JPH03172494A - Continuous drilling method and device therefor - Google Patents

Abstract

PURPOSE:To facilitate the continuous drilling of an annular hole or a slotted groove by making crush depth less than the strike rebound quantity of a rod, then feeding a drilling machine laterally and continuously in the right-angled direction to the axis of the rod during its rebound, and repeating this operation. CONSTITUTION:A continuous drilling device is formed of a travel device 1, a boom mechanism 4, a supporting base 13, a guide cell 20, a guide pipe rotating shift device 30, a guide pipe 40, a drilling machine 50, and the like. The device 1 is driven to place the pipe 40 horizontally and in the state of facing the reference hole of a rock-bed R, and advance the cell 20 to press a foot pad 21 to the rock-bed R. The pipe 40 is then moved forward to bring a pit 52 into contact with the rock-bed R and strike/rotate a rod 51. The crushed quantity crushed by the pit 52 is to be less than the rebound quantity of the rod 51, and during the receding action of the pit 51, the pipe 40 is rotated to turn the rod 51. Repeating this, an annular hole H, for instance, can be drilled continuously. Continuous drilling can be thus performed easily.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a continuous drilling method and a continuous drilling device.

(Problems to be Solved by Prior Art and the Invention) Conventionally, for example, in order to drill a tunnel hole in rock, a large-diameter center hole is drilled with a drilling machine, and a hole is drilled around the center hole. There is a method in which small-diameter holes are provided at appropriate intervals, explosives such as dynamite are set in the small-diameter holes, and explosives such as dynamite are sequentially exploded outward to crush them inward.

However, if explosives are used to drill holes in this way, the impact of the explosion will affect the rock, and in some cases, there is a risk of cave-ins. In addition, since the gunpowder is extremely dangerous to handle, there are legal regulations on how to store it.
It's not easy to use. Furthermore, if there are residences nearby, this will cause anxiety to residents, and vibrations will be generated due to the blasting, so it is preferable to drill the hole without using explosives.

As a drilling method that does not use explosives, multiple holes of a predetermined diameter and depth are simultaneously drilled using a drilling device equipped with multiple rock drills. There is a method of pushing a wedge or the like into the hole and sequentially crushing the rock toward the reference hole. This method does not use gunpowder as described above, so the above problem is solved.

However, such a hole-drilling device requires a large amount of force to drill a hole, so the machine itself, including the hydraulic system, becomes large and very expensive.

By repeating this process, an annular continuous hole of a predetermined depth may be bored.

Furthermore, as a continuous drilling device, a guide cell is provided at the tip of a boom mechanism provided on a traveling device so as to be able to move forward and backward, and a centralizer and a guide pipe revolve around the guide cell.
A guide pipe arranged to be movable forward and backward and rotatable by a moving device, a main body attached to the rear end of the guide pipe, and the rod thereof is located eccentrically from the center of the guide pipe on both sides of the guide pipe. The drill is slidably and rotatably held by the rod, and has a hole drilling machine whose crushing depth of the bit is less than the full impact rebound of the rod.

(Function) According to the first invention, the depth of crushing by the bit is set to be less than the full impact rebound of the rod, the drilling machine is fed laterally during the rebound of the rod, and this is repeated, so that continuous drilling is performed in rock, etc. You can easily get it.

Further, according to the second and third inventions, in the cross-feeding,
The present inventors have discovered that by drilling an annular hole or long grooves at predetermined intervals in the center of the rock, and pushing a wedge or the like into the annular hole or long groove, and the small diameter holes around it, the central part of the annular hole or the long groove can be It was discovered that it is possible to fracture the gap between the hole and the surrounding small-diameter hole using a non-blasting method without using explosives.

The present invention has been made based on the above findings, and an object thereof is to provide a continuous drilling method and apparatus that can continuously drill the above-mentioned annular holes or long grooves.

(Means for Solving the Problems) The present invention has been made to achieve the above-mentioned object, and its drilling method includes crushing rock etc. by hitting and rotating a rod equipped with a bit at the tip. The above-mentioned crushing depth is set to be less than the full impact rebound of the rod, and while the rod is rebounding, the drilling machine is continuously fed horizontally along with the rod in the direction C perpendicular to its axis.By repeating this, a predetermined depth is obtained. It is used to drill continuous holes.

Further, since the rod is caused to revolve together with the drilling machine, and this is performed by the revolution movement of the drilling machine, continuous annular holes can be easily obtained.

(Example) Next, an example of the continuous drilling method and apparatus according to the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a continuous drilling device for continuously drilling annular grooves, which roughly consists of a traveling device 1, a boot mechanism 4, and a support base 13.
, guide cell 20, guide pipe revolution/movement device 30,
It consists of a guide pipe 40 and a drilling machine 50.

