A tunnel surrounding rock disturbance blasting monitoring device

Abstract

The utility model discloses a tunnel surrounding rock disturbance blasting monitoring devices, including base, the base top is installed with the protective housing, the protective housing side fixedly connected with the sliding groove, the sliding groove side is installed with the side frame, and the side frame fixedly connected with the firm board, and the firm board rotationally connected with the disc, and the disc eccentricity is provided with the column, and the firm board fixed mounting has the support frame, and the support frame slidingly connected with the sliding rod, and the sliding rod side is provided with the cleaning brush for cleaning the sliding track, through the optimization design, such as filter plate self -cleaning mechanism, the reinforced heat dissipation channel can effectively avoid the dust accumulation caused by the ventilation obstruction, ensure equipment internal heat in time discharge, maintain the capacitor, resistance, sensor interval in the safe working temperature region. This improvement can significantly slow down the element aging rate, reduce the sensor accuracy drift, data acquisition interruption and other faults caused by high temperature, fundamentally prolong the overall service life of monitoring equipment, reduce equipment replacement frequency and cost.

Description

Technical Field

[0001] This utility model relates to the field of tunnel surrounding rock blasting monitoring technology, and in particular to a tunnel surrounding rock disturbance blasting monitoring device. Background Technology

[0002] In tunnel construction projects in transportation, water conservancy, energy and other fields, blasting is the core means of breaking hard surrounding rock and excavating tunnels. However, the instantaneous shock waves and vibration loads generated by blasting can disturb the surrounding rock of the tunnel, which may cause the expansion of rock fissures, displacement exceeding limits or even collapse. At the same time, it may also affect the safety of the tunnel lining structure and adjacent existing buildings. Therefore, monitoring the state of the surrounding rock under blasting disturbance has become a key link in the safety management and refined construction of tunnels.

[0003] However, during the monitoring of blasting disturbance in tunnel surrounding rock, the large amount of rock dust and secondary dust generated by blasting operations inside the tunnel will keep the environmental dust concentration at a high level for a long time. In order to protect the core components of the monitoring equipment, existing equipment is usually equipped with a protective shell to isolate dust intrusion. However, this design is prone to new technical contradictions. The filter plate on the protective shell used for ventilation and heat dissipation will be blocked due to the rapid accumulation of high concentration dust, resulting in heat accumulation inside the equipment. Long-term exposure to high temperature conditions will not only accelerate the aging process of components such as capacitors and resistors, but may also cause sensor accuracy drift, data acquisition interruption, and ultimately significantly shorten the service life of the monitoring equipment. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of the existing technology mentioned above, and to propose a tunnel surrounding rock disturbance blasting monitoring device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A tunnel surrounding rock disturbance blasting monitoring device includes a base, a protective shell mounted on top of the base, a sliding groove fixedly connected to the side of the protective shell, a side frame mounted on the side of the sliding groove, a stabilizing plate fixedly connected to the side frame, a disc rotatably connected to the stabilizing plate, a protruding post eccentrically arranged on the disc, a support frame fixedly mounted on the stabilizing plate, a sliding rod slidably connected to the support frame, a cleaning brush for cleaning the sliding track provided on the side of the sliding rod, an elliptical ring fixedly connected to the end of the sliding rod away from the cleaning brush, a rotating rod fixedly connected to the disc, a blade drivenly connected to the rotating rod, and a pressing mechanism for quickly changing the sliding track provided on the side of the sliding groove.

[0006] The above technical solution further includes: The extrusion mechanism includes an L-shaped mounting block disposed on the side of the protective shell, an extrusion rod slidably connected to the L-shaped mounting block, a fixing plate fixedly connected to the surface of the extrusion rod, a spring fixedly connected to one side of the fixing plate, the spring being sleeved on the surface of the extrusion rod, and sliding grooves symmetrically disposed on the side of the protective shell, the sliding grooves being slidably connected to the sliding track.

[0007] The disc is driven by a first belt, and a rotating rod is driven by the end of the first belt away from the disc. The rotating rod is rotatably connected to the side frame. The rotating rod is driven by a second belt, and a blade is driven by the side of the second belt away from the rotating rod. The blade is rotatably connected to a connecting plate, and the connecting plate is fixed inside the protective shell.

[0008] A cylinder is installed above the protective shell, and a cutting rod is fixedly connected to the output end of the cylinder. The cutting rod passes through the protective shell and is slidably connected to the cutting rod.

[0009] This design achieves mechanized and precise driving of the cutting rod, which has significant advantages over manual insertion: Firstly, the stable output force of the cylinder ensures that the cutting rod is inserted into the pre-drilled surrounding rock hole with uniform force, avoiding the problem of uneven force during manual operation that causes the cutting rod to bend and deform, or poor fit with the inner wall of the hole, thus ensuring effective coupling between the cutting rod and the surrounding rock.

