Protection device for improving accuracy of tunnel blasting vibration monitoring data
By using anti-flying rock and shock wave absorbing mechanisms in tunnel blasting vibration monitoring, the equipment is protected and the energy of air shock waves is absorbed, solving the problem of inaccurate tunnel blasting vibration monitoring data and achieving higher monitoring accuracy.
Patent Information
- Application Number
- CN202423213604.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-25
AI Technical Summary
Existing tunnel blasting vibration monitoring instruments have failed to effectively distinguish between rock wall vibration and air shock wave vibration generated during tunnel blasting, resulting in inaccurate monitoring data.
The system employs a rock-proof mechanism and a shock wave absorption mechanism, including a base box, a protective box, a conduit, a shock wave absorption box, and energy-absorbing elastic components, to protect the vibration monitoring host and sensors, absorb the energy of air shock waves, and reduce the impact of air shock waves on monitoring data.
It improves the accuracy of tunnel blasting vibration monitoring data, prevents damage to equipment from flying rocks, and effectively eliminates the impact of air shock waves on monitoring data, thereby enhancing the accuracy of monitoring.
Smart Images
Figure CN223768614U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tunnel blasting vibration monitoring, and in particular to a protective device for improving the accuracy of tunnel blasting vibration monitoring data. Background Technology
[0002] With the rapid development of road and transportation construction in my country and the continuous improvement of construction technology, the pursuit of speed in tunnel engineering construction is gradually shifting towards refinement. During tunnel construction, blasting vibration, as a hazard associated with blasting excavation, has attracted increasing attention. Solving the problem of effective and accurate monitoring of tunnel blasting vibration is of significant research importance for improving tunnel construction stability and guiding tunnel construction.
[0003] Existing tunnel blasting vibration monitoring instruments often neglect the air shock waves generated during tunnel blasting. However, after propagating through the air, these air shock waves, due to their beating effect, significantly impact the monitoring sensors. This results in monitoring data that is not solely composed of rock wall vibrations from tunnel blasting, but rather a superposition of rock wall vibrations and air shock wave beating (a common monitoring waveform under the combined effect of tunnel blasting vibration and air shock waves is shown in the image). Figure 1 (As shown in the figure), this can easily lead to inaccurate monitoring data. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a protective device for improving the accuracy of tunnel blasting vibration monitoring data. It can effectively protect the tunnel blasting vibration monitoring instrument during tunnel blasting vibration monitoring and effectively reduce the vibration effect of air shock waves, thereby improving the accuracy of monitoring data.
[0005] To solve the above-mentioned technical problems, the protection device for improving the accuracy of tunnel blasting vibration monitoring data provided by this utility model adopts the following technical solution:
[0006] A protective device for improving the accuracy of tunnel blasting vibration monitoring data includes a rock-blocking mechanism and a shock wave absorbing mechanism. The rock-blocking mechanism includes a base box and a protective box disposed on the base box. The base box is used to house the vibration monitoring host. A conduit connects the base box and the protective box. The shock wave absorbing mechanism includes a shock wave absorbing box located inside the protective box. The shock wave absorbing box and the inner wall of the protective box are connected by several energy-absorbing elastic elements. One side wall on the same side of both the protective box and the shock wave absorbing box is open.
[0007] By adopting the above technical solution, when monitoring tunnel blasting vibration, a vibration monitoring sensor is installed by drilling holes at predetermined rock wall locations, and the protective device is pushed close to the vibration monitoring sensor. The vibration monitoring host is placed inside the base box, and the monitoring data cable is passed through a conduit and connected to the vibration monitoring sensor. The vibration monitoring sensor is then positioned inside the opening of the shock wave absorption box, and the power to the vibration monitoring host is turned on to monitor the blasting vibration. The protective box and the base box protect the vibration monitoring host and the vibration monitoring sensor from flying rocks, respectively. Several energy-absorbing elastic elements provide support for the shock wave absorption box and convert the mechanical energy of the air shock wave transmitted from the flying rock protection box into elastic potential energy, thereby mitigating the impact of air shock wave vibration on the accuracy of tunnel blasting vibration data and improving the precision of the monitoring data.
[0008] Optionally, the inner wall of the shock wave absorbing box is provided with an energy-absorbing pad.
[0009] By adopting the above technical solution, the energy-absorbing pad can absorb the remaining energy of the air shock wave after it passes through the shock wave absorption box wall, thereby more effectively and comprehensively eliminating the impact of air shock wave vibration on the accuracy of tunnel blasting vibration data and further improving the accuracy of monitoring data.
[0010] Optionally, a first sealing ring is provided along the edge of the opening of the protective box.
