A tunnel surrounding rock stability testing device

Abstract

This utility model discloses a tunnel surrounding rock stability detection device, relating to the field of coal mine tunnel surrounding rock construction detection technology. It includes a detection instrument with infrared cameras symmetrically fixedly mounted at both ends, and an infrared light source emitting module fixedly mounted on the outer side of each infrared camera. A support assembly is fixedly mounted on the bottom surface of the detection instrument. The support assembly includes a base installed below the detection instrument, and a threaded rod is fixedly mounted on the bottom surface of the base. A connecting cylinder is fixedly sleeved at the bottom end of the threaded rod, and three sets of support rods are symmetrically rotatably connected to the outside of the connecting cylinder. The support assembly provides stable support for the equipment. By using a drive ring linked with a moving disk, multiple sets of support rods are driven to open and close synchronously, ensuring stability and effectively replacing the traditional manual hand-held method. This avoids equipment vibration during monitoring and improves monitoring accuracy.

Description

Technical Field

[0001] This utility model relates to the field of coal mine tunnel surrounding rock construction detection technology, specifically a tunnel surrounding rock stability detection device. Background Technology

[0002] The tunnel surrounding rock stability detection device is an instrument used to monitor the deformation and stress changes of the tunnel excavation face and surrounding rock mass in real time. It accurately collects data through multi-point displacement gauges, stress gauges and acoustic wave testing, and provides timely warnings of safety hazards such as loosening and collapse of the surrounding rock. It is a core technical equipment to ensure tunnel construction safety and optimize support parameters.

[0003] Existing tunnel surrounding rock monitoring equipment mostly relies on manual operation by operators. However, in the complex environment of tunnels, it is difficult for operators to overcome hand tremors caused by physiological fatigue when maintaining a fixed standing posture for manual monitoring for a long time. This can easily lead to deviations in the detection data, thereby reducing the monitoring accuracy and affecting the consistency and reliability of the data during long-term continuous monitoring. Utility Model Content

[0004] The purpose of this invention is to provide a tunnel surrounding rock stability detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tunnel surrounding rock stability detection device includes a detector, wherein infrared cameras are symmetrically fixedly installed at both ends of the detector, and an infrared light source emitting module is fixedly installed on the outside of each set of infrared cameras. A support assembly is fixedly installed on the bottom surface of the detector. The support assembly includes a base, which is installed below the detector. A threaded rod is fixedly installed on the bottom surface of the base. A connecting cylinder is fixedly sleeved at the bottom end of the threaded rod. Three sets of support rods are symmetrically rotatably connected to the outside of the connecting cylinder.

[0007] As a further embodiment of this utility model, a movable disk is slidably sleeved on the outer side of the threaded rod, and three sets of auxiliary rods are symmetrically and rotatably installed on the bottom surface of the movable disk, and the bottom end of each set of auxiliary rods is respectively hinged to the outer side of the corresponding support rod. A drive ring is rotatably installed on the top surface of the movable disk, and the drive ring is threadedly sleeved on the threaded rod.

[0008] As a further embodiment of this utility model, each set of support rods has a connector rotatably installed at its bottom end, each set of connectors has a rotating shaft threaded into its interior, and the bottom end of each set of rotating shafts passes through the corresponding connector and is rotatably installed with a support base.

[0009] As a further embodiment of this utility model, the base and the detector are fixedly connected by a connecting component. The connecting component includes a plug and a socket. The plug is fixedly installed on the bottom surface of the detector, and the socket is fixedly installed on the top surface of the base. The socket has a slot in its inner cavity, and the plug is embedded in the slot.

[0010] As a further embodiment of this utility model, the inner cavity of the socket is provided with a movable groove, and an unlocking block is slidably installed in the movable groove. A locking block is fixedly installed on the top surface of the unlocking block, and the locking block passes through the movable groove and the slot in sequence and engages with the plug. One end of the unlocking block protrudes from the socket, and its other end is fixedly connected to the inner wall of the socket through a thrust spring.

[0011] As a further embodiment of this invention, a display screen and two sets of control buttons are fixedly installed on one side of the detector, with the two sets of control buttons located on opposite sides of the display screen.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. When using the tunnel surrounding rock stability detection device of this utility model, the support components provide stable support for the equipment. The drive ring and the moving disk are linked to drive multiple sets of support rods to open and close synchronously, ensuring stability. This effectively replaces the traditional manual hand-held method, avoids equipment shaking during monitoring, and improves the accuracy of monitoring.

