Seismic wave imaging source device and seismic wave imaging radar system

Abstract

The application provides a seismic wave imaging seismic source device and a seismic wave imaging radar system, and relates to the technical field of geological detection.The seismic wave imaging seismic source device comprises a hub and at least one protruding block arranged on the rotating surface of the hub;each protruding block is provided with a gradient piece correspondingly;the hub, the protruding block and the gradient piece are assembled to form a wheeled seismic source.The seismic wave imaging seismic source device is used for cooperating with a power vehicle of the seismic wave imaging radar system to provide a seismic source for detecting road hazards during the travel of the power vehicle.The seismic wave imaging seismic source device and the seismic wave imaging radar system can cooperate with the power vehicle of the seismic wave imaging radar system to realize the excitation of the seismic source during the travel, achieve the purpose of rapid detection, and improve the detection efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of geological testing, and in particular to a seismic wave imaging source device and a seismic wave imaging radar system. Background Technology

[0002] Seismic imaging is a commonly used shallow seismic exploration method. It interprets and infers underground geological structures based on changes in energy, frequency, discontinuity, and disappearance of phase axes of various waves. It is particularly effective in inferring the geological inhomogeneity of homogeneous structures. Therefore, it is applied to the detection of road defects.

[0003] Currently, various types of seismic sources are used in seismic imaging methods. Well-known seismic wave imaging sources include: sledgehammer striking, mechanical impact, pneumatic hammer, electric hammer, and spring hammer. However, these sources all operate through instantaneous static excitation, resulting in long excitation intervals, which are difficult to adapt to the requirements of rapid detection. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a seismic wave imaging source device and a seismic wave imaging radar system to alleviate the above-mentioned technical problems.

[0005] In a first aspect, embodiments of the present invention provide a seismic wave imaging source device, comprising: a wheel hub, and at least one protrusion disposed on the rotating surface of the wheel hub; each protrusion is correspondingly provided with a gradient element; the wheel hub, the protrusion, and the gradient element are assembled to form a wheel-type seismic source, the seismic wave imaging source device being used in conjunction with a power vehicle of a seismic wave imaging radar system to provide a seismic source to detect road hazards during the movement of the power vehicle.

[0006] In conjunction with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the protrusion and the gradient member are disposed on the rotating surface of the hub; on the side away from the hub, the gradient member gradually protrudes outward from one end to the other along the radial direction of the hub until it is tangent to the top of the protrusion.

[0007] In conjunction with the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the above-mentioned seismic wave imaging source device further includes a shock-absorbing pad disposed between the protrusion and the hub.

[0008] In conjunction with the second possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the hub, the protrusion, the gradient member and the shock-absorbing pad are detachably connected.

[0009] In conjunction with the third possible implementation of the first aspect, this embodiment of the invention provides a fourth possible implementation of the first aspect, wherein the protrusion and the damping pad are provided with fixing holes; the protrusion and the damping pad are fixed to the rotating surface of the hub by screws passing through the fixing holes.

[0010] In conjunction with the first aspect, the present invention provides a fifth possible implementation of the first aspect, wherein the aforementioned wheel hub, the protrusion, and the gradient component are integrally formed.

[0011] In conjunction with the first aspect, this embodiment of the invention provides a sixth possible implementation of the first aspect, wherein a mounting structure is provided at the center of the aforementioned wheel hub; the mounting structure is used to assemble the seismic wave imaging source device with the power vehicle.

[0012] Secondly, embodiments of the present invention also provide a seismic wave imaging radar system, which includes a power vehicle, a positioning device, a seismic wave receiving device, and the seismic wave imaging source device described in the first aspect; the seismic wave imaging radar system is used to detect geological hazards under the ground during the movement of the power vehicle.

[0013] In conjunction with the second aspect, the present invention provides a first possible implementation of the second aspect, wherein the seismic wave imaging source device is assembled with the power vehicle as a wheel.

[0014] In conjunction with the second aspect, the present invention provides a first possible implementation of the second aspect, wherein the seismic wave imaging radar system further includes a retractable support; the seismic wave imaging source device is mounted on the retractable support and is towed to the rear of the vehicle via the retractable support.

