KR102130541B1 - The Multiple Artificial Joints Formation Method using Wire Saw and Wire Connection Device of Wire Saw and The Tunnel Excavation Method using the same - Google Patents

Abstract

The present invention relates to an artificial joint formation method using a wire saw and a tunnel excavation method including the same. A purpose is to reduce the spread of blasting vibrations, which are produced by tunnel excavation blasting, to security buildings existing around a tunnel by securing a free surface through an artificial joint formed in a part of the tunnel through a wire saw, and to improve economic feasibility and efficiency by cutting a target through only a wire installed in a boring hole, which is the same as an existing blasting hole, without using an operation method by the insertion of a large jig and work in which a large diameter core is bored for the operation of the wire. According to the present invention, the artificial joint formation method using a wire saw includes: a first step of forming a through hole in an excavation surface of a cutting target for tunnel excavation such that both sides are connected to the outside of the exposed surface; a second step of installing a towing rope through the through hole; a third step of connecting a wire of a wire saw with one side of the towing rope outside one opening part of the through hole, and then, towing the towing rope the other way around and withdrawing the wire to the other opening part of the through hole, and then, connecting the wire to a pulley, thereby making the wire surround the cutting target for the formation of an artificial joint; and a fourth step of forming the artificial joint by cutting the cutting target through the operation of the wire.

Description

The method of forming an artificial joint using a wire saw and the wire installation device and a tunnel excavation method of the wire saw for the same {The Multiple Artificial Joints Formation Method using Wire Saw and Wire Connection Device of Wire Saw and The Tunnel Excavation Method using the same}

The present invention relates to a method for forming an artificial joint when excavating a tunnel, and more specifically, to secure a free surface by forming an artificial joint using a wire saw, to secure the blast vibration generated during tunnel excavation using blasting around the excavation tunnel. The present invention relates to a method for forming an artificial joint using a wire saw, which reduces propagation to an object, and improves crushing degree and excavation efficiency, and a tunnel excavation method including the same.

This part provides background information related to the contents of the present application, but is not necessarily prior art.

Since the excavation of tunnels in urban areas has a great influence on the surrounding environment, the application of general blasting is limited, and measures to reduce noise and vibration are required. As a countermeasure to reduce noise and vibration applied to tunnel excavation in urban areas, smooth blasting and pre-splitting (Pre- TBM (Tunnel Boring Machine) method, which is an excavation method that simultaneously excavates the tunnel front surface using controlled blasting and automated machines such as splitting, cushion blasting, and line drilling, is applied.

However, the control blasting as described above exhibits a problem in that the excavation unit price increases due to the partial blasting of the excavation section, a decrease in the excitation length, an increase in the number of perforations, and an increase in the amount of primers. In addition, the TBM method has the disadvantages of poor applicability to changes in rock quality, limited excavation routes, high cost of mechanical equipment, and low economic efficiency, which requires excessive equipment costs such as high wiring to operate it.

In recent years, in the tunnel blasting, a partial free surface is formed by using mechanical equipment such as a wire saw on the excavation surface, and in parallel with control blasting, the blasting vibration is reduced, and the free surface blasting method for increasing the crushing degree and excavation efficiency is partially It is being applied at home and abroad.

The wire saw cutting method, which is being applied to the existing tunnel, is a method of cutting from the front surface of a film surface using a jig device, a pulley, and a guide pulley as a reverse hit method.

380mm 이상의 코어(hole) 천공이 필요하다. 또한, 절삭 시 발생하는 암분과 슬러지로 인해 지그장치 하부 풀리가 파단 될 수 있으며, 지그의 설치로 인한 장력이 절삭면에 동일하게 작용하지 않기 때문에 채석장 등에서 적용하는 감쌈방법에 비해 절삭효율이 35~40% 감소하는 문제점을 보인다.As shown in FIG. 7, the reverse hitting method requires a jig device and a pulley of various sizes according to the cutting depth, and for example, a jig device and a pulley can be inserted up to the cutting depth.

Hole drilling of over 380mm is required. In addition, the pulley at the bottom of the jig device may break due to the sludge and sludge generated during cutting, and since the tension caused by the installation of the jig does not act on the cutting surface, the cutting efficiency is 35~ compared to the wrapping method applied in the quarry. It shows a 40% decrease.

