Anti-interference seismic wave detector

Abstract

The utility model provides an anti-interference earthquake detection wave detector comprising a sensor used for receiving earthquake reflection waves, the sensor is connected with a cable, the cable is slidably provided with an elastic anti-noise structure, and the anti-noise structure is sleeved on the cable. The utility model can effectively shield tunnel noise interference.

Description

Technical Field

[0001] The utility model belongs to the technical field of geological survey, and particularly relates to an anti-interference earthquake detection wave device. Background Art

[0002] During the excavation of tunnels (holes), there are threats such as karst, mud and water inrush, faults, and landslides, which seriously affect the life safety of people and equipment. Advanced geological prediction is an effective way to solve this problem, and it has also become an indispensable process in the construction of tunnels (holes). At present, common advanced geological prediction methods include seismic wave method, geological radar method, electrical method, transient electromagnetic method, etc. Among them, the most widely used are the TGP method and TST method of seismic wave reflection method. The means of using seismic wave reflection method for advanced geological prediction is: put a seismic detector in the prepared borehole in advance, and use the seismic detector to receive seismic reflection waves. In order to prevent the noise generated during the construction process from interfering with the waveform acquisition, some measures need to be taken on site. The current commonly used method is to seal the hole with yellow mud or butter. However, due to the complex tunnel construction environment and the many and widespread noise interference sources, the use of yellow mud or butter for sealing has limited interference shielding ability, which will lead to a decrease in the signal-to-noise ratio of the original record, causing serious interference to the subsequent wave field separation and migration imaging work, affecting the detection accuracy; secondly, sealing materials are not easy to obtain, and the use of butter and yellow mud for sealing will greatly increase the engineering cost and time cost, seriously affecting work efficiency. Utility Model Content

[0003] The utility model aims to provide an anti-interference earthquake detection wave device, which can effectively shield the interference of tunnel noise.

[0004] The utility model is realized by the following technical solutions:

[0005] An anti-interference earthquake detector includes a sensor for receiving earthquake reflection waves, the sensor is connected to a cable, an elastic anti-noise structure is slidably provided on the cable, and the anti-noise structure is sleeved on the cable.

[0006] Furthermore, the noise-proof structure is a sound-absorbing block made of sound-absorbing material.

[0007] Furthermore, the sound absorbing material is a sound absorbing sponge.

[0008] Furthermore, it also includes a fixing clamp, and the position of the fixing clamp is adjustably mounted on the cable.

[0009] Furthermore, the fixing clip is an A-shaped clip.

[0010] Furthermore, a plug connector for plugging and unplugging connection with a seismic line is provided on one end of the cable away from the sensor.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the anti-noise structure is elastic and can fit tightly with the borehole opening, so that the anti-noise structure on the cable is used to block the borehole opening, effectively shielding tunnel noise interference, obtaining high signal-to-noise ratio data, and providing high signal-to-noise ratio signals for subsequent data processing and analysis, thereby improving the detection accuracy of advanced geological forecasting; and there is no need for sealing with yellow mud, blister mud, anchoring agents, butter, etc., thereby improving work efficiency, saving costs, and having economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the anti-interference earthquake detection wave device of the utility model;

[0013] Figure 2 It is a cross-sectional schematic diagram of the anti-interference earthquake detection wave device of the utility model when it is working.

[0014] In the figure, 1-sensor, 2-cable, 3-noise-proof structure, 4-fixing clamp, 5-plug connector, 6-drill hole, 7-surrounding rock. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present utility model, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0018] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0019] In the description of the present utility model, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0020] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the utility model anti-interference earthquake detection wave device. Figure 2 The schematic cross-sectional view of the anti-interference earthquake detector of the utility model when it is working. The anti-interference earthquake detector comprises a sensor 1 for receiving earthquake reflection waves, a cable 2 is connected to the sensor 1, an elastic anti-noise structure 3 is slidably provided on the cable 2, and the anti-noise structure 3 is sleeved on the cable 2.

