A core structural plane detection device and method

Abstract

The present application provides a kind of core structural plane detection device and method, including rack, rotating drive mechanism and for supporting core support mechanism, also include calibration mechanism, the support mechanism rotation is arranged on the rack, the rotating drive mechanism is used to drive the support mechanism rotation, the calibration mechanism has cylindrical calibration surface, the axis of the calibration surface is coaxially arranged with the rotation axis of the support mechanism.The present application can improve the efficiency and accuracy of information collection of core structural plane.

Description

Technical Field

[0001] This invention relates to the field of core testing technology, and in particular to a core structural surface testing device and method. Background Technology

[0002] In geological exploration engineering, drilling equipment is typically used to extract rock cores from below the surface. The cores are then tested and analyzed to accurately understand deep geological structures and determine the morphology and extent of rock masses. This provides crucial guidance for civil engineering construction and mineral extraction. When inspecting the core's structural surfaces after drilling, angle measuring tools such as angle gauges are commonly used. However, this method suffers from significant errors due to the curved outer surface of the core and inconsistent distances between the measuring tools and different locations on the outer surface. Manual observation of the core's structural surface is necessary, and it is inconvenient to collect and inspect information about the overall structural surface of the outer ring of the core.

[0003] To address this, a novel core structure surface detection device and method are proposed to improve the efficiency and accuracy of core structure surface information acquisition. Summary of the Invention

[0004] The purpose of this invention is to provide a core structure surface detection device and method to solve the problems of low efficiency and accuracy in the existing core structure surface information acquisition.

[0005] To solve the above-mentioned technical problems, the present invention provides a core structure surface detection device, including a frame, a rotary drive mechanism, and a support mechanism for supporting the core, and further including a calibration mechanism. The support mechanism is rotatably mounted on the frame, and the rotary drive mechanism is used to drive the support mechanism to rotate. The calibration mechanism has a cylindrical calibration surface, and the axis of the calibration surface is coaxial with the rotation axis of the support mechanism.

[0006] Optionally, it may also include a clamping mechanism for holding the rock core on the outer peripheral surface of the rock core.

[0007] Optionally, a calibration adjustment mechanism may also be included for adjusting the radius and position of the calibration surface.

[0008] Optionally, the calibration adjustment mechanism includes adjustment blocks, the calibration mechanism includes a deformable support and an elastic plate, the elastic plate is connected to the deformable support, the number of adjustment blocks is at least three, the adjustment blocks are located on the same circumference, and the calibration surface is located on the inner circumferential surface of the elastic plate.

[0009] Optionally, the deformable bracket is connected to the elastic plate via a ball joint.

[0010] Optionally, the clamping mechanism includes a clamping block, which is movably connected to the frame. The clamping block rotates around the rotation axis of the support mechanism and moves radially relative to the support mechanism. An adjusting block is disposed on the clamping block and is located further away from the rotation axis of the support mechanism than the clamping block. The elastic plate has a slide for cooperating with the adjusting block.

[0011] Optionally, the clamping mechanism further includes a clamping transmission assembly, a slide block, and at least three slide rods. The slide block is rotatably connected to the frame and rotates along the rotation axis of the support mechanism. The slide block is slidably connected to the slide rods, and the slide rods can slide radially relative to the slide block along the support mechanism. The clamping block is disposed on the slide rods, and the clamping transmission assembly is used to drive the slide rods to slide.

[0012] Optionally, the number of support mechanisms is two, and the two support mechanisms are arranged vertically opposite each other on the frame; the number of clamping mechanisms is two, and the two clamping mechanisms are arranged vertically opposite each other, and the clamping mechanisms can rotate relative to the frame about the rotation axis of the support assembly.

[0013] Optionally, it also includes a clamping drive mechanism for driving the clamping mechanism to clamp the rock core. The clamping drive mechanism includes a clamping drive assembly, a clamping drive transmission assembly, and a clamping drive rod. The clamping drive assembly is used to drive the clamping drive rod to move up and down along the axial direction of the clamping mechanism through the clamping drive transmission assembly. The clamping drive rod is used to drive the clamping mechanism to clamp the rock core, and the clamping drive rod can rotate relative to the rotation axis of the clamping mechanism.

