CN117406363A - Wiring device and method for shallow seismic exploration based on optical fiber acoustic wave sensing - Google Patents

Abstract

The invention discloses a wiring device and a wiring method for shallow seismic exploration based on optical fiber acoustic wave sensing, which belong to the technical field of geological exploration and comprise a walking frame and further comprise the following steps: the first transmission belts are connected with the first motor through belt transmission, and fixed barrels are arranged on the first transmission belts at equal intervals; the pretreatment component is fixedly arranged on one side of the walking frame, far away from the first transmission belt, a road flat area is selected during wiring, two sides of the walking frame are manually pushed to advance, the first motor is started, the output end of the first motor drives the first transmission belt to rotate through a belt, a fixed barrel on the first transmission belt is in contact with soil and is reclaimed, a groove with the depth of about 10cm is formed, optical fibers are arranged in the groove, the coupling of the optical fibers to the ground can be kept, the influence of surface acoustics is reduced, then soil is manually filled back and compacted, and wiring is completed.

Description

Wiring device and method for shallow seismic exploration based on optical fiber acoustic wave sensing

Technical Field

The invention relates to the technical field of geological exploration, in particular to a wiring device and method for shallow seismic exploration based on optical fiber acoustic wave sensing.

Background

So far, earthquake disasters in urban areas have caused huge life and property losses all over the world, near-surface active faults form a great threat to urban safety, and the ability to accurately detect active faults, particularly underground faults of cities, is of great importance to urban planning and earthquake prediction.

For active fault exploration, one approach to improving near-surface active fault resolution is to use array geometries with small receiver spacing, while rapid developments in node seismometers may allow for recording of these data at small scale sites, however, in practice, the exact location of the active faults is not clear, and we typically need to deploy an array large enough to adequately capture the spatially distributed features of the target region so that the location of the fault can be precisely determined. This is economically unfeasible because the cost of the node seismograph is still high.

It was later expected that DAS would replace geophones. Because the DAS has the characteristics of higher space density sampling, high-resolution imaging of the interface around the well can be realized, but a section of groove with the depth of about 10cm is needed to be reclaimed in an installation area during DAS installation, plants above soil can influence judgment of workers on a reclamation route during reclamation, weeds are cleared firstly, and then reclamation work is carried out, so that the efficiency is lower.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, a groove with a depth of about 10cm is needed to be reclaimed for a mounting area during DAS mounting, plants above soil can influence judgment of workers on a reclamation route during reclamation, weeds are cleared firstly and then reclamation work is carried out, and efficiency is low.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the utility model provides a shallow layer seismic prospecting wiring arrangement based on optic fibre acoustic wave sensing, includes the walking frame, fixed mounting has the backup pad on the walking frame, be equipped with first motor and optical fiber dish in the backup pad, the winding has optic fibre on the optical fiber dish, still includes: the device comprises two symmetrically arranged first guard plates, a first transmission belt is rotatably arranged between the two first guard plates, the first transmission belt is connected with a first motor through belt transmission, and fixed barrels are equidistantly arranged on the first transmission belt; the pretreatment component is fixedly arranged on one side, far away from the first conveying belt, of the walking frame and is used for cleaning weeds on the soil surface.

In order to gather weeds in front of the travelling frame to one side of the travelling frame, preferably, the pretreatment assembly comprises: the two symmetrically arranged extension rods are rotatably provided with second guard plates, a second conveyer belt is rotatably arranged between the two second guard plates, and the second conveyer belt is in transmission connection with the first motor through a belt; the guide rake is rotatably arranged between the two second guard plates, and the guide rake is connected with the second conveying belt through a belt in a transmission way; the cutting frame is fixedly arranged between the two second guard plates and is positioned at the input end of the second conveying belt; the first box body is slidably mounted in the walking frame and is positioned at the output end of the second conveying belt.

