JPH11350868A - Displacement measuring system and method for excavation of tonnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically measure displacement of tonnel inner wall by performing compensation control of drive means so as to automatically collimate an object according to the image taken result of a image pick-up part, and carrying out measurement of displacement in the tonnel inner wall according to the output of result of collimation means under the state that the compensa tion control of the drive means is completed. SOLUTION: A measuring unit 10 having a CCD camera is installed in a covering part 310 by which an upper part of a tonnel 300 is covered. This unit 10 is remote controlled by the unit 110 if necessary. A measurement reference position 1 is set with a reference position 211 of a reference target 210 provided at the covering part 310 in the tonnel 300 serving as a reference. Subject positions 201-1 to 201-6 of targets 200-1 to 200-6 provided at the natural ground 392 or working faces 390 at a plurality of positions of a top end and a side wall of the tonnel inner wall are measured. Then, through the repeated measurement, the displacement of the tonnel inner wall can be measured. The purpose is attained in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a displacement measuring system and method for tunnel excavation.

[0002]

BACKGROUND ART AND PROBLEMS TO BE SOLVED BY NAT
In excavation of mountain tunnels using M and shoring, stable excavation and stable tunnels can be achieved by performing lining with stable displacement of excavated surfaces such as the top of the tunnel at the top of the tunnel and the side wall at the side of the tunnel. Is important in realizing the construction of

Conventionally, displacement of an excavation surface is measured by manually observing a plurality of collimated objects (targets) installed on a measurement surface such as a top end by a human, thereby measuring the displacement of the measurement surface. I was

[0004] However, it takes time to observe a plurality of points while tunnel construction is being performed, and it is difficult to secure a position for the observation work, which is an obstacle to excavation work.

In the case of manual observation, a measurement error may occur.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a measurement system and a method capable of automatically measuring a displacement in tunnel excavation, particularly a displacement of a tunnel inner wall.

[0007]

According to another aspect of the present invention, there is provided a displacement measuring system for collimating a collimated object installed on an inner wall of a tunnel, and the collimating means. A driving unit that changes the collimating direction of the control unit, a control unit that controls the driving unit, and a measuring unit that measures a position and a displacement of the collimated body based on an output result of the collimating unit. The collimating unit includes an imaging unit that images the collimated body, and the control unit automatically collimates the collimated body based on a result of imaging by the imaging unit. Performing the correction control of the driving means, the measuring means, in a state where the correction control of the driving means is completed,
The measurement is performed based on an output result of the collimating means.

According to the present invention, the position of the collimated object can be automatically measured. For example, when the collimated object is provided at the top of the tunnel, the displacement of the top can be automatically measured, and when the collimated object is provided at the side of the tunnel, the displacement of the side wall is automatically measured. Can be measured.

More specifically, for example, the position of the collimated object is specified by measuring the amount and direction of movement of the collimated object in a three-dimensionally set image captured by the imaging unit. , The amount of displacement can be measured.

[0010] Preferably, the collimating means can be remotely operated. According to this, since the measurement can be performed without a person entering the place where the collimating means is installed, the measurement can be performed safely without obstructing the excavation work.

It is preferable that the unit having the collimating means and the driving means is installed horizontally. According to this, by setting horizontally, it is not necessary to specify one of the three dimensions, and the position of the collimated object is easily specified.

Further, it is preferable to provide an alarm notifying means for notifying an alarm when the measured displacement exceeds a predetermined reference value. According to this, when there is a danger such as a tunnel collapse, the danger can be detected in advance.

According to a second aspect of the present invention, in the first aspect, the collimated object includes a light reflecting portion that indicates a collimated position, and the collimating means includes a light reflector that directs light toward the collimated object. And a light transmitting and receiving unit that receives reflected light from the collimated object, wherein the measuring unit measures the position and displacement of the collimated object based on a result of light transmission and reception by the light transmitting and receiving unit. It is characterized by.

According to the present invention, if the imaging unit recognizes the collimating position of the light reflecting unit once, the collimating position of the light reflecting unit can be automatically collimated, and the light transmitting / receiving unit can automatically collimate the collimating position. Light can be projected toward the collimated object. This makes it possible to measure quickly and accurately even when performing repeated measurements.

