Underground cave wellbore anti-sloughing support equipment based on geological exploration engineering

Abstract

The application discloses a kind of underground cave wellbore anti-sloughing support equipment based on geological exploration engineering, including cross-shaped rod, the both sides symmetrical positions of cross-shaped rod are all fixedly connected with cylindrical rod, and the end of cylindrical rod away from cross-shaped rod is fixedly connected with circular plate, the outer contour of cylindrical rod is movably connected with cross-shaped slider, the four ends corresponding positions on cross-shaped slider are all fixedly connected with first connecting seat, the first connecting seat is all rotatably connected with first adjusting rod by pin shaft, the outer contour of circular plate is all fixedly connected with second connecting seat with first connecting seat corresponding position, the second connecting seat is all rotatably connected with second adjusting rod by pin shaft, the end of second adjusting rod and first adjusting rod away from cross-shaped slider and circular plate is rotatably connected with third connecting seat by pin shaft, the present application has the inner wall of wellbore is closely supported, further improve the stability of wellbore.

Description

Technical Field

[0001] This invention relates to the field of underground cave wellbore anti-collapse support technology, specifically an underground cave wellbore anti-collapse support device based on geological exploration engineering. Background Technology

[0002] Coal is one of my country's most important energy and chemical raw materials. Its mining methods and technology directly affect the utilization efficiency of coal resources, safe production and ecological environment. Coal mining projects require drilling on the surface or underground. During the mining process, the stress state of the rock strata will be changed, causing stress concentration and redistribution, which will reduce the stability of the rock strata and cause collapse.

[0003] Referring to Chinese patent (patent number: CN202111542403.5, patent name: a layered hole-forming support sieve tube), it includes a hollow double-layer seamless steel tube frame and a support mechanism fitted on it. A ball bearing is set between the two layers of steel tubes. The hollow tube frame has a small mass, which is convenient for transportation. The ball bearing between the two layers of steel tubes prevents the tube frame from twisting and breaking due to the rotation of the support frame with the tube frame, and makes it easy for the equipment to enter the hole together with the external equipment.

[0004] The aforementioned device, when supporting the inner wall of the cave through the support plate, is difficult to make close contact with the inner wall of the well, which makes it easy for the mud and sand on the inner wall of the well to be lost, resulting in the risk of the well collapsing and poor performance.

[0005] Therefore, we propose an anti-collapse support device for underground cave wellbores based on geological exploration engineering. Summary of the Invention

[0006] The purpose of this invention is to provide an underground cave wellbore anti-collapse support device based on geological exploration engineering, which has the advantage of providing tight support for caves and solves the problems in the background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a support device for preventing collapse of underground cave wellbores based on geological exploration engineering, comprising a cross-shaped rod, on which columnar rods are fixedly connected at symmetrical positions on both sides, and a circular plate is fixedly connected to the end of the columnar rod away from the cross-shaped rod. A cross-shaped slider is movably connected to the outer contour of the columnar rod, and a first connecting seat is fixedly connected to each of the four corresponding positions on the cross-shaped slider. A first adjusting rod is rotatably connected to each of the first connecting seats via a pin. A second connecting seat is fixedly connected to the outer contour of the circular plate at a corresponding position on the first connecting seat. A second adjusting rod is rotatably connected to each of the second connecting seats via a pin. A third connecting seat is rotatably connected to the end of the second adjusting rod and the first adjusting rod away from the cross-shaped slider and the circular plate via a pin. An arc-shaped support plate for supporting the inner wall of the wellbore is fixedly connected to each of the four arc-shaped support plates. An airbag that is in close contact with the inner wall of the wellbore is fixedly connected to each of the four arc-shaped support plates. A support mechanism for unfolding and retracting the arc-shaped support plates is provided on the cross-shaped rod.