For cutting weeds, further, the cutting rack comprises: the sliding rail seat is fixedly arranged between the two second guard plates, an upper blade is fixedly arranged on the sliding rail seat, two symmetrically arranged sliding blocks are slidably arranged in the sliding rail seat, and a lower blade is fixedly arranged between the two sliding blocks; the supporting wheels are rotatably arranged on the outer side of the second guard plate, and wedge-shaped blocks are equidistantly arranged on the inner wall of the supporting wheels along the circumferential direction; one side of the sliding block, which is close to the inner wall of the sliding rail seat, is fixedly provided with a first horizontal rod, and one end of the first horizontal rod penetrates through the sliding rail seat and abuts against the wedge-shaped block.

To drain the collected soil to one side of the trench, convenient backfilling preferably further comprises: the lower ends of the guide rods penetrate through the supporting plate and are fixedly connected with the first box body, and the upper ends of the guide rods penetrate through the supporting plate and are fixedly provided with connecting plates; the second box body is arranged between the guide rods in a sliding mode, the second box body is located above the first box body, and the conveying auger is fixedly arranged on the first box body.

In order to lift the second box, conveniently receive soil, further, fixed mounting has first rack on the joint board, fixed mounting has the second rack on the first box, the upper end of second rack runs through out the backup pad, just rotate between first rack and the second rack and install the third gear.

In order to facilitate the reset of the first box body and the second box body, further, the guide rod is sleeved with a first spring, and two ends of the first spring are fixedly connected with the support plate and the connecting plate respectively.

For transporting the optical fiber, it is preferable to further include: the baffle is fixedly arranged on the walking frame and is positioned above the first conveying belt; the baffle is fixedly provided with a wire rail, two symmetrically arranged driving wheels are rotatably arranged on the wire rail, a second gear is coaxially arranged on the driving wheels, the baffle is fixedly provided with a second motor, and the output end of the second motor is fixedly provided with a notch gear which can be meshed and connected with the second gear.

In order to improve the stability of the walking frame during operation, preferably, one end of the walking frame, which is close to the ground, is fixedly provided with a second horizontal rod, two ends of the second horizontal rod are provided with elastic rods in a threaded manner, and the lower ends of the elastic rods are fixedly provided with universal wheels.

In order to pour the soil in the fixed barrel into the second box body, preferably, a connecting shaft is fixedly arranged on the first transmission belt, the fixed barrel is rotatably arranged on the connecting shaft, and a torsion spring is fixedly arranged between the fixed barrel and the connecting shaft; one end of the connecting shaft is fixedly provided with a fourth gear, and the walking frame is fixedly provided with a third rack which can be meshed and connected with the fourth gear.

The wiring method for shallow seismic exploration based on optical fiber acoustic wave sensing comprises the following operation steps:

step 1: placing the device at an active fault;

step 2: a groove with the depth of about 10cm is reclaimed at the movable fault, and an optical fiber is placed in the groove;

step 3: the earth is manually filled back into the trench and compacted.

Compared with the prior art, the invention provides the wiring device and the wiring method for the shallow seismic exploration based on the optical fiber acoustic wave sensing, which have the following beneficial effects:

1. according to the wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing, in order to prevent weeds on soil from interfering with road judgment when a groove is reclaimed, during the working period of a first motor, a second conveying belt is driven by a belt to rotate, the rotating force is transmitted to a guide rake again through the belt to enable the guide rake to rotate, weeds in front of a walking frame are laid to one side of the second conveying belt, meanwhile, a rotating supporting wheel continuously pushes a first horizontal rod through a wedge-shaped block on the inner wall, a blade is driven by the first horizontal rod to slide back and forth in a slide rail seat so as to cut off and convey weed roots into a first box body, meanwhile, an output end of the first motor is driven by the belt to rotate, a fixed barrel on the first conveying belt is contacted with soil and reclaimed, a groove with the depth of about 10cm is formed, optical fibers are placed in the groove, the coupling of the optical fibers to the ground can be maintained, the influence of surface acoustic waves is reduced, then the soil is filled manually and compacted, wiring is completed, and efficiency is improved;