[0021] When the utility model anti-interference seismic detector is working, the staff puts the sensor 1 into the prepared borehole 6, couples the sensor 1 with the surrounding rock 7, and leaves the cable 2 outside the borehole 6. Then the anti-noise structure 3 is moved along the cable 2 to the borehole 6 opening, and the anti-noise structure 3 is inserted into the borehole 6 opening. Since the size of the anti-noise structure 3 is larger than the size of the borehole 6 opening, and the anti-noise structure 3 is elastic and retractable, the anti-noise structure 3 can fit tightly with the borehole 6 opening, thereby blocking the borehole 6 opening, having a good anti-noise effect, and effectively shielding the noise interference of the tunnel. Then the cable 2 is connected to the seismic line, and the seismic line is connected to the host, and then blasting and data collection can be carried out.

[0022] In one embodiment, the noise-proof structure 3 is a sound-absorbing block made of a sound-absorbing material. The noise-proof structure 3 is simple to manufacture, the material is readily available, and the noise-proof structure 3 can be detached from the cable 2 for easy storage and carrying. Preferably, the sound-absorbing block is a cylindrical structure. In one embodiment, the sound-absorbing material is a sound-absorbing sponge. The sound-absorbing sponge is light and easy to carry. It is filled with tiny gaps inside. The porous structure can absorb a large amount of incident sound wave energy, which has an attenuation effect on the sound waves. The sound-absorbing effect is excellent, and the sound absorption coefficient is as high as 0.85. The sound-absorbing sponge is soft in texture. The sound-absorbing sponge material is made into a cylinder with a diameter larger than the borehole 6. It can be easily compressed and inserted into the borehole 6. Its expansion force can also make the sound-absorbing sponge fit tightly with the hole wall to seal the borehole 6 tightly, thereby preventing noise from leaking out due to loose sealing.

[0023] In order to prevent the anti-noise structure 3 from falling off from the borehole 6 during operation, in one embodiment, a fixing clamp 4 is further included, and the fixing clamp 4 is installed on the cable 2 in an adjustable position. During operation, the fixing clamp 4 is installed on the cable 2, and the fixing clamp 4 is abutted against the side of the anti-noise structure 3 away from the borehole 6 to limit the position of the anti-noise structure 3, thereby preventing the anti-noise structure 3 from falling off from the borehole 6 during operation. In one embodiment, the fixing clamp 4 is an A-shaped clamp. The A-shaped clamp has anti-slip corrugated teeth at the fixing part, which can increase the friction between the fixing clamp 4 and the cable 2, so that the fixing clamp 4 can be firmly clamped on the cable 2.

[0024] In order to facilitate the connection of the cable 2 with the seismic line, in one embodiment, a plug connector 5 for plugging and unplugging the cable 2 with the seismic line is provided on the end of the cable 2 away from the sensor 1. The cable 2 and the seismic line are connected by the plug connector 5, which is convenient for disassembly and assembly.

[0025] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An anti-interference earthquake detector, characterized in that: The invention comprises a sensor for receiving seismic reflection waves, the sensor is connected with a cable, an elastic anti-noise structure is slidably provided on the cable, and the anti-noise structure is sleeved on the cable.

2. The anti-interference earthquake detector according to claim 1, characterized in that: The anti-noise structure is a sound-absorbing block made of sound-absorbing material.

3. The anti-interference earthquake detector according to claim 2, characterized in that: The sound absorbing material is a sound absorbing sponge.

4. The anti-interference earthquake detector according to claim 1, characterized in that: The invention also comprises a fixing clip, wherein the position of the fixing clip is adjustably mounted on the cable.

5. The anti-interference earthquake detector according to claim 4, characterized in that: The fixing clip is an A-shaped clip.

6. The anti-interference earthquake detector according to claim 1, characterized in that: The end of the cable away from the sensor is provided with a plug-in connector for plug-in connection with the seismic line.

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