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CN-121985095-A - In-hole camera device and method for ultra-deep drilling

CN121985095ACN 121985095 ACN121985095 ACN 121985095ACN-121985095-A

Abstract

The invention discloses an in-hole camera shooting device and method for ultra-deep drilling, comprising an orientation screw drilling tool and a central cable drill rod which are axially connected in the front-back direction, wherein an arc-surface glass cover is coaxially sleeved at the rear tail part of the orientation screw drilling tool, the arc-surface glass cover is a semicircular shell, a through hole is formed in the center of the shell, the orientation screw drilling tool and the central cable drill rod coaxially penetrate through the through hole, the arc-surface glass cover is tightly attached to the orientation screw drilling tool and the central cable drill rod to form a closed space with the rear tail end of the orientation screw drilling tool, a plurality of cameras and a plurality of lamp beads are arranged in the closed space and on the wall surface at the rear end of the orientation screw drilling tool, the cameras are circumferentially arranged around the orientation screw drilling tool at intervals, and the lamp beads are located at the outer sides of the cameras and circumferentially arranged around the orientation screw drilling tool at intervals. The camera shooting device is used for shooting surrounding rock conditions of the target position at any time, and has small influence on normal drilling operation.

Inventors

  • WANG GUOAN
  • SUN FEIXIANG
  • ZHAI QIANZHI
  • JIN WENJIE
  • ZHU ANMIN
  • LIU RUIQING
  • LI YUNPENG
  • LIU SHANYI
  • GUO YONGJIE
  • WANG SHEN
  • ZENG QIANG
  • WANG YUE
  • XIE TAO
  • ZHOU SONG
  • HU BIFEI
  • WANG YANBO
  • YANG JUNHUA
  • DOU XIAOTIAN
  • FENG CUNZHI
  • GAO PAN

Assignees

  • 中铁隧道局集团有限公司

Dates

Publication Date
20260505
Application Date
20260123

Claims (7)

  1. 1. An in-hole camera device for ultra-deep drilling is characterized by comprising a directional screw drilling tool (4) and a central cable drill rod (2) which are axially connected in front-back direction; a cambered surface glass cover (3-1) is coaxially sleeved at the rear tail part of the directional screw drilling tool (4), the cambered surface glass cover (3-1) is a semicircular shell, a through hole is formed in the center of the shell, the cambered surface side of the semicircular shell faces towards the rear end, and the open end faces towards the front end; The directional screw drilling tool (4) and the central cable drill rod (2) coaxially penetrate through the through hole, the cambered surface glass cover (3-1) is tightly attached to the directional screw drilling tool (4) and the central cable drill rod (2), and a closed space is formed between the cambered surface glass cover and the rear tail end of the directional screw drilling tool (4); the LED lamp comprises a closed space, wherein a plurality of cameras and a plurality of lamp beads are arranged in the closed space and positioned on the wall surface of the rear end of the directional screw drilling tool (4), the cameras are arranged around the directional screw drilling tool (4) at intervals, the lamp beads are positioned on the outer sides of the cameras and are arranged around the directional screw drilling tool (4) at intervals, and a ring array lamp bead (3-2) is formed.
  2. 2. An in-hole imaging device for ultra-deep drilling as claimed in claim 1, wherein an annular boss (3-3) is provided between the plurality of cameras and the wall surface at the rear end of the directional screw drill (4), and the outer diameter of the annular boss (3-3) is smaller than the outer diameter of the directional screw drill (4).
  3. 3. The in-hole camera device for ultra-deep drilling as claimed in claim 2, wherein the rear tail part of the middle directional screw drilling tool (4) is flush with the edge of the open end of the cambered surface glass cover (3-1), the outer wall is in fit connection with the edge of the open end, and the outer wall of the center cable penetrating drill rod (2) is in tight fit connection with the side wall of the through hole.
  4. 4. An in-hole imaging apparatus for ultra-deep drilling as defined in claim 3, wherein the imaging end of each of said cameras is inclined toward the rear end and toward the outside borehole wall.
  5. 5. The in-hole camera device for ultra-deep drilling according to claim 4, wherein each camera and each lamp bead are connected with a camera control panel (8) arranged outside the drilling, the camera control panel (8) comprises a functional operation keyboard (8-1), a first screen (8-31), a second screen (8-32) and a third screen (8-33), and the first screen (8-31), the second screen (8-32) and the third screen (8-33) respectively correspond to and display images of the first camera (3-31), the second camera (3-32) and the third camera (3-33); The first screen (8-31), the second screen (8-32) and the third screen (8-33) are all fan-shaped and are sequentially arranged in the annular direction to form a complete annular screen, and the complete annular screen is used for displaying a figure of one circle in a drilled hole in the annular direction.
  6. 6. An imaging method of an in-hole imaging device for ultra-deep drilling according to any one of claims 1 to 5, comprising the steps of: Taking a shadow by single-point shooting: Step 1.1, stopping pushing the central cable drill rod (2), continuously injecting drilling fluid (6) at the same time, and discharging Kong Zha rock fragments in the hole backwards until slag discharge is finished, and stopping injecting the drilling fluid (6); Injecting a set volume of camera shooting liquid (7) into the pushing center cable drilling rod (2), then injecting drilling liquid (6), enabling the camera shooting liquid (7) to flow out of a drill bit (5) into the hole, and further continuously pushing the drilling liquid (6) until the camera shooting liquid (7) is positioned in the hole in the field of view of the first camera (3-31); Step 1.2, stopping injecting drilling fluid (6), temporarily closing the orifice, stopping flowing of the transparent camera fluid (7) in the range section of the first camera (3-31) in the hole, and fixing the transparent camera fluid at the range section of the first camera (3-31); And 1.3, opening a second camera (3-32) and a third camera (3-33), and displaying the shot images on a first screen (8-31), a second screen (8-32) and a third screen (8-33) correspondingly to obtain surrounding rock images of the circumferential periphery in the complete display hole.
  7. 7. An imaging method of an in-hole imaging device for ultra-deep drilling according to any one of claims 1 to 5, comprising the steps of: Taking a shadow by section shooting: step 2.1, stopping pushing the central cable drill rod (2), continuously injecting drilling fluid (6) at the same time, and discharging Kong Zha rock fragments in the hole backwards until slag discharge is finished, stopping injecting the drilling fluid (6), and simultaneously opening the ring array lamp beads (3-2) and the first cameras (3-31); Injecting a set volume of camera shooting liquid (7) into the pushing center cable-passing drill rod (2), then injecting drilling liquid (6), enabling the camera shooting liquid (7) to flow out of a drill bit (5) into an hole, and further continuously pushing the drilling liquid (6) until the camera shooting liquid (7) is positioned in the hole in the field of view of the first camera (3-31); Step 1.2, stopping injecting drilling fluid (6), temporarily sealing the hole opening, stopping flowing of the transparent camera fluid (7) in the range section of the first camera (3-31) in the hole, fixing part of the camera fluid (7) at the range section of the first camera (3-31), and filling the front end of the drilling hole with the other part of the camera fluid (7) and pushing the inner rear section of the center cable drill rod (2); Step 2.3, opening a camera II (3-32) and a camera III (3-33), and displaying the shot images on a screen I (8-31), a screen II (8-32) and a screen III (8-33) corresponding to the shot images to obtain surrounding rock images of the circumferential periphery in the complete display hole; And 2.4, pulling the central cable-through drill rod (2) backwards, and continuously collecting surrounding rock images or videos backwards.

