Mining drilling peeping device and rock mass integrity testing and evaluating method

Abstract

The invention relates to the technical field of mining drilling peeping devices, in particular to a mining drilling peeping device and a rock mass integrity testing and evaluating method.The mining drilling peeping device comprises a detection assembly, the detection assembly comprises a panoramic camera and a host, the panoramic camera is electrically connected with the host, and the panoramic camera is used for collecting hole wall images within the preset depth range of a drilled hole; the host comprises a data processing unit, and the data processing unit is configured to receive the hole wall image, identify the crack type of each crack in the hole wall image, count the number of each crack in the hole wall image, set a weight parameter corresponding to each crack, and calculate a crack analysis value according to the weight parameter of each crack and the number of each crack; and judging a rock mass partitioning result according to the fracture analysis value. According to the method, rock mass integrity evaluation is upgraded from qualitative description to quantitative judgment, the problems that a traditional evaluation result is fuzzy and subjectivity is high are solved, and accurate data support is provided for surrounding rock stability evaluation.

Description

Technical Field

[0001] The invention relates to the technical field of mine drilling peek devices, and in particular to a mine drilling peek device and a rock mass integrity testing and evaluation method. Background Art

[0002] In the field of mining and underground engineering construction, borehole voyeurism technology is a direct and effective means of detection. Its core value lies in using special equipment to penetrate into the pre-constructed boreholes and accurately collect image information of the rock mass on the borehole wall, thereby providing indispensable first-hand data support for geological surveys in the early stages of the project, surrounding rock stability assessments during construction, scientific formulation of support plans, and later safety risk warnings.

[0003] In the existing technology, the method and system for determining the loosening zone of surrounding rock based on neural network and borehole peeping disclosed in CN119048848A use neural network to determine the loosening zone of surrounding rock. The core of the system is to score the sub-image of the rock layer image through the trained fracture image rating model, and then perform weighted moving average after scoring to obtain the score of the degree of surrounding rock fragmentation, and then compare the score with the threshold for determining the loosening zone of surrounding rock to determine the depth range of the loosening zone.

[0004] However, the above-mentioned existing technologies rely on complex neural network model training, which not only requires a lot of effort to build a training set containing massive labeled data, but also the model performance is easily affected by the distribution deviation of the training data, resulting in insufficient recognition stability in different scenarios; at the same time, the crack image rating model scores the sub-images only based on the abstract judgment of image features, and does not establish a correlation with the specific physical indicators of the cracks. It is impossible to distinguish the differentiated effects of different cracks on the strength of the rock mass through quantitative parameters, and it is difficult to form a quantitative evaluation system for evaluating the integrity of the rock mass based on the specific characteristics of each crack. As a result, the evaluation results are difficult to directly serve the precise design of the support scheme, and there are limitations in actual engineering applications. Summary of the Invention

