KR20130137464A - Apparatus and system for borehole viewer - Google Patents

Abstract

Provided are an apparatus and a system for viewing a borehole which can reduce a time to scan the inside of a borehole by obtaining inside images of the borehole using one front camera and two side cameras and be commonly used for vertical boring, inclined boring and horizontal boring. The apparatus for viewing a borehole which is inserted into a borehole in order to obtain images of the front and the side of the borehole comprises: a cylindrical body: a connection part which is connected to the body in order to connect a weight or basic support according to kinds of boring; a front camera window which is formed on the front of the body; one front camera which is placed inside the front window and obtains a front image of the borehole; a side camera window which is formed the side of the body along the circumference; two side cameras which are placed at the upper part and the lower part of the inside of the side camera window and obtain images of a surface which is located at the vertically same plane inside the borehole by placing a double sided mirror at the center and installing image sensors at the upper part and the lower part in order to obtain entire 360 surface images of a joint surface; a front white LED for providing lighting for the front camera window; and a side white LED for providing lighting for the side camera window.

Description

Borehole Viewer Device and System {APPARATUS AND SYSTEM FOR BOREHOLE VIEWER}

The present invention relates to a borehole viewer, and more particularly, to a borehole viewer device and system for acquiring an image inside the borehole in order to grasp the characteristics of joints and the like present in the target ground.

In general, in connection with the drilling of the ground or rock in the design of a structure at a construction site or a civil engineering site, discontinuities (joint, convenient, stratified, foliated, and faulted) distributed in underground rocks that have an absolute influence on the stability of civil structures. Etc., drilling surveys of tunnels, slopes and foundations are conducted.

For example, it is important to understand the characteristics of joints in the ground to apply the GIN (Grouting Intensity Number) technique when performing steel pipe multi-grouting or pre-grinding in tunnels. In particular, it is necessary to investigate the number of joints with an injectable gap in order to estimate the required injection volume.

At this time, various devices have been developed and utilized so far to obtain a borehole image data. In particular, the Borehole scanners Televiewer and BIPS (Borehole Image Processing System) developed in the 1990s are considered to be very useful for analyzing the joint structure by capturing the borehole state as an image under quantitative position coordinates.

As a feature of these two devices, BIPS captures the actual image of the borehole wall using the optical characteristics of the camera, while the televiewer measures the intensity of the ultrasonic waves reflected on the borehole's arm to image the state of the borehole. .

In this way, the ground survey for injection should be done before grouting using equipment such as BIPS, and after injection, a system for checking the injection should be equipped. In the case of BIPS, since the inside of the borehole is intended to be irradiated, injection is possible only in the vertical direction. However, when irradiating in front of the tunnel face, it should be composed of a system capable of horizontal irradiation, and it is necessary to increase the scanning speed inside the borehole.

However, in the BIPS according to the related art, since one image sensor and a rotating mirror are used, there is a problem that a considerable time is required for scanning inside the borehole. In addition, the BIPS system used in Korea has a problem that it is quite expensive as foreign equipment.

1) Republic of Korea Patent No. 10-409048 (application date: July 24, 2001), the title of the invention: "Drilling device for measuring the direction of the discontinuous surface" 2) Republic of Korea Patent No. 10-963263 (application date: December 16, 2009), the title of the invention: "Three-dimensional block analysis method for multiple excavated surfaces of the tunnel" 3) Republic of Korea Patent No. 10-413294 (application date: October 9, 2001), the title of the invention: "Directional and joint block formation and stability analysis method of joints distributed on rock slopes" 4) Republic of Korea Patent Publication No. 2011-26062 (published: March 15, 2011), the title of the invention: "Crack measurement apparatus through the borehole imaging for tunnel blasting impact analysis" 5) Republic of Korea Patent No. 10-1123863 (application date: September 23, 2011), the title of the invention: "System and method for investigation of discontinuous surface distribution of tunnel face"

The technical problem to be solved by the present invention for solving the above-mentioned problems, the borehole viewer device that can reduce the scanning time inside the borehole by acquiring the inside of the borehole using one front camera and two side cameras And to provide a system.

Another technical problem to be achieved by the present invention is to provide a borehole viewer device and system that can be commonly used for vertical drilling, inclined drilling and horizontal drilling and can easily examine the inside of the borehole.

