Surveying and mapping equipment for geological surveying and mapping

Abstract

The invention relates to the technical field of geological surveying, in particular to surveying and mapping equipment for geological surveying and mapping, which comprises a first box body, a second box body and an inhaul cable, the first box body and the second box body can be fixedly arranged on the ground on two sides of a crack respectively, a winding wheel is arranged in the first box body, one end of the inhaul cable is fastened on the winding wheel, and the other end of the inhaul cable is fastened on the second box body. A plurality of spring rods are fixed in the second box body, a connecting plate is fixed to one ends of the spring rods, the other end of the inhaul cable is fastened to the connecting plate, the winding wheel is coaxially connected with a fluted disc, tooth columns are rotationally arranged on the two sides in the first box body, and the upper ends of the tooth columns penetrate through the top wall of the first box body and are connected with first pointers. Angle scale marks are arranged on the two sides of the upper portion of the first box body, the first pointers are aligned with the corresponding angle scale marks respectively, a connecting pipeline is fixed to the position, located at the first opening, of one side of the first box body, and an auxiliary monitoring mechanism is arranged on the connecting pipeline. According to the invention, dual surveying and mapping are realized, trace changes can be monitored, the accuracy is improved, and the relative offset can be monitored.

Description

Technical Field

[0001] The present invention relates to the technical field of geological surveying, and particularly to a surveying device for geological surveying and mapping. Background Art

[0002] Geological surveying and mapping is the general term for all surveying and mapping work involved in geological investigation, mineral exploration, and the compilation of their resulting maps. There are many equipment and devices used in geological surveying and mapping, including devices for measuring geological fractures. Human production and mining activities often cause the damage and instability of rock and soil masses, resulting in the occurrence of surface fractures. The locations where fractures appear are exactly the areas of stress concentration or relatively low strength in the rock and soil masses, which may also be the precursors of geological disasters such as ground subsidence and collapse. Therefore, when fractures appear, surveying equipment must be used to conduct long-term surveys on them.

[0003] Currently, there are automated crack detectors for crack surveying and mapping. However, the changes in cracks may be long-term, and the monitoring time can even be up to several years. The detectors are used in the wild environment for a long time, and the failure rate is high. Traditional non-instrument means mainly use cables. The two ends of the cable are set on both sides of the crack. The movement of the cable caused by the change of the crack is used for observation. However, the annual change distance of the crack is very small, and it is difficult for this traditional means to monitor the micro-changes. At the same time, most of the existing means can only monitor the change in the size of the gap and are not convenient for surveying the relative offset on both sides of the crack. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a surveying device for geological surveying and mapping to solve the problems that it is inconvenient to monitor micro-changes and difficult to monitor the relative offset of the two side plates in the existing geological crack surveying and mapping.

[0005] Based on the above purpose, the present invention provides a surveying device for geological surveying and mapping

[0006] A surveying and mapping device for geological surveying and mapping, comprising a first box body, a second box body, and a cable. The first box body and the second box body can be respectively fixed on the ground on both sides of the crack. One side of the first box body and the second box body are respectively provided with a first opening and a second opening. Both ends of the cable extend into the first box body and the second box body through the first opening and the second opening respectively. A winding wheel is arranged in the first box body, and one end of the cable is fastened to the winding wheel. A plurality of spring rods are fixed in the second box body, and a connecting plate is fixed at one end of the plurality of spring rods. The other end of the cable is fastened to the connecting plate. The winding wheel is coaxially connected with a gear disc. Tooth columns are rotatably arranged on both sides inside the first box body, and the tooth columns are all meshed with the gear disc. The upper ends of the tooth columns pass through the top wall of the first box body and are connected with a first pointer. Angular scale lines are opened on both sides of the upper part of the first box body, and the first pointers are respectively aligned with the corresponding angular scale lines. An auxiliary monitoring mechanism is fixed at the first opening on one side of the first box body. The auxiliary monitoring mechanism can cooperate with the first pointer for precise monitoring. Two first guide rollers are movably arranged in the second opening.