2. according to the wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing, weeds are contained in the first box body and then sink along with the action of gravity, meanwhile, the first rack on the connecting plate drives the third gear in meshed connection to rotate, the rotating third gear drives the second rack in meshed connection to move reversely, so that the second box body rises and moves to the output end of the first conveying belt to be used for receiving reclaimed soil, two symmetrically arranged crushing rollers are additionally arranged at the opening of the second box body, stones in the soil can be crushed, the conveying auger is prevented from being blocked, the crushed soil is conveyed to one side of a groove by the conveying auger, backfilling is facilitated for workers, and after the reclamation is finished, the first box body and the second box body return to the initial position, and manual secondary cleaning is facilitated;

3. the optical fiber acoustic wave sensing-based wiring device for shallow seismic exploration drives a notch gear to rotate at the groove reclamation stage, the rotating notch gear intermittently drives a second gear connected in a meshed manner to rotate, and the rotating second gear drives two driving wheels coaxial below to rotate and push optical fibers out of the grooves to finish wiring.

Drawings

FIG. 1 is a schematic diagram of a wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing;

FIG. 2 is a schematic diagram of a second view angle structure of a wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing;

FIG. 3 is a schematic diagram of a preprocessing component structure of a wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing;

FIG. 4 is a schematic diagram of a wire track structure of a wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing;

FIG. 5 is a schematic diagram of the structure of the wiring device for shallow seismic exploration in FIG. 1 based on optical fiber acoustic wave sensing;

FIG. 6 is a schematic diagram of the structure of the wiring device for shallow seismic exploration in FIG. 3 based on optical fiber acoustic wave sensing;

FIG. 7 is a schematic diagram of a fixed barrel structure of a wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing;

FIG. 8 is a comparison of geophone and DAS data based on a fiber-optic acoustic sensing shallow seismic survey wiring device according to the present invention.

In the figure: 1. a walking frame; 101. a rectangular structural frame; 102. a vertical rod; 2. a support plate; 3. a first motor; 4. an optical fiber tray; 5. a first guard plate; 6. a first conveyor belt; 7. a fixed barrel; 8. an extension rod; 9. a second guard plate; 10. a second conveyor belt; 11. a guide rake; 12. a cutting frame; 1201. a slide rail seat; 1202. an upper blade; 1203. a slide block; 1204. a lower blade; 1205. a first horizontal bar; 1206. a second spring; 13. a first case; 14. a support wheel; 1401. wedge blocks; 15. a guide rod; 16. a splice plate; 17. a second case; 18. conveying the auger; 19. a first rack; 20. a second rack; 21. a third gear; 22. a first spring; 23. a baffle; 24. a wire rail; 25. a driving wheel; 26. a second gear; 27. a second motor; 28. a notch gear; 29. a second horizontal bar; 30. an elastic rod; 31. a universal wheel; 32. a connecting shaft; 33. a fourth gear; 34. and a third rack.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Example 1:

referring to fig. 1-8, a wiring device for shallow seismic prospecting based on optical fiber acoustic wave sensing, comprising a walking frame 1, referring to fig. 1-2, the walking frame 1 comprises a rectangular structure frame 101 at the upper part, upright rods 102 perpendicular to the ground are fixedly installed at four corners of the rectangular structure frame 101, a second horizontal rod 29 is fixedly installed at one end of the walking frame 1 close to the ground, elastic rods 30 are installed at two ends of the second horizontal rod 29 in a threaded manner, universal wheels 31 are fixedly installed at the lower ends of the elastic rods 30, a supporting plate 2 is fixedly installed on the walking frame 1, the supporting plate 2 is fixedly installed between the upright rods 102, a first motor 3 and an optical fiber disc 4 are assembled on the supporting plate 2, optical fibers are wound on the optical fiber disc 4, and the terminals of the optical fibers are connected with a DAS interrogator for transmission, and the wiring device further comprises: the first guard plates 5 are symmetrically arranged, a first transmission belt 6 is rotatably arranged between the two first guard plates 5, the first transmission belt 6 is connected with the first motor 3 through belt transmission, a fixed barrel 7 is equidistantly arranged on the first transmission belt 6, teeth are equidistantly arranged at the opening end of the fixed barrel 7 and are used for reclaiming a groove, a connecting shaft 32 is fixedly arranged on the first transmission belt 6, the fixed barrel 7 is rotatably arranged on the connecting shaft 32, and a torsion spring is fixedly arranged between the fixed barrel 7 and the connecting shaft 32; a fourth gear 33 is fixedly arranged at one end of the connecting shaft 32, a third rack 34 which can be meshed with the fourth gear 33 is fixedly arranged on the walking frame 1, and when the fixed barrel 7 moves to the third rack 34 to rotate under force, the soil in the fixed barrel 7 is dumped out and is waiting for secondary reclamation; the pretreatment component is fixedly arranged on one side, far away from the first conveying belt 6, of the walking frame 1 and is used for cleaning weeds on the soil surface.

