JP2715068B2 - Rock cutting method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for cutting rock at the time of cutting rock at a quarry, and can be applied to cutting of other large concrete blocks.

[0002]

2. Description of the Related Art Conventionally, a rock cutting method using a cutting wire in a quarry has been known in which a rock having a steep cliff as shown in FIG. Hole 1 with each tip penetrating (vertically)
The holes a and 2a were drilled, the cutting wire 60 was passed through the holes, and the wire was continuously pulled in the direction of the arrow a and cut as shown by a two-dot chain line.

[0003]

FIG. 6 shows a two-dot chain line.
Surfaces 3a and 3b are shown, but lines A connecting the vertical holes
Could not be cut down. Therefore, one or both of the surfaces 3a (3b) shown in the figure are used, and the quarry is further cut diagonally, or a large number of holes are drilled and broken, so that there are many parts that become waste, Moreover, it was difficult to reliably collect only high-quality portions as blocks.

[0004] The present invention has been made in view of the above-mentioned circumstances, and provides a rock cutting method capable of cutting a rock to a predetermined depth along a required cutting line on the upper surface of the rock without using a cliff. And a device therefor.

[0005]

The method of the present invention for achieving the above object, according to an aspect of is to holes cut substantially vertically into the blind holes at both ends of the cutting line of the rock top, near the upper and lower ends, pulleys respectively A pillar with a pulley pivotally mounted in an orthogonal state is inserted to the bottom of the hole, and the pillar is prevented from being pulled out by a pillar removal prevention device, and a predetermined pillar on a rock extending from the pillar with a pulley at a right angle to the planned cutting line. In this position, a first intermediate pulley is pivotally supported with its side surface being parallel to the top surface of the rock, and a line extending at right angles to the planned cutting line from the other pulley-supported strut passes through an outer groove of the drive pulley. setting has been driving vehicles, the cut and scheduled line perpendicular given tension outward configured to move on the rock, the cutting wire from the drive pulley first
The blind hole is raised through the upper pulley and lower pulley of one of the columns with pulleys via the intermediate pulley, and the other blind hole is lowered through the planned cutting line, and then passes through the lower pulley and upper pulley to the drive pulley. And endlessly turning the drive pulley in one direction while applying tension to the prime mover, and cutting the rock at the predetermined cutting line downward to a predetermined depth.

Further, in the method of the present invention, a second intermediate pulley is pivotally supported at a predetermined position on a bedrock extending at right angles to the planned cutting line from the other pulley-equipped column. The cutting wire passing through the upper pulley with the support post passes through the drive pulley via the second intermediate pulley and is passed around endlessly, and the driving wheel is driven by the cutting wire passing through the first and second intermediate pulleys. Is wound, and moves substantially perpendicularly to the planned cutting line. The rock cutting method according to claim 1, wherein the method moves substantially perpendicularly to the planned cutting line.

Further, in the method of the present invention, the vicinity of the blind hole extending in the direction of movement of the cutting wire on the line to be cut is provided.
It drills a blind hole of a predetermined depth into which the submersible pump enters, turns on the submersible pump, and cuts the rock at the predetermined cutting line downward to a predetermined depth while pumping the cutting chips together with water.

The apparatus according to the present invention comprises a pair of pulley-supported pillars near the lower end and the upper end of the hollow tube, in which the pulleys are pivotally mounted at right angles to each other, and are prevented from being pulled out by blind holes by a pillar removal prevention device. A first intermediate pulley pivotally supported in a state in which the side surface is parallel to the top surface of the rock mass on an extension line perpendicular to a line connecting the one pulley-equipped strut and both pulley-equipped struts, and a line connecting both the pulley-equipped struts. A prime mover having a drive pulley pivoted by a prime mover that is moved by being provided with a tension substantially at a right angle and pivoted by the prime mover, a drive pulley, a first intermediate pulley, a pulley of one of the columns with pulleys, and the other. A rock cutting device comprising a cutting wire connected endlessly to a pulley of a column with a pulley, the cutting device comprising a cutting wire.

Further, in the device of the present invention, the second intermediate pulley has a side surface parallel to the top surface of the bedrock on a line extending at right angles to a line connecting the two columns with pulleys from the other column with pulleys. It is pivoted at.

[0010] Further, the support pulling-out prevention device in the device of the present invention is configured such that a wire is stretched from the upper end of the support with pulley to at least three fixed anchors on the rock.

Further, the hollow tube of the column with the pulley in the device of the present invention is joined at a predetermined length at a point, and a stabilizer for preventing eccentricity in the blind hole of the hollow tube is provided on the way. They are provided at predetermined intervals.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 is a perspective view illustrating the method and apparatus of the present invention, FIG. 2 is a plan view illustrating the method and apparatus of the present invention, FIG. 3 is an explanatory view of a column with a pulley, and FIG. FIG. 5 is an explanatory view of a pipe joint of a column with a pulley, and FIG. 6 is a perspective view illustrating a conventional rock cutting method.