[0007] Further, a rotating shaft is rotatably arranged on the bottom wall inside the first box body, and a fixing ring is fixed on the bottom wall inside the first box body. The fixing ring and the rotating shaft are coaxially arranged. The winding wheel and the gear disc are both fixedly sleeved on the rotating shaft, and a torsion spring is installed between the rotating shaft and the fixing ring.

[0008] Further, an inner cavity is opened in the upper part of the tooth column, a limiting disc is movably arranged in the inner cavity, a movable cover is rotatably arranged on the upper part of the tooth column, one end of the movable cover extends into the inner cavity and is fixedly connected with the limiting disc, a plurality of first pointers are fixed on the corresponding movable covers, and a plurality of fastening screws are threadedly connected through the movable covers.

[0009] Further, the auxiliary monitoring mechanism includes a cylinder fixed on the connecting pipe. The cylinder is filled with an observation liquid. The cylinder has a hollow interlayer, and a piston and a piston rod are arranged in the cylinder. One end of the piston rod extends into the connecting pipe. A graduated needle tube is fixed on the upper part of the cylinder, and the graduated needle tube is communicated with the cylinder. A rotating rod is rotatably arranged on the top wall inside the connecting pipe. One end of the piston rod is in tight contact with one side of the rotating rod. A push block is slidably arranged at one end of the connecting pipe. A pulley is installed at one end of the push block. The pulley is in tight contact with one side of the rotating rod. A through hole is opened through the push block. Two second guide rollers are rotatably arranged in the first opening. The cable sequentially passes through the through hole, the connecting pipe, and the two second guide rollers. A fastener is arranged on the push block.

[0010] Further, the fastener includes a pressing block and a fastening screw. The pressing block is arranged at one end inside the through hole, the fastening screw is threadedly connected to the push block, and one end of the fastening screw is rotatably connected to the pressing block.

[0011] Further, a limiting groove is opened at one end of the bottom wall inside the connecting pipe, and a limiting block is fixed at the bottom of the push block. The limiting block is slidably arranged in the limiting groove.

[0012] Furthermore, sliding grooves are formed in the inner walls on both sides of the second opening, and sliding rods are slidably arranged in the sliding grooves. One ends of the sliding rods are respectively provided with return springs, and the other ends of the sliding rods are fixedly provided with mounting frames. The two first guide rollers are respectively mounted on the corresponding mounting frames. Second pointers are fixedly arranged on one side of each sliding rod. Strip-shaped grooves are formed on both sides of the second opening on one side of the second box body. The two strip-shaped grooves are respectively communicated with the two sliding grooves. The two second pointers respectively pass through the two strip-shaped grooves. Straight scale lines are arranged at the positions of the strip-shaped grooves on one side of the second box body. The two second pointers respectively align with the two straight scale lines.

[0013] Furthermore, a hook is fixedly arranged on one side of the connecting plate. A hanging ring is fixedly arranged at one end of the cable. The hanging ring is hung on the hook. A cross bar is fixedly arranged on the inner wall of one side of the second box body, and a pressure switch is fixedly arranged at the other end of the cross bar. The connecting plate abuts against the pressure switch.

[0014] Furthermore, it further includes two precast piles, which can be respectively pre-buried in the soil on both sides of the crack in advance, and the first box body and the second box body are respectively fixed on the upper parts of the two precast piles.

[0015] Advantages of the present invention:

[0016] 1. In the present invention, through the arranged winding wheel, gear disc, gear column, first pointer and angular scale line, and in cooperation with the auxiliary monitoring mechanism, when in use, the first box body and the second box body are fixed on both sides of the crack through the two precast piles, and then the two ends of the cable are respectively connected to the winding wheel and the hook. When the crack changes, the cable is unwound at one end of the winding wheel. When the winding wheel rotates, it drives the two gear columns to rotate through the transmission of the gear disc. Then, the specific angle can be observed through the upper angular scale line, and the distance change of the crack can be obtained by converting it into distance. When the cable moves, it drives the push block to move. The pulley at one end of the push block presses the rotating rod to rotate, and the rotating rod jacks up the piston rod. The piston moves upward to squeeze the liquid level of the observation liquid to move upward into the scale needle tube, so as to obtain the distance change of the crack. In cooperation with the upper angular scale line, double mapping is realized, and micro changes can be monitored to improve the accuracy.

