JPH0868620A - Measuring apparatus of wall shape of excavation hole - Google Patents

Abstract

PURPOSE: To obtain a measuring apparatus by which a wall shape can be recognized as a two-dimensional figure and a three-dimensional figure which can be grasped easily by anybody. CONSTITUTION: An ultrasonic distance detector 7 which is suspended into an excavation hole 2 by a winch 3 so as to be freely raised and lowered, an angle- of-rotation detector 8 which detects the angle of rotation of the ultrasonic distance detector 7 and a raising and lowering amount detector 9 which detects the raising and lowering amount by the winch 3 of the ultrasonic distance detector 7 are installed. A computer 12 operates the shape on the whole circumference of the wall of the excavation hole 2 on the basis of outputs of the respective detectors, and it displays and prints the shape of the wall on a display 13 and a printer 14 according to an operated result.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hole wall shape measuring device for measuring the hole wall shape of an excavated hole excavated by an excavator or the like over the entire circumferential surface.

[0002]

2. Description of the Related Art Foundation construction such as pile construction and underground wall is indispensable for construction of high-rise buildings, and the quality of this foundation construction affects the durability and seismic strength of the construction.

For this reason, it is necessary to carry out excavation for the above-mentioned piles with high accuracy and efficiency, and in order to perform the excavation management efficiently, the excavator has conventionally been provided with an inclinometer, and While monitoring the attitude of the excavator, excavation is carried out with the intuition and experience of the operator.

On the other hand, in order to improve the unevenness and poorness of the excavation accuracy due to the operator's intuition and experience, the ultrasonic sensor is temporarily removed after the excavator is pulled up to the ground every 20 to 30 meters. There is also provided a method in which the state of the wall of the excavation hole is roughly grasped from two directions or four directions while being suspended in the excavation hole and transmitting and receiving ultrasonic waves.

[0005]

However, in the method of grasping the hole wall by distance measurement by transmitting and receiving the ultrasonic waves, the shape of the hole wall of the excavation hole can be grasped only from two directions or four directions. The shape over the entire circumferential surface of No.1 must be estimated from the grasping results from these two directions or four directions, and as a result, the whole shape of the hole wall cannot be grasped accurately. there were.

The present invention has been made by paying attention to the above-mentioned conventional problems, and continuously and accurately measures and calculates the hole wall shape of an excavation hole over the entire circumference and the entire length. According to the result, it is an object to obtain a hole wall shape measuring device for an excavation hole that allows the hole wall shape to be recognized as a two-dimensional and three-dimensional figure that can be easily grasped by any person. Another object of the present invention is to obtain a hole wall shape measuring device for an excavation hole that enables efficient measurement of the hole wall shape by scanning the hole wall continuously in a spiral shape.

[0007]

A hole wall shape measuring device for an excavation hole according to the present invention includes an ultrasonic distance detector which is suspended by a winch so as to be lifted and lowered in the excavation hole, and a motor for the ultrasonic distance detector. A rotation angle detector for detecting a rotation angle by means of an ultrasonic wave, and a lift amount detector for detecting a lift amount by the winch of the ultrasonic distance detector are provided, and the computer is provided with the above-mentioned excavation based on the output of each detector. The shape of the hole around the entire circumference of the hole wall is calculated, the hole wall shape is displayed on the display according to the calculation result, and the printer prints.

Further, the hole wall shape measuring device for an excavation hole according to the present invention is provided with an ultrasonic distance detector suspended by a winch so as to be vertically movable in the excavation hole, and a rotation angle of the ultrasonic distance detector by a motor. Rotation angle detector to detect,
Provided with a lift amount detector for detecting the lift amount of the ultrasonic distance detector by the winch, the computer, based on the output of each of the detector, by the descent and rotation of the ultrasonic distance detector, the excavation The hole wall shape at the position where the hole wall of the hole is scanned in a spiral shape is calculated, the hole wall shape is displayed on the display according to the calculation result, and the printer is made to print.