As shown in FIG. 1 and FIG. 2, blind holes 11 and 21 are provided at both ends of the planned cutting line B on the bedrock by a boring machine substantially in a horizontal direction.
Drill holes. Then, a column 1 with a pulley as shown in FIG.
0 and 20 are inserted to the bottom of the hole, and a wire 12b is stretched from the upper end of the pillars with pulleys 10 and 20 to the fixed anchors 12a on the three sides of the rock as the pillar removal prevention device 12. This may be three or more. Pulleys 13a and 13b are pivotally attached to the pillars with pulleys 10 and 20 near the lower end and the upper end, respectively, so as to be orthogonal to each other. As shown in FIG. At a predetermined length of the pipe 14, a splicer joint 14b is formed, and a taper pin 14a is formed.
And so on. The joint may utilize screwing or other conventional boring rod joint structures.

In the middle of the hollow tube 14, the hollow tube 14
In order to prevent eccentricity in the blind holes 11 and 21, stabilizers 15 as shown in FIG. 4 are provided at predetermined intervals. In the figure, reference numeral 60 denotes a cutting wire. The structure shown in FIG.
a is welded, and the bolt 15b is screwed to the bolt 15b so that the bolt 15b can be adjusted in and out. By adjusting the length of the bolt 15b, it is possible to cope with a certain difference in the hole diameter. In the case where the hole diameter is fixed, the stabilizer 15 may be formed by welding a mountain-shaped projection to a predetermined length in the longitudinal direction on three or four sides of the outer periphery of the hollow tube 14.

In FIGS. 1 and 2, reference numeral 30 denotes a blind hole for cutting chips, which is cut to a predetermined depth near the blind hole 21 on an extension of the direction in which the cutting wire 60 moves, and the cutting chips are cut. Is supplied together with water and pumped by a submersible pump 31 so that rock cutting can be easily performed. Spring water at the cutting site flows into the cutting groove of the cutting wire 60, and the groove 32 extends from the blind hole 12 to the groove 32. And flows into the blind hole 30 together with the cutting waste. In FIG. 2, reference numeral 31a denotes a lifting hose.

However, even if there is no blind hole 30 for cutting chips, there is no problem in construction.

In FIG. 1 and FIG. 2, reference numeral 41 denotes a first intermediate pulley, which is pivotally supported at a predetermined position on a bedrock extending perpendicularly to a cutting line from one of the columns 11 with pulleys. 2 is a second intermediate pulley 42 shown by a two-dot chain line, which shows the structure of the second or fifth aspect. The shafts of the first and second intermediate pulleys 41 and 42 are preferably provided with anchor bolts (not shown) perpendicular to the rock and used. FIG.
As shown in (1), the side surfaces of the intermediate pulleys 41 and 42 are in a state parallel to the upper surface of the rock.

Reference numeral 51 denotes a drive pulley, which is pivotally mounted on a motor 50 running on a rail 52 and is rotated by the motor. The motor 50 is mounted on a bedrock as shown in FIG. The wire is pulled outward by a lever block 53, a chain block, or the like, so that tension is applied to the cutting wire 60. The tension may be provided by a linear actuator such as a hydraulic cylinder.

In the configuration of claim 1 or 4, only the first intermediate pulley, the cutting wire 61 on the tension side is extended from the other pulley-equipped column 20 at right angles to the line B to be cut.
It passes through a groove on the outside of the drive pulley 51. The motor vehicle 50 moves outward at right angles to the planned cutting line B. In the case of the said structure, the 2nd intermediate | middle pulley 42 compared with 2 or 5 shown by the two-dot chain line in FIG.
Is unnecessary, and the upper and lower pulleys 13 of the column 20 with pulleys are directly provided.
The resistance is small since the cutting wire 60 on the cutting line B is pulled through the b and 13a.

In order to cut the rock with the rock cutting device as described above, the cutting wire 60 connected endlessly is used, and the loose side 62 is connected to one of the columns 10 with pulleys.
Cutting wires 60 on the upper and lower pulleys 13b, 13a
With the pulley 10 in one blind hole 11
Then, the column removal prevention device 12 is set. Next, the cutting wire 60 in which the blind hole 11 is raised.
Is arranged on the planned cutting line B, and the cutting wire 60 is passed through the lower pulley 13a and the upper pulley 13b on the other pulling side 61 in the blind hole 21 in the same manner as before. After the insertion, the column pull-out preventing device 12 is set, and then it is passed over the drive pulley 51.

In this case, when only the first intermediate pulley 41 is provided, the first intermediate pulley 41 is passed through the first intermediate pulley 41, and the first and second intermediate pulleys 41, 4
When 2 is pivotally mounted on the bedrock, the cutting wire 60 is passed over the drive pulley 51 through both.

If there is a blind hole 30 for charging the submersible pump 31, the submersible pump 31 is charged and operated.

Next, the prime mover 50 is moved by the lever block 53 and the like.
Is pulled outward to apply tension to the cutting wire 60, and in this state, the drive pulley 51 is rotated so that the cutting wire 60 moves in the direction of the arrow in FIGS. The bedrock is cut downward.

