Electromagnetic controllable excitation device and method for longitudinal and transverse wave excitation of deep-buried tunnel

Abstract

The application belongs to the technical field of tunnel geological advanced prediction, and provides an electromagnetic controllable excitation device and method for longitudinal and transverse wave excitation of a deep-buried tunnel. The excitation device comprises a body, longitudinal and transverse wave excitation plates arranged on the body, and a rotating mechanism arranged on the body. The longitudinal and transverse wave excitation plates are perpendicular to each other, and the rotating mechanism is connected with a mechanical arm. The rotating mechanism is used to realize the operation switching of the longitudinal and transverse wave excitation plates at the same physical position, and longitudinal and transverse wave excitation is performed. The longitudinal and transverse wave excitation functions are integrated in a single excitation device, the structure is compact, and the device is suitable for operation requirements in a narrow space area in a tunnel. The rotating mechanism is used to realize 90-degree rapid switching, the detection efficiency is greatly improved, the physical positions of two times of excitation are completely consistent, and the data comparability is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel geological advance prediction, and particularly relates to an electromagnetic controllable excitation device and method for longitudinal and transverse wave excitation of a deep-buried tunnel. BACKGROUND

[0002] Longitudinal waves (P waves) and transverse waves (S waves) in seismic waves carry different rock mass mechanical information, and P wave and S wave data can be used to more comprehensively and accurately interpret geological structures and lithology; at present, a seismic source in a tunnel mainly adopts explosive blasting or hammering.

[0003] The existing seismic source in a tunnel mainly adopts a separate longitudinal wave source and a transverse wave source, which results in a large device, complicated operation, and difficulty in completely coinciding the excitation point positions; specifically, the space in a tunnel is narrow, the current excitation device has poor compactness, cannot quickly switch the excitation mode in situ, and cannot ensure that the physical positions of two excitations are completely consistent, resulting in poor data comparability; and the excitation surface in a tunnel is covered with an arch and a steel mesh, if the action area of an exciter is large, it will act on the arch and the steel mesh in a large area, affecting the stability of the arch and the steel mesh layer; or a single excitation direction is adopted to obtain a transverse wave through waveform conversion, and the signal purity and energy are insufficient. SUMMARY

[0004] In order to solve the above problems, the present application provides an electromagnetic controllable excitation device and method for longitudinal and transverse wave excitation of a deep-buried tunnel, which integrates longitudinal wave and transverse wave excitation functions in a single exciter, has a compact structure, is suitable for operation requirements in a narrow space in a tunnel, realizes 90-degree quick switching through a rotating mechanism, greatly improves the detection efficiency, ensures that the physical positions of two excitations are completely consistent, and improves the data comparability.

[0005] In order to achieve the above purpose, in a first aspect, the present application provides an electromagnetic controllable excitation device for longitudinal and transverse wave excitation of a deep-buried tunnel, which adopts the following technical scheme:

[0006] An electromagnetic controllable excitation device for longitudinal and transverse wave excitation of a deep-buried tunnel, comprising a vehicle body and an exciter provided on the vehicle body through a mechanical arm;

[0007] The exciter comprises a body, a longitudinal wave excitation plate and a transverse wave excitation plate provided on the body, and a rotating mechanism provided on the body; the longitudinal wave excitation plate and the transverse wave excitation plate are perpendicular to each other, and the rotating mechanism is connected with the mechanical arm; the rotating mechanism is used to realize operation switching of the longitudinal wave excitation plate and the transverse wave excitation plate at the same physical position, and longitudinal wave and transverse wave excitation.

[0008] Further, the vehicle body is provided with a track walking mechanism, a radar, a power amplifier, a controller, a power supply, a camera, an antenna and a GPS locator, and the controller is connected with a remote controller through the antenna.

[0009] Further, the track walking mechanism comprises a driving wheel arranged on the vehicle body, a load bearing wheel, a transition wheel and a belt supporting wheel arranged on the vehicle body, a tensioning wheel arranged on the vehicle body, and a track.

[0010] Further, the rotating mechanism comprises a base connected with the mechanical arm, a motor and a turbine arranged on the base, and a worm arranged on the output shaft of the motor and engaged with the turbine; the turbine is connected with the body through a connecting shaft.