In this case, it is preferable that the imaging unit automatically corrects the collimating direction so that the collimating position of the light reflecting unit is positioned at the center of the image.

Specifically, for example, a distance from a predetermined measurement reference position to a collimation position is measured based on a result of light transmission / reception, and the distance within a three-dimensional set image captured by the imaging unit is measured. By measuring the moving amount and moving direction of the collimator, the position of the collimator can be specified.

In this case, it is preferable that the imaging unit, the light projecting unit of the light transmitting / receiving unit, and the light receiving unit of the light transmitting / receiving unit are formed so that the collimating axes coincide. Thereby, the correction process of the measured value can be omitted, and the measurement can be performed accurately. For example, by using a reflection mirror to switch the incidence on the reflection mirror, it can be formed so that the collimation axes coincide from a plurality of locations.

Further, as the light reflecting portion, a reflecting seal,
The one that reflects light such as a reflecting prism can be applied,
Preferably, it is a reflective seal. Since the reflection seal is lightweight and inexpensive, it is particularly effective when a large number of collimated objects are installed.

It is preferable that the light reflecting portion is, for example, one in which a cross is drawn in a circle and a center point is determined. According to this, it is easy to confirm the collimation position by setting the center point as the collimation position.

[0020] The invention described in claim 3 is based on claim 1,
2. In any one of 2), the measuring unit measures a position and a displacement of the collimated object based on a driving result of the driving unit.

According to the present invention, the position of the collimated object can be accurately measured even when the imaging section is not of high resolution.

As the driving result, a change caused by driving such as a vertical or horizontal driving angle of the driving means or a rotation speed of a gear used for driving can be applied as data.

The invention described in claim 4 is the first invention.
In any one of 3, the plurality of collimated objects are provided, and the control unit switches the driving unit such that the collimating unit switches and collimates the plurality of collimated objects in an arbitrary order. And the measuring means measures the position and displacement of the collimated body in the arbitrary order.

According to the present invention, a plurality of collimated objects can be measured in a predetermined order, so that the measuring operation can be automated and labor-saving. For example, by previously programming the order in which the collimated object is measured, automatic measurement can be performed at predetermined intervals using a timer or the like.

[0025] Further, the invention described in claim 5 provides the invention according to claims 1 to 5.
In any one of 4, the collimating means is driven and controlled to collimate a reference body indicating a reference position installed at a position where there is no displacement in the tunnel, and the measuring means is configured to control the collimated reference body. The position of the collimating means is measured based on a reference position.

According to the present invention, the measuring means can grasp its own position, that is, the measuring reference position, by recognizing the reference position. In addition, since the reference position itself does not move by installing the reference body in a position where there is no displacement, for example, inside a lining tunnel, the measuring means can accurately measure by recognizing the reference position. it can.

As the reference member, a reflection seal, a reflection prism, or the like can be used, but a reflection prism is preferable. According to this, even when the distance between the collimating means and the reference body is several hundred meters, the collimating means can collimate the reference body.

[0028] The invention according to claim 6 provides the invention according to claims 1 to
5 is used in a mountain tunnel.

In a mountain tunnel, a tunnel is excavated in a cycle of excavation, support, and lining. Since the inner wall of the tunnel is displaced during the excavation support stage, it is important to confirm the stability of the displacement.

According to the present invention, since the displacement of the collimated object provided on the inner wall of the tunnel can be measured automatically and accurately, it is particularly effective for measuring the displacement of the inner wall of the tunnel in a mountain tunnel.

As a method of constructing a mountain tunnel, there are a method using a support, a NATM, and the like, but it is particularly preferable to use the NATM. In addition, in the case of the method using the support, it is also possible to provide the collimated body on the support and measure the displacement of the collimated body.

Further, the invention according to claim 7 is the same as that of claim 1
6. The displacement measuring system described in any one of (6) and (5) is used for a method of excavating a part of a face of a face in advance, and the collimated body is provided on a section other than the part of the section, It is characterized in that the position and displacement of the quasi body are calculated.

According to the present invention, it is possible to measure the displacement of the other section where the excavation is stopped while excavating a part of the section of the face in advance.

For example, in the advanced shaft construction method, since the bottom is excavated first, there is a possibility that the upper ground collapses. In such a case, by measuring the amount of displacement of the upper cross section, collapse can be predicted in advance and collapse can be avoided.