[0005] In order to solve the problem in the existing mining borehole peeping technology, the traditional peeping device and the corresponding analysis method rely on complex neural network model training, which not only requires a lot of effort to build a training set containing massive labeled data, but also the model performance is easily affected by the distribution deviation of the training data, resulting in insufficient recognition stability in different scenarios; at the same time, the scoring of the sub-image by the fracture image rating model is only based on the abstract judgment of the image features, and is not associated with the specific physical indicators of the fracture. It is impossible to distinguish the differentiated effects of different fractures on the rock strength through quantitative parameters, and it is difficult to form a quantitative evaluation system for evaluating the integrity of the rock based on the specific characteristics of each fracture, resulting in the evaluation results being difficult to directly serve the precise design of the support scheme, and there are technical problems with limitations in actual engineering applications. On the one hand, the present invention provides a mining borehole peeping device, and on the other hand, provides a rock integrity test and evaluation method.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by a mining drilling peek device in the present invention is: A mining borehole peep device includes a detection component, the detection component includes a panoramic camera and a host, the panoramic camera is electrically connected to the host, and the panoramic camera is used to collect borehole wall images within a preset depth range of the borehole; The host includes a data processing unit, which is configured to: receive a borehole wall image, identify each crack in the borehole wall image, classify the crack types based on the maximum opening width of each crack, count the number of each crack type in the borehole wall image, set a weight parameter corresponding to each crack type, calculate a crack analysis value based on the weight parameter of each crack type and the number of each crack type, and determine a rock mass partitioning result based on the crack analysis value; Among them, the types of cracks include open cracks, slightly open cracks and nearly closed cracks. The maximum opening width of open cracks is greater than or equal to 3mm, the maximum opening width of slightly open cracks is greater than or equal to 1mm and less than 3mm, and the maximum opening width of nearly closed cracks is less than 1mm. The number of open cracks is , the number of slightly open cracks is , the number of nearly closed cracks is ; The weight parameters corresponding to open cracks, slightly open cracks, and nearly closed cracks are determined based on the service life of the current roadway. The weight parameter corresponding to open cracks is α, the weight parameter corresponding to slightly open cracks is β, and the weight parameter corresponding to nearly closed cracks is γ, α+β+γ=1; The crack analysis value is calculated based on the weight parameter of each crack and the number of each crack, including: the crack analysis value is ζ, ζ = (α × +β× +γ× ) / 10; The rock mass partition results judged according to the fracture analysis value include: if ζ>2, the rock mass partition is judged as a broken zone; if 1≦ζ≦2, the rock mass partition is judged as a slightly broken zone; if ζ<1, the rock mass partition is judged as an intact zone.

[0007] Using the above solution, the detection component includes a panoramic camera and a host computer. The panoramic camera is used to collect borehole wall images within the preset depth range of the borehole. The host computer uses a data processing unit to identify and classify the maximum opening width of each crack in each borehole wall image, directly linking the crack characteristics with specific physical indicators, solving the problem of relying on abstract image feature scoring and lacking physical indicator support in existing technologies. At the same time, by setting weight parameters and calculating crack analysis values, a quantitative evaluation system based on the specific characteristics of each crack is constructed, which can intuitively reflect the differentiated impact of different cracks on rock mass strength, upgrading the rock mass integrity evaluation from an abstract description to a calculable and verifiable quantitative result, and upgrading the rock mass integrity evaluation from a qualitative description to a quantitative judgment, solving the problem of ambiguity and strong subjectivity of traditional evaluation results, providing accurate data support for surrounding rock stability assessment, and directly serving the precise design of support schemes, matching targeted support parameters for different partitioned rock masses, and improving the scientific nature of engineering decision-making.

[0008] In addition, the present invention does not need to rely on complex neural network model training and massive labeled data, avoiding the stability problem caused by the influence of training data deviation on model performance. The operation process is simpler, and it can maintain stable evaluation accuracy in different mining environments and engineering scenarios, and has stronger adaptability.

[0009] This invention also clarifies the determination of fracture type based on the maximum fracture opening width, unifying fracture classification standards and quantitative analysis logic. This avoids the ambiguity of fracture type definitions and the lack of basis for impact weighting in traditional evaluations, making analysis results from different scenarios and by different personnel comparable. By using a specific formula to convert the abstract concept of rock mass integrity into a calculable and verifiable numerical indicator, the evaluation results are more intuitive and more instructive for engineering purposes, for example, providing a quantitative basis for support parameter design.

[0010] As a preferred implementation of a mining borehole peeping device, it also includes a pushing mechanism, which can be extended and retracted along the axial direction of the borehole to push the panoramic camera.

[0011] Existing mining borehole peep devices mostly use flexible tube probes, which need to be manually connected, pushed and pulled. The operation process is cumbersome and the recorded video quality is poor. It is prone to shaking, angle deviation, unclear picture, etc., which affect the subsequent analysis and processing. The upper structure scheme can realize the automatic movement of the panoramic camera in the borehole, reduce the intensity of manual operation, and the stable extension and retraction of the pushing mechanism can avoid shaking and angle deviation of the panoramic camera, ensure the stability and continuity of the hole wall image acquisition, and provide high-quality image data for subsequent crack analysis.

[0012] As an optimal implementation method of a mining drilling peeping device, the pushing mechanism includes a probe handle, one end of the probe handle is connected to a telescopic probe, the end of the telescopic probe away from the probe handle is connected to a peep probe, and a panoramic camera is installed on the peep probe.