[0011] Further, the body comprises a fixed base plate connected with the rotating mechanism, and the fixed base plate is connected with the rotating mechanism.

[0012] Further, the fixed base plate is provided with a driving coil, a permanent magnet and an iron core are arranged in the driving coil, a base core is arranged at the end of the iron core away from the fixed base plate, a magnetic cylinder base is connected with the base core, and a magnetic cylinder is arranged outside the driving coil; the iron core, the permanent magnet, the magnetic cylinder base, the magnetic cylinder and the base core are assembled into one body; a through hole is arranged on the magnetic cylinder base and the magnetic cylinder, a guide column is slidably arranged in the through hole, and the two ends of the guide column are connected with the fixed base plate and the longitudinal wave excitation plate respectively; the two ends of the guide column are sleeved with springs respectively, the two ends of one of the springs are connected with the longitudinal wave excitation plate and the magnetic cylinder base respectively, and the two ends of the other spring are connected with the fixed base plate and the magnetic cylinder respectively.

[0013] Further, the permanent magnet is provided with an iron core at each end.

[0014] Further, a plurality of force cones are arranged on the outer surfaces of the longitudinal wave excitation plate and the transverse wave excitation plate.

[0015] To achieve the above-mentioned purpose, in the second aspect, the application further provides an electromagnetic controllable excitation method for longitudinal and transverse wave excitation of deep buried tunnels.

[0016] An electromagnetic controllable excitation method for longitudinal and transverse wave excitation of deep buried tunnels uses the electromagnetic controllable excitation device for longitudinal and transverse wave excitation of deep buried tunnels as described in the first aspect, and comprises: switching the operation of the longitudinal wave excitation plate and the transverse wave excitation plate at the same physical position through the rotating mechanism to perform longitudinal wave and transverse wave excitation.

[0017] Furthermore, a sinusoidal alternating current is passed through the drive coil to generate a sinusoidal alternating magnetic field. The sinusoidal alternating magnetic field causes the iron core, permanent magnet, magnetic cylinder base, magnetic cylinder and base core to move up and down along the guide column in a sinusoidal motion, generating an excitation force. The excitation force generated by the motion is transmitted to the longitudinal wave excitation plate and the fixed base plate through the spring. When the longitudinal wave excitation plate is in close contact with the tunnel sidewall, longitudinal wave excitation is performed. When the transverse wave excitation plate is in close contact with the tunnel sidewall, transverse wave excitation is performed.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The vibrator of this invention includes a body, a longitudinal wave excitation plate and a transverse wave excitation plate disposed on the body, and a rotating mechanism disposed on the body; the longitudinal wave excitation plate and the transverse wave excitation plate are perpendicular to each other, and the rotating mechanism is connected to a robotic arm; the rotating mechanism enables the switching of the longitudinal wave excitation plate and the transverse wave excitation plate to operate in the same physical position, thereby performing longitudinal wave and transverse wave excitation; the longitudinal wave and transverse wave excitation functions are integrated into a single vibrator, which has a compact structure and is suitable for the operation requirements of narrow spaces in tunnels. The rotating mechanism enables a 90-degree rapid switching, which greatly improves the detection efficiency and ensures that the physical positions of the two excitations are completely consistent, thereby improving the comparability of data.

[0020] 2. This invention significantly reduces the gaps between components and optimizes space utilization through an integrated design that combines the drive coil, permanent magnet, iron core, magnetic cylinder base, and magnetic cylinder. This results in a compact exciter design, which is beneficial for working in the confined space of a tunnel and for in-situ switching between longitudinal wave and transverse wave exciter plates within the confined space of a tunnel. The compact design of the exciter can avoid the direct impact of the arch frame and steel mesh, or reduce the working area on the arch frame and steel mesh, thus solving the problem of excitation affecting the stability of the arch frame and steel mesh layer.

[0021] 3. The dual buffering mechanism of the guide column and spring in this invention effectively absorbs the impact of motion and ensures the smoothness of the transmission of excitation force. Combined with the force cone design, it increases the contact area between the vibrator and the tunnel wall, further improving the force transmission efficiency and stability.