In addition, the degree of crushing of rocks by blasting has a direct effect on the subsequent processes leading to loading, transportation and secondary crushing, and the excavation efficiency has a direct effect on the construction period. It is an essential factor to be considered in securing overall economic feasibility.

Registration No. 10-1508205, No. 10-1594882, No. 10-1649328, No. 10-1634119 have a device and cutting device for cutting a rock wall and tunnel excavation surface using a back saw method of a wire saw For the method, Patent No. 10-1774439 is applied to the blasting excavation of the wire saw, but the cutting method of the applied wire saw has the above-mentioned problem as a reverse hit method.

Registered Patent No. 10-1508205 Registered Patent No. 10-1594882 Registered Patent No. 10-1649328 Registered Patent No. 10-1634119 Patent No. 10-1774439

The present invention is to solve the problems as described above, by using a wire saw to form an artificial joint on a portion of the tunnel excavation surface to secure a free surface by artificial insult, the blasting vibration generated by the tunnel excavation blasting around the tunnel Reducing the propagation of existing security objects, the operation of drilling a large-diameter core for the driving of wires and the use of a wire through a small-diameter (same as the blasting hole) without using a driving method by inserting a large jig. It is an object of the present invention to provide a method for forming an artificial joint using a wire saw that can be cut only by installation and a tunnel excavation method including the same.

A method of forming an artificial joint using a wire saw according to the present invention includes: a first step of forming a through hole so that both sides communicate with the outside of the exposed surface on an excavation surface of a cutting object for tunnel excavation; A second step of installing a traction rope through the through hole; The wire is connected to the pulley after connecting the wire of the wire saw to one side of the towing rope outside the opening of one side of the through hole, pulling the towing rope to the other side, drawing the wire to the other opening of the through hole, and connecting it to the pulley. A third step of enclosing a cutting object for forming an artificial joint; And a fourth step of cutting a cutting object by driving the wire to form an artificial joint.

According to a method for forming an artificial joint using a wire saw according to the present invention and a tunnel excavation method including the same, multiple artificial joints are formed in a tunnel portion where charge propagation and vibration propagation is to be blocked due to the presence of a concentrated heart and a security object By significantly reducing the blasting vibration generated during tunnel excavation, and forming artificial joints by varying the size and number of various artificial joints in consideration of the blasting vibration allowance of the location of the security object in the region of the heart where the charge concentration is high, Compared to the currently applied tunnel blasting vibration reduction technology, a high blasting vibration reduction effect can be expected, and in particular, only a small diameter (the same as a blasting hole) through hole can be drilled in the object to be cut and only a wire is installed in the hole to cut it. Since it is very easy to form joints, it is economical and shortens the air. That is, since the conventional large-diameter core drilling equipment and its work are not required, there is an effect of reducing construction cost and improving cutting efficiency.

In addition, due to the multiple artificial incisions formed, the generation of lumps is suppressed and the crushing efficiency is controlled by controlling the crushed rocks to a certain size or less to reduce the additional secondary sub-blasting and breaker work that separates large lumps when loading and transporting crushed rocks. The work efficiency can be improved and the economic efficiency can be secured, and the formed multiple artificial joints can act as an artificial free surface to shorten the disclosure period by increasing the excavation rate due to securing the blasting efficiency.

1 and 2 are each a flow chart and a conceptual view showing an artificial joint forming process using a wire saw according to the present invention.
3 is a view showing an example in which the wire of the wire saw is installed on the cutting target to form an artificial joint using the wire saw according to the present invention.
Figure 4 is an illustration of a tunnel blasting excavation pattern showing an example of artificial insulator formed according to the method of forming an artificial insulator using a wire saw according to the present invention.
Figure 5 is an exemplary view of a traction means applied for forming an artificial joint using a wire saw according to the present invention.
Figure 6 is an installation process of the traction rope by the traction means of Figure 3;
7 is a conceptual view showing cutting by a conventional wire saw.

In the following description of the present invention, when it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or practice. Therefore, the definition should be made based on the contents throughout this specification.

As shown in Figure 1, the method of forming an artificial joint using a wire saw according to the present invention is formed through a process of forming an artificial joint by forming a through hole-installing a traction rope-installing a wire traction of a wire saw-driving a wire saw The specific method of the process and the device accordingly are as follows.