[0013] The above structural solution makes the equipment layout more compact, which is convenient for operation in the narrow space underground. In addition, the panoramic camera is integrated into the peep probe to ensure a stable distance between the lens and the hole wall, reducing image distortion. At the same time, the probe can provide initial protection for the camera, reducing the risk of damage to the lens from dust and gravel in the hole.

[0014] As a preferred implementation of a mining borehole peep device, a transparent probe cover is provided on the outside of the peep probe.

[0015] By adopting the above-mentioned structural scheme, the transparent probe cover can physically isolate impurities such as dust, water droplets, and rock chips in the hole, preventing them from directly adhering to the lens of the panoramic camera. This solves the problem that the lens of traditional devices is easily contaminated and causes blurred images. In addition, the transparent material does not affect the image acquisition effect. While protecting the lens, it ensures the clarity of the hole wall image and reduces the difficulty of subsequent image preprocessing.

[0016] As a preferred implementation of a mining drilling peep device, a heating device is provided on the side of the peep probe close to the telescopic probe rod, and a temperature sensor is connected to the inner wall of the transparent probe cover, and the temperature sensor is electrically connected to the heating device.

[0017] When drilling underground for peeping, the temperature at the end of the borehole is often much higher than that outside the hole. When the peeping probe goes deep into the end for peeping, the panoramic camera is often covered with water mist due to the temperature difference, resulting in unclear images and affecting the peeping effect. With the above-mentioned structural scheme, the temperature in the hole is sensed in real time by the temperature sensor, and the heating device simultaneously heats the peeping probe to the matching temperature, eliminating water mist from the root, allowing the panoramic camera to adapt to temperature changes at different drilling depths, ensuring that the lens is always clear, and improving the adaptability of the device in complex environments.

[0018] As an optimal implementation method of a mining drilling peeping device, a switch console is provided on the probe rod handle, which includes a power switch key, a probe rod lifting key and a probe heating key. The probe rod lifting key is electrically connected to the telescopic probe rod, the probe heating key is electrically connected to the heating device, and the power switch key is used to control the power on and off.

[0019] This structural solution allows for quick control of the probe lift and probe heating via buttons on the probe handle, eliminating the need for complex operation steps and improving operational efficiency. Furthermore, the clearly defined function buttons reduce the risk of misoperation, making it particularly suitable for use in underground mines with poor lighting and complex environments, enhancing both ease of use and safety.

[0020] As a preferred implementation of a mining drilling peep device, the telescopic probe includes a sleeve shaft group, which includes a plurality of sleeve shaft bodies coaxially sleeved from outside to inside; One end of the sleeve shaft body located at the outermost end of the sleeve shaft assembly is fixedly connected to the probe handle, and the other end is fixedly connected to the housing; The end of the sleeve body located at the innermost part of the sleeve group, away from the probe rod handle, is connected to the rack. The axial direction of the sleeve body is consistent with the length direction of the rack. A gear and a drive motor are provided in the casing. The gear is engaged with the rack, and the gear is coaxially fixedly connected to the output shaft of the drive motor.

[0021] The above-mentioned structural solution ensures the linearity and stability of the probe rod's extension and retraction, avoiding the bending and shaking of traditional flexible probe rods. This ensures that the panoramic camera moves at a uniform speed along the borehole axis, improving the spatial positioning accuracy of image acquisition. Furthermore, the transmission method of gears, racks, and drive motors precisely controls the extension and retraction speed. This, combined with the preset parameters of the main unit, allows for uniform elevation and retraction, making it easy to precisely control depth.

[0022] The technical solution adopted by a rock mass integrity testing and evaluation method in the present invention is: A rock mass integrity testing and evaluation method comprises the following steps: S1, collecting and receiving the hole wall image within the preset drilling depth range; S2. Identify each crack in the hole wall image, classify the crack types based on the maximum opening width of each crack, count the number of each type of crack in the hole wall image, and set the weight parameter corresponding to each type of crack; S3. Calculate the crack analysis value according to the weight parameter of each crack and the number of each crack; S4. Determine the rock mass zoning results based on the fracture analysis values.

