Dredging facility and dredging method for second lining longitudinal drainage pipe of tunnel in corrosion geology

Abstract

The invention relates to the technical field of tunnel construction, in particular to a dredging facility and method for a longitudinal drainage pipe of a second lining of a tunnel in the corrosion geology, the dredging facility comprises a detecting part and a cleaning part, the detecting part and the cleaning part are both arranged on a sleeve, the cleaning part comprises a crystal crushing device, a soft rock cleaning device and a brush cleaning device, and a line is arranged on the sleeve. A plurality of guide wheel sets are arranged on the sleeve, a plurality of connecting devices are arranged on the sleeve, the sleeve is connected with a crystal crushing device, a soft rock cleaning device and a brush cleaning device through the connecting devices, and a driving shaft is arranged in the sleeve and connected with the connecting devices. The blockage condition in the drainage pipe is detected through the detection part, different devices of the cleaning part are selected for cleaning according to different blockage conditions, and when rock crystals exist in the drainage pipe, the crystal crushing device, the soft rock cleaning device and the brush cleaning device are sequentially selected for cleaning. When soft rock or other attachments exist in the drainage pipe, the soft rock cleaning device and the brush cleaning device can be used in sequence.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, and in particular to a dredging facility and a dredging method for a secondary lining longitudinal drainage pipe of a karst geological tunnel. Background Art

[0002] Tunnel engineering is an important part of the infrastructure of highway and railway transportation in mountainous areas. Affected by the terrain and routes, the proportion of karst tunnels has increased significantly among the large number of highway transportation facilities built in recent years. Karst tunnels not only induce the risk of sudden water and mud disasters during construction, but also, as the operating years increase after completion, problems such as the safety of the lining structure caused by the blockage of drainage pipes due to the crystallization of carbonates have gradually become prominent.

[0003] Most of the existing technologies use high-pressure water flow to flush the residual garbage in the tunnel drainage pipe, but carbonate crystals are insoluble in water, and long-term accumulation can easily clog the water pipe and make it difficult to clean.

[0004] Therefore, in view of the above problems, a dredging facility and a dredging method for the secondary lining longitudinal drainage pipe of a karst geological tunnel are proposed to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention develops a dredging facility and method for the secondary lining longitudinal drainage pipe of a karst geological tunnel, which can clean carbonate crystals in the tunnel drainage pipe.

[0006] The technical solution to the technical problem solved by the present invention is: a karst geological tunnel secondary lining longitudinal drainage pipe dredging facility, comprising a detection part and a cleaning part, both of which are arranged on a casing, the cleaning part comprising a crystal crushing device, a soft rock cleaning device and a brush cleaning device, a line is arranged on the casing, a plurality of guide wheel groups are arranged on the casing, a plurality of connecting devices are arranged on the casing, the casing is connected with the crystal crushing device, the soft rock cleaning device and the brush cleaning device through the connecting devices, a driving shaft is arranged in the casing, and the driving shaft is connected to the connecting device.

[0007] The detection part detects the blockage situation in the drain pipe, and different devices of the cleaning part are selected for cleaning according to different blockage situations. When there are rock crystals in the drain pipe, the crystal crushing device, soft rock cleaning device and brush cleaning device are selected in sequence for cleaning. When there are soft rocks or other attachments in the drain pipe, the soft rock cleaning device and brush cleaning device can be used in sequence. The equipment is flexible to use and can be freely replaced according to different blockage situations.

[0008] Preferably, the detection unit includes a protective cover, a camera and a signal transmitting module. The protective cover is arranged at one end of the sleeve. The camera is arranged inside the protective cover. The camera is electrically connected to the signal transmitting module, and the signal transmitting module is electrically connected to the circuit.

[0009] The camera is protected by providing a protective cover, and the video signal is transmitted through the signal transmitting module.

[0010] Preferably, the crystal crushing device comprises a turntable, a scraper and a first connecting sleeve, the first connecting sleeve is arranged on the connecting device, the turntable is arranged on the first connecting sleeve, and a plurality of scrapers are evenly arranged on the outer side of the turntable.

[0011] The rock crystals are broken by the rotation of the turntable and scraper, achieving preliminary cleaning of the drain pipe.

