Simple device for tunnel blasting vibration test
By introducing fixed shock absorbing base, horizontal shock absorbing assembly and adjustable bracket into the blasting vibration test device, the problem that traditional devices cannot be suitable for slopes and unabsorbed is solved, and the blasting vibration is accurately monitored on multi-angle ground and improved blasting vibrations are achieved. Data accuracy.
Patent Information
- Application Number
- CN202411438328.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-01-03
AI Technical Summary
The traditional blasting vibration testing device is only suitable for horizontal ground, but not for multi-angle ground such as slopes, and has not been subjected to vibration reduction, which causes the vibration energy during tunnel blasting to affect the test device, reducing the accuracy of the data.
A simple device including a fixed shock absorbing base, horizontal shock absorbing assembly, vertical shock absorbing assembly, adjustable bracket and protective case is designed to consume vibration energy through horizontal and vertical shock absorbing assembly to ensure that the test device is not affected by vibration , and adapt to different ground angles through adjustable brackets and protective panels to protect the sensor.
It realizes accurate monitoring of blasting vibration on multiple angles of the ground, improves the accuracy of the test data and the applicability of the device, and protects the sensors to avoid damage to flying stones during blasting.
Smart Images
Figure CN119245799A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of vibration testing devices, in particular to a simple device for tunnel blasting vibration testing. Background Art
[0002] Tunnel blasting is used to efficiently and economically excavate and advance underground spaces such as mines, tunnels, and underground facilities. Through controlled blasting, rocks can be broken, spaces can be expanded, rock stability can be improved, and construction efficiency can be increased. Therefore, blasting projects require precise design and strict safety measures to ensure the safety of operations and minimize impact on the environment. The application of vibration testing devices in tunnel blasting is crucial. It ensures blasting safety by monitoring vibration intensity in real time to prevent harm to construction workers and the surrounding environment. In addition, the data collected by these devices are of great value in evaluating blasting effects, optimizing blasting designs, reducing damage to surrounding buildings and infrastructure, and promoting the research and development of blasting technology.
[0003] The tunnel blasting vibration test device is used to monitor and evaluate the vibration generated by the blasting operation, ensure that the vibration level is within a safe range, and prevent damage to the surrounding structures and environment. These devices help optimize the blasting design by collecting data, reduce the impact on adjacent areas, and provide a scientific basis for construction safety and environmental protection. However, in the process of previous research, the focus was on the protective effect of the vibration test device, and the problem of tunnel vibration caused by tunnel blasting, which led to the vibration of the test device, affected the data accuracy of the test device, and secondly, many devices are only suitable for horizontal placement in the tunnel, but not for multiple angles such as slopes, which reduces the practicality of the device. Summary of the invention
[0004] 1. Technical issues
[0005] The present invention provides a simple device for tunnel blasting vibration testing, aiming to solve the problem that traditional blasting vibration testing devices are only suitable for horizontal ground and cannot be used for multiple angles such as slopes; secondly, the purpose is to solve the problem that traditional blasting vibration testing devices have no vibration reduction treatment, resulting in the energy brought by the shock wave during the blasting of the tunnel causing the device to vibrate, thereby driving the test device to vibrate and affecting the accuracy of the test data.
[0006] (II) Technical content
[0007] In order to solve the above technical problems, the technical solution of the present invention is: a simple device for tunnel blasting vibration testing, comprising two fixed shock-absorbing bases, each of the upper end surfaces of the fixed shock-absorbing bases is provided with a groove, a horizontal shock-absorbing assembly is provided inside the groove, a vertical shock-absorbing assembly is fixedly provided on the upper end of the horizontal shock-absorbing assembly, a fixed bracket is fixedly provided on the upper end of the vertical shock-absorbing assembly, a plurality of vertically distributed screw holes are provided on the fixed bracket, an adjustable bracket is fixedly provided on the opposite side of the two fixed brackets by bolts, a protective box is fixedly provided between the other ends of the two adjustable brackets by bolts, a vibration test assembly is fixedly provided inside the protective box, the protective box includes fixed protective plates located on all sides, and pull-out protective plates are movably connected at the upper and lower ends of the fixed protective plates.
[0008] Furthermore, the horizontal shock absorbing assembly includes a shock absorbing disc movably arranged inside the groove, a horizontal shock absorbing spring is connected around the shock absorbing disc and the inner wall of the groove, a circular retaining ring is fixedly arranged on the inner wall of the groove, and the bottom end of the shock absorbing disc extends to the bottom of the circular retaining ring and is fixedly provided with a limit plate.