[0023] As a preferred implementation of a rock mass integrity test and evaluation method, it also includes the following steps: S5. After grouting the surrounding rock, repeat steps S1-S3 to obtain the post-grouting crack analysis value.

[0024] The above-mentioned rock integrity test and evaluation method realizes the quantitative comparison of the crack status before and after grouting, can scientifically evaluate the filling effect of grouting on cracks, and can also provide data support for optimizing grouting parameters, promoting the transformation of grouting reinforcement from empirical operation to precise construction under quantitative guidance, and improving the economy and effectiveness of surrounding rock reinforcement.

[0025] The beneficial effects of the present invention include: 1. The detection component includes a panoramic camera and a host. The panoramic camera is used to collect borehole wall images within a preset depth range. The host uses a data processing unit to identify and classify the maximum opening width of each crack in each borehole wall image, directly linking the crack characteristics with specific physical indicators. This solves the problem of existing technologies that rely on abstract image feature scoring and lack physical indicator support.

[0026] 2. By setting weight parameters and calculating crack analysis values, a quantitative evaluation system based on the specific characteristics of each crack was constructed, which can intuitively reflect the differentiated effects of different cracks on rock strength, upgrade the rock integrity evaluation from an abstract description to a calculable and verifiable quantitative result, and upgrade the rock integrity evaluation from a qualitative description to a quantitative judgment, solving the problems of fuzzy and highly subjective traditional evaluation results. It provides accurate data support for surrounding rock stability assessment, can directly serve the precise design of support schemes, match targeted support parameters for different rock partitions, and improve the scientific nature of engineering decision-making.

[0027] 3. The present invention does not need to rely on complex neural network model training and massive labeled data, avoiding the stability problem caused by the influence of training data deviation on model performance. The operation process is simpler, and it can maintain stable evaluation accuracy in different mining environments and engineering scenarios, and has stronger adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a structural diagram of a mining drilling peek device according to a specific embodiment of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the push mechanism when it is contracted according to a specific embodiment of the present invention Figure 1 ; Figure 3 This is a schematic diagram of the cross-sectional structure of the push mechanism when it is extended according to a specific embodiment of the present invention. Figure 2 ; Figure 4 It is a structural schematic diagram of a peep probe according to a specific embodiment of the present invention.

[0030] List of parts and reference numerals: 1. Panoramic camera; 2. Main unit; 3. Push mechanism; 31. Probe handle; 32. Telescopic probe; 321. Sleeve shaft body; 322. Housing; 323. Rack; 324. Gear; 325. Drive motor; 326. Output shaft; 33. Peeping probe; 34. Transparent probe cover; 35. Heating device; 36. Temperature sensor; 37. Switch console; 371. Power switch; 372. Probe lift button; 373. Probe heating button. DETAILED DESCRIPTION

[0031] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0032] Reference Figure 1-4 This embodiment provides a mining borehole viewing device, comprising a detection assembly and a push mechanism 3. The detection assembly includes a panoramic camera 1 and a host computer 2. The panoramic camera 1 is electrically connected to the host computer 2 and is used to capture borehole wall images within a preset depth range. For example, the preset depth range is 0-h, the borehole diameter is r, and the borehole wall image is an expanded view with a size of h × 2πr.

[0033] The pushing mechanism 3 can be extended and retracted along the axial direction of the borehole to push the panoramic camera 1. The pushing mechanism 3 includes a probe handle 31, one end of which is connected to a telescopic probe 32. The end of the telescopic probe 32, away from the probe handle 31, is connected to a peep probe 33. The panoramic camera 1 is mounted on the peep probe 33. A transparent probe cover 34 is provided on the outside of the peep probe 33. A heating device 35 is provided on the side of the peep probe 33 close to the telescopic probe 32. A temperature sensor 36 is connected to the inner wall of the transparent probe cover 34. The temperature sensor 36 is electrically connected to the heating device 35. The temperature sensor 36 is an intrinsically safe temperature sensor 36. The temperature measured by the temperature sensor 36 can be used to reflect the temperature within the borehole.