As a means for achieving the above-described technical problem, the borehole viewer device according to the present invention is inserted into a borehole (borehole) in the borehole viewer device for obtaining the front and side images of the borehole, the cylindrical body ; Fasteners are fastened to the main body so as to connect the weight or the basic support according to the type of drilling; A front camera window formed on the front of the main body; One front camera disposed in the front camera window to obtain an image of the front of the borehole; A side camera window formed in an outer circumferential direction on a side of the main body; A cross section disposed on the same vertical plane in the perforation, disposed at the upper and lower sides of the side camera window, and having a mirror mirror positioned at the center thereof to obtain an entire joint surface image of 360 ° with respect to the surface of the perforation, and an image sensor mounted at the top and the bottom thereof. Two side cameras simultaneously acquiring images; A front white LED providing illumination to the front camera window; And a side white LED providing illumination to the side camera window.

Here, the main body, when the type of drilling is a vertical drilling or inclined drilling, can be used in combination with the weight of the cylindrical pipe form connected to the fastener, the main body, the boring hole viewer using a tripod As a lowering method, the power and data cables packed with the waterproof shield cable can be operated as the support shaft.

Here, when the type of the perforation is a horizontal perforation, the main body is configured in the form of a combination with the basic support, it is used by continuously connecting additional supports, the main body, while continuously connecting the additional support of the square pipe form The additional support may be operated with the support shaft.

Here, by installing a support fixing frame for fixing the additional support of the square pipe form not to move or rotate to prevent the borehole viewer device to rotate or move vertically or horizontally.

The side camera may include an upper camera disposed on an upper side of the side camera window; A lower camera disposed under the side camera window; And a double-sided mirror disposed diagonally between the upper camera and the lower camera to acquire a side image of the borehole.

Here, the front camera and the side camera may acquire a borehole image using a CMOS digital image sensor having 2MB to 5MB pixels, respectively.

Here, the front and side cameras may adjust the focus automatically in response to a change in diameter of the perforation using an auto focusing lens.

As another means for achieving the above-described technical problem, the borehole viewer system according to the present invention, in the borehole viewer system for processing the image in the borehole obtained through the borehole viewer, to obtain a front image of the borehole One front camera; Two side cameras for acquiring side images of the borehole; A camera interface board driving the front camera and the side camera, respectively; A LAN hub that collects image data acquired through the camera interface board; And an operating computer for storing image data transmitted through the LAN hub in units of frames by pre-installed operating software, wherein the side cameras are disposed above and below the side camera window, and are 360 degrees with respect to the surface of the perforation. (2) A double-sided mirror is disposed at the center of the joint to acquire an image of the entire joint surface, and an image sensor is mounted at the top and the bottom thereof to simultaneously acquire a cross-sectional image located on the same vertical plane in the perforation.

The camera interface board may include: a data sorter for classifying borehole front and side image data obtained from the front and side cameras; A data memory for storing the classified data; A main processor for processing the classified data; And an Ethernet driver for transmitting the image data obtained from the front and side cameras, respectively, using an Ethernet based TCP / IP method.

According to the present invention, the inside of the borehole scanning time can be shortened by acquiring the inside of the borehole using one front camera and two side cameras.

According to the present invention, the vertical drilling, the diagonal drilling and the horizontal drilling can be used in common, and the inside of the borehole can be easily irradiated.

According to the present invention, it is possible to manufacture a borehole viewer device at a lower cost than conventional BIPS.

1 is a view showing a borehole viewer device according to an embodiment of the present invention.
2 is a diagram illustrating a main body of a borehole viewer device according to an embodiment of the present invention.
3 is a view illustrating waterproofing of the cable connection when the fastener is coupled in the borehole viewer device according to an embodiment of the present invention.
4 is a view showing a side camera disposed in the borehole viewer device according to an embodiment of the present invention.
5 is a photograph illustrating a production sample of a borehole viewer device according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating a field test on a manufactured sample of a borehole viewer device according to an exemplary embodiment of the present invention. FIG.
7 is a block diagram of a borehole viewer system according to an embodiment of the present invention.
8 is a diagram illustrating a borehole viewer device for vertical and inclined drilling according to an embodiment of the present invention.
9A to 9C are diagrams illustrating a borehole viewer device for horizontal drilling according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, except to exclude other components unless otherwise stated.

 The borehole viewer device according to the embodiment of the present invention is implemented to be applicable to various sizes of boring diameters. To this end, the drilling standards are summarized in Table 1 below. Table 1 shows the diameters of each type of ball, but mainly used for drilling, but the grouting injection hole is smaller than the NX ball borehole viewer device according to an embodiment of the present invention to be applied to AX ball with a hole diameter of 50mm level The outer diameter of is manufactured to 45mm level.