[0013] 2. When using the tunnel surrounding rock stability testing device of this utility model, the connecting component enables quick docking between the testing instrument and the support rod, simplifying the equipment disassembly and replacement process, ensuring connection reliability, and optimizing the convenience and efficiency of on-site operations; 3. When using the tunnel surrounding rock stability detection device of this utility model, the binocular stereo vision algorithm and triangulation model in the image processing system are used to realize the non-contact physical quantity measurement of the surrounding rock deformation, so as to ensure the quantitative analysis of the evolution law of the spatial displacement vector of the surrounding rock. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a tunnel surrounding rock stability detection device.

[0015] Figure 2 A schematic diagram of the structure of a support component in a tunnel surrounding rock stability testing device. Figure 1 .

[0016] Figure 3 A schematic diagram of the structure of a support component in a tunnel surrounding rock stability testing device. Figure 2 .

[0017] Figure 4 Structural breakdown of a connecting component in a tunnel surrounding rock stability testing device Figure 1 .

[0018] Figure 5 Structural breakdown of a connecting component in a tunnel surrounding rock stability testing device Figure 2 .

[0019] In the diagram: 1. Detector; 2. Infrared camera; 3. Display screen; 4. Control buttons; 5. Connecting components; 501. Insert block; 502. Socket; 503. Slot; 504. Moving slot; 505. Unlocking block; 506. Locking block; 507. Thrust spring; 508. Locking groove; 6. Support assembly; 601. Base; 602. Threaded rod; 603. Connecting cylinder; 604. Support rod; 605. Moving disk; 606. Auxiliary rod; 607. Drive ring; 608. Connecting disk; 609. Fixed tube; 610. Connecting rod; 611. Connector; 612. Rotating shaft; 613. Support base; 614. Rotating cap. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 , Figure 2 In this embodiment of the present invention, a tunnel surrounding rock stability detection device includes a detector 1. Infrared cameras 2 are symmetrically fixedly installed at both ends of the detector 1, and an infrared light source emission module is fixedly installed on the outside of each set of infrared cameras 2. The detector 1 integrates an image processing system to realize non-contact displacement calculation of the tunnel surrounding rock. The system is configured to execute a binocular stereo vision parallax matching algorithm, and construct a mathematical calculation framework based on a triangulation model using preset known camera baseline distance and focal length parameters. By comparing the synchronous images collected by the left and right sets of infrared cameras 2 with the surrounding rock point cloud data acquired at different times, the displacement vector of the surrounding rock measuring point in the spatial coordinate system is calculated, thereby realizing a quantitative assessment of the surrounding rock stability. It should be noted that the binocular stereo vision parallax matching algorithm simulates the imaging principle of human eyes. It uses two sets of infrared cameras 2 to capture the same scene from different perspectives and uses the principle of triangulation to calculate the three-dimensional coordinates of the target point. This type of algorithm has detailed theoretical support in "Computer Vision: Algorithms and Applications" and various mine automation surveying standards (such as the requirements for non-contact observation in the "Coal Mine Pressure Manifestation Observation Specification"). At the same time, the quantitative analysis of surrounding rock deformation calculates the translation or deformation vector of the point cloud by comparing the surrounding rock point cloud data of different time periods. It is the core means of "digital twin" technology in geological exploration and tunnel construction. This part is also existing technology and will not be described further in this embodiment. A support component 6 is fixedly installed on the bottom surface of the detector 1 to achieve stable installation of the equipment, replacing manual handling and effectively preventing the equipment from shaking during monitoring, ensuring the continuity and reliability of long-term continuous monitoring data. The support component 6 includes a base 601, which is installed below the detector 1. A threaded rod 602 is fixedly installed on the bottom surface of the base 601. A connecting cylinder 603 is fixedly sleeved at the bottom end of the threaded rod 602. Three sets of support rods 604 are symmetrically rotated and connected to the outside of the connecting cylinder 603 through pins to form a stable triangular support structure. It should be noted that the detector 1 specifically uses the YHW8 model intrinsically safe wireless surrounding rock displacement monitoring instrument for mining. The detector 1 is equipped with a battery and its shell is made of flame-retardant material to ensure stable operation of the equipment in low-light and high-risk environments underground. Through automated data acquisition and spatial positioning technology, it can quickly complete the detection of roadway surrounding rock deformation, effectively improving measurement efficiency and accuracy, thereby solving the problems of long time consumption, large error and low safety of traditional manual measurement.