[0017] 2. In the present invention, through the two first guide rollers movably arranged in the second opening, and in cooperation with the straight scale lines of the second pointers, when the plates on both sides of the crack show relative displacement, the cable squeezes one of the first guide rollers to move, so that the sliding rod drives one of the second pointers to move. We can observe the displacement distance through the straight scale line to obtain the relative displacement amount, increase the mapping data, and improve the monitoring effect. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the attached drawings required for the description of the embodiments or the prior art. Obviously, the attached drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other attached drawings can also be obtained based on these attached drawings.

[0019] Figure 1 Isometric schematic diagram of an embodiment of the present invention;

[0020] Figure 2 First box body isometric sectional view of an embodiment of the present invention;

[0021] Figure 3 Connection pipe plane sectional view of an embodiment of the present invention;

[0022] Figure 4 Tooth column isometric sectional view of an embodiment of the present invention;

[0023] Figure 5 Gear and winding wheel isometric schematic diagram of an embodiment of the present invention;

[0024] Figure 6 Second box body isometric sectional view of an embodiment of the present invention;

[0025] Figure 7 Second guide roller isometric schematic diagram of an embodiment of the present invention.

[0026] The labels in the figure are:

[0027] 1. First box body; 2. Second box body; 3. Cable; 4. Prefabricated pile; 5. Connection pipe; 6. Cylinder block; 7. Angular scale line; 8. Tooth column; 9. Scale needle tube; 10. Push block; 11. Through hole; 12. Winding wheel; 13. Tooth disc; 14. First pointer; 15. Movable cover; 16. Spring rod; 17. Connecting plate; 18. Pressure switch; 19. Cross bar; 20. Straight scale line; 21. Strip groove; 22. First guide roller; 23. Hook; 24. Fixed ring; 25. Torsion spring; 26. Rotating shaft; 27. Piston; 28. Second guide roller; 29. Fastening screw; 30. Piston rod; 31. Rotating rod; 32. Limit groove; 33. Limit block; 34. Pressure block; 35. Limit disc; 36. Tightening screw; 37. Mounting bracket; 38. Slide bar; 39. Second pointer; 40. Return spring. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the following further elaborates on the present invention in combination with specific embodiments.

[0029] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the present invention should have the ordinary meanings understood by those with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0030] As Figures 1-7 shown, a surveying and mapping device for geological surveying and mapping includes a first box body 1, a second box body 2, and a cable 3. The first box body 1 and the second box body 2 can be respectively fixedly arranged on the ground on both sides of the crack. A first opening and a second opening are respectively formed on one side of the first box body 1 and the second box body 2. Both ends of the cable 3 extend into the first box body 1 and the second box body 2 through the first opening and the second opening respectively. A winding wheel 12 is arranged in the first box body 1, and one end of the cable 3 is fastened to the winding wheel 12. A plurality of spring rods 16 are fixed in the second box body 2. A connecting plate 17 is fixed to one end of the plurality of spring rods 16. The other end of the cable 3 is fastened to the connecting plate 17. The winding wheel 12 is coaxially connected with a gear disk 13. Tooth columns 8 are rotatably arranged on both sides in the first box body 1. The tooth columns 8 are all meshed with the gear disk 13. The upper ends of the tooth columns 8 pass through the top wall of the first box body 1 and are connected with first pointers 14. Angular scale lines 7 are formed on both sides of the upper part of the first box body 1. The first pointers 14 respectively align with the corresponding angular scale lines 7. A connecting pipe 5 is fixed on one side of the first box body 1 at the first opening. An auxiliary monitoring mechanism is arranged on the connecting pipe 5. The auxiliary monitoring mechanism can cooperate with the first pointer 14 for precise monitoring. Two first guide rollers 22 are movably arranged in the second opening. When the crack changes, the end of the cable 3 close to the winding wheel 12 unwinds, so that when the winding wheel 12 rotates, it drives the two tooth columns 8 to rotate through the transmission of the gear disk 13. Furthermore, the specific angle can be observed through the first pointers 14 and the angular scale lines 7 on the upper part, and the crack change distance can be obtained by converting it into a distance, realizing the monitoring of micro-changes and improving the accuracy.