[0022] 4. The present invention uses a sinusoidal alternating current to drive a coil to generate a magnetic field, and achieves efficient energy conversion and force transmission through the principle of electromagnetic induction. The rigidity of the integrated components is enhanced, deformation during the movement is reduced, and the precise transmission of excitation force is ensured.

[0023] 5. The present invention, through the setting of the tracked walking mechanism, can travel in the complex environment of tunnels and is relatively stable when stopped, which is conducive to the stable operation of the vibrator.

[0024] 6、The rotation mechanism, longitudinal wave excitation plate and transverse wave excitation plate are ingeniously matched, 90-degree quick switching is realized through the rotation mechanism, the detection efficiency is greatly improved, and the physical positions of two excitation shocks are completely consistent, the data comparability is improved, and the working of the longitudinal wave excitation plate and the transverse wave excitation plate is relatively stable before and after switching through the cooperation of the turbine worm in the rotation mechanism, and the excitation effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings constituting a part of this embodiment are used to provide further understanding of the embodiment, and the schematic embodiment and its description are used to explain the embodiment, and do not constitute improper limitation on the embodiment.

[0026] Figure 1 It is a device structure schematic diagram of the embodiment 1 of the application;

[0027] Figure 2 It is a structure schematic diagram of the excitation vibrator of the embodiment 1 of the application;

[0028] Figure 3 It is an internal schematic diagram of the excitation vibrator body of the embodiment 1 of the application;

[0029] 1, vehicle body; 11, track walking mechanism; 111, driving wheel; 112, bearing wheel; 113, transition wheel; 114, belt supporting wheel; 115, tensioning wheel; 116, track; 12, radar; 13, power amplifier; 14, controller; 15, power supply; 16, camera; 17, antenna; 18, GPS positioner; 2, mechanical arm; 3, excitation vibrator; 31, body; 311, fixed bottom plate; 312, driving coil; 313, permanent magnet; 314, iron core; 315, base core; 316, magnetic cylinder base; 317, magnetic cylinder; 318, guide column; 319, spring; 3110, force cone; 32, longitudinal wave excitation plate; 33, transverse wave excitation plate; 34, rotation mechanism; 341, base; 342, motor; 343, worm; 344, turbine. DETAILED DESCRIPTION

[0030] The application will be further described below in combination with the drawings and embodiments.

[0031] It should be pointed out that the following detailed description is exemplary and is intended to provide further description of the application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as generally understood by those skilled in the art to which the application belongs.

[0032] Embodiment 1:

[0033] In the advanced geological prediction, surrounding rock quality assessment and engineering geological survey of deep buried tunnel construction, seismic wave exploration is a key nondestructive detection technology. By artificially exciting seismic waves and receiving reflected / scattered wave signals from the interface or abnormal body of the stratum, the geological conditions in front can be inferred. The P wave and S wave in the seismic wave carry different rock mass mechanical information. For example, the P wave velocity is related to the integrity of the rock mass, and the S wave velocity is related to the strength and Poisson's ratio of the rock mass. The P wave and S wave data can be used to more comprehensively and accurately interpret the geological structure and lithology.

[0034] As described in the background, at present, the seismic source in the tunnel mainly uses explosive explosion or hammering. The explosive seismic source has strong energy, but poor safety, complicated operation, and cannot be repeated, and mainly excites P wave, and the S wave energy is weak and the signal-to-noise ratio is low. The hammering seismic source is simple and safe, but the energy is weak and the repeatability is poor, and it is also difficult to excite high-quality directional S wave. The existing tunnel seismic source has the following limitations: using discrete P wave source and S wave source, resulting in large equipment, complicated operation, and difficult to completely coincide with the excitation point position; or using a single excitation direction, obtaining the S wave through wave conversion, the signal purity and energy are insufficient. In addition, the space in the tunnel is narrow, and the integration and operation flexibility of the equipment are extremely high. At present, the structure of the excitation equipment is not compact, the excitation mode cannot be quickly switched in situ, and the physical position of the two excitations cannot be completely consistent, resulting in poor data comparability.

[0035] In order to solve at least one of the above problems, the embodiment provides an electromagnetic controllable excitation device for longitudinal and transverse wave excitation of deep buried tunnel, which integrates a crawler chassis, uses a single electromagnetic exciter, and rotates to switch a longitudinal wave excitation plate and a transverse wave excitation plate. The controllable seismic source realizes efficient and high-precision tunnel full wave field seismic excitation. As shown in Figure 1 The excitation device includes a vehicle body 1 and an exciter 3 arranged on the vehicle body 1 through a mechanical arm 2.