[0009]

The ultrasonic distance detector according to the present invention is urged to rotate about the vertical axis in the borehole by the motor, emits ultrasonic waves to the borehole wall of the borehole, and reflects the reflected wave from the borehole wall. The time from the reception to the reception is converted into the distance so that the flat cross-sectional shape of the drill hole can be obtained.

At this time, the rotation angle detector detects the rotation angle of the ultrasonic distance detector. Therefore, from this and the distance data, the distance to each position of the hole wall, that is, the entire circumference of the hole wall. It is possible to grasp the irregularities of the.

Further, the ascending / descending amount detector detects the ascending / descending position in the excavation hole of the ultrasonic distance detector, and the longitudinal sectional shape of the excavation hole can be obtained from the ascending / descending position and the above distance. The three-dimensional wire frame diagram and the three-dimensional contour diagram of the hole wall shape can be obtained from the elevation position, distance and rotation angle.

Further, the ultrasonic distance detector according to the present invention is rotated by a motor while being lowered by a winch, so that the ultrasonic distance detector continuously scans the hole wall of the excavation hole in a spiral shape. As a result, the data measurement efficiency of the hole wall shape is significantly improved, and the hole wall measurement with a long hole length can be performed advantageously in time and economically.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the entire hole wall shape measuring device. First, in the figure, an excavator forms an excavation hole 2 having a predetermined diameter and a predetermined length on the ground 1, and on the ground 1 above the excavation hole 2 via a support base (not shown) or the like. Winch 3 is installed.

A storage case 5 is suspended from the winch 3 through a suspending wire 4, and the suspension wire 4 is wound and unwound by the operation of the winch 3 to store the storage case. The case 5 can be moved up and down in the excavation hole 2. The storage case 5 is made of a watertight container made of, for example, a synthetic resin, and the storage case 5 includes an ultrasonic distance detector 7 horizontally rotated (one rotation) about a vertical axis by a motor 6, and an ultrasonic distance detector 7. A rotation angle detector 8 that detects the rotation angle of the ultrasonic distance detector 7 or the motor 6 that drives the ultrasonic distance detector 7 is attached. In addition,
Reference numerals 7a and 8a denote an ultrasonic distance detector 7 and a rotation angle detector 8.
Is a sensor cable for supplying the output of (1) to the controller described later via the winch 3.

On the other hand, the winch 3 is provided with a lift amount detector 9 for detecting the lift amount of the storage case 5 suspended by the suspending wire 4, that is, the lift amount of the ultrasonic distance detector 7. In addition, in order to prevent the collapse of the hole wall, a stabilizing solution 10 such as muddy water is contained in the excavation hole 2.

The winch 3 has an amplifier and an A / D
A controller 11 including a signal processing circuit such as a converter, a winch, a circuit for controlling a motor, and the like is connected to the controller 11. Based on each data of the above-mentioned elevation amount, rotation angle, and distance, the coordinates of each part of the hole wall are calculated. A computer 12 for calculation, a display 13 for graphically displaying the hole wall shape as a result of this calculation, and a printer 14 for printing the hole wall shape are connected.

FIG. 2 shows an embodiment of the rotation angle detector 8, which is a conductive disk 15 which rotates together with the motor 6 and the ultrasonic distance detector 7, and a plurality of conductive disks 15 having the same radius on the upper surface thereof. Insulators arranged at equal intervals, that is, non-conductive portions 16 are provided.

The conductive portion of the conductive disk 15 has a first
17 is always in contact, and the second contact 18 is always in contact with the conductive disk 15 having the radius having the non-conductive portion 16.

A DC power supply 19 and an ammeter 20 for detecting a rotation angle are connected in series between the first contact 17 and the second contact 18.

Next, the operation will be described. First, after excavating the ground 1 by the excavator, the excavation hole 2 formed
Inside, the storage case 5 at the end of the suspending wire suspended from the winch 3 installed above it is gently suspended.

The hoisting height, that is, the amount of elevation of the ultrasonic distance detector 7 in the storage case 5 is automatically set by the winch control of the controller 11 according to an instruction from the computer 12, and, for example, at the beginning, a drill hole. Two
It is positioned in the upper part of the inside and then lowered at a predetermined speed.