[0011] By adopting the above technical solution, the first sealing ring ensures that the opening edge of the protective box can fit tightly against the tunnel wall without gaps, thereby preventing flying rocks generated by tunnel blasting from entering the protective box through gaps; and preventing air shock waves from entering the protective box through gaps and directly acting on the shock wave absorption box, which would cause the vibration monitoring sensor to be greatly affected by the vibration of the air shock wave.
[0012] Optionally, a second sealing ring is provided along the edge of the opening of the shock wave absorbing box.
[0013] By adopting the above technical solution, the second sealing ring ensures that the opening edge of the shock wave absorption box can be tightly attached to the tunnel wall without gaps, thereby preventing flying rocks generated by tunnel blasting from entering the protective box through gaps and damaging the vibration monitoring sensor; and preventing air shock waves from entering the shock wave absorption box through gaps and directly acting on the vibration monitoring sensor, which would cause the vibration monitoring sensor to be greatly affected by the vibration of the air shock wave.
[0014] Optionally, a lifting mechanism is provided between the protective box and the base box, the lifting mechanism being used to adjust the distance between the protective box and the base box, and the conduit being a telescopic conduit.
[0015] By adopting the above technical solution, the lifting mechanism can adjust the height of the protective box, enabling vibration monitoring of the tunnel at different heights, thus improving practicality and applicability; the conduit is a telescopic conduit, which can adapt to changes in the distance between the protective box and the base box, and can effectively protect the monitoring data line.
[0016] Optionally, the lifting mechanism includes at least three telescopic self-locking rods, with both ends of the telescopic self-locking rods connected to the protective box and the base box, respectively.
[0017] By adopting the above technical solution, the distance between the protective box and the base box can be adjusted through the extension and self-locking of the telescopic self-locking rod.
[0018] Optionally, a walking mechanism is provided at the bottom of the base box.
[0019] By adopting the above technical solution, the walking mechanism can enable the protective device to move and be fixed within a small range in the tunnel, thereby improving the convenience of vibration monitoring.
[0020] Optionally, the walking mechanism includes at least three casters disposed at the bottom of the base box, and the casters are provided with caster brake pads.
[0021] By adopting the above technical solution, the omnidirectional wheels can be rolled to achieve small-range movement within the tunnel, and the omnidirectional wheel brake pads can achieve rapid braking of the omnidirectional wheels, keeping the device in a stable state.
[0022] In summary, this utility model has at least one of the following beneficial technical effects:
[0023] 1. The protective box and the base box can protect the vibration monitoring host and the vibration monitoring sensor from flying rocks, respectively; several energy-absorbing elastic elements can provide support for the shock wave absorption box, and at the same time can convert the mechanical energy of the air shock wave transmitted from the flying rock protection box into elastic potential energy, so as to eliminate the influence of air shock wave vibration on the accuracy of tunnel blasting vibration data and improve the accuracy of monitoring data.
[0024] 2. The energy-absorbing pad can absorb the remaining energy of the air shock wave after it passes through the shock wave absorption box wall, thus more effectively and comprehensively eliminating the impact of air shock wave beat vibration on the accuracy of tunnel blasting vibration data and further improving the accuracy of monitoring data;
[0025] 3. The lifting mechanism can adjust the height of the protective box, enabling vibration monitoring of the tunnel at different heights, thus improving practicality and applicability; the conduit is a telescopic tube, which can adapt to changes in the distance between the protective box and the base box, effectively protecting the monitoring data line. Attached Figure Description
[0026] Figure 1This is a schematic diagram of a common monitoring wave under the combined action of tunnel blasting vibration and air shock wave.
[0027] Figure 2 This is a schematic diagram of the overall structure of a protective device for improving the accuracy of tunnel blasting vibration monitoring data, which is a feature of this utility model.
[0028] Figure 3 This is a schematic diagram of the structure of the protective box and the shock wave absorbing box used in this utility model.
[0029] Explanation of reference numerals in the attached drawings: 1. Protective box; 2. First sealing ring; 3. Shock wave absorbing box; 4. Second sealing ring; 5. Telescopic self-locking rod; 6. Bottom cover; 7. Base box; 8. Caster wheel; 9. Caster wheel brake pad; 10. Conduit; 11. Energy-absorbing elastic element; 12. Energy-absorbing pad. Detailed Implementation
[0030] The following is in conjunction with the appendix Figure 2-3 The present invention will be described in further detail below.
