CN107829724A - The earth formation three-dimensional imaging structure device and method of drilling digital virtual core - Google Patents

Abstract

The invention relates to a three-dimensional imaging construction equipment for the formation structure of the digital virtual rock core for drilling. Its probe depth counting pulley is installed on the lifting wire frame, the output shaft of the motor drives the take-up and take-off reel to rotate, and one end of the cable is connected to the take-up and take-off The cable transfer node of the cable reel, the signal input end of the drilling imaging trajectory measurement probe of the on-site imaging host is electrically connected to one end of the cable through the cable transfer node of the take-up and pay-off reel, and the cable is wound on the take-up and pay-off reel and controlled by the take-up and pay-off reel The cable is retracted and released on the depth counting pulley, and the length of the cable is recorded. The output end of the depth counting pulley is connected to the depth feedback signal input end of the on-site imaging host, and the motor control signal output end of the on-site imaging host Connect the input end of the motor, and connect the signal output end of the borehole imaging track measurement probe to the other end of the cable. The invention can automatically generate drilling video images, drilling digital virtual rock core two-dimensional images and drilling three-dimensional track diagrams in real time.

Description

Equipment and method for constructing three-dimensional imaging of stratum structure in digital virtual core of drilling

technical field

The invention relates to the technical field of geotechnical engineering investigation and construction, in particular to a three-dimensional imaging construction device and method for stratum structure of a digital virtual rock core for drilling.

Background technique

The Ministry of Construction advocated accelerating the transformation of traditional industries with high-tech and advanced applicable technologies in "Engineering Survey Technology Progress and Technical Policy Points (Jian Zhi Han [2003] No. 202 Document)", and focused on promoting high-definition digital panoramic borehole imaging Application of the system in hydrological and geological survey work.

The Ministry of Land and Resources decided to carry out the registration of geological exploration qualifications nationwide in the "Notice on the Registration of Geological Exploration Qualifications" in the "Document No. [2005] No. equipment. According to the spirit of the document, grade A qualifications and grade B qualifications of hydrogeology, engineering geology, environmental geological survey, liquid mineral exploration and geophysical exploration must be equipped with drilling TV equipment to improve the technical level of geological exploration and the accuracy of results data. Degree of digitization and visualization.

Most of the traditional borehole TVs are borehole videos, which cannot generate digital virtual borehole core maps, nor can they measure the stratum structure of boreholes. Exploration technical requirements. Driven by the development of electronic and computer technology, some borehole TV imagers that can generate two-dimensional core images of boreholes have been developed, which meet the requirements of some geological exploration and can measure and map some stratum structures. However, in some borehole exploration, the borehole is often prone to deviate, and the trajectory of the borehole changes, which makes the geological structure measurement often appear different from the actual one.

references:

[1] Ministry of Construction in "Engineering Survey Technology Progress and Technical Policy Key Points (Jian Zhi Han [2003] No. 202 Document)"

[2] The Ministry of Land and Resources published the "Notice on Carrying out the Registration of Geological Exploration Qualifications" in "Document No. [2005] No. 41 issued by the Department of Land and Resources

Contents of the invention

The object of the present invention is to provide a kind of stratum structure three-dimensional imaging construction equipment and method of digital virtual rock core of borehole, the present invention abandons the existing video acquisition card, controller, notebook computer and probe combination system structure model and section manual Editing mode, adopting advanced image acquisition and processing technology and three-dimensional measurement and sensing technology of drilling trajectory, the system is highly integrated, and the probe panoramic camera can automatically generate drilling video images, digital virtual core 2D images and drilling images in real time. Three-dimensional trajectory map, the image is clear and realistic, and the azimuth, inclination and depth are automatically and accurately calibrated. It is suitable for all omnidirectional and full-inclination drilling holes for full-cylindrical observation and imaging (vertical holes\horizontal holes\inclined holes\depression and elevation holes). And all boreholes in the exploration area can be used for three-dimensional regional formation structure imaging.

In order to solve the above-mentioned technical problems, the present invention discloses a three-dimensional imaging construction equipment for digital virtual rock cores of boreholes. Depth counting pulley, motor, take-up and pay-off reel, the probe depth counting pulley is installed on the lifting wire frame, the output shaft of the motor is used to drive the take-up and pay-off reel to rotate, and one end of the cable is connected to the cable transfer node of the take-up and pay-off reel , the signal input end of the on-site imaging host's borehole imaging trajectory measurement probe is electrically connected to one end of the cable through the cable transfer node of the take-up and pay-off reel, and the cable is wound on the take-up and pay-off reel, and the take-up and take-off reel controls the take-up and take-off line, the said The cable is retracted and unwound on the depth counting pulley, and the depth counting pulley records the length of the retracting and unwinding line of the cable. The depth feedback signal output end of the depth counting pulley is connected to the depth feedback signal input end of the on-site imaging host, and the motor of the on-site imaging host The control signal output end is connected to the control signal input end of the motor, and the borehole imaging trajectory measurement probe is placed coaxially with the borehole, and the borehole imaging trajectory measurement probe includes a camera and a three-dimensional attitude sensor. The signal output end is connected to the other end of the cable, the camera is used to obtain the imaging data of the rock formation in the borehole, and the three-dimensional attitude sensor is used to obtain the trajectory data of the borehole imaging trajectory measurement probe running in the borehole.

