JP3570980B2 - Tunnel tunnel imager - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a photographing apparatus for a tunnel wall, and more particularly, to a photographing apparatus for a tunnel wall mounted on a tunnel excavator such as a TBM (tunnel boring machine).
[0002]
[Prior art]
Conventionally, as a method of recording a tunnel wall immediately after excavation by, for example, a TBM, visual sketching or photographing with a digital camera, a silver halide camera (normal steel camera), or the like has been performed.
[0003]
[Problems to be solved by the invention]
However, there is a problem that it takes too much time with the conventional visual sketch. In addition, in the case of photographing with a digital camera or a silver halide camera, a worker operates one camera to perform photographing, so that the range that can be recorded in one photographing is small, and the tunnel wall for one excavation length by TBM is used. In order to take a photograph, the photographing range must be divided into several times, and these photographed images must be joined together.
[0004]
In this case, since it is a manual operation, it takes time and effort, and since the photographing position of the camera is different for each image, there is a problem that a developed image formed by joining these images includes distortion. .
[0005]
In addition, in order to minimize distortion in the developed image, it is necessary to take pictures while taking into account the connection at the time of photographing, and there is a problem that the efficiency of photographing is reduced. Furthermore, since the digging operation by the tunnel digging machine cannot be performed during the photographing, there is a problem that the construction period of the tunnel digging is extended.
[0006]
SUMMARY OF THE INVENTION An object of the present invention is to solve such a problem, and it is possible to reduce the time required for shooting, shorten the shooting time, and easily correct the distortion of a shot image. An object of the present invention is to provide a photographing device for a pit wall.
[0007]
[Means for Solving the Problems]
The present invention is a photographing device for a tunnel pit wall, and is configured as follows to solve the above-described technical problem. That is, the present invention is a photographing apparatus for photographing a tunnel digging wall excavated by a tunnel digging machine, wherein a camera holding stand attached to a surface of the tunnel digging machine facing the tunnel digging wall, A plurality of CCD cameras or digital cameras attached to the camera holding base and arranged in a line along the circumferential direction of the tunnel well wall, and waterproof and dustproof of the plurality of CCD cameras or digital cameras. And a computer for simultaneously controlling the photographing operations of the plurality of CCD cameras or digital cameras.
[0008]
According to the tunnel wall photographing apparatus, by controlling the photographing operations of a plurality of CCD cameras or digital cameras at the same time by a computer, a necessary area of the tunnel wall, for example, one excavation length of a tunnel excavator, and A relatively wide range in the circumferential direction of the tunnel can be photographed at a time. Further, since the photographed image is transmitted as a digital signal, by processing the digital signal with a computer, the image photographed obliquely with respect to the tunnel wall can be easily corrected.
[0009]
Next, each component will be described.
(Tunnel excavator)
Applicable to almost all tunnel excavators, full section excavators and free section excavators, but is particularly suitable for all types of TBMs. In the TBM, the portion where the camera is attached is separated to some extent from the tunnel pit wall, and the interval is kept constant, so that image processing becomes easy.
(Camera stand)
A plurality of CCD cameras or digital cameras are arranged and held in a line in the tunnel circumferential direction, and in order to adjust the photographing range in the tunnel circumferential direction by these cameras, the base in which the CCD camera or digital camera is fixed in the tunnel circumferential direction is adjusted. One provided with an angle adjusting means for adjusting the mounting angle can be exemplified.
(CCD camera or digital camera)
In order to image-process a captured image by a computer, a charge-coupled device (CCD) camera or a digital camera that photoelectrically converts input light and outputs a digital signal is used. When a CCD camera is used, a digital signal is always transmitted to a computer, so that a tunnel can be constantly monitored by using a monitor.
(Transparent cover)
For example, one formed in a spherical shape with transparent acrylic or the like can be exemplified.
(Computer)
A small personal computer (hereinafter referred to as a personal computer) that is easy to handle and used at a tunnel excavation site is preferable.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a photographing device for a tunnel shaft wall according to the present invention will be described in detail with reference to the drawings.
[0011]
FIG. 1 is a view showing a state in which a photographing apparatus 1 for a tunnel pit wall according to the present invention is mounted on an improved open type TBM (tunnel boring machine) 10. The tunnel wall image capturing apparatus 1 captures an image of a tunnel wall 12 of a tunnel 11 excavated by the TBM 10. The ground of the tunnel 11 needs some degree of independence.