The present invention is applicable not only to the bottom shaft advanced construction method, but also to a partial cross section excavation method other than the full cross section excavation method such as the side wall shaft advanced method (Silot method) and the short bench cut method. is there.

The invention according to claim 8 is the invention according to claims 2 to
6. In any one of 6, the device includes at least a unit in which the collimating unit and the driving unit are integrated, the unit includes a first detachable unit, and the collimated object rotates the light reflecting unit. A reflecting portion receiving portion for freely supporting, a supporting portion for rotatably supporting the reflecting portion receiving portion in a direction intersecting a rotation axis of the light reflecting portion, and a second attaching / detaching portion provided on the supporting portion. , Wherein the first detachable portion and the second detachable portion are detachably formed on a plurality of detachable bodies embedded in the ground.

According to the present invention, the light reflecting portion can be rotated in any direction by 360 degrees, and the light reflecting portion is directed to the collimating means regardless of the shape of the ground or the installation position of the collimating means. In addition to being able to perform accurate measurement, installation of the collimated body is facilitated and work efficiency can be improved.

In the case of moving the collimated body or the like, in the case of so-called refilling, the detachable portion of the collimated body is set on a new detachable body, and the detachable body on which the collimated body is set is mounted. In addition, by installing the detachable portion of the unit, the change of the arrangement is facilitated and the measurement is also facilitated.

That is, in the case of performing refilling, the ground on which the detachable body has been installed in which the collimated body has been installed is in a stable state with the displacement converged. There is no shift. In addition, since the position of the collimated body has been measured, it is easy to reset the measurement reference position even if the unit is installed at the place where the collimated body was.

A displacement measuring method according to a ninth aspect is a displacement measuring method for measuring the displacement of a plurality of collimated objects provided in a tunnel, wherein the collimating means observes each collimated object. A second step of automatically switching and controlling the quasi-direction in a predetermined order, and a second step of measuring the position of each collimated object in the sighting direction; Corrects the collimation direction so that the collimated object is imaged using an imaging unit provided in the collimation unit, and the collimation unit automatically collimates the collimated object. Controlling, and in a state where the correction control is completed, including a step of measuring a position of the collimated object based on an output result of the collimating means, wherein the first step and the second step By repeating the steps, the displacement of each of the predetermined collimated objects is measured.

According to the present invention, the positions and displacements of all the collimated objects can be measured while switching the collimation direction for a plurality of collimated objects.

In this case, if the original collimated position is different from the collimated position, the collimated axis is corrected so that the collimated body is always automatically imaged even when displaced. And it is possible to collimate.

For example, when the collimated object is provided at the top of the tunnel, the displacement of the top can be automatically measured. When the collimated object is provided on the side wall of the tunnel, the displacement of the side wall can be measured. Can be measured automatically.

[0044]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a preferred embodiment of the present invention will be described in detail with reference to the drawings, using an example in which the present invention is applied to a mountain tunnel using NATM.

(First Embodiment) In excavation of a mountain tunnel using NATM, lining is performed in a state where displacement of an excavation surface such as a top end corresponding to an upper portion of a tunnel or a side wall corresponding to a side of a tunnel is stabilized. It is important to realize stable excavation and stable tunnel construction.

FIG. 1 is a diagram showing the relationship between the measurement period from the measurement start date and the displacement of the inner wall of the tunnel.

Reference numerals 510 to 530 shown in FIG. 1 indicate displacements of the top end, the right side wall and the left side wall of the tunnel, respectively.

As shown in FIG. 1, the displacement amount is about 20 mm, but it takes about one month until the displacement is stabilized, and it may take several months depending on the ground. Traditionally, displacement measurement has been performed manually, so measuring displacements at multiple locations for several months is a great effort,
This hindered the excavation work and caused measurement errors.

FIG. 2 is an overall view of a displacement measuring system according to an example of the present embodiment.

In the present embodiment, as shown in FIG.
A measurement unit 10 having a CD camera or the like and performing measurement
The support section 8 is installed on the lining section 310 which has been lining at the top of the tunnel 300.

By remotely operating the measuring unit 10 by the remote control unit 110 as needed, the measurement can be performed without hindering the excavation work.