[0014] The present invention also provides a method for detecting the structural surface of a rock core, comprising: establishing a model for extracting information on the structural surface of a borehole rock core; acquiring image information of the structural surface of the rock core using the aforementioned rock core structural surface detection device; and identifying the image information of the structural surface of the rock core using the model for extracting information on the structural surface of the borehole rock core to obtain information on joints, fractures, weathering interfaces, and soil-rock interfaces of the rock core.

[0015] The present invention provides a core structure surface detection device and method, which have the following beneficial effects:

[0016] Because a support mechanism is used to support the rock core, and the support mechanism is rotatably mounted on the frame, and the rotary drive mechanism is used to drive the support mechanism to rotate, the rock core mounted on the support mechanism can be driven to rotate by the rotary drive mechanism. Because the calibration mechanism has a cylindrical calibration surface, and the axis of the calibration surface is coaxial with the rotation axis of the support mechanism, the calibration surface is concentric with the circumferential surface of the rock core mounted on the support mechanism. In this way, when calibrating and measuring the rock core through the calibration mechanism, it is easy to make the distance between different positions on the circumferential surface of the rock core and the measuring tool consistent, thereby facilitating the collection and detection of the overall structural surface information of the circumferential surface of the rock core, and improving the efficiency and accuracy of the information collection of the rock core structural surface. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the core structure surface detection device in Embodiment 1 of the present invention;

[0018] Figure 2 This is a schematic diagram of the support mechanism and clamping mechanism in the core structure surface detection device of Embodiment 1 of the present invention;

[0019] Figure 3 This is a partially enlarged schematic diagram of the core structure surface detection device in Embodiment 1 of the present invention;

[0020] Figure 4 This is a schematic diagram of the calibration mechanism of the core structure surface detection device in Embodiment 1 of the present invention;

[0021] Figure 5 This is a schematic diagram of the adapter rod, support rod, and connecting ball of the calibration mechanism of the core structure surface detection device in Embodiment 1 of the present invention;

[0022] Figure 6 This is a schematic diagram of the elastic plate of the core structure surface detection device in Embodiment 1 of the present invention;

[0023] Figure 7 This is a schematic diagram of the core structure surface detection device in Embodiment 2 of the present invention;

[0024] Figure 8 This is a schematic diagram of the support mechanism and clamping mechanism in the core structure surface detection device of Embodiment 2 of the present invention;

[0025] Figure 9 This is a partially enlarged schematic diagram of the core structure surface detection device in Embodiment 2 of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100 - Rack; 110 - Frame; 120 - Base plate; 130 - Movable plate;

[0028] 200-Calibration mechanism; 210-Deformable bracket; 211-X-direction telescopic component; 2111-First sleeve rod; 2112-First movable rod; 212-Y-direction telescopic component; 2121-Second sleeve rod; 2122-Second movable rod; 2123-Adapter rod; 2124-Support rod; 2125-Connecting ball; 220-Elastic plate; 221-Slide rail;

[0029] 300- Rotary drive mechanism;

[0030] 400 - Support mechanism; 410 - Turntable; 420 - Rotating shaft; 430 - Turntable;

[0031] 500 - Clamping mechanism; 510 - Slider; 520 - Connecting rod; 530 - Slide bar; 540 - Clamping block;

[0032] 600 - Calibration adjustment mechanism; 610 - Adjustment block;

[0033] 700-Clamping drive mechanism; 710-Clamping drive assembly; 711-Screw; 713-Push rod; 714-Rack; 715-Transmission gear; 720-Clamping drive transmission assembly; 730-Clamping drive rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example 1

