JP2022011336A - Measurement device attached to anchor hole forming machine - Google Patents

Abstract

To provide an unprecedented practical anchor hole forming machine and a measurement device attached to the anchor hole forming machine.SOLUTION: In a measurement device attached to an anchor hole forming machine 20 that forms anchor holes 31 in a slope 51, a slide base 22 is equipped with a hole length measuring unit 1. The hole length measuring unit 1 is configured to measure the sliding amount of a rod holding unit 23 based on the distance data obtained by irradiating the rod holding unit 23 with a laser beam. The slide base 22 is equipped with a drilling angle measurement unit 2. The drilling angle measurement unit 2 is configured to measure the tilt angle of a drilling rod body 21 held by the rod holding unit 23.SELECTED DRAWING: Figure 1

Description

The present invention relates to a measuring device attached to an anchor hole forming machine.

For example, a ground anchor construction disclosed in Patent Document 1 has been proposed as a structure for suppressing slipping of a moving soil mass on a stable ground in a landslide area.

In this ground anchor work, an anchor hole is formed on the slope of the ground to be the construction target area, and then a tension material such as a PC steel wire is inserted into the anchor hole, and then the tip of the anchor hole is inserted. A grout material is injected into (bottom) to fix the tip of the tension material, and then a pressure receiving plate larger than the diameter of the anchor hole is attached to the tension material protruding from the anchor hole, and then the tension material is tensioned. It is constructed by pressing the pressure receiving plate against the surface of the moving soil mass.

In addition, this ground anchor work is constructed in large numbers in the construction target area, and the anchor holes that are indispensable for construction are formed using a drilling machine (anchor hole forming machine). It has a slide base and a rod holding portion that is slidably provided on the slide base and holds the excavation rod body so that the excavation rod body can rotate around the axis. It is configured to be inserted into a surface to excavate the slope.

The excavation rod body is composed of an outer pipe rod and an inner pipe rod arranged inside the outer pipe rod, and both the outer pipe rod and the inner pipe rod have a structure that can be divided into a plurality of rods. An excavation blade is provided at the tip of each of the outer pipe rod and the inner pipe rod at the tip.

By the way, the anchor hole is designed based on the ground survey conducted in advance in the construction target area, and the drilling length to reach an appropriate position in the stable ground and the drilling angle suitable for suppressing the movement of the moving soil mass after the construction. However, it requires skill to actually form this anchor hole as designed by using the above-mentioned anchor hole forming machine, and the work of forming this anchor hole is for the operator. It is a big burden. Especially in a site where the ground composition is complicated, there are cases where the fixed ground cannot be confirmed as designed and the deterrent effect cannot be exhibited.

That is, during excavation by the anchor hole forming machine, for example, when a stone in the ground or a hard stable ground is reached, the excavation direction may change when the excavation rod body hits a hard part. Unless the operator is an expert (operator who is familiar with the sound and vibration during excavation), excavation will be continued without noticing that the excavation direction has changed, and the work accuracy will be significantly reduced.

Therefore, when excavating an anchor hole, the supply pressure and rotation speed are changed according to the hardness of the ground and changes in the stratum, and the amount of water sent is adjusted to diligently discharge the drilling waste (slime) accumulated in the hole. However, it is still troublesome. In addition, since the depth inserted in the ground has been confirmed by the number of split rods to be joined, there is a high possibility that human errors such as measurement errors and recording errors of workers will occur, and false reports and rework. It is a factor that causes construction.

Furthermore, the measurement information recorded during the excavation work must be returned from the construction site to the office and input to the management computer, which is also a heavy burden on the worker.

Special Fair No. 5-85596 Gazette

The present invention has been made in view of the above-mentioned current situation, and provides a measuring device attached to a practical anchor hole forming machine which has never existed in the past.

The gist of the present invention will be described with reference to the accompanying drawings.