[0031] A rotating shaft 26 is rotatably arranged on the inner bottom wall of the first box body 1, and a fixing ring 24 is fixed on the inner bottom wall of the first box body 1. The fixing ring 24 and the rotating shaft 26 are coaxially arranged. The winding wheel 12 and the gear disk 13 are both fixedly sleeved on the rotating shaft 26. A torsion spring 25 is installed between the rotating shaft 26 and the fixing ring 24. The torsion spring 25 acts on the winding wheel 12 through the rotating shaft 26 to make the cable 3 in a taut state.

[0032] There is a cavity in the upper part of the tooth column 8. A limiting disk 35 is movably arranged in the cavity. An activity cover 15 is rotatably arranged on the upper part of the tooth column 8. One end of the activity cover 15 extends into the cavity and is fixedly connected with the limiting disk 35. A plurality of first pointers 14 are fixed on the corresponding activity cover 15. A plurality of fastening screws 36 are threadedly connected through the activity cover 15. By loosening the fastening screws 36, the activity cover 15 can be rotated to zero the first pointer 14 on the angular scale line 7.

[0033] The auxiliary monitoring mechanism includes a cylinder body 6 fixed on the connecting pipe 5. The cylinder body 6 is filled with an observation liquid. The cylinder body 6 has a hollow interlayer, and a piston 27 and a piston rod 30 are arranged in the cylinder body 6. One end of the piston rod 30 extends into the connecting pipe 5. A graduated needle tube 9 is fixed on the upper part of the cylinder body 6. The graduated needle tube 9 is communicated with the cylinder body 6. A rotating rod 31 is rotatably arranged on the inner top wall of the connecting pipe 5. One end of the piston rod 30 is in tight contact with one side of the rotating rod 31. A push block 10 is slidably arranged at one end of the connecting pipe 5. A pulley is installed at one end of the push block 10. The pulley is in tight contact with one side of the rotating rod 31. A through hole 11 is formed through the push block 10. Two second guide rollers 28 are rotatably arranged in the first opening. The cable 3 sequentially passes through the through hole 11, the connecting pipe 5 and the two second guide rollers 28. A fastener is arranged on the push block 10. When the cable 3 moves, it drives the push block 10 to move. The pulley at one end of the push block 10 presses the rotating rod 31 to rotate. The rotating rod 31 jacks up the piston rod 30, and the piston 27 lifts up to squeeze the liquid level of the observation liquid to rise into the graduated needle tube 9 to obtain the crack change distance.

[0034] The fastener includes a pressing block 34 and a fastening screw 29. The pressing block 34 is arranged at one end in the through hole 11. The fastening screw 29 is threadedly connected to the push block 10, and one end of the fastening screw 29 is rotatably connected to the pressing block 34. In the early stage when installing and connecting the cable 3, the fastening screw 29 can be loosened to prevent the push block 10 from moving synchronously when the cable 3 moves. After the cable is installed, the push block 10 and the cable 3 are relatively fixed through the fastening screw 29.

[0035] A limiting groove 32 is formed at one end of the inner bottom wall of the connecting pipe 5. A limiting block 33 is fixed at the bottom of the push block 10. The limiting block 33 is slidably arranged in the limiting groove 32.

[0036] Chute grooves are formed on the inner walls on both sides of the second opening, and slide bars 38 are slidably arranged in the chute grooves. Return springs 40 are arranged at one ends of the slide bars 38, and mounting brackets 37 are fixed at the other ends of the slide bars 38. Two first guide rollers 22 are respectively mounted on the corresponding mounting brackets 37. Second pointers 39 are fixed on one sides of the slide bars 38. Strip-shaped grooves 21 are formed on both sides of the second opening on one side of the second box body 2. The two strip-shaped grooves 21 are respectively communicated with the two chute grooves. The two second pointers 39 respectively pass through the two strip-shaped grooves 21. Straight scale lines 20 are arranged at the positions of the strip-shaped grooves 21 on one side of the second box body 2. The two second pointers 39 respectively align with the two straight scale lines 20. When the plates on both sides of the crack are relatively displaced, the cable 3 presses one of the first guide rollers 22 to move, so that the slide bar 38 drives one of the second pointers 39 to move, and we can observe the displacement distance through the straight scale line 20.

