KR102543815B1 - Apparatus for excavating bedrock - Google Patents

Abstract

Disclosed is a water jet rock excavation device capable of preventing blasting noise and vibration and civil complaints caused therefrom during vertical rock excavation. The water jet rock excavation apparatus includes a horizontal guide rail rotatable at a certain angle, at least two water jet nozzle holders movable in the horizontal direction of the horizontal guide rail on the horizontal guide rail, and a cylindrical shape fastened to an end of the horizontal guide rail. Characterized in that it includes a guide rail.

Description

Water jet rock excavation {Apparatus for excavating bedrock}

The present invention relates to a rock excavation technology, and more particularly, to an excavation method capable of preventing blasting noise and vibration and civil complaints caused therefrom during vertical shaft rock excavation and improving excavation efficiency. It's about the device.

In order to construct a tunnel-type power tunnel during the underground project, it is inevitable to install TBM (Tunnel Boring Machine) equipment, input of materials and personnel, and installation of a vertical tunnel to secure a passage for maintenance during operation. Vertical conduits are mainly installed in downtown areas where the floating population and traffic volume are high and where shopping malls and residential areas are formed.

Due to the nature of the ground in Korea, the depth of the rock layer is low and the depth of power conduit installation is increasing recently (more than 40m), so rock excavation is essential for vertical conduit construction.

However, the blasting method has a low construction cost and a fast construction speed, but causes frequent civil complaints during construction in downtown areas due to high noise and vibration. On the other hand, the low-noise and low-vibration method, which can be regarded as an alternative to the blasting method, has a very high construction cost (about 5 times compared to blasting) and a long construction period (excavation speed of 0.2m/day). There are disadvantages that can cause loss of project cost.

In addition, although research is currently under way to introduce mechanical equipment to vertical shaft excavation, there is no existing vertical shaft excavation equipment capable of excavating medium-strength rock (150MPa or more).

1. Korea Patent Registration No. 10-1539740 (July 21, 2015)

The present invention has been proposed to solve the problems caused by the above background art, and water jet rock excavation that can prevent blasting noise and vibration and civil complaints caused by it during vertical rock excavation, increase rock excavation efficiency and shorten the period compared to existing methods. Its purpose is to provide a device.

In addition, another object of the present invention is to provide a waterjet rock excavation device that is applied when excavating a vertical hole in the ground of soft rock or higher having high rock strength and has a cutting function for cutting the excavated cross section into several pieces of rock fragments.

In addition, another object of the present invention is to provide a waterjet rock excavation device capable of cutting a segment blocking a main tunnel and a connection portion when constructing a vertical structure with a top-down segment lining.

In order to achieve the above object of the present invention, a water jet rock excavation apparatus capable of preventing blasting noise and vibration and civil complaints caused therefrom during vertical rock excavation is provided.

The water jet rock drilling device,

Horizontal guide rails rotatable at a certain angle;

at least two water jet nozzle holders movable in the horizontal direction of the horizontal guide rail on the horizontal guide rail; and

It characterized in that it comprises a; circumferential guide rail fastened to the end of the horizontal guide rail.

At this time, the predetermined angle is characterized in that -90 ° to +90 °.

In addition, the at least two water jet nozzle holders, the wheel moving in the horizontal direction; and a first actuator for driving the wheel.

In addition, the at least two water jet nozzle holders, nozzles moving in the vertical direction of the horizontal guide rail 110 for height adjustment; and a second actuator for driving the nozzle.

In addition, the nozzle is characterized in that a thread is formed on a part of the circumferential surface.

In addition, the end of the horizontal guide rail is characterized in that fastened to the circumferential guide rail so as to protrude a circumferential surface of the circumferential guide rail to a certain length.

In addition, it is characterized in that a fixed water jet nozzle holder is installed at the end of the horizontal guide rail.

In addition, a first length-adjustable connection part is connected to the side of the fixed water jet nozzle holder.

In addition, the connecting part may include a connecting rod having one end connected to the side surface of the fixed water jet nozzle holder.

At this time, an insertion groove is formed in the connecting rod, and a ball inserted into one of a plurality of first stopper holes formed at regular intervals for adjusting the first length on the inner surface of the end of the horizontal guide rail in the insertion groove and the It is characterized in that an elastic member for giving an elastic force to the ball is installed.

In addition, the water jet rock excavation apparatus may include a support frame attached to an upper surface of the circumferential guide rail and fixing and supporting the circumferential guide rail to a wall surface of the vertical sphere.