[0041] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , Figure 1 This is a schematic diagram of the core structure surface detection device in Embodiment 1 of the present invention. Figure 2 This is a schematic diagram of the support mechanism 400 and clamping mechanism 500 in the core structure surface detection device according to Embodiment 1 of the present invention. Figure 3 This is a partially enlarged schematic diagram of the core structure surface detection device in Embodiment 1 of the present invention. Figure 4 This is a schematic diagram of the calibration mechanism 200 of the core structure surface detection device in Embodiment 1 of the present invention. Figure 5 This is a schematic diagram of the adapter rod 2123, support rod 2124, and connecting ball 2125 of the calibration mechanism 200 of the core structure surface detection device in Embodiment 1 of the present invention. Figure 6This is a schematic diagram of the elastic plate 220 of the core structure surface detection device in Embodiment 1 of the present invention. This embodiment provides a core structure surface detection device, including a frame 100, a calibration mechanism 200, a rotary drive mechanism 300, and a support mechanism 400 for supporting the core. The support mechanism 400 is rotatably mounted on the frame 100. The rotary drive mechanism 300 is used to drive the support mechanism 400 to rotate. The calibration mechanism 200 has a cylindrical calibration surface, and the axis of the calibration surface is coaxial with the rotation axis of the support mechanism 400.

[0042] Since the rock core is supported by a support mechanism 400, which is rotatably mounted on the frame 100, and the rotation drive mechanism 300 is used to drive the support mechanism 400 to rotate, the rock core mounted on the support mechanism 400 can be rotated by the rotation drive mechanism 300. Since the calibration mechanism 200 has a cylindrical calibration surface, and the axis of the calibration surface is coaxial with the rotation axis of the support mechanism 400, the calibration surface is concentric with the circumferential surface of the rock core mounted on the support mechanism 400. In this way, when calibrating and measuring the rock core using the calibration mechanism 200, it is easy to make the distance between different positions on the circumferential surface of the rock core and the measuring tool consistent, thereby facilitating the collection and detection of the overall structural surface information of the circumferential surface of the rock core, and improving the efficiency and accuracy of the information collection of the rock core structural surface.

[0043] refer to Figure 1 and Figure 2 The core structure surface detection device also includes a clamping mechanism 500 for clamping the core on the outer circumferential surface of the core, which can improve the stability of the core structure surface detection device during the detection process.

[0044] The core structure surface detection device also includes a calibration adjustment mechanism 600 for adjusting the radius and position of the calibration surface. This allows the calibration assembly to be used for detecting cores of different sizes.

[0045] For details, please refer to Figure 1 , Figure 4 , Figure 5 and Figure 6 The calibration adjustment mechanism 600 includes adjustment blocks 610, and the calibration mechanism 200 includes a deformation support 210 and an elastic plate 220. The elastic plate 220 is connected to the deformation support 210. There are at least three adjustment blocks 610 located on the same circumference, and the calibration surface is located on the inner circumferential surface of the elastic plate 220. Thus, by changing the position of the adjustment blocks 610, the radius and position of the calibration surface can be changed, thereby adapting to cores of different sizes.

[0046] In this embodiment, the clamping mechanism 500 includes a clamping block 540, which is movably connected to the frame 100. The clamping block 540 rotates around the rotation axis of the support mechanism 400 and moves radially relative to the support mechanism 400. An adjusting block 610 is disposed on the clamping block 540 and is located further away from the rotation axis of the support mechanism 400 than the clamping block 540. The elastic plate 220 has a slide 221 for cooperating with the adjusting block 610. During the clamping process of the clamping mechanism 500 clamping the rock core, the calibration adjustment mechanism 600 simultaneously adjusts the radius and position of the calibration surface of the calibration component so that the axis of the calibration surface is coaxial with the rotation axis of the support mechanism 400. This makes the calibration component suitable for the detection of rock cores of different sizes and improves the accuracy of the detection.

[0047] refer to Figure 1 and Figure 2 The number of support mechanisms 400 is two, and the two support mechanisms 400 are arranged vertically opposite each other on the frame 100. In this way, the rock core can be supported by the support mechanisms 400.