[0034] The telescopic probe 32 comprises a sleeve assembly, which includes several sleeve bodies 321 coaxially sleeved from the outside inward. The outermost sleeve body 321 is fixedly connected to the probe handle 31 at one end and to the housing 322 at the other end. The innermost sleeve body 321, located away from the probe handle 31, is connected to a rack 323 at its end. The axial direction of the sleeve body 321 aligns with the length of the rack 323. The peep probe 33 is mounted on the end of the rack 323 away from the probe handle 31. A gear 324 and a drive motor 325 are housed within the housing 322. The gear 324 is a miniature gear 324 that meshes with the rack 323 and is coaxially fixedly connected to the output shaft 326 of the drive motor 325. The driving motor 325 can drive the peep probe 33 to automatically rise or fall at a uniform speed. The lifting speed can be set in advance on the host 2, so that the recording time of each panoramic camera 1 can correspond to the depth range of each image acquisition, which is convenient for accurately controlling the drilling depth covered by each hole wall image.

[0035] A switch console 37 is provided on the probe handle 31, which includes a power switch key 371, a probe lift key 372 and a probe heating key 373. The probe lift key 372 is electrically connected to the drive motor 325 of the telescopic probe 32, and the probe heating key 373 is electrically connected to the heating device 35. The power switch key 371 is used to control the power on and off of the entire device. When the power switch key 371 is turned on, each component is in standby state.

[0036] The host 2 includes a data processing unit, which is configured to: receive a hole wall image, identify each crack in the hole wall image, classify the crack types based on the maximum opening width of each crack, count the number of each crack in the hole wall image, set the weight parameter corresponding to each crack, calculate the crack analysis value according to the weight parameter of each crack and the number of each crack, and judge the rock mass zoning result according to the crack analysis value.

[0037] In this embodiment, the crack types include open cracks, slightly open cracks and nearly closed cracks. The maximum opening width of a single open crack is greater than or equal to 3mm, the maximum opening width of a single slightly open crack is greater than or equal to 1mm and less than 3mm, and the maximum opening width of a single nearly closed crack is less than 1mm. The number of open cracks is , the number of slightly open cracks is , the number of nearly closed cracks is The weight parameter corresponding to open cracks is α, the weight parameter corresponding to slightly open cracks is β, and the weight parameter corresponding to nearly closed cracks is γ, where α+β+γ=1.

[0038] There are significant differences in the impact of different types of cracks on rock stability. Open cracks can significantly reduce the integrity and bearing capacity of the rock mass, and have the strongest destructive effect on rock stability. In the practice of mining and underground engineering construction, open cracks are often an important factor leading to surrounding rock instability and causing safety accidents; slightly open cracks have the second greatest impact on rock stability, and nearly closed cracks have a relatively small impact on rock stability.

[0039] The service life of different types of roadways varies significantly, directly impacting rock mass stability requirements. For example, development roadways are constructed at the outset of a coal mine and remain in use until its closure. Their service life is the same as the mine itself, 50-60 years. Preparation roadways serve the mining area and are dedicated to mining operations in a specific area, with a service life of 10-20 years. Stoping roadways, which form and serve the coal face during mining operations, have a service life of only 1-3 years. The longer the service life, the more critical the function the roadway performs throughout the project lifecycle, the higher the requirements for surrounding rock stability, and the more stringent the need to mitigate safety risks. Furthermore, cracks in the rock mass of long-serving roadways (especially open cracks) may expand further due to long-term stress, groundwater erosion, and other factors, cumulatively damaging rock mass stability over time.

[0040] Therefore, for tunnels that are used for a long time, it is necessary to increase the weight parameters of open cracks that are more harmful to more sensitively reflect their potential risks and ensure that the evaluation results can meet the needs of long-term safety management and control.