[0010] The base is equipped with an adhesive spray box at the bottom, which is used to fill the gap between the cutting rod and the hole.

[0011] The adhesive spray box directly solves the problem of monitoring data distortion caused by the gap between the cutting rod and the hole. By filling the gap with adhesive, the cutting rod and the surrounding rock can be rigidly coupled, avoiding relative displacement between the two due to the gap during blasting disturbance, and ensuring that the vibration, stress and other signals of the surrounding rock obtained by the sensor through the cutting rod are true and without attenuation.

[0012] A centralized monitoring block is installed inside the protective shell.

[0013] The integrated design of the centralized monitoring block optimizes the structure and data processing efficiency of the device. Firstly, by concentrating vibration, displacement and other monitoring modules and data processing units in the monitoring block, the scattered layout between various components can be reduced, the overall volume of the protective shell can be reduced, and it is more suitable for the narrow installation space of tunnels.

[0014] The base is equipped with multiple sets of support legs for cushioning.

[0015] The cushioning design of the support legs provides multiple protections for the device. First, during tunnel blasting operations, the support legs can absorb some of the vibration energy transmitted to the base by the blast shock wave, preventing the violent vibration from being directly transmitted to the monitoring components inside the protective shell, such as the centralized monitoring block and sensors, thus preventing the components from being damaged by vibration or the parameters from drifting, and ensuring the accuracy of the monitoring data.

[0016] The protective shell is equipped with a lifting strap.

[0017] The installation strap significantly improves the ease of installation and maintenance of the device. On the one hand, the construction space inside the tunnel is limited, and the device needs to be precisely installed in specific locations such as near the working face. The installation strap makes it easier for workers to carry and move the device by hand.

[0018] This utility model has the following beneficial effects: In this invention, through optimized design, such as a self-cleaning filter plate mechanism and enhanced heat dissipation channels, ventilation obstruction caused by dust accumulation can be effectively avoided, ensuring timely heat dissipation from the equipment and maintaining capacitors, resistors, and sensors within a safe operating temperature range. This improvement significantly slows down the aging rate of components, reduces faults such as sensor accuracy drift and data acquisition interruption caused by high temperatures, fundamentally extending the overall service life of the monitoring equipment and reducing equipment replacement frequency and costs.

[0019] In this invention, heat accumulation caused by filter plate blockage directly leads to abnormal sensor parameters and data distortion, while also increasing the probability of equipment downtime for maintenance and affecting the continuity of monitoring work. After resolving this technical contradiction, the equipment can maintain stable heat dissipation efficiency and good working condition in dusty environments. This not only ensures the accuracy of core monitoring data such as vibration and displacement, avoiding misleading adjustments to blasting plans or judgments of surrounding rock stability due to data deviations, but also reduces monitoring interruptions caused by equipment failures. It enables continuous tracking of tunnel surrounding rock blasting disturbances throughout the entire process, providing reliable data support for construction safety risk early warning and support decision-making. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a tunnel surrounding rock disturbance blasting monitoring device proposed in this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram of the internal structure of this utility model; Figure 4 This is a schematic diagram of the upward-looking mechanism in this utility model; Figure 5 This is a partial structural diagram of the present invention.

[0021] In the diagram: 1. Base; 2. Protective shell; 3. Sliding groove; 4. Sliding track; 5. L-shaped mounting block; 6. Extrusion rod; 7. Spring; 8. Fixing plate; 9. Cylinder; 10. Insertion rod; 11. Adhesive spray box; 12. Support leg; 13. Central monitoring block; 14. Side frame; 15. Stabilizing plate; 16. Disc; 17. Protruding column; 18. Elliptical ring; 19. Sliding rod; 20. Support frame; 21. Cleaning brush; 22. First belt; 23. Rotating rod; 24. Second belt; 25. Connecting plate; 26. Blade. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-5 As shown, this utility model is a tunnel surrounding rock disturbance blasting monitoring device, including a base 1, a protective shell 2 installed on the top of the base 1, a sliding groove 3 fixedly connected to the side of the protective shell 2, a side frame 14 installed on the side of the sliding groove 3, a stabilizing plate 15 fixedly connected to the side frame 14, a disc 16 rotatably connected to the stabilizing plate 15, a protruding post 17 eccentrically provided on the disc 16, a support frame 20 fixedly installed on the stabilizing plate 15, a sliding rod 19 slidably connected to the support frame 20, a cleaning brush 21 for cleaning the sliding track 4 provided on the side of the sliding rod 19, an elliptical ring 18 fixedly connected to the end of the sliding rod 19 away from the cleaning brush 21, a rotating rod 23 fixedly connected to the disc 16, a blade 26 being drivenly connected to the rotating rod 23, and a pressing mechanism for quickly replacing the sliding track 4 provided on the side of the sliding groove 3.

