JPS603510A - Method and device for measuring tunnel boring section by laser light - Google Patents

Abstract

PURPOSE:To process graphically a tunnel boring section, and to confirm exactly, quickly and clearly errors of the boring section by providing a laser light generating device and a light emitting device, and photographing the shape of a section to be measured, to which laser light is irradiated from a position separated in the vertical direction from the section to be measured, and light of the light emitting device. CONSTITUTION:A laser light generating device 1 is placed on a triped base 3, and installed so that laser light from a generating hole 5 irradiates radially each wall surface of a section to be measured 7. Subsequently, a light emitting device is provided at a prescribed distance on a prescribed position in this section to be measured. The prescribed position, for instance, is only necessary to make a distance from some reference clear, and the laser light generating device 1 is placed on a position on a prescribed distance in the vertical upper direction from a middle point of two surface reference points G1, G2, and light emitting electric lamps 9a, 9b serving as two light sources are placed on a position separated by lcm each (for instance, 50cm) by being divided from this laser generating device. Subsequently, switches of the laser light generating device 1 and the light emitting devices 9a, 9b are turned on, and photographing is executed by a camera 11. In this way, the shape of the section to be measured, to which laser light is irradiated, and light of the light emitting device are photographed, and this photographed picture is subjected suitably to scaling processing, and an actual boring section is compared graphically with a planned section.

Description

[Detailed Description of the Invention] The present invention relates to a measuring method and device using a laser beam, and in particular, to a measuring method and device thereof, which allows cross-sections of tunnel excavation to be compared graphically on an H11 screen, and is accurate, quick, and at a glance. This made it possible to recognize an 8 gi difference in the excavation cross section.

The conventional measurements using Transira 1~ are as follows:
As with general civil engineering work, it is also effective for 1-channel excavation work. However, it is quite difficult to determine the shape of an excavated cross section using this conventional measurement method. This is because in order to determine the shape, it is necessary to obtain the measurement points for the number of grasses (
Prebo: ``I came up with the idea of doing long-term, dense measurements.However, the way to use this C 11'-ray is to easily obtain a level line in υ2, J work, for example. (Stays at 〒11.)

The present invention improves the problems of the measurement method in tunnel work as described above, and makes it possible to accurately, quickly, and clearly check the errors in the excavation cross section by effectively using a ray beam. We are trying to find a measurement method.

The characteristics of the measuring method and device according to the present invention for covering the above-mentioned [-1 target] soil are as follows. - At the same time, take a photo of the cross-sectional shape of the object to be measured illuminated by light Gj and the light of the light emitting device by 1m, and take the IR-shadowed photo) The actual excavation cross section and 611
A graphical comparison with the screen is shown below. Also, to this book J) i! Features of equipment for I-leaving (Maki's point I:
J, , h'l Ray that can be scanned in CJ shape
IJ''-Issuing devices that display a predetermined distance via arms are installed at both ends of the light beam generating device.

Below is a detailed explanation of this invention! I will give an example and explain it in detail and concretely.

An overview of the arrangement of position measurement devices will be explained using FIG. The Ir beam generator 1 is placed on top of the second base 3, and the +7"- beam from the generation hole 5 is applied to each wall surface of the cross section 7 to be measured.
: Install so that the light is 6J in the shape of the radiation Q = I.

Next, a light emitting device is provided at a predetermined distance within the cross section to be measured. It suffices if the predetermined 1i/position II, for example, the distance 68Ij from a certain reference point, is clear, and as in this example, from which intermediate point of the two ground surfaces JJ il1 points G1 and 02, a predetermined pressure point 1j1 vertically upward can be determined. jj to said leh ij
``-ray generation)
buy The distance between the light-emitting devices N is IJ1m. Next, the force beam 11 is placed 11- at a position fL, which is 101n away from the cross section 7 to be measured in the normal direction.

Regarding the arrangement of these devices, 2. ili point G+
.