[0012] Preferably, the soft rock cleaning device comprises a telescopic rod, a second connecting sleeve and a scraper. The second connecting sleeve is arranged on the connecting device. A plurality of telescopic rods are evenly arranged on the second connecting sleeve. The scraper is arranged at one end of the telescopic rod away from the second connecting sleeve.

[0013] The scraper is made to fit the drain pipe by the telescopic rod, thereby improving the cleaning effect and facilitating the soft rock cleaning device to enter the drain pipe.

[0014] Preferably, the brush cleaning device includes a third connecting sleeve, a telescopic rod and a brush head. At least two third connecting sleeves are arranged on the sleeve, the third connecting sleeve is connected to the connecting device, a plurality of telescopic rods are evenly arranged on the outside of the third connecting sleeve, the brush head is connected to the plurality of telescopic rods, and the brush head is parallel to the sleeve.

[0015] The brush head is connected to a plurality of telescopic rods, so that the brush head is more stable during the cleaning process, the area of ​​the brush head is increased, and the cleaning effect is improved.

[0016] Preferably, the telescopic rod includes a connecting tube, a compression spring, a mounting rod, a slide groove, a slider, a limiting hole, a mounting platform, a clamping plate and a clamping block. The mounting rod is slidably connected in the connecting tube, a compression spring is arranged between the mounting rod and the connecting tube, slide grooves are symmetrically arranged on both sides of the connecting tube, a slider is arranged on the mounting rod and slides in the slide groove, a mounting platform is arranged at the lower outer part of the connecting tube, a clamping plate is rotatably arranged in the mounting platform, a clamping block is arranged on the side of the clamping plate close to the slider, a limiting hole is arranged on the slider, and the clamping block is arranged in the limiting hole.

[0017] The installation rod can be popped out by setting a compression spring to achieve the telescopic effect. The cooperation of the slide groove and the slider can prevent the installation rod from rotating during the telescopic process. The installation rod is temporarily fixed by the clamping block and the limiting hole.

[0018] Preferably, the telescopic rod also includes an electromagnet, a battery, a signal receiver, a limit rod, a fixed platform, a rotating shaft, a torsion spring and a gear rod. The electromagnet is arranged on the side of the mounting platform away from the card block. The electromagnet is provided with a battery and a signal receiver. The electromagnet is connected to the card plate through magnetic force. A plurality of fixed platforms are arranged on one side of the slide groove of the connecting pipe. A rotating shaft is arranged on the fixed platform. The rotating shaft is connected to the limit rod. A gear rod is arranged above the fixed platform and the gear rod is located on the side of the rotating shaft away from the slide groove. A torsion spring is arranged on the rotating shaft. The torsion spring connects the fixed platform and the limit rod.

[0019] Before the equipment enters the drain pipe, the electromagnet is started to attract the card plate through magnetic force. At this time, the card block is located in the limit hole and the installation rod is in a retracted state. After the equipment reaches the specified position, the electromagnet is turned off, and the installation rod is popped out by the compression spring to achieve extension. At the same time, the limit rod plays a limiting support role for the installation rod. The installation rod passes through the limit rod during the pop-up process. When the installation rod is subjected to force, the limit rod prevents the installation rod from retracting under the action of the gear lever, and the limit rod is kept perpendicular to the installation rod through the torsion spring.

[0020] Preferably, the guide wheel group includes a main fastener, an auxiliary fastener, a support rod, an auxiliary rod and a pulley. The main fastener and the auxiliary fastener are both arranged on the sleeve. Multiple support rods are arranged on the main fastener, and the support rods are connected to the pulley. Multiple auxiliary rods are arranged on the auxiliary fastener, and the auxiliary rods are connected to the support rods.

[0021] By setting up multiple pulleys, the movement of the equipment in the drainage pipe is facilitated, the movement friction is reduced, and the structural strength is improved through the cooperation of the support rod and the auxiliary rod.

[0022] Preferably, the connecting device includes a friction tube, a passive bearing, a bell pipe and a threaded platform. The sleeve is arranged in sections, the friction tubes are symmetrically arranged between adjacent sleeves, bell pipes are arranged in adjacent friction tubes, threaded platforms are arranged at both ends of the active shaft, the active shaft is connected to the bell pipe through the threaded platforms, the first connecting sleeve, the second connecting sleeve and the third connecting sleeve are all arranged on the bell pipe, passive bearings are arranged on both sides of the first connecting sleeve, the second connecting sleeve and the third connecting sleeve are connected to the friction tube, and the bell pipe is connected to the friction tube through the passive bearing.