1. Through hole formation.

A through hole 1 is formed inside the cutting object. This through hole 1 is for installing the wire 21 of the wire saw 20, in particular to install the wire 21 so as to surround the cutting object.

The through hole 1 is a form in which the first passage 1-1 and the second passage 1-2 are connected, and is in the form of "V" when viewed in a plane.

The form of the through hole 1 is a form for easily installing the wire 21, the first and second passages 1-1 and 1-2 are respectively straight and the outside is the outside of the cutting object. And the inside of the opposite side is configured to communicate with each other within the cutting object.

The through hole 1 has the advantage of not using any additional equipment by using a drilling device that drills a blasting hole (such as a firearmer, an armamenter, etc.) for excavating a general tunnel, that is, the diameter is formed as the diameter of the blasting hole .

After forming the through hole 1, a procedure is needed to check whether the first and second passages 1-1 and 1-2 communicate with each other. Whether the penetration of the through hole (1) is perforated by using the drilling equipment used for perforation (1), after injecting water and air from one side, check the penetration through the opposite side, and check whether the penetration is excellent. There is a method for confirming whether or not the penetration is performed by using light or not.

2. Install the towing rope.

Due to the material and structural characteristics of the wire 21 of the wire saw 20, it is difficult to directly install the wire 21 in the through hole 1, and the wire 21 of the wire saw 20 is installed in the through hole 1 The towing rope 10 is selected as a method for doing so.

The traction rope 10 is inserted into one side of the through hole 1 and then pushed to the other side so as to be pulled out to the other side of the through hole 1, and thus, the traction rope 10 is the first passage (1-1) It should be made of a material or structure that can be turned to the second passage (1-2), for example, a rope made of PE.

3. Wire traction installation of wire saw.

The other side (right side of the drawing) of the towing rope 10 protrudes outside the cutting object, and connects (bundles, etc.) the end of the wire 21 of the wire saw 20 to the other side.

When the wire 21 is tow the wire 21 by winding or pulling one side (the left side of the drawing) of the towing rope 10 from the opposite side of the place where the wire 21 is connected, the wire 21 is the first passage (1-2)- It is towed along the first passage (1-1) and is wired in the first and second passages (1-1, 1-2).

At this time, the wire 21 passes through the guide pulley 22, and is connected to the wire saw 20.

The guide pulley 22 is fixedly installed with an anchor or the like that is settled on the exposed surface of the cutting object for the operation of the wire 21.

4. Artificial joint formation by driving wire saw.

The artificial cutting 2 is formed in the cutting object by cutting the cutting object (rock) by driving the wire 21 by the rotational movement of the main pulley of the wire saw 20.

Through the artificial joint 2 formed as described above, a free surface is secured in the cutting object.

5 and 6 show a preferred embodiment of the traction means.

The towing means is a towing rope 10, a towing rope accommodating pipe 11 for accommodating the towing rope 10, and a towing rope for retracting the towing rope 10 accommodated in the towing rope accommodating pipe 11 as a towing rope 12 ), the first and second magnets 13 and 14 for transporting the towing rope 10 accommodated in the towing rope receiving tube 11 from the towing rope receiving tube 11 are included.

The towing rope receiving tube 11 is in the form of a tube into which the towing rope 10 is inserted and wired.

The towing rope receiving pipe 11 is made of an inner diameter larger than the outer diameter of the towing rope 10 so that the towing rope 10 moves smoothly.

The towing rope receiving pipe 11 is also capable of protecting the towing rope 10 in the case of a tubular type, and the towing rope 10 is smoothly moved by securing a larger space than the outer diameter of the towing rope 10. There is an advantage, that is, a structure other than a tubular structure is also included under the premise that the towing rope 10 is movable.

In this structure, a support member is configured to support the towing rope 10.

The support member is, for example, a bolt 15 that is screwed to the towing rope receiving tube 11.

The number of bolts 15 is preferably three to four (one can also have a ring through which the towing rope 10 passes) is installed at regular intervals with each other along the circumference of the towing rope 10, each Since the end is supported on the circumferential surface of the towing rope 10, the towing rope 10 is maintained to be spaced apart from the inner circumferential surface of the towing rope receiving tube 11 and a first magnet having an outer diameter larger than that of the towing rope 10 It also prevents (13) from escaping into the interior.