[0041] In view of this, this embodiment adjusts the weight parameters of various types of cracks in combination with the service life of the tunnel, so that the crack analysis value can be more in line with the actual service requirements of the tunnel. The details are as follows: (1) Development tunnels: Due to their long service life and high importance, the weight parameter α for open fractures is 50%-70%, the weight parameter β for slightly open fractures is 20%-40%, and the weight parameter γ for nearly closed fractures is 5%-15%. This setting makes it easier to identify the rock mass zoning results as broken areas, thereby matching more stringent support measures; (2) Preparation of tunnels: the weight parameter α for open fractures is 30%-50%, the weight parameter β for slightly open fractures is 30%-40%, and the weight parameter γ for nearly closed fractures is 10%-20%; (3) Mining tunnel: The weight parameter α of open fractures is 10%-30%, the weight parameter β of slightly open fractures is 40%-50%, and the weight parameter γ of nearly closed fractures is 20%-40%.

[0042] The crack analysis value is calculated based on the weight parameter of each crack and the number of each crack, including: the crack analysis value is ζ, ζ = (α × +β× +γ× ) / 10; The rock mass partition results judged according to the fracture analysis value include: if ζ>2, the rock mass partition is judged as a broken zone; if 1≦ζ≦2, the rock mass partition is judged as a slightly broken zone; if ζ<1, the rock mass partition is judged as an intact zone.

[0043] This embodiment sets weight parameters differently according to the service life of the tunnel, so that the rock mass zoning judgment based on the fracture analysis value ζ can better meet the actual needs of different tunnels and provide a more accurate basis for support scheme design and maintenance cycle planning.

[0044] The following examples illustrate this: Example 1: Assume that the number of cracks within the preset depth range of a borehole is: open cracks ( ) = 5, slightly open cracks ( ) = 4, nearly closed cracks ( ) = 3 items.

[0045] For the development tunnel, α=60%, β=30%, γ=10% are preset, and the fracture analysis value ζ=(0.6×5+0.3×4+0.1×3) / 10=(3+1.2+0.3) / 10=4.5 / 10=0.45. Since ζ=0.45<1, the rock mass zoning judgment result is a complete area.

[0046] For the preparation tunnel, α=40%, β=35%, γ=15% are preset, and the fracture analysis value ζ=(0.4×5+0.35×4+0.15×3) / 10=(2+1.4+0.45) / 10=3.85 / 10=0.385. Since ζ=0.385<1, the rock mass zoning judgment result is the complete area.

[0047] For the mining tunnel, α=20%, β=45%, γ=35% are preset, and the fracture analysis value ζ=(0.2×5+0.45×4+0.35×3) / 10=(1+1.8+1.05) / 10=3.85 / 10=0.385. Since ζ=0.385<1, the rock mass zoning judgment result is the complete area.

[0048] Example 2: Assume that the number of cracks within the preset depth range of a borehole is: open cracks ( ) = 25, slightly open cracks ( ) = 18, nearly closed cracks ( ) = 7 items.

[0049] For the development tunnel, α=70%, β=20%, γ=10% are preset, and the fracture analysis value ζ=(0.7×25+0.2×18+0.1×7) / 10=(17.5+3.6+0.7) / 10=21.8 / 10=2.18. Since ζ=2.18>2, the rock mass zoning judgment result is the broken zone.

[0050] For the preparation tunnel, α=40%, β=35%, γ=25% are preset, the fracture analysis value ζ=(0.4×25+0.35×18+0.25×7) / 10=(10+6.3+1.75) / 10=18.05 / 10=1.805, 1<1.805<2, and the rock mass zoning judgment result is the micro-crushing zone.

[0051] For the mining tunnel, α=10%, β=40%, γ=50% are preset, and the fracture analysis value ζ=(0.1×25+0.4×18+0.5×7) / 10=(2.5+7.2+3.5) / 10=13.2 / 10=1.32. Since 1<1.32<2, the rock mass zoning judgment result is the micro-crushed zone.

[0052] From Example 2, we can also know that even if the number of each type of crack is the same, the judgment results of rock mass partitioning may be different in different tunnels.

[0053] The working process of the mine drilling peep device is as follows: Turn on the power switch 371 and preset the detection parameters on the host 2, including the preset detection depth range of the drilling, the lifting speed of the telescopic probe 32, and the weight parameters α, β and γ of the crack type.