[0023] When the equipment is cleaning the obstacles in the drainage pipe, the active shaft is rotated, and the active shaft drives the socket pipe to rotate, and then drives the crystal crushing device, soft rock cleaning device and brush cleaning device to rotate and clean. At the same time, a passive bearing is arranged to be connected with the friction tube to reduce friction resistance, and it is convenient to replace through threaded connection.

[0024] The present invention also provides a method for dredging the secondary lining longitudinal drainage pipe of a karst geological tunnel, comprising the following steps: S1. Place the device into the drain pipe and observe the blockage of the drain pipe through the camera; S2. When crystals appear in the drainage pipe, the equipment is equipped with a crystal crushing device, the equipment is moved to the crystal, the crystal crushing device is rotated, and the scraper crushes the rock crystals during the rotation process; S3. Replace the soft rock cleaning device with the equipment, move the equipment to the blocked position, open the telescopic rod of the soft rock cleaning device, rotate the soft rock cleaning device, and use the scraper to clean the blocked debris; S4. Replace the brush cleaning device of the equipment, move the equipment to the blocked position, open the telescopic rod of the brush cleaning device, rotate the brush cleaning device, and use the brush head to further remove foreign matter; S5. When there are soft rocks or other attachments in the drainage pipe, repeat S3-S4.

[0025] The effects provided in the content of the invention are only the effects of the embodiments, rather than all the effects of the invention. The above technical solution has the following advantages or beneficial effects: The detection unit detects the blockage in the drain pipe, and different devices of the cleaning unit are selected for cleaning according to different blockage conditions. When there are rock crystals in the drain pipe, the crystal crushing device, soft rock cleaning device and brush cleaning device are selected in sequence for cleaning. When there are soft rocks or other attachments in the drain pipe, the soft rock cleaning device and brush cleaning device are used in sequence. The equipment is flexible to use and can be freely replaced according to different blockage conditions. Before the equipment enters the drain pipe, the electromagnet is started to attract the card plate through magnetic force. At this time, the card block is located in the limit hole and the installation rod is in a retracted state. After the equipment reaches the specified position, the electromagnet is turned off, and the installation rod is popped out by the compression spring to achieve extension. At the same time, the limit rod plays a limiting support role for the installation rod. The installation rod passes through the limit rod during the pop-up process. When the installation rod is subjected to force, the limit rod prevents the installation rod from retracting under the action of the gear lever, and the limit rod is kept perpendicular to the installation rod through the torsion spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0027] Figure 1 It is a schematic diagram of the structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the structure of the crystal crushing device of the present invention.

[0029] Figure 3 It is a schematic structural diagram of the soft rock cleaning device of the present invention.

[0030] Figure 4 It is a schematic diagram of the structure of the brush cleaning device of the present invention.

[0031] Figure 5 It is a schematic diagram of the structure of the guide wheel group of the present invention.

[0032] Figure 6 It is a schematic diagram of the telescopic rod structure of the present invention.

[0033] Figure 7 The present invention is attached Figure 6 A schematic diagram of the enlarged structure in the middle.

[0034] Figure 8 The present invention is attached Figure 6 Enlarged schematic diagram of the structure at point B in the middle.

[0035] Fig. 9 It is a cross-sectional schematic diagram of the installation platform of the present invention.

[0036] Fig.10 It is a cross-sectional schematic diagram of the telescopic rod of the present invention.

[0037] Fig.11 It is a cross-sectional schematic diagram of the connecting device of the present invention.