Since the bolt 15 can adjust the distance from the towing rope 10 by a screw fastening method, it is also possible to use the towing rope 10 of various outer diameters.

The support member may be a ring provided with a hole through which the towing rope 10 passes instead of the bolt 15.

Inside the towing rope receiving pipe 11, the roller may be installed along the moving path of the towing rope 10 so that the towing rope 10 moves with less frictional resistance, and the towing rope receiving tube 11 can be replaced by replacing the roller. ) Protruding toward the center of the inner circumferential surface than the inner circumferential surface, it is also possible to configure the protrusions 10 in point contact with the traction rope.

The first magnet 13 is fixed to the end of the towing rope 10, and is installed at the end of the towing rope receiving tube 11 (the part facing the inside of the through hole 1), and the second magnet 14 is It is preferable to protrude to the outside of the towing rope receiving tube 11 to be attached.

The first magnet 13 is preferably an outer diameter larger than the outer diameter of the towing rope 10, and since the towing rope 10 is supported by the fixed bolt 15 and is movable, the first magnet 13 is the second magnet ( It is possible to move toward the second magnet 14 by magnetic force when it comes close to 14).

The first and second magnets 13 and 14 are advantageous in that they are attached to each other by a magnetic force without the operator's manipulation to connect the rope traction tube 12 and the traction rope 10, and in another way, the rope traction tube 12 It is also possible to configure the tongs clamping the end of the towing rope (10).

That is, the first and second magnets 13 and 14 are preferred examples of the clamping means.

The rope towing pipe 12 is installed in a place where the towing rope receiving pipe 11 is not installed in the through hole, and functions to pull the towing rope 10 accommodated in the towing rope receiving pipe 11 and is not limited to the pipe. .

The second magnet 14 is fixedly installed at the end of the rope towing tube 12 and moves together with the rope towing tube 12. When the rope towing tube 12 is moved by being attached to the first magnet 13 by magnetic force The first magnet 13 and the towing rope 10 fixed thereto are moved.

The second magnet 14 is preferably made of a larger cross-sectional area than the first magnet 13 so that the first magnet 13 and the first magnet 13 can be attached quickly and maintain the attachment state.

The first and second magnets 13 and 14 are made of different polarities so as to be attached to each other by magnetic force, and it is also possible to use only one magnet in another way and the rest made of iron.

The towing rope receiving pipe 11 and the rope towing pipe 12 may be connected to two or more pipes (screw fastening or coupling) to be shared with various specifications of the through hole 1.

The installation process of the towing rope using the above towing means is as follows.

As shown in FIG. 6, the rope towing pipe 12 is inserted into the first passage 1-1 and the towing rope receiving pipe 11 is inserted into the opposite second passage 1-2.

In this process, the first and second magnets 13 and 14 are attached to each other by magnetic force, so that the rope traction tube 12 and the traction rope 10 are connected to each other.

When the rope towing pipe 12 without the towing rope 10 is pulled out of the first passage 1-1, the towing rope 10 is pulled together with the rope towing pipe 11, and thus the towing rope ( 10) is wired in the first passage (1-1).

The towing rope 10 is sufficiently moved out of the first passageway 1-1, and the towing rope receiving tube 11 remaining in the second passageway 1-2 is taken out.

Thus, only the towing rope 10 is installed in the through hole 1.

Here, the installation position of the towing rope receiving pipe 11 and the rope towing pipe 12 may be reversed.

Figure 4 shows an example of an artificial joint formed by the present invention, the artificial joint can be formed in any place where a free surface is required according to the pattern of tunnel blasting excavation, such as the heart portion and the surroundings. It is freely determined depending on the rock conditions.

The tunnel excavation method according to the present invention comprises a process of securing a free surface by forming an artificial joint-blasting a blast and charging a gunpowder-blasting.

1. Secure free surface by forming artificial joints.

Artificial joint formation, as described above, is formed through the process of traction of the wire 21 after formation of the through hole 1-installation of the traction rope 10-connection of the wire 21 of the traction rope 10 and the wire saw 20 , The specific method is the same as described above.

