Drilling while drilling imaging detection method and device

Abstract

The invention discloses a while-drilling hole imaging detection method and device, and belongs to the technical field of geophysical image detection.The while-drilling hole imaging detection device comprises a front detector probe rod and a rear-end drill rod in threaded connection with the front detector probe rod, the front detector probe rod comprises a first outer sleeve and a first inner drill rod arranged in the first outer sleeve, and the first inner drill rod is in threaded connection with the rear-end drill rod; a camera is arranged in one inner drill rod, and an electronic plate is arranged on one side of the camera. The rear end drill rod comprises a second outer sleeve and a second inner drill rod arranged in the second outer sleeve. According to the imaging detection method and device for drilling while drilling, in the drilling process, the imaging detection method and device can be installed on a drill bit to conduct imaging detection for drilling while drilling, the detection cost is greatly reduced, and the underground operation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of geophysical image detection, and in particular to a method and device for while-drilling borehole imaging detection. Background Art

[0002] Tunnel support is a key technology for safe coal mining, and roof accidents account for a considerable proportion of mine disasters. The main cause of roof accidents is that the rock characteristics of the local roof have not been explored in time, resulting in insufficient support strength. Therefore, during tunnel construction, it is necessary to promptly explore the rock characteristics of the tunnel roof, and promptly change the support method or adjust the support parameters in areas with potential roof collapse risks to ensure the safety and stability of the roof.

[0003] At present, the main methods for detecting the rock characteristics of the local roof of the tunnel include core sampling, borehole wall impression method, borehole wall observation method and geological radar detection. The core sampling method is to use a geological core drill to take the core of the roof, and analyze the rock characteristics of the roof based on the columnar structure of the core. However, the geological drill is large in size and is not suitable for use on the excavation working face. It cannot be used anytime and anywhere with the excavation of the tunnel boring machine; the borehole wall impression method uses some non-flowable and elastic plastic materials to fit on the surface of the borehole, and copies the internal contour of the borehole to be measured into a mold, and then measures the impression to evaluate the internal structure of the borehole to be measured, but it cannot determine the rock characteristics of the roof and cannot provide scientific and effective data for the design of the support method; the borehole wall impression method is to use some non-flowable and elastic plastic materials to fit on the surface of the borehole, and then measure the impression to evaluate the internal structure of the borehole to be measured. However, it cannot determine the rock characteristics of the roof and cannot provide scientific and effective data for the design of the support method; the borehole wall observation method is to use some non-flowable and non-elastic plastic materials to fit on the surface of the borehole, and then measure the impression to evaluate the internal structure of the borehole to be measured. The observation method is to use equipment such as rock detection recorders to directly photograph the scenes inside the borehole through a probe. This method can directly observe the cracks and joints in the hole wall and obtain clearer roof information. Summary of the invention

[0004] The purpose of the present invention is to provide a method and device for detecting borehole imaging while drilling to solve the problems existing in the background technology.

[0005] To achieve the above object, the present invention provides a drilling imaging detection device while drilling, comprising: The front detector probe rod comprises a first outer sleeve and a first inner drill rod arranged inside the first outer sleeve, a camera is arranged inside the inner drill rod, and an electronic board is arranged on one side of the camera; A rear end drill rod, comprising a second outer sleeve and a second inner drill rod arranged inside the second outer sleeve; The front detector probe rod and the rear end drill rod are threadedly connected.

[0006] Preferably, a water hole is provided in the center of the first inner drill rod and the second inner drill rod, and one end of the first inner drill rod and the second inner drill rod are provided with an external thread, and the end away from the external thread is provided with an internal thread.

[0007] Preferably, the first outer sleeve and the second outer sleeve are both integrally formed of a cylinder and a hexagonal structure, and wiring holes are provided at the central symmetrical edges of the hexagonal structure, and the wiring holes pass through the first outer sleeve and the second outer sleeve.

[0008] Preferably, three cameras are provided, and the first outer sleeve is provided with grooves matching the cameras.

[0009] Preferably, the electronic board is arranged near the internal thread, and a cover plate is arranged on one side of the electronic board.

[0010] Preferably, a control host is also included, and the control host includes an image processing module, a communication module, a storage module and a display module.

[0011] A borehole imaging detection method while drilling, the steps are as follows: S1, connecting a drill bit to the external thread of the first inner drill rod, connecting the internal thread of the second inner drill rod to the drilling rig platform and the control host; S2, connect the camera to the communication cable through the wiring holes on the first outer sleeve and the second outer sleeve, connect the end of the communication cable to the control host, and start drilling; S3. After the drilling task is completed, the borehole is cleaned through the water hole; S4, control the camera to start and retract the drill pipe through the control host; S5. The internal image of the borehole captured by the camera is stored through the storage module, and then displayed on the control host through the display module.

[0012] Therefore, the present invention adopts the above-mentioned method and device for borehole imaging detection while drilling, which can be installed on the drill bit during the drilling process to perform borehole imaging detection while drilling, thereby greatly reducing the detection cost and improving the downhole operation efficiency.