[0048] Specifically, the support mechanism 400 includes a turntable 410, a rotating shaft 420, and a turntable 430 for supporting the rock core. The turntable 410 is rotatably connected to the frame 100, the rotating shaft 420 is connected to the turntable 410, and the turntable 430 is connected to the rotating shaft 420. The rotation axis of the turntable 430 is coaxial with the rotation axis of the turntable 410. Thus, after the turntable 410 rotates, the rotating shaft 420 can drive the turntable 430 to rotate, thereby driving the rock core to rotate.

[0049] refer to Figure 1 and Figure 2 The number of clamping mechanisms 500 is two, and the two clamping mechanisms 500 are arranged opposite each other, and the clamping mechanisms 500 can rotate relative to the frame 100 around the rotation axis of the support assembly.

[0050] The clamping mechanism 500 further includes a clamping transmission assembly, a slide rod 530, and a slide base. The slide base is rotatably connected to the frame 100 and can rotate along the rotation axis of the support mechanism 400. The slide base is slidably connected to the slide rod 530, and the slide rod 530 can slide radially relative to the slide base and the support mechanism 400. The clamping block 540 is disposed on the slide rod 530. The clamping transmission assembly is used to drive the slide rod 530 to slide. When the clamping transmission assembly drives the slide rod 530 to slide radially relative to the slide base and the support mechanism 400, the slide rod 530 drives the clamping block 540 to slide radially relative to the support mechanism 400, thereby clamping and releasing the rock core by the clamping block 540.

[0051] Furthermore, the clamping transmission assembly includes a slider 510, a connecting rod 520, and a clamping shaft. The clamping shaft is mounted on the frame 100. The slider 510 is connected to the clamping shaft. The slider 510 can slide relative to the clamping shaft along the axial direction of the support mechanism 400, and the slider 510 can rotate along the rotation axis of the support mechanism 400. The connecting rod 520 is rotatably connected to both the slider 510 and the slide bar 530. Thus, when the slider 510 is driven to slide along the axial direction of the rotating shaft 420, the connecting rod 520 can drive the slide bar 530 to slide relative to the slide block in a direction perpendicular to the rotation axis of the support mechanism 400. This, in turn, drives the clamping block 540 to slide in a direction perpendicular to the rotation axis of the support mechanism 400, thereby clamping and releasing the rock core through the clamping block 540.

[0052] In this embodiment, the adjustment block 610 is disposed on the slide rod 530 and is located further away from the rotation axis of the support mechanism 400 than the clamping block 540. Thus, when the rock core is clamped by the clamping mechanism 500, the shape and position of the calibration surface of the calibration mechanism 200 can be adjusted by driving the adjustment block 610.

[0053] Preferably, the slide is fixedly connected to the clamping shaft. This simplifies the structure.

[0054] Preferably, the clamping shaft is coaxially arranged with the rotating shaft 420. This simplifies the structure.

[0055] Preferably, the slide block and the turntable 430 are integrally formed. In this way, when the support mechanism 400 rotates, the clamping mechanism 500 also rotates together, which simplifies the structure and allows the clamping mechanism 500 to stably clamp the rock core.

[0056] refer to Figure 4 , Figure 5 and Figure 6The deformable bracket 210 is connected to the elastic plate 220 via a ball joint. This prevents the deformable bracket 210 from affecting the deformation of the elastic plate 220, thereby avoiding any impact on measurement accuracy.

[0057] The deformable support 210 includes an X-axis telescopic member 211, a Y-axis telescopic member 212, and a connecting ball 2125. The X-axis telescopic member 211 is connected to the Y-axis telescopic member 212, and the Y-axis telescopic member 212 is connected to the connecting ball 2125. The elastic plate 220 has a groove that is hinged to the connecting ball 2125. The axis of the calibration surface of the elastic plate 220 is set along the Z-direction. By setting the X-axis telescopic member 211 and the Y-axis telescopic member 212, the deformable support 210 can be prevented from affecting the deformation of the elastic plate 220 when it deforms in the XOY plane. By setting the connecting ball 2125 and the groove, the deformable support 210 can be further prevented from affecting the deformation of the elastic plate 220 when it deforms in the XOY plane.