The belt drive is one type of mechanical drive, and in this embodiment consists of a belt that is wrapped around two pulleys. The two pulleys are mounted on the output of the first motor 3 and on the tensioning roller in the first conveyor belt 6, respectively. The belt is in friction with two pulleys to transmit motion and power, in this embodiment the pulley on the output of the first motor 3 is a double grooved pulley.

In this embodiment, the elastic rod 30 includes two parts, one is a sleeve fixedly mounted on the second horizontal rod 29, the other is a sleeve rod slidably mounted in the sleeve, and a third spring is fixedly connected between one end of the sleeve rod in the sleeve and the inner wall of the sleeve, so that vibration caused by uneven roads can be effectively buffered.

In wiring, a road flat area is selected, so that the transportation and burial of the instrument are facilitated. The two sides of the walking frame 1 are manually pushed to advance, the first motor 3 is started, the output end of the first motor 3 drives the first conveying belt 6 to rotate through a belt, a fixed barrel 7 on the first conveying belt 6 is in contact with soil and is reclaimed, a groove with the depth of about 10cm is formed, optical fibers are placed in the groove, the coupling of the optical fibers to the ground can be kept, the influence of surface acoustics is reduced, then the soil is manually filled back and compacted, and wiring is completed.

It should be added that, to verify the reliability of the DAS interrogator data, we have deployed a three-component node seismograph at the same location for comparison, and put 128 0.5Hz three-component node seismographs along the extending direction of the optical fiber as a reference group, where the node seismograph spacing is smaller by 5m in the area where the active fault may pass, and is larger by 10m in other areas, referring to fig. 8, the two-way propagation time of the direct wave, the surface wave and the reflected wave received by the two instruments are very similar, even though the energy and the distribution characteristics are different, and are consistent with the existing research results, which indicates that the DAS interrogator used is reliable, in fig. 8, (a) represents the original DAS data with the sampling rate of 0.125ms, and (b) represents the DAS data after filtration and resampling. (c) (d) and (e) are three-component seismic data recorded by a node seismograph, the node seismograph is densified within the range of 380-730 m, the interval is 5m, the display gain is AGC, and the window is 120ms. (f) The power spectral density for the raw DAS data shown in (a), and the average power spectral density for the processed DAS data in (b) and the three-component seismic data shown in (c) - (e), were normalized.

Referring to fig. 1-3 and 6, the preprocessing assembly includes: the two symmetrically arranged extension rods 8 are rotatably provided with second guard plates 9, a second conveyer belt 10 is rotatably arranged between the two second guard plates 9, and the second conveyer belt 10 is in transmission connection with the first motor 3 through a belt; the guide rake 11 is rotatably arranged between the two second guard plates 9, and the guide rake 11 is connected with the second conveyer belt 10 through a belt transmission; a cutting frame 12 fixedly arranged between the two second guard plates 9, the cutting frame 12 being positioned at the input end of the second conveyor belt 10; the first box 13 is slidably mounted in the travelling frame 1, and the first box 13 is positioned at the output end of the second conveyor belt 10.