In addition, the support frame, the ring-shaped body; Four telescopic supports disposed at every 90° and capable of adjusting the second length; and four support shoes each connected to the four elastic supports and in close contact with the wall surface of the vertical sphere.

In addition, the four telescopic supports, one end of which is connected to the side of the four support shoes (shoe), the inner support bar; and an outer support bar having one end connected to the outer circumferential surface of the body and surrounding the outer surface of the inner support bar.

In addition, a through hole is formed in the inner support rod, and a plurality of second stopper holes formed at regular intervals to adjust the second length are formed on an outer circumferential surface of the outer support rod.

In addition, the through hole is characterized in that it is fixedly fastened to one of the plurality of second stopper holes by a bolting method.

In addition, it is characterized in that any one of rubber, plastic, and silicone is attached to the outer surface of the four support shoes (shoe).

In addition, the water jet rock excavation apparatus includes a first pulley gear installed on the horizontal guide rail so as to be rotatable at the predetermined angle; and a second pulley gear connected to the first pulley gear by a timing belt.

On the other hand, another embodiment of the present invention, a horizontal guide rail rotatable at a certain angle; at least two water jet nozzle holders movable in the horizontal direction of the horizontal guide rail on the horizontal guide rail; Circumferential guide rails fastened to the ends of the horizontal guide rails; a support frame attached to an upper surface of the circumferential guide rail and fixing and supporting the circumferential guide rail to both side wall surfaces of the vertical sphere; and a fixing frame assembled in a vertical line on an upper surface of the support frame and fixing the circumferential guide rail in parallel with one side wall of the vertical sphere.

At this time, the fixed frame, the vertical support disposed on the vertical line; and a first horizontal support and a second horizontal support having one end coupled to both ends of the vertical support and the other end contacting the one wall surface of the vertical sphere.

According to the present invention, it is possible to solve civil complaints (blasting method) due to noise and vibration according to the application of the existing method, prolonged road occupation due to air delay, and inconvenience caused therefrom (non-vibration and low noise method), and improve vertical excavation efficiency. .

In addition, another effect of the present invention is that when the rock excavation performance of the vertical shaft mechanical excavation equipment is supplemented, the domestic introduction time of the mechanical excavation equipment can be advanced.

1 is a conceptual diagram of a water jet rock excavation apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view of the water jet rock excavation apparatus shown in FIG. 1 .
3 is a plan view of the support frame shown in FIG. 1;
Figure 4 is a configuration block diagram for rotation of the horizontal guide rail shown in Figure 1.
5 is a block diagram illustrating the configuration of the water jet nozzle holder shown in FIG. 1;
6 is a conceptual diagram of vertical excavation using the waterjet rock excavation apparatus shown in FIG. 1 .
7 is an example of an excavation cross-section cutting pattern according to vertical excavation shown in FIG. 6 .
8 is a side view showing a concept of cutting a wall surface of a vertical sphere lining using a water jet rock excavation apparatus according to another embodiment of the present invention.
9 is a front view of the water jet rock excavation apparatus of FIG. 8 .

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, or substitutes included in the spirit and scope of the present invention.

In describing each figure, like reference numbers are used for like elements.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another.

For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The term "and/or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs.

Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art, and unless explicitly defined in this application, they should not be interpreted in ideal or excessively formal meanings. Should not be.

Hereinafter, a water jet rock excavation apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a conceptual diagram of a water jet rock excavation apparatus 100 according to an embodiment of the present invention. Referring to FIG. 1, the water jet rock excavation apparatus 100 includes a horizontal guide rail 110 rotatable at a certain angle, and at least two water jet nozzle holders 120-1,120 movable in a horizontal direction on the horizontal guide rail 110. -2, 120-3, 120-4), and cylindrical guide rails 140-1 and 140-2 to which both ends of the horizontal guide rail 110 are assembled.

The horizontal guide rail 110 rotates at an angle of -90° to +90°. In addition, first to fourth water jet nozzle holders 120-1, 120-2, 120-3, and 120-4 movable in the horizontal direction are installed on the horizontal guide rail 110. Of course, the first to fourth water jet nozzle holders 120-1, 120-2, 120-3, and 120-4 are composed of four, but may also be composed of two. Of course, it is possible to additionally install several in order to shorten construction time and/or increase cutting efficiency.

