JP5256405B2 - Vertical hole pipe position measurement method - Google Patents

Description

  The present invention relates to a method for measuring the position of a vertical hole pipe, and in particular, in the position measurement of a vertical hole pipe, by configuring so that the orientation reference of the sensor probe for each position measurement is matched, a plurality of positions in the vertical hole pipe are also measured. The present invention relates to a new improvement for comparing the measurement results of times and improving the reliability of measurement data.

  As this kind of pipe position measuring method used conventionally, for example, the method disclosed in Patent Document 1 is used, and is configured as shown in FIGS. FIG. 4 is a block diagram showing a conventional pipe position measuring method, and FIG. 5 is an explanatory view showing the position of the side hole pipe 200 obtained by the calculation means 7 of FIG. In FIG. 4, what is indicated by reference numeral 1 is a sensor probe that is movably provided in the side hole pipe line 200. The cable 3 connected to the sensor probe 1 includes a cable repeater 4 and a cable length measuring instrument 5. Is wound by the cable winder 6.

  The cable length measuring device 5 outputs a cable speed 5 a corresponding to the moving speed of the sensor probe 1. Although not shown, the sensor probe 1 is provided with a sensor unit including an angular velocity meter and an accelerometer, and probe data 6a including angular velocity data and acceleration data is output from the sensor unit. The cable length measuring device 5 and the cable winder 6 are connected to a calculation means 7 composed of, for example, a CPU, a RAM, and a ROM. The calculation means 7 calculates the cable speed 5a and the probe data 6a. By performing the processing, the position of the horizontal hole pipe line 200 is measured as shown in FIG. Specifically, the calculation means 7 obtains the moving direction of the sensor probe 1 by obtaining the pitch angle θ and the azimuth angle ψ of the sensor probe 1 based on the probe data 6a. Further, the calculation means 7 obtains the movement path of the sensor probe 1, that is, the position of the side hole pipe line 200, based on the obtained movement direction and the cable speed 5a.

JP 2007-155583 A

  Here, the azimuth angle ψ obtained from the probe data 6a indicates a deviation of the azimuth from the azimuth reference determined at a predetermined timing, for example, when the power is turned on, that is, a relative angle from the azimuth reference. In the conventional pipe position measurement method as described above, the measurement target is the horizontal hole pipe line 200. Therefore, by inserting the sensor probe 1 into the horizontal hole pipe line 200, the orientation reference of the sensor probe 1 for each position measurement can be obtained. Can match. However, when the measurement target is a vertical hole pipe, the orientation reference of the sensor probe 1 may face a different orientation every time position measurement is performed, and there is a problem that the measurement results of a plurality of times cannot be compared.

  The present invention has been made in order to solve the above-described problems. The purpose of the present invention is to make it possible to compare measurement results of a plurality of times even in the position measurement of a vertical hole pipe, and to improve the reliability of measurement data. It is to provide a pipe position measurement method.

In the vertical hole pipeline position measuring method according to the present invention, the position of the vertical hole pipeline is measured based on the pitch angle, azimuth angle, and speed of the sensor probe when the sensor probe is advanced along the vertical hole pipeline. A vertical hole pipe position measuring method, wherein a reference position indicating part is provided on a part of the outer periphery of the sensor probe, and a reference direction indicating part is provided on a part of the outer periphery of the entrance / exit of the vertical hole pipe line. For each position measurement of the vertical hole conduit, the reference position indicating unit and the reference direction indicating unit are aligned along the circumferential direction of the sensor probe at the entrance and exit, and the direction of the sensor probe for each position measurement The criteria are matched.
In addition, for each position measurement of the vertical hole pipeline, the azimuth reference of the sensor probe is corrected based on the difference angle between the reference position indicating unit and the reference azimuth indicating unit at the entrance and exit, The orientation reference of the sensor probe is matched.

According to the vertical hole duct position measuring method of the present invention, the reference position indicating unit and the reference azimuth indicating unit coincide with each other along the circumferential direction of the sensor probe at the entrance and exit, and the sensor probe for each position measurement. Since the azimuth | direction reference | standard of this is matched, the measurement result of multiple times can be compared also in the position measurement of a vertical hole pipe line, and the reliability of measurement data can be improved.
Further, the azimuth reference of the sensor probe is corrected for each position measurement of the vertical hole pipeline based on the difference angle between the reference position instruction unit and the reference azimuth instruction unit at the entrance and exit, Since the azimuth reference of the sensor probe is matched, the measurement results of a plurality of times can be compared also in the measurement of the position of the vertical hole pipe, and the reliability of the measurement data can be improved, as in the case of matching each indication unit.

The best mode for carrying out the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a configuration diagram illustrating a vertical hole pipe position measuring method according to Embodiment 1 of the present invention. In addition, the same code | symbol is demonstrated about the part which is the same as that of the conventional vertical hole pipe line position measuring method, or an equivalent part. In the figure, the overall configuration of the vertical hole pipeline position measuring method according to this embodiment is the same as that of the conventional pipeline position measuring method except that the measurement target is changed from the horizontal hole pipeline 200 to the vertical hole pipeline 2 ( This is the same as in FIG. That is, the sensor probe 1 is movably provided in the vertical hole pipe 2, and the calculation means 7 calculates the pitch angle θ and azimuth angle ψ of the sensor probe 1 obtained from the probe data 6 a, and the sensor probe 1. Based on the cable speed 5a movement speed corresponding to the movement speed, the position of the vertical hole pipe 2 is obtained.