The base IE 431j 13 is determined first from G2, and one laser beam generator and one camera are placed on this reference line 130.
It is efficient to place the light emitting devices 9a, 91+3- at equal intervals on the left and right from the position of the laser beam generator. Also, regarding straight tunnels, use this L↓'! 'If the MW 13 can be irradiated with a curved straight laser beam from the front of the 1-Hennel, the arrangement is extremely simple.

Next, the laser beam generating device 1, the light emitting device 9a,
Turn on the 9h switch and take a photo with camera 11. This photo looks like Figure 2. 19a.

19b shows images of the light emitting devices 9a and 9b.

The distance between shadow fgA19 a and 19b is exactly 1 m,
It is clear that it is horizontal to the horizon, for example the line connecting reference points G+ and G2. Therefore, from this image, the reference point G1. G2 is round. If this is transcribed proportionally onto sexy paper, it will look like Figure 3. From this figure, it can be seen that there is an error of, for example, 5 cm on the right side and 1QcII+ on the left side with respect to the actual cross section 7 (,t) and the planned cross section 15.The entire cross section can be seen at a glance with one translation.

Note that the positions of the light emitting bulbs 9a and 9b do not necessarily have to be <7b if they are placed on the horizontal axis. That is, G+,
Any position that can determine the location of G2 is sufficient.

-4 = In general, it is convenient to place the 1 norther light source in the center since it is used integrally with the 1 norther light source. In other words, a laser beam that can be scanned The generating device 1 is equipped with an issuing device via an arm on both sides (J is good. This arm can be attached to the laser beam generator 1) (flexible or foldable, making it a convenient device to carry). do.

In the past, if you wanted to measure an accurate cross section, at least two surveying engineers would use a transit and a scale, etc. to hold the fire for a long time and measure it. It can be done by one worker and the time required for the measurement (
It is extremely efficient, requiring only - for one reason. Moreover, the measurement results are clear and accurate at a glance as described above in FIG.

It should be noted that the above-mentioned working time can be further shortened by pre-glazing the device which is integrally equipped with the light emitting devices 9a and 9b at a predetermined distance from the scanning laser beam generating device.

A laser beam generator is installed in the excavated tunnel to radially illuminate the cross section to be measured. Il, lJ l'', J, the measured object [Il1] is vertically shaded from the (-! 1. Tunnel excavation by laser beam characterized by photographing the light of Excavation surface tl!'
That's it, iE fi! You can quickly and clearly check the difference in the excavated cross section.

'l, l''<l rfri no1ii7ri'j%(
Figure 1 shows one embodiment of the present invention, and is an explanatory diagram showing the arrangement of the Rayleigh light t, i: generator, light emitting system, and photo display device. An explanatory diagram showing an example of ``IJ''. Figure 3 is a scaled image of the photograph in Figure 2.
] An explanatory diagram showing the situation.

1...Ray light beam generator 3...Tripod stand 5...Hikari'I 717...Excavation sectional view Da of actual maki 1, fQ photoelectric Ill for 911? 11-...) J Mera'I 5-= 1ilIillii K 17ri"I
9a, -I Dll ・=l+1jlcS hri luminescence 7 11: ノFA't Image G+, G2...
Part 1F-! 1'7 Special 6'F Applicant I] Hon Um (O, Formula company agent Patent attorney 20T Yasuo's agent Patent attorney Miyoshi 31 et al. Tl17- Possible l -5゜10 - Figure 2 Figure 8

Claims (2)

[Claims] (1) A radar beam generating device is installed in the excavated tunnel to radially cover the cross section to be measured, and a photograph is taken of the full surface shape showing a predetermined interval at a predetermined position in the cross section to be measured and the light from the light emitting device. A method for measuring an excavation cross section using a laser beam, which is characterized by taking a photo, scaling the removed photograph, and graphically comparing the actual excavation cross section and the planned cross section. (2) Tunnel excavation cross-section measurement side L characterized by having a light emitting device that displays a predetermined distance via an arm on both sides of a laser beam generator that can jump.