The first to fourth water jet nozzle holders 120 - 1 , 120 - 2 , 120 - 3 , and 120 - 4 are detachable from the horizontal guide rail 110 . In other words, the first to fourth water jet nozzle holders 120-1, 120-2, 120-3, and 120-4 have hollows (not shown), and the hollows (not shown) are inserted into the outer circumferential surface of the horizontal guide rail 110. Therefore, before assembling the horizontal guide rail 110 to the circumferential guide rails 140-1 and 140-2, insert the additional nozzle holder into the horizontal guide rail 110, and then install the horizontal guide rail 110 into the circumferential guide. It is inserted into the rails 140-1 and 140-2.

In addition, water jet nozzles 121 may be installed in the first to fourth water jet nozzle holders 120-1, 120-2, 120-3, and 120-4. The water jet nozzle 121 moves in a vertical direction for height adjustment based on the horizontal guide rail 110 . To this end, as shown in a partially enlarged view, a screw thread 121-2 is formed on one circumferential surface of the nozzle pipe 121-1. Of course, a hollow 121-3 is formed in the center so that water flows in through the hose 122. That is, the first to fourth water jet nozzle holders 120-1, 120-2, 120-3, and 120-4 are connected to the hose 122 to receive water. Hose 122 is connected to a motor pump (not shown). The hose 122 may be made of only one material, or may be made of a variety of materials. For example, it can be made by applying nylon, polyurethane, polyethylene, synthetic and natural rubber according to the environmental grade.

As the horizontal guide rail 110 rotates at an angle of -90° to +90°, the water jet nozzle 121 also rotates at an angle of -90° to +90°. Thus, the excavated surface is cut in a sector shape.

Both ends of the horizontal guide rail 110 are fastened with the circumferential guide rails 140-1 and 140-2. Of course, through-holes (not shown) are formed in the circumferential guide rails 140-1 and 140-2 for this purpose. That is, both ends of the horizontal guide rail 110 are fastened through the circumferential guide rails 140-1 and 140-2 through through-holes. Accordingly, both ends of the horizontal guide rails 110 may be extended to a certain length on the outer circumferential surfaces of the circumferential guide rails 140-1 and 140-2.

Therefore, the first and second fixed water jet nozzle holders 150-1 and 150-2 are attached to both ends of the horizontal guide rail 110 to perform outermost cutting according to the vertical digging diameter for each site.

In addition, a support frame 130 for fixing and supporting the circumferential guide rails 140-1 and 140-2 is formed on the upper surfaces of the circumferential guide rails 140-1 and 140-2. In other words, the lower surface of the support frame 130 is coupled to the upper surfaces of the circumferential guide rails 140-1 and 140-2. It is also possible to use an adhesive for coupling, and it is also possible to use a bolting method of nuts and bolts. Silicone, epoxy, ethylene-vinyl acetate-based, polyolefin-based, styrene block copolymer-based, polyamide-based, polyester-based, urethane-based, etc. may be used as the adhesive. Of course, it is also possible to integrally configure the circumferential guide rails 140-1 and 140-2 and the support frame 130.

The material of the support frame 130 may be engineering plastic, stainless steel, aluminum alloy, or the like.

FIG. 2 is a plan view of the water jet rock excavation apparatus 100 shown in FIG. 1 . Referring to FIG. 2 , the circumferential guide rail 240 is composed of an upper half guide rail 140-1 and a lower half guide rail 140-2. The upper half guide rail 140-1 and the lower half guide rail 140-2 may be integrally manufactured or may be separately manufactured and joined into one circumferential shape through welding.

Ends of the horizontal guide rail 110 are connected to the connecting parts 210-1 and 210-2. That is, the left end of the horizontal guide rail 110 is connected to the end of the first connection part 210-1, and the right end of the horizontal guide rail 110 is connected to one end of the second connection part 210-2. Of course, the other end of the first connection part 210-1 is connected to the first fixed water jet nozzle holder 150-1, and the other end of the second connection part 210-2 is connected to the second fixed water jet nozzle holder 150-2. connected with

The first and second connection parts 210-1 and 210-2 have a stopper structure. A partially enlarged view showing this is shown. In other words, stopper holes 232 are formed at regular intervals at the end of the horizontal guide rail 110, and a ball 260 partially inserted into the stopper hole 232 is inserted into the insertion groove 231 of the connecting rod 230 It is located on the upper surface of the elastic member 250 disposed on. The ball 260 is a spherical steel ball, and the elastic member 250 may be a spring, sponge, or rubber.

