line can be easily formed even if the depth of the perforation is varied by adjusting the length of the jig stretching and shrinking portion.

Further, the drive pulley can move forward and backward. When moving the drive pulley back and forth, a part of the wire saw disposed between the first and second perforations can be brought into close contact with the tunnel surface. In addition, as the drive pulley moves backward due to the pivoting of the damping line and pulls the wire saw, the wire saw and friction force can be strongly transmitted to the rock.

Also, by using the auxiliary pulleys, the wire saw is appropriately guided so that the wire saw touches only the tunnel surface between adjacent perforations during pulling, and a suitable tensile force is applied to the wire saw.

In addition, the control member may include a display unit to indicate a punching speed, a rotating speed, a tensile force applied to the wire saw, and the like to inform the user. In addition, the control member can check the tensile force applied to the wire saw in real time and control the rotation and reverse speed of the drive pulley so that an appropriate tensile force can be applied. Therefore, it is possible to prevent cutting of the wire saw due to excessive tensile force of the wire saw and shortening of the wire saw life, and to prevent wire sawing due to too weak tensile force or detachment of the wire saw from the pulley.

Further, it is possible to easily form a perforation at a desired position through the perforation drill and the drill transfer member, and the position data used in the perforating process can be used as it is for setting the position of the jig member.

Further, the drill conveying member and the jig conveying member are prevented from interfering with each other at the time of conveyance, and can be stretched, relaxed, rotated, and other conveyed so that they can be freely conveyed to desired positions.

Therefore, it is possible to perform excavation to reduce noise and vibration, which are advantages of mechanical excavation, while having blasting and mechanical excavation in combination with speed and economical efficiency which are advantages of blasting excavation.

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 is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

The present invention can be applied to railway tunnels, road tunnels, trenches, bunkers, subways, mines, underground storage facilities, underground shopping malls, and the like.

10: Tunnel side 20: Floor side
51: first drilling 52: second drilling
57: buffer line 103: wire saw
110: first jig member 111: first tip pulley
113: first support pulley 115: first jig body
117: first fixed portion 119: first divided portion
120: second jig member 121: second tip pulley
123: second support pulley 125: second jig body
127: second fixing portion 129: second division portion
130: jig conveying member 131: jig stretching /
133: jig driving part 135: auxiliary pulley
137: Driving pulley 140: Drilling drill
145: drill feed member 150: control member
160: carrying member 170: body

Claims (11)

A wire saw having a fluid-like wire-shaped metal line and a cutting part mounted on an outer circumferential surface of the metal line;
A jig member including a tip pulley connected to be rotatable and supporting a tip portion of the wire saw, and a fixing portion projecting radially and fixed in the perforation, wherein the jig members are arranged so that a plurality of jigs face each other;
A jig transferring unit connected to the jig members to adjust a position and a direction of the jig members;
A driving pulley coupled to a rear portion of the wire saw to rotate and rotate a rear portion of the wire saw to transmit a rotational force to the rocker and a tip portion of the wire saw;
A perforation drill forming the perforation; And
And a control member for controlling the jig transfer member, the drive pulley, and the drilling drill. The apparatus according to claim 1, wherein the jig transfer member
A jig stretching part for stretching a relative distance between the jig members to adjust a width between the jig members; And
And a jig driving unit coupled to the jig stretching and shrinking unit to adjust a position and a direction of the jig stretching and shrinking unit. 3. The method of claim 2,
Wherein the length of the jig stretching and shrinking portion is shortened when the depth of the hole is short and the length of the jig stretching and shrinking portion is long when the depth of the hole is deep. The method according to claim 1,
Wherein the drive pulley moves forward and backward so that the tip of the wire saw is in close contact with the tunnel surface between adjacent perforations. The method of claim 1,
Further comprising a plurality of auxiliary pulleys guiding the wire saw to allow the wire saw to contact only the tunnel surface between adjacent perforations during pivoting. In paragraph 1,
Further comprising a drill feed member connected to the drill drill to change a position of the drill drill. The method according to claim 1,
Wherein the jig member further comprises a jetting portion for spraying water to cool frictional heat between the wire saw and the rock mass. A wire saw having a fluid-like wire-shaped metal line and a cutting portion mounted on an outer circumferential surface of the metal line, an advanced pulley rotatably connected and supporting a tip portion of the wire saw, and a radially- A jig transfer member connected to the jig members to adjust a position and a direction of the jig members, and a jig transferring member coupled to a rear portion of the wire saw, A drive pulley for pulling and rotating the rear portion of the wire saw to transmit a rotational force to the rock portion and a tip portion of the wire saw; a perforation drill for forming the perforation; and a jig transferring member, A tunnel excavation method using a tunnel excavation equipment including a control member for controlling a drill,
Forming two adjacent perforations using the perforation drill;
Entering the jig members into the perforations;
Fixing the jig members within the perforations;
Moving the drive pulley backward to bring a portion of the wire saw disposed between the perforations into close contact with a tunnel surface between the perforations;
Rotating the drive pulley to apply a rotational force to the wire saw to form a buffer line between the perforations; And
And moving the drive pulley backward as the damping line is pivoted so that the wire saw is in close contact with the tunnel surface. 9. The method of claim 8,
Wherein the step of inserting the jig members into the perforations comprises determining the position of the jig members using position data of the step of forming the two perforations. 9. The method of claim 8,
And water is injected into the perforation through an injection part formed in the jig member. 11. The method of claim 10,
Wherein the forming of the two perforations comprises forming the perforations to be slightly upwardly inclined so that the injected water is smoothly discharged.

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