2. Blasting.

For example, as shown in FIG. 4, the blasting balls (various blasting holes such as a combination of a charging hole and a combination of a charging hole and an arming hole) are formed in a pattern for optimal blasting, and after charging the gunpowder, the color is applied, Blasts through ignition. When the blasting hole adjacent to the artificial joint 2 is blasted, propagation through the free surface by the artificial joint 2 is reduced.

Since the present invention secures a free surface by artificial joint 2, a blasting pattern suitable for this free surface is possible, as well as a blasting pattern of an existing tunnel blasting can be applied in the same way. It is possible to secure constructability.

1: through hole,
1-1: 1st passage, 1-2: 2nd passage
2: artificial joint,
10: towing rope, 11: towing rope receiving tube
12: rope towing tube, 13,14: first and second magnets
15: bolt,
20: wire saw, 21: wire
22: guide pulley,

Claims (6)

A first step of forming a through hole so that both sides communicate with the outside of the exposed surface in the excavation surface of the cutting target for tunnel excavation;
A second step of installing a traction rope through the through hole;
The wire is connected to the pulley after connecting the wire of the wire saw to one side of the towing rope outside the opening of one side of the through hole, pulling the towing rope to the other side, drawing the wire to the other opening of the through hole, and connecting it to the pulley. A third step of enclosing a cutting object for forming an artificial joint;
A fourth step of cutting the cutting object by driving the wire to form an artificial joint,
The first step forms a through hole in a form in which the first and second passages inclined in a direction to be collected while going inward when viewed from a plane on the cutting object are connected to each other, and water and air are formed in one opening of the through hole. After irradiating at least one of the and light and verifying the penetration of the through hole by checking in the opening on the opposite side,
In the third step, the traction rope is inserted in the opening of one side of the through-hole, and a traction rope receiving pipe for centrally supporting the traction rope is inserted through a plurality of bolts, but is installed at the end of the traction rope. Step 3-1 of preparing and fixing the first magnet so as to protrude to the outside of the towing rope receiving tube, and inserting and installing the towing rope receiving tube from one side of an opening of the through hole toward the inside of the through hole,
A traction rope traction member provided with a second magnet having a second cross-sectional area larger than the first magnet is attached to an end of the traction rope receiving tube so that the first magnet of the traction rope receiving tube is attached to the inside of the through hole at the other opening of the through hole. Step 3-2 of installing and attaching the towing rope and the rope towing member accommodated in the towing rope receiving tube by the magnetic force of the first and second magnets,
Step 3-3 of drawing the rope towing pipe out of the through hole and pulling the towing rope together with the first and second magnets to the outside of the through hole,
And a third or fourth step of drawing out the tow rope receiving pipe remaining on one side of the through hole to the outside of the through hole, using a wire saw. delete delete delete By installing the wires of the wire saws in the through-holes of the inclined shape which communicate with each other from the inside while there are openings on both sides in the cutting object.
A towing rope which is inserted into an opening on one side of the openings on both sides of the through hole and protrudes to the opening on the other side, and then the wire of the wire saw is connected;
It includes a traction means for pulling the traction rope from the opening of one side so that the wire of the wire saw is towed along the through hole by the traction rope,
The towing means is formed in the traction rope receiving pipe, the traction rope receiving pipe inserted in one side of the through-hole, the traction rope is movably accommodated therein, and the traction rope is formed at regular intervals along the circumferential direction. A plurality of bolts arranged in the center of the rope receiving tube, a first magnet made of an outer diameter larger than the outer diameter of the towing rope and coupled to protrude to the outside of the towing rope receiving tube to the end of the towing rope, the first to the end It is formed with a larger cross-sectional area than a magnet, and is provided with a second magnet that is adsorbed to the first magnet. It is inserted from the other side of the through hole and includes a rope towing tube that draws out the towing rope while falling to the other side of the through hole. Wire installation device of the wire saw made. A first step of forming an artificial joint on a cutting target by the artificial joint forming method using the wire saw according to claim 1;
Tunnel excavation including a method of forming an artificial joint using a wire saw, comprising a second step of drilling a blasting hole for excavating a tunnel to the cutting target, and then exposing the blasting hole after charging a gunpowder in one or more blasting holes. Method.

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