[0058] The number of connecting balls 2125 is multiple, and the multiple connecting balls 2125 are arranged sequentially along the slide.

[0059] The X-direction telescopic member 211 includes a first sleeve rod 2111 and a first movable rod 2112. The first sleeve rod 2111 is arranged along the X direction, and the first movable rod 2112 is movably connected to the first sleeve rod 2111.

[0060] The Y-direction telescopic component 212 includes a second sleeve rod 2121, a second movable rod 2122, a transition rod 2123, and a support rod 2124. The second sleeve rod 2121 is fixedly connected to the first movable rod 2112. The second sleeve rod 2121 is arranged along the Y direction, and the second movable rod 2122 is movably connected to the second sleeve rod 2121. The transition rod 2123 is connected to the second movable rod 2122. The transition rod 2123 is arranged along the Z direction. The support rod 2124 is sequentially arranged on the transition rod 2123 along the Z direction. The connecting ball 2125 is arranged on the support rod 2124.

[0061] The first sleeve rod 2111 is connected to the frame 100.

[0062] The elastic plate 220 is provided with an observation window. Except for the observation window, the elastic plate 220 is coated with a filter layer. The observation window is provided with scale lines arranged sequentially along the length of the elastic plate 220.

[0063] The elastic plate 220 is made of elastic material.

[0064] refer to Figure 1 and Figure 2The rotary drive mechanism 300 includes a rotary drive component and a rotary transmission assembly. The rotary drive component is used to drive the support mechanism 400 to rotate through the rotary transmission assembly.

[0065] The rotary drive component is a rocker arm.

[0066] Specifically, the rotary transmission assembly includes a rotary driving gear and a rotary driven gear. The rotary driving gear is rotatably connected to the bracket, and the rotary driven gear is fixedly connected to the support mechanism 400 (turntable 410). The rotary driven gear and the support mechanism 400 (turntable 410) are coaxially arranged, and the rotary driving gear meshes with the rotary driven gear. The rotary driving member is used to drive the rotary driving gear to rotate. By driving the rotary driving gear to rotate, the rotary driven gear is driven to rotate, which in turn drives the support mechanism 400 to rotate, specifically driving the turntable 410 to rotate.

[0067] refer to Figure 1 , Figure 2 and Figure 3 The core structure surface detection device also includes a clamping drive mechanism 700 for driving the clamping mechanism 500 to clamp the core.

[0068] The clamping drive mechanism 700 includes a clamping drive assembly 710, a clamping drive transmission assembly 720, and a clamping drive rod 730. The clamping drive assembly 710 is used to drive the clamping drive rod 730 to move up and down along the rotation axis of the clamping mechanism 500 through the clamping drive transmission assembly 720. The clamping drive rod 730 is used to drive the clamping mechanism 500 to clamp the rock core, and the clamping drive rod 730 can rotate relative to the rotation axis of the clamping mechanism 500.

[0069] The clamping drive assembly 710 is a rocker arm.

[0070] The slider 510 has an annular groove, and the clamping drive rod 730 cooperates with the annular groove.

[0071] Preferably, the cross-section of the annular groove is T-shaped.

[0072] The clamping drive transmission assembly 720 includes a nut, and the clamping drive rod 730 is threaded. The nut is threadedly connected to the clamping drive rod 730, and the clamping drive assembly 710 is used to drive the nut to rotate. The nut is rotatably connected to the frame 100. By rotating the nut, the clamping drive rod 730 can be raised or lowered, thereby driving the clamping assembly to clamp or release the rock core.

[0073] The frame 100 includes a frame 110, a base plate 120, and a movable plate 130. The base plate 120 is fixed to the frame 110, and the movable plate 130 is slidably connected to the frame 110. The movable plate 130 can slide along the rotation axis of the support mechanism 400. One of the support mechanisms 400 is disposed on the base plate 120, and the other is disposed on the movable plate 130. One of the clamping mechanisms 500 is disposed on the base plate 120, and the other is disposed on the movable plate 130. The rotation drive mechanism 300 is disposed on the movable plate 130, and the clamping drive mechanism 700 is disposed on the movable plate 130 and the base plate 120 respectively.