[0038] In the figure, 1, sleeve; 2, line; 3, driving shaft; 4, protective cover; 5, camera; 6, signal transmission module; 7, turntable; 8, scraper; 9, first connecting sleeve; 10, telescopic rod; 11, second connecting sleeve; 12, scraper; 13, third connecting sleeve; 14, brush head; 15, connecting pipe; 16, compression spring; 17, mounting rod; 18, slide groove; 19, slider; 20, limiting hole; 21, mounting table; 22, clamping plate; 23, clamping block; 24, electromagnet; 25, battery; 26, signal receiver; 27, limiting rod; 28, fixed table; 29, rotating shaft; 30, torsion spring; 31, gear lever; 32, auxiliary fastener; 33, support rod; 34, auxiliary rod; 35, pulley; 36, friction tube; 37, passive bearing; 38, socket pipe; 39, threaded table; 40, main fastener. DETAILED DESCRIPTION

[0039] In order to clearly illustrate the technical features of the present solution, the present invention is described in detail below through specific implementation methods and in combination with the accompanying drawings. The disclosure below provides many different embodiments or examples for implementing different devices of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. The present invention omits the description of known components and processing technologies and processes to avoid unnecessary limitations on the present invention. The orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] like Figures 1 to 11 As shown, a dredging facility for the secondary lining of a karst geological tunnel includes a detection unit and a cleaning unit, both of which are arranged on a casing 1. The cleaning unit includes a crystal crushing device, a soft rock cleaning device and a brush cleaning device. A line 2 is arranged on the casing 1, a plurality of guide wheel groups are arranged on the casing 1, a plurality of connecting devices are arranged on the casing 1, the casing 1 is connected to the crystal crushing device, the soft rock cleaning device and the brush cleaning device through the connecting devices, a driving shaft 3 is arranged in the casing 1, and the driving shaft 3 is connected to the connecting device. The blockage in the drainage pipe is detected by the detection unit, and different devices of the cleaning unit are selected for cleaning according to different blockage conditions. When there are rock crystals in the drainage pipe, the crystal crushing device, the soft rock cleaning device and the brush cleaning device are selected in sequence for cleaning. When there are soft rocks or other attachments in the drainage pipe, the soft rock cleaning device and the brush cleaning device can be used in sequence. The equipment is flexible to use and can be freely replaced according to different blockage conditions.

[0041] The detection unit includes a protective cover 4, a camera 5 and a signal transmitting module 6. The protective cover 4 is arranged at one end of the casing 1. The camera 5 is arranged inside the protective cover 4. The camera 5 is electrically connected to the signal transmitting module 6. The signal transmitting module 6 is electrically connected to the line 2. The camera 5 is protected by the protective cover 4, and the video signal is transmitted through the signal transmitting module 6.

[0042] The crystal crushing device includes a rotating disk 7, a scraper 8 and a first connecting sleeve 9. The first connecting sleeve 9 is arranged on the connecting device, the rotating disk 7 is arranged on the first connecting sleeve 9, and a plurality of scrapers 8 are evenly arranged on the outer side of the rotating disk 7. The rock crystals are crushed by the rotation of the rotating disk 7 and the scraper 8, so as to achieve preliminary cleaning of the drainage pipe.

[0043] The soft rock cleaning device comprises a telescopic rod 10, a second connecting sleeve 11 and a scraper 12. The second connecting sleeve 11 is arranged on the connecting device, a plurality of telescopic rods 10 are evenly arranged on the second connecting sleeve 11, and a scraper 12 is arranged at one end of the telescopic rod 10 away from the second connecting sleeve 11. The scraper 12 is attached to the drain pipe through the telescopic rod 10, thereby improving the cleaning effect and facilitating the soft rock cleaning device to enter the drain pipe.

[0044] The brush cleaning device includes a third connecting sleeve 13, a telescopic rod 10 and a brush head 14. At least two third connecting sleeves 13 are arranged on the sleeve 1. The third connecting sleeve 13 is connected to the connecting device. A plurality of telescopic rods 10 are evenly arranged outside the third connecting sleeve 13. The brush head 14 is connected to the plurality of telescopic rods 10, and the brush head 14 is parallel to the sleeve 1. The brush head 14 is connected to the plurality of telescopic rods 10, so that the brush head 14 is more stable during the cleaning process, the area of ​​the brush head 14 is increased, and the cleaning effect is improved.