The actual ascending / descending position in the excavation hole 2 is detected by the ascending / descending amount detector 9 on the winch 3 side, and the ultrasonic distance detector 7 is operated by the motor 6
Is urged to rotate slowly.

The ultrasonic distance detector 7 emits ultrasonic waves toward the hole wall of the excavation hole 2 during this rotation, and the ultrasonic wave is transmitted to the stabilizing liquid 1
By reflecting on the hole wall via 0, the time from the emission of the ultrasonic wave to the reception of the reflected wave is measured, and this is converted into a distance and output.

That is, the ultrasonic distance detector 7 measures the condition of the hole wall at the above-mentioned elevation position over the entire circumference of the hole wall by one rotation.

The ultrasonic distance detector 7 is rotated by the motor 6 and lowered by the winch, so that the ultrasonic waves continuously scan the hole wall in a spiral shape, thereby improving the distance measurement. Can be implemented

The cross-sectional shape of the drilled hole obtained by such continuous scanning is different from the horizontal cross-sectional shape of the drilled hole, but it is sufficiently useful for determining the drilled hole shape.

On the other hand, a rotation angle detector 8 is provided in the case body 5, and as shown in FIG. 2, the rotation distance detector 8 and the conductive disk 15 in the rotation angle detector 8 are provided together with the ultrasonic distance detector 7. When the second contactor 18 contacts the non-conductive portion 16, the display of the ammeter 20 can be set to zero by rotating the second contactor 18, and thus the rotation angle of the ultrasonic distance detector 7, that is, a rough indication. The rotational position can be detected.

In this embodiment, the output waveform of the ammeter 20 is a pulse-like waveform having a long on-time, as shown in FIG. 3 (a). The distance data (hole wall data) output from the ultrasonic distance detector 7 at this time is as shown in FIG.

Therefore, FIG. 3 obtained by the ammeter 20 described above.
The distance data in the pulse section which is repeated at a constant interval as shown in (a) is evenly allocated (constant time width t) within the rotation angle as shown in FIG. That is, this allocation position is a plurality of positions in the inner peripheral direction of the hole wall.

The controller 11 performs such allocation of the distance data for each rotation angle and smoothing of the distance data as shown in FIG. 3 (c). Therefore, finally, for wireframe drawing creation,
The distance data for each assigned rotation angle is shown in FIG.
Sampling is performed as indicated by ○.

In this case, the rotation angle is within one rotation of the ultrasonic distance detector 7, and the change of the rotation speed within the rotation angle is negligible.

The computer 12 operates the winch 3 via the controller 11 to lower the suspending wire 4, and in the same manner as described above, the lift amount detector 9, the ultrasonic distance detector 7 and the rotation angle detector 8 are used. The measurement by is continuously performed.

That is, the vertical envelope of the drilled hole can be defined by lowering the ultrasonic distance detector 7 to detect the distance of the hole wall at each ascending / descending position.

Therefore, in the present invention, each of the detectors 7,
The signals obtained in 8 and 9 are subjected to processing such as amplification and smoothing by the controller, and then input to the computer 12, so that the computer 12 can obtain the rotation angle and the distance data as shown in FIG. Measured cross-section R with respect to the design cross-section P of the drill hole 2 at a predetermined elevation position
Can be calculated and this can be displayed on the display 12 as an image.

The measured cross-section R is the computer 1
Printing can be performed by the printer 14 connected to the printer 2, which has the advantage of facilitating the construction management report.

From the detected distance and the amount of elevation, the computer 12 measures the measured longitudinal section S with respect to the designed longitudinal section Q of the drill hole 2 at the set rotation angle, as shown in FIG.
Can be calculated and displayed on the display 13 as an image.

Further, the computer 12 calculates the hole wall shape over the entire length and the entire circumference of the excavation hole 2 from the three elements of the distance, the amount of elevation and the rotation angle, and the display 13 displays the 3 as shown in FIG. It becomes possible to display as a three-dimensional wireframe and a three-dimensional contour diagram as shown in FIG.

