JPH05288548A - Shield surveying method - Google Patents

Abstract

PURPOSE:To make an efficient, high-precision survey for constructing a shield tunnel along a planned line by tracking a target fitted to a shield excavator, detecting the position of the excavator, and following the excavator independently from the advance and stop of a rear bogie. CONSTITUTION:Reflecting prisms located at two reference points (b), (c) on the pit mouth side from an automatic tracking range finder/goniometer 2 mounted on a range finder/goniometer mounting bogies 1 located at a position (a) are motor-driven horizontally and vertically, two points (b), (c) are collimated in sequence, then the three-dimensional coordinate position of the automatic tracking range finder/goniometer 2 is determined in the procedures of a trigonometrical survey. The automatic tracking range finder/goniometer 2 determined with the three-dimensional coordinate position is rotated horizontally and vertically while a shield excavator 3 is performing an excavation, a reflecting prism 4 installed on the shield excavator 3 is automatically tracked, the three- dimensional position of the reflecting prism 4 is continuously determined, and the position of the shield excavator 3 is automatically surveyed on a real-time basis.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surveying method in a shield shaft. For more details,
The present invention relates to a new surveying method for enabling a tunnel to be constructed along a planned line in a shield construction method.

[0002]

2. Description of the Related Art In recent years, the demand for advanced utilization of underground space has increased, and expectations for tunnel construction using the shield excavation method have become great. There is a strong demand for realization.
As is well known, in tunnel construction, including the shield construction method, it is technically indispensable to lay the tunnel along the alignment as planned, and in particular, mechanically excavate. In the shield construction method, therefore, accurate measurement of the position of the shield machine is an extremely important requirement.

In measuring the position of a shield machine and constructing a tunnel along a planned line in such a shield construction method, a manual survey method and an automatic survey method have been conventionally known. ing. Of these, center surveying (traverse surveying) and offset surveying are the main methods of human-powered surveying, and as an automatic surveying method that replaces human power, a method using a laser rangefinder and gyro compass is available. is there.

This latter automatic surveying method is much more rational than surveying by human power, and rather than performing surveying by manpower between shield excavations, it is possible to perform surveying at all times during excavation, and to improve the accuracy of surveying. Since the variation is small, it is gradually spreading. However, although it is an automatic surveying method having such an excellent advantage, in the case of a method using a laser rangefinder, when the tunnel alignment is a curve,
There is a drawback that the number of times the laser rangefinder is changed. Also, in the case of using the gyro compass, when the shield machine laterally moves at the same angle in the horizontal direction, the gyro compass is pointing in the same direction before and after moving, so it is as if the same direction. There is a drawback that it is measured as if it is proceeding to, and it appears as an error.

The present invention has been made in view of the above circumstances, and while taking advantage of the features of the automatic surveying method of the shield construction method, which is gradually becoming widespread, eliminates the drawbacks of the conventional automatic surveying methods. The purpose of the present invention is to provide a highly efficient and accurate tunnel surveying method capable of constructing a shield tunnel along a planned line.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a traveling bogie equipped with an automatic tracking type range finder to the rear of a bogie behind a shield machine.
You can connect it freely or make this traveling carriage self-propelled, and when the shield machine excavates, stop the traveling carriage and set the position of this automatic tracking type rangefinder based on the reference point on the standing side. Automatically detect, then continuously detect the position of the shield machine by tracking the target attached to the shield machine, and travel to the rear bogie side at any time regardless of whether the shield machine is advancing or stopping, Provide a shield surveying method characterized by following a dolly.

More specifically, according to the present invention, in the shield construction in which the segments are assembled at the rear of the shield machine to construct a tunnel, the horizontal and vertical directions are provided behind the rear carriage pulled by the shield machine. A vehicle equipped with an automatic tracking type rangefinder with a drive mechanism and an inclinometer is connected by a wire etc. so that it can be run / stopped freely, or a self-propelled type that runs / stops by an external signal Place the carriage. The traveling carriage equipped with this automatic tracking type rangefinder is irradiating a target such as a reflection prism installed at the reference point on the vertical side while stopping even when the shield machine is excavating, and triangulation is performed. With this capacity, the position of this automatic tracking type rangefinder is automatically detected. Then, the automatic tracking type rangefinder, whose three-dimensional coordinate position is required during the shield excavation, is automatically tracked by a target such as a reflecting prism attached to the shield excavator to perform the rangefinder. Continuously detect the position of the machine. Further, this truck is adapted to automatically travel along with the rear truck or to automatically follow the rear truck by locking and releasing the connecting means such as a wire on the rear truck side by the control signal. Also, the distance between the rear carriage and the carriage equipped with the automatic tracking type rangefinder is measured by the rangefinder installed in the carriage equipped with the automatic tracking rangefinder.