A stopper hole 232 is also formed on the opposite side, and both sides of the insertion groove 231 pass through, so that one ball may be configured at both ends of the elastic member 250, respectively. The stopper structure shown in FIG. 2 can be applied as long as it has a length-adjustable form as an example.

FIG. 3 is a plan view of the support frames 130-1 and 130-2 shown in FIG. Referring to FIG. 3, the support frames 130-1 and 130-2 include a ring-shaped body 310, elastic supports 321-1, 321-2, 321-3, and 321-4 disposed at 90° intervals, and elastic supports 321-1 and 321. -2,321-3,321-4) and includes support shoes (320-1,320-2,320-3,320-4) to prevent punching destruction of the support surface wall of the vertical sphere.

In other words, the first elastic support 321-1 is disposed at 0 °, the second elastic support 321-2 is disposed at 90 °, and the third elastic support 321-3 is disposed at 180 ° , the third elastic support 321-4 is disposed at 360°.

The first to fourth telescopic supports 321-1, 321-2, 321-3, and 321-4 perform a function of exerting a supporting force with a pushing force by performing length adjustment according to the diameter of the vertical sphere. For such length adjustment, the first to fourth telescopic supports (321-1,321-2,321-3,321-4) have one end (ie, the right end) of the first to fourth support shoes (320-1,320-2,320-4). 3,320-4), one end (that is, the left end is connected to the outer circumferential surface of the body 310 and surrounds the outer surface of the inner support rod 350) It consists of an external support rod 360.

Through-holes 351 are formed in the inner support bar 350 and are formed at regular intervals on the outer circumferential surface of the outer support bar 360 to adjust the length. At this time, the through hole 351 is fixedly fastened to the stopper hole 322 by bolting methods 340 and 341 . That is, the nut 341 is fastened to the end of the bolt 340 by inserting the bolt 340 through the stopper hole 322 from the top to the bottom.

The first to fourth support shoes 320-1, 320-2, 320-3, and 320-4 have curved planes to prevent punching destruction of the wall of the support surface. Stainless steel, engineering plastic, etc. may be used as a material for the first to fourth support shoes 320-1, 320-2, 320-3, and 320-4. Of course, an elastic material such as rubber, plastic, or silicon may be attached to the surface to give surface friction and elasticity. In addition, the load may be distributed through the first to fourth support shoes 320-1, 320-2, 320-3, and 320-4.

FIG. 4 is a block diagram illustrating the rotation of the horizontal guide rail 110 shown in FIG. 1 . Referring to FIG. 4, a first pulley gear 410 is installed on the horizontal guide rail 110 to rotate the horizontal guide rail 110 from -90 ° to +90 °, and on the support frame 130 A second pulley gear 420 is installed, and the first pulley gear 410 and the second pulley gear 420 may be connected by a timing belt 411 . Of course, the second pulley gear 420 is connected to the rotation shaft of the motor 430. A controller 440 may be configured to control the motor 430 . The controller 440 may be composed of an electronic circuit. Of course, in addition to the pulley method, a rotation method by engaging gears with gears is also possible. Also, the controller 440 may include a wired/wireless communication circuit. Accordingly, the user may remotely operate the controller 440 through a communication terminal during excavation work.

FIG. 5 is a block diagram of water jet nozzle holders 120-1, 120-2, 120-3, and 120-4 shown in FIG. Referring to FIG. 5, the water jet nozzle holders 120-1, 120-2, 120-3, and 120-4 include a communication unit 510, a microprocessor 520, a first actuator 530, a second actuator 540, and a wheel 550. , It may be configured to include a nozzle 121.

The communication unit 510 performs a function of being connected to a user's communication terminal (not shown) through a wired and/or wireless connection.

The microprocessor 520 performs a function of controlling the first actuator 530 and the second actuator 540 according to a user's control command transmitted through the communication unit 510 . The first actuator 530 is composed of a first motor 530-1 and a first gear 530-2 connected to the first motor 530-1. That is, the first gear 530-2 is connected to the rotation shaft of the first motor 530-1 to drive the wheel 550. The wheel 550 serves to move on the horizontal guide rail 110 . Of course, threads may be formed on the surface of the wheel 550 and threads may be formed on the outer circumferential surface of the horizontal guide rail 110 . Alternatively, a rubber material may be attached to the surface of the wheel 550. Various methods are applicable.