[0022] Please see Figure 2 , Figure 3 A movable disk 605 is slidably sleeved on the outer side of the threaded rod 602. Three sets of auxiliary rods 606 are symmetrically mounted on the bottom surface of the movable disk 605 via pins. The bottom end of each set of auxiliary rods 606 is hinged to the outer side of the corresponding support rod 604 via pins. A drive ring 607 is rotatably mounted on the top surface of the movable disk 605 via bearings. The drive ring 607 is threaded onto the threaded rod 602. The inner wall of the drive ring 607 is provided with an internal thread that matches the external thread of the threaded rod 602. By rotating the drive ring 607, the movable disk 605 can be driven to move axially, thereby driving the auxiliary rods 606 to push the three sets of support rods 604 to expand or retract synchronously, so as to realize the rapid and stable erection of the equipment under complex working conditions. It should be noted that the movable disk 605 has three sets of movable slots for providing movement for the auxiliary rods 606, and each set of auxiliary rods 606 is located in the corresponding movable slot. A connecting disk 608 is installed between the three sets of support rods 604. A fixing tube 609 is fixedly sleeved on the outside of each set of support rods 604, and each set of fixing tubes 609 is rotatably connected to the connecting disk 608 through a connecting rod 610. This effectively improves the integrity and impact resistance of the three sets of support rods 604, and ensures the fixed reliability of the detector 1 in complex disturbance environments. Each set of support rods 604 has a connector 611 rotatably mounted at the bottom end via a pin. Each set of connectors 611 has a rotating shaft 612 threaded into its interior. The bottom end of each set of rotating shafts 612 passes through the corresponding connector 611 and is rotatably mounted with a support seat 613 via a pin. It should be noted that each set of rotating shafts 612 is fixedly equipped with a rotating cap 614 for manual rotation at its top. By manually rotating the rotating cap 614, the rotating shaft 612 can be driven to rise and fall, thereby adjusting the height of the support base 613 and achieving the final horizontal leveling of the equipment and self-adaptation to the ground. At the same time, by increasing the contact area and friction between the support base 613 and the ground, the measurement benchmark is ensured to be stable, thereby improving the measurement accuracy of the surrounding rock deformation data and effectively avoiding calculation errors caused by equipment tilt.

[0023] Please see Figure 4 , Figure 5 The base 601 and the detector 1 are fixedly connected by a connecting component 5. The connecting component 5 includes a plug 501 and a socket 502. The plug 501 is fixedly installed on the bottom surface of the detector 1 by bolts, and the socket 502 is fixedly installed on the top surface of the base 601 by bolts. The inner cavity of the socket 502 is provided with a slot 503 that is adapted to the plug 501, and the plug 501 is embedded in the slot 503 to achieve initial positioning. It should be noted that the inner walls on both sides of the slot 503 are provided with inclined guide surfaces, which can provide automatic guidance and position correction during the insertion of the insert block 501 into the slot 503, ensuring that the two are tightly connected, effectively reducing gap shaking, enhancing the overall stability of the structural connection, and avoiding connection loosening caused by external environmental factors such as underground vibration. The inner cavity of the socket 502 is provided with a moving groove 504, and an unlocking block 505 is slidably installed in the moving groove 504. A locking block 506 is fixedly installed on the top surface of the unlocking block 505, and the locking block 506 passes through the moving groove 504 and the slot 503 in sequence and is engaged with the plug 501. One end of the unlocking block 505 protrudes out of the socket 502, and its other end is fixedly connected to the inner wall of the socket 502 through a thrust spring 507. It should be noted that the insert block 501 has a slot 508 inside, and the locking block 506 is embedded in the slot 508. The continuous elastic preload provided by the thrust spring 507 keeps the unlocking block 505 in an outward convex state, thereby driving the locking block 506 to always be tightly fitted in the slot 508, ensuring that the connecting component 5 is in a stable mechanical locking state. This can effectively counteract the vibration during operation and ensure that the detector 1 remains stable and reliable on the support system. At the same time, the mechanical lock can be quickly released by pressing the outward convex unlocking block 505, so as to realize the quick replacement and storage between the detector 1 and the support component 6 while ensuring the connection strength.

[0024] Please see Figure 4 The detector 1 has a display screen 3 and two sets of control buttons 4 fixedly installed on one side, and the two sets of control buttons 4 are located on both sides of the display screen 3, which are used to realize human-computer interaction and data access.