[0031] This utility model discloses a protection device for improving the accuracy of tunnel blasting vibration monitoring data. (Refer to...) Figure 2 and Figure 3 The protective device for improving the accuracy of tunnel blasting vibration monitoring data includes a rock-flying mechanism, a lifting mechanism, a shock wave absorbing mechanism, and a traveling mechanism. The rock-flying mechanism includes a base box 7 and a protective box 1. The protective box 1 is located above the base box 7. The lifting mechanism is located between the base box 7 and the protective box 1. The shock wave absorbing mechanism is located inside the rock-flying protective box 11. A conduit 10 is installed between the base box 7 and the protective box 1. The conduit 10 is a telescopic tube. The traveling mechanism is located at the bottom of the base box 7.
[0032] Reference Figure 2 The base box 7 is a rectangular box with an opening on its upper side wall. A bottom cover 6 is provided on the edge of the upper opening of the base box 7. One end of the wire conduit 10 is vertically fixed to the upper side of the bottom cover 6, and the other end is vertically fixed to the lower side wall of the protective box 1. The wire conduit 10 is connected to the interior of both the base box 7 and the protective box 1.
[0033] Reference Figure 2 The lifting mechanism includes four telescopic self-locking rods 5, which are spaced apart around the central axis of the base box 7, and the upper ends of the four telescopic self-locking rods 5 are all inclined towards the central axis of the base box 7. One end of each of the four telescopic self-locking rods 5 is hinged to the edge of the opening of the base box 7, and the other end is hinged to the lower side wall of the protective box 1.
[0034] By extending and locking the telescopic self-locking rod 5, the distance between the protective box 1 and the base box 7 can be adjusted, thereby adjusting the height of the protective box 1. This enables vibration monitoring of the tunnel at different heights, improving practicality and applicability. The conduit 10 is a telescopic tube that can adapt to changes in the distance between the protective box 1 and the base box 7, effectively protecting the monitoring data line.
[0035] Reference Figure 2 and Figure 3 The protective box 1 is a rectangular box with an opening on one side wall, the opening of which is horizontal. The shock wave absorption mechanism includes a shock wave absorption box 3 and several energy-absorbing elastic elements 11. The shock wave absorption box 3 is located within the protective box 1 and is also rectangular. The side wall of the shock wave absorption box 3 closest to the opening of the protective box 1 is open, the opening of which is horizontal. Several energy-absorbing elastic elements 11 are positioned between the protective box 1 and the shock wave absorption box 3. Each energy-absorbing elastic element 11 is a spring, with one end fixedly connected to the inner wall of the protective box 1 and the other end fixedly connected to the outer wall of the shock wave absorption box 3. An energy-absorbing pad 12 is laid and fixedly installed on the inner wall of the shock wave absorption box 3.
[0036] When conducting tunnel blasting vibration monitoring, holes are drilled at predetermined rock wall locations to install vibration monitoring sensors, and the protective device is pushed close to the vibration monitoring sensors. The bottom cover 6 is opened to place the vibration monitoring host inside the base box 7. The monitoring data cable is passed through the conduit 10, then through the protective box 1 and the shock wave absorption box 3 to connect to the vibration monitoring sensor. The height of the protective box 1 is then adjusted using the telescopic self-locking rod 5 so that the vibration monitoring sensor is positioned inside the opening of the shock wave absorption box 3. The power to the vibration monitoring host is then turned on to begin blasting vibration monitoring.
[0037] The protective box 1 and the base box 7 protect the vibration monitoring host and vibration monitoring sensor from flying rocks, respectively. Several energy-absorbing elastic elements 11 provide support for the shock wave absorption box 3 and convert the mechanical energy of the air shock wave transmitted from the flying rock protection box 11 into elastic potential energy. This helps to mitigate the impact of air shock wave vibration on the accuracy of tunnel blasting vibration data, thereby improving the accuracy of the monitoring data. The energy-absorbing pad 12 absorbs the remaining energy of the air shock wave after it passes through the wall of the shock wave absorption box 3, thus more effectively and comprehensively mitigating the impact of air shock wave vibration on the accuracy of tunnel blasting vibration data and further improving the accuracy of the monitoring data.
[0038] Reference Figure 2A first sealing ring 2 is fixedly connected to the edge of the opening of the protective box 1. The first sealing ring 2 is arranged around the opening of the protective box 1 and is made of rubber. The first sealing ring 2 ensures that the edge of the opening of the protective box 1 fits tightly against the tunnel wall without gaps, thereby preventing flying rocks generated by tunnel blasting from entering the protective box 1 through gaps; and preventing air shock waves from entering the protective box 1 through gaps and directly acting on the shock wave absorption box 3, which would cause the vibration monitoring sensor to be greatly affected by the vibration of the air shock wave.