[0037] A hook 23 is fixed on one side of the connecting plate 17. A hanging ring is fixed at one end of the cable 3, and the hanging ring is hung on the hook 23. A cross bar 19 is fixed on the inner wall on one side of the second box body 2, and a pressure switch 18 is fixed at the other end of the cross bar 19. The connecting plate 17 abuts against the pressure switch 18.

[0038] It further includes two precast piles 4. The two precast piles 4 can be respectively pre-buried in the soil on both sides of the crack, and the first box body 1 and the second box body 2 are respectively fixed on the upper parts of the two precast piles 4.

[0039] Working principle: When in use, first fix two precast piles 4 on both sides of the geological crack by pre-embedding them in the concrete. Then fix the first box body 1 and the second box body 2 on both sides of the crack through the two precast piles 4. Connect both ends of the cable 3 to the winding wheel 12 and the hook 23 respectively. Under the action of the coil spring 25, the winding wheel 12 tightens the cable 3. After the cable 3 is straightened and tightened, move the push block 10 to the initial position so that the pulley at one end thereof contacts the bottom of the rotating rod 31. Fine-tune until the observation liquid returns to zero on the graduated needle tube 9. At this time, tighten the fastening screw 29 so that the pressing block 34 presses the cable 3. Then rotate the movable cover 15 to make the first pointer 14 return to zero on the angular scale line 7. Then relatively fix the movable cover (15) and the tooth column 8 by tightening the abutting screw 36 in cooperation with the limit disk 35. When the crack changes, the end of the cable 3 close to the winding wheel 12 unwinds, so that when the winding wheel 12 rotates, it drives the two tooth columns 8 to rotate through the transmission of the tooth disk 13. Furthermore, the specific angle can be observed through the upper first pointer 14 and the angular scale line 7, and the crack change distance can be obtained by converting it into a distance. When the cable 3 moves, it drives the push block 10 to move. The pulley at one end of the push block 10 squeezes the rotating rod 31 to rotate, and the rotating rod 31 jacks up the piston rod 30, and the piston 27 lifts to squeeze the liquid level of the observation liquid to rise into the graduated needle tube 9, and the crack change distance can also be obtained. Double surveying and mapping are carried out to monitor minute changes. When the plates on both sides of the crack show relative displacement, the cable 3 squeezes one of the first guide rollers 22 to move, so that the sliding rod 38 drives one of the second pointers 39 to move. We can observe the displacement distance through the straight scale line 20 to obtain the relative displacement amount.

[0040] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A surveying and mapping device for geological surveying and mapping, comprising a first box body (1), a second box body (2), and a cable (3), characterized in that, The first box body (1) and the second box body (2) can be fixedly arranged on the ground on both sides of the crack respectively. One side of the first box body (1) and the second box body (2) is respectively provided with a first opening and a second opening. Both ends of the cable (3) extend into the first box body (1) and the second box body (2) through the first opening and the second opening respectively. A winding wheel (12) is arranged in the first box body (1), and one end of the cable (3) is fastened to the winding wheel (12). A plurality of spring rods (16) are fixed in the second box body (2), and a connecting plate (17) is fixed at one end of the plurality of spring rods (16). The other end of the cable (3) is fastened to the connecting plate (17). The winding wheel (12) is coaxially connected with a gear disk (13). Tooth columns (8) are rotatably arranged on both sides inside the first box body (1), and the tooth columns (8) are all meshed with the gear disk (13). The upper ends of the tooth columns (8) pass through the top wall of the first box body (1) and are connected with first pointers (14). Angular scale lines (7) are respectively opened on both sides of the upper part of the first box body (1), and the first pointers (14) are respectively aligned with the corresponding angular scale lines (7). A connecting pipe (5) is fixed on one side of the first box body (1) at the first opening, and an auxiliary monitoring mechanism is arranged on the connecting pipe (5). The auxiliary monitoring mechanism can cooperate with the first pointer (14) for accurate monitoring. Two first guide rollers (22) are movably arranged in the second opening.