[0009] Furthermore, the vertical shock absorbing assembly includes two fixed discs distributed up and down, a plurality of dampers are fixedly connected between the two fixed discs, each damper is sleeved with a vertical shock absorbing spring, the fixed disc located below is fixed on the upper end surface of the shock absorbing disc, and the fixed bracket is fixed on the upper end surface of the fixed disc located above.
[0010] Furthermore, the adjustable bracket includes bracket one and bracket two, each of which is provided with a plurality of screw holes two, bracket one and bracket two are fixedly connected by bolt three, the other end of bracket one is connected to the fixed bracket by bolts, and the other end of bracket two is fixedly connected to the protective box by bolt two.
[0011] Furthermore, connecting ear plates are fixedly provided on both left and right side surfaces of the fixed protective plate, and the connecting ear plates are fixedly connected to two ends of the bracket by bolts 2.
[0012] Furthermore, the vibration test assembly includes a placement tray fixedly arranged inside the fixed protective plate, a blasting vibrometer is fixedly arranged on the placement tray, and a vibration sensor is connected to the input end of the blasting vibrometer via a sensor connecting line.
[0013] Furthermore, a buckle for fixing and connecting the sensor connecting line is fixedly provided on the inner wall of the fixed protective plate near the bottom.
[0014] (III) Technical Effect
[0015] Compared with the prior art, the advantages of the present invention are as follows: the present invention consumes horizontal and vertical vibration energy through a horizontal shock absorbing assembly and a vertical shock absorbing assembly, thereby ensuring that the test device is not affected by vibration and ensuring the accuracy of the test; the present invention adjusts the height of the protection box and the vibration test assembly through a bracket one, bolts and a fixed bracket, and adjusts the angle of the protection box and the vibration test assembly through the angle adjustment and fixation between the bracket one and the bracket two, and the angle adjustment and fixation between the bracket two and the connecting ear plate, so that the present invention is not only suitable for horizontal ground but also for inclined walls such as slopes; the present invention designs a retractable protective plate, and during testing, the retractable protective plate at the bottom is pulled out, so that the vibration sensor in the test device directly contacts the tunnel surface and accurately measures data; in the present invention, the test device is protected by a fixed protective plate and a retractable protective plate to prevent flying stones generated during blasting from affecting the test device. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention.
[0017] Figure 2 It is a three-dimensional structural schematic diagram of the fixed shock-absorbing base and its internal structure in the present invention.
[0018] Figure 3 It is a schematic cross-sectional structure diagram of the fixed shock-absorbing base and its internal structure in the present invention.
[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the vertical shock absorbing assembly in the present invention.
[0020] Figure 5 It is a structural schematic diagram of the protection box and the vibration test assembly in the present invention.
[0021] As shown in the figure: 1. Fixed shock-absorbing base; 2. Groove; 4. Bolt; 5. Screw hole; 6. Fixed bracket; 7. Bolt 2; 9. Adjustable bracket; 10. Pull-out protective plate; 11. Connecting ear plate; 12. Fixed protective plate; 13. Shock-absorbing disc; 14. Horizontal shock-absorbing spring; 15. Circular retaining ring; 16. Limiting plate; 17. Fixed disc; 18. Damper; 19. Vertical shock-absorbing spring; 20. Bracket 1; 21. Bracket 2; 22. Screw hole 2; 23. Bolt 3; 25. Placement plate; 26. Blasting vibrometer; 27. Sensor connecting line; 28. Vibration sensor; 29. Buckle. DETAILED DESCRIPTION
[0022] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", "center", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present invention.
[0023] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "provided with", "installed", "connected", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0024] The present invention is further described in detail below in conjunction with the accompanying drawings.
[0025] Combined with Figure 1 To Attachment Figure 5 A simple device for tunnel blasting vibration test, comprising two fixed shock-absorbing bases 1, each of the fixed shock-absorbing bases 1 having an upper end surface provided with a groove 2, a horizontal shock-absorbing assembly being provided inside the groove 2, a vertical shock-absorbing assembly being fixedly provided on the upper end of the horizontal shock-absorbing assembly, a fixed bracket 6 being fixedly provided on the upper end of the vertical shock-absorbing assembly, a plurality of vertically distributed screw holes 5 being provided on the fixed bracket 6, an adjustable bracket 9 being fixedly provided on opposite sides of the two fixed brackets 6 by bolts 4, a protective box being fixedly provided between the other ends of the two adjustable brackets 9 by bolts 7, a vibration test assembly being fixedly provided inside the protective box, the protective box comprising fixed protective plates 12 located on all sides, and a removable protective plate 10 being movably inserted at both upper and lower ends of the fixed protective plate 12.