1 is a view showing a borehole viewer device according to an embodiment of the present invention, Figure 1a) is a side view of the borehole viewer device, Figure 1b is a front view of the borehole viewer device, Figure 1 C) represents the weight.

Referring to FIG. 1, the borehole viewer device 100 according to an embodiment of the present invention is a borehole viewer device inserted into a borehole to obtain front and side images of the borehole, the main body 110, The fastening part 120, the front camera window 130, the side camera window 140, the front white LED 150, the side white LED 160, the wheel 170, and the weight 180 are included. One front camera is disposed in the camera window 130, and two side cameras are disposed in the side camera window 140.

The borehole viewer device 100 according to an embodiment of the present invention obtains front and side image data of the perforation using three cameras, which are high resolution image sensors of 2M pixels or more.

As shown in FIG. 1, the borehole viewer device 10 according to an embodiment of the present invention may be centered in the perforation using wheels 170 arranged in a triangular shape at the front and the rear. By doing so, it can be used in common for vertical drilling and inclined and horizontal drilling. In particular, in the case of vertical and oblique perforation, in order to offset the buoyancy generated when the water is filled inside the perforation as shown in c) of FIG. Can be measured.

The main body 110 has a cylindrical shape, and the fastening part 120 is fastened with the main body 110 so as to connect the weight 180 or the basic support according to the type of drilling.

The front camera window 130 is formed of a transparent material on the front of the body.

One front camera is disposed in the front camera window 130 to acquire an image of the front of the borehole.

The side camera window 140 is formed on the side of the main body in the material circumferential direction.

Two side cameras are disposed in the upper and lower portions of the side camera window, and a double-sided mirror is disposed at the center thereof so as to obtain a 360 ° whole joint surface image with respect to the surface of the perforation, and an image sensor is mounted at the top and the bottom of the perforation. Simultaneously acquire cross-sectional images located on the same vertical plane.

Front white LED 150 provides illumination to the front camera window 130 and side white LED 160 provides illumination to the side camera window 140.

2 is a diagram illustrating a main body of a borehole viewer device according to an embodiment of the present invention.

As shown in FIG. 2, the main body 110 of the borehole viewer apparatus 100 according to an embodiment of the present invention includes one front camera and two side cameras 130 and a side camera window 140, respectively. ) And each camera provides illumination using white LEDs 150 and 160. In addition, the fastener 120 is arranged to connect the weight or the basic support according to the type of perforation.

3 is a view illustrating waterproofing of the cable connection when the fastener is coupled in the borehole viewer device according to an embodiment of the present invention.

As shown in FIG. 3, the borehole viewer device 100 according to the embodiment of the present invention, loosens the fastener 120 in the field, and connects the power line and the data cable of the main body 110 with the extension cable 190. After that, by closing the fastener 12, the interior thereof is sealed to maintain waterproofness. That is, the main body 110 and the fastener 120 are fastened by the waterproof connector 210 and sealed to each other to be waterproofed.

On the other hand, Figure 4 is a view showing a side camera disposed inside the borehole viewer device according to an embodiment of the present invention, Figure 5 is a photograph illustrating a manufacturing sample of the borehole viewer device according to an embodiment of the present invention. 6 is a view showing an on-site test of the production sample of the borehole viewer device according to an embodiment of the present invention.

In the borehole viewer device 100 according to the embodiment of the present invention, the side camera 220 includes an upper camera 221, a lower camera 222, and a double-sided mirror 223, and the side camera 220 is disposed. And the configuration is as shown in FIG. 4.

The side camera 220 has a structure as shown in FIG. 4 in order to obtain a 360 ° image of the entire joint surface with respect to the surface of the perforation, and has a double-sided mirror 223 disposed at the center thereof, respectively, at the top and the bottom thereof. By mounting the upper camera 221 and the lower camera 222, it is possible to simultaneously acquire a cross-sectional image located on the same vertical surface in the perforation.

Since the borehole viewer according to the related art uses a rotating mirror and a single camera rotating at 360 °, the measurement speed is very slow and the image quality of the image measured and photographed on the joint surface of the perforated surface is not excellent. However, the side camera 220 according to the embodiment of the present invention can solve this problem.

In particular, the image sensor used in the upper camera 221 and the lower camera 222 is a CMOS type digital image sensor having 2M pixels or more and up to 5M pixels, so that the image quality and the resolution of the image are improved compared to the existing equipment. do.