[0074] The core structure surface detection device also includes an image acquisition mechanism, which is used to acquire image information of the core within the observation window.

[0075] In this embodiment, the process by which the core structure surface detection device detects the image information of the core is as follows:

[0076] First, move the movable plate 130 upward, causing the support mechanism 400, clamping mechanism 500, clamping drive mechanism 700 and rotation drive mechanism 300 to move upward. After the space between the support mechanism 400 on the base plate 120 and the support mechanism 400 on the movable plate 130 is sufficient to place the rock core, place the rock core on the support mechanism 400 on the base plate 120.

[0077] The second step is to move the movable plate 130 downwards, causing the support mechanism 400, clamping mechanism 500, clamping drive mechanism 700 and rotation drive mechanism 300 to move downwards until the support assembly is directly above the rock core, and the clamping mechanism 500 is driven by the clamping drive mechanism 700 to make the adjustment block 610 on the clamping mechanism 500 exactly in the slide 221.

[0078] The third step involves driving the clamping mechanism 500 to clamp the rock core using the clamping drive mechanism 700, and adjusting the shape and position of the elastic plate 220 using the adjusting block 610 so that the axis of the calibration surface on the elastic plate 220 is coaxial with the rotation axis of the support mechanism 400.

[0079] The fourth step involves driving the support mechanism 400 and the clamping mechanism 500 to rotate via the rotation drive mechanism 300, thereby driving the core to rotate. During the rotation, the image acquisition mechanism acquires image information of the core to detect the structural surface of the core.

[0080] This embodiment also provides a method for detecting the structural surface of a rock core, including...

[0081] S100, Establish a model for extracting structural surface information from borehole cores;

[0082] S200, acquires image information of the structural surfaces of the rock core;

[0083] S300 uses a borehole core structure surface information extraction model to identify the image information of the core's structure surface, and obtains information on the core's joints, fractures, weathering interfaces, and soil-rock interfaces.

[0084] Step S100, which establishes the borehole core structural surface information extraction model, includes:

[0085] Step S110: Use the YOLOV8 neural network model algorithm to establish a model for extracting structural surface information from borehole cores;

[0086] Step S120: In the borehole core structural surface information extraction model, labelstudio technology is used to label the existing borehole core image data, marking the joints, fractures, soil-rock interfaces and weathering interfaces on the core images.

[0087] Step S130: Input the existing borehole core image data samples into the borehole core structural surface information extraction model and train the borehole core structural surface information extraction model.

[0088] In step S130, the Mosaic data augmentation algorithm is used to stitch together images by randomly scaling, cropping, and arranging them to obtain more images that can be used for model training.

[0089] Step S130 also includes adjusting various hyperparameters of the borehole core structural surface information extraction model to obtain a high-accuracy borehole core structural surface information extraction model.

[0090] In step S300, the image information of the structural surface of the core is identified using the core structure surface information extraction model, and the joint, fracture, weathering interface, and soil-rock interface information of the core are obtained, including:

[0091] Step S310 involves using image perspective correction technology to perform secondary correction on the image information of the structural surfaces of the acquired rock core. Essentially, this involves projecting a two-dimensional image onto a three-dimensional observation plane and then converting it back to two-dimensional coordinates. The perspective correction equation is:

[0092]

[0093] Where (x, y, 1) are the two-pixel coordinates before perspective correction, M is the perspective correction matrix, and (x*, y*, z*) are the three-dimensional coordinates after perspective correction.

[0094] Step S320: Use the SegmentAnythingModel (SAM) to segment the image information of the collected core structure.

[0095] Step S330: Determine the length and width information of the borehole core by extracting the centroid and horizontal centerline of the mask contour of each borehole core in the borehole core structure surface information extraction model, obtain the length information of the borehole core, and calculate the RQD value of the borehole core.

[0096] In step S320, the MaskAttention mechanism is used to segment the image information of the structural surfaces of the acquired rock core. MaskAttention is...