[0025] The working principle of this utility model is as follows: When this utility model is used, it first captures images of the surrounding rock in a complex underground environment by using infrared cameras 2 and infrared light source emission modules installed symmetrically at both ends. The image processing system uses the disparity matching algorithm of binocular stereo vision (its theoretical basis is based on the binocular stereo vision modeling method in "Computer Vision: Algorithms and Applications", and meets the technical requirements for non-contact observation in the "Coal Mine Pressure Manifestation Observation Specification". By combining the above mature theory with the application scenario of mine measurement, it realizes the digital calculation of the displacement of the surrounding rock). According to the preset camera baseline distance and focal length, it calculates the coordinates of the surrounding rock measuring points through a triangulation model, and calculates the spatial displacement vector using the surrounding rock point cloud data acquired at different times, thereby realizing the quantitative analysis and evaluation of the deformation trend of the surrounding rock (this technical path transforms the physical deformation process of the surrounding rock into a digital expression of spatial displacement, which is the core means of "digital twin" technology in current geological exploration and tunnel construction, effectively improving the accuracy and reliability of monitoring data). Human-computer interaction is completed through the display screen 3 and control buttons 4. Secondly, to solve the shaking error caused by traditional manual holding, the rotating drive ring 607 drives the moving disk 605 to move along the threaded rod 602. The auxiliary rod 606 pushes the three sets of support rods 604 to expand or retract synchronously. The connecting disk 608, the fixed tube 609 and the connecting rod 610 work together to enhance the overall rigidity. In addition, the height of the support base 613 can be finely adjusted by manually rotating the rotating cap 614 to drive the rotating shaft 612 to rise and fall. This allows for horizontal leveling and adaptive balance on the rugged roadway surface, ensuring the stability of the monitoring benchmark. Finally, the connection component 5 enables convenient assembly and disassembly between the detector 1 and the support rod 604. When the plug 501 is inserted into the slot 503 of the socket 502, the inclined guide surface guides it to automatically correct its position, and the continuous pre-tightening force provided by the thrust spring 507 drives the locking block 506 to automatically engage with the slot 508 inside the plug 501, achieving mechanical locking. This effectively resists vibration during operation and prevents the connection from loosening. When it is necessary to replace or store the equipment, the locking can be quickly released by pressing the unlocking block 505, effectively improving the flexibility and safety of on-site operations.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tunnel surrounding rock stability testing device, comprising a testing instrument (1), characterized in that, The detector (1) is symmetrically fixed with infrared cameras (2) at both ends, and each infrared camera (2) is fixed with an infrared light source emitting module on its outer side. The bottom surface of the detector (1) is fixedly equipped with a support assembly (6). The support assembly (6) includes a base (601). The base (601) is installed below the detector (1). A threaded rod (602) is fixedly installed on the bottom surface of the base (601). A connecting cylinder (603) is fixedly sleeved at the bottom end of the threaded rod (602). Three sets of support rods (604) are symmetrically rotatably connected to the outside of the connecting cylinder (603).

2. The tunnel surrounding rock stability detection device according to claim 1, characterized in that, A movable disk (605) is slidably sleeved on the outer side of the threaded rod (602). Three sets of auxiliary rods (606) are symmetrically and rotatably installed on the bottom surface of the movable disk (605). The bottom end of each set of auxiliary rods (606) is hinged to the outer side of the corresponding support rod (604). A drive ring (607) is rotatably installed on the top surface of the movable disk (605), and the drive ring (607) is threadedly sleeved on the threaded rod (602).

3. The tunnel surrounding rock stability detection device according to claim 2, characterized in that, Each set of support rods (604) has a connector (611) rotatably installed at its bottom end. Each set of connectors (611) has a rotating shaft (612) threaded into its interior. The bottom end of each set of rotating shafts (612) passes through the corresponding connector (611) and is rotatably installed with a support base (613).

4. The tunnel surrounding rock stability detection device according to claim 1, characterized in that, The base (601) and the detector (1) are fixedly connected by a connecting component (5). The connecting component (5) includes a plug (501) and a socket (502). The plug (501) is fixedly installed on the bottom surface of the detector (1), and the socket (502) is fixedly installed on the top surface of the base (601). The socket (502) has a slot (503) in its inner cavity, and the plug (501) is embedded in the slot (503).

5. The tunnel surrounding rock stability detection device according to claim 4, characterized in that, The socket (502) has a moving groove (504) in its inner cavity, and an unlocking block (505) is slidably installed in the moving groove (504). A locking block (506) is fixedly installed on the top surface of the unlocking block (505), and the locking block (506) passes through the moving groove (504) and the slot (503) in sequence and is engaged with the plug (501). One end of the unlocking block (505) protrudes out of the socket (502), and its other end is fixedly connected to the inner wall of the socket (502) through a thrust spring (507).

6. The tunnel surrounding rock stability detection device according to claim 1, characterized in that, The detector (1) has a display screen (3) and two sets of control buttons (4) fixedly installed on one side, and the two sets of control buttons (4) are located on both sides of the display screen (3).

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