[0015] The embodiments of the present invention bring the following beneficial effects:

[0016] The seismic wave imaging source device and seismic wave imaging radar system provided in this embodiment of the invention include a hub and at least one protrusion on the rotating surface of the hub. Each protrusion is provided with a gradient component. The hub, protrusion, and gradient component are assembled to form a wheeled seismic source. The seismic wave imaging source device is used in conjunction with a motor vehicle of the seismic wave imaging radar system to provide a seismic source to detect road hazards while the motor vehicle is in motion. Compared with the common static excitation method, the seismic wave imaging source device and seismic wave imaging radar system provided in this embodiment of the invention can achieve seismic source excitation during the movement of the vehicle by cooperating with the motor vehicle of the seismic wave imaging radar system, thereby achieving the purpose of rapid detection and improving detection efficiency.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained in accordance with the structures particularly pointed out in the description, claims and drawings.

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a seismic wave imaging source device provided in an embodiment of the present invention;

[0021] Figure 2 This is a partially enlarged schematic diagram of a seismic wave imaging source device provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of another seismic wave imaging source device provided in an embodiment of the present invention;

[0023] Figure 4 A structural block diagram of a seismic wave imaging radar system provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a seismic wave imaging radar system provided in an embodiment of the present invention.

[0025] Icons: 101-Wheel hub; 102-Protrusion block; 103-Gradient component; 301-Shock damping pad; 302-Mounting structure; 401-Power vehicle; 402-Positioning device; 403-Seismic wave receiving device; 404-Seismic wave imaging source device; 405-Retractable bracket. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Currently, known seismic wave imaging sources include: sledgehammer strikes, mechanical impacts, pneumatic hammers, electric hammers, and spring hammers. However, these sources all employ instantaneous static excitation methods with long excitation intervals, which are unsuitable for the rapid detection requirements of modern urban roads. Therefore, this invention provides a seismic wave imaging source device and a seismic wave imaging radar system to alleviate the aforementioned technical problems.

[0028] To facilitate understanding of this embodiment, a seismic wave imaging source device disclosed in this embodiment of the invention will first be described in detail.

[0029] In one possible implementation, the present invention provides a seismic wave imaging source device, comprising: a hub, and at least one protrusion disposed on the rotating surface of the hub; each protrusion is correspondingly provided with a gradient element; the hub, the protrusion, and the gradient element are assembled to form a wheeled seismic source, and the seismic wave imaging source device is used to cooperate with a power vehicle of a seismic wave imaging radar system to provide a seismic source to detect road hazards during the movement of the power vehicle.

[0030] For ease of understanding, Figure 1 A schematic diagram of a seismic wave imaging source device is shown, and for ease of explanation, Figure 1 The following example illustrates the use of four protrusions on the rotating surface of a wheel hub. Figure 1 As shown, it includes a hub 101, a protrusion 102, and a gradient component 103.

[0031] In practical use, the seismic wave imaging source device provided in this embodiment of the invention is usually used as the source excitation of the seismic wave imaging radar system. Correspondingly, the seismic wave imaging radar system is also equipped with a seismic wave receiving device and a positioning device. The seismic wave imaging source device, the seismic wave receiving device and the positioning device are assembled with the power vehicle in a detachable manner and connected to the acquisition instrument on the power vehicle through a communication cable to form a vehicle-mounted seismic wave imaging radar system.

[0032] In specific implementation, the seismic wave imaging source device provided in this embodiment of the invention is used to generate seismic wave signals during the road hazard detection process. The seismic wave receiving device is used to receive the seismic wave signals generated by the above-mentioned excitation device and transmit the received signals to the acquisition instrument. The positioning device is used to determine the location information of the detection process. Therefore, the seismic wave imaging source device provided in this embodiment of the invention can cooperate with the power vehicle of the seismic wave imaging radar system to provide a seismic source to detect road hazards during the movement of the power vehicle.