Referring to fig. 6, the cutting frame 12 includes: the sliding rail seat 1201 is fixedly arranged between the two second guard plates 9, the upper blade 1202 is fixedly arranged on the sliding rail seat 1201, the two symmetrically arranged sliding blocks 1203 are slidably arranged in the sliding rail seat 1201, and the lower blade 1204 is fixedly arranged between the two sliding blocks 1203; the supporting wheel 14 is rotatably arranged on the outer side of the second guard plate 9, and wedge-shaped blocks 1401 are equidistantly arranged on the inner wall of the supporting wheel 14 along the circumferential direction; a first horizontal rod 1205 is fixedly arranged on one side of the slider 1203, which is close to the inner wall of the sliding rail seat 1201, and one end of the first horizontal rod 1205 penetrates out of the sliding rail seat 1201 and abuts against the wedge-shaped block 1401.

Through the arrangement of the above structure, in order not to make the weeds on the soil interfere with the road judgment when the groove is reclaimed, during the working period of the first motor 3, the second conveyor belt 10 follows the rotation in a belt transmission mode, and transmits the rotating force to the guide rake 11 again through the belt to enable the guide rake 11 to rotate, the weeds in front of the walking frame 1 are laid to one side of the second conveyor belt 10, meanwhile, the rotating supporting wheel 14 continuously pushes the first horizontal rod 1205 through the wedge-shaped block 1401 on the inner wall, so that the first horizontal rod 1205 drives the lower blade 1204 to slide back and forth in the sliding rail seat 1201, and the weed roots are sheared and conveyed into the first box 13.

It should be noted that, the first horizontal rod 1205 is sleeved with the second spring 1206, and two ends of the second spring 1206 are fixedly connected with the slider 1203 and the inner wall of the sliding rail seat 1201 respectively, so as to conveniently drive the first horizontal rod 1205 to reset.

Example 2:

referring to fig. 1-8, substantially the same as embodiment 1, the entire technical solution is further optimized on the basis of embodiment 1,

referring to fig. 1 and 2, embodiments of soil treatment for reclaiming a trench are added, further comprising: guide rods 15 which are slidably arranged at four corners of the support plate 2, wherein the lower ends of the guide rods 15 penetrate through the support plate 2 and are fixedly connected with the first box 13, and the upper ends of the guide rods 15 penetrate through the support plate 2 and are fixedly provided with joint plates 16; the second box 17 is slidably arranged between the guide rods 15, the second box 17 is positioned above the first box 13, and the first box 13 is fixedly provided with a conveying auger 18.

Referring to fig. 1, 2 and 5, a first rack 19 is fixedly installed on the joint plate 16, a second rack 20 is fixedly installed on the first housing 13, the upper end of the second rack 20 penetrates out of the support plate 2, and a third gear 21 is rotatably installed between the first rack 19 and the second rack 20.

Referring to fig. 5, a first spring 22 is sleeved on the guide rod 15, and two ends of the first spring 22 are fixedly connected with the support plate 2 and the connection plate 16 respectively.

Through the arrangement of the structure, weeds are arranged in the first box 13 and then sink along with the action of gravity, meanwhile, the first rack 19 on the connecting plate 16 drives the third gear 21 in meshed connection to rotate, the third gear 21 in rotation drives the second rack 20 in meshed connection to move reversely, the second box 17 ascends and moves to the output end of the first conveying belt 6 to be used for receiving reclaimed soil, two symmetrically arranged crushing rollers are additionally arranged at the opening of the second box 17, stones in the soil can be crushed, the conveying auger 18 is prevented from being blocked, the crushed soil is conveyed to one side of the groove by the conveying auger 18, and workers can backfill conveniently.

Example 3:

referring to fig. 1-8, substantially the same as embodiment 2, the whole technical solution is further optimized on the basis of embodiment 2,

referring to fig. 1, 3 and 4, embodiments of the buried optical fiber are added, further comprising: the baffle plate 23 is fixedly arranged on the walking frame 1, and the baffle plate 23 is positioned above the first conveying belt 6; the baffle plate 23 is fixedly provided with a wire rail 24, two symmetrically arranged driving wheels 25 are rotatably arranged on the wire rail 24, a second gear 26 is coaxially arranged on the driving wheels 25, the baffle plate 23 is fixedly provided with a second motor 27, and the output end of the second motor 27 is fixedly provided with a notch gear 28 which can be meshed and connected with the second gear 26.