[0012]
The TBM 10 excavates the entire cross section of the tunnel 11 at one time, and includes a cutter head 10a, a main beam 10b that is a body, and a gripper 10c that presses the cutter head 10a by pressing against the pit wall 12. I have. The main beam 10b is provided with a thrust cylinder (not shown) for propelling the TBM 10. The TBM 10 is an improved open type, and is provided with a top roof 10d.
[0013]
The photographing apparatus 1 includes a photographing unit 14 attached to a surface of the main beam 10b facing the tunnel wall 12, a photographing personal computer 15 for controlling the operation of the photographing unit 14, and an image photographed by the photographing unit 14. And an image processing personal computer 16 for performing image processing.
[0014]
As shown in FIG. 2, the imaging unit 14 has a plurality of CCD cameras 17 and a camera holding table 18 that holds the CCD cameras 17. In the present embodiment, three CCD cameras 17 are provided, and each of these CCD cameras 17 has a predetermined range in the longitudinal direction of the tunnel shaft wall 12, in this case, at least a range corresponding to one excavation length of the TBM 10. L is to be photographed.
[0015]
As shown in FIG. 3, the CCD cameras 17 are arranged in a line at appropriate intervals along the circumferential direction of the tunnel 11. Then, by combining these three CCD cameras 17, a predetermined range in the circumferential direction of the tunnel pit wall 12, in this case, a range of the angle α around the optical axis set point of each CCD camera 17 is photographed. It has become.
[0016]
In the present embodiment, as shown in FIG. 4, one photographing unit 14 is attached to each of the left and right sides of the main beam 10 b of the TBM 10. The photographing unit 14 is configured to photograph a range of an angle (2 × β) in total from the center 19 of the top end of the tunnel 11 to the left and right sides in the circumferential direction by an angle β. The photographing angle β can be set to, for example, about 110 degrees.
[0017]
The camera holder 18 shown in FIG. 3 can adjust the photographing range of the CCD camera 17 in the circumferential direction. That is, the camera holding base 18 includes a base 20 fixed to the TBM 10, an adjusting screw 21 rotatably mounted on the base 20, and a base 22 rotatably mounted on an end of the base 20. A lever 23 having one end screwed into the adjustment screw 21 and the other end rotatably attached to the free end side of the base 22, and a handle 24 fixed to the end of the adjustment screw 21. The CCD camera 17 is fixed to the base 22.
[0018]
In the camera holding base 18, by rotating the handle 24, the adjusting screw 21 rotates, and the lower end in FIG. 3 of the lever 23 screwed into the adjusting screw 21 moves left and right. As a result, the upper end of the lever 23 moves up and down, the base 22 pivots about the lower end by a predetermined angle, and the relative angle in the circumferential direction with the tunnel wall 12 changes. Thus, the photographing range of the CCD camera 17 in the tunnel circumferential direction can be adjusted. The base 22 is provided with a spherical transparent cover 25 for waterproofing and dustproofing the CCD camera 17.
[0019]
As shown in FIG. 1, the images captured by the three CCD cameras 17 are constantly supplied to, for example, an imaging personal computer 15 installed in an operator room, and are constantly displayed on a monitor 26 thereof. Therefore, the operator of the photographing step control 15 can constantly monitor the state of the tunnel pit wall 12. When the operator operates the photographing personal computer 15 as needed and simultaneously controls the shutters of the three CCD cameras 17, the photographed image can be recorded on an appropriate recording medium such as the MO disk 21. .
[0020]
The floppy disk 21 is supplied to, for example, an image processing personal computer 16 installed in an office, where development of a development of the tunnel wall 12 and data management are performed.
[0021]
As the image processing, for example, an image obtained by obliquely photographing the tunnel wall 12 is corrected to an image viewed from the front, or individual photographed images of the CCD camera 17 are connected in the tunnel axis direction and the tunnel circumferential direction. Thus, a developed image of the tunnel wall 12 can be obtained. Also, an arbitrary range from the developed image can be output as an image file. Note that the photographing personal computer 15 and the image processing personal computer 16 can be connected online.