[0036] As shown in Figure 1 The vehicle body 1 is provided with a crawler traveling mechanism 11, a radar 12, a power amplifier 13, a controller 14, a power supply 15, a camera 16, an antenna 17 and a GPS positioner 18. The controller 14 is connected with a remote controller through the antenna 17.

[0037] The tracked walking mechanism 11 serves as the walking mechanism of the vehicle body 1 and is located at the bottom of the vehicle body 1. The radar 12 can be used to receive excitation signals, providing a basis for subsequent signal analysis and processing. The power amplifier 13 and the controller 14 can be located inside the vehicle body 1; the controller 14 is connected to the tracked walking mechanism 11, the radar 12, the power amplifier 13, the power supply 15, the camera 16, the antenna 17, the GPS locator 18, the vibrator 3, and the robotic arm 2, etc. The controller 14 is used to receive, process, and analyze relevant signals, and issue corresponding commands. For example, the controller 14 is used to control the walking and rotating mechanisms of the vehicle body 1 and the signal output of the vibrator 3. The power supply 15 supplies power to the entire device. The camera 16 can collect environmental images in real time, providing reference information for walking and working actions. The antenna 17 is used for transmitting and receiving wireless signals. The GPS locator 18 is used for positioning.

[0038] like Figure 1 As shown, the tracked walking mechanism 11 serves as the chassis for the vehicle body 1, providing mobility and positioning capabilities within the tunnel. The tracked walking mechanism 11 includes a leveling and parking locking mechanism. The tracked walking mechanism 11 comprises a drive wheel 111 mounted on the vehicle body 1, load-bearing wheels 112, transition wheels 113, and track support wheels 114 mounted on the vehicle body 1, a tension wheel 115 mounted on the vehicle body 1, and tracks 116.

[0039] The drive wheel 111 is located at one end of the tracked walking mechanism 11. The drive wheel 111 can be connected to a motor or other driving device to provide power to the tracked walking mechanism 11. Multiple load-bearing wheels 112, transition wheels 113, and track support wheels 114 are provided, located at the lower and upper parts of the tracked walking mechanism 11, respectively. The tension wheel 115 is located at the end of the tracked walking mechanism 11 away from the drive wheel 111, and the tension wheel 115 can be connected to the vehicle body 1 via a telescopic device. The tracked walking mechanism 11 allows for operation in complex tunnel environments and provides greater stability when stopped, which is beneficial for the stable operation of the vibrator 3.

[0040] The robotic arm 2 is a multi-degree-of-freedom robotic arm with telescopic, pitching, and yaw functions, used to precisely press the working surface of the vibrator 3 against the tunnel sidewall or face. The robotic arm 2 can be hydraulically driven.

[0041] like Figure 2As shown, the exciter 3 comprises a body 31, a longitudinal wave excitation plate 32 and a transverse wave excitation plate 33 arranged on the body 31, and a rotating mechanism 34 arranged on the body 31; the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 are perpendicular to each other, and the rotating mechanism 34 is connected with the mechanical arm 2.

[0042] The rotating mechanism 34 is connected between the mechanical arm 2 and the exciter 3, and is used to drive the body 31 of the exciter 3 to rotate at least 90° around the central axis thereof. The rotating mechanism 34 comprises a base 341 connected with the mechanical arm 2, a motor 342 and a worm wheel 344 arranged on the base 341, a worm 343 arranged on the output shaft of the motor 342 and engaged with the worm wheel 344, and the worm wheel 344 is connected with the body 31 through a connecting shaft.

[0043] In operation, the motor 342 drives the worm 343 to rotate, the worm 343 drives the worm wheel 344 to rotate, the worm wheel 344 is rigidly connected with the body 31, and the worm wheel 344 drives the body 31 to rotate 90°, so as to realize the working switching of the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33. When the longitudinal wave excitation plate 32 is closely attached to the tunnel wall, longitudinal wave excitation is performed, and when the transverse wave excitation plate 33 is closely attached to the tunnel wall, transverse wave excitation is performed.