[0024] In one embodiment, the extrusion mechanism includes an L-shaped mounting block 5 disposed on the side of the protective shell 2, an extrusion rod 6 slidably connected to the L-shaped mounting block 5, a fixing plate 8 fixedly connected to the surface of the extrusion rod 6, a spring 7 fixedly connected to one side of the fixing plate 8, the spring 7 being sleeved on the surface of the extrusion rod 6, and sliding grooves 3 symmetrically disposed on the side of the protective shell 2, the sliding grooves 3 being slidably connected to the sliding track 4.

[0025] In one embodiment, for the aforementioned disc 16, the disc 16 is driven by a first belt 22, and the end of the first belt 22 away from the disc 16 is driven by a rotating rod 23. The rotating rod 23 is rotatably connected to the side frame 14. The rotating rod 23 is driven by a second belt 24, and the side of the second belt 24 away from the rotating rod 23 is driven by a blade 26. The blade 26 is rotatably connected to a connecting plate 25, and the connecting plate 25 is fixed inside the protective shell 2.

[0026] In one embodiment, for the protective shell 2, a cylinder 9 is provided on the top of the protective shell 2, and a cutting rod 10 is fixedly connected to the output end of the cylinder 9. The cutting rod 10 passes through the protective shell 2 and is slidably connected to it.

[0027] In this embodiment, the design achieves mechanized and precise driving of the insertion rod 10, which has significant advantages compared to manual insertion. On the one hand, the stable output force of the cylinder 9 can ensure that the insertion rod 10 is inserted into the pre-drilled surrounding rock hole with uniform force, avoiding the problem of uneven force during manual operation that causes the insertion rod 10 to bend and deform, or poor fit with the inner wall of the hole, thus ensuring effective coupling between the insertion rod 10 and the surrounding rock.

[0028] In one embodiment, for the base 1, an adhesive spray box 11 is provided at the bottom of the base 1. The adhesive spray box 11 is used to fill the gap between the cutting rod 10 and the hole.

[0029] In this embodiment, the setting of the adhesive spray box 11 directly solves the problem of monitoring data distortion caused by the gap between the cutting rod 10 and the hole. By filling the gap with adhesive, the cutting rod 10 can form a rigid coupling with the surrounding rock, avoiding relative displacement between the two due to the gap during blasting disturbance, and ensuring that the surrounding rock vibration, stress and other signals obtained by the sensor through the cutting rod 10 are true and without attenuation.

[0030] In one embodiment, the protective shell 2 is equipped with a centralized monitoring block 13.

[0031] In this embodiment, the integrated design of the centralized monitoring block 13 optimizes the structure and data processing efficiency of the device. Firstly, by concentrating the vibration, displacement and other monitoring modules and data processing units in the monitoring block 13, the scattered layout between various components can be reduced, the overall volume of the protective shell 2 can be reduced, and it is more suitable for the narrow installation space of the tunnel.

[0032] In one embodiment, the base 1 described above has multiple sets of support legs 12 for cushioning at its bottom.

[0033] In this embodiment, the buffer design of the support leg 12 provides multiple protections for the device. First, during tunnel blasting operations, the support leg 12 can absorb some of the vibration energy transmitted to the base 1 by the blasting shock wave, preventing the violent vibration from being directly transmitted to the monitoring components inside the protective shell 2, such as the centralized monitoring block 13 and sensors, preventing the components from being damaged by vibration or the parameters from drifting, and ensuring the accuracy of the monitoring data.

[0034] In one embodiment, the protective shell 2 is provided with a lifting strap on its top.

[0035] In this embodiment, the installation belt significantly improves the ease of installation and maintenance of the device. On the one hand, the construction space inside the tunnel is limited, and the device needs to be precisely installed in specific locations such as near the working face. The installation belt makes it easier for workers to carry and move the device by hand.

[0036] The working principle of the tunnel surrounding rock disturbance blasting monitoring device of this utility model is as follows: First, a hole is drilled in the surrounding rock of the tunnel. Then, the base 1 is moved above the hole so that the insertion rod 10 at its bottom is aligned. Then, the cylinder 9 is controlled to output, and the cylinder 9 pushes the insertion rod 10 into the pre-drilled hole. Subsequently, the adhesive spray box 11 is pushed, and the adhesive spray box 11 injects the adhesive along the insertion rod 10 into the pre-drilled hole. Then, the base 1 is moved back and forth, so that the adhesive spray box 11... The pre-drilled holes and the insertion rod 10 are filled as completely as possible to ensure more accurate subsequent monitoring data. Monitoring of tunnel surrounding rock disturbance blasting then begins. During and after the blasting process, the tunnel generates a large amount of dust. A temperature sensor is installed inside the protective shell 2. When the temperature exceeds a predetermined value, such as 40 degrees Celsius, the disc 16 is controlled to rotate. The disc 16 then drives the protruding post 17 in an eccentric circular motion. The protruding post 17 then slides inside the elliptical ring 18, and the disc 16 then... Figure 5 The device moves back and forth as shown, using the cleaning brush 21 to clean the surface of the sliding track 4, thereby facilitating the heat dissipation of the core processor of the monitoring device. At the same time, when the disc 16 rotates, it will drive the rotating rod 23 to rotate. The rotation of the rotating rod 23 will drive the blade 26 to rotate via the second belt 24. The blade 26 will accelerate the heat inside the protective shell 2 to the outside of the protective shell 2, thereby preventing the temperature inside the protective shell 2 from being too high and affecting subsequent monitoring work.