[0054] The operator grips the probe handle 31 and aligns the peep probe 33 with the borehole entrance. Using the probe lift button 372 on the switch console 37, the telescopic probe 32 is activated. The drive motor 325 rotates the gear 324, which engages the rack 323, causing the sleeve assembly to extend along the borehole axis, pushing the peep probe 33 into the borehole. The sleeve assembly ensures smooth extension and retraction of the probe, avoiding the wobble of traditional flexible probes. This ensures that the panoramic camera 1 moves at a constant speed along the borehole axis, accurately covering the preset depth range.

[0055] When the temperature difference within the borehole is large, a temperature sensor 36 on the inner wall of the transparent probe cover 34 monitors the borehole temperature in real time. If a sudden temperature change causes water mist to form on the inner wall of the probe cover, the temperature sensor 36 sends a signal to the heating device 35 to automatically activate heating, or manually activate it using the probe heating key 373. This adjusts the temperature of the peek probe 33 to match the ambient temperature within the borehole, eliminating interference from water mist on image acquisition. The transparent probe cover 34 also physically isolates dust, rock debris, and water droplets from the borehole, preventing lens contamination and ensuring clear images.

[0056] As the telescopic probe 32 extends at a constant speed, the panoramic camera 1, mounted within the viewing probe 33, is activated simultaneously, continuously capturing images of the borehole wall within a preset depth range. The panoramic camera 1 captures a 360-degree circular image of the borehole wall, generating an expanded planar image—the borehole wall image. The host computer 2 receives and stores the borehole wall image in real time, providing raw data for subsequent analysis.

[0057] The data processing unit of the host 2 processes the collected hole wall image in the following way: Identify each crack in the hole wall image and classify the crack type based on the maximum opening width of each crack. Specifically, use an image recognition algorithm to distinguish the crack type based on the maximum opening width of the crack. The number of three types of cracks are counted separately, and the number of open cracks is recorded as , the number of slightly open cracks is recorded as , the number of nearly closed cracks is recorded as ; By the formula ζ=(α× +β× +γ× ) / 10, calculate the crack analysis value ζ; The rock mass partition corresponding to each hole wall image is delineated according to the fracture analysis value ζ. If ζ>2, the rock mass partition is judged as a broken zone; if 1≦ζ≦2, the rock mass partition is judged as a slightly broken zone; if ζ<1, the rock mass partition is judged as an intact zone.

[0058] Finally, by reverse operation of the probe rod lifting key 372, the driving motor 325 drives the gear 324 to reverse, the sleeve shaft group contracts, and the peep probe 33 is withdrawn from the borehole to the initial position at a uniform and stable speed.

[0059] This embodiment also proposes a rock mass integrity testing and evaluation method, comprising the following steps: S1, collecting and receiving the hole wall image within the preset drilling depth range; S2. Identify each crack in the hole wall image, classify the crack types based on the maximum opening width of each crack, count the number of each type of crack in the hole wall image, and set the weight parameter corresponding to each type of crack; S3. Calculate the crack analysis value according to the weight parameter of each crack and the number of each crack; S4. Determine the rock mass zoning results based on the fracture analysis values.

[0060] S5. After grouting the surrounding rock, repeat steps S1-S3 to obtain the post-grouting crack analysis value.

[0061] After grouting of the surrounding rock, the original internal cracks of the surrounding rock will be filled with grouting slurry to varying degrees, and the three types of cracks will be redistributed. By comparing the crack analysis value after grouting with the original crack analysis value, the crack reduction rate can be obtained. The crack reduction rate can be used to analyze and evaluate the strengthening effect of grouting on the surrounding rock.

