JPH07173987A - Drilling position indicating method for tunnel working face and drilling position indicating system used for the method - Google Patents

Abstract

PURPOSE:To indicate a drilling position on an entire working face without any need of undertaking a marking work for the face. CONSTITUTION:The three-dimensional position coordinates of an irradiation device 4 relative to a working face K are measured with the first laser transmitter 11 and the light wave range finder 12 of a total station 2 laid behind a tunnel T along a drilling direction, and the arrangement pattern data of each blasting hole H preliminarily stored in a personal computer 24 is corrected to generate correction pattern data with an irradiation control device 25 on the basis of the three-dimensional position coordinates of the device. Then, a laser beam is irradiated to the working face K from the device 4 on the basis of the data so corrected, thereby indicating the position of the blasting hole H to be drilled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is suitable for displaying a position to be drilled on a face when drilling a blast hole for setting explosives when, for example, excavating a tunnel using a blasting method. The present invention relates to a method for displaying a drilling position on a tunnel face and a drilling position display system used for the method.

[0002]

2. Description of the Related Art Generally, in order to excavate a tunnel,
There are various construction methods depending on the geological conditions and the like, and in recent years, excavation construction methods have been developed that are automated using various machines. However, when excavating tunnels in rock, the blasting method is still widely used. In this blasting method, a tunnel hole is formed by drilling a blast hole along the axial direction of the tunnel on the face of the tunnel to be excavated, and then setting explosives in the blast hole to blast the face. It is like this. Conventionally, in order to drill a blast hole on a face face, the position of the blast hole on the face face is determined in advance so that a predetermined tunnel cross-sectional shape can be obtained, and in accordance with the arrangement, a worker can work on an aerial work vehicle. I made a marking on the face of the face with paint and drilled a hole with a drilling device according to this marking.

[0003]

However, the following problems exist in the conventional marking work of the blast hole on the tunnel face as described above. That is, when the marking work is performed, the face face may be unstable on the bedrock due to the blast performed in the preceding process, which is a dangerous work. In addition, the marking work may have to be performed in an unstable posture depending on the shape of the face face, which not only poses a problem in the safety of the work, but also causes a problem that the marking work itself is a painful work. Moreover, since the operator manually performs marking, the positional accuracy of the marking cannot be said to be high. In recent years, in order to solve the above problems, a laser transmitter is installed behind the face face in the direction of excavation, and the position of the blast face is irradiated to the face face with a laser beam. A method has been developed to display the position of. However, even in this method, since the drilling device for drilling the blast hole is arranged in the vicinity of the face face, the face face cannot be irradiated with the laser beam because the hole drilling device interferes. However, in such a case, it is necessary to move the drilling device one by one, and the working efficiency is very poor. The present invention has been made in consideration of the above points, and is capable of displaying a position to be drilled on the entire face of a tunnel without performing a marking operation on the face of the face. An object is to provide a hole position display method and a hole position display system used for the method.

[0004]

The invention according to claim 1 is
A method of displaying a position to be drilled on a face of a tunnel to be excavated when a hole extending substantially in the axial direction of the tunnel is displayed, which is a three-dimensional object in advance. A total station for measuring the position is installed at the rear of the tunnel in the excavating direction, and a laser irradiation means equipped with a control device for controlling the direction of the laser beam to be irradiated is provided at a position where the laser beam can be irradiated onto the entire face. In advance, the total station detects the distance between the total station and the cutting face, and the three-dimensional position of the laser irradiation means with respect to the total station by measuring the three-dimensional position of the laser irradiation means with respect to the total station, The hole arrangement data previously input to the control device is used as the correction data based on the laser irradiation means. Is corrected to, the irradiated laser light toward the working face surface on the basis of the correction data by the laser irradiation means is characterized by displaying the position to be drilled in 該切 feather surface.

According to a second aspect of the present invention, in the method for displaying the drilling position on the tunnel facet according to the first aspect, the laser irradiating means irradiates the facet with a laser beam to form a plurality of facets on the facet. When displaying the drilling position of, the irradiation time of the laser light to each drilling position is set to a fixed minute time, and the position to be irradiated with the laser light is continuously continuous from one drilling position to another drilling position. It is characterized in that the drilling position of the entire face is displayed by switching the display.

