JP4759678B2 - Drilling device and drilling method using the same - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drilling machine for installing a machine or the like at a predetermined angle in a cylindrical small cross-sectional space of about φ800 to 1200 mm, and in particular, drilling in an injection method used in combination with a pipe roof method that is a tunnel auxiliary method. Regarding installation . The present invention also relates to a drilling method using this drilling apparatus .
[0002]
[Prior art]
Conventionally, when excavating a tunnel in a place where the natural ground is unstable, a pipe roof construction method in which a steel pipe is built prior to the top of the tunnel has been performed as an auxiliary construction method. In the pipe roof construction method, spring water cannot be prevented, and if the ground is extremely weak, there is a possibility that a hollow may occur between the pipe roof pipes. For this reason, a chemical solution such as cement milk or water glass is injected into the ground near the pipe roof together with the pipe roof construction method.
[0003]
These injection operations have been carried out, for example, by drilling holes from the face 201 of the tunnel 200 as shown in FIG. 7 or from the ground surface 203 as shown in FIG.
7 and 8, 205 indicates a pipe roof, and 210 indicates an injection target ground.
[0004]
[Problems to be solved by the invention]
However, in these injection operations, since the injection target ground 210 is away from the hole opening, it is difficult to inject into a predetermined position because of poor positional accuracy. For this reason, the injection amount increases or in the worst case There was also a risk of flooding and a collapse of the top.
[0005]
In order to reliably inject into a predetermined location, it is most desirable to inject from the inside of the pipe roof, but there has never been a method for drilling from the inside of a cylindrical small sectional space of φ800 to 1200 mm that is required prior to injection. It was.
The present invention has been made to solve such conventional problems, and its purpose is to fix a drilling machine so that drilling can be performed efficiently and accurately in a cylindrical small cross-sectional space of φ800 to 1200 mm. An object of the present invention is to provide a drilling device capable of performing the above.
[0006]
Another object of the present invention is to provide a drilling method capable of drilling efficiently and accurately in a cylindrical small section space.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a drilling device that is movably disposed in a tubular body having a cylindrical small cross-sectional space of φ800 to 1200 mm constituting a pipe roof, the drilling machine and the drilling machine A fixing portion to be fixed; a hydraulic jack provided in the fixing portion and moving the drilling machine back and forth in the outer peripheral direction of the tubular body; and provided in the fixing portion, on a wall surface of the cylindrical small cross-sectional space A plurality of fixing jigs arranged on a substantially cylindrical surface centering on a central portion of the hole drilling device, and a lower surface side of the fixing portion so as to face the wall surface of the cylindrical small cross-sectional space And a fixing jack disposed on a substantially cylindrical surface centering on the central portion of the drilling device, and the fixing portion so as to sandwich the fixing jack, toward the wall surface of the cylindrical small section space Centered on the center of the drilling device A plurality of rollers arranged on a cylindrical surface, and an injection hose for injecting an injection material attached to a hole drilled from the tubular body toward the outside by the drilling machine, and the ground is unstable When excavating a tunnel at a location, before injecting the chemical into the ground near the pipe roof, together with the pipe roof construction method in which a steel pipe with a diameter of 800 to 1200 mm is built ahead of the top of the tunnel, the plurality of rollers are The pipe body is moved in the front-rear direction of the pipe body, and is fixed to the wall surface by the fixing jig at an injection point, and the drilling machine is moved forward and backward by a hydraulic jack, and the natural ground is removed from the pipe body. The injection hose is attached to the drilled hole, and the injection material is injected through the injection hose.
[0008]
In the invention according to claim 2, when excavating a tunnel in a place where the natural ground is unstable, the pipe roof construction method in which a steel pipe having a diameter of 800 to 1200 mm is built in front of the top of the tunnel is combined with the ground near the pipe roof. Before injecting the chemical into the mountain, the hole drilling device according to claim 1 is arranged in a tubular body having a cylindrical small cross-sectional space of φ800 to 1200 mm constituting the pipe roof, and the pipe is inserted through the plurality of rollers. The body is moved in the front-rear direction of the tubular body, fixed to the wall surface with the fixing jig at the injection point, and the drilling machine is moved forward and backward with a hydraulic jack to cut from the tubular body toward the ground. The injection hose is attached to the hole, and the injection material is injected through the injection hose.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on embodiments shown in the drawings.
1 to 3 show a machine fixing device A and a drilling method using the machine fixing device A according to the first embodiment of the present invention (corresponding to all claims).
