High-ground-pressure soft rock roadway surrounding rock structure stress detection device

Abstract

The utility model provides a high-earth-pressure soft rock roadway surrounding rock structure stress detection device, which belongs to the field of high-earth-pressure soft rock roadway surrounding rock structure stress detection, and is characterized by comprising a receiving transducer and a transmitting transducer, the measuring pipe is respectively connected with the receiving transducer and the transmitting transducer; the connecting assembly comprises a male connecting sleeve and a female connecting sleeve, and the male connecting sleeve is in threaded connection with the interior of the female connecting sleeve. According to the utility model, through the arrangement of the connecting assembly, the measuring pipe and the connecting mechanism for the measuring pipe can be detachably connected with the measuring pipe, and on the basis of ensuring the normal connection of the measuring pipe, after the connecting assembly is damaged or the service life reaches the age limit, the whole connecting assembly can be taken down from the measuring pipe, and a new connecting assembly is replaced to be connected with the measuring pipe; therefore, the measuring pipe does not need to be replaced during maintenance, replacement cost is effectively reduced, and waste of the intact measuring pipe is avoided.

Description

Technical Field

[0001] This utility model relates to stress detection technology for the surrounding rock structure of soft rock tunnels under high ground pressure, specifically a stress detection device for the surrounding rock structure of soft rock tunnels under high ground pressure. Background Technology

[0002] With the increasing demand for resources, many mines in China have entered a deep mining phase. After entering deep mining, the surrounding rock of the tunnels exhibits increased ground stress, intensified deformation and damage, and greater maintenance difficulties, posing significant threats and hidden dangers to the safety of actual tunnel construction. Therefore, a stress detection device is needed to detect the internal stress of the surrounding rock structure in high-pressure soft rock tunnels.

[0003] Currently, ultrasonic rock fracture detectors are commonly used to detect internal stress in the ground. During the detection process, to extend the detection depth, multiple probes are often connected to increase the overall length. These probes are typically connected by threads. Some probes employ more complex disassembly and assembly mechanisms to improve efficiency; however, these mechanisms are often integrated with the probe body. When the threads fail or internal parts are damaged, the entire probe needs to be replaced, even if the probe itself is not faulty. This results in high replacement costs and waste during maintenance. Therefore, we propose a stress detection device for surrounding rock structures in high-pressure soft rock tunnels to address the aforementioned problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a stress detection device for the surrounding rock structure of soft rock tunnels under high ground pressure, in order to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solution: including a receiving transducer and a transmitting transducer;

[0006] The measuring tube is connected to both the receiving transducer and the transmitting transducer.

[0007] A connecting assembly includes a male connecting sleeve and a female connecting sleeve. The male connecting sleeve is threaded into the female connecting sleeve. Both the male and female connecting sleeves have mounting cavities. Locking rings are rotatably connected to the distal ends of both the male and female connecting sleeves. Several rotating rods are distributed in a circular pattern within the mounting cavities. First gears are symmetrically fixed along the outer edge of each rotating rod. A toothed plate is slidably arranged in a circular pattern on the inner wall of the mounting cavity. The toothed plate meshes with adjacent first gears. Adjacent ends of the measuring tube have circular slots. A second gear is fixedly connected to one end of each rotating rod. A toothed ring is fixedly connected inside the locking ring. The toothed ring meshes with multiple adjacent second gears. A damping rod is threaded onto the toothed ring. One end of the toothed plate is inserted into an adjacent slot.

[0008] Preferably, both the receiving transducer and the transmitting transducer are electrically connected to the detector body via wires.

[0009] Preferably, a damping ring is fixedly connected to one end of the measuring tube near the slot, and the damping ring and the locking ring are interference fit.