According to the third aspect of the present invention, when excavating a tunnel, when a hole extending in the axial direction of the tunnel is drilled in the face of the tunnel, a position to be drilled in the face of the face is set. A drilling position display system used for displaying, wherein a first laser transmitter for irradiating a laser beam and a light wave for irradiating a laser beam in the same direction as the laser beam are provided on the rear side of the tunnel excavation direction. A light wave range finder for measuring the distance to the arranged light wave receiver, and a total station provided with a controller for controlling the direction of the laser light and the light wave irradiated by the first laser oscillator and the light wave range finder, and At the position facing the face,
A drilling device for drilling the hole is installed, and in front of the total station in the excavating direction, a light wave receiver for emitting a light wave incident from the light wave distance meter toward the light wave distance meter, and the first Laser receiver for detecting the irradiation position of the laser light emitted from the laser transmitter, the second laser transmitter for emitting the laser light based on the hole arrangement data, and the irradiation by the second laser transmitter. A drilling position irradiating device comprising a control device for controlling the direction of the laser light is installed, and the second laser transmitter is arranged at a position where the entire face is irradiated with the laser light. It is characterized by

The invention according to claim 4 is the drilling position display system according to claim 3, wherein the second laser transmitter, the light wave receiver and the laser receiver of the drilling position irradiation device are the drilling position. It is characterized in that it is provided integrally with the device.

[0008]

According to the first aspect of the invention, the total station installed at the rear of the tunnel in the excavating direction measures the distance between the total station and the face and the three-dimensional position of the laser irradiation means with respect to the total station. Set the three-dimensional position with respect to the face. Then, the hole arrangement data input in advance is corrected to correction data with the position of the laser irradiation means as a reference, and based on this correction data, the laser irradiation means is used to direct the laser light toward the position where the face face should be drilled. To irradiate. As a result, the position to be drilled is irradiated with the laser light and displayed on the face. At this time, since the laser irradiation means is installed at a position where the laser beam can be irradiated on the entire face of the face, it is possible to display all the drilling positions without the laser beam being blocked by the drilling device or the like. .

According to the second aspect of the invention, the irradiation time of the laser beam to each drilling position is set to a fixed minute time, and the position to be irradiated with the laser beam is sequentially changed from one drilling position to another drilling position. I tried to switch continuously. by this,
When the face face is viewed, a plurality of drilling positions are displayed on the entire face face within a fixed time.

According to the third aspect of the invention, the total station equipped with the first laser transmitter and the lightwave rangefinder is installed behind the tunnel in the excavating direction. As a result, when the laser light is radiated to the light wave receiver arranged on the object, that is, the light wave is irradiated to the light wave receiver, and the light wave radiated and the light wave returned from the light wave receiver to the light wave range finder are Depending on the phase difference, the total station and the object,
For example, the distance from the face face or the hole irradiating device is detected. The laser receiver detects the irradiation position of the irradiated laser light. Then, the three-dimensional position of the object can be measured from the distance detected by the light wave distance meter and the irradiation position detected by the laser receiver. Further, since the hole position irradiating device is configured so that the light wave receiver, the laser light receiver, and the second laser transmitter are integrally installed, the position of this light wave light receiver and the laser to the laser light receiver are provided in the total station. By measuring the light irradiation position, that is, the position of the second laser oscillator is measured. Then, the correction data of the hole arrangement data with reference to the second laser oscillator is calculated, and the laser beam is irradiated to the face by the second laser oscillator based on this, and the position where the hole should be drilled. Can be displayed on the face. At this time, since the drilling position irradiation device is installed at a position where the laser beam can be irradiated on the entire face of the face, it is possible to display all the drilling positions without the laser beam being blocked by the drilling device. Becomes