[0033] The seismic wave imaging source device provided in this embodiment of the invention includes a hub and at least one protrusion on the rotating surface of the hub; each protrusion is correspondingly provided with a gradient component; the hub, protrusion, and gradient component are assembled to form a wheeled seismic source. The seismic wave imaging source device is used in conjunction with a power vehicle of a seismic wave imaging radar system to provide a seismic source to detect road hazards while the power vehicle is in motion. Compared with the common static excitation method, the seismic wave imaging source device and seismic wave imaging radar system provided in this embodiment of the invention can achieve seismic source excitation during the movement of the vehicle by cooperating with the power vehicle of the seismic wave imaging radar system, thereby achieving the purpose of rapid detection and improving detection efficiency.

[0034] In actual use, the protrusion and gradient component of the aforementioned seismic wave imaging source device are arranged on the rotating surface of the hub; and on the side away from the hub, the gradient component gradually protrudes outward from one end to the other along the radial direction of the hub until it is tangent to the top of the protrusion.

[0035] For ease of understanding, Figure 1 On this basis, Figure 2 A partially enlarged schematic diagram of a seismic wave imaging source device is shown, and... Figure 2 The structure of the gradient element 103 is mainly shown in the image. Figure 2 In the diagram, the slanted area represents one of the gradient components. The side of the gradient component closer to curve AB is the side furthest from the wheel hub, and is composed of... Figure 2 As can be seen from the direction indicated by the arrow on the middle curve AB, the gradient component gradually protrudes outward along the radial direction of the hub on the side close to curve AB, forming an arc shape, until it is tangent to the top of the protrusion, so that the seismic wave imaging source device provided in this embodiment of the invention forms a wheel-type source.

[0036] In the seismic wave imaging radar system, the seismic wave imaging source device provided in this embodiment of the invention has a wheeled source structure. Therefore, the seismic wave imaging source device provided in this embodiment of the invention can be assembled with the power vehicle as a wheel, or it can be set on a telescopic bracket and towed to the rear of the power vehicle by the telescopic bracket and dragged forward by the power vehicle. During the forward movement, the seismic wave imaging source device is dragged forward by the power vehicle and generates seismic wave signals by exciting the ground with the protrusions on the wheel hub during rotation.

[0037] The gradient component can play a certain guiding and buffering role during the rotation of the hub, so as to reduce the interference of the vibration generated by the hub contacting the ground with the effective seismic wave signal generated by the vibration of the protrusion contacting the ground.

[0038] In practical use, the number of protrusions determines the number of seismic pulse sources. A higher number of seismic pulse sources results in a shorter seismic wave acquisition time and a shallower detection depth. For ease of explanation, Figure 1 In this example, four protrusions are used for illustration. It should be understood that in other embodiments, the number of protrusions is not limited to four. Generally, as long as the seismic wave signal is stimulated 1-20 times per second, the actual detection requirements can be met. The specific number and spacing of the protrusions can be set according to the actual detection requirements. This embodiment of the invention does not limit this.

[0039] Furthermore, the seismic wave imaging source device provided in this embodiment of the invention also includes a damping pad disposed between the protrusion and the hub. For ease of understanding, in Figure 1 On this basis, Figure 3 A schematic diagram of another seismic wave imaging source device is also shown, except... Figure 1 The structure shown, Figure 3 The image also shows the shock-absorbing pad 301.

[0040] Specifically, the wheel hub, raised block, gradient component and shock absorber are detachably connected and can be assembled into a whole to form a wheel-type vibration source for detecting road hazards, thereby providing a vibration source to detect road hazards during the movement of the vehicle.

[0041] Furthermore, the aforementioned protrusions and damping pads are provided with fixing holes; the protrusions and damping pads are fixed to the rotating surface of the hub by screws passing through the fixing holes.

[0042] In practical use, the aforementioned shock-absorbing pads can be rubber pads. On one hand, installing rubber pads allows for a better fit between the raised block and the wheel hub; on the other hand, the rubber pads act as shock absorbers, reducing or preventing interference from wheel hub vibrations on the effective seismic wave signals generated by the raised block's contact with the ground. Furthermore, the raised block and shock-absorbing pads are fixed to the wheel hub with screws, effectively forming a unified structure and increasing overall structural stability.