The second actuator 540 is composed of a second motor 540-1 and a second gear 550-2 connected to the second motor 540-1. That is, the second gear 540-2 is connected to the rotating shaft of the second motor 540-1 to move the nozzle 121. That is, it becomes a rack and pinion gear method. Accordingly, the second gear 540-2 is meshed with the screw thread 121-12 shown in FIG. 1 to move the nozzle 121 up and down. Accordingly, the user can remotely control the first actuator 530 and/or the second actuator 540 during excavation work.

6 is a conceptual view of vertical excavation using the water jet rock excavation apparatus 100 shown in FIG. 1 . Referring to FIG. 6 , a water jet rock excavation device 100 is installed in a vertical hole of the rock ground 60 to generate an excavation pattern 61 with a nozzle 121 .

7 is an example of an excavation cross-section cutting pattern according to vertical excavation shown in FIG. 6 . Referring to FIG. 7 , based on the center point 710, a circle 712 is a trajectory of the nozzle 121, and a sector 711 represents an excavation area. In other words, as the horizontal guide rail 110 rotates between 0° to +90° or 0° to -90°, the nozzle 121 also rotates, and the spray form of the water ejected from the nozzle 121 (in a conical shape) similar), the rock surface is excavated in a fan shape.

8 is a side view showing the cutting concept of the wall surface of the vertical sphere lining 81 using the water jet rock excavation apparatus 800 according to another embodiment of the present invention, and FIG. 9 is a front view of the water jet rock excavation apparatus in FIG. 8 am.

Referring to FIGS. 8 and 9 , a portion of the vertical sphere lining wall 80 connected to the main tunnel is cut. In order to cut the part where the main tunnel and the vertical sphere are connected during the vertical sphere top-down lining construction, the water jet rock excavation device 800 includes a horizontal guide rail 110 rotatable at a certain angle, the horizontal guide rail ( 110), at least two water jet nozzle holders 120-1 and 120-2 movable in the horizontal direction, a circumferential guide rail 240 to which both ends of the horizontal guide rail 110 are assembled, and the circumferential guide rail 240 It may be configured to include a support frame 130 attached to the upper surface of the circumferential guide rail 240 and fixedly supporting the circumferential guide rail 240, a fixed frame 810 assembled to the upper surface of the support frame 130, and the like. .

The fixed frame 810 includes a vertical support 811 arranged in a vertical line, a first horizontal support 812-1 and a second horizontal support 812-2 coupled to both ends of the vertical support 811, respectively. It consists of The first horizontal support 812-1 and the second horizontal support 812-2 have one end coupled to both ends of the vertical support 811, and the other ends contacting the one side wall surface of the vertical sphere.

The fixed frame 810 is disposed on a vertical line in the vertical sphere 81, and the support frame 130 is disposed in a horizontal line in the vertical sphere 810. Accordingly, the fixed frame 810 and the support frame 130 are orthogonal to each other. In addition, the fixing frame 810 performs a function of fixing the circumferential guide rail 240 parallel to the right wall surface of the vertical sphere.

100,800: Waterjet rock drilling rig
110: horizontal guide rail
120-1,120-2,120-3,120-4: first to fourth water jet nozzle holders
121: nozzle 121-2: thread
130: support frame
140-1: upper half guide rail 140-2: lower half guide rail
150-1,150-2: First to second fixed water jet nozzle holders
210-1,210-2: first to second connection parts
230: connecting rod 240: circumferential guide rail
250: elastic member 260: ball
310: body
321-1,321-2,321-3,321-4: first to fourth elastic supports
320-1,320-2,320-3,320-4: first to fourth support shoes
410: first pulley gear 411: timing belt
420: second pulley gear
510: communication unit 520: microprocessor
530: first actuator 540: second actuator
810: support frame 811: vertical support
812-1,812-2: first to second horizontal supports

Claims (1)

A horizontal guide rail 110 rotatable at a certain angle;
At least two water jet nozzle holders 120-1, 120-2, 120-3, and 120-4 movable in the horizontal direction of the horizontal guide rail 110 on the horizontal guide rail 110; and
A cylindrical guide rail 240 fastened to an end of the horizontal guide rail 110; includes,
The end of the horizontal guide rail 110 is fastened to the circumferential guide rail 240 so as to protrude the circumferential surface of the circumferential guide rail 240 at a certain length, and is fixed to the end of the horizontal guide rail 110. A fixed water jet nozzle holder (150-1,150-2) is installed,
The water jet nozzle holder (120-1, 120-2, 120-3, 120-4) is a water jet rock drilling device, characterized in that the length is adjustable.

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