According to the fourth aspect of the invention, the second laser transmitter, the light wave receiver, and the laser receiver of the drilling position irradiating device are integrally provided in the drilling device. This makes it possible to position the drilling device at the drilling position displayed on the face of the face by the second laser transmitter.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. Here, for example, when excavating a tunnel using a blasting method, an example will be described in which the method for displaying a drilling position on a tunnel face and the system for displaying a drilling position used therefor are applied. Figure 1
FIG. 3 shows a drilling position display system according to the present invention. As shown in FIG. 1, an irradiation system (drilling position display system) 1 includes a total station 2 installed near, for example, an entrance of a tunnel T, and a face K of a face which is arranged facing a face K of the tunnel T. The main components are a drilling device 3 for drilling a blast hole (hole) H and an irradiation device (drilling position irradiation device) 4 provided on the drilling device 3.

The total station 2 is a first laser transmitter that emits laser light (first laser transmitter).
11, a light wave range finder 12 that is provided integrally with the first laser oscillator 11 and emits a light wave in a direction parallel to the laser light emitted by the first laser oscillator 11, and the first laser oscillator 11 And a follow-up controller (controller) 13 for controlling the irradiation directions of the optical distance meter 12 respectively
It is configured to include and. As is well known, the first laser transmitter 11 irradiates a laser beam, which is a visible light having a short wavelength and a high straightness, in one direction. The light wave range finder 12 irradiates a light wave, which is an invisible light ray having a long wavelength close to infrared rays, in a direction parallel to the laser light, and the irradiated light wave is incident on a light wave receiver arranged at a separated position. Then, when returning to the lightwave range finder 12, the separation distance from the lightwave receiver is measured from the phase difference between the irradiated lightwave and the returning lightwave. Here, when the light wave is irradiated, the light wave receiver emits the light wave toward the light wave range finder 12 regardless of the incident angle. These first laser transmitters 11
The lightwave distance meter 12 is rotatably supported in a horizontal plane and a vertical plane, so that the laser light and the lightwave can be emitted in an arbitrary direction. Further, the first laser transmitter 11 and the lightwave distance meter 12 are provided with a function of detecting the laser light to be emitted and the irradiation angle (horizontal direction, vertical direction) of the lightwave. The tracking controller 13 keeps the laser light and the light wave at the target 2 when the target 20 described later moves.
In order to irradiate 0, the first laser transmitter 11 and the optical distance meter 12 are configured to have a function of following the movement of the target 20 and automatically rotating and driving. With such a configuration, in the total station 2, the irradiation position of the laser light, the irradiation angle of the light wave, and the light wave distance meter 12
The three-dimensional position coordinates of the target object can be calculated based on the distance measured from the light wave receiver measured in (4).

Further, the boring device 3 has a boring bit 15 for boring a blast hole H for setting explosives on the face K to be bored, and an arm 1 for moving the boring bit 15.
6 is provided on the traveling vehicle 17. In this drilling device 3, the drilling bit 15 is placed on the arm 16 at the position where the laser beam is irradiated by the irradiation device 4 described later.
The blast hole H is drilled by moving the blast hole 15 toward the facet K by moving the blast hole H by moving the blast hole H.

The irradiation device 4 is provided on the upper part of the hole making device 3 via an arm 18. Irradiation device 4
Is the first laser transmitter 1 of the total station 2.
1, a laser light emitted from the lightwave range finder 12, a target 20 for receiving the lightwave, and an irradiation laser transmitter for irradiating the laser light toward the facet K (laser irradiation means,
The second laser transmitter 21 is integrally provided. Then, the irradiation device 4 is provided with the hole making device 3
It is supported by the arm 18 at a position facing the face K without being blocked by the arm 18. CC for the target 20
Laser receiver 2 which is an imaging device including D (Charge Coupled Device)
2 is provided, and the laser receiver 22 is adapted to convert the coordinates of the position irradiated with the laser light into an electric signal for reading. Furthermore, in the target 20,
The light wave receiver 23 is attached to a position where the light wave from the light wave range finder 12 strikes when the laser light from the first laser transmitter 11 is applied to the laser light receiver 22. The irradiating laser transmitter 21 irradiates a laser beam similarly to the first laser transmitter 11, and the irradiating laser transmitter 21 blasts the faceted face K input to the personal computer 24. An irradiation control device (control device) 25 is provided which controls the direction, time, etc., to irradiate the laser light based on the arrangement pattern data of the holes H (hole arrangement data). The irradiation control device 25 has a function of correcting the arrangement pattern data based on the measurement data of the lightwave distance meter 12 of the total station 2.