First, as shown in FIGS. 1 and 2, a machine fixing device A according to the present embodiment includes a machine fixing unit 1 placed in a cylindrical small cross-sectional space (φ800 mm to 1200 mm) 7, a hole drilling device, A machine mounting portion 2 for mounting a machine such as a drilling device (in this embodiment, a drilling machine) and a hydraulic jack 3 that is movably attached to the machine fixing portion 1 and moves the machine mounting portion 2 back and forth. ing.
[0016]
The machine fixing part 1 includes a base part 11, a guide part 12 and an attachment part 13.
The base portion 11 is made of a metal plate material, and a fixing jack 15 is attached to the lower surface side. The base portion 11 is provided with rising wall portions 11a that are inclined at a predetermined angle on both sides. A ball caster 16 is provided outside each rising wall portion 11a.
[0017]
Further, a back plate 11 b is erected on the base portion 11 in the vicinity of the fixing jack 15. The back side of the back plate 11 b is supported by a triangular support plate 11 c that is fixed onto the base portion 11.
On both sides of the back plate 11b, guide portions 12 are provided in the vertical direction.
The guide portion 12 is attached in a direction perpendicular to the axis of a substantially cylindrical surface (corresponding to a cross section of a circle formed by a circumference C described later) formed by the fixing jig 14 and the fixing jack 15; As will be described later, a guide groove 17 is provided when the machine mounting portion 2 moves back and forth in the outer circumferential direction of the cylindrical small cross-sectional space 7. The guide groove 17 is installed so as to be exactly parallel to the movement direction of a piston 32 described later.
[0018]
A pair of attachment portions 13 are provided on both sides of the upper side of the back plate 11b so as not to interfere with the guide portion 12. The attachment portion 13 has a wing shape and is attached with a fixing jig 14 made of a screw structure such as a bolt.
[0019]
The fixing jig 14 is provided in at least three places, preferably six places or more. Among these fixing jigs 14, at least three are arranged at substantially equal intervals with respect to the circumference of the cylindrical small cross-sectional space 7.
Here, the fixing jig 14 and the ball caster 16 are set so as to be substantially positioned on a circumference C centering on the center O of the machine fixing device A according to the present embodiment.
[0020]
The radius of the circumference is preferably slightly smaller than the radius of the tube P constituting the cylindrical small cross-sectional space 7 where the work is performed. By adjusting (stretching) the fixing jig 14 and the fixing jack 15, the cylinder It arrange | positions so that it can fix to the wall surface 71 of the small-shaped cross-section space 7. FIG.
A cylinder side 31 of the hydraulic jack 3 is mounted on the base portion 11 so that the direction of movement of the piston 32 is a substantially cylindrical diameter direction in which the fixing jig 14 is disposed. .
[0021]
As described above, the hydraulic jack 3 has the cylinder side 31 attached to the base portion 11 of the machine fixing portion 1. The machine mounting portion 2 is integrally attached to the tip of the piston 32.
The machine mounting portion 2 includes an attachment portion 21 attached to the piston 32, a machine base portion 22 for attaching a machine such as a drilling machine, and a guide plate 23 that meshes with the guide groove 17.
[0022]
In order to perform drilling using the machine fixing device A, the drilling machine 4 is configured so that the drilling direction of the drilling machine 4 (direction of the drilling rod) is parallel to the movement direction of the piston 32 of the hydraulic jack 3. Install. If the size of the drilling machine 4 to be attached is of a size that does not hinder the piston 32 of the hydraulic jack 3 from moving forward and backward for drilling work, a conventional drilling machine may be installed.
[0023]
For example, as shown in FIGS. 1 to 3, the handle portion 4 a of the hole drilling machine 4 is sandwiched between the presser plate 24 and the bolt nut 25. However, it is not necessarily limited to this, and an appropriate method may be used depending on the shape of the drilling machine 4 to be attached.
Next, a drilling method using the machine fixing device A on which the drilling machine 4 is mounted will be described (corresponding to claims).
[0024]
First, as shown in FIG. 3 (1), a hole drilling hole 72 is set by marking with a marking device or the like in advance at a location where the hole drilling is performed.
Next, the machine fixing device A on which the hole drilling machine 4 is mounted is brought into a predetermined position of the cylindrical small cross-sectional space 7, and the operator 8 moves through the ball caster 16 to change the hole drilling direction of the hole drilling machine 4. The hole is aligned with the hole 72 that has been marked in advance, and is fixed to the wall surface 71 using the fixing jig 14.