The measuring method is based on the reference position 2 of the reference target 210 which is a reference body provided in the lining section 310 in the tunnel.
11, the measurement reference position 1 is set, and the ground 392 and the face 39 at a plurality of locations such as the top and side walls of the inner wall of the tunnel are set.
The displacement of the inner wall of the tunnel is measured by measuring and repeatedly measuring the collimation positions 201-1 to 201-6 of the targets 200-1 to 6 that are the collimated bodies provided at 0. The measurement method will be described later.

FIG. 3 is an external view of the measuring unit 10 according to an example of the present embodiment.

The measuring unit 10 includes a collimating unit 50 for collimating the target 200, and a driving unit 90 for changing the collimating direction of the collimating unit 50.

Further, the collimating unit 50 includes an imaging unit for imaging the target 200. In the present embodiment, the imaging section includes a CCD camera 52 and a wide camera 51. Target 200 by wide camera 51
Of the target 2 by the CCD camera 52
00 can be accurately collimated.

The collimating unit 50 is driven by the driving unit 90.
It is formed so as to be freely rotatable in a vertical direction 600 and a horizontal direction 602. Further, not only remote operation but also direct operation of the collimation unit 50 is possible by the operation panel 42.

FIG. 4 is a functional block diagram of a displacement measuring system according to an example of the present embodiment.

The above-described measuring unit 10 includes an imaging unit 60 including a CCD camera 52 and a wide camera 51, a collimating unit 50 having a light transmitting / receiving unit 70, a driving unit 90, and control signals from a remote operation unit 110. And a communication unit 20 for transmitting the collimation result to the remote control unit 110.

The light transmitting / receiving section 70 of the measuring unit 10 sends light toward the target 200 and receives reflected light from the target 200.

The remote control unit 110 includes the light transmitting / receiving unit 70
The position and the displacement of the target 200 are measured based on the result of the light transmission / reception by the target.

The remote control unit 110 has a switching control unit 132 having a control function of controlling the drive unit 90.
And a correction control unit 134, and a position measurement unit 142 and a displacement measurement unit 144 having a measurement function of measuring the position and displacement of the target 200 based on the output result of the collimation unit 50 received by the communication unit 120. Have been.

FIG. 5 is an external view of a target 200 according to an example of the present embodiment.

The target 200 has a light reflecting portion 202 indicating a collimating position 201, a reflecting portion receiving portion 204 for rotatably supporting the light reflecting portion 2002, and a reflecting portion receiving portion 204 which is rotatable about the rotation axis of the light reflecting portion 202. And a support portion 206 that rotatably supports in an intersecting direction.

According to this, the light reflecting portion 202 can be rotated in the vertical direction 604 and the horizontal direction 606, that is, in a free direction of 360 degrees, depending on the shape of the ground 392 and the installation position of the collimating portion 50. Instead, the light reflecting section 202 can be directed to the collimating section 50, and accurate measurement can be performed.

Here, as the light reflecting portion 202, a light reflecting member such as a reflective seal or a reflective prism can be used, but a reflective seal is preferable. Since the reflection seal is lightweight and inexpensive, it is particularly effective when a large number of targets 200 are installed.

It is preferable that the light reflecting portion 202 is, for example, one in which a cross is drawn in a circle and a center point is defined as shown in FIG. According to this, the center point is set at the collimation position 2
By setting it to 01, the collimation position 201 can be easily confirmed.

As the reference target 210, a reflective seal, a reflective prism, or the like can be used, but a reflective prism is preferable. According to this, even when the distance between the collimating unit 50 and the reference target 210 is several hundred meters, the collimating unit 50 can collimate the reference target 210. Hereinafter, the operation of the collimating unit 50 and the like will be described based on the flow of the displacement measurement.

FIG. 7 is a flowchart showing a displacement measuring procedure according to an example of the present embodiment.

First, a measurement reference position is set (step 6). As the measurement reference position, the reference position 211 of the reference target 210 may be used. Alternatively, if the measurement proceeds and the absolute position of the measurement unit 10 is known, the measurement reference on the collimation axis of the measurement unit 10 may be used. Position 1 may be used.

By recognizing the reference position 211, the measurement unit 10 can grasp its own position, that is, the measurement reference position 1. In addition, reference target 2
Since the reference position itself does not move by installing the position 10 without displacement, for example, inside a lining tunnel, the measurement unit 10 recognizes the reference position 211 and Can be set accurately.