Irradiation system 1 having such a configuration
Can be remotely controlled by the remote controller 26.

Next, a method of displaying the position where the blast hole H should be drilled on the face K of the tunnel T by applying the irradiation system 1 having the above-described structure will be described. The following operation of the irradiation system 1 is basically performed by remote control at a position separated from the face K by the remote controller 26. Here, for example, in FIG.
It is assumed that the blast hole H is drilled in the face K with the arrangement pattern as shown in FIG.

The irradiation system 1 is arranged in advance as shown in FIG. At this time, as described above, the total station 2 is installed behind the tunnel T in the excavation direction, such as near the entrance of the tunnel T, and the position of the total station 2 itself is measured to determine the installation coordinates (three-dimensional coordinates) of the total station 2. ) Is measured and input to the personal computer 24. In addition, the drilling device 3
Is located at an arbitrary position facing the face K.

First, the first laser transmitter 11 and the lightwave range finder 12 of the total station 2 irradiate the laser light L1 and the light wave W1, respectively, and the laser light L1 is the laser receiver 22 of the target 20 of the irradiation device 4 in front.
The irradiation direction of the first laser transmitter 11 is adjusted while visually confirming that the first laser transmitter 11 hits. This allows the lightwave rangefinder 1
The light wave W1 irradiated from 2 enters the light wave receiver 23, and this light wave W1 ′ is emitted from the light wave receiver 23 toward the light wave range finder 12. Then, the lightwave rangefinder 12
Then, the separation distance between the target 20 and the lightwave rangefinder 12, that is, the separation distance between the irradiation device 4 and the lightwave rangefinder 12, is calculated from the phase difference between the irradiated lightwave W1 and the returned lightwave W1 ′. The total station 2 also detects the irradiation angles of the laser light L1 and the light wave W1, and as a result, the three-dimensional position coordinates of the irradiation device 4 with respect to the total station 2 are measured. Next, face K
The light wave prism (light wave receiver) 30 is positioned at an arbitrary position. At this time, the light wave prism 30 has such a size that both the laser light L2 from the first laser oscillator 11 and the light wave W2 from the light wave range finder 12 are irradiated. Then, by adjusting the irradiation direction of the first laser oscillator 11 so that the laser light L2 from the first laser oscillator 11 of the total station 2 strikes the light wave prism 30, the light wave W2 from the optical distance meter 12 is directed to the light wave prism 30. Hit As a result, the three-dimensional position coordinates of the light wave prism 30 are calculated in the same manner as described above, and based on this, the facet K and the total station 2 are calculated.
Calculate the distance between and. Then, in the personal computer 24, the installation coordinates of the total station 2 and
From the three-dimensional position coordinates of the irradiation device 4 with respect to the total station 2 calculated in the total station 2 and the distance between the face K and the lightwave range finder 12, the three-dimensional position coordinates with respect to the face K of the irradiation device 4 are calculated.

Next, in the personal computer 24, the arrangement pattern data of the blast holes H, which has been input in advance, is
Correction is made to correction pattern data (correction data) based on the three-dimensional position coordinates with respect to the face K of the irradiation device 4. Based on the correction pattern data of the blast holes H corrected in this way, the irradiation control device 25 irradiates each blast hole H with the irradiation laser transmitter 21 for displaying each blast hole H on the face K. The angles are calculated respectively and sent to the irradiation laser transmitter 21. Then, based on the irradiation angle data of each blast hole H, the laser beam L3 for irradiation is irradiated from the irradiation laser transmitter 21 toward the facet K at a predetermined irradiation angle, so that the facet K of each blast hole H is irradiated. The drilling position is displayed. Further, in the irradiation control device 25, the irradiation time to each blast hole H irradiated from the irradiation laser transmitter 21 is set to a fixed minute time such as 0.1 seconds, and the blast holes H, H, ... The irradiation is performed sequentially from one blast hole H to another blast hole H in a predetermined order. Then, for example, when 40 blast holes H are arranged on the entire face K, all blast holes H, H, ... Are continuously irradiated in 4 seconds. From the afterimage, the arrangement pattern of the blast holes H on the entire face K can be easily recognized.