[0026] In this embodiment, as a preferred technical solution, the horizontal shock absorbing assembly includes a shock absorbing disc 13 movably arranged inside the groove 2, a horizontal shock absorbing spring 14 is connected around the shock absorbing disc 13 and the inner wall of the groove 2, a circular ring 15 is fixedly arranged on the inner wall of the groove 2, and the bottom end of the shock absorbing disc 13 extends to the bottom of the circular ring 15 and is fixedly provided with a limit plate 16.
[0027] In this embodiment, as a preferred technical solution, the vertical shock absorbing assembly includes two fixed discs 17 distributed up and down, and a plurality of dampers 18 are fixedly connected between the two fixed discs 17. A vertical shock absorbing spring 19 is sleeved on each damper 18. The fixed disc 17 located at the bottom is fixedly arranged on the upper end surface of the shock absorbing disc 13, and the fixed bracket 6 is fixedly arranged on the upper end surface of the fixed disc 17 located at the top.
[0028] In this embodiment, as a preferred technical solution, the adjustable bracket 9 includes a bracket 1 20 and a bracket 2 21, and the bracket 1 20 and the bracket 2 21 are both provided with a plurality of screw holes 22, and the bracket 1 20 and the bracket 2 21 are fixedly connected by bolts 3 23, and the other end of the bracket 1 20 is connected to the fixed bracket 6 by bolts 4, and the other end of the bracket 2 21 is fixedly connected to the protection box by bolts 2 7. The left and right sides of the fixed protection plate 12 are fixedly provided with connecting ear plates 11, and the connecting ear plates 11 are fixedly connected to the end of the bracket 2 21 by bolts 2 7.
[0029] In this embodiment, as a preferred technical solution, the vibration test assembly includes a placement support plate 25 fixedly arranged inside the fixed protective plate 12, a blasting vibrometer 26 is fixedly arranged on the placement support plate 25, and a vibration sensor 28 is connected to the input end of the blasting vibrometer 26 via a sensor connection line 27. A buckle 29 for fixing and clamping the sensor connection line 27 is fixedly arranged on the inner wall of the fixed protective plate 12 near the bottom.
[0030] The working process of a simple device for tunnel blasting vibration testing of the present invention is as follows:
[0031] 1. Before blasting the tunnel, first select a vibration test point that is suitable for the blasting point. According to the selected test point, firmly bond the fixed shock-absorbing base 1 coated with stone glue to the rock wall. Stone glue can ensure that there is sufficient adhesion between the base and the rock wall so that it will not fall off or move easily during the blasting process. Use nuts 4 and screw holes 5 to fix bracket 1 20 and adjust the height of bracket 1 20 to adjust the height position of the protection box and the vibration test assembly so that the vibration test assembly can be accurately and directly in contact with the test point. According to actual needs, adjust the angle between bracket 1 20 and bracket 2 21 and fix them with bolts 3 23. At the same time, adjust the angle between bracket 2 21 and the connecting ear plate 11 and fix them with bolts 2 7. In this process, the height and angle of the protection box and the vibration test assembly are adjusted to adapt to different tunnel wall conditions, whether it is horizontal ground or inclined walls such as slopes.
[0032] 2. Place the blasting vibration meter 26 on the placement tray 25 inside the protection box, and connect its input end to the vibration sensor 28 through the sensor connection line 27. In order to make the vibration sensor 28 effectively contact the test wall, a buckle 29 is provided near the bottom of the inner wall of the fixed protection plate 12 to fix the sensor connection line 27 so that the sensor connection line 27 will not fall naturally when testing the inclined wall. Remove the retractable protection plate 10 under the protection box, adjust the position of the vibration sensor 28 to make it fit on the rock wall, so that the sensor can directly contact the rock wall and accurately measure the vibration data generated by the blasting.
[0033] 3. The blasting vibration meter 26 is connected to an external power supply before starting. During the tunnel blasting process, the vibration generated by the blasting will be sensed by the vibration sensor 28 and converted into electrical signals, and these signals are transmitted to the blasting vibration meter 26 through the sensor connection line 27. The blasting vibration meter 26 analyzes and processes the received signals and records the relevant data of the vibration, such as amplitude, frequency, etc. During the test, the operator can directly observe the data displayed on the vibration meter 26 by removing the upper retractable protective plate 10, and understand the blasting vibration in real time.