Further, based on the three-dimensional wire frame diagram obtained as described above, it is possible to easily estimate the bite rate of concrete into the excavation hole (actual concrete placement amount / designed concrete amount). .

Further, by moving up and down the ultrasonic distance detector 7 without rotating the motor 6, the up / down amount detector 9
Also, the vertical envelope of the drilled hole can be defined exactly from the elevation amount and the distance detected by the ultrasonic distance detector 7 as in the conventional hole wall measuring device.

[0040]

As described above, according to the present invention, an ultrasonic distance detector that can be lifted up and down in a drill hole by a winch, and a rotation for detecting the rotation angle of the motor of the ultrasonic distance detector. An angle detector and an elevation amount detector for detecting an elevation amount by the winch of the ultrasonic distance detector are provided, and the computer, based on the output of each of the detectors, a design standard for the entire circumference of the hole wall of the excavation hole. Is calculated, and the hole wall shape is displayed on the display according to the calculation result and is printed by the printer. Therefore, the hole wall shape of the excavation hole can be continuously and accurately over the entire circumference and the entire length. The effect is that it can be easily grasped.

Further, according to the present invention, an ultrasonic distance detector hung up and down in the excavation hole by a winch, and a rotation angle detector for detecting a rotation angle of the ultrasonic distance detector by a motor, Provided with a lift amount detector for detecting the lift amount by the winch of the ultrasonic distance detector, the computer, based on the output of each of the detectors,
By lowering and rotating the ultrasonic distance detector, the hole wall shape at the position where the hole wall of the excavation hole is spirally scanned is calculated, and the hole wall shape is displayed on the display according to the calculation result. Since it is configured to print, there is an effect that a hole wall shape can be efficiently and economically grasped.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a hole wall shape measuring device for an excavation hole according to an embodiment of the present invention.

FIG. 2 is a conceptual diagram showing a rotation angle detector in FIG.

3 is a time chart showing an output waveform of each part of the block in FIG. 1. FIG.

FIG. 4 is an explanatory view showing a cross-sectional shape of an excavation hole measured by the present invention.

FIG. 5 is an explanatory view showing a vertical cross-sectional shape of an excavation hole measured by the present invention.

FIG. 6 is a three-dimensional wire frame diagram showing a hole wall shape of an excavation hole measured by the present invention.

FIG. 7 is a three-dimensional contour diagram showing a hole wall shape of an excavation hole measured by the present invention.

[Explanation of symbols]

 2 Excavation hole 3 Winch 6 Motor 7 Ultrasonic distance detector 8 Rotation angle detector 9 Elevating amount detector 12 Computer 13 Display 14 Printer

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location G06T 1/00

Claims (2)

[Claims] 1. An ultrasonic distance detector hung up and down by a winch so as to be vertically movable, a motor for rotating the ultrasonic distance detector around a vertical axis in the drill hole, and the ultrasonic distance. A rotation angle detector that detects a rotation angle of the detector by the motor, a lift amount detector that detects a lift amount of the ultrasonic distance detector by the winch, the ultrasonic distance detector, a rotation angle detector, and A computer for calculating the hole wall shape with respect to the design standard of the entire circumference of the hole wall of the excavation hole based on each detection output of the elevation detector, a display for displaying the hole wall shape obtained by the operation by the computer, and the hole. A hole wall shape measuring device for an excavation hole, comprising a printer for printing a wall shape. 2. An ultrasonic distance detector suspended up and down in the excavation hole by a winch, a motor for rotating the ultrasonic distance detector around a vertical axis in the excavation hole, and the ultrasonic distance. A rotation angle detector that detects a rotation angle of the detector by the motor, a lift amount detector that detects a lift amount of the ultrasonic distance detector by the winch, the ultrasonic distance detector, a rotation angle detector, and Based on each detection output of the lift amount detector, by the descent and rotation of the ultrasonic distance detector, a computer for calculating the hole wall shape at the position where the hole wall of the excavation hole is spirally scanned, and the computer. A hole wall shape measuring device for an excavation hole, comprising: a display for displaying the hole wall shape obtained by calculation; and a printer for printing the hole wall shape.