[0097]

[0098]

[0099] in,

[0100] Where l is the network layer index, X l ∈R N×C Represents the query vector of layer l.

[0101] Q l =linear(X) l-1 )∈R N×C K l V l ∈R HW×C

[0102] Among them, M l-1 ∈{0,1} N×HW The M0 binary mask is generated by X0 before it is fed into the Transformer, and H... l and W l Let X0 represent the spatial resolution of the image features, and K represent the input query features of the Transformer decoder. l V l ∈R HW×C These are the transformed image features, Q l Let N be the pre-segmented embedding vector, and N be the number of pre-segmented vectors.

[0103] This allows each feature passing through the Transformer to interact only within the foreground region, rather than each pixel paying attention to the entire image.

[0104] In step S330, the length and width information of the borehole core are determined by the centroid and horizontal centerline of each borehole core mask contour in the SAM. Obtaining the length information of the borehole core allows for the calculation of its RQD value. Therefore, the equation for calculating the RQD value of the borehole core using the mask contour in the image should be:

[0105]

[0106] Among them, l i is the length of the i-th borehole core segment (greater than 10cm), l is the borehole depth, and β is the ratio of the physical length of the core box inner boundary to the image width. This system adds the functionality to calculate the borehole core length and the RQD value of the borehole core.

[0107] SAM consists of three components: an image encoder, a cue encoder, and a mask decoder, which are used to obtain a segmented image of the borehole core through mask decoding.

[0108] The core structure surface detection method also includes uploading the collected borehole core structure surface images and using a URL to access the cloud server to obtain the various marking results of the borehole core structure surface images.

[0109] The core structure surface detection device can simultaneously clamp the upper and lower ends of the core, ensuring that the rotation axis of the support mechanism 400 aligns with the core axis during rotational sampling. This prevents inaccurate sampling caused by core tilting during rotation. The scale lines used to calibrate the core structure surface information are set on a flexible support. During clamping and fixing, the calibration surface of the scale lines automatically adjusts to ensure it is coaxial with the core's circumference, reducing inaccuracies caused by inconsistent spacing between the scale lines and the core's circumference. Furthermore, the core structure surface detection method can extract information on joint fractures, weathering interfaces, soil-rock interfaces, core length, and the core's RQD value. This solves the problem of heavy, time-consuming, and labor-intensive manual identification of borehole core structure surface information, enabling rapid sampling and detection of the core structure surface, reducing detection errors, and improving detection efficiency and accuracy.

[0110] Example 2

[0111] This embodiment provides a core structure surface detection device. The difference between this embodiment and Embodiment 1 is that the clamping drive assembly 710 described in this embodiment is different from that in Embodiment 1.

[0112] refer to Figure 7 , Figure 8 and Figure 9 , Figure 7 This is a schematic diagram of the core structure surface detection device in Embodiment 2 of the present invention. Figure 8 This is a schematic diagram of the support mechanism 400 and clamping mechanism 500 in the core structure surface detection device of Embodiment 2 of the present invention. Figure 9 This is a partially enlarged schematic diagram of the core structure surface detection device in Embodiment 2 of the present invention. The clamping drive assembly 710 includes a clamping drive component and a clamping drive transmission component. The clamping drive component is rotatably connected to the frame 100. The clamping drive component is used to drive the clamping drive transmission assembly 720 to move through the clamping drive transmission component, so as to drive the clamping mechanism 500 to clamp the core.