A measuring device attached to the following anchor hole forming machine 20 for forming an anchor hole 31 on a slope 51. The slide base 22 is provided with a drilling length measuring unit 1, and the drilling length measuring unit 1 is provided. Is configured to measure the slide amount of the rod holding portion 23 from the distance data obtained by irradiating the rod holding portion 23 with a laser, and the slide base 22 is provided with a drilling angle measuring unit 2. The drilling angle measuring unit 2 is configured to measure the inclination angle of the drilling rod body 21 held by the rod holding unit 23, and further, the drilling length measuring unit 1 and the drilling angle. The present invention relates to a measuring device attached to an anchor hole forming machine, characterized in that a measurement information display unit 3 for displaying each measurement information obtained by the measurement unit 2 is provided.
A rod holding portion 23 for holding the excavation rod body 21 is slidably provided on the slide base 22, and the excavation rod body 21 held by the rod holding portion 23 is configured to be parallel to the slide base 22. An anchor hole forming machine that excavates the slope by inserting the excavation rod body 21 into the slope in a state parallel to the slide base 22 by sliding the rod holding portion 23 with respect to the slide base 22. ..

Further, in the measuring device attached to the anchor hole forming machine according to claim 1, it is connected to the drilling length measuring unit 1 and the drilling angle measuring unit 2 to record each measurement information, and the measurement information is wirelessly recorded. Measurements attached to an anchor hole forming machine, comprising an information recording unit 4 for transmitting via a communication line and an information processing unit 5 for receiving and processing measurement information transmitted from the information recording unit 4. It is related to the device.

Further, in the measuring device attached to the anchor hole forming machine according to claim 2, the drilling length measuring unit 1 and the drilling angle measurement are shown in the ground cross-sectional view 10 created by conducting a ground survey in the construction target area. Anchor hole characterized in that the information processing unit 5 is provided with an image creation function for creating an image in which the excavation status of the excavation rod body 21 analyzed from the respective measurement information obtained by the unit 2 is superimposed. It is related to the measuring device attached to the forming machine.

Further, in the measuring device attached to the anchor hole forming machine according to any one of claims 1 to 3, the measurement information display unit 3 is an anchor hole forming machine characterized by being a portable terminal owned by an operator. It is related to the measuring device attached to.

Since the present invention is configured as described above, it is possible to easily and satisfactorily form an anchor hole even if the person is not an expert, and the burden on the operator can be reduced. It is a measuring device attached to the machine.

It is operation explanatory drawing of the main part of this Example. It is explanatory drawing of the main part of this Example. It is a usage state explanatory drawing of the main part of this Example. It is explanatory drawing of the ground investigation in the construction target area. It is a process drawing explaining the construction method of the ground anchor construction 30 using this Example.

Embodiments of the present invention which are considered to be suitable will be briefly described by showing the operation of the present invention based on the drawings.

In the present invention, the excavation rod body 21 is inserted into the slope 51 for excavation by operating the anchor hole forming machine 20 and sliding the rod holding portion 23 with respect to the slide base 22.

When excavating the anchor hole 31, the drilling length measuring unit 1 measures the slide amount of the rod holding portion 23 from the distance data obtained by irradiating the rod holding portion 23 with a laser. The drilling length of the hole 31 is obtained, and the tilt angle of the excavation rod body 21 held by the rod holding portion 23 is measured by the drilling angle measuring unit 2, and from this, the drilling of the anchor hole 31 is performed. The angle is obtained, and the measurement information (drilling length and drilling angle) obtained by the drilling length measuring unit 1 and the drilling angle measuring unit 2 is displayed on the measurement information display unit 3.

For example, an operator who operates the anchor hole forming machine 20 can check the drilling length and the drilling angle by looking at the display of the measurement information display unit 3, grasp the current drilling status, and perform the operation. If the drilling angle seems to deviate from the proper angle, the excavation work is continued while performing the operation to correct it to the proper angle, and the excavation is stopped when the planned drilling length is reached.

Therefore, if the anchor hole forming machine 20 is operated while looking at the measurement information display unit 3, even a non-expert person can easily and satisfactorily form the anchor hole 31.