After displaying the drilling position of the blast hole H on the face K in this manner, the arm 16 of the hole drilling device 3 is moved and moved forward toward the face K, as shown in FIG. The blast holes H are drilled at predetermined positions on the face K according to the arrangement shown.

In the above-described method of displaying the drilled position on the face K of the tunnel T, the three-dimensional position coordinates of the irradiation device 4 with respect to the face K are measured in advance by the total station 2 arranged behind the tunnel T in the excavation direction. Arrangement pattern data of each blast hole H input to the personal computer 24 is corrected to correction pattern data based on the three-dimensional position coordinate of the irradiation device 4, and the irradiation device 4 is based on the correction pattern data. Laser light L3 on the face K
Is irradiated to display the position of the blast hole H to be drilled. In this way, the blast hole H can be formed without the operator directly performing the marking work on the face K as in the conventional case.
Since the position can be displayed, the safety of the work can be significantly improved, the laborious work can be abolished, and the position of the blast hole H can be displayed with high accuracy. Also, when changing the drilling position, since it is only necessary to change the arrangement pattern data by the personal computer 24, it is possible to easily cope with it. Further, in the irradiation control device 25, the irradiation time of the laser beam L3 to each blast hole H irradiated from the irradiation laser transmitter 21 is set to a fixed minute time, and the blast hole H of the entire facet K,
H, ... Is sequentially and successively irradiated. As a result, all the blast holes H, H, ... Are continuously irradiated within a short fixed time, and the afterimage of the blast holes easily recognizes and confirms the arrangement pattern of the blast holes H on the entire face K. It becomes possible to do.

In the irradiation system 1 described above, the tunnel T
A total station 2 including a first laser transmitter 11, a lightwave distance meter 12 and a follow-up controller 13 is installed behind the excavating direction. This allows
The face K and the three-dimensional position of the irradiation device 4 can be measured. Moreover, at this time, since the laser beams L1 and L2 are visible rays, even in the dark tunnel T, it is possible to easily irradiate the facet K and the light wave receiver of the irradiation device 4 with the light wave. Further, when the irradiation device 4 moves, the follow-up controller 13 follows the movement and automatically drives the first laser transmitter 11 and the optical distance meter 12 to rotate. L2 and the light waves W1 and W2 can be constantly applied to the light wave receiver,
Even if the drilling device 3 is moved as the excavation work progresses, it is not necessary to remeasure the position of the irradiation device 4 each time. Further, since the target 20 of the irradiation device 4 and the irradiation laser transmitter 21 are integrally installed, this target 20 is used in the total station 2.
It is possible to measure the position of the irradiation laser transmitter 21 by measuring the position. Then, the three-dimensional position coordinates of the irradiation device 4 with respect to the facet K measured by the total station 2 and the personal computer 2
The position of the blast hole H to be drilled is displayed by irradiating the face K with the laser beam L3 based on the arrangement pattern data of each blast hole H input in 4. You can At this time, the irradiation device 4 is not blocked by the hole drilling device 3 and the laser beam L3 is applied to the entire face K.
Since it is installed at a position capable of irradiating the laser beam, it is possible to efficiently perform the drilling position display work on the facet K without moving the drilling device 3. Further, the irradiation device 4 is provided on the hole drilling device 3 and is integrally configured. As a result, it becomes possible to position the drilling device 3 with high accuracy at the drilling position displayed on the face K by the irradiation device 4. As a result, it becomes possible to drill the blast hole H according to the previously planned drilling position data. In addition, since the operation of the irradiation system 1 is configured to be performed remotely by the remote controller 26, the face K
The work can be performed at a safe position separated from, and the work safety can be further improved.