[0044] The rotating mechanism 34, the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 are cleverly matched, 90° fast switching is realized through the rotating mechanism, the detection efficiency is greatly improved, the physical positions of two excitations are completely consistent, the data comparability is improved, and the working stability of the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 before and after switching is ensured, so as to ensure the excitation effect.

[0045] In the embodiment, the composite excitation plate composed of the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 is fixedly installed on the output end of the integrated controllable vibrator exciter, the working surfaces of the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 are perpendicular to each other; the normal direction of the working surface of the longitudinal wave excitation plate 32 is parallel to the main excitation direction of the exciter 3, and is used to generate a force acting perpendicularly on the tunnel wall to excite longitudinal wave; the normal direction of the excitation working surface of the transverse wave excitation plate 33 is perpendicular to the normal direction of the working surface of the longitudinal wave excitation plate 32, and is used to generate a shear force parallel to the tunnel wall to excite transverse wave.

[0046] The working surfaces of the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 are embedded with pressure sensors. The back surfaces of the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 are provided with force sensors and displacement sensors, which are used to monitor the coupling state and excitation parameters in real time and feed back to the controller 14.

[0047] AsFigure 3 As shown, the body 31 comprises a fixed bottom plate 311 connected with the rotating mechanism 34, and the fixed bottom plate 311 is connected with the turbine 344 by welding, bolt connection or other connection modes; the fixed bottom plate 311 is provided with a driving coil 312, the driving coil 312 is provided with a permanent magnet 313 and an iron core 314, the iron core 314 is provided with a base core 315 at an end away from the fixed bottom plate 311, the base core 315 is connected with a magnetic cylinder base 316, and the driving coil 312 is externally provided with a magnetic cylinder 317; the iron core 314, the permanent magnet 313, the magnetic cylinder base 316, the magnetic cylinder 317 and the base core 315 are assembled into one body. The permanent magnet 313 is provided with an iron core 314 at each end.

[0048] The magnetic cylinder base 316 and the magnetic cylinder 317 are provided with through holes, and a guide column 318 is slidably arranged in the through holes, and the two ends of the guide column 318 are respectively connected with the fixed bottom plate 311 and the longitudinal wave excitation plate 32. The two ends of the guide column 318 are respectively sleeved with springs 319, and the two ends of one spring are respectively connected with the longitudinal wave excitation plate 32 and the magnetic cylinder base 316, and the two ends of the other spring are respectively connected with the fixed bottom plate 311 and the magnetic cylinder 317.

[0049] The outer surfaces of the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 are respectively provided with a plurality of force cones 3110. The driving coil 312 is connected with a power supply 15.

[0050] When the driving coil 312 is connected with a sinusoidal alternating current during operation, a sinusoidal alternating magnetic field can be generated, and based on the principle of electromagnetic induction, the sinusoidal alternating magnetic field can make the iron core 314, the permanent magnet 313, the magnetic cylinder base 316, the magnetic cylinder 317 and the base core 315 move up and down along the guide column 318 in a sinusoidal manner, thereby generating an excitation force. The excitation force generated by the movement is transmitted to the longitudinal wave excitation plate 32 and the fixed bottom plate 311 through the springs 319, and when the longitudinal wave excitation plate 32 is tightly attached to the tunnel side wall, longitudinal wave excitation is performed, and when the transverse wave excitation plate 33 is tightly attached to the tunnel side wall, transverse wave excitation is performed. The force cone 3110 can make the exciter 3 more tightly coupled with the tunnel side wall, and improve the transmission rate of the excitation force.

[0051] By integrating the drive coil 312, the permanent magnet 313, the core 314, the magnetic cylinder base 316, and the magnetic cylinder 317, the gap between the components is significantly reduced, the space utilization is optimized, the design of the exciter 3 is compact, which is conducive to working in a narrow space of a tunnel, and conducive to in-situ switching of the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 in the narrow space of the tunnel. The double buffering mechanism of the guide column 318 and the spring 319 effectively absorbs the motion impact, ensures the smoothness of the excitation force transmission, and increases the contact area between the exciter 3 and the tunnel wall by combining with the force cone 3110 design, further improving the force transmission efficiency and stability. The sine alternating current drive coil generates a magnetic field, which realizes efficient energy conversion and force transmission through the principle of electromagnetic induction, enhances the rigidity of the integrated components, reduces deformation during motion, and ensures accurate transmission of the excitation force.