Specific examples of the present invention will be described with reference to the drawings.

This embodiment is a measuring device attached to an anchor hole forming machine 20 that forms an anchor hole 31 on a slope 51.

The anchor hole forming machine 20 used in this embodiment is an existing drilling machine, and is installed on a gantry 6 provided in a construction target area for constructing the ground anchor work 30 as shown in FIG. , A drilling portion (rotary percussion drill structure), a support portion 20B that supports the drilling portion 20A in an inclined and rotatable manner, and an operation portion (not shown) that operates the drilling portion 20A and the support portion 20B. Has been done.

The drilling portion 20A is composed of a slide base 22 and a rod holding portion 23 that is slidably provided on the upper surface of the slide base 22 in the front-rear direction and holds the excavation rod body 21 at the front end portion.

Further, the excavation rod body 21 held by the rod holding portion 23 is configured to be parallel to the slide base 22.

Therefore, by sliding the rod holding portion 23 forward with respect to the slide base 22, the excavation rod body 21 is inserted into the slope 51 in a state parallel to the slide base 22 and excavated.

Further, the rod holding portion 23 has a function of moving the excavation rod body 21 in the front-rear direction while holding the excavation rod body 21, a function of axially rotating the excavation rod body 21, and a function of striking the excavation rod body 21.

The excavation rod body 21 is composed of an outer pipe rod 21a and an inner pipe rod (not shown) arranged inside the outer pipe rod 21a, and both the outer pipe rod 21a and the inner pipe rod can be divided into a plurality of rods. It has a structure, and an excavation blade is provided at the tip of each of the state-of-the-art outer pipe rod 21a and the inner pipe rod.

Reference numeral 22a is a bearing portion that allows the excavation rod body 21 to be inserted and rotatably supported.

The measuring device displays the measurement information obtained by the drilling length measuring unit 1 and the drilling angle measuring unit 2 provided on the upper surface of the slide base 22, and the drilling length measuring unit 1 and the drilling angle measuring unit 2. An information recording unit 4 connected to a measurement information display unit 3, a drilling length measuring unit 1 and a drilling angle measuring unit 2, recording each measurement information, and transmitting this measurement information via a wireless communication line, and this It has an information processing unit 5 that receives and processes measurement information transmitted from the information recording unit 4, and transmits the processed information to the measurement information display unit 3 via a wireless communication line.

Specifically, the drilling length measuring unit 1 is a laser range finder as shown in FIG. 1, and irradiates the rear end portion of the rod holding portion 23 that moves forward with respect to the slide base 22 with a laser. It is configured to measure the slide amount of the rod holding portion 23 from the distance data obtained by receiving the reflected reflected light.

Therefore, by measuring the slide amount of the rod holding portion 23, the drilling length of the anchor hole 31 can be obtained.

The drilling angle measuring unit 2 is an electronic inclinometer as shown in the figure, and is configured to measure the inclination angle of the excavation rod body 21 held by the rod holding unit 23.

Therefore, the drilling angle of the anchor hole 31 can be obtained by measuring the inclination angle of the excavation rod body 21 held by the rod holding portion 23.

The measurement information display unit 3 is a portable terminal (smartphone or tablet) held by the operator as shown in FIGS. 3 is provided.

The measurement information display unit 3 receives and displays information transmitted from the information processing unit 5, which will be described later, via a wireless communication line.

The information recording unit 4 is a data logger as shown in FIGS. 1 and 2, and is configured to be connected to the above-mentioned drilling length measuring unit 1 and drilling angle measuring unit 2 to record each measurement information. There is.

Further, the information recording unit 4 is provided with a wireless signal function, and the data recorded by the information recording unit 4 is transmitted to the information processing unit 5 at a remote location via a wireless communication line (internet line), and is collected and processed. Information is transmitted from the information processing unit 5 to a terminal or the like (measurement information display unit 3) owned by a field worker via a wireless communication line (Internet line) (see FIG. 2). The information processing unit 5 may be provided in the construction target area.