[0013] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of a drilling imaging detection device while drilling according to the present invention; Figure 2 It is a schematic structural diagram of a first inner drill rod and a second inner drill rod of a drilling imaging detection device while drilling according to the present invention; Figure 3It is a schematic diagram of the internal structure of a first inner drill rod of a drilling imaging detection device while drilling according to the present invention; Figure 4 It is a schematic diagram of the structure of the external thread of a drilling imaging detection device while drilling according to the present invention; Figure 5 It is a schematic diagram of the structure of the internal thread of a drilling imaging detection device while drilling according to the present invention; Reference numerals 1. First outer sleeve; 2. First inner drill rod; 3. Camera; 4. Electronic board; 5. Second outer sleeve; 6. Second inner drill rod; 7. Water hole; 8. External thread; 9. Internal thread; 10. Wiring hole; 11. Groove; 12. Cover plate. DETAILED DESCRIPTION

[0015] The following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-Figure 5 , a drilling imaging detection device while drilling, comprising: The front detector probe includes a first outer sleeve 1 and a first inner drill rod 2 arranged inside the first outer sleeve 1. A camera 3 is arranged inside the inner drill rod, and an electronic board 4 is arranged on one side of the camera 3. Three cameras 3 are arranged, and a groove 11 matching the camera 3 is arranged on the first outer sleeve 1. The camera 3 is connected to the control host through a communication cable, and can receive the control of the control host to perform imaging and return data. The overall drilling probe housing is made of non-magnetic metal.

[0017] The electronic board 4 is arranged near the internal thread 9 , and a cover plate 12 is arranged on one side of the electronic board 4 .

[0018] The rear end drill rod comprises a second outer sleeve 5 and a second inner drill rod 6 arranged inside the second outer sleeve 5 .

[0019] The first inner drill rod 2 and the second inner drill rod 6 are both provided with a water hole 7 in the center, which is convenient for cleaning the drill hole after drilling is completed. The first inner drill rod 2 and the second inner drill rod 6 are both provided with an external thread 8 at one end, and an internal thread 9 at the end away from the external thread 8. The external thread 8 of the first inner drill rod 2 can be connected to a drill bit.

[0020] The first outer sleeve 1 and the second outer sleeve 5 are both formed in one piece with a cylindrical and hexagonal structure, and the hexagonal structure is convenient for placement and clamping. A wiring hole 10 is provided at the central symmetrical edge of the hexagonal structure, and the wiring hole 10 runs through the outer sleeve to facilitate the communication cable connected to the camera 3. The wiring hole 10 is drilled on the wall of the outer sleeve to minimize the damage to the drill rod strength and protect the wires. At the same time, the hexagonal embedded structure is adopted to effectively prevent the sleeve and the drill rod from sliding.

[0021] The front detector rod and the rear end drill rod are threadedly connected.

[0022] The system also includes a control host, which includes an image processing module, a communication module, a storage module and a display module. The system controls the camera 3 and receives images, and then saves the images for real-time display.

[0023] A borehole imaging detection method while drilling, the steps are as follows: S1, connect the drill bit at the external thread 8 of the first inner drill rod 2, connect the second inner drill rod 6 at the internal thread 9, and connect the drilling rig platform and the control host at the internal thread 9 of the second inner drill rod 6; S2, connect the camera 3 to the communication cable through the wiring holes 10 on the first outer sleeve 1 and the second outer sleeve 5, connect the ends of the communication cable to the control host, and start drilling; S3, after the drilling task is completed, the drilled hole is cleaned through the water hole 7; S4, control the camera 3 through the control host to open and recycle the drill pipe, and the situation inside the borehole can be fully observed and images can be taken during the recycle process; S5. The internal image of the borehole captured by the camera 3 is stored through the storage module, and then displayed on the control host through the display module.

[0024] Therefore, the present invention adopts the above-mentioned method and device for drilling imaging detection, which greatly improves the task efficiency of drilling detection in underground excavation or support work.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A drilling imaging detection device, characterized in that: include: The front detector probe rod comprises a first outer sleeve and a first inner drill rod arranged inside the first outer sleeve, a camera is arranged inside the inner drill rod, and an electronic board is arranged on one side of the camera; A rear end drill rod, comprising a second outer sleeve and a second inner drill rod arranged inside the second outer sleeve; The front detector probe rod and the rear end drill rod are threadedly connected.

2. The drilling-while-drilling imaging detection device according to claim 1, characterized in that: A water hole is arranged in the center of the first inner drill rod and the second inner drill rod. One end of the first inner drill rod and the second inner drill rod is provided with an external thread, and the end away from the external thread is provided with an internal thread.

3. The drilling imaging detection device according to claim 1, characterized in that: The first outer sleeve and the second outer sleeve are both formed integrally of a cylinder and a hexagonal structure. A wiring hole is provided at the central symmetrical edge of the hexagonal structure, and the wiring hole runs through the first outer sleeve and the second outer sleeve.

4. The drilling-while-drilling imaging detection device according to claim 3, characterized in that: The number of the cameras is three, and the first outer sleeve is provided with grooves matching the cameras.

5. The drilling-while-drilling imaging detection device according to claim 2, characterized in that: The electronic board is arranged near the internal thread, and a cover plate is arranged on one side of the electronic board.

6. The drilling-while-drilling imaging detection device according to claim 5, characterized in that: It also includes a control host, which includes an image processing module, a communication module, a storage module and a display module.

7. A method for using a drilling imaging detection device as claimed in any one of claims 1 to 6, characterized in that: Here are the steps: S1, connecting a drill bit to the external thread of the first inner drill rod, connecting the internal thread of the second inner drill rod to the drilling rig platform and the control host; S2, connect the camera to the communication cable through the wiring holes on the first outer sleeve and the second outer sleeve, connect the end of the communication cable to the control host, and start drilling; S3. After the drilling task is completed, the borehole is cleaned through the water hole; S4, control the camera to start and retract the drill pipe through the control host; S5. The internal image of the borehole captured by the camera is stored through the storage module, and then displayed on the control host through the display module.

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