[0052] One of the working processes or principles of the embodiment is:

[0053] The crawler walking mechanism 11 is controlled by the remote control to move to the tunnel wall excitation point position, the mechanical arm 2 is controlled to adjust the excitation position by lifting and stretching, the longitudinal wave excitation plate 32 is tightly coupled with the tunnel wall excitation point, the longitudinal wave excitation parameters are set, and longitudinal wave excitation is performed. After the longitudinal wave excitation is completed, the body 31 is rotated by 90° through cooperation of the mechanical arm 2 and the rotating mechanism 34, so that the transverse wave excitation plate 33 is tightly coupled with the tunnel wall excitation point, the transverse wave excitation parameters are set, and transverse wave excitation is performed. After the transverse wave excitation is completed, the exciter 3 is retracted through the mechanical arm 2, and the crawler walking mechanism 11 drives the vehicle body 1 to move to the next excitation point.

[0054] The embodiment integrates the longitudinal wave excitation function and the transverse wave excitation function in a single exciter, realizes 90° rapid switching through the rotating mechanism 34, greatly improves the detection efficiency, and ensures that the physical positions of two excitations are completely consistent, thereby improving data comparability. The integrated design significantly reduces the device volume, and the crawler walking mechanism 11 and the multi-degree-of-freedom mechanical arm 2 are combined to move and position more flexibly and conveniently in a narrow space of a tunnel. The mechanical structure directly ensures that the longitudinal wave excitation force is perpendicular to the wall surface and the transverse wave excitation force is parallel to the wall surface, can generate a body wave with a clear polarization direction from the source, effectively suppresses unnecessary wave shape conversion, and improves the original signal quality. The entire excitation mode switching, excitation plate coupling, and signal excitation process can be automatically completed by the control system, which is simple to operate, has good repeatability, and reduces human errors.

[0055] In other embodiments, the exciter of the electromagnetic controllable seismic source can be replaced with a hydraulic exciter, which can be replaced according to requirements. The servo-driven mechanical arm can be replaced with a hydraulic-driven mechanical arm. The crawler vehicle can be replaced with a wheeled vehicle.

[0056] Embodiment 2:

[0057] The embodiment provides an electromagnetic controllable excitation method for longitudinal and transverse wave excitation of a deep-buried tunnel, and uses the electromagnetic controllable excitation device for longitudinal and transverse wave excitation of a deep-buried tunnel as described in the embodiment 1, which comprises that the motor 342 drives the worm 343 to rotate, the worm 343 drives the turbine 344 to rotate, the turbine 344 is rigidly connected with the body 31, the turbine 344 drives the body 31 to rotate by 90 degrees, and the longitudinal wave excitation plate 32 and the transverse wave excitation plate 33 are switched to work. When the longitudinal wave excitation plate 32 is tightly attached to the tunnel side wall, longitudinal wave excitation is performed, and when the transverse wave excitation plate 33 is tightly attached to the tunnel side wall, transverse wave excitation is performed.

[0058] When the driving coil 312 passes through a sinusoidal alternating current, a sinusoidal alternating magnetic field can be generated. Based on the principle of electromagnetic induction, the sinusoidal alternating magnetic field can make the iron core 314, the permanent magnet 313, the magnetic cylinder base 316, the magnetic cylinder 317 and the base core 315 move up and down along the guide column 318 in a sinusoidal manner, so as to generate an excitation force. The excitation force generated by the movement is transmitted to the longitudinal wave excitation plate 32 and the fixed bottom plate 311 through the spring 319, and when the longitudinal wave excitation plate 32 is tightly attached to the tunnel side wall, longitudinal wave excitation is performed, and when the transverse wave excitation plate 33 is tightly attached to the tunnel side wall, transverse wave excitation is performed. The force cone 3110 can make the exciter 3 more closely coupled with the tunnel side wall, and improve the transmission rate of the excitation force.

[0059] The above only provides preferred embodiments of the embodiment and is not used to limit the embodiment. For those skilled in the art, the embodiment can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiment shall be included in the protection scope of the embodiment.

