KR100256900B1 - Moving type drilling apparatus for tunnel - Google Patents

Abstract

PURPOSE: A tunnel boring machine(TBM) is provided to reduce boring time and cost by boring on inner wall face of excavated tunnel with a regular angle and interval. CONSTITUTION: A body frame(1) composed of square fixing frames contains four wheels(2) to move and four multi-stage cylinders(4) on an extend member(3). The multi-stage cylinders engaged each other by a hydraulic hose adjust horizon by changing length to settle the body frame on a floor face of a tunnel hole. Moreover, the multi-stage cylinder adjusts height by driving of a cylinder control valve(6) to settle the body frame on the floor face of the tunnel hole. The tunnel face is bored to horizontal direction by moving a shell drill(12a) of a drifter(12) while a guide shell(11) is on horizontal position. The drifter moves to digging direction of the tunnel by a guide member(14) front and back straight moving according to a drive motor(15) to bore the tunnel wall face with a specific interval. Thereby, the boring work hanging a support member is operated by a machine to bore with a correct angle.

Description

Mobile drilling device for tunnel

The present invention relates to a mobile drilling apparatus for drilling to install a support member as a finishing material on a tunnel wall surface in which excavation is completed by using a tunnel boring machine (TBM) equipment, in particular, a boom lift cylinder The present invention relates to a mobile drilling device for a tunnel that can be punched uniformly and quickly in the drilling direction while forming a right angle with the tunnel wall.

The construction procedure of drilling blasting method in general rock tunnel construction is as follows.

First, in order to obtain a free surface effect by a pilot tunnel, a blasting delay sequence (hereinafter, referred to as a delayed sequence) that sequentially blasts from a portion close to the free surface is first selected from a portion close to the pilot tunnel. To the periphery, to drill the excavation site of a certain length, several workers use a leg drill or jumbo drill used for rock bolt drilling or blasting drilling. Drill a blast hole in the upper half section.

The next step is to determine the sequence of the outmost line drilling portion of the pilot tunnel in the order of the bottom, the bottom, and the ceiling, like the pilot tunnel, to charge the gunpowder. Here, in the blasting portion of the line drilling, a predetermined precision explosive is charged in consideration of the loosening region of the rock due to the excavation and blasting.

When the charge is completed, the blasting is carried out in the planned sequential order, and the buckles generated after the blasting are processed. The next step is to drill a predetermined length again on the shear surface, and the above process is repeatedly performed to carry out a series of excavation work.

In addition, another drilling blasting method employs an excavation machine called a Tunnel Boring Machine (TBM), which is much faster than the conventional excavation method. A method of drilling a tunnel by drilling blasting has been proposed, and the method using the TBM has a constant circular cross-sectional shape and is limited in size. The TBM / NATM combination method of NATM (New Austrian Tunnelling Method) is most commonly applied in tunnel construction in Korea.

As described above, in the tunnel blasting method consisting of perforation-filling-blasting-blocking, as a finishing process after finishing the construction, a process of suspending the supporting member to prevent the falling of the bucket due to the occurrence of ground displacement of the tunnel is carried out. .

The finishing process is a process in which a number of workers usually drills at predetermined intervals in a direction perpendicular to the tunnel inner wall surface using a predetermined drill, and then attaches a hook or the like to the perforated portion and hangs a support member such as marble. Go through

Here, in the related art, since the tunnel drilling process is completed and the operator directly performs the drilling on the tunnel surface, the drilling work is cumbersome and takes a lot of work time, and there is a problem in that uniform drilling cannot be obtained.

Accordingly, the present invention has been made in order to solve the above problems, by providing a drilling at a constant angle and uniform intervals on the inner wall surface of the excavated tunnel to provide a mobile drilling factory for the tunnel, reducing the drilling time and construction costs Has its purpose.

1 is a side view showing the configuration of an embodiment of a mobile drilling device for a tunnel according to the present invention.

Figure 2 is a front view showing the overall operating state of the mobile drilling device for a tunnel according to the present invention.

Figure 3a is a cross-sectional view showing the configuration of the guide member for guiding the back and forth movement of the link that is the main part of the present invention.

Figure 3b is another embodiment of the device for guiding the back and forth movement of the link which is the main part of the present invention.

4 is a working state of the link for lifting and lowering the boom lift cylinder.

* Explanation of symbols for main parts of the drawings

1: body frame 2: wheels

3: extension member 4: multistage cylinder

5: Hydraulic Hose 6: Cylinder Control Valve

7: vertical weight 10: tunnel ball

11: guide cell 12: drift

13: angle gauge 14: guide member

15: drive motor 16: power transmission means

21: Link 22: Lifting Cylinder

23 turntable 24 boom lift cylinder

25 level

The present invention for achieving the above object is, a plurality of wheels mounted on a predetermined portion to the movable body frame; Means for perforating in a direction perpendicular to the tunnel wall surface while being stretched and contracted at a predetermined angle on the body frame; Means mounted to the main frame to guide the linear movement in the drilling direction to the direct drilling means; Means for adjusting the lifting height of the direct drilling means mounted on the guide means; And a rotation angle shifting means for rotating the direct drilling means at a predetermined angle on the upper part of the lifting height adjusting means so as to drill according to a given angle.