Through the arrangement of the structure, in the groove reclamation stage, the output end of the second motor 27 drives the notch gear 28 to rotate, the rotating notch gear 28 intermittently drives the second gear 26 in meshed connection to rotate, and the rotating second gear 26 drives the two driving wheels 25 coaxial below to rotate and push out optical fibers to be placed in the groove, so that wiring is completed.

The wiring method for shallow seismic exploration based on optical fiber acoustic wave sensing comprises the following operation steps:

step 1: placing the walking frame 1 at the movable fault;

step 2: the first motor 3 is started, the second conveyor belt 10 follows to rotate in a belt transmission mode during the working period of the first motor 3, the rotating force is transmitted to the guide rake 11 again through the belt to enable the guide rake 11 to rotate, weeds in front of the walking frame 1 are laid down to one side of the second conveyor belt 10, meanwhile, the rotating supporting wheel 14 continuously pushes the first horizontal rod 1205 through the wedge-shaped block 1401 on the inner wall, and the first horizontal rod 1205 drives the lower blade 1204 to slide back and forth in the sliding rail seat 1201, so that weed roots are sheared and conveyed into the first box 13;

step 3: in the working process of the step 2, the output end of the first motor 3 drives the first conveying belt 6 to rotate through a belt, and after the fixed barrel 7 on the first conveying belt 6 is contacted with soil, the soil is reclaimed to form a groove with the depth of about 10 cm;

step 4: the weeds are arranged in the first box body 13 and then sink under the action of gravity, meanwhile, the first rack 19 on the joint plate 16 drives the third gear 21 in meshed connection to rotate, the third gear 21 in rotation drives the second rack 20 in meshed connection to move reversely, so that the second box body 17 rises and moves to the output end of the first conveying belt 6 for receiving reclaimed soil, two symmetrically arranged crushing rollers are additionally arranged at the opening of the second box body 17, stones in the soil can be crushed, the conveying auger 18 is prevented from being blocked, and the crushed soil is conveyed to one side of the groove by the conveying auger 18, so that workers can conveniently backfill the soil;

step 5: in the groove reclamation stage, the output end of the second motor 27 drives the notch gear 28 to rotate, the rotating notch gear 28 intermittently drives the second gear 26 in meshed connection to rotate, and the rotating second gear 26 drives the two driving wheels 25 coaxial below to rotate and push out optical fibers to be placed in the groove, so that wiring is completed.

The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a wiring arrangement for shallow seismic prospecting based on optic fibre acoustic wave sensing, includes walking frame (1), its characterized in that, fixed mounting has backup pad (2) on walking frame (1), be equipped with first motor (3) and optical fiber dish (4) on backup pad (2), the winding has optic fibre on optical fiber dish (4), still includes:

the device comprises two symmetrically arranged first guard plates (5), wherein a first transmission belt (6) is rotatably arranged between the two first guard plates (5), the first transmission belt (6) is connected with a first motor (3) through belt transmission, and a fixed barrel (7) is equidistantly arranged on the first transmission belt (6);

the pretreatment component is fixedly arranged on one side, far away from the first conveying belt (6), of the walking frame (1) and is used for cleaning weeds on the soil surface.

2. The optical fiber acoustic sensing shallow seismic survey wiring apparatus of claim 1, wherein the preprocessing assembly comprises:

the two extension rods (8) are symmetrically arranged, a second guard plate (9) is rotatably arranged between the two extension rods (8), a second conveying belt (10) is rotatably arranged between the two second guard plates (9), and the second conveying belt (10) is in transmission connection with the first motor (3) through a belt;

the guide rake (11) is rotatably arranged between the two second guard plates (9), and the guide rake (11) is connected with the second conveying belt (10) through a belt transmission;

a cutting frame (12) fixedly arranged between the two second guard plates (9), wherein the cutting frame (12) is positioned at the input end of the second conveying belt (10);

the first box body (13) is slidably arranged in the walking frame (1), and the first box body (13) is positioned at the output end of the second conveying belt (10).