[0034] 4. When the tunnel blasting generates vibration, the vibration energy in the horizontal direction will cause the shock-absorbing disc 13 to move relatively in the groove 2, and the horizontal shock-absorbing spring 14 will deform to consume this part of the energy. At the same time, the annular retaining ring 15 and the limit plate 16 limit the movement range of the shock-absorbing disc 13 to ensure that it works within a reasonable range. The vibration energy in the vertical direction is consumed by the damper 18 and the vertical shock-absorbing spring 19 in the vertical shock-absorbing assembly, so that the fixed bracket 6 and the protective box and vibration test assembly above remain relatively still, thereby ensuring that the test device is not affected by vibration and ensuring the accuracy of the test. During the entire test process, the horizontal shock-absorbing assembly and the vertical shock-absorbing assembly will work together to provide a stable working environment for the test device, so that the sensor can accurately measure the vibration of the rock wall. At the same time, through the protection of the fixed protective plate 12 and the retractable protective plate 10, the flying stones generated during the blasting are prevented from damaging the test device, ensuring the smooth progress of the test work.
[0035] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.
Claims
1. A simple device for tunnel blasting vibration testing, comprising two fixed shock-absorbing bases (1), characterized in that: Each of the fixed shock-absorbing bases (1) has a groove (2) on its upper end surface, a horizontal shock-absorbing assembly is arranged inside the groove (2), a vertical shock-absorbing assembly is fixedly arranged on the upper end of the horizontal shock-absorbing assembly, a fixed bracket (6) is fixedly arranged on the upper end of the vertical shock-absorbing assembly, a plurality of vertically distributed screw holes (5) are arranged on the fixed bracket (6), an adjustable bracket (9) is fixedly arranged on opposite sides of the two fixed brackets (6) by means of bolts (4), a protective box is fixedly arranged between the other ends of the two adjustable brackets (9) by means of bolts (7), a vibration test assembly is fixedly arranged inside the protective box, the protective box comprises fixed protective plates (12) arranged on all sides, and a removable protective plate (10) is movably inserted at both upper and lower ends of the fixed protective plate (12).
2. A simple device for tunnel blasting vibration testing according to claim 1, characterized in that: The horizontal shock absorbing assembly comprises a shock absorbing disc (13) movably arranged inside the groove (2); a horizontal shock absorbing spring (14) is connected between the periphery of the shock absorbing disc (13) and the inner wall of the groove (2); a circular ring retaining ring (15) is fixedly arranged on the inner wall of the groove (2); the bottom end of the shock absorbing disc (13) extends below the circular ring retaining ring (15) and is fixedly provided with a limiting plate (16).
3. A simple device for tunnel blasting vibration testing according to claim 2, characterized in that: The vertical shock absorbing assembly comprises two fixed discs (17) distributed in an upper and lower position, a plurality of dampers (18) are fixedly connected between the two fixed discs (17), each damper (18) is sleeved with a vertical shock absorbing spring (19), the fixed disc (17) located at the bottom is fixedly arranged on the upper end surface of the shock absorbing disc (13), and the fixed bracket (6) is fixedly arranged on the upper end surface of the fixed disc (17) located at the top.
4. A simple device for tunnel blasting vibration testing according to claim 1, characterized in that: The adjustable bracket (9) comprises a bracket one (20) and a bracket two (21), each of which is provided with a plurality of screw holes two (22), the bracket one (20) and the bracket two (21) are fixedly connected by bolts three (23), the other end of the bracket one (20) is connected to the fixed bracket (6) by bolts (4), and the other end of the bracket two (21) is fixedly connected to the protective box by bolts two (7).
5. A simple device for tunnel blasting vibration testing according to claim 4, characterized in that: The left and right sides of the fixed protection plate (12) are both fixedly provided with connecting ear plates (11), and the connecting ear plates (11) are fixedly connected to the ends of the second bracket (21) through the second bolt (7).
6. A simple device for tunnel blasting vibration testing according to claim 1, characterized in that: The vibration test assembly comprises a placement support plate (25) fixedly arranged inside a fixed protective plate (12), a blasting vibration meter (26) being fixedly arranged on the placement support plate (25), and a vibration sensor (28) being connected to an input end of the blasting vibration meter (26) via a sensor connection line (27).
7. A simple device for tunnel blasting vibration testing according to claim 6, characterized in that: A buckle (29) for fixing and clamping a sensor connecting line (27) is fixedly provided on the inner wall of the fixed protection plate (12) near the bottom.