As is conventionally known, the traveling device 1 is capable of moving forward and backward and turning, and is equipped with a hydraulic pressure generating device 2 at the rear.
A boom mechanism 4 is provided at the front.

Note that 3 is a hydraulic control valve.

The boom mechanism 4 includes a boom 5 whose rear end is freely attached to the traveling device 1, and a first hydraulic cylinder that is attached between the lower surface of the boom 5 and the traveling device 1 and moves the tip of the boom 5 up and down. 6, and a second hydraulic cylinder tuff attached to the side surface of the boom 5 between the traveling device 1 and swinging the tip of the boom 5 from side to side.

A support base 13 is rotatably attached to the tip of the boom 5 by means of a pin 8.

Further, a U-shaped link 10 that rotates around a pin 9 is provided behind the pin 8 of the boom 5, and the tip of this link 10 is rotatably connected to the support base 13 by a pin 11. At the same time, a third hydraulic cylinder 12 whose one end is attached to the traveling device 1 is connected to this pin 11, and the third hydraulic cylinder 12 allows the support base 13 to be tilted above the plate.

The support stand 13 has a protrusion on the side (on the back side in the drawing), and has a support stand main body 14 that is pivoted to the boom 5 with a pin 8, and a guide cell 20, which will be described below, sliding on both sides of the protrusion. The first is to hold it freely. Second holding table]! 5a, +! 5b, and both holding stands 15a.

A connecting member 16 for connecting the parts 15b is rotatably mounted on a vertical shaft (not shown) provided in the protrusion.

In addition, the side of the first holding stand 15a and the supporting stand are provided, and the holding part 32, as shown in FIG. Guide rollers 34a, 3 that rotatably hold 40
/lb, and a transmission roller 35a35b for moving the guide pipe forward and backward is provided inside. Also, on one side of the slide bed 31 is a hydraulic motor 36 for rotating the guide pipe.
has.

As described above, the kite vibe 40 is made of a cylindrical body whose both ends are rotatably held by the guide roller 24 of the centralizer 22 and the guide rollers 34a, 371b of the holding section 32, and has the following holes at both ends. 45a and 451] for holding the rod 51 of the drilling machine 50.

The guide pipe 40 also has two flanges/1 which the forward and backward movement transmission rollers 35a and 35b abut from the outside.
6a, 4.6b, and a sprocket 37 is provided between the two flanges 46a, 46b, and a roller chain 48 body 13 stretched between the sprocket 37 of the hydraulic motor 36. A fourth hydraulic cylinder 17 is provided on the second holding table 1.5b and the lower surface of the guide cell 20, respectively, and a hydraulic flange 18 for forward and backward movement is provided, and the fourth hydraulic cylinder 17 moves the guide cell 20 around the vertical axis. The guide cell 20 is moved forward and backward by a hydraulic cylinder 18 for forward and backward movement.

The guide cell 20 has a foot pad 21 at the tip and a centralizer 22 slightly rearward thereof.The centralizer 22 has an annular housing portion 23 formed therein, and the housing portion 23 has a A plurality of guide rollers 24 are provided to rotatably hold a kite pipe 40, which will be described below. Note that 25 is a stopper for stopping the advance of the slide bed 31, which will be described below.

The revolution/movement device 30 of the drilling machine 50 consists of a slide bed 31 and a holding part 32 that are slidably mounted on the guide cell 20.

The slide bed 31 is enabled to move forward and backward in the C guide cell 20J- via a chain 27 by a hydraulic motor 26 provided in the guide cell 20, thereby making the guide pipe 40 rotatable.

The drilling machine 50 is of a conventionally well-known hydraulic type, and is designed to rotate a rod 51 once per impact.The main body 50a of the drilling R50 is fixed to a mounting base 49 integrated with the guide pipe 40, Reference numeral 51 is held in the guide portions 45a+45b of the guide pipe 40 so that it can move forward and backward freely. 52 is a bit that is inserted at the tip of the rod 51, and a part of this bit 52 is shown in FIG. As shown by the two-dot chain line, it protrudes outside the guide pipe 40. 53 is a known swivel joint that supplies hydraulic pressure to the drilling machine 50, and the drilling machine 50 moves over the kite cell 20. It is designed to move forward and backward.

Note that the center line of the swing point 53 coincides with the center line of the guy 1-pipe 40.

and each of the hydraulic cylinders;7. The hydraulic motors 26, 36, etc. are connected to the hydraulic pressure generator 2 through the hydraulic control valve 3 and a hydraulic hose (bundle) 54, and are driven by the hydraulic pressure.

]0 Next, a method of drilling a circular hole in the -C rock mass R using the continuous drilling device having the above-mentioned configuration will be described.

First, while driving the traveling device 1, the boom 5 is driven by the first to third hydraulic cylinders 6, 7.12 to bring the guide pipe 40 into a horizontal state, and the fourth hydraulic cylinder 1
7 to face the position of the rock R where the reference hole is to be provided.