[0062] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mining borehole peep device, comprising a detection assembly, characterized in that: The detection component includes a panoramic camera (1) and a host (2), wherein the panoramic camera (1) is electrically connected to the host (2), and the panoramic camera (1) is used to collect hole wall images within a preset drilling depth range; The host (2) includes a data processing unit, which is configured to: receive a hole wall image, identify each crack in the hole wall image, classify the crack types based on the maximum opening width of each crack, count the number of each crack in the hole wall image, calculate a crack analysis value based on a preset weight parameter of each crack and the number of each crack, and determine a rock mass partitioning result based on the crack analysis value; Among them, the types of cracks include open cracks, slightly open cracks and nearly closed cracks. The maximum opening width of open cracks is greater than or equal to 3mm, the maximum opening width of slightly open cracks is greater than or equal to 1mm and less than 3mm, and the maximum opening width of nearly closed cracks is less than 1mm. The number of open cracks is , the number of slightly open cracks is , the number of nearly closed cracks is ; The weight parameters corresponding to open cracks, slightly open cracks, and nearly closed cracks are determined based on the service life of the current roadway. The weight parameter corresponding to open cracks is α, the weight parameter corresponding to slightly open cracks is β, and the weight parameter corresponding to nearly closed cracks is γ, α+β+γ=1; The crack analysis value is calculated based on the weight parameter of each crack and the number of each crack, including: the crack analysis value is ζ, ζ = (α × +β× +γ× ) / 10; The rock mass partition results judged according to the fracture analysis value include: if ζ>2, the rock mass partition is judged as a broken zone; if 1≦ζ≦2, the rock mass partition is judged as a slightly broken zone; if ζ<1, the rock mass partition is judged as an intact zone.

2. A mining drilling peek device according to claim 1, characterized in that: It also includes a pushing mechanism (3), which can be extended and retracted along the axial direction of the drill hole to push the panoramic camera (1).

3. A mining drilling peek device according to claim 2, characterized in that: The pushing mechanism (3) comprises a probe handle (31), one end of the probe handle (31) is connected to a telescopic probe (32), one end of the telescopic probe (32) away from the probe handle (31) is connected to a peep probe (33), and the panoramic camera (1) is mounted on the peep probe (33).

4. A mining drilling peek device according to claim 3, characterized in that: A transparent probe cover (34) is provided on the outside of the peek probe (33).

5. A mining drilling peek device according to claim 4, characterized in that: A heating device (35) is provided on one side of the peep probe (33) close to the telescopic probe rod (32), and a temperature sensor (36) is connected to the inner wall of the transparent probe cover (34), and the temperature sensor (36) is electrically connected to the heating device (35).

6. A mining drilling peek device according to claim 5, characterized in that: A switch console (37) is provided on the probe handle (31), and the switch console (37) includes a power switch key (371), a probe lift key (372) and a probe heating key (373), the probe lift key (372) is electrically connected to the telescopic probe (32), the probe heating key (373) is electrically connected to the heating device (35), and the power switch key (371) is used to control the power on and off.

7. A mining drilling peek device according to claim 3, characterized in that: The telescopic probe (32) includes a sleeve shaft assembly, which includes a plurality of sleeve shaft bodies (321) that are coaxially sleeved from outside to inside; One end of the sleeve shaft body (321) located at the outermost portion of the sleeve shaft assembly is fixedly connected to the probe handle (31), and the other end is fixedly connected to the housing (322); The sleeve shaft body (321) located at the innermost part of the sleeve shaft assembly is connected to the rack (323) at one end away from the probe handle (31). The axial direction of the sleeve shaft body (321) is consistent with the length direction of the rack (323). A gear (324) and a drive motor (325) are provided in the housing (322). The gear (324) is meshed with the rack (323). The gear (324) is coaxially fixedly connected to the output shaft (326) of the drive motor (325).

8. A rock mass integrity testing and evaluation method, characterized in that: The following steps are involved: S1, collecting and receiving the hole wall image within the preset drilling depth range; S2. Identify each crack in the hole wall image, classify the crack types based on the maximum opening width of each crack, count the number of each type of crack in the hole wall image, and set the weight parameter corresponding to each type of crack; S3. Calculate the crack analysis value according to the weight parameter of each crack and the number of each crack; S4. Determine the rock mass zoning results based on the fracture analysis values.

9. A rock mass integrity testing and evaluation method according to claim 8, characterized in that: The following steps are also included: S5. After grouting the surrounding rock, repeat steps S1-S3 to obtain the post-grouting crack analysis value.

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