It is preferable that the measuring unit 10 is installed horizontally. According to this, since it is installed horizontally, it is not necessary to specify one of the three dimensions, and the position of the target 200 can be easily specified.

If it is necessary to switch the collimation direction after setting the measurement reference position (step 8), the collimation direction is switched (step 10). For example, in FIG. 2, the case where the collimation direction is switched from the target 200-1 to the target 200-2 corresponds to this case.

The switching of the collimating direction is performed by the switching control unit 132 of the remote control unit 110 by the drive unit 90.
This is performed by controlling the collimating unit 50 via.

Thus, the collimating direction can be automatically switched.

Next, the target unit 20 is
0 is imaged (step 12). Specifically, the target 200 is imaged by the CCD camera 52.

As a result of imaging, the target collimation position 20
If 1 deviates from the original collimation position, the collimation axis is corrected (step 14).

More specifically, the correction control unit 134 of the remote control unit 110 controls the collimation unit 50 via the drive unit 90.
Is corrected.

When the correction control is completed and the collimation is determined,
The light transmitting / receiving unit 70 sends light toward the target 200 and receives the reflected light from the light reflecting unit 202 of the target 200.

In this case, it is preferable that the imaging unit 60, the light projecting unit of the light transmitting / receiving unit 70, and the light receiving unit of the light transmitting / receiving unit 70 be formed so that the collimating axes coincide. Thereby, the correction process of the measured value can be omitted, and the measurement can be performed accurately.

For example, by using a reflecting mirror to switch the incidence on the reflecting mirror, it is possible to form the collimating axes from a plurality of locations so as to match.

Position measuring section 14 of remote control unit 110
2 measures the position of the target 200 based on the light transmission / reception result and the driving result of the driving unit 90 (step 1).
8).

Specifically, for example, the distance from a predetermined measurement reference position 1 to the collimation position 201 is measured based on the result of light transmission / reception, and the direction of the target 200 is measured based on the result of driving by the driving unit 90. Thus, the position of the target 200 can be accurately measured.

As a driving result, a change caused by driving such as a driving angle of the driving section 90 in the vertical direction 600 and the horizontal direction 602 and a rotation speed of a gear used for driving can be applied as data.

After the position measurement (step 18), the displacement is measured by the displacement measuring section 144 of the remote control unit 110 (step 20).

The displacement measurement is performed by calculating how much the target 200 is at the first measurement position based on the position measurement result. For example, the displacement measurement result is as shown in FIG. 1 described above.

When the measured displacement exceeds a predetermined reference value, an alarm can be sounded by an alarm notifying unit (not shown) for notifying an alarm. According to this,
If there is a danger such as a tunnel collapse, the danger can be detected in advance.

Normally, the processing from switching of the collimation direction to measurement of displacement (steps 10 to 20) is repeated for each target 200.

When the measurement is no longer necessary (step 2), the measurement ends.

With the above configuration, the following operation and effect can be obtained.

First, the position of the target 200 can be automatically measured. For example, when the target 200 is provided at the top of the tunnel 300, the displacement of the top can be automatically measured, and when the target 200 is provided on the side of the tunnel, the displacement of the side wall can be automatically measured. .

First, if the imaging unit 60 recognizes the collimation position 201 of the light reflection unit 202 once, the collimation position 201 of the light reflection unit 202 can be automatically collimated and the light transmission / reception unit 7 can be recognized.
With 0, light can be automatically projected toward the target 200. This makes it possible to measure quickly and accurately even when performing repeated measurements.

Further, since a plurality of targets 200 can be measured in an arbitrary order, the measuring operation can be automated and labor-saving. For example, by programming the order in which the targets 200 are measured in advance, automatic measurement can be performed at predetermined intervals using a timer or the like.

Further, even when manual operation is required at the time of initial setting or the like, remote operation by the remote operation unit 110 enables operation in a safe place without an excavator or a rear bogie.

Further, even in the case of so-called rearrangement, the rearrangement can be performed quickly.

As shown in FIGS. 3 and 5, the measuring unit 10 is provided with a screw portion 18 as a first attaching / detaching portion, and the target 200 is attached to the support portion 206 by the second attaching / detaching portion. A thread 208 is provided.