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

The mobile jikjang factory for tunnels according to the present invention is embodied to be perforated at regular intervals on the tunnel wall surface to perform the finishing process of the excavated tunnel, as shown in Figures 1 and 2 Four wheels 2 are mounted on the main body frame 1 so as to be movable, and four multi-stage cylinders 4 are mounted on the extension member 3 extending to the rectangular frame forming the main body frame 1. do. The multi-stage cylinder (4) has a function of leveling the body frame (1) is variable in length so as to be horizontally seated on the bottom of the tunnel hole, the four multi-stage cylinder (4) by the hydraulic hose (5) The upper and lower heights are respectively adjusted by driving of the cylinder control valve 6 mounted on the hydraulic hose 5.

Therefore, the main frame 1 may be firmly seated on the bottom surface of the uneven tunnel hole due to the adjustment of the length of the multi-stage cylinder 4.

In addition, the upper surface of the main body frame (1) is equipped with a means for direct drilling in the direction perpendicular to the tunnel wall surface while being displaced at a predetermined angle and stretched and contracted, wherein the direct drilling means is uniformly drilled at a predetermined angle on the tunnel wall surface A shell drill 12a is provided at one end thereof to allow the drift 12 to be driven to contract and extend its length, and a guide mounted at the bottom of the drift 12 to guide the movement thereof. It consists of a cell 11 and an angle gauge 13 mounted on a predetermined portion of the guide cell 11 and measuring the angular displacement thereof.

In addition, a guide member 14 for guiding the movement path is mounted on the upper surface of the main body frame 1 so that the guide cell 11 can be moved forward and backward, that is, in the excavation direction of the tunnel hole. One side of the 14 is mounted with a drive motor 15 that provides a left and right movement force.

At this time, the shaft of the drive motor 15 is provided with a power transmission means for transmitting power by converting its rotational force into a linear reciprocating motion.

The power transmission means in this embodiment forms a rack 15a on one surface of the groove formed in the bottom of the guide member 14, as shown in Figure 3a, and the pinion (axis) of the drive motor 15 The structure formed by mounting 15a) is shown, and the present invention is not limited thereto, and various modifications can be made by those skilled in the art.

For example, as shown in FIG. 3B, a limit cylinder providing straight movement force to the guide rail 51, the guide piece 52, and the guide piece 52 so that the guide cell 11 can be moved back and forth ( 53).

On the upper surface of the guide member 14, as shown in FIGS. 1 and 4, the upper and lower heights of the guide cell 11 are adjusted, and a link 21 having a horizontal table 21a is mounted thereon. The link 21 has a built-in lifting cylinder 22 that provides its lifting power.

The turntable 23 is mounted on the horizontal table 21a of the link 21 to allow the guide cell 11 to be rotated 180 ° in the horizontal direction. The turntable 23 includes a lifting cylinder and a turning motor, and the guide cell 11 is driven to rotate 180 ° horizontally in the first quadrant after drilling the tunnel hole in the second quadrant.

In addition, between the turntable 23 and the guide cell 11, a boom lift cylinder 24 for displacing the rotation angle of the guide cell 11 is mounted so that the angle of the drifter 12 is to be drilled. The guide cell 11 is rotated by the angle guided by the angle gauge 13.

On the other hand, at the predetermined position of the body portion of the guide cell 11 is provided with a level gauge 25 so that it is possible to check whether the main body frame 1 is seated in a horizontal position, the inspection by the level gauge 25 By using the four cylinder control valve (6) as a reference to adjust the height of the three-stage cylinder (4) to be able to level the body frame (1).

Meanwhile, a center weight is displayed on the bottom surface of the tunnel hole, and a vertical weight 7 is provided at the center of the body frame so that the center of the body frame 1 coincides with the center.

Referring to Figure 2 the operational state of the present invention configured as described above is as follows.

The center position is displayed on the bottom surface of the excavated tunnel hole (10). Then, the fabric mill is moved to match the center of the bottom surface of the tunnel hole 10, and then the vertical weight 7 mounted at the center of the main frame 1 is lowered to fit the center position of the bottom surface.

Up and down height is adjusted so that the main body frame 1 is in a horizontal state while extending and contracting four multi-stage cylinders 4 installed in each of the extension members 3 of the main body frame 1. At this time, while adjusting the height of each three-stage cylinder (4) with the cylinder control valve (6) while looking at the horizontal system 25 mounted on the body portion of the guide cell 11 to level the body frame (1) Secure it by seating on the bottom of tunnel hole.

In addition, the boom lift cylinder 24 is placed in a horizontal position so that the wall of the tunnel hole 10 to be drilled by the machine and the cell drill 12a are perpendicular to each other. In this case, the guide cell 11 is positioned at the center line of the tunnel hole. By driving the lifting cylinder 22 to adjust the horizontal height of the) to adjust the horizontal position of the horizontal table (21a) and the link (21).