[0008] Preferably, the support mechanism includes a threaded tube passing through and rotatably connected to a cross-shaped rod, a threaded sleeve passing through and rotatably connected to a cross-shaped slider, and the end of the threaded tube away from the cross-shaped rod passing through the inner wall of the threaded sleeve and being screwed on. A ring gear is fixedly connected to the outer contour of the threaded tube near the end of the cross-shaped rod. A transmission gear driven by a power mechanism is passing through and rotatably connected to the side of the cross-shaped rod near the ring gear via a pin, and the transmission gear meshes with the ring gear for transmission. The power mechanism is a motor after being energized.

[0009] Preferably, one end of the cross-shaped slider has a limiting groove, and the inner wall of the limiting groove is movably connected to a locking block for locking the threaded sleeve. The threaded sleeve has a locking groove that matches the outer contour of the locking block, and a spring for supporting the locking block is fixedly connected to the opposite surface of the locking block and the limiting groove.

[0010] Preferably, rectangular through slots are provided at corresponding positions on the four ends of the cross-shaped rod. A cylindrical shell is fixedly connected to the inner wall of the rectangular through slot at the end away from the ring gear. A connecting pipe is fixedly connected to the inner wall of the cylindrical shell on the side near the airbag. The connecting pipe is fixedly connected to the inner wall of the airbag at the end away from the cylindrical shell. An auxiliary mechanism for inflating and deflating the airbag is provided on the cylindrical shell.

[0011] Preferably, the auxiliary mechanism includes piston plates movably connected to the inner walls of the cylindrical shell, L-shaped rods fixedly connected to the ends of the piston plates away from the connecting pipes, and support blocks fixedly connected to the inner walls of the arc-shaped support plates near the top, with the ends of the L-shaped rods away from the piston plates passing through the support blocks and movably connected.

[0012] Preferably, a ring is rotatably connected through the circular plate, and a fixed pipe is fixedly connected to the inner wall of the ring. The outer contour of the fixed pipe away from the ring is provided with spiral blades to assist in the discharge of mud from the wellbore.

[0013] Preferably, the end of the ring near the threaded tube is provided with a plurality of slots evenly distributed, and the end of the threaded sleeve near the circular plate is fixedly connected with a plurality of blocks corresponding to the positions of the slots.

[0014] Preferably, the cross-shaped slider is provided with an unlocking mechanism for unlocking the locking block from the threaded sleeve. The unlocking mechanism includes a moving rod that passes through and is movably connected to the side of the cross-shaped slider near the locking block. The moving rod has an inclined through groove. A connecting block is fixedly connected to the side of the locking block near the moving rod, and the end of the connecting block away from the locking block passes through to the inner wall of the inclined through groove and is movably connected.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the cross-shaped slider moves vertically towards the circular plate, the first adjusting rod on the first connecting seat rotates horizontally towards the second connecting seat under the action of the cross-shaped slider. The second adjusting rod on the second connecting seat rotates horizontally under the action of the arc-shaped support plate, causing the arc-shaped support plate to move away from the cross-shaped slider under the action of the second adjusting rod. Simultaneously, the arc-shaped support plate and the airbag can move and unfold towards the wellbore under the action of the first and second adjusting rods. As the cross-shaped slider moves to the limit distance at one end of the circular plate, the arc-shaped support plate drives the airbag to contact and support the inner wall of the wellbore.

[0016] Second, the support block set on the arc-shaped support plate, with the L-shaped rod passing through and movably connected to it, allows the support block to push the L-shaped rod towards the cylindrical shell as the arc-shaped support plate unfolds. The piston plate on the L-shaped rod moves towards the end near the connecting pipe under the action of the L-shaped rod. Simultaneously, the internal air pressure of the cylindrical shell near the connecting pipe is negative, and the connecting pipe connects the cylindrical shell and the airbag. The connecting pipe allows the gas inside the cylindrical shell to fill the airbag, enabling the airbag to expand and make close contact with the inner wall of the wellbore. Since the inner wall of the wellbore is uneven after drilling and has gaps, this design avoids the problem of the support plate failing to make close contact with the inner wall of the wellbore, preventing the loss of sediment from the inner wall and causing wellbore collapse. This further improves the stability of the wellbore support.