A method for constructing stratum structure three-dimensional imaging of the digital virtual rock core of a borehole utilizing the above-mentioned device is characterized in that it comprises the following steps:

Step 1: Place the lifting wire frame in the hole area of the drilled hole, install the depth counting pulley on the lifting wire frame, and place the cable on the depth counting pulley;

Step 2: Operate the on-site imaging host to control the motor so that the borehole imaging trajectory measurement probe is lowered to the bottom of the hole at a constant speed in the borehole. During the process of lowering the borehole imaging trajectory measurement probe, the camera detects the imaging data of the rock formation in the borehole in real time, and the three-dimensional attitude sensor Obtain the trajectory data of the borehole imaging trajectory measurement probe running in the borehole in real time, and transmit the imaging data of the rock formation in the borehole and the trajectory data of the borehole imaging trajectory measurement probe running in the borehole to the on-site imaging host through the cable, and at the same time The probe depth counting pulley transmits the depth data of the borehole imaging trajectory measurement probe in the borehole to the on-site imaging host. Matching in time, and generating a two-dimensional overall image of the digital virtual core, the two-dimensional overall image of the digital virtual core includes a two-dimensional image of the digital virtual core at each depth position from the hole hole to the bottom of the hole;

The on-site imaging host matches the trajectory data of the borehole imaging trajectory measurement probe running in the borehole with the depth data of the borehole imaging trajectory measurement probe in the borehole, and generates a borehole trajectory map;

Step 3: The on-site imaging host transmits the two-dimensional overall image of the digital virtual core and the drilling trajectory map to the computer, and the computer generates a three-dimensional stratum structure of the digital virtual core of the drilling hole based on the two-dimensional overall image of the digital virtual core and the drilling trajectory map Imaging diagram.

Beneficial effects of the present invention:

The present invention can generate drilling video, drilling digital virtual core two-dimensional images and drilling track diagrams in real time, and is suitable for all omni-directional and full-inclination drilling holes for full-cylindrical observation and imaging (vertical holes\horizontal holes\oblique holes) \depression, elevation hole); combined with the three-dimensional coordinate data of the borehole hole and the three-dimensional imaging data of the digital virtual core of the drill hole, it can generate the three-dimensional imaging of the stratum structure of the digital virtual core of the drill hole for regional exploration and multi-drilling, Comprehensive analysis of the regional stratum structure can be carried out on all borehole image data in the region, improving the technical level of geological exploration and the digitization and visualization of the result data.

Description of drawings

Fig. 1 is the structural representation under the use state of the present invention;

Fig. 2 is a functional block diagram of the electric control part of the present invention.

Among them, 1—on-site imaging host, 2—lifting wire frame. 3—Borehole imaging trajectory measurement probe, 3.1—Camera, 3.2—Three-dimensional attitude sensor, 3.3—Light source, 4—Cable, 5—Probe depth counting pulley, 6—Rock formation, 7—Motor, 8—Drilling hole, 9—Receiving Pay-off reel, 9.1—cable transfer node.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

A three-dimensional imaging construction device for stratum structure of a digital virtual rock core in a borehole of the present invention, which includes an on-site imaging host 1, a lifting wire frame 2, a borehole imaging trajectory measurement probe 3, a cable 4, a probe depth counting pulley 5, and a motor 7 , Take-up and pay-off reel 9, the probe depth counting pulley 5 is installed on the lifting wire frame 2, the output shaft of motor 7 is used to drive the take-up and pay-off reel 9 to rotate, and one end of the cable 4 is connected to the cable of the take-up and pay-off reel 9 Turn node 9.1, the signal input end of the borehole imaging trajectory measurement probe of the on-site imaging host 1 is electrically connected to one end of the cable 4 through the cable transfer node 9.1 of the take-up and pay-off reel 9, and the cable 4 is wound on the take-up and pay-off reel 9 to be retracted and released The cable reel 9 controls the take-up and release line, and the cable 4 is retracted on the depth counting pulley 5, and the depth counting pulley 5 records the length of the take-up and take-off line of the cable 4, and the depth feedback signal output terminal of the depth counting pulley 5 is connected to The depth feedback signal input end of the on-site imaging host 1, the motor control signal output end of the on-site imaging host 1 is connected to the control signal input end of the motor 7, and the borehole imaging track measurement probe 3 is placed coaxially with the borehole 8 (i.e. the probe 3 Located in the middle of the borehole 8, so as to ensure that the image of the borehole wall of the probe 3 is symmetrical and uniform, and there is no deviation when explaining the measurement), the borehole imaging trajectory measurement probe 3 includes a camera 3.1 and a three-dimensional attitude sensor 3.2. The signal output end of the camera 3.1 and the three-dimensional attitude sensor 3.2 is connected to the other end of the cable 4, the camera 3.1 is used to obtain the imaging data of the rock formation 6 in the borehole 8, and the three-dimensional attitude sensor 3.2 is used to obtain the imaging data of the borehole imaging trajectory measurement probe 3 in the Trajectory data run in borehole 8.