2. The surveying and mapping equipment for geological surveying and mapping according to claim 1, characterized in that, A rotating shaft (26) is rotatably arranged on the inner bottom wall of the first box body (1), and a fixed ring (24) is fixed on the inner bottom wall of the first box body (1). The fixed ring (24) and the rotating shaft (26) are coaxially arranged. The winding wheel (12) and the gear disk (13) are both fixedly sleeved on the rotating shaft (26). A torsion spring (25) is installed between the rotating shaft (26) and the fixed ring (24).

3. A surveying device for geological surveying according to claim 1, characterized in that, An upper part inside the tooth column (8) is provided with a cavity, and a limiting disk (35) is movably arranged in the cavity. An activity cover (15) is rotatably arranged on the upper part of the tooth column (8). One end of the activity cover (15) extends into the cavity and is fixedly connected with the limiting disk (35). A plurality of first pointers (14) are fixed on the corresponding activity covers (15). A plurality of fastening screws (36) are threadedly connected through the activity cover (15).

4. A surveying device for geological surveying according to claim 1, characterized in that, The auxiliary monitoring mechanism includes a cylinder block (6) fixed on a connecting pipe (5). The cylinder block (6) is filled with an observation liquid. The cylinder block (6) has a hollow interlayer, and a piston (27) and a piston rod (30) are arranged in the cylinder block (6). One end of the piston rod (30) extends into the connecting pipe (5). A graduated syringe (9) is fixed on the upper part of the cylinder block (6), and the graduated syringe (9) is communicated with the cylinder block (6). A rotating rod (31) is rotatably arranged on the inner top wall of the connecting pipe (5). One end of the piston rod (30) is in tight contact with one side of the rotating rod (31). A push block (10) is slidably arranged at one end of the connecting pipe (5). A pulley is installed at one end of the push block (10), and the pulley is in tight contact with one side of the rotating rod (31). A through hole (11) is formed through the push block (10). Two second guide rollers (28) are rotatably arranged in the first opening. The cable (3) sequentially passes through the through hole (11), the connecting pipe (5), and the two second guide rollers (28). A fastener is arranged on the push block (10).

5. A surveying device for geological surveying according to claim 4, characterized in that, The fastener includes a pressing block (34) and a fastening screw (29). The pressing block (34) is arranged at one end in the through hole (11). The fastening screw (29) is threadedly connected to the push block (10), and one end of the fastening screw (29) is rotatably connected to the pressing block (34).

6. The surveying and mapping equipment for geological surveying and mapping according to claim 5, characterized in that, A limiting groove (32) is formed at one end of the inner bottom wall of the connecting pipe (5). A limiting block (33) is fixed at the bottom of the push block (10), and the limiting block (33) is slidably arranged in the limiting groove (32).

7. A surveying and mapping device for geological surveying according to claim 1, characterized in that, Chute grooves are formed on the inner walls of both sides of the second opening, and sliding rods (38) are slidably arranged in the chute grooves. A return spring (40) is arranged at one end of each sliding rod (38). Mounting brackets (37) are fixed at the other ends of the sliding rods (38), and the two first guide rollers (22) are respectively installed on the corresponding mounting brackets (37). Second pointers (39) are fixed on one side of each sliding rod (38). Strip-shaped grooves (21) are formed on both sides of the second opening on one side of the second box body (2), and the two strip-shaped grooves (21) are respectively communicated with the two chute grooves. The two second pointers (39) respectively pass through the two strip-shaped grooves (21). Straight scale lines (20) are arranged at the positions of the strip-shaped grooves (21) on one side of the second box body (2), and the two second pointers (39) respectively align with the two straight scale lines (20).

8. A surveying device for geological surveying according to claim 1, characterized in that, A hook (23) is fixed on one side of the connecting plate (17). A hanging ring is fixed at one end of the cable (3), and the hanging ring is hung on the hook (23). A cross bar (19) is fixed on the inner wall of one side of the second box body (2), and a pressure switch (18) is fixed at the other end of the cross bar (19). The connecting plate (17) is in tight contact with the pressure switch (18).

9. A surveying device for geological surveying according to any one of claims 1-8, characterized in that, It further includes two precast piles (4). The two precast piles (4) can be respectively pre-buried in the soil on both sides of the crack, and the first box body (1) and the second box body (2) are respectively fixed on the upper parts of the two precast piles (4).

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