[0022]
As described above, according to the tunnel wall photographing apparatus 1 of the present invention, by controlling a plurality of CCD cameras 17 simultaneously, a necessary range of the tunnel wall 12, for example, one excavation length of the TBM 10, and A relatively wide range in the circumferential direction of the tunnel 11 can be photographed at a time. Therefore, it is not necessary to repeat photographing many times or to join photographed images, so that it is possible to greatly reduce labor.
[0023]
Further, since the photographed image is processed by the image processing personal computer 16, even when the tunnel wall 12 is photographed obliquely, distortion of the image can be easily corrected, and the state of the tunnel wall 12 can be accurately determined. it can.
[0024]
Further, since the photographing range of the CCD camera 17 in the circumferential direction of the tunnel can be adjusted by the camera holding base 18, even when the size of the TBM 10 or the tunnel 11 is changed, it is possible to respond quickly.
[0025]
In the above-described embodiment, the present invention is applied to the improved open-type TBM 10. However, the present invention is not limited to this. The present invention can be applied to all tunnel excavators such as a full-section excavator such as a shield type TBM other than the above, and a free-section excavator such as a cutter loader. However, in the free-section excavator, since the distance between the portion where the photographing unit 14 is mounted and the tunnel wall 12 changes, the image processing becomes somewhat troublesome.
[0026]
Further, the number of CCD cameras 17 used in the photographing unit 14 is not limited to three, but can be any number. Further, the number of photographing units 14 is not limited to two, and any number can be used. Further, a digital camera can be used instead of the CCD camera 17.
[0027]
【The invention's effect】
As described above, according to the present invention, by simultaneously controlling the photographing operations of a plurality of CCD cameras or digital cameras, a wide range in the circumferential direction of the tunnel is once set for one excavation length of the tunnel excavator, for example. You can shoot at Therefore, it is not necessary to repeat photographing or join photographed images as in the related art, so that labor can be saved.
[0028]
Further, since the photographed image is output as a digital signal, the image signal can be subjected to image processing by a computer, whereby the distortion of the image can be easily corrected. Therefore, the state of the tunnel pit wall can be accurately determined.
[Brief description of the drawings]
FIG. 1 is a view showing a state in which a photographing device for a tunnel wall according to the present invention is attached to an open-type TBM.
FIG. 2 is a view taken in the direction of arrow A in FIG. 1;
FIG. 3 is a sectional view taken along line BB of FIG. 2;
FIG. 4 is a diagram showing a shooting range of a CCD camera according to the present invention.
[Explanation of symbols]
1 imaging device 10 TBM (tunnel excavator)
DESCRIPTION OF SYMBOLS 11 Tunnel 12 Tunnel wall 15 Personal computer for photography 16 Personal computer for image processing 17 CCD camera 18 Camera holder 25 Transparent cover

Claims (5)

An imaging device attached to a TBM (tunnel boring machine) for taking an image of a tunnel pit wall excavated by a TBM ,
A camera holder attached to a surface of the TBM facing the tunnel pit wall;
In order to photograph the tunnel wall in a predetermined range in the circumferential direction of the tunnel with one excavation length of the TBM, the tunnel wall was attached to the camera holder and arranged in a line along the circumferential direction of the tunnel wall. A plurality of CCD cameras or digital cameras,
A transparent cover attached to the camera holding base for waterproofing and dustproofing the plurality of CCD cameras or digital cameras,
A computer for simultaneously controlling the shooting operation of the plurality of CCD cameras or digital cameras,
The camera holding base has a base for fixing the plurality of CCD cameras or digital cameras, and angle adjusting means for adjusting a relative angle of the base in the tunnel circumferential direction. An imaging device for a tunnel wall, wherein an imaging range of the CCD camera or digital camera in a circumferential direction of the tunnel is adjusted by adjusting an angle . 2. The image capturing apparatus according to claim 1, further comprising an image processing computer configured to perform image processing on an image captured by the CCD camera or the digital camera. The image capturing apparatus according to claim 2 , wherein an image obtained by obliquely photographing the tunnel wall is corrected to an image viewed from the front by the image processing computer. The photographing device of the tunnel mine wall according to claim 2 , wherein individual photographed images of the CCD camera or the digital camera are connected in a tunnel axial direction and a tunnel circumferential direction to obtain a developed image of the tunnel mine wall. . The photographing apparatus for tunnel wall according to claim 4 , wherein an arbitrary range is output as an image file from the developed image of the tunnel wall.

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