The above-mentioned design structure is simple, and it is convenient to construct the three-dimensional imaging of the formation structure of borehole 8.

In the above technical solution, the depth counting pulley 5 is used to guide the signal cable 4 and record the retractable length of the signal cable 4 .

In the above technical solution, the three-dimensional attitude sensor 3.2 is further provided with a light source 3.3. The light source 3.3 is used to illuminate the borehole 8, so that the camera 3.1 can obtain clear image data.

In the above technical solution, the lifting frame 2 is erected at the opening area of the borehole 8 .

In the above technical solution, the camera 3.1 is a panoramic camera.

A method for constructing stratum structure three-dimensional imaging of the digital virtual rock core of a borehole utilizing the above-mentioned device is characterized in that it comprises the following steps:

Step 1: Place the lifting wire frame 2 in the opening area of the drill hole 8, install the depth counting pulley 5 on the lifting wire frame 2, and place the cable 4 on the depth counting pulley 5;

Step 2: Operate the on-site imaging host 1 to control the motor 7 so that the borehole imaging trajectory measurement probe 3 is lowered to the bottom of the hole at a constant speed in the borehole 8, and the camera 3.1 detects the rock formation in the borehole 8 in real time during the lowering process of the borehole imaging trajectory measurement probe 3 6 imaging data, the three-dimensional attitude sensor 3.2 obtains the trajectory data of the borehole imaging trajectory measurement probe 3 running in the borehole 8 in real time, and combines the imaging data of the rock formation 6 in the borehole 8 with the borehole imaging trajectory measurement probe 3 in the borehole The trajectory data running in 8 is transmitted to the on-site imaging host 1 through the cable 4, and the probe depth counting pulley 5 transmits the depth data of the borehole imaging trajectory measurement probe 3 in the borehole 8 to the on-site imaging host 1, and the on-site imaging host 1 will The imaging data of the rock formation 6 in the borehole 8 and the depth data of the borehole imaging trajectory measurement probe 3 in the borehole 8 are matched in time, and a two-dimensional overall image of a digital virtual core is generated, and the two-dimensional overall image of the digital virtual core is The image contains the two-dimensional image of the digital virtual core at each depth from the hole 8 to the bottom of the hole;

The on-site imaging host 1 matches the trajectory data of the borehole imaging trajectory measurement probe 3 running in the borehole 8 with the depth data of the borehole imaging trajectory measurement probe 3 in the borehole 8, and generates a trajectory map of the borehole 8 ;

Step 3: On-site imaging host 1 transmits the digital virtual core two-dimensional overall image and the drilling trajectory map to the computer, and the computer generates the drilling digital virtual core according to the digital virtual core two-dimensional overall image and the drilling trajectory map 3D imaging map of stratigraphic structure;

Step 4: In the computer, the three-dimensional coordinate data of the borehole 8 and the three-dimensional imaging map of the digital virtual core of the borehole 8 are data fused, and the three-dimensional stratum structure of the digital virtual core of the drill hole for regional exploration is generated. imaging.

In step 2 of the above technical solution, the on-site imaging host 1 is operated to control the motor 7 so that the borehole imaging trajectory measurement probe 3 is lowered to the bottom of the borehole 8 at a constant speed along the axial direction of the borehole 8 .

The invention constructs the three-dimensional imaging of the formation structure of the digital virtual rock core of the borehole, and improves the technical level of geological exploration and the digitalization and visualization degree of the result data.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (7)