[0017] 3. As the cross-shaped slider moves to its limit distance at one end of the circular plate, the threaded sleeve drives the locking block to move to the inner wall of the slot for engagement. Simultaneously, one end of the moving rod contacts the circular plate, and the other end of the moving rod moves vertically towards the cross-shaped rod under the resistance of the circular plate. Through the inclined through groove on the moving rod and the connecting block on the locking block, the connecting block penetrates to the inner wall of the inclined through groove and is limited. As the moving rod moves vertically towards the cross-shaped rod, the connecting block pulls the locking block away from the threaded sleeve under the action of the inclined through groove. The spring is compressed and contracted under the action of the locking block. At this time, the locking block and the locking groove are unlocked, and the threaded sleeve can rotate synchronously with the threaded tube. At the same time, the ring rotates synchronously with the threaded sleeve under the action of the locking block. This causes the fixed tube to drive the spiral blade to rotate synchronously under the action of the ring, so that the spiral blade can assist in discharging the mud generated during drilling out of the wellbore.

[0018] The use of the above structures solves the problem that existing devices, when supporting the cave walls with support plates, are difficult to make close contact with the cave walls, which makes it easy for mud and sand on the cave walls to be lost, leading to the risk of cave collapse. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional view of the present invention; Figure 3 This is a three-dimensional structural diagram of the part where the cylindrical rod of the present invention is located; Figure 4 For the present invention Figure 2 Schematic diagram of the structure at point A in the middle; Figure 5 For the present invention Figure 3 Schematic diagram of the structure at point B; Figure 6 For the present invention Figure 3 Schematic diagram of the structure at point C; Figure 7 This is a cross-sectional schematic diagram of the three-dimensional structure of the cylindrical shell of the present invention; Figure 8 This is a cross-sectional schematic diagram of the three-dimensional structure of the cross-shaped slider of the present invention.

[0020] In the diagram: 1. Cross-shaped rod; 101. Rectangular through slot; 2. Columnar rod; 3. Circular plate; 4. Cross-shaped slider; 401. Limiting slot; 5. First connecting seat; 6. First adjusting rod; 7. Second connecting seat; 8. Second adjusting rod; 9. Third connecting seat; 10. Arc-shaped support plate; 11. Airbag; 12. Threaded sleeve; 121. Locking slot; 13. Locking block; 14. Spring; 15. Threaded tube; 16. Ring gear; 17. Transmission gear; 18. Columnar housing; 19. Connecting tube; 20. Piston plate; 21. L-shaped rod; 22. Support block; 23. Ring; 231. Slot; 24. Fixing tube; 25. Helical blade; 26. Locking block; 27. Moving rod; 271. Angled through slot; 28. Connecting block. Detailed Implementation

[0021] The technical solutions of the embodiments 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, and 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.

[0022] Example 1:

[0023] Please see Figures 1 to 8 This invention provides a technical solution: an underground cave wellbore anti-collapse support device based on geological exploration engineering, comprising a cross-shaped rod 1, on which columnar rods 2 are fixedly connected at symmetrical positions on both sides, and a circular plate 3 is fixedly connected to one end of the columnar rod 2 away from the cross-shaped rod 1. A cross-shaped slider 4 is movably connected to the outer contour of the columnar rod 2, and a first connecting seat 5 is fixedly connected to each of the four corresponding positions on the cross-shaped slider 4. A first adjusting rod 6 is rotatably connected to each of the first connecting seats 5 via a pin. The outer contour of the circular plate 3 is connected to the first connecting seat 5. Each of the corresponding positions is fixedly connected to a second connecting seat 7. Each of the second connecting seats 7 is rotatably connected to a second adjusting rod 8 via a pin. The ends of the second adjusting rod 8 and the first adjusting rod 6 away from the cross-shaped slider 4 and the circular plate 3 are rotatably connected to a third connecting seat 9 via a pin. Each side of the third connecting seat 9 is fixedly connected to an arc-shaped support plate 10 that supports the inner wall of the wellbore. Each of the four arc-shaped support plates 10 is fixedly connected to an airbag 11 that is in close contact with the inner wall of the wellbore. The cross-shaped rod 1 is provided with a support mechanism that allows the arc-shaped support plates 10 to be unfolded and retracted.