[0010] Preferably, both the male and female connecting sleeves are welded together from two halves, with the slot located on one half.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] By using the connection components, the connection mechanism between the test tubes can be detachably connected to the test tubes. While ensuring that the test tubes can be connected normally, the connection components can be completely removed from the test tubes after they are damaged or reach the end of their service life, and a new connection component can be replaced to connect to the test tubes. This eliminates the need to replace the test tubes during maintenance, effectively reducing replacement costs and avoiding waste of intact test tubes. Attached Figure Description

[0013] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 This is a partial three-dimensional sectional view of the present invention;

[0016] Figure 3 yes Figure 2 An enlarged schematic diagram of part A is shown below;

[0017] Figure 4 This is a three-dimensional enlarged schematic diagram of the locking ring structure in this utility model.

[0018] In the diagram: 1. Receiving transducer; 2. Transmitting transducer; 3. Measuring tube; 4. Male connecting sleeve; 5. Female connecting sleeve; 6. Mounting cavity; 7. Locking ring; 8. Rotating rod; 9. First gear; 10. Gear plate; 11. Slot; 12. Second gear; 13. Gear ring; 14. Damping rod; 15. Damping ring. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Please see Figures 1-4 As shown, a stress detection device for the surrounding rock structure of a soft rock tunnel under high ground pressure includes a receiving transducer 1 and a transmitting transducer 2.

[0021] Test tube 3 is connected to receiving transducer 1 and transmitting transducer 2 respectively;

[0022] The connecting assembly includes a male connecting sleeve 4 and a female connecting sleeve 5. The male connecting sleeve 4 is threaded into the female connecting sleeve 5. Both the male connecting sleeve 4 and the female connecting sleeve 5 are provided with mounting cavities 6. Locking rings 7 are rotatably connected to the distal ends of the male connecting sleeve 4 and the female connecting sleeve 5. Several rotating rods 8 are distributed in a circular pattern in the mounting cavity 6. A first gear 9 is symmetrically fixed along the outer edge of the rotating rod 8. A toothed plate 10 is slidably arranged in a circular pattern on the inner wall of the mounting cavity 6. The toothed plate 10 meshes with the adjacent first gear 9. The adjacent ends of the measuring tube 3 are provided with circular slots 11. A second gear 12 is fixedly connected to one end of the rotating rod 8. A toothed ring 13 is fixedly connected inside the locking ring 7. The toothed ring 13 meshes with multiple adjacent second gears 12. A damping rod 14 is threadedly connected to the toothed ring 13. One end of the toothed plate 10 is inserted into the adjacent slot 11.

[0023] It should be noted that the threaded connection between the female connecting sleeve 5 and the male connecting sleeve 4 can effectively reduce the connection cost. The mounting cavity 6 is used to install the connecting components. The locking ring 7 is used to drive multiple second gears 12 to rotate simultaneously through its upper gear ring 13. The first gear 9 is driven by the rotating rod 8 to mesh with the adjacent gear plate 10 and move the gear plate 10 so that the gear plate 10 can be inserted into or separated from the slot 11. The damping rod 14 is used to rotate when needed, and the threaded engagement between it and the locking ring 7 makes one end abut against the surface of the adjacent connecting sleeve, increasing the rotational resistance of the locking ring 7 and limiting the locking ring 7 to stay in the current position. Through the set connecting components, the connecting mechanism between the measuring tube 3 and the measuring tube 3 can be detachably connected. On the basis of ensuring that the measuring tube 3 can be connected normally, the connecting components can be removed from the measuring tube 3 as a whole after damage or reaching the end of their service life, and a new connecting component can be replaced to connect to the measuring tube 3. In this way, the measuring tube 3 does not need to be replaced during maintenance, effectively reducing replacement costs and avoiding waste of intact measuring tubes 3.

[0024] In this embodiment, both the receiving transducer 1 and the transmitting transducer 2 are electrically connected to the main body of the detector via wires. The data transmitted by the two transducers is sent to the detector for data analysis, which can determine the internal stress distribution of the surrounding rock structure in the high-pressure soft rock tunnel.

[0025] In this embodiment, a damping ring 15 is fixedly connected to one end of the measuring tube 3 near the slot 11. The damping ring 15 and the locking ring 7 are interference fit. The fit between the damping ring 15 and the locking ring 7 can increase the friction required for the natural rotation of the locking ring 7, and further ensure the stability of the locking ring 7 after it is fixed.