[0043] Furthermore, the aforementioned gradient component can also be fixed to the wheel hub using screws. Alternatively, the gradient component can be fixed to the wheel hub using adhesive. The specific fixing method can be set according to the actual usage situation, and the embodiments of the present invention do not limit this.

[0044] In addition to the aforementioned assembly method where the hub, protrusion, gradient component, and shock-absorbing pad are detachably connected, the hub, protrusion, and gradient component can also be integrated into a single design, i.e., the hub, protrusion, and gradient component are integrally formed. Furthermore, any two structures among the hub, protrusion, and gradient component can be integrated into a single design, i.e., the hub and protrusion are integrally formed and detachably connected to the gradient component, or the protrusion and gradient component are integrally formed and detachably connected to the hub, or the hub and gradient component are integrally formed and detachably connected to the protrusion. The specific design method can be set according to the actual usage, and the embodiments of the present invention do not limit this.

[0045] Furthermore, such as Figure 3 As shown, a mounting structure 302 is provided at the center of the wheel hub, which is used to assemble the seismic wave imaging source device with the power vehicle.

[0046] In practice, the installation structure may include bearing components and other structures to ensure that the seismic wave imaging source device can rotate and move forward after being assembled with the power vehicle.

[0047] Furthermore, based on the above embodiments, this invention also provides a seismic wave imaging radar system. For ease of understanding, Figure 4 A structural block diagram of a seismic wave imaging radar system is shown, such as... Figure 4 As shown, the seismic wave imaging radar system includes a power vehicle 401, a positioning device 402, a seismic wave receiving device 403, and the aforementioned seismic wave imaging source device 404. In specific implementation, the seismic wave imaging radar system is used to detect geological hazards underground during the movement of the power vehicle.

[0048] In practical use, the seismic wave imaging source device is assembled from a hub, protrusions, and gradient components to form a wheeled source. Therefore, the seismic wave imaging source device can be assembled with a motor vehicle as a wheel. Alternatively, the seismic wave imaging radar system can also be equipped with a retractable support; the seismic wave imaging source device is mounted on the retractable support and towed to the rear of a motor vehicle. That is, the seismic wave imaging source device is usually designed in a wheeled manner, so that it can be used as a wheel of a motor vehicle or towed to the rear of a motor vehicle.

[0049] Furthermore, corresponding to the wheel-type design of the seismic wave imaging source device, the seismic wave receiving device in the above-mentioned seismic wave imaging radar system can also be configured in a wheel-type manner. In addition, the seismic wave receiving device in the seismic wave imaging radar system can be one or multiple. That is, a seismic wave imaging radar system can be designed with at least one seismic wave receiving device. The specific configuration of the seismic wave receiving device can be configured according to the actual use situation, and the embodiments of the present invention do not impose any restrictions on this.

[0050] For ease of understanding, Figure 5 A schematic diagram of a seismic wave imaging radar system is shown, wherein, Figure 5 The example given is a seismic wave imaging source device towed to the rear of a motor vehicle via a retractable bracket. Furthermore, the seismic wave imaging radar system includes a seismic wave receiving device. Figure 5 As shown, the seismic wave imaging radar system includes a power vehicle 401, a positioning device 402, a seismic wave receiving device 403, a seismic wave imaging source device 404, and a telescopic bracket 405. The positioning device is detachably installed at the midpoint between the seismic wave receiving device and the seismic wave imaging source device. This midpoint is the location of the exploration point where one excitation and one reception occur. The positioning device typically uses GPS (Global Positioning System) and BeiDou dual-mode positioning to improve positioning accuracy. Furthermore, the aforementioned seismic wave receiving device is typically equipped with a seismic wave sensor to facilitate the reception of seismic wave signals.