[0024] In use, the cross-shaped rod 1 is first fixed to the ground at one end of the wellbore using an external bracket. A cylindrical rod 2 and a circular plate 3 on the cylindrical rod 1 support and fix the circular plate 3. A cross-shaped slider 4 on the cylindrical rod 2 supports and limits the movement of the slider 4. A first connecting seat 5 on the cross-shaped slider 4 and a second connecting seat 7 on the circular plate 3 are positioned correspondingly to the first connecting seat 5. A first adjusting rod 6 and a second adjusting rod 7 on the first and second connecting seats 5 are used for adjustment. The section rod 8, the first adjusting rod 6, and the second adjusting rod 8 are rotatably connected on the first connecting seat 5 and the second connecting seat 7. A third connecting seat 9 is provided on the first adjusting rod 6 and the second adjusting rod 8. The ends of the first adjusting rod 6 and the second adjusting rod 8 away from the first connecting seat 5 and the second connecting seat 7 are rotatably connected to the third connecting seat 9. An arc-shaped support plate 10 is provided on the third connecting seat 9, and the first adjusting rod 6 and the second adjusting rod 8 support the arc-shaped support plate 10. Through the support mechanism provided on the cross-shaped rod 1, the support mechanism can drive the arc-shaped support plate 10 to unfold and support the inner wall of the wellbore.

[0025] Example 2:

[0026] Building upon Example 1, the following is a further step:

[0027] The support mechanism includes a threaded tube 15 that passes through and is rotatably connected to a cross-shaped rod 1, and a threaded sleeve 12 that passes through and is rotatably connected to a cross-shaped slider 4. The end of the threaded tube 15 away from the cross-shaped rod 1 passes through the inner wall of the threaded sleeve 12 and is screwed in. A ring gear 16 is fixedly connected to the outer contour of the threaded tube 15 near the end of the cross-shaped rod 1. A transmission gear 17 driven by a power mechanism is rotatably connected to the side of the cross-shaped rod 1 near the ring gear 16 through a pin. The transmission gear 17 meshes with the ring gear 16 for transmission. The power mechanism is a motor after being energized.

[0028] One end of the cross-shaped slider 4 has a limiting groove 401. The inner wall of the limiting groove 401 is movably connected to a locking block 13 for locking the threaded sleeve 12. The threaded sleeve 12 has a locking groove 121 that matches the outer contour of the locking block 13. A spring 14 for supporting the locking block 13 is fixedly connected to the opposite surface of the locking block 13 and the limiting groove 401.

[0029] In use, the threaded sleeve 12 on the cross-shaped slider 4 allows the threaded sleeve 12 to rotate and connect on the cross-shaped slider 4. The threaded tube 15 on the cross-shaped rod 1 rotates and connects to the cross-shaped rod 1, and is screwed onto the threaded sleeve 12. A locking block 13 on the limiting groove 401, with a locking groove 121 on the threaded sleeve 12, ensures that the outer contour of the locking block 13 matches the inner wall of the locking groove 121. A spring 14 on the locking block 13 ensures that the locking block 13... Under the push of the spring 14, it can engage with the locking groove 121, so that the locking block 13 can lock the threaded sleeve 12. Through the ring gear 16 set on the threaded tube 15 and the transmission gear 17 set on the cross rod 1, the motor drives the transmission gear 17 to reciprocate on a fixed axis. Thus, under the action of the transmission gear 17, the ring gear 16 drives the threaded tube 15 to reciprocate on a fixed axis synchronously. At the same time, the threaded sleeve 12 can move up and down on the column rod 2 along with the threaded tube 15 to drive the cross slider 4 to reciprocate.