Claims

1. An electromagnetically controllable vibration device for longitudinal and transverse wave vibration of deeply buried tunnels, characterized in that, Includes the vehicle body, and a vibrator mounted on the vehicle body via a robotic arm; The vibrator includes a body, a longitudinal wave excitation plate and a transverse wave excitation plate disposed on the body, and a rotating mechanism disposed on the body; the longitudinal wave excitation plate and the transverse wave excitation plate are perpendicular to each other, and the rotating mechanism is connected to the robotic arm; the rotating mechanism enables the switching of operation of the longitudinal wave excitation plate and the transverse wave excitation plate at the same physical position to perform longitudinal wave and transverse wave excitation. The main body includes a fixed base plate connected to the rotating mechanism; a drive coil is provided on the fixed base plate, a permanent magnet and an iron core are provided inside the drive coil, a base core is provided at the end of the iron core away from the fixed base plate, the base core is connected to a magnetic cylinder base, and a magnetic cylinder is provided outside the drive coil; the iron core, the permanent magnet, the magnetic cylinder base, the magnetic cylinder and the base core are assembled as one unit; the magnetic cylinder base and the magnetic cylinder are provided with through holes, and a guide post is slidably arranged in the through holes, the two ends of the guide post being connected to the fixed base plate and the longitudinal wave excitation plate respectively; springs are respectively sleeved on the two ends of the guide post, the two ends of one spring being connected to the longitudinal wave excitation plate and the magnetic cylinder base respectively, and the two ends of the other spring being connected to the fixed base plate and the magnetic cylinder respectively.

2. The electromagnetically controllable vibration device for longitudinal and transverse wave vibration of deeply buried tunnels as described in claim 1, characterized in that, The vehicle body is equipped with a tracked walking mechanism, radar, power amplifier, controller, power supply, camera, antenna and GPS locator, and the controller is connected to a remote controller via the antenna.

3. The electromagnetically controllable vibration device for longitudinal and transverse wave vibration of deeply buried tunnels as described in claim 2, characterized in that, The tracked traveling mechanism includes a drive wheel mounted on the vehicle body, a load-bearing wheel, a transition wheel and a track support wheel mounted on the vehicle body, a tension wheel mounted on the vehicle body, and tracks.

4. The electromagnetically controllable vibration device for longitudinal and transverse wave vibration of deeply buried tunnels as described in claim 1, characterized in that, The rotating mechanism includes a base connected to the robotic arm, a motor and a turbine mounted on the base, and a worm gear meshing with the turbine on the output shaft of the motor; the turbine is connected to the main body via a connecting shaft.

5. The electromagnetically controllable vibration device for longitudinal and transverse wave vibration of deeply buried tunnels as described in claim 1, characterized in that, The permanent magnet has an iron core at each end.

6. The electromagnetically controllable vibration device for longitudinal and transverse wave vibration of deep-buried tunnels as described in claim 1, characterized in that, Multiple force cones are provided on the outer surfaces of both the longitudinal wave excitation plate and the transverse wave excitation plate.

7. An electromagnetically controlled excitation method for longitudinal and transverse wave vibration in deep-buried tunnels, characterized in that, The electromagnetically controllable excitation device for longitudinal and transverse wave excitation of deep-buried tunnels as described in any one of claims 1-6 is used, comprising: switching the operation of longitudinal wave excitation plate and transverse wave excitation plate at the same physical position through a rotating mechanism to excite longitudinal waves and transverse waves.

8. The electromagnetically controlled excitation method for longitudinal and transverse wave vibration of deeply buried tunnels as described in claim 7, characterized in that, A sinusoidal alternating current is applied to the drive coil to generate a sinusoidal alternating magnetic field. The sinusoidal alternating magnetic field causes the iron core, permanent magnet, magnetic cylinder base, magnetic cylinder and base core to move up and down along the guide column in a sinusoidal motion, generating an excitation force. The excitation force generated by the motion is transmitted to the longitudinal wave excitation plate and the fixed base plate through the spring. When the longitudinal wave excitation plate is in close contact with the tunnel sidewall, longitudinal wave excitation is performed. When the transverse wave excitation plate is in close contact with the tunnel sidewall, transverse wave excitation is performed.

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