[0026] In this embodiment, both the male connecting sleeve 4 and the female connecting sleeve 5 are welded together from two halves, with the slot 11 located on one half. The male connecting sleeve 4 and the female connecting sleeve 5 are designed as separate units, which facilitates the installation of internal structures and allows for sealing after installation, thus simplifying the assembly process.

[0027] In specific implementation of this utility model:

[0028] Drill holes with a diameter of 41-45mm into the rock wall. The depth is determined based on the estimated range of the loosened zone (usually 3-30m). It is recommended to drill the holes on both sides of the tunnel and tilt them downwards at 3-5° to facilitate water retention. Afterwards, use a hole-cleaning tool to remove rock powder and gravel from the hole to ensure that the probe can reach the bottom of the hole smoothly. Then, send the probe (consisting of transmitting transducer 2 and receiving transducer 1) to the bottom of the hole through the probe tube 3. Set a graduated groove every 10cm. Extend the length of the probe tube 3 by threaded connection. When connecting the probe tube 3, simply align the male connector 4 with the female connector 4. The connecting sleeves 5 are rotated to make them threadedly connected and fixed. When one of the connecting sleeves is damaged and needs to be replaced, the damping rod 14 is rotated outward so that one end is no longer in contact with the surface of the connecting sleeve. Then, the locking ring 7 on the connecting sleeve is rotated, and the upper gear ring 13 meshes with the second gear 12 to drive multiple rotating rods 8 to rotate. The rotating rods 8 drive the first gear 9 to rotate, and the first gear 9 meshes with the toothed plate 10 to drive the toothed plate 10 to move out of the adjacent slot 11. Then, the connecting sleeve is pulled to one side to complete the disassembly of the connecting sleeve and the measuring tube 3.

[0029] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A stress detection device for the surrounding rock structure of a high-pressure soft rock tunnel, characterized in that, include A receiving transducer (1) and a transmitting transducer (2); The measuring tube (3) is connected to the receiving transducer (1) and the transmitting transducer (2) respectively; The connecting assembly includes a male connecting sleeve (4) and a female connecting sleeve (5). The male connecting sleeve (4) is threaded into the female connecting sleeve (5). Both the male connecting sleeve (4) and the female connecting sleeve (5) are provided with mounting cavities (6). Locking rings (7) are rotatably connected to the distal ends of both the male connecting sleeve (4) and the female connecting sleeve (5). Several rotating rods (8) are arranged in a circular pattern inside the mounting cavity (6). A first gear (9) is symmetrically fixed along the axial direction on the outer side of each rotating rod (8). The inner wall of the mounting cavity (6) is circular. A toothed plate (10) is provided in a sliding configuration. The toothed plate (10) meshes with an adjacent first gear (9). The adjacent ends of the measuring tube (3) are provided with slots (11) in a circular shape. One end of the rotating rod (8) is fixedly connected to a second gear (12). A gear ring (13) is fixedly connected inside the locking ring (7). The gear ring (13) meshes with multiple adjacent second gears (12). A damping rod (14) is threaded onto the gear ring (13). One end of the toothed plate (10) is inserted into an adjacent slot (11).

2. The stress detection device for the surrounding rock structure of a high-pressure soft rock tunnel according to claim 1, characterized in that, The receiving transducer (1) and the transmitting transducer (2) are both electrically connected to the detector body via wires.

3. The stress detection device for the surrounding rock structure of a high-pressure soft rock tunnel according to claim 2, characterized in that, A damping ring (15) is fixedly connected to one end of the measuring tube (3) near the slot (11), and the damping ring (15) and the locking ring (7) are interference fit.

4. The stress detection device for the surrounding rock structure of a high-pressure soft rock tunnel according to claim 3, characterized in that, Both the male connecting sleeve (4) and the female connecting sleeve (5) are made of two halves welded together, with the slot (11) located on one half.

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