[0030] When the cross-shaped slider 4 moves vertically towards the circular plate 3, the first adjusting rod 6 on the first connecting seat 5 rotates horizontally towards the second connecting seat 7 under the action of the cross-shaped slider 4. The second adjusting rod 8 on the second connecting seat 7 rotates horizontally under the action of the arc-shaped support plate 10, causing the arc-shaped support plate 10 to move away from the cross-shaped slider 1 under the action of the second adjusting rod 8. At the same time, the arc-shaped support plate 10 and the airbag 11 can move and unfold towards the wellbore under the action of the first adjusting rod 6 and the second adjusting rod 8. When the cross-shaped slider 4 moves to the limit distance of one end of the circular plate 3, the arc-shaped support plate 10 drives the airbag 11 to contact and support the inner wall of the wellbore.

[0031] When the cross-shaped slider 4 moves in the vertical direction close to the cross-shaped rod 1, it moves in the opposite direction to the structure described above, which can retract the arc-shaped support plate 10 and the airbag 11, thereby releasing the support of the wellbore so that personnel can remove the support equipment from the wellbore.

[0032] Example 3:

[0033] Building upon Example 2, the following is a further step:

[0034] Rectangular through slots 101 are provided at the four corresponding positions on the cross-shaped rod 1. A cylindrical housing 18 is fixedly connected to the inner wall of the rectangular through slot 101 away from the ring gear 16. A connecting pipe 19 is fixedly connected to the inner wall of the cylindrical housing 18 near the airbag 11. The end of the connecting pipe 19 away from the cylindrical housing 18 is fixedly connected to the inner wall of the airbag 11. An auxiliary mechanism for inflating and deflating the airbag 11 is provided on the cylindrical housing 18.

[0035] The auxiliary mechanism includes piston plates 20 movably connected to the inner wall of the cylindrical housing 18. An L-shaped rod 21 is fixedly connected to the end of the piston plate 20 away from the connecting pipe 19. A support block 22 is fixedly connected to the inner wall of the arc-shaped support plate 10 near the top. The end of the L-shaped rod 21 away from the piston plate 20 passes through the support block 22 and is movably connected.

[0036] In use, the support block 22 is provided on the arc-shaped support plate 10, and the L-shaped rod 21 passes through the support block 22 and is movably connected. As the arc-shaped support plate 10 unfolds, the support block 22 pushes the L-shaped rod 21 towards the cylindrical housing 18 under the action of the arc-shaped support plate 10. The piston plate 20 provided on the L-shaped rod 21 moves towards the end of the connecting pipe 19 under the action of the L-shaped rod 21. Simultaneously, the cylindrical housing 18 moves closer to the connecting pipe 19. The internal air pressure at the end is negative, and the connecting pipe 19 connects the cylindrical shell 18 and the airbag 11. The connecting pipe 19 can fill the airbag 11 with the gas inside the cylindrical shell 18, which allows the airbag 11 to expand and make close contact with the inner wall of the wellbore. Since the inner wall of the wellbore is relatively uneven after drilling and has gaps, this avoids the problem that the support plate is difficult to make close contact with the inner wall of the wellbore, which would cause the mud and sand on the inner wall of the wellbore to flow out from the gaps and cause the wellbore to collapse. This further improves the stability of the wellbore support.

[0037] Example 4:

[0038] Building upon Example 3, the following is a further step:

[0039] A circular ring 23 is rotatably connected through the circular plate 3. A fixed pipe 24 is fixedly connected to the inner wall of the circular ring 23. A spiral blade 25 for assisting the discharge of mud from the wellbore is provided on the outer contour of the fixed pipe 24 away from the circular ring 23.

[0040] In use, the ring 23 on the circular plate 3 is rotatably connected to the circular plate 3. The ring 23 is supported by the fixed tube 24 on the ring 23 and the spiral blade 25 on the fixed tube 24. The fixed tube 24 is positioned opposite the threaded tube 15. The top of the cross-shaped rod 1 of the above device passes through the inner wall of the threaded tube 15 and the fixed tube 24 through the drill rod on the external drilling equipment. The end of the drill rod away from the cross-shaped rod 1 is connected to the drill bit, so that the external drilling equipment can perform drilling work.