[0045] The telescopic rod 10 includes a connecting tube 15, a compression spring 16, a mounting rod 17, a slide 18, a slider 19, a limiting hole 20, a mounting platform 21, a clamping plate 22 and a clamping block 23. The mounting rod 17 is slidably connected in the connecting tube 15. A compression spring 16 is arranged between the mounting rod 17 and the connecting tube 15. The slides 18 are symmetrically arranged on both sides of the connecting tube 15. A slider 19 is arranged on the mounting rod 17 and slidably connected in the slide 18. A mounting platform 21 is arranged at the lower part of the outer side of the connecting tube 15. A clamping plate 22 is rotatably arranged in the mounting platform 21. A clamping block 23 is arranged on the side of the clamping plate 22 close to the slider 19. A limiting hole 20 is arranged on the slider 19, and the clamping block 23 is arranged in the limiting hole 20. The mounting rod 17 can be popped out by arranging the compression spring 16 to achieve the telescopic effect. The mounting rod 17 is prevented from rotating during the telescopic process by the cooperation of the slide 18 and the slider 19. The mounting rod 17 is temporarily fixed by the clamping block 23 and the limiting hole 20.

[0046] The telescopic rod 10 also includes an electromagnet 24, a battery 25, a signal receiver 26, a limit rod 27, a fixed platform 28, a rotating shaft 29, a torsion spring 30 and a shift rod 31. The electromagnet 24 is arranged on the side of the mounting platform 21 away from the block 23. The electromagnet 24 is provided with a battery 25 and a signal receiver 26. The electromagnet 24 is connected to the card plate 22 through magnetic force. The connecting pipe 15 is located on one side of the slide groove 18 and a plurality of fixed platforms 28 are arranged. A rotating shaft 29 is arranged on the fixed platform 28. The rotating shaft 29 is connected to the limit rod 27. A shift rod 31 is arranged above the fixed platform 28 and the limit rod 27. The shift rod 31 is located on the side of the rotating shaft 29 away from the slide groove 18. A torsion spring 30 is arranged on the rotating shaft 29. The torsion spring 30 connects the fixed platform 28 and the limit rod 27. Before the device enters the drain pipe, the electromagnet 24 is started to attract the card plate 22 by magnetic force. At this time, the card block 23 is located in the limiting hole 20, and the installation rod 17 is in a retracted state. After the device reaches the specified position, the electromagnet 24 is turned off, and the installation rod 17 is popped out by the compression spring 16 to achieve extension. At the same time, the limiting rod 27 plays a limiting support role for the installation rod 17. The installation rod 17 passes through the limiting rod 27 during the pop-up process. When the installation rod 17 is subjected to force, the limiting rod 27 prevents the installation rod 17 from retracting under the action of the gear rod 31, and the torsion spring 30 is used to keep the limiting rod 27 perpendicular to the installation rod 17.

[0047] The guide wheel assembly includes a main fastener 40, an auxiliary fastener 32, a support rod 33, an auxiliary rod 34 and a pulley 35. The main fastener 40 and the auxiliary fastener 32 are both arranged on the sleeve 1. The main fastener 40 is provided with a plurality of support rods 33, the support rods 33 are connected to the pulley 35, and the auxiliary fastener 32 is provided with a plurality of auxiliary rods 34, the auxiliary rods 34 are connected to the support rods 33. The plurality of pulleys 35 are arranged to facilitate the movement of the equipment in the drainage pipe, reduce the movement friction, and improve the structural strength through the cooperation of the support rods 33 and the auxiliary rods 34.

[0048] The connection device includes a friction tube 36, a passive bearing 37, a spigot 38 and a threaded platform 39. The casing 1 is arranged in sections, and the friction tubes 36 are symmetrically arranged between adjacent casings 1. The spigot 38 is arranged in adjacent friction tubes 36. The threaded platforms 39 are arranged at both ends of the driving shaft 3. The driving shaft 3 is connected to the spigot 38 through the threaded platforms 39. The first connecting sleeve 9, the second connecting sleeve 11 and the third connecting sleeve 13 are all arranged on the spigot 38. Passive bearings 37 are arranged on both sides of the first connecting sleeve 9, the second connecting sleeve 11 and the third connecting sleeve 13 and connected to the friction tube 36. The spigot 38 is connected to the friction tube 36 through the passive bearing 37. When the equipment cleans the obstacles in the drainage pipe, the driving shaft 3 is rotated, and the driving shaft 3 drives the spigot 38 to rotate, thereby driving the crystal crushing device, the soft rock cleaning device and the brush cleaning device to rotate and clean. At the same time, the passive bearing 37 is arranged to be connected to the friction tube 36 to reduce friction resistance.