  Next, FIG. 2 is a plan view showing the sensor probe 1 and the vertical hole pipe 2 of FIG. In the figure, a reference position indicating portion 10 made of an arrow is provided on a part of the outer periphery of the sensor probe 1, and a reference from the arrow seal is provided on a part of the outer periphery of the entrance / exit 20 of the vertical hole duct 2. An azimuth indicating unit 21 is provided. The reference position instruction unit 10 and the reference direction instruction unit 21 may be fixed marks, for example, handwritten lines or scratches.

  The reference position indicating unit 10 and the reference azimuth indicating unit 21 coincide with each other along the circumferential direction 1a of the sensor probe 1 at the doorway 20 when the sensor probe 1 is manually rotated. The timing at which the indicating sections 10 and 21 are made coincident with each other at the entrance / exit 20 is that the sensor probe 1 is inserted into the entrance / exit 20 and is advanced from the entrance / exit 20 toward the end of the vertical hole pipe 2 and the sensor. It is at least one before the sensor probe 1 is taken out from the entrance / exit 20 after the probe 1 is advanced from the end of the vertical hole pipe 2 toward the entrance / exit 20.

  The coincidence of the instruction units 10 and 21 is performed every time the position of the vertical hole pipe 2 is measured, so that the reference of the azimuth angle ψ for each position measurement, that is, the azimuth reference of the sensor probe 1 for each position measurement is matched. . In other words, the orientation reference of the sensor probe 1 for each position measurement is matched with the fixed reference orientation indicated by the reference orientation instruction unit 21 for each position measurement. Thereby, the measurement results of a plurality of times can be compared also in the position measurement of the vertical hole pipeline 2, and the reliability of the measurement data can be improved.

  In the first embodiment, each of the instruction units 10 and 21 has been described as a fixed mark, but may be first and second opposing sensors such as a light emitting unit and a light receiving unit. That is, for example, a rotational driving means such as a motor is connected to the sensor probe, and the sensor probe is rotationally driven to the rotational position where the first and second opposing sensors face each other for each position measurement, thereby along the circumferential direction of the sensor probe. The instruction units may be matched.

Embodiment 2. FIG.
Next, FIG. 3 is explanatory drawing which shows the vertical hole pipe line position measuring method by Embodiment 2 of this invention. In the first embodiment, it has been described that the reference position indicating unit 10 coincides with the reference direction indicating unit 21 along the circumferential direction 1a of the sensor probe 1. However, depending on the measurement site, the sensor probe 1 is rotated for each position measurement. It may be difficult to do so. Therefore, in the second embodiment, every time the position of the vertical hole pipe 2 is measured, the difference angle 30 between the reference position indicating unit 10 and the reference direction indicating unit 21 at the entrance 20 is manually measured. The difference angle 30 is input to the calculation means 7 (see FIG. 1). The calculating means 7 corrects the azimuth reference of the sensor probe 1 based on the inputted difference angle 30. That is, for each position measurement, the difference angle 30 is subtracted from the azimuth angle ψ obtained from the probe data 6a (see FIG. 1), thereby adjusting the azimuth angle ψ to zero. Other configurations are the same as those of the first embodiment.

  Even if the orientation reference of the sensor probe 1 is corrected based on the difference angle 30 as described above, the measurement results of a plurality of times can be compared even in the position measurement of the vertical hole conduit 2, and the reliability of the measurement data can be compared. Can be improved.

It is a block diagram which shows the vertical hole pipe line position measuring method by Embodiment 1 of this invention. It is a top view which shows the sensor probe and vertical hole pipe line of FIG. It is explanatory drawing which shows the vertical hole pipeline position measuring method by Embodiment 2 of this invention. It is a block diagram which shows the conventional pipeline position measuring method. It is explanatory drawing which shows the position of the horizontal hole pipe calculated | required by the calculating means of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sensor probe 1a Circumferential direction 2 Vertical hole pipe line 10 Reference | standard position instruction | indication part 20 Entrance / exit 21 Reference | standard azimuth | direction direction instruction part 30

Claims (2)

The position of the vertical hole pipe (2) is measured based on the pitch angle, azimuth angle, and speed of the sensor probe (1) when the sensor probe (1) travels along the vertical hole pipe (2). A vertical hole pipe position measuring method,
A reference position indicating part (10) is provided on a part of the outer periphery of the sensor probe (1), and a reference direction indicating part (21) is provided on a part of the outer periphery of the entrance (20) of the vertical hole pipe (2). Provided,
Each time the position of the vertical hole pipe (2) is measured, the reference position indicating section (10) and the reference azimuth indicating section (21) at the entrance (20) are in the circumferential direction (1a) of the sensor probe (1). The vertical hole pipe position measuring method is characterized in that the azimuth reference of the sensor probe (1) for each position measurement is matched. The position of the vertical hole pipe (2) is measured based on the pitch angle, azimuth angle, and speed of the sensor probe (1) when the sensor probe (1) travels along the vertical hole pipe (2). A vertical hole pipe position measuring method,
A reference position indicating part (10) is provided on a part of the outer periphery of the sensor probe (1), and a reference direction indicating part (21) is provided on a part of the outer periphery of the entrance (20) of the vertical hole pipe (2). Provided,
For each position measurement of the vertical hole pipe (2), the sensor probe (1) is based on a difference angle (30) between the reference position indicating unit (10) and the reference direction indicating unit (21) at the entrance / exit. The azimuth | direction reference | standard of this is correct | amended, and the azimuth | direction reference | standard of the said sensor probe (1) for every said position measurement is corresponded, The vertical hole pipe line position measuring method characterized by the above-mentioned.

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