JPH03148003A - Continuous projecting system of working face by laser beam - Google Patents

Abstract

PURPOSE:To dig a tunnel correctly by providing a plurality of intermediate targets via a target pedestal between a reflecting mirror and a face of the tunnel and, providing an operating apparatus for remote-controlling a laser scanner near the face of the tunnel. CONSTITUTION:When a power switch of a regulator 20 is turned ON to drive a laser scanner 10, a laser beam 60 is projected. This beam 60 is polarized along a direction of an axis of the tunnel through a reflecting mirror 30, passing through a through-hole of an intermediate target 40, to a face 2 of the tunnel to be irradiated with a laser spot 70. Thereafter, an operational personal computer controls the rotation of the scanner to project the beam 60 to the face 2 through a plurality of mirrors 30 and targets 40. Accordingly, a reference cross section to dig the tunnel which is drawn by nearly continuous points is projected to the face 2 by the spots 70. Therefore, a correct digging line can be obtained by the spots 70, and this digging line can be used as a guide to dig the tunnel, thus improving the digging accuracy and efficiency.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides a laser that can display the outline of a tunnel cross section near continuous points by irradiating a laser beam onto the tunnel face being excavated during tunnel construction. The present invention relates to a beam face continuous projection system.

(Conventional technology) As NATM has become mainstream in tunnel construction in recent years, the accuracy of tunnel construction has come to have a significant impact on its quality, economy, and workability. ing.

Among these, labor-saving measures have been achieved in some areas due to the development of mechanical instruments, computers, etc., and this has been rationally fed back into the construction process. However, although there are cases in which two or three lasers are used when erecting a shoring, when there is a shoring, the positioning of the excavation section outer shell is difficult.
The current practice is to use what was previously built as a ruler, or if there is no shoring, use a light gauge etc. to paint the excavation line on the face and use it as a ruler for excavation.
When excavating the face and positioning the shoring,
The actual situation is that each site worker is glued to the face and managing it.

<Problem to be solved by the invention> In the current situation as described above, the accuracy of tunnel construction, that is, the quality of excavation, depends on the sensory skills of the workers, and the efficiency of excavation work, the efficiency of shoring work, and This is an important factor that influences the amount of excess excavation, etc.
Even in the conventional laser usage example, one laser was only used for one spot, and to obtain multiple spots, multiple lasers had to be used, which caused problems such as poor economic efficiency. .

The present invention was proposed to solve the above problems,
The purpose of this invention is to improve the efficiency of excavation work and shoring work, improve construction quality such as reducing the amount of over-excavation, and to obtain a highly economical laser beam continuous face projection system.

<Means for Solving the Problems> In order to solve the above problems, the laser beam face continuous projection system of the present invention installs a reference mount in the tunnel excavation cross section, rotates the reference mount along the tunnel axis, A laser scanner that emits a laser beam perpendicular to the tunnel axis, and a plurality of reflective mirrors along the tunnel excavation cross section that polarize the laser beam from the laser scanner and project it onto the tunnel face surface are installed, and the reflective mirrors and a plurality of intermediate targets corresponding to reflecting mirrors installed between the tunnel face via a target mount, and an operating device capable of remotely controlling the laser scanner near the tunnel face. It is something.

<Function> Since the laser beam face continuous projection system according to the present invention is configured as described above, a laser beam is irradiated from a laser scanner, polarized by a reflecting mirror, and directed to the correct target via an intermediate target. By using this laser spot and operating the laser scanner as appropriate, such as rotating the laser scanner with the operating device, stopping at any position, and rotating back and forth between any positions, multiple reflecting mirrors can be projected. , it is possible to display a tunnel cross section close to a continuous point on the tunnel face being excavated through an intermediate target, and by using this laser spot as a guide, accurate Can perform excavation, positioning of shoring, etc.

<Embodiments> Examples of the present invention will be described below based on FIGS. 1 to 7.

Figure 1 is a diagram showing how this system is installed inside a tunnel.
Figure 2 is a configuration diagram of this system, and Figures 3 to 7 are external views of each device that makes up this system. In the figure, l is a tunnel, 2 is a tunnel face, and 3 is a cross section of the tunnel a reference frame having a mounting base 4 installed along the
5 is a target mount installed at an appropriate position between the reference mount 3 and the tunnel face 2 along the tunnel cross section.

A laser scanner 10 and a regulator 20 for controlling the laser scanner 10 are installed on the mounting base 4 of the reference frame 3.

The laser scanner 10 rotates along the tunnel axis,
It is a vertically rotating laser scanner that irradiates a laser beam perpendicular to the tunnel axis.
．． Leveling stand 12. The main body 15 has a control cable insertion 13 and a focus 14, and also has a built-in laser tube, collimator, high voltage power supply, pulse motor, etc. Rotating head 16 which is the laser beam irradiation part
It is composed of etc.