In the production sample of the borehole viewer device 100 according to the embodiment of the present invention, as shown in FIG. 5, the design parameters such as the position and angle of the side camera 220, the angle and size of the double-sided mirror, and the like are found. Is made for.

In addition, the manufactured borehole viewer device 100, as shown in Figure 6, install the borehole viewer device 100 in the perforation 300 to perform a site evaluation, at this time, such a borehole viewer device ( It is preferable to consider waterproofing in order to obtain a normal measured image when making a sample of 100).

On the other hand, Figure 7 is a block diagram of a borehole viewer system according to an embodiment of the present invention.

Referring to FIG. 7, a borehole viewer system according to an embodiment of the present invention includes a front and rear camera, camera interface boards 410a, 410b, and 410c, a LAN hub 420, and an operating computer 430. The operating computer 430 is operated by operating software 440.

One front camera and two rear cameras are mounted with camera interface boards 410a, 410b, and 410c, respectively. That is, the three cameras located in the main body 110 of the borehole viewer are driven by the camera interface boards 410a, 410b, and 410c mounted in the main body 110, respectively. / IP-based Ethernet is transmitted and connected to the operating computer 430 is transmitted.

Specifically, the camera interface boards 410a, 410b, and 410c include a data sorter 411, a data memory 412, a main processor 413, and an ethernet driver 414. do.

The data classifying unit 411 of the camera interface boards 410a, 410b, and 410c classifies the borehole front and side image data obtained from the front and side cameras. In addition, the data memory 412 stores the classified data, and the main processor 413 processes the classified data. In addition, the Ethernet driver 414 transmits the image data obtained from the front and side cameras, respectively, by the TCP / IP-based Ethernet method.

The LAN hub 420 collects image data transmitted from the camera interface boards 410a, 410b, and 410c.

Therefore, after the image data is collected through the LAN hub 420, each image is stored in units of frames by the operating software 440 installed in the operating computer 430. In particular, the lens of the camera, which is an image sensor, can automatically adjust focus by using an auto focusing (AF) lens, even if some change occurs in the diameter of the perforation, thereby obtaining a clear image.

8 is a view illustrating a borehole viewer device for vertical and inclined drilling according to an embodiment of the present invention.

In the borehole viewer apparatus according to the embodiment of the present invention, since the water is often filled in the interior of the perforation in the case of the vertical drilling and the diagonal drilling, as shown in FIG. By connecting the weight 180 in the form of a cylindrical pipe to the fastener 120 is completely coupled to the body 110 and the weight 180, so that the extension cable 190 passes through the center of the weight 180 It also uses a tripod to form a vertical perforation using a tripod.

9A to 9C are diagrams illustrating a borehole viewer device for horizontal drilling according to an embodiment of the present invention, and FIG. 9A shows connecting a basic support, and FIG. 9A shows connecting an extension support. 9c represents the support frame.

As shown in FIG. 9A, the basic support 230 for connecting the extension support is connected to the fastener 120 of the main body 110, and further, as shown in FIG. 9B according to the drilling depth, the additional support ( By extending the connection 240, the measurement can be performed by folding along the perforation.

In particular, in order to prevent the borehole viewer device 100 from rotating or vertically or horizontally moving during the measurement of the borehole, as shown in FIG. 9C, a support fixing frame 250 is installed at the inlet of the hole, and a rectangular pipe shape It is preferable to operate the borehole viewer device 100 in a fixed state so that the additional support 240 does not move or rotate. In this case, the extension cable 190, which is a power and data cable, may be embedded in a groove on the surface of the additional supporter 240 to be fixed with a clip.

Specifically, the operation method of the borehole viewer device according to the type of drilling is shown in Table 2 below.

As shown in FIG. 8, the borehole viewer device 100 according to the embodiment of the present invention is configured in a form in which the main body 110 and the weight 120 are coupled to each other for vertical drilling and inclined drilling. By using a tripod, the borehole viewer is drilled down into the hole, and the extension cable 190, which is a power and data cable packed with a waterproof shield cable, is operated as a support shaft.

In addition, as shown in Figures 9a to 9c, the borehole viewer device 100 according to an embodiment of the present invention is configured in the form of combining the main body 110 and the basic support 230 for horizontal drilling , The additional support 240 is configured to connect continuously, and the support 240 is further connected and pushed into the borehole viewer device 100, the support 240 is operated as a support shaft.