The screw portion 18 and the screw portion 208 are
Screw receiving portion 2 which is a plurality of attached / detached objects embedded in
20 is detachably formed.

Thus, the installation of the measuring unit 10 and the target 200 is facilitated, and the working efficiency can be improved. In particular, in the case of refilling, the displacement is stable, and the screw receiving portion 2 having the target 200 already measured is provided.
By installing the measurement unit 10 in the measurement unit 20, the measurement of the absolute position of the measurement unit 10 is not required, and quick change and measurement can be performed.

It is to be noted that the detachable portion is not limited to screws, but may be a combination of concave and convex portions, or a method of installation on a box.

(Second Embodiment) FIG. 6 is an overall view of a displacement measuring system according to another example of the present embodiment.

FIG. 6 shows an example in which the displacement measuring system is applied to a bottom shaft advanced construction method.

In the advanced shaft construction method, since the bottom face 390-1 is excavated in advance, the upper ground 392 is excavated.
Collapse may occur. In such a case, by measuring the amount of displacement of the cross section of the upper face 390-2,
Collapse can be predicted in advance and collapse can be avoided.

In this embodiment, the target 200-2 is provided on the section of the face 390-2 on the inner wall of the tunnel so that the displacement of the section of the upper face 390-2 can be measured. By measuring the displacement of the target 200-2, the collapse of the upper ground 392 can be predicted in advance.

According to this, it is possible to measure the displacement of the other section where the excavation is stopped while excavating a part of the section of the face 390 in advance.

That is, in addition to the bottom shaft advanced construction method,
The method is applicable to a method of excavating a partial cross-section other than the entire cross-section excavation, such as the advanced side wall tunneling method (Silot method) and the short bench cut method. In addition, if the measurement is performed during the stop of excavation such as refilling, the present invention can be applied to excavation of all sections.

(Modification) The application of the present invention is not limited to the above embodiment.

For example, in the above-described embodiment, an example in which one reference target 210 is provided has been described, but a plurality of reference targets 210 may be provided.

If at least two reference targets 210 are provided and the positions of the two reference targets 210 can be confirmed by the measurement unit 10, the measurement reference position 1 of the measurement unit 10 can always be obtained.

Further, in the first embodiment, the position of the target 200 is obtained based on the light transmission / reception result and the driving result. However, the target is obtained based on the imaging result of the imaging unit 60 or the light transmission / reception result in addition to the imaging result. It is also possible to determine a displacement of 200.

As the former displacement measuring method, for example, the displacement of the target 200 can be obtained from the moving direction and the moving amount of the position of the target 200 in the image by using the imaging unit 60 with the measured high resolution.

As the latter displacement measuring method, for example, a distance from a predetermined measurement reference position to a collimation position is measured based on a result of light transmission / reception, and an image is taken by the imaging unit 60.
By measuring the moving amount and moving direction of the target 200 within the three-dimensionally set image, the position of the target 200 can be specified, and the displacement can be measured.

Further, the above-described displacement measurement system can be applied to other than the displacement measurement of the inner wall of the tunnel. For example, by installing the target 200 on an excavator,
The amount and direction of movement of the excavator can also be measured. In addition, by setting the target 200 on the excavator or the face 390 and continuously measuring the target 200, the tunnel excavation path can be grasped.

The present invention can be applied not only to the NATM but also to various construction methods such as a mountain tunnel using a support, a shield tunnel and the like.

[0113]

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an example of a relationship between a measurement period from a measurement start date and a displacement amount of an inner wall of a tunnel.

FIG. 2 is an overall view of a displacement measurement system according to an example of the present embodiment.

FIG. 3 is an external view of a measurement unit according to an example of the present embodiment.

FIG. 4 is a functional block diagram of a displacement measurement system according to an example of the present embodiment.

FIG. 5 is an external view of a target according to an example of the present embodiment.

FIG. 6 is an overall view of a displacement measurement system according to another example of the present embodiment.

FIG. 7 is a flowchart illustrating a displacement measurement procedure according to an example of the present embodiment.