[0039] Reference Figure 2 A second sealing ring 4 is provided along the edge of the opening of the shock wave absorption box 3. The second sealing ring 4 is arranged around the opening of the shock wave absorption box 3 and is made of rubber. The second sealing ring 4 ensures that the edge of the opening of the shock wave absorption box 3 fits tightly against the tunnel wall without gaps, thereby preventing flying rocks generated by tunnel blasting from entering the protective box 1 through gaps and damaging the vibration monitoring sensor; and preventing air shock waves from entering the shock wave absorption box 3 through gaps and directly acting on the vibration monitoring sensor, which would cause the vibration monitoring sensor's monitoring to be greatly affected by the vibration of the air shock wave.
[0040] Reference Figure 2 The traveling mechanism includes four casters 8, which are respectively located at the four corners of the bottom of the base box 7. Each caster 8 is equipped with a caster brake pad 9. The casters 8 allow for small-range movement within the tunnel, and the brake pads 9 enable rapid braking of the casters 8, keeping the device stable. This traveling mechanism allows for the limited movement and fixation of the protection device within the tunnel, thereby improving the convenience of vibration monitoring.
[0041] The implementation principle of a protective device for improving the accuracy of tunnel blasting vibration monitoring data according to this utility model embodiment is as follows: When monitoring tunnel blasting vibration, a vibration monitoring sensor is installed by drilling a hole at a predetermined rock wall position. The protective device is pushed close to the vibration monitoring sensor using casters 8. The bottom cover 6 is opened to place the vibration monitoring host in the base box 7. The monitoring data cable is passed through the conduit 10, then through the protective box 1 and the shock wave absorption box 3 to connect with the vibration monitoring sensor. The height of the protective box 1 is adjusted by the telescopic self-locking rod 5 so that the vibration monitoring sensor is located in the opening of the shock wave absorption box 3. The power of the vibration monitoring host is turned on to perform blasting vibration monitoring.
[0042] The protective box 1 and the base box 7 protect the vibration monitoring host and vibration monitoring sensor from flying rocks, respectively. Several energy-absorbing elastic elements 11 provide support for the shock wave absorption box 3 and convert the mechanical energy of the air shock wave transmitted from the flying rock protection box 11 into elastic potential energy. This helps to mitigate the impact of air shock wave vibration on the accuracy of tunnel blasting vibration data, thereby improving the accuracy of the monitoring data. The energy-absorbing pad 12 absorbs the remaining energy of the air shock wave after it passes through the wall of the shock wave absorption box 3, thus more effectively and comprehensively mitigating the impact of air shock wave vibration on the accuracy of tunnel blasting vibration data and further improving the accuracy of the monitoring data.
[0043] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.
Claims
1. A protective device for improving the accuracy of tunnel blasting vibration monitoring data, characterized in that: The application relates to a flying stone prevention mechanism and a shock wave absorption mechanism, wherein the flying stone prevention mechanism comprises a base box (7) for placing a vibration monitoring host computer and a protection box (1) arranged on the base box (7); a wire tube (10) is arranged between the base box (7) and the protection box (1); the shock wave absorption mechanism comprises a shock wave absorption box (3) arranged in the protection box (1); the shock wave absorption box (3) and the inner wall of the protection box (1) are connected through a plurality of energy absorption elastic members (11); and one side wall of the protection box (1) and the shock wave absorption box (3) is arranged in an open mode.
2. The protection device for improving the precision of tunnel blasting vibration monitoring data according to claim 1, characterized in that: The inner wall of the shock wave absorption box (3) is provided with an energy absorption pad (12).
3. The protection device for improving the precision of tunnel blasting vibration monitoring data according to claim 1, characterized in that: The open edge of the protection box (1) is provided with a first sealing ring (2).
4. The protection device for improving the precision of tunnel blasting vibration monitoring data according to claim 1, characterized in that: The open edge of the shock wave absorption box (3) is provided with a second sealing ring (4).
5. The protection device for improving the precision of tunnel blasting vibration monitoring data according to claim 1, characterized in that: A lifting mechanism is arranged between the protection box (1) and the base box (7), the lifting mechanism is used for adjusting the distance between the protection box (1) and the base box (7), and the wire tube (10) is a telescopic tube.
6. The protection device for improving the precision of tunnel blasting vibration monitoring data according to claim 5, characterized in that: The lifting mechanism comprises at least three telescopic self-locking rods (5), and the two ends of the telescopic self-locking rods (5) are connected to the protection box (1) and the base box (7) respectively.
7. The protection device for improving the precision of tunnel blasting vibration monitoring data according to claim 1, characterized in that: The bottom of the base box (7) is provided with a walking mechanism.
8. The protection device for improving the precision of tunnel blasting vibration monitoring data according to claim 7, characterized in that: The walking mechanism comprises at least three universal wheels (8) arranged at the bottom of the base box (7), and the universal wheels (8) are provided with universal wheel brake pieces (9).