3. The optical fiber acoustic sensing shallow seismic survey wiring apparatus as defined in claim 2, wherein said cutting rack (12) comprises:

the sliding rail seat (1201) is fixedly arranged between the two second guard plates (9), an upper blade (1202) is fixedly arranged on the sliding rail seat (1201), two symmetrically arranged sliding blocks (1203) are slidably arranged in the sliding rail seat (1201), and a lower blade (1204) is fixedly arranged between the two sliding blocks (1203);

the support wheels (14) are rotatably arranged on the outer side of the second guard plate (9), and wedge-shaped blocks (1401) are equidistantly arranged on the inner wall of the support wheels (14) along the circumferential direction;

one side of the sliding block (1203) close to the inner wall of the slide rail seat (1201) is fixedly provided with a first horizontal rod (1205), and one end of the first horizontal rod (1205) penetrates through the slide rail seat (1201) and abuts against the wedge-shaped block (1401).

4. The optical fiber acoustic wave sensing shallow seismic survey wiring apparatus according to claim 1, further comprising:

the guide rods (15) are slidably arranged at four corners of the supporting plate (2), the lower ends of the guide rods (15) penetrate through the supporting plate (2) and are fixedly connected with the first box body (13), and the upper ends of the guide rods (15) penetrate through the supporting plate (2) and are fixedly provided with connecting plates (16);

the second box body (17) is slidably arranged between the guide rods (15), the second box body (17) is located above the first box body (13), and the conveying auger (18) is fixedly arranged on the first box body (13).

5. The optical fiber acoustic wave sensing shallow seismic prospecting wiring device according to claim 4, wherein a first rack (19) is fixedly installed on the connecting plate (16), a second rack (20) is fixedly installed on the first box body (13), the upper end of the second rack (20) penetrates through the supporting plate (2), and a third gear (21) is rotatably installed between the first rack (19) and the second rack (20).

6. The optical fiber acoustic wave sensing shallow seismic prospecting wiring device according to claim 5, wherein the guide rod (15) is sleeved with a first spring (22), and two ends of the first spring (22) are fixedly connected with the supporting plate (2) and the connecting plate (16) respectively.

7. The optical fiber acoustic wave sensing shallow seismic survey wiring apparatus according to claim 1, further comprising:

the baffle plate (23) is fixedly arranged on the walking frame (1), and the baffle plate (23) is positioned above the first conveying belt (6);

the novel motor is characterized in that a wire rail (24) is fixedly arranged on the baffle plate (23), two symmetrically arranged driving wheels (25) are rotatably arranged on the wire rail (24), a second gear (26) is coaxially arranged on the driving wheels (25), a second motor (27) is fixedly arranged on the baffle plate (23), and a notch gear (28) which can be meshed and connected with the second gear (26) is fixedly arranged at the output end of the second motor (27).

8. The wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing according to claim 1 is characterized in that a second horizontal rod (29) is fixedly arranged at one end, close to the ground, of the walking frame (1), elastic rods (30) are arranged at two ends of the second horizontal rod (29) in a threaded mode, and universal wheels (31) are fixedly arranged at the lower ends of the elastic rods (30).

9. The optical fiber acoustic wave sensing shallow seismic prospecting wiring device according to claim 1, wherein a connecting shaft (32) is fixedly arranged on the first transmission belt (6), the fixed barrel (7) is rotatably arranged on the connecting shaft (32), and a torsion spring is fixedly arranged between the fixed barrel (7) and the connecting shaft (32);

one end of the connecting shaft (32) is fixedly provided with a fourth gear (33), and the walking frame (1) is fixedly provided with a third rack (34) which can be meshed and connected with the fourth gear (33).

10. A wiring method for shallow seismic exploration based on optical fiber acoustic wave sensing, which adopts the wiring device for shallow seismic exploration based on optical fiber acoustic wave sensing as claimed in any one of claims 1-9, and is characterized by comprising the following operation steps:

step 1: placing the device at an active fault;

step 2: a groove with the depth of about 10cm is reclaimed at the movable fault, and an optical fiber is placed in the groove;

step 3: the earth is manually filled back into the trench and compacted.