JP2012241379A - Arrangement angle management system for drilling rod and arrangement angle management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a versatile system in which an arrangement angle of a drilling rod can be managed easily and highly accurately.SOLUTION: A system 1 manages an arrangement angle of a drilling rod 3 arranged on a ground G prior to drilling the ground G is provided. The system 1 comprises a monolithic ring laser gyro 10 which can be mounted in the drilling rod 3 and is enabled to measure a tilt angle α and a true bearing angle of the drilling rod 3 while being mounted, and arrangement angle display means 20 which displays thereon the measured tilt angle measured by the gyro 10, a scheduled tilt angle schedule beforehand, the measured true bearing angle measured by the gyro 10 and a scheduled true bearing angle scheduled beforehand in a contrastable manner.

Description

  The present invention relates to a system and method for managing an arrangement angle of a drilling rod arranged on a ground prior to drilling the ground.

  In the technical field such as civil engineering, the ground is drilled for various purposes. For example, the ground is drilled when a water collection pipe (drainage pipe) for draining water in the ground, a sewer pipe, a water pipe, a gas pipe, a buried pipe for passing various cables, etc. is built in the ground. In addition, the ground is excavated in various methods such as the chemical solution injection method, the liquefaction countermeasure method, the contaminated ground purification method, and the anchor installation method.

  Although there is a difference in degree depending on the purpose, when drilling the ground, there is a problem of the accuracy of the drilling, that is, how much the actual drilling position is deviated from the planned drilling position. Therefore, the present applicant provides a method for calculating an actual drilling position using an angular velocity detector and an inclination angle detector provided on the drilling rod, and using an azimuth angle change amount and an inclination angle detected by these detectors. (For example, refer to Patent Document 1).

  However, even if the actual drilling hole position is calculated in this way, it is not easy to specifically imagine the actual drilling hole position from the calculation result. In particular, it is difficult to imagine how much the actual drilling position is deviated from the planned drilling position. Therefore, the present applicant has proposed a method that can easily image the actual drilling hole position, and can easily image how much the actual drilling hole position deviates from the planned drilling hole position. (For example, refer to Patent Document 2).

By proposing such a method, it is now possible to perform drilling with extremely high accuracy. However, the following problems still remain.
That is, in the method described above, since the operations such as detection and calculation are performed based on the arrangement angle (attitude) of the drilling rod at the start of drilling, the arrangement angle of the drilling rod at the start of drilling is set. It must be managed accurately. Conventionally, however, this arrangement angle has been managed using a surveying instrument such as a transit (see, for example, “Background Art” in Patent Document 3). For example, as shown in FIG. 4, a drilling rod that is installed by a drilling machine 102 by a surveying instrument 101 such as a transit or a light wave surveying instrument is installed on the normal line of the planned drilling line. 103 streets are matched. Therefore, there are problems that precise work is required and work efficiency is poor, and that errors may occur.

  In this respect, Patent Document 3 is a proposal that these problems are solved, but it is premised on the use of a special detection device (azimuth inclination angle detection device), and a transition is used to calculate the reference azimuth. I need.

JP 2004-183375 A JP 2003-85594 A JP 2006-90025 A

  The main problem to be solved by the present invention is to provide a general-purpose system and method capable of easily and precisely managing the arrangement angle of the drilling rod.

The present invention that has solved this problem is as follows.
[Invention of Claim 1]
A system for managing an arrangement angle of a drilling rod arranged on a ground prior to drilling the ground,
A monolithic ring laser gyro that can be mounted on the drilling rod and that can measure the inclination angle and true azimuth angle of the drilling rod in the mounted state;
Arrangement angle display means for displaying the measured inclination angle and the pre-planned planned inclination angle measured by the gyro, and the measured true azimuth angle and the pre-planned planned azimuth angle measured by the gyro, respectively, so that they can be contrasted. And having
An arrangement angle management system for a drilling rod, characterized by that.

[Invention of Claim 2]
A method for managing an arrangement angle of a drilling rod arranged on the ground prior to drilling the ground,
While mounting a monolithic ring laser gyro capable of measuring the tilt angle and true azimuth angle to the drilling rod,
Arrangement angle display means for displaying the measured inclination angle and the pre-planned planned inclination angle measured by the gyro, and the measured true azimuth angle and the pre-planned planned azimuth angle measured by the gyro, respectively, so that they can be contrasted. Installing,
An arrangement angle management method for a drilling rod, characterized in that