[0113] The clamping drive component is a screw 711, and the clamping drive transmission component includes a transmission nut, a push rod 713, a rack 714, and a transmission gear 715. The screw 711 is rotatably connected to the frame 100, and the transmission nut is threadedly connected to the screw 711. The transmission nut can move relative to the transmission screw 711 in a direction perpendicular to the rotation axis of the support mechanism 400. The transmission nut is fixedly connected to the push rod 713, and the push rod 713 is slidably connected to the movable plate 130. The push rod 713 can move relative to the movable plate 130. The push rod 713 can slide relative to the movable plate 130 in a direction parallel to the rotation axis of the support mechanism 400. The rack 714 is fixedly connected to the push rod 713 and slidably connected to the movable plate 130. The rack 714 can slide relative to the movable plate 130 in a direction perpendicular to the rotation axis of the support mechanism 400. The rack 714 meshes with the transmission gear 715, and the transmission gear 715 is fixedly connected to the nut. By rotating the screw 711, the transmission nut can slide relative to the transmission screw 711 in a direction perpendicular to the rotation axis of the support mechanism 400, thereby driving the push rod 713 to slide relative to the movable plate 130 in a direction perpendicular to the rotation axis of the support mechanism 400, which in turn drives the rack 714 to slide relative to the movable plate 130 in a direction perpendicular to the rotation axis of the support mechanism 400, thereby driving the transmission gear 715 to rotate, achieving the purpose of driving the nut to rotate so as to drive the clamping mechanism 500 to clamp the rock core.

[0114] Preferably, the push rod 713 is fixedly connected to a guide rod that is movably sleeved with the bracket.

[0115] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A core structure surface detection device, comprising a frame, a rotary drive mechanism, and a support mechanism for supporting the core, characterized in that, It also includes a calibration mechanism, a clamping mechanism for holding the core on the outer circumferential surface of the core, and a calibration adjustment mechanism for adjusting the radius and position of the calibration surface. The support mechanism is rotatably mounted on the frame, and the rotary drive mechanism drives the support mechanism to rotate. The calibration mechanism has a cylindrical calibration surface, and the axis of the calibration surface is coaxial with the rotation axis of the support mechanism. The calibration adjustment mechanism includes adjustment blocks, a deformation bracket, and an elastic plate. The elastic plate is connected to the deformation bracket. The number of adjustment blocks is at least three, and the adjustment blocks are located on the same circumference. The clamping mechanism includes a clamping block, which is movably connected to the frame. The clamping block rotates around the rotation axis of the support mechanism and moves radially relative to the support mechanism. An adjusting block is disposed on the clamping block and is located further away from the rotation axis of the support mechanism than the clamping block. The elastic plate has a slide for cooperating with the adjusting block. There are two clamping mechanisms, which are arranged vertically opposite each other and rotate relative to the frame around the rotation axis of the support mechanism.

2. The rock core structure plane detecting apparatus according to claim 1, wherein The deformable bracket is connected to the elastic plate by a ball joint.

3. The rock core structure plane detecting apparatus according to claim 1, wherein The clamping mechanism further includes a clamping transmission assembly, a slide block, and at least three slide rods. The slide block is rotatably connected to the frame and rotates along the rotation axis of the support mechanism. The slide block is slidably connected to the slide rods and slides radially relative to the slide block along the support mechanism. The clamping block is disposed on the slide rods, and the clamping transmission assembly is used to drive the slide rods to slide.

4. The apparatus for detecting a structural plane of a core according to Claim 1, wherein The number of support mechanisms is two, and the two support mechanisms are arranged vertically opposite each other on the frame.

5. The apparatus for detecting a structural plane of a core according to claim 1, wherein It also includes a clamping drive mechanism for driving the clamping mechanism to clamp the rock core. The clamping drive mechanism includes a clamping drive assembly, a clamping drive transmission assembly, and a clamping drive rod. The clamping drive assembly is used to drive the clamping drive rod to move up and down along the axial direction of the clamping mechanism through the clamping drive transmission assembly. The clamping drive rod is used to drive the clamping mechanism to clamp the rock core, and the clamping drive rod rotates relative to the rotation axis of the clamping mechanism.

6. A method of detecting a structural plane of a rock core, characterized by, include Establish a model for extracting structural surface information from borehole cores; Image information of the structural surface of the rock core is acquired using the rock core structural surface detection device as described in any one of claims 1-5; By using the borehole core structural surface information extraction model, image information of the core's structural surface can be identified, and information on joints, fractures, weathering interfaces, and soil-rock interfaces can be obtained.

Images