[0025]
At this time, the hydraulic jack 3 is in a state of being contracted to an extent that does not hinder the work in the cylindrical small cross-sectional space 7.
The radius of the substantially cylindrical surface on which the fixing jig 14 is arranged is made slightly smaller than the radius of the cylindrical small section working space 7, and the forward / backward direction of the hole drilling machine 4 is arranged with the fixing jig 14. Therefore, the drilling direction of the drilling machine 4 is located in the diameter direction of the cylindrical small cross-sectional space 7.
[0026]
At this time, since the ball caster 16 is mounted on the substantially cylindrical shape on which the fixing jig 14 is disposed, the angle and the front and rear position can be easily adjusted.
Next, the operator 8 operates the manual hydraulic jack 81 to drive the fixing jack 15, and presses the machine fixing device A to the wall surface 71.
Next, when the fixing is completed, as shown in FIGS. 3 (2) to (5), a predetermined conical tool is attached to the drilling machine 4, and the drilling machine 4 and the hydraulic jack 3 are operated to perform drilling. .
[0027]
Since the normal drilling machine 4 rotates at a predetermined speed when the switch is turned on, the operator 8 only needs to operate the hydraulic jack 3.
Next, an injection hose (not shown) is attached to the hollow pipe 73 that has been drilled, and the injection material is injected toward the natural ground.
4 to 6 show a machine fixing device B according to another embodiment of the present invention and a drilling method using this machine fixing device B (corresponding to all claims).
[0028]
In the present embodiment, an example in which a drilling machine 4A is used instead of the drilling machine 4 is shown.
The machine fixing device B according to the present embodiment includes a machine fixing unit 100 placed in a cylindrical small cross-sectional space (φ800 mm to 1200 mm) 7 and a machine mounting unit 110 on which the drilling machine 4A is mounted. .
The machine fixing portion 100 includes a frame member 101 having an octagonal cross section in which one side 101a is cut out, fixing jigs 104a and 104b attached to sides 101b and 101c on both sides of one side 101a of the frame member 101, and the frame member 101, a fixing jack 105 provided on a side 101d opposite to one side 101a, fixing jigs 104c and 104d provided on the side 101d so as to be positioned on both sides of the fixing jack 105, sides 101e on both sides of the side 101d, And a ball caster 106 provided at 101f.
[0029]
The machine mounting part 110 is composed of a fixing member attached to the cut-out side 101a of the frame member 101. The machine mounting portion 110 is coupled to the base portion 4A1 of the drilling machine 4A via a fall prevention belt. The base portion 4A1 incorporates a hydraulic jack for moving the drilling machine 4A forward and backward.
Further, the machine mounting portion 110 is provided with an electromagnetic magnet 115. This is used to securely fix the drilling machine 4A to the wall surface 71.
[0030]
Next, a drilling method using the machine fixing device B to which the drilling machine 4A is attached will be described.
First, as shown in FIG. 6 (1), the machine fixing device B to which the drilling machine 4A is attached is brought into a predetermined position of the cylindrical small cross-sectional space 7, and the operator 8 moves through the ball caster 106. 6 (2), the fixing jigs 104a, 104b, 104c, 104d and the fixing jack 105 are operated and fixed to the wall surface 71.
[0031]
At this time, the hydraulic jack of the drilling machine 4A is in a contracted state so as not to hinder the work in the cylindrical small cross-sectional space 7.
The radius of the substantially cylindrical surface on which the fixing jigs 104a, 104b, 104c, and 104d are arranged is made slightly smaller than the radius of the cylindrical small section working space 7, and the forward / backward direction of the drilling machine 4A is fixed. Since the holes 104a, 104b, 104c, 104d are arranged in the diameter direction of the substantially cylindrical surface, the drilling direction of the drilling machine 4A is located in the diameter direction of the cylindrical small cross-sectional space 7.
[0032]
At this time, since the ball caster 106 is mounted on the substantially cylindrical shape on which the fixing jigs 104a, 104b, 104c, and 104d are arranged, the angle and the front and rear position can be easily adjusted.
Next, the operator 8 operates the electromagnetic magnet 115 to crimp the machine fixing device B to the wall surface 71.
[0033]
Next, when the fixing is completed, as shown in FIG. 6 (3), a predetermined drilling tool is attached to the drilling machine 4A, and the drilling machine 4A and the hydraulic jack are operated to perform drilling.