In the above embodiment, the irradiation device 4 is installed on the drilling device 3, but they may be installed separately. However, even in this case, the irradiation device 4 can be irradiated with laser light on the entire face K without being blocked by the hole drilling device 3, for example, in the vicinity of the wall surface of the tunnel T on the side of the hole drilling device 3 or the like. Need to be installed. In such a case, the irradiating device 4 may be operated so as to visually position the drilling bit 15 while the drilling position is displayed on the face K. In addition, in the above embodiment, when excavating the tunnel T using the blasting method,
When drilling the blast hole H for setting explosives, the method for displaying the drilling position on the tunnel face and the system for displaying the drilling position used therefor have been described as examples, but the invention is not limited to this. Not a thing. For example, in addition to this, when excavating the tunnel T by the split rock method, even when drilling a hole for inserting the split rock machine into the face K, etc., the drilling position display on the tunnel face of the present invention By applying the method and the drilling position display system used for the method, it is possible to achieve the same effect as that of the above-described embodiment.

[0025]

As described above, according to the method for displaying the drilling position on the face face of the tunnel according to the first aspect, the total face station installed behind the tunnel in the direction of excavation measures the face face of the laser irradiation means. The three-dimensional position is detected. Then, the hole arrangement data input in advance is corrected to the correction data based on the laser irradiating means, and the laser irradiating means irradiates the laser beam toward the position to be drilled on the face based on this correction data. I tried to irradiate. As a result, the position to be drilled is irradiated with the laser light and displayed on the face. At this time, since the laser irradiation means is installed at a position where the laser beam can be irradiated on the entire face of the face, it is possible to display all the drilling positions without the laser beam being blocked by the drilling device or the like. . In this way, since the drilling position can be displayed without the operator directly performing the marking work on the face face as in the conventional case, the safety of the work can be significantly improved and the troublesome work can be performed. It can be abolished, and the drilling position can be displayed with high accuracy. Further, when changing the drilling position, it is only necessary to change the hole arrangement data, so that it is possible to easily cope with it.

According to the method for displaying the drilling position on the tunnel face according to the second aspect, the irradiation time of the laser light to each drilling position is set to a fixed minute time, and the position to be irradiated with the laser light is cut by one. The hole position is continuously switched to another hole position. With this, when the face surface is viewed, a plurality of drilling positions are shown on the entire face surface within a certain time, and the afterimage of the holes makes it possible to easily recognize the hole arrangement pattern.

According to the hole drilling position display system of the third aspect, the total station equipped with the first laser transmitter and the optical distance meter is installed behind the tunnel in the excavating direction. This makes it possible to measure the three-dimensional positions of the total station and the object, for example, the face of the face and the hole position irradiation device. At this time, since the laser light is visible light, it is possible to easily position and irradiate the light wave on the light wave receiver even in a dark tunnel tunnel. Further, since the hole position irradiating device is configured so that the light wave receiver, the laser light receiver, and the second laser transmitter are integrally installed, the position of this light wave light receiver and the laser to the laser light receiver are provided in the total station. By measuring the light irradiation position, that is, the position of the second laser oscillator is measured. Then, the control device calculates hole arrangement data with reference to the second laser transmitter, and the second laser transmitter irradiates the laser beam on the face face based on the data to drill the hole. The position can be displayed on the face. At this time, since the drilling position irradiation device is installed at a position where the laser beam can be irradiated on the entire face of the face, it is possible to display all the drilling positions without the laser beam being blocked by the drilling device. Becomes Further, by displaying the drilling position on the face of the face without performing the marking work in this way, it becomes possible to realize the method for displaying the position of the face on the face of the tunnel according to claims 1 and 2. .