[0049] The present invention also provides a method for dredging the secondary lining longitudinal drainage pipe of a karst geological tunnel, comprising the following steps: S1. Place the device into the drain pipe and observe the blockage of the drain pipe through camera 5; S2. When crystals appear in the drainage pipe, the equipment is equipped with a crystal crushing device, the equipment is moved to the crystals, the crystal crushing device is rotated, and the scraper 8 crushes the rock crystals during the rotation process; S3, the equipment replaces the soft rock cleaning device, moves the equipment to the blocked position, opens the telescopic rod 10 of the soft rock cleaning device, rotates the soft rock cleaning device, and the scraper 12 cleans the blocked debris; S4, the equipment replaces the brush cleaning device, moves the equipment to the blocked position, opens the telescopic rod 10 of the brush cleaning device, rotates the brush cleaning device, and the brush head 14 further removes foreign matter; S5. When there are soft rocks or other attachments in the drainage pipe, repeat S3-S4.

[0050] Working principle: Working principle: Detect the blockage situation in the drain pipe through the detection part, and select different devices of the cleaning part for cleaning according to different blockage situations. When there are rock crystals in the drain pipe, select the crystal crushing device, soft rock cleaning device and brush cleaning device in turn for cleaning. When there are soft rocks or other attachments in the drain pipe, use the soft rock cleaning device and brush cleaning device in turn. When using the soft rock cleaning device and the brush cleaning device, first move the equipment to the blockage, then cut off the power to the electromagnet 24, the telescopic rod 10 pops out, the scraper 12 and the brush head 14 fit the drain pipe, and rotate the active shaft 3 for cleaning.

[0051] Although the above describes the specific implementation mode of the invention in conjunction with the drawings, it is not intended to limit the scope of protection of the invention. Based on the technical solution of the present invention, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present invention.

Claims

1. A dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel. Its characteristics are: The invention comprises a detection part and a cleaning part, both of which are arranged on a casing (1), the cleaning part comprises a crystal crushing device, a soft rock cleaning device and a brush cleaning device, a line (2) is arranged on the casing (1), a plurality of guide wheel groups are arranged on the casing (1), a plurality of connecting devices are arranged on the casing (1), the casing (1) is connected to the crystal crushing device, the soft rock cleaning device and the brush cleaning device via the connecting devices, a driving shaft (3) is arranged in the casing (1), and the driving shaft (3) is connected to the connecting devices.

2. A dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claim 1, Its characteristics are: The detection unit comprises a protective cover (4), a camera (5) and a signal transmission module (6); the protective cover (4) is arranged at one end of the sleeve (1); the camera (5) is arranged inside the protective cover (4); the camera (5) is electrically connected to the signal transmission module (6); and the signal transmission module (6) is electrically connected to the circuit (2).

3. A dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claim 1, Its characteristics are: The crystal crushing device comprises a turntable (7), a scraper (8) and a first connecting sleeve (9), wherein the first connecting sleeve (9) is arranged on the connecting device, the turntable (7) is arranged on the first connecting sleeve (9), and a plurality of scrapers (8) are evenly arranged on the outer side of the turntable (7).

4. The dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claim 1, Its characteristics are: The soft rock cleaning device comprises a telescopic rod (10), a second connecting sleeve (11) and a scraper (12); the second connecting sleeve (11) is arranged on the connecting device; a plurality of telescopic rods (10) are evenly arranged on the second connecting sleeve (11); and the scraper (12) is arranged at one end of the telescopic rod (10) away from the second connecting sleeve (11).

5. The dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claim 1, Its characteristics are: The brush cleaning device comprises a third connecting sleeve (13), a telescopic rod (10) and a brush head (14); at least two third connecting sleeves (13) are arranged on the sleeve (1); the third connecting sleeves (13) are connected to the connecting device; a plurality of telescopic rods (10) are evenly arranged outside the third connecting sleeve (13); the brush head (14) is connected to the plurality of telescopic rods (10); and the brush head (14) is parallel to the sleeve (1).