In the state in which the guide cell 11 is placed in a horizontal position, the cell drill 12a of the drifter 12 is moved straight to drill a hole in the tunnel wall in the horizontal direction. The drifter 12 moves in the tunneling direction of the tunnel by the moving guide member 14, and performs drilling at predetermined intervals.

When the drift 12 moves to the movement section allowed by the guide member 14, the drilling is completed, and the turntable 23 on the guide member 14 is moved to the initial home position. Then, the boom lift cylinder 24 for displacing the rotation angle of the guide cell 11 is driven to ascend and rotate the guide cell 11 to a given angle by an angle guided by the angle gauge 13, and a drifter The cell drill 12a of (12) is moved straight and the hole is drilled through the tunnel wall surface as described above.

After the perforation of the guide cell 11 to the 90 ° direction, that is, to the vertical direction according to the above operation, the turntable 21 mounted on the horizontal table 21a is driven to drive the guide cell ( 11) Rotate 180 ° to the first quadrant side. Then, the drilling is performed through the same operation as described above.

When the first and second quadrants of the tunnel hole 10 are finished, the third and fourth quadrants are drilled. At this time, the tunnel hole wall surface of the third and fourth quadrants is formed in a linear direction so that the guide is placed at a horizontal position of 180 °. The cell 11 is positioned to a position for puncturing while the link 21 shrinks. Then, the cell drill 12a of the drifter 12 is moved to carry out drilling. When the drilling of the three quadrants is completed, the guide cell 11 is rotated 180 degrees toward the four quadrants by driving the turntable 21. After the last section is carried out the drilling of the tunnel hole 10 wall surface.

The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

As described above, according to the present invention, as the finishing process of the excavated tunnel, the drilling operation for hanging the support member is performed by mechanical driving instead of manual operation, so that the drilling angle and the drilling position can be precisely and uniformly adjusted to the correct angle. Perforation is possible. In addition, the operator can perform precise driving operation without listening to the detailed driving training. The drilling can be performed regardless of the tunnel size, and the drilling time can be shortened, reducing the air and reducing the construction cost. Have

Claims (11)

A main frame having a plurality of wheels mounted on a predetermined portion to enable movement; Means for perforating in a direction perpendicular to the tunnel wall surface while being stretched and contracted at a predetermined angle on the body frame; Means mounted to the main frame to guide the linear movement in the drilling direction to the direct drilling means; Means for adjusting the lifting height of the direct drilling means mounted on the guide means; And rotation angle displacement means for rotating the direct drilling means by a predetermined angle in the upper portion of the elevating height adjusting means so that the drilling can be performed according to a given angle. The mobile direct drilling device for a tunnel according to claim 1, further comprising a variable length member mounted on a wheel shaft extension line of the main body frame to horizontally seat the main body frame on the bottom surface of the tunnel hole. The movable direct boring device of claim 2, wherein the length variable member includes a multi-stage cylinder for adjusting the height of the main body frame, and provides a hydraulic pressure to the multi-stage cylinder and controls a lift drive force thereof. According to any one of claims 1 to 3, The direct drilling means is driven so that the length is contracted and extended, the cell drill is provided at one end drift to drill the tunnel wall surface while reciprocating; Mobile drilling device for a tunnel comprising a guide cell for guiding the movement of the drifter. A guide member according to any one of claims 1 to 3, wherein the guide means comprises: a guide member having a longitudinal groove formed at a bottom thereof; A drive motor providing a rotational force to the guide member; And a power transmission means for converting and transmitting the rotational force of the drive motor into a linear movement force to the guide member. The movable drilling apparatus of claim 5, wherein the power transmission means comprises a rack formed on one surface of the groove of the guide member, and a pinion mounted on the shaft of the driving motor and engaged with the rack. According to any one of claims 1 to 3, The lifting height adjusting means is mounted on the upper surface of the guide means, the link is provided with a horizontal table on the upper surface; And a lifting cylinder for providing a lift driving force to the link. According to claim 4, The rotation angle displacement means is a lifting table with a lifting cylinder and a turning motor is built in to provide a horizontal rotational force to the guide cell, and mounted on the turntable while varying the length of the hoisting guide cell lifting force And a mobile drilling device for a tunnel comprising a boom lift cylinder providing a rotational displacement force. The movable direct boring device for a tunnel according to claim 8, further comprising an angle gauge mounted on a predetermined portion of the boom lift cylinder to measure an angular displacement according to the rotation of the rotation angle displacement cylinder. The mobile drilling device according to claim 1, further comprising a level gauge mounted on the direct drilling means to measure whether the main frame is kept horizontal to the tunnel hole bottom surface. The mobile drilling device of claim 1, further comprising a vertical weight mounted at the center of the main frame to adjust the center of the main frame to coincide with a work center of the bottom of the tunnel hole.

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