(Main effects)
Since the ring laser gyro has no movable part, it has a characteristic that it is resistant to vibration. In addition, since the monolithic ring laser gyro has a three-axis integrated structure, the characteristic that the vibration pattern generated on each axis approximates when vibration is applied, and the arrangement of the ring laser on each axis is targeted with respect to the center of gravity. Therefore, it has characteristics when the system error is small. That is, the monolithic ring laser gyro has characteristics that it is extremely resistant to vibration and has high accuracy. Therefore, even when vibration occurs in the monolithic ring laser gyro mounted on the drill rod when adjusting the arrangement angle of the drill rod, the tilt angle and true azimuth angle of the drill rod can be measured with high accuracy. As a result, the arrangement angle of the drilling rod can be displayed on the arrangement angle display means in real time (monitoring), and management such as confirmation and adjustment of the arrangement angle can be performed while viewing the display means. Moreover, this management can be performed by one operator (operator).
In addition, the system and method for mounting the monolithic ring laser gyro to the drilling rod is extremely versatile, and there are buildings on the normal line of the planned drilling line, the sea, rivers, etc. Even if the vessel cannot be installed, it can be applied.
A detector such as an inclinometer cannot measure a moving object with high accuracy. Therefore, it is impossible to adjust the arrangement angle of the drilling rod while monitoring the arrangement angle of the drilling rod using a detector such as an inclinometer.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes a general purpose system and method which can manage the arrangement | positioning angle of a drilling rod easily and with high precision.

It is a conceptual side view of an arrangement angle management system. It is a conceptual top view of an arrangement angle management system. However, the arrangement angle display means is not shown. It is a display example by arrangement angle display means. It is a conceptual diagram of the arrangement angle management system of a drilling rod using the conventional surveying instrument.

Next, an embodiment of the present invention will be described.
1 and 2 show an arrangement angle management system 1 for a drilling rod 3 for drilling the ground G. The drilling rod 3 is formed of a drilling tube or the like having a drilling bid (not shown) at the tip, and is held by the drilling machine 2.

  Specifically, first, the drilling machine 2 has a main body 2A that can move on the ground G, and an arm 2B extends from the main body 2A. The arm portion 2B holds a rod-shaped guide cell 2C, and a slide means 2D that is movable in the extending (longitudinal) direction of the guide cell 2C is provided on the guide cell 2C. Rotating / striking means 2E is provided on the sliding means 2D, and the rear end of the drilling rod 3 is held at the tip of the rotating / striking means 2E. When the slide means 2D moves in the extending direction on the guide cell 2C, the drilling rod 3 moves in the extending direction of the guide cell 2C along with this movement. Further, the drilling rod 3 is rotated around the axis by the rotation / striking means 2E during drilling, and an impact in the axial direction (drilling direction) is given. It should be noted that the tip end side of the drilling rod 3 can be rotated around the axial center by the chuck portion 2F provided on the tip end portion of the guide cell 2C, and can be moved in the axial direction. Is held in.

  In adjusting the arrangement position and the arrangement angle of the drilling rod 3 using the drilling machine 2 thus configured, the main body 2A is moved to the vicinity of the drilling start position, and the operator (operator) moves the drilling machine. The arm portion 2B is operated by appropriately operating the arrangement angle adjusting lever group and the like provided on the side surfaces of the second.

  A monolithic ring laser gyro (MRLG) 10 capable of measuring an inclination angle and a true azimuth angle is attached to the drilling rod 3 held as described above. As described above, the monolithic ring laser gyro 10 has a characteristic that it is extremely resistant to vibration and has high accuracy. Therefore, the arrangement angle of the drilling rod 3 can be displayed in real time on the personal computer 20 described later (monitoring), and the arrangement angle can be checked and adjusted while being visually observed. Further, as apparent from FIGS. 1 and 2, in this arrangement angle management system 1, there is no need to install any equipment in front of the drilling machine 2, so there is a building on the normal line of the planned drilling line. Even if there are seas, rivers, etc., the arrangement angle can be managed.

  As the monolithic ring laser gyro 10, for example, T-16E, T-16B, T-24, etc. manufactured by KEARFOTT can be used. These gyros detect the horizontal component of the earth's rotation and calculate the true azimuth from the detected value, and have extremely high detection accuracy.

  The monolithic ring laser gyro 10 is housed in a metal case or the like and attached to the drilling rod 3 directly or indirectly through another member. In the illustrated example, a monolithic ring laser gyro 10 is provided on the drill rod 3 and is fixed to the drill rod 3 using an appropriate member.

  The arrangement angle management system 1 according to this embodiment includes a personal computer 20 as an example of arrangement angle display means. Various information such as an inclination angle and a true azimuth angle is displayed on the monitor (display unit) 20M of the personal computer 20. Specifically, the measured tilt angle measured by the monolithic ring laser gyro 10 and the pre-planned planned tilt angle, and the measured true azimuth angle measured by the gyro 10 and the pre-planned planned true azimuth angle are respectively compared. Displayed as possible.

  As the display method, various forms are conceivable. For example, as shown in FIG. 3, the measurement display unit 23 displays the measurement tilt angle and the measurement true azimuth side by side, and the plan display unit 24 displays the plan tilt angle. In addition, the planned true azimuth angle can be displayed side by side. Also by this display method, the operator can compare the measured inclination angle and the planned inclination angle, the measured true azimuth angle and the planned true azimuth angle, respectively, and adjust the arrangement angle of the drilling rod 3 based on the comparison result. it can.