[0037] In addition, a sliding groove 3 is provided on the side of the protective shell 2, and a sliding rail 4 is slidably connected to the sliding groove 3. When the sliding rail 4 needs to be replaced, the squeezing rod 6 is pulled, and the squeezing rod 6 will drive the fixing plate 8 to squeeze the spring 7. At this time, the squeezing rod 6 does not exert squeezing force on the sliding rail 4, thereby replacing the new sliding rail 4. When the new sliding rail 4 is installed, the squeezing rod 6 is released, the spring 7 will release elastic potential energy, and then the spring 7 will push the fixing plate 8 to move. The fixing plate 8 will drive the squeezing rod 6 to squeeze the sliding rail 4, thereby enabling the sliding rail 4 to perform filtering work.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A monitoring device for blasting disturbance of surrounding rock in tunnels, characterized in that, Includes a base (1), a protective shell (2) is installed on the top of the base (1), a sliding groove (3) is fixedly connected to the side of the protective shell (2), a side frame (14) is installed on the side of the sliding groove (3), a stabilizing plate (15) is fixedly connected to the side frame (14), a disc (16) is rotatably connected to the stabilizing plate (15), a protruding post (17) is eccentrically provided on the disc (16), a support frame (20) is fixedly installed on the stabilizing plate (15), a sliding rod (19) is slidably connected to the support frame (20), a cleaning brush (21) for cleaning the sliding track (4) is provided on the side of the sliding rod (19), an elliptical ring (18) is fixedly connected to the end of the sliding rod (19) away from the cleaning brush (21), a rotating rod (23) is fixedly connected to the disc (16), a blade (26) is drivenly connected to the rotating rod (23), and a squeezing mechanism for quickly changing the sliding track (4) is provided on the side of the sliding groove (3).

2. The tunnel surrounding rock disturbance blasting monitoring device according to claim 1, characterized in that, The extrusion mechanism includes an L-shaped mounting block (5) disposed on the side of the protective shell (2), an extrusion rod (6) is slidably connected to the L-shaped mounting block (5), a fixing plate (8) is fixedly connected to the surface of the extrusion rod (6), a spring (7) is fixedly connected to one side of the fixing plate (8), the spring (7) is sleeved on the surface of the extrusion rod (6), and sliding grooves (3) are symmetrically arranged on the side of the protective shell (2), and the sliding grooves (3) are slidably connected to the sliding track (4).

3. The tunnel surrounding rock disturbance blasting monitoring device according to claim 1, characterized in that, The disc (16) is driven by a first belt (22), and a rotating rod (23) is driven by one end of the first belt (22) away from the disc (16). The rotating rod (23) is rotatably connected to the side frame (14). The rotating rod (23) is driven by a second belt (24), and a blade (26) is driven by one side of the second belt (24) away from the rotating rod (23). The blade (26) is rotatably connected to the connecting plate (25), and the connecting plate (25) is fixed inside the protective shell (2).

4. The tunnel surrounding rock disturbance blasting monitoring device according to claim 1, characterized in that, A cylinder (9) is provided above the protective shell (2). A cutting rod (10) is fixedly connected to the output end of the cylinder (9). The cutting rod (10) passes through the protective shell (2) and is slidably connected to the cutting rod (10).

5. The tunnel surrounding rock disturbance blasting monitoring device according to claim 1, characterized in that, The base (1) is provided with an adhesive spray box (11) at the bottom, which is used to fill the gap between the cutting rod (10) and the hole.

6. The tunnel surrounding rock disturbance blasting monitoring device according to claim 1, characterized in that, The protective shell (2) is equipped with a centralized monitoring block (13).

7. The tunnel surrounding rock disturbance blasting monitoring device according to claim 2, characterized in that, The base (1) has multiple sets of support legs (12) for cushioning at its bottom.

8. The tunnel surrounding rock disturbance blasting monitoring device according to claim 1, characterized in that, The protective shell (2) is equipped with a lifting strap on its upper part.

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