[0041] Example 5:

[0042] Building upon Example 4, the following is a further step:

[0043] The ring 23 is provided with a plurality of slots 231 evenly distributed at one end near the threaded tube 15, and the threaded sleeve 12 is fixedly connected with a plurality of blocks 26 corresponding to the positions of the slots 231 at one end near the circular plate 3.

[0044] The cross-shaped slider 4 is provided with an unlocking mechanism for unlocking the locking block 13 from the threaded sleeve 12. The unlocking mechanism includes a moving rod 27 that passes through and is movably connected to the side of the cross-shaped slider 4 near the locking block 13. The moving rod 27 has an inclined through groove 271. The side of the locking block 13 near the moving rod 27 is fixedly connected to a connecting block 28, and the end of the connecting block 28 away from the locking block 13 passes through to the inner wall of the inclined through groove 271 and is movably connected.

[0045] In use, the slot 231 on the ring 23 and the locking block 26 on the threaded sleeve 12, along with the cross-shaped slider 4 moving to the limit distance at one end of the circular plate 3, allow the threaded sleeve 12 to drive the locking block 26 to move to the inner wall of the slot 231 for engagement. Simultaneously, one end of the moving rod 27 contacts the circular plate 3, and the other end of the moving rod 27 moves towards the vertical direction of the cross-shaped rod 1 under the resistance of the circular plate 3. Through the inclined through slot 271 on the moving rod 27 and the connecting block 28 on the locking block 13, the connecting block 28 penetrates to the inner wall of the inclined through slot 271 and is limited. As the moving rod 27 moves towards the vertical direction of the cross-shaped rod 1, the other end of the moving rod 27... When the cross-shaped rod 1 moves vertically, the connecting block 28, under the action of the inclined through groove 271, pulls the locking block 13 to move away from the threaded sleeve 12, and the spring 14 is squeezed and contracted under the action of the locking block 13. At this time, the locking block 13 and the locking groove 121 are unlocked, and the threaded sleeve 12 can rotate synchronously with the threaded tube 15. At the same time, the ring 23, under the action of the locking block 26, rotates synchronously with the threaded sleeve 12, so that the fixed tube 24 drives the spiral blade 25 to rotate synchronously under the action of the ring 23. Thus, the spiral blade 25 can help discharge the mud generated during the drilling process out of the wellbore.

[0046] Furthermore, the existing device can make close contact with the inner wall of the well when supporting the inner wall of the cave through the support plate, which is convenient to use and better than traditional products.