  However, according to this method, it is not easy to specifically imagine how much the measured tilt angle and the measured true azimuth angle are deviated from the planned tilt angle and the planned true azimuth angle, respectively. Therefore, in this embodiment, an inclination state diagram (part) 21 and an orientation state diagram (part) 22 for displaying the inclination angle and the true azimuth angle as a two-dimensional linear figure are provided on the display unit 20M. The inclination situation diagram 21 is a two-dimensional drawing in which the measurement inclination line 21B showing the measurement inclination angle with a straight arrow and the planned inclination line 21A showing the plan inclination angle with a straight line are displayed in an overlapping manner. It is a two-dimensional drawing in which a measured true azimuth line 22B whose angle is indicated by a straight arrow and a planned true azimuth line 22A whose straight line indicates a planned true azimuth angle are displayed. With this display method, it is possible to visually confirm how much the measured tilt angle and the measured true azimuth angle are deviated from the planned tilt angle and the planned true azimuth angle, respectively, and a specific image can be obtained. . In particular, in this embodiment, an operation instruction arrow 21C indicating the correction direction of the inclination angle is displayed in the inclination state diagram 21, and an operation instruction arrow 22C indicating the correction direction of the true azimuth angle is displayed in the azimuth state diagram 22. Therefore, it is sufficient for the operator P to operate the arrangement angle adjusting lever group in the direction indicated by the arrows 21C and 22C according to the arrows 21C and 22C.

Next, a method for managing the arrangement angle of the drilling rod 3 using the arrangement angle management system 1 of this embodiment will be described.
As shown in FIGS. 1 and 2, first, the drilling rod 3 is held by the drilling machine 2 along the drilling direction when the drilling is disclosed. The arrangement angle (inclination angle α and true azimuth angle β) of the drilling rod 3 at this time is sufficient, and it may be simply held in the horizontal direction.

  Next, the monolithic ring laser gyro 10 is attached to the drilling rod 3 arranged in this way. This mounting can also be performed prior to holding the drilling rod 3 by the drilling machine 2.

  On the other hand, the personal computer 20 is installed simultaneously with or after these operations. This installation is preferably performed, for example, according to a mode in which an installation base is installed near an arrangement angle adjusting lever group (not shown) provided on the side of the drilling machine 2 and the personal computer 20 is installed on the installation base.

  When the installation of the monolithic ring laser gyro 10 and the installation of the personal computer 20 are completed as described above, the power supply and the like are turned on to start both devices 10 and 20, and the tilt angle measured by the monolithic ring laser gyro 10 and The true azimuth angle is displayed on the display unit 20M of the personal computer 20. Transmission of measurement information (output information) from the monolithic ring laser gyro 10 to the personal computer 20 can be performed by wire or wirelessly.

  The measurement information received by the personal computer 20 is converted into graphic display information by a calculation unit (not shown) of the personal computer 20. In this conversion, the display information can be corrected using the principle of the Kalman filter or the like. Various information is displayed in the inclination state diagram 21 and the azimuth state diagram 22 of the display unit 20M based on the graphic display information appropriately corrected. In the present embodiment, as described above, the operation instruction arrows 21C and 22C are displayed as one of various kinds of information, so that the operator P operates the arrangement angle adjusting lever group according to the arrows 21C and 22C to drill the hole. The arrangement angle of the rod 3 is adjusted.

  When the adjustment of the arrangement angle is finished, drilling with the drill rod 3 is started. The monolithic ring laser gyro 10 can also be removed prior to the start of the drilling.

  The present invention can be applied as a system and method for managing the arrangement angle of a drilling rod arranged on the ground prior to drilling the ground.

  DESCRIPTION OF SYMBOLS 1 ... Arrangement angle management system, 2 ... Drilling machine, 2A ... Main body part, 2B ... Arm part, 2C ... Guide cell, 2D ... Slide means, 2E ... Rotation / striking means, 2F ... Chuck part, 10 ... Monolithic ring laser Gyro, 20 ... Personal computer, 20M ... Monitor, 21 ... Inclination situation diagram, 22 ... Orientation situation diagram, 23 ... Measurement display section, 24 ... Plan display section, 101 ... Surveying instrument, 102 ... Drilling machine, 103 ... Drilling hole Rod, G ... ground.

Claims (2)

A system for managing an arrangement angle of a drilling rod arranged on a ground prior to drilling the ground,
A monolithic ring laser gyro that can be mounted on the drilling rod and that can measure the inclination angle and true azimuth angle of the drilling rod in the mounted state;
Arrangement angle display means for displaying the measured inclination angle and the pre-planned planned inclination angle measured by the gyro, and the measured true azimuth angle and the pre-planned planned azimuth angle measured by the gyro, respectively, so that they can be contrasted. And having
An arrangement angle management system for a drilling rod, characterized by that. A method for managing an arrangement angle of a drilling rod arranged on the ground prior to drilling the ground,
While mounting a monolithic ring laser gyro capable of measuring the tilt angle and true azimuth angle to the drilling rod,
Arrangement angle display means for displaying the measured inclination angle and the pre-planned planned inclination angle measured by the gyro, and the measured true azimuth angle and the pre-planned planned azimuth angle measured by the gyro, respectively, so that they can be contrasted. Installing,
An arrangement angle management method for a drilling rod, characterized in that