As a result, according to an exemplary embodiment of the present invention, an internal borehole scanning time may be shortened by acquiring an internal borehole image using one front camera and two side cameras. In addition, it can be commonly used for vertical drilling, inclined drilling and horizontal drilling, and also can easily inspect the inside of the borehole, and can manufacture a borehole viewer device at a lower cost than conventional BIPS.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: borehole viewer device
110:
120: fastener
130: front camera window
140: side camera window
150: front white LED
160: side white LED
170: wheel
180: weight
190: extension cable
210: waterproof connector
220: side camera
221: Upper Camera
222: Lower Camera
223: double-sided mirror
230: base support
240: additional support
250: support frame
300: on-site borehole
410a, 410b, 410c: camera interface board
411: Data sorter
412: Data Memory
413: main processor
414: Ethernet Driver
420: LAN hub
430: operating computer
440: operating software

Claims (13)

A borehole viewer device inserted into a borehole to acquire front and side images of the borehole,
A cylindrical body;
Fasteners are fastened to the main body so as to connect the weight or the basic support according to the type of drilling;
A front camera window formed on the front of the main body;
One front camera disposed in the front camera window to obtain an image of the front of the borehole;
A side camera window formed in an outer circumferential direction on a side of the main body;
A cross section disposed on the same vertical plane in the perforation, disposed at the upper and lower sides of the side camera window, and having a mirror mirror positioned at the center thereof to obtain an entire joint surface image of 360 ° with respect to the surface of the perforation, and an image sensor mounted at the top and the bottom thereof. Two side cameras simultaneously acquiring images;
A front white LED providing illumination to the front camera window; And
Side white LEDs provide illumination to the side camera windows
Borehole viewer device comprising a. The method of claim 1,
The main body is a borehole viewer device, characterized in that used in combination with a weight in the form of a cylindrical pipe connected to the fastener, when the type of drilling is vertical or oblique drilling. 3. The method of claim 2,
The main body is a method of lowering the borehole viewer into a hole by using a tripod, the borehole viewer device characterized in that it is operated using a power and data cable packed with a waterproof shield cable as a support shaft. The method of claim 1,
The main body, when the type of the perforation is a horizontal perforation, the borehole viewer device, characterized in that it is configured in combination with the basic support, it is used by connecting additional support continuously. 5. The method of claim 4,
The main body is a borehole viewer device, characterized in that operated by using the additional support as a support shaft while continuously connecting the additional support in the form of a square pipe. The method of claim 5,
Borehole viewer device characterized in that the borehole viewer device to prevent the borehole viewer device to rotate or move vertically or horizontally by installing a support fixing frame for fixing the additional support of the square pipe form so as not to move or rotate. The method of claim 1, wherein the side camera,
An upper camera disposed above the side camera window;
A lower camera disposed under the side camera window; And
Double-sided mirror disposed diagonally between the upper camera and the lower camera to obtain a side image of the borehole
Borehole viewer device comprising a. The method of claim 7, wherein
And the front and side cameras acquire a borehole image using a CMOS digital image sensor having 2MB to 5MB pixels, respectively. The method of claim 7, wherein
And the front and side cameras automatically adjust focus in response to a change in diameter of the perforation using an auto focusing lens. A borehole viewer system for processing an image in a borehole obtained through a borehole viewer,
One front camera for acquiring the front image of the borehole;
Two side cameras for acquiring side images of the borehole;
A camera interface board driving the front camera and the side camera, respectively;
A LAN hub that collects image data acquired through the camera interface board; And
Operating computer for storing the image data transmitted through the LAN hub in units of frames by the pre-installed operating software
Including,
The side cameras are arranged at the top and bottom of the side camera window, the mirror is placed on the center so as to obtain a 360-degree whole joint image with respect to the surface of the perforation, and the image sensor is mounted at the top and the bottom of the same vertical plane in the perforation. Borehole viewer system, characterized in that to acquire a cross-sectional image located at the same time. The method of claim 10, wherein the camera interface board,
A data sorter for classifying borehole front and side image data obtained from the front and side cameras;
A data memory for storing the classified data;
A main processor for processing the classified data; And
Ethernet driver for transmitting the image data acquired from the front and side cameras respectively by TCP / IP based Ethernet method
Borehole viewer system comprising a. The method of claim 10,
The front camera and the side camera is a borehole viewer system, characterized in that to obtain a borehole image using a CMOS digital image sensor having a 2MB to 5MB pixel, respectively. The method of claim 10,
And the front and side cameras automatically adjust focus in response to a change in diameter of the perforations using an auto focusing lens.

Images