When the automatic tracking type rangefinder is automatically tracking a target such as a reflection prism of a shield machine,
When there is an obstacle and the sight cannot be seen, the automatic tracking type rangefinder can be moved horizontally or vertically so that the reflection prism can be seen. Through the series of processes described above, it is possible to automatically measure the position of the shield machine from the reference point located behind the rear bogie. With this surveying method, the line-of-sight distance becomes longer, and it is not necessary to change the position of the automatic tracking type rangefinder when performing surveying in real time. It is also possible to measure a new reference point position from the most appropriate point and install it at that position.

Here, the reference point and the target means to be the shield machine may be not only a reflecting prism but also any other device such as a light receiver, and for measuring the inclination of the automatic tracking type rangefinder. Instead of the inclinometer, the automatic tracking type rangefinder may be mounted on the horizontal table so that the automatic tracking rangefinder is always kept at the level.

Next, the shield surveying method of the present invention will be described in detail with reference to the drawings. Of course, this method is not limited to the following example.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an example for explaining a series of procedures in an embodiment of the present invention using an automatic surveying vehicle. Figure 2
4 to 4 are plan views of the method of the present invention according to the procedure. That is, first, in the state shown in FIG. 2, the carriage (1) equipped with the rangefinder and gantry located at the position (a).
From the automatic tracking type rangefinder (2) mounted on the vehicle, the reflecting prisms located at the two reference points (b) and (c) on the side of the mouth are horizontally and vertically driven by a motor, and the two points are sequentially driven. When you are in a line of sight, you can use the triangulation method to automatically measure the distance and angle (2)
Find the three-dimensional coordinate position of. Next, shield machine (3)
As shown in FIG. 3, the three-dimensional coordinate position is required when the digging is performed by the automatic tracking type rangefinder (2).
Is rotated horizontally and vertically, the reflection prism (4) installed in the shield machine (3) is automatically tracked, and the three-dimensional position of the reflection prism (4) is continuously obtained. 3) Position is automatically measured in real time. After the excavation is completed, as shown in FIG. 4, a carriage equipped with a range finder (1).
Self-propels to the rear bogie (5) side and stops at a predetermined distance from the rear bogie (5).

FIG. 5 is a side view of a carriage (1) equipped with a distance measuring and angle measuring device according to the present invention and its front and rear sides. The traveling motor (6) is operated by a control signal to the communication device (7) of the carriage (1), and traveling can be stopped at any time. The distance between the bogie (1) equipped with the range finder and the rear bogie (5) is measured by using a distance meter (8) or the like, and the automatic traveling can be stopped at a set position as appropriate. The command to stop traveling is given by a control signal from the outside.

Further, in the case where the bogie (1) equipped with the range finder is constituted by a traveling carriage connected to the rear carriage (5) instead of the automatic traveling carriage, this traveling carriage is set as the rear carriage (5). By connecting with a wire or the like, the connecting means of the wire or the like can be freely extended or shortened by a take-up means or the like, and accordingly, traveling or stopping of the traveling carriage is turned ON / OFF.
You can also do it.

[0014]

As described in detail above, the present invention realizes an efficient and accurate surveying method for constructing a shield tunnel along a planned line in the shield excavation method.

[Brief description of drawings]

FIG. 1 is a block diagram showing a procedure as an embodiment of the present invention.

FIG. 2 is a plan view showing position detection of an automatic tracking type rangefinder using a reference point as an example.

FIG. 3 is a plan view showing position detection of a shield machine as an example.

FIG. 4 is a plan view showing tracking of an automatic traveling vehicle in a rear vehicle direction.

FIG. 5 is a side view showing an example of a carriage equipped with a distance measuring and angle measuring device.

[Explanation of symbols]

 1 Bogie equipped with a range finder 2 Automatic tracking type range finder 3 Shield excavator 4 Reflective prism 5 Rear dolly 6 Running motor 7 Communication device 8 Distance meter

Claims (1)

[Claims] 1. A traveling carriage equipped with an automatic tracking type rangefinder, connected to the rear of a rear carriage of a shield machine, or made to be a self-propelled carriage when the shield machine excavates. The position of this automatic tracking type rangefinder is automatically detected on the basis of the reference point on the vertical shaft side with the stationary, and then the position of the shield machine is detected by tracking the target attached to the shield machine. An automatic surveying method characterized by following the movement and stopping of a rear bogie independently of it.