Description

In-hole camera device and method for ultra-deep drilling Technical Field The invention belongs to the technical field of tunnel engineering construction, and particularly relates to an in-hole camera device and method for ultra-deep drilling. Background The requirement of the long and deep buried tunnel on accurate detection of tunnel geology is higher, so that the ultra-deep directional drilling technology of petroleum and coal mines is introduced in tunnel engineering, the technology can realize kilometer-level directional drilling, but for geological condition investigation in the drilling process, judgment and analysis can be carried out only through drilling fluid, and the time required by returning hole slag and rock debris of a target point position to an orifice is influenced by complex factors such as the flow rate, carrying capacity, flow distance, flow path and the like of the drilling fluid, so that judgment errors are larger. By adopting the traditional in-hole shooting technology, a kilometer-level drill rod drilling tool needs to be sequentially lifted out for drilling, then a clear water hole is washed, and the hole is put into a conventional in-hole imager, so that the time is long, the cost is high, and the risk of hole collapse is also caused. Disclosure of Invention The invention aims to provide an in-hole imaging device and method for ultra-deep drilling, which can be used for imaging surrounding rock conditions of a target position at any time, and has small influence on normal drilling operation and no need of drill withdrawal. The invention adopts the following technical scheme that the in-hole camera device for ultra-deep drilling comprises a directional screw drilling tool and a central cable drill rod which are axially connected in front and back; the rear tail part of the directional screw drilling tool is coaxially sleeved with a cambered surface glass cover, the cambered surface glass cover is a semicircular shell, a through hole is formed in the center of the shell, the cambered surface side of the semicircular shell faces the rear end, and the open end faces the front end; the directional screw drilling tool and the central cable drill rod coaxially penetrate through the through hole, the cambered surface glass cover is tightly attached to the directional screw drilling tool and the central cable drill rod, and a closed space is formed between the cambered surface glass cover and the rear tail end of the directional screw drilling tool; The device comprises a closed space, a plurality of cameras and a plurality of lamp beads, wherein the cameras and the lamp beads are arranged on the wall surface, which is positioned at the rear end of the directional screw drilling tool, in the closed space, the cameras are arranged around the directional screw drilling tool at intervals, the lamp beads are positioned at the outer sides of the cameras and are arranged around the directional screw drilling tool at intervals, and the lamp beads are formed into a ring array. Further, an annular boss is arranged between the cameras and the wall surface of the rear end of the directional screw drilling tool, and the outer diameter of the annular boss is smaller than that of the directional screw drilling tool. Further, the rear tail part of the middle directional screw drilling tool is flush with the edge of the open end of the cambered surface glass cover, the outer wall of the middle directional screw drilling tool is in fit connection with the edge of the open end, and the outer wall of the center cable-through drill rod is in close fit connection with the side wall of the through hole. Further, the imaging end of each camera is inclined towards the rear end and towards the outer borehole wall. Further, each camera and each lamp bead are connected with a camera control panel (8) arranged outside the drilling hole, each camera control panel comprises a function operation keyboard, a first screen, a second screen and a third screen, and the first screen, the second screen and the third screen respectively correspond to and display images of the first camera, the second camera and the third camera; The first screen, the second screen and the third screen are all fan-shaped and are sequentially distributed in the annular direction to form a complete annular screen, and the complete annular screen is used for displaying a figure of one circle in a drilled hole in the annular direction. The invention also discloses an imaging method of the in-hole imaging device for ultra-deep drilling, which comprises the following steps: Taking a shadow by single-point shooting: Step 1.1, stopping pushing the central cable drill rod, continuously injecting drilling fluid, and discharging Kong Zha rock fragments in the hole backwards until slag discharge is finished, and stopping injecting the drilling fluid; Injecting a set volume of camera fluid into the pushing center cable-passing drill rod, then injecting dril