As shown in FIG. 2, the information processing unit 5 is a management computer (data center: server), has a transmission / reception function via a wireless communication line (internet line), and has a measurement obtained from the above-mentioned information recording unit 4. It receives information, stores it, and processes it.

Further, the information processing unit 5 obtained the drilling length measuring unit 1 and the drilling angle measuring unit 2 in the ground cross-sectional view 10 created by conducting a ground survey in the construction target area as shown in FIG. 3, respectively. It is equipped with an image creation function that creates an image that superimposes the excavation status of the excavation rod body 21 that is analyzed from the measurement information of.

This image is also transmitted to a terminal or the like (measurement information display unit 3) owned by a field worker via a wireless communication line (Internet line).

In the above-mentioned ground survey, as shown in FIG. 4, a ground cross-sectional view 10 is created by analyzing from the core 50a obtained by boring a plurality of locations in the construction target area 50 (for example, a landslide area).

Reference numeral 11 is a ground survey device that accumulates survey data based on creating the ground cross-sectional view 10 and transmits it to the information processing unit 5, 51 is a slope, 52 is a stable ground, and 53 is a moving soil mass.

A method of constructing the ground anchor construction 50 using the present embodiment having the above configuration will be described.

First, the anchor hole 31 is formed on the slope 51 (see (a) in FIG. 5) of the ground which is the construction target area 50.

Specifically, the excavation rod body 21 is inserted into the slope 51 by operating the anchor hole forming machine 20 installed at a predetermined position on the slope 51 and sliding the rod holding portion 23 with respect to the slide base 22. And excavate. Specifically, the rod holding portion 23 excavates to a predetermined depth by sliding and striking one excavation rod body 21 forward while rotating the axis, and then the other excavation rod body 21 is excavated to another excavation rod. Excavation rods 21 connected by connecting the bodies 21 and connected by the rod holding portion 23 are excavated to a predetermined depth by sliding and striking forward while rotating the axis, and thereafter, excavation of the number according to the drilling length. One anchor hole 31 is formed by repeating the same work while connecting the rod bodies 21.

Further, when excavating the anchor hole 31, the drilling length measuring unit 1 measures the slide amount of the rod holding portion 23 from the distance data obtained by irradiating the rod holding portion 23 with a laser. The drilling length of the anchor hole 31 is obtained by accumulating the measured lengths per unit, and the drilling angle measuring unit 2 measures the inclination angle of the excavation rod body 21 held by the rod holding unit 23. From this, the drilling angle of the anchor hole 31 is obtained, and the respective measurement information (drilling length and drilling angle) obtained by the drilling length measuring unit 1 and the drilling angle measuring unit 2 is the measurement information display unit. It is displayed in a timely manner at 3.

For example, an operator who operates the anchor hole forming machine 20 can check the drilling length and the drilling angle by looking at the display of the measurement information display unit 3, grasp the current drilling status, and perform the operation. If the drilling angle seems to deviate from the proper angle, the excavation work is continued while performing the operation to correct it to the proper angle, and the excavation is stopped when the planned drilling length is reached.

Therefore, if the anchor hole forming machine 20 is operated while looking at the measurement information display unit 3, the anchor hole 31 can be easily and satisfactorily formed even by a non-expert (see (b) in FIG. 5).

Subsequently, a pulling material 32 such as a PC steel wire is inserted into the anchor hole 31, and then a grout material 33 is injected into the tip (bottom) of the anchor hole to fix the tip of the pulling material 32, and then A pressure receiving plate 34 larger than the diameter of the anchor hole 31 is attached to the pulling material 32 protruding from the anchor hole 31 (see (c) in FIG. 5), and then the tensioning material 32 is tensioned to cause the pressure receiving plate 34. The grout material 33 is injected again into the anchor hole 31 from the opening of the pressure receiving plate 34 while being pressed against the surface of the moving soil mass 53 (see (d) in FIG. 5).

Since this embodiment is configured as described above, the anchor hole 31 can be easily and satisfactorily formed even by a non-skilled person, and the burden on the operator can be reduced.