6. A dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claim 5, Its characteristics are: The telescopic rod (10) comprises a connecting tube (15), a compression spring (16), a mounting rod (17), a slide groove (18), a slider (19), a limiting hole (20), a mounting platform (21), a clamping plate (22) and a clamping block (23); the mounting rod (17) is slidably connected in the connecting tube (15); a compression spring (16) is arranged between the mounting rod (17) and the connecting tube (15); slide grooves (18) are symmetrically arranged on both sides of the connecting tube (15); a slider (19) is arranged on the mounting rod (17) and slidably connected in the slide groove (18); a mounting platform (21) is arranged at the lower part of the outer side of the connecting tube (15); a clamping plate (22) is rotatably arranged in the mounting platform (21); a clamping block (23) is arranged on a side of the clamping plate (22) close to the slider (19); a limiting hole (20) is arranged on the slider (19); and the clamping block (23) is arranged in the limiting hole (20).

7. A dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claim 6, Its characteristics are: The telescopic rod (10) further comprises an electromagnet (24), a battery (25), a signal receiver (26), a limit rod (27), a fixing platform (28), a rotating shaft (29), a torsion spring (30) and a shift rod (31); the electromagnet (24) is arranged on a side of the mounting platform (21) away from the clamping block (23); the electromagnet (24) is provided with a battery (25) and a signal receiver (26); the electromagnet (24) is connected to the clamping plate (22) by magnetic force; the connecting tube (1 5) A plurality of fixed platforms (28) are arranged on one side of the slide groove (18), a rotating shaft (29) is arranged on the fixed platform (28), the rotating shaft (29) is connected to the limiting rod (27), a shift rod (31) is arranged on the fixed platform (28) above the limiting rod (27), the shift rod (31) is located on the side of the rotating shaft (29) away from the slide groove (18), a torsion spring (30) is arranged on the rotating shaft (29), and the torsion spring (30) connects the fixed platform (28) and the limiting rod (27).

8. The dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claim 1, Its characteristics are: The guide wheel assembly comprises a main fastener (40), an auxiliary fastener (32), a support rod (33), an auxiliary rod (34) and a pulley (35); the main fastener (40) and the auxiliary fastener (32) are both arranged on the sleeve (1); a plurality of support rods (33) are arranged on the main fastener (40); the support rods (33) are connected to the pulley (35); a plurality of auxiliary rods (34) are arranged on the auxiliary fastener (32); the auxiliary rods (34) are connected to the support rods (33).

9. The dredging facility for the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claim 1, Its characteristics are: The connecting device comprises a friction tube (36), a passive bearing (37), a bell-and-spigot pipe (38) and a threaded platform (39); the sleeve (1) is arranged in sections; the friction tubes (36) are symmetrically arranged between adjacent sleeves (1); bell-and-spigot pipes (38) are arranged in adjacent friction tubes (36); threaded platforms (39) are arranged at both ends of the active shaft (3); the active shaft (3) is connected to the bell-and-spigot pipe (38) via the threaded platforms (39); the first connecting sleeve (9), the second connecting sleeve (11) and the third connecting sleeve (13) are all arranged on the bell-and-spigot pipe (38); passive bearings (37) are arranged on both sides of the first connecting sleeve (9), the second connecting sleeve (11) and the third connecting sleeve (13) and are connected to the friction tube (36); the bell-and-spigot pipe (38) is connected to the friction tube (36) via the passive bearing (37).

10. A method for dredging the secondary lining longitudinal drainage pipe of a karst geological tunnel according to claims 1-9, Its characteristics are The steps include: S1. Place the device into the drain pipe and observe the blockage of the drain pipe through the camera (5); S2. When crystals appear in the drainage pipe, the equipment is equipped with a crystal crushing device, the equipment is moved to the crystals, the crystal crushing device is rotated, and the scraper (8) crushes the rock crystals during the rotation process; S3, the equipment replaces the soft rock cleaning device, moves the equipment to the blocked position, opens the telescopic rod (10) of the soft rock cleaning device, rotates the soft rock cleaning device, and the scraper (12) cleans the blocked debris; S4, the equipment replaces the brush cleaning device, moves the equipment to the blocked position, opens the telescopic rod (10) of the brush cleaning device, rotates the brush cleaning device, and the brush head (14) further removes foreign matter; S5. When there are soft rocks or other attachments in the drainage pipe, repeat S3-S4.

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