The regulator 20 controls the laser scanner 10, has a built-in amplifier circuit, and has a power supply (AC100V).
) is connected to the power cable 21. Power switch 22.
It has a control cable 23 that is connected to the laser scanner 10, and an operation cable 24 that is connected to an operation personal computer that will be described later.

In addition, a plurality of reflecting mirrors 30 are installed on the reference frame 3 along the tunnel cross section for polarizing the laser beam from the laser scanner IO and projecting it onto the tunnel face 2. The reflecting mirrors 30 are shown in FIG. As shown, it is comprised of a mounting bracket 31 for mounting on the reference frame 3, horizontal adjustment parts 32, 33, an elevation adjustment part 34, and a mirror 35.

Further, on the target mount 5, a plurality of intermediate targets 40 or a plurality of reflecting mirrors 30 are installed along the tunnel cross section to confirm whether the target laser spot is in the correct position. , this intermediate target 40 has a mounting bracket 41 to the frame 5 and a horizontal adjustment part 42.
．． It consists of a vertical adjustment section 43 and a target 45 having a laser beam passage hole 44.

50 is placed near the tunnel face, and the laser scanner IO is connected to the operating cable 24. An operating computer that can be remotely controlled via the regulator 20, a signal width circuit, a power adapter 51. It includes a keyboard 52 and the like, and performs operations such as rotating the laser scanner 10, stopping it at an arbitrary position, and rotating it back and forth between arbitrary positions.

In the above configuration, when the power switch 22 of the regulator 20 is turned on and the laser scanner 10 is activated,
60 laser beams are irradiated. This laser beam 60 is irradiated perpendicularly to the tunnel axis, enters the reflection mirror 30, is polarized in the direction along the tunnel axis, passes through the passage hole 44 of the intermediate target 40, and is projected onto the tunnel face 2 as a laser spot 70. Ru.

Here, an intermediate target 40 is provided between the reflecting mirror 30 and the tunnel face 2, the laser beam passes through the target 40, and it is confirmed whether the target laser spot 70 is projected at the correct position. If it does not pass the target, make the necessary adjustments.

After confirming that the target laser spot 70 is projected in this manner, the operation computer 50 is operated to control the rotation of the laser scanner 10, and the plurality of reflecting mirrors 30. By irradiating the tunnel face 2 with a laser beam 60 via the intermediate target 40, it is possible to project and display a tunnel excavation reference cross section close to a continuous point on the tunnel face 2 using a laser spot 70.

Therefore, an accurate excavation line can be obtained using the laser spot 70, and this can be used as a guide for excavation or positioning of shoring, thereby improving tunnel construction accuracy and efficiency. can.

In addition, the operation of laser spot projection is performed by the operating computer 50.
This enables continuous rotation, stopping at arbitrary positions, repeated rotation between arbitrary positions, etc., as appropriate, and by adding a reflecting mirror 30, etc., it is possible to use the cross section with a complex shape.

(Effects of the Invention) As explained above, according to the laser beam face continuous projection system according to the present invention, a tunnel cross section close to continuous points can be projected and displayed on the tunnel face using a single laser scanner. Therefore, accurate excavation can be performed using this as a guideline, and the quality, economic efficiency, and workability of tunnel construction can be significantly improved by improving excavation efficiency, reducing excess excavation, and improving the accuracy and efficiency of shoring construction. be able to.

In addition, only one laser scanner is required, which is economical in terms of equipment costs, and can be easily used to measure the face cross section and spray thickness at any point. It can also be used to improve.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the installation state of the system according to the present invention in a tunnel, FIG. 2 is a system configuration diagram, and FIGS. 3 to 7 are diagrams showing the external appearance of system component equipment. Figures 3 (a) and (b) are external views of the laser scanner, Figures 4 (a), (b), and (c) are external views of the regulator, and Figures 5 (a) and (b) are reflective mirrors. External view: 0 Figures 6(a) and 6(b) are external views of the intermediate target, and Figure 7 is an external view of the operating personal computer. 1...Tunnel, 2...Tunnel face. 3...Reference frame, 4...Mounting base. 5...Target mount. 10... Laser scanner. 20...Regulator, 30-...Reflection mirror 40...Intermediate target, SO-...Operation personal computer. 60... Laser beam, 70... Laser spot.

Claims (1)

[Scope of Claims] A laser scanner that installs a reference frame in a cross section of a tunnel excavation, rotates along the tunnel axis and irradiates a laser beam on the reference frame perpendicular to the tunnel axis, and a laser beam from the laser scanner. a plurality of reflecting mirrors along the tunnel excavation cross section that polarize and project the polarized light onto the tunnel face, and a plurality of reflecting mirrors corresponding to the reflecting mirrors installed via a target mount between the reflecting mirror and the tunnel face. A laser beam face continuous projection system comprising: an intermediate target; and an operating device capable of remotely controlling the laser scanner near the tunnel face.