[0024]

According to the present invention described in detail above, the following effects can be obtained. (1) Stone can be cut out without waste, and it is also possible to cut out only high-quality portions.
5 or 6).

(2) The work is easy because the cutting wire is pushed into the blind hole with the support post, instead of passing the cutting wire through the hole as in the prior art.
Or 6).

(3) If a blind hole is provided for the submersible pump,
Since cutting chips are easily collected, cutting is facilitated (claim 3).

(4) Since any number of hollow tubes of the column with pulleys can be added, the column can be cut to an arbitrary depth. Further, since the stabilizer is provided, there is no eccentricity of the column in the blind hole, and the cutting wire can be cut. It can move up and down inside the blind hole without fail (claim 7).

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating a method and an apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention and explaining a method and an apparatus.

FIG. 3 is an explanatory view of a column with a pulley showing one embodiment of the present invention.

FIG. 4 is an explanatory view of a stabilizer provided in the middle of a column with a pulley according to the present invention.

FIG. 5 is an explanatory view of a pipe joint of a column with a pulley according to the present invention.

FIG. 6 is a perspective view illustrating a conventional rock cutting method.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 One column with a pulley 11 Blind hole 12 Column removal prevention device 12a Fixed anchor 12b Wire 13a, 13b Pulley 14 Hollow tube 14a Tapered pin 15 Stabilizer 2 0 The other column with a pulley 30 Blind hole 31 Submersible pump 41 First intermediate Pulley 42 second intermediate pulley 50 prime mover 51 drive pulley 52 rail 53 lever block 60 cutting wire 61 cutting wire 62 cutting wire

Claims (7)

(57) [Claims] 1. A with holes cut substantially vertically into the blind holes at both ends of the cutting line of the rock top, near the upper and lower ends, inserting a pivoted by pulleys with struts in a state of pulleys, each orthogonal to the hole bottom The first intermediate pulley is positioned at a predetermined position on the rock extending perpendicularly to the planned cutting line from one of the pillars with pulleys, and the side surface is parallel to the upper surface of the rock. A prime mover pivotally supported at a right angle and extending from the other column with a pulley at right angles to the planned cutting line through an outer groove of the drive pulley is provided at a right angle with the planned cutting line to the outside. to given tension is configured to move on the rock, the cutting wire from the drive pulley through a first intermediate pulley, the pulley on the one pulley with struts, increase the blind hole through the lower sheaves And lower the other blind hole through the planned cutting line. , Endlessly passing through the upper pulley to the drive pulley, cutting the bedrock at the predetermined cutting line downward to a predetermined depth while rotating the drive pulley in one direction while applying tension to the prime mover. How to cut rock. 2. A second intermediate pulley is also pivotally supported at a predetermined position on a bedrock extending perpendicular to the cutting line from the other pulley-supported strut. The cutting wire passing therethrough is endlessly routed through the drive pulley via the second intermediate pulley, and the driving wheel is wound around the cutting wire passing through the first and second intermediate pulleys, and is scheduled to be cut. The rock cutting method according to claim 1, wherein the rock mass is moved substantially perpendicular to the line. 3. A blind hole having a predetermined depth into which a submersible pump enters is drilled near the blind hole extending in the direction in which the cutting wire moves on the planned cutting line, and a submersible pump is supplied to remove cutting chips. The rock cutting method according to claim 1 or 2, wherein the rock at the cutting line is cut downward to a predetermined depth while being pumped together with water. 4. A pair of pulley-supported pillars, which are pivotally mounted near the lower end and the upper end of the hollow tube, respectively, in a state of being orthogonal to each other, and which are prevented from being pulled out by blind holes by a support removal device, and one pulley-supported pillar. The first intermediate pulley pivotally supported with its sides parallel to the top surface of the bedrock on an extension line perpendicular to the line connecting both the columns with pulleys, and the line connecting both the columns with pulleys, and the tension at a substantially right angle. A prime mover on which a drive pulley that is given and moves and pivoted by the prime mover is pivotally mounted, a drive pulley, a first intermediate pulley, a pulley on one pulley-supported pillar, and a pulley on the other pulley-supported pillar. And a cutting wire connected endlessly with the cutting wire. 5. A second intermediate pulley is pivotally supported on a line extending perpendicular to a line connecting the two pulley-supported columns from the other pulley-supported column, with the side surface being parallel to the upper surface of the bedrock. The rock cutting device according to claim 4, characterized in that: 6. The support pulling-out prevention device has a structure in which a wire is stretched from a top end of a support with a pulley to at least three fixed anchors on rock.
Or the rock cutting device according to 5. 7. A hollow tube of a pillar with a pulley is spliced at a predetermined length, and stabilizers are provided at predetermined intervals on the way to prevent eccentricity in a blind hole of the hollow tube. The rock cutting apparatus according to claim 4, 5 or 6, wherein the rock cutting is performed.