[0047] The standard parts used in this embodiment can be purchased directly from the market, while the non-standard structural parts described in the specification and drawings can be processed directly based on existing technical knowledge without any doubt. At the same time, the connection methods of each component adopt mature conventional methods in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so they will not be described in detail here.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A collapse-prevention support device for underground cave wellbores based on geological exploration engineering, characterized in that: The device includes a cross-shaped rod (1), on which columnar rods (2) are fixedly connected at symmetrical positions on both sides. A circular plate (3) is fixedly connected to one end of the columnar rod (2) away from the cross-shaped rod (1). A cross-shaped slider (4) is movably connected to the outer contour of the columnar rod (2). A first connecting seat (5) is fixedly connected to each of the four corresponding positions on the cross-shaped slider (4). A first adjusting rod (6) is rotatably connected to each of the first connecting seats (5) via a pin. A second connecting seat (7) is fixedly connected to the outer contour of the circular plate (3) at a position corresponding to the first connecting seat (5). The second connecting seat (7) is rotatably connected to the second adjusting rod (8) by a pin. The ends of the second adjusting rod (8) and the first adjusting rod (6) away from the cross-shaped slider (4) and the circular plate (3) are rotatably connected to the third connecting seat (9) by a pin. Each side of the third connecting seat (9) is fixedly connected to an arc-shaped support plate (10) that supports the inner wall of the wellbore. Each of the four arc-shaped support plates (10) is fixedly connected to an airbag (11) that is in close contact with the inner wall of the wellbore. The cross-shaped rod (1) is provided with a support mechanism that allows the arc-shaped support plate (10) to be unfolded and retracted. The support mechanism includes a threaded tube (15) that passes through and is rotatably connected to a cross-shaped rod (1), a threaded sleeve (12) that passes through and is rotatably connected to a cross-shaped slider (4), and the end of the threaded tube (15) away from the cross-shaped rod (1) passes through the inner wall of the threaded sleeve (12) and is screwed in. A ring gear (16) is fixedly connected to the outer contour of the threaded tube (15) near the end of the cross-shaped rod (1). A transmission gear (17) driven by a power mechanism is passed through and rotatably connected to the side of the cross-shaped rod (1) near the ring gear (16) by a pin shaft, and the transmission gear (17) meshes with the ring gear (16) for transmission. The power mechanism is a motor after being energized. One end of the cross-shaped slider (4) is provided with a limiting groove (401). The inner wall of the limiting groove (401) is movably connected to a locking block (13) for locking the threaded sleeve (12). The threaded sleeve (12) is provided with a locking groove (121) that matches the outer contour of the locking block (13). A spring (14) for supporting the locking block (13) is fixedly connected to the opposite surface of the locking block (13) and the limiting groove (401).

2. The underground cave wellbore anti-collapse support device based on geological exploration engineering according to claim 1, characterized in that: Rectangular through slots (101) are provided at the four corresponding positions on the cross-shaped rod (1). A cylindrical shell (18) is fixedly connected to the inner wall of the rectangular through slot (101) away from the ring gear (16). A connecting pipe (19) is fixedly connected to the inner wall of the cylindrical shell (18) near the airbag (11). The end of the connecting pipe (19) away from the cylindrical shell (18) is fixedly connected to the inner wall of the airbag (11). An auxiliary mechanism for inflating and deflating the airbag (11) is provided on the cylindrical shell (18).

3. The underground cave wellbore anti-collapse support device based on geological exploration engineering according to claim 2, characterized in that: The auxiliary mechanism includes piston plates (20) movably connected to the inner wall of the cylindrical shell (18). An L-shaped rod (21) is fixedly connected to the end of the piston plate (20) away from the connecting pipe (19). A support block (22) is fixedly connected to the inner wall of the arc-shaped support plate (10) near the top. The end of the L-shaped rod (21) away from the piston plate (20) passes through the support block (22) and is movably connected.

4. The underground cave wellbore anti-collapse support device based on geological exploration engineering according to claim 1, characterized in that: A circular plate (3) is connected to a ring (23) that passes through and rotates. A fixed pipe (24) is fixedly connected to the inner wall of the ring (23). The outer contour of the fixed pipe (24) away from the ring (23) is provided with a spiral blade (25) to assist in the discharge of mud from the wellbore.

5. The underground cave wellbore anti-collapse support device based on geological exploration engineering according to claim 4, characterized in that: The ring (23) has multiple slots (231) evenly distributed at one end near the threaded tube (15), and the threaded sleeve (12) is fixedly connected to multiple blocks (26) corresponding to the positions of the slots (231) at one end near the circular plate (3).

6. The underground cave wellbore anti-collapse support device based on geological exploration engineering according to claim 1, characterized in that: The cross-shaped slider (4) is provided with an unlocking mechanism for unlocking the locking block (13) from the threaded sleeve (12). The unlocking mechanism includes a moving rod (27) that passes through and is movably connected to the side of the cross-shaped slider (4) near the locking block (13). The moving rod (27) has an inclined through groove (271). The side of the locking block (13) near the moving rod (27) is fixedly connected to a connecting block (28), and the end of the connecting block (28) away from the locking block (13) passes through to the inner wall of the inclined through groove (271) and is movably connected.

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