[0051] based on Figure 5 The number of excitation pulses in the seismic wave imaging radar system shown is determined by the number of protrusions on the seismic wave imaging source device and the rotational speed of the vehicle's wheels. Furthermore, the spacing between the protrusions should meet the requirements for detecting the depth of road hazards, for example, exciting 1-20 seismic wave signals per second. During vehicle movement, the protrusions of the seismic wave imaging source device directly or indirectly excite the ground, generating seismic wave signals. The intensity of the source (seismic wave signal) is related to the mass and rotational speed of the protrusions. In addition, the mounting structure between the seismic wave imaging source device and the vehicle typically includes a resonance suppression device to reduce vibration and prevent or minimize vehicle jolting during movement.

[0052] In practical use, the vehicle speed, the number of protrusions, and the vibration intensity can control the detection depth. Generally, the greater the vehicle speed and the greater the vibration intensity, the greater the detection depth. For example, taking a 5-meter depth measurement as an example, with 5 protrusions installed on the wheel hub and the seismic wave image source device rotating 2 revolutions per second, the detection speed can reach 10 kilometers per hour or more. Therefore, in order to meet the detection requirements, the vehicle speed, the number of protrusions, and the vibration intensity can all be set according to the actual situation, and the embodiments of the present invention do not impose any restrictions on this.

[0053] The seismic wave imaging radar system provided in this embodiment of the invention has the same technical features as the seismic wave imaging source device provided in the above embodiments, so it can also solve the same technical problems and achieve the same technical effects.

[0054] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the seismic wave imaging radar system described above can be referred to the corresponding process in the foregoing embodiments, and will not be repeated here.

[0055] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0056] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0057] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0058] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A seismic wave imaging seismic source apparatus, characterized by, The application relates to a seismic wave imaging source device, which comprises a hub and at least one protruding block arranged on the rotating surface of the hub. The protruding block directly or indirectly excites the ground to generate seismic wave signals. Each protruding block is provided with a gradient part. The hub, the protruding block and the gradient part are assembled to form a wheel-type seismic source. The seismic wave imaging source device is used in cooperation with a power vehicle of a seismic wave imaging radar system to provide a seismic source for detecting road hidden dangers during the running of the power vehicle. The protruding block and the gradient part are arranged on the rotating surface of the hub. On the side away from the hub, the gradient part gradually protrudes outward along the radial direction of the hub from one end to the other end to form a circular arc until the top end of the protruding block is tangent to the gradient part.

2. The seismic wave imaging source apparatus of claim 1, wherein, The gradient part plays a guiding and buffering role during the rotation of the hub to reduce the interference of the vibration generated by the hub contacting the ground on the effective seismic wave signals generated by the protruding block contacting the ground.

3. The seismic wave imaging source apparatus of claim 2, wherein, The seismic wave imaging source device further comprises a damping pad arranged between the protruding block and the hub.

4. The seismic wave imaging source apparatus of claim 3, wherein, The hub, the protruding block, the gradient part and the damping pad are detachably connected. The protruding block and the damping pad are provided with fixing holes.

5. The seismic wave imaging source apparatus of claim 1, wherein, The protruding block and the damping pad are fixed to the rotating surface of the hub through screws penetrating the fixing holes.

6. The seismic wave imaging source apparatus of claim 1, wherein, The hub, the protruding block and the gradient part are integrally formed. The hub is provided with a mounting structure at the center position.

7. A seismic wave imaging radar system characterized by, The mounting structure is used for assembling the seismic wave imaging source device with the power vehicle. The seismic wave imaging radar system comprises a power vehicle, a positioning device, a seismic wave receiving device and the seismic wave imaging source device according to any one of claims 1-6.

8. The seismic wave imaging radar system of claim 7, wherein, The seismic wave imaging radar system is used for detecting geological hidden dangers under the ground during the running of the power vehicle.

9. The seismic wave imaging radar system of claim 7, wherein, The seismic wave imaging source device is assembled with the power vehicle as the wheel of the power vehicle. The seismic wave imaging radar system further comprises a telescopic support. The seismic wave imaging source device is arranged on the telescopic support and is towed at the tail of the power vehicle through the telescopic support.

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