1. a stratum structure three-dimensional imaging construction equipment of digital virtual rock core for drilling, is characterized in that: it comprises on-the-spot imaging main frame (1), lifting wire frame (2), borehole imaging trajectory measuring probe (3), cable ( 4), probe depth counting pulley (5), motor (7), take-up and pay-off reel (9), the probe depth counting pulley (5) is installed on the lifting wire frame (2), the output shaft of the motor (7) Used to drive the take-up and pay-off reel (9) to rotate, one end of the cable (4) is connected to the cable transfer node (9.1) of the take-up and pay-off reel (9), and the signal input of the drilling imaging trajectory measurement probe of the on-site imaging host (1) The end is electrically connected to one end of the cable (4) through the cable transfer node (9.1) of the take-up and pay-off reel (9), and the cable (4) is wound on the take-up and pay-off reel (9) and is controlled by the take-up and pay-off reel (9). Paying off, the cable (4) is retracted on the depth counting pulley (5), and the depth counting pulley (5) records the length of the cable (4). The depth of the depth counting pulley (5) The feedback signal output end is connected to the depth feedback signal input end of the on-site imaging host (1), the motor control signal output end of the on-site imaging host (1) is connected to the control signal input end of the motor (7), and the borehole imaging track measurement probe ( 3) placed coaxially with the borehole (8), the borehole imaging trajectory measurement probe (3) includes a camera (3.1) and a three-dimensional attitude sensor (3.2), the camera (3.1) and the three-dimensional attitude sensor (3.2) The signal output end is connected to the other end of the cable (4), the camera (3.1) is used to obtain the imaging data of the rock formation (6) in the borehole (8), and the three-dimensional attitude sensor (3.2) is used to obtain the borehole imaging trajectory measurement probe (3) Trajectory data run in the borehole (8). 2. The stratum structure three-dimensional imaging construction equipment of digital virtual rock core for drilling according to claim 1, characterized in that: said three-dimensional attitude sensor (3.2) is also provided with a light source (3.3). 3. The stratum structure three-dimensional imaging construction equipment of digital virtual rock core for drilling according to claim 1, characterized in that: the lifting wire frame (2) is erected in the orifice area of the drilling hole (8). 4. The stratum structure three-dimensional imaging construction device for drilling digital virtual rock core according to claim 1, characterized in that: the camera (3.1) is a panoramic camera. 5. a stratum structure three-dimensional imaging construction method utilizing the drilling digital virtual rock core of the device according to claim 1, is characterized in that, it comprises the steps: Step 1: Place the lifting wire frame (2) in the opening area of the drill hole (8), install the depth counting pulley (5) on the lifting wire frame (2), and place the cable (4) on the depth counting pulley (5 )superior; Step 2: Operate the on-site imaging host (1) to control the motor (7) so that the borehole imaging trajectory measurement probe (3) is lowered to the bottom of the hole at a constant speed in the borehole (8), and the process of lowering the borehole imaging trajectory measurement probe (3) The middle camera (3.1) detects the imaging data of the rock formation (6) in the borehole (8) in real time, and the three-dimensional attitude sensor (3.2) obtains the trajectory data of the borehole imaging trajectory measurement probe (3) running in the borehole (8) in real time, And the imaging data of the rock formation (6) in the borehole (8) and the trajectory data of the borehole imaging trajectory measurement probe (3) running in the borehole (8) are transmitted to the on-site imaging host computer (1) through the cable (4), At the same time, the probe depth counting pulley (5) transmits the depth data of the borehole imaging trajectory measurement probe (3) in the borehole (8) to the on-site imaging host (1), and the on-site imaging host (1) transmits the depth data in the borehole (8) to the on-site imaging host (1). The imaging data of the rock formation (6) and the depth data of the borehole imaging trajectory measurement probe (3) in the borehole (8) are matched in time, and a two-dimensional overall image of a digital virtual rock core is generated. The three-dimensional overall image includes the digital virtual rock core two-dimensional image of each depth position from the borehole (8) aperture to the bottom of the hole; The on-site imaging host (1) performs time-wise comparison of the trajectory data of the borehole imaging trajectory measurement probe (3) running in the borehole (8) and the depth data of the borehole imaging trajectory measurement probe (3) in the borehole (8). Matching, and generate drilling (8) trajectory map; Step 3: The on-site imaging host (1) transmits the digital virtual core two-dimensional overall image and the borehole (8) trajectory map to the computer, and the computer generates the drill hole according to the digital virtual core two-dimensional overall image and the borehole (8) trajectory map The three-dimensional imaging map of the formation structure of the digital virtual core of hole (8). 6. The stratum structure three-dimensional imaging construction method of the digital virtual rock core of the borehole according to claim 5, is characterized in that: after the step 3, also includes step 4: in the computer, the three-dimensional coordinates of the borehole (8) aperture The data is fused with the three-dimensional imaging map of the stratum structure of the digital virtual core of the borehole (8), and the three-dimensional imaging of the stratum structure of the digital virtual core of the drill hole for regional exploration is generated. 7. The stratum structure three-dimensional imaging construction method of the digital virtual rock core of the borehole according to claim 5, characterized in that: in the step 2, the on-site imaging host computer (1) is operated to control the motor (7) to make the borehole imaging trajectory The measuring probe (3) is lowered to the bottom of the hole at a constant speed along the axial direction of the borehole (8) in the borehole (8).