[Explanation of symbols]

 Reference Signs List 10 Measurement unit 18, 208 Screw unit 20, 120 Communication unit 42 Operation panel 50 Collimation unit 51 Wide camera 52 CCD camera 60 Imaging unit 70 Light transmission / reception unit 90 Drive unit 110 Remote operation unit 132 Switching control unit 134 Correction control unit 142 Position Measuring unit 144 Displacement measuring unit 200 Target 201 Collimating position 202 Light reflecting unit 204 Reflecting unit receiving unit 8, 206 Supporting unit 210 Reference target 211 Reference position 220 Screw receiving unit 300 Tunnel 310 Lining unit 390 Face 392 Ground mountain

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masao Miyauchi 1-7-1, Kyobashi, Chuo-ku, Tokyo Inside Toda Construction Corporation (72) Inventor Tetsuro Sato 260-63 Yanagimachi, Hase, Atsugi-shi, Kanagawa Pref. Inside the Sokia Atsugi Plant (72) Inventor Tomohiro Kato 260-63 Yanagimachi, Hase, Atsugi City, Kanagawa Prefecture Inside the Sokia Atsugi Plant (72) Inventor Masaki Shimizu 260-63, Yanagimachi, Hase, Atsugi City, Kanagawa Prefecture Inside the Sokia Atsugi Plant

Claims (9)

[Claims] 1. A collimating means for collimating a collimated object installed on an inner wall of a tunnel, a driving means for changing a collimating direction of the collimating means, a control means for controlling the driving means, Based on an output result of the collimating unit, a measuring unit that measures a position and a displacement of the collimated body.The collimating unit includes an imaging unit that captures an image of the collimated body, The control means, based on an imaging result by the imaging unit,
The collimating means performs correction control of the driving means so as to automatically collimate the collimated body, and the measuring means outputs the output by the collimating means in a state where the correction control of the driving means is completed. A displacement measurement system, wherein the measurement is performed based on a result. 2. The collimated object according to claim 1, wherein the collimated object includes a light reflecting portion indicating a collimation position, and the collimating unit sends light toward the collimated object, A displacement measuring system that includes a light transmitting / receiving unit that receives reflected light from the light source, and wherein the measuring unit measures a position and a displacement of the collimated object based on a result of light transmission / reception by the light transmitting / receiving unit. 3. The displacement measuring system according to claim 1, wherein the measuring unit measures a position and a displacement of the collimated object based on a driving result of the driving unit. 4. The apparatus according to claim 1, wherein a plurality of the collimated objects are provided, and wherein the control unit switches the plurality of collimated objects in an arbitrary order by the collimating unit. A displacement measurement system, wherein the drive unit is switched and controlled to collimate, and the measurement unit measures a position and a displacement of the collimated body in the arbitrary order. 5. The measuring means according to claim 1, wherein the collimating means is controlled so as to collimate a reference body indicating a reference position installed at a position where there is no displacement in the tunnel. Measuring the position of the collimating means based on the reference position of the collimated reference body. 6. A displacement measuring system using the displacement measuring system according to claim 1 in a mountain tunnel. 7. The displacement measuring system according to claim 1, which is used for a method of excavating a partial cross section of a face in advance, wherein the cross section other than the partial cross section is covered with the coating. Set a collimator,
A displacement measurement system for calculating a position and a displacement of the collimated object. 8. The collimation unit according to claim 2, further comprising a unit in which at least the collimating unit and the driving unit are integrated, the unit including a first attaching / detaching unit, A body configured to rotatably support the light reflecting portion; a supporting portion rotatably supporting the reflecting portion receiving portion in a direction intersecting a rotation axis of the reflecting portion; A second attaching / detaching portion, wherein the first attaching / detaching portion and the second attaching / detaching portion are detachably formed on a plurality of detachable bodies embedded in the ground. Displacement measurement system. 9. A displacement measuring method for measuring displacements of a plurality of collimated objects provided in a tunnel, wherein a collimating direction of collimating means for each collimated object is automatically determined in a predetermined order. And a second step of measuring the position of each collimated object in the collimating direction. The second step is provided in the collimating means. A step of taking an image of the collimated body using an imaging unit, and controlling the collimation direction so that the collimating means automatically collimates the collimated body; and terminating the compensation control. Measuring the position of the collimated body based on the output result of the collimating means, and performing the first step and the second step repeatedly. A displacement measuring method, wherein the displacement of each of the collimated objects is measured.