According to the drilling position display system of the fourth aspect, the second laser transmitter, the light wave receiver and the laser receiver of the drilling position irradiating device are integrally provided in the drilling device. Thus, if the positions of the light wave receiver and the laser receiver are obtained at the total station, the position of the drilling device can be known. Accordingly, if the drilling device is operated based on the positional relationship between the light wave receiver and the laser receiver and the drilling device, the drilling device is moved to the drilling position displayed on the face of the face by the second laser transmitter. Can be positioned with high accuracy. As a result, it becomes possible to carry out drilling according to the previously planned hole arrangement data.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an example of a tunnel for excavating by applying a method for displaying a drilling position on a tunnel face and a drilling position display system used therefor according to the present invention.

FIG. 2 is a front view showing an arrangement of holes to be drilled on the face of the tunnel.

[Explanation of symbols]

1 Irradiation System (Drilling Position Display System) 2 Total Station 3 Drilling Device 4 Irradiation Device (Drilling Position Irradiation Device) 11 First Laser Transmitter (First Laser Transmitter) 12 Optical Distance Meter 13 Tracking Controller (Controller) 21 laser transmitter for irradiation (laser irradiation means, second laser transmitter) 22 laser receiver 23 light wave receiver 25 irradiation control device (control device) 30 light wave prism (light wave receiver) H blast hole (hole) K face Surface L1, L2, L3 laser light T tunnel W1, W2 light wave

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Miki Kanaoka 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Takashi Fujiuchi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction (72) Inventor Hidetake Ishizaki 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Yuichi Kikuchi 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (4)

[Claims] 1. A method for displaying a position to be drilled on the face of a face of a tunnel to be excavated when a hole extending substantially in the axial direction of the tunnel is drilled. A total station for measuring the three-dimensional position of the object is installed at the rear of the tunnel in the excavating direction, and a laser irradiation means equipped with a control device for controlling the direction of the laser light to be irradiated is used to apply the laser light to the entire face face. The laser irradiation means is provided at a position where irradiation is possible, and the three-dimensional position of the laser irradiation means with respect to the cutting face is measured by measuring the distance between the total station and the cutting face with the total station and the three-dimensional position of the laser irradiation means with respect to the total station. After detecting the, the hole arrangement data previously input to the control device is used as a reference for the laser irradiation means. Corrected to the correction data
A method for displaying a drilling position on a tunnel facet, characterized in that the laser irradiating unit irradiates a laser beam toward the facet face based on the correction data and displays a position to be drilled on the facet face. . 2. The method for displaying a drilling position on a tunnel facet according to claim 1, wherein the laser irradiating means irradiates the facet with a laser beam to display a plurality of drilling positions on the facet. When, the irradiation time of the laser light to each drilling position is a fixed minute time, and the position to be irradiated with the laser light is continuously and sequentially switched from one drilling position to another drilling position, and A method for displaying a drilling position on a tunnel face, wherein the drilling position of the entire face is displayed. 3. When excavating a tunnel, when a hole extending in the axial direction of the tunnel is drilled on the face of the tunnel, a shaving used for displaying a position to be drilled on the face. A hole position display system, including a first laser transmitter that irradiates a laser beam and a light wave receiver that irradiates a light wave in the same direction as the laser light and is placed on the object behind the tunnel excavation direction. A total station equipped with a light-wave range finder for measuring the distance, and a controller for controlling the direction of the laser light and the light wave radiated by the first laser oscillator and the light-wave range finder is installed, and a position facing the facet is provided. Is provided with a drilling device for drilling the hole, and the lightwave incident from the lightwave rangefinder is directed to the lightwave rangefinder ahead of the total station in the excavation direction. Light beam receiver that emits a beam, a laser receiver that detects the irradiation position of the laser light emitted from the first laser transmitter, and a second laser transmitter that emits laser light based on hole arrangement data. And a control device for controlling the direction of the laser beam emitted by the second laser transmitter, and a hole position irradiating device is installed, and the second laser transmitter is the face face. A drilling position display system characterized by being placed at a position where laser light can be applied to the entire surface. 4. The drilling position display system according to claim 3, wherein the second laser transmitter, the light wave receiver, and the laser receiver of the drilling position irradiating device are integrally provided in the drilling device. A drilling position display system characterized by