Next, an injection hose (not shown) is attached to the drilled hole, and the injection material is injected toward the natural ground.
[0034]
【The invention's effect】
According to the present invention, drilling can be performed from the inside of a small cylindrical small cross-sectional space (φ800 mm to φ1200 mm) narrow enough for a single worker such as in a pipe roof to enter the outer periphery, which is efficient and accurate. Drill a hole.
[0035]
Moreover, injection | pouring can be appropriately performed to the natural ground near the cylindrical small cross-section space using this hole.
[Brief description of the drawings]
FIG. 1 is a front view of a machine fixing device according to an embodiment of the present invention.
FIG. 2 is an explanatory view showing a state in which a hole drilling machine is mounted on a machine fixing device according to an embodiment of the present invention and is carried into a cylindrical small section working space.
FIG. 3 is an explanatory diagram showing a procedure for carrying out a hole drilling by mounting a hole drilling machine on a machine fixing device according to an embodiment of the present invention and carrying it into a cylindrical small cross section working space.
FIG. 4 is a front view of a machine fixing device according to another embodiment of the present invention.
FIG. 5 is an explanatory view showing a state in which a drilling machine is mounted on a machine fixing device according to another embodiment of the present invention and is carried into a cylindrical small section work space.
FIG. 6 is an explanatory diagram illustrating a procedure for carrying out drilling by mounting a drilling machine on a machine fixing device according to another embodiment of the present invention, carrying it into a cylindrical small cross section work space, and FIG.
FIG. 7 is a conventional construction situation diagram of an injection method as a tunnel auxiliary method.
FIG. 8 is another conventional construction situation diagram of an injection method as a tunnel auxiliary method.
[Explanation of symbols]
A, B Machine fixing device 1 Machine fixing part 2 Machine mounting part 3 Hydraulic jack 4 Drilling machine 4A Drilling machine 7 Cylindrical small section space 11 Base part 12 Guide part 13 Mounting part 14 Fixing jig 15 Fixing jack 16 Ball caster

Claims (2)

A drilling device that is movably disposed in a pipe body comprising a cylindrical small cross-sectional space of φ800 to 1200 mm constituting a pipe roof,
Drilling machine,
A fixing part for fixing the drilling machine;
A hydraulic jack that is provided in the fixing portion and moves the drilling machine back and forth in the outer circumferential direction of the tubular body;
A plurality of fixing jigs provided on the substantially cylindrical surface centered on the central portion of the hole drilling device so as to face the wall surface of the cylindrical small cross-sectional space provided in the fixing portion;
A fixing jack that is provided on a lower surface side of the fixing portion and is disposed on a substantially cylindrical surface centering on a central portion of the drilling device so as to face a wall surface of the cylindrical small cross-sectional space;
A plurality of rollers provided on the fixing portion so as to sandwich the fixing jack, and disposed on a substantially cylindrical surface centering on a central portion of the drilling device so as to face a wall surface of the cylindrical small cross-sectional space; ,
An injection hose for injecting an injection material attached to a hole drilled from the pipe body toward the outside by the hole drilling machine,
When excavating a tunnel in a place where the ground is unstable, before injecting chemicals into the ground near the pipe roof, together with the pipe roof construction method in which a steel pipe of φ800 to 1200 mm is built ahead of the top of the tunnel , Moving in the longitudinal direction of the tubular body through the plurality of rollers, fixed to the wall surface by the fixing jig at the injection point, the drilling machine is moved forward and backward by a hydraulic jack, A drilling device characterized in that a hole is drilled from a pipe body toward the ground, the injection hose is attached to the drilled hole, and an injection material is injected through the injection hose. When excavating a tunnel in a place where the ground is unstable, before injecting chemicals into the ground near the pipe roof, together with the pipe roof construction method in which a steel pipe of φ800 to 1200 mm is built ahead of the top of the tunnel The hole drilling device according to claim 1 is arranged in a tubular body having a cylindrical small cross-sectional space of φ800 to 1200 mm constituting the pipe roof, and the tubular body is disposed in the longitudinal direction of the tubular body through the plurality of rollers. And fixed to the wall surface with the fixing jig at the injection point, the hole drilling machine is moved forward and backward by a hydraulic jack, and a hole is drilled from the pipe body toward the ground, and the injection into the hole An injection method in a small cylindrical space characterized by attaching a hose and injecting an injection material through the injection hose.

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