In addition, by proceeding with drilling while comparing with the survey results, it is possible to identify the position of the basement layer where the anchor is to be fixed, and it is possible to expect a more reliable ground suppression effect.

Further, in this embodiment, while there is a demand that a large-scale device is not attached to the anchor hole forming machine 20 brought to the slope 51, the measuring device is not a large-scale one and is provided in the anchor hole forming machine 20 due to its compact structure. But there is no problem.

Further, in this embodiment, the information recording unit 4 connected to the drilling length measuring unit 1 and the drilling angle measuring unit 2 to record each measurement information and transmitting the measurement information via the wireless communication line, and the information recording unit 4 thereof. Since it has an information processing unit 5 that receives and processes the measurement information transmitted from the information recording unit 4, the drilling length and the drilling angle measured by the drilling length measuring unit 1 and the drilling angle measuring unit 2 are good. Can be processed.

Further, this embodiment is analyzed from the measurement information obtained by the drilling length measuring unit 1 and the drilling angle measuring unit 2 in the ground cross-sectional view 10 created by conducting a ground survey in the construction target area 50. Since the information processing unit 5 is equipped with an image creation function for creating an image in which the excavation status of the excavation rod body 21 is superimposed, the operator can see it in the ground in addition to the drilling length and drilling angle of the anchor hole 31. It is possible to perform the work well while imagining the excavation situation of the excavation rod body 21, which cannot be done, and it is possible to confirm the important anchoring ground depth in the anchor hole.

Further, in this embodiment, since the measurement information display unit 3 is a portable terminal owned by the worker, all the workers having the measurement information display unit 3 can proceed with the work while sharing various information.

The present invention is not limited to this embodiment, and the specific configuration of each constituent requirement can be appropriately designed.

1 Drilling length measurement unit 2 Drilling angle measurement unit 3 Measurement information display unit 4 Information recording unit 5 Information processing unit
10 Ground cross section
20 Anchor hole forming machine
21 Excavation rod body
22 Slide base
23 Rod holder
31 Anchor hole
51 slope

Claims (4)

A measuring device attached to the following anchor hole forming machine that forms an anchor hole on a slope. The slide base is provided with a drilling length measuring unit, and the drilling length measuring unit is the rod holding unit. It is configured to measure the slide amount of the rod holding portion from the distance data obtained by irradiating the rod with a laser, and the slide base is provided with a drilling angle measuring unit, and the drilling angle measuring unit is provided. Measurement information that is configured to measure the inclination angle of the excavated rod body held by the rod holding portion, and further displays measurement information obtained by the drilling length measuring unit and the drilling angle measuring unit. A measuring device attached to an anchor hole forming machine, characterized in that a display unit is provided.
A rod holding portion for holding the excavation rod body is slidably provided on the slide base, and the excavation rod body held by the rod holding portion is configured to be parallel to the slide base. An anchor hole forming machine that excavates the slope by inserting the excavation rod body into the slope in a state parallel to the slide base by sliding the rod holding portion. In the measuring device attached to the anchor hole forming machine according to claim 1, the measurement information is recorded by being connected to the drilling length measuring unit and the drilling angle measuring unit, and the measurement information is recorded via a wireless communication line. A measuring device attached to an anchor hole forming machine, which has an information recording unit for transmitting information and an information processing unit for receiving and processing measurement information transmitted from the information recording unit. In the measuring device attached to the anchor hole forming machine according to claim 2, the drilling length measuring unit and the drilling angle measuring unit obtained the ground cross-sectional view created by conducting a ground survey in the construction target area. The measurement attached to the anchor hole forming machine, which is characterized in that the information processing unit is provided with an image creation function for creating an image in which the excavation status of the excavation rod body analyzed from each measurement information is superimposed. Device. In the measuring device attached to the anchor hole forming machine according to any one of claims 1 to 3, the measurement information display unit is attached to the anchor hole forming machine characterized by being a portable terminal owned by an operator. Measuring device.

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