Then, the hydraulic linter 18 for forward and backward movement is driven to move the guide cell 20 forward and press the foot pad 21 against the Yl board R.

Subsequently, the slide head 3 is moved by the pressure motor 26.
The guide pipe 40 is advanced through the hole drilling machine 50.
The bit 52 is brought into contact with the rock R, and a hole is drilled by driving the drilling machine 50 and rotating the lot 51 nine times as in the conventional manner.

In addition to driving the drilling machine 50, the hydraulic motor 3
By slightly rotating the guide pipe 6, the guide pipe 40 is rotated, and the drilling machine 50 is caused to revolve.

In this case, the drill 52 of the drilling machine 50 crushes the rock by the impact of the piston, and then rebounds (
), but the amount of crushing is less than rebound In,
While the bit 52 is retracting, the kite pipe 40 is rotated, that is, the rod 51 is caused to revolve.

In this way, an annular hole I (with a predetermined depth of 63 Mr.

As the annular hole H becomes deeper, the guide pipe 4 degrees also moves forward, or as mentioned above, since a part of the bit 52 is located outside the guide pipe 40, the kite pipe 40 moves inside the annular hole ■4. Drilling continues in this state.

In this way, the tip of the rod 51 is always connected to the guide pipe 4.
Since the rod 5I is supported by the guide portion 45 of 0, deep annular holes I can be continuously drilled without damaging the rod 5I.

In the above embodiment, one drilling machine 50 was installed in the guide pipe 4o, but the drilling efficiency can be further improved by providing a plurality of drilling machines concentrically at appropriate intervals. I can do it.

In addition, in the above embodiment, the annular hole 14 is continuously drilled in the rock R, etc., or when long grooves are continuously drilled in the rock R, the guide pipe 40 has a rod that protrudes sufficiently in front of the guide pipe 40. 51, guide cell 2
0 is slightly retracted to separate the foot pad 21 from the rock R, and at the same time, the crushing depth of the bit 52 is set to be less than the amount of rebound of the impact of the pulling rod 51, and the hole 850 is drilled together with the rod 51 without rotating the guide pipe 4o. By continuously transversely feeding in a direction perpendicular to the axis, long grooves of a predetermined depth can be continuously drilled.

(Effects of the Invention) As is clear from the explanation below, by using the continuous drilling method according to the present invention, it is possible to continuously drill holes of a predetermined depth, and it is possible to continuously drill holes of a predetermined depth. By pushing a wedge or the like into a small diameter hole around it, it is possible to crush the center or between the long grooves and the surrounding small diameter holes without blasting.

Further, the continuous drilling device according to the present invention has a simple structure that consists of adding a guide pipe and a guide pipe revolution/movement device to a conventional drilling device, and can be manufactured at low cost.

[Brief explanation of the drawing]

Fig. 1 is a side view of the continuous drilling device according to the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1, Fig. 3 is a front view of the guide pipe, and Fig. 4 is a diagram of the guide pipe revolution and movement device. 5 is a partially sectional side view of FIG. 4. FIG. 1... Traveling device, 4... Boom mechanism, 13... Support stand, +58. +5b...Holding stand, 20...Guide cell, 22...Centralizer, 24...Guide roller, 26.36...Hydraulic motor, 30...Guide pipe revolution/movement device, 31...Slide Bet, 40...
- Guide pipe, 50... Drilling machine, 5I... Rod, 52... Bit, 53... Swivel joint, l-1... Annular hole, R... Rock mass.

Claims (3)

[Claims] (1) When hitting and rotating a rod equipped with a bit at the tip to crush rock, etc., the crushing depth is set to be less than the amount of impact rebound of the rod, and while the rod is rebounding, the drilling machine is moved along with the rod. 1. A continuous hole drilling method, characterized in that a continuous hole of a predetermined depth is drilled by continuously transversely feeding in a direction perpendicular to an axis and repeating this process. (2) When hitting and rotating a rod with a bit at the tip to crush rock, etc., the crushing depth is set to be less than the amount of impact rebound of the rod, and the drilling machine revolves with the rod while the rod is rebounding. A continuous hole drilling method characterized by drilling a continuous annular hole of a predetermined depth by repeating this process. (3) A guide cell provided at the tip of the boom mechanism provided on the traveling device so that it can move forward and backward, and a guide that is arranged so that it can move forward and backward and rotate by means of a centralizer and a guide pipe revolution/movement device installed in the guide cell. A main body is attached to a pipe and a rear end of the guide pipe, and its rods are slidably and rotatably held at positions eccentric from the center of the guide pipe on both sides of the guide pipe, and the rods are slidably and rotatably held at positions eccentric from the center of the guide pipe on both sides of the guide pipe. A continuous drilling device characterized by comprising a drilling machine whose depth is equal to or less than the amount of impact rebound of the rod.