Karst area hole grouting device and using method thereof

Abstract

The invention discloses a karst area hole grouting device and a using method thereof, the karst area hole grouting device comprises a concentric-square-shaped bottom plate and four universal wheels rotationally mounted at the bottom of the concentric-square-shaped bottom plate in a rectangular shape, and a material passing box is arranged above the concentric-square-shaped bottom plate. The grouting pipe can be conveniently and integrally inserted, connected and stably supported on the ground during grouting, the risk that the grouting pipe displaces and topples due to vibration during grouting is reduced, stability is provided for grouting work, slurry spinning, circulating vertical pressing and tamping are integrally conducted through single driving during grouting, caked slurry is integrally smashed, the stable grouting compaction effect is provided, and the grouting efficiency is improved. The grouting stability and compactness are improved, the mode that rotary and vertical dual-pressure, tamping and smashing are achieved through single-drive integration is utilized, it is not needed to independently arrange multiple drive devices to operate at the same time to increase energy consumption, the good energy-saving application effect is achieved, dual-pressure tamping can be automatically stopped after grouting is completed, automatic reset is achieved, and an alarm is given to remind personnel; and the use automation degree and convenience are improved.

Description

Technical Field

[0001] The invention relates to the technical field of grouting equipment, and in particular to a karst area hole grouting device and a use method thereof. Background Art

[0002] When constructing in karst areas with hollows and similar landforms, since this type of landform is seriously hollow inside, it is often necessary to pour the foundation here before construction to fill the holes inside it so that it can withstand the pressure from the ground and avoid collapse of a certain gap due to pressure, causing accidents, and strengthen the bearing capacity of the foundation to ensure the safety of the upper construction buildings; generally, holes are drilled to the location of the holes in the karst area, and grouting equipment is used, such as a grouting truck connected to a grouting pipe, and a lower grade cement slurry is used for grouting work. After the lower grade cement mortar is cured, it plays a sealing and reinforcement role, which is also called mortar sealing reinforcement method.

[0003] The existing grouting equipment is connected to the grouting pipe to directly inject grout into the grouting borehole connected to the hole. There are the following problems in application: 1. At the moment of grouting, it is inevitable that a large impact will be generated on the grouting pipe, causing it to vibrate. During the grouting process, the grouting pipe is prone to tilt and displacement due to vibration, affecting the stability of grouting; 2. Because the holes in some karst areas are deep (and during grouting, the internal gas must be discharged to reduce the bubble hollowing phenomenon, the grouting borehole cannot be completely closed, resulting in the inability to use air pressure to increase pressure through simple closure), and the slurry is supplied only through the grouting pipe, which is difficult to provide a stable grouting compaction effect, and the slurry is prone to get stuck in the grouting borehole, resulting in a large void in the lower part, and the grouting stability and compactness are poor; 3. After the grouting is completed, it is not possible to automatically remind the personnel in time and stop the operation accordingly, and there is a risk of a large amount of slurry overflowing and wasting due to negligence after grouting;

[0004] In order to solve the problems that the grouting pipe is prone to unstable tilt displacement due to vibration during the grouting process, it is difficult to stabilize and compact the grouting, resulting in a large void in the lower part, and the personnel cannot be automatically reminded and the operation cannot be stopped in time after the grouting is completed. Therefore, we propose a hole grouting device in karst area and its use method to solve the above problems. Summary of the invention

[0005] The present invention proposes a karst area hole grouting device and a method of using the same, which solves the problems that the grouting pipe is prone to unstable tilt displacement due to vibration during the grouting process, it is difficult to stably and compactly grouting, resulting in a large void in the lower part, and the personnel cannot be automatically reminded in time and the corresponding stop operation cannot be performed after the grouting is completed.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grouting device for holes in a karst area, comprising a circular bottom plate and four universal wheels rotatably mounted in a rectangular shape on the bottom of the circular bottom plate, a feed box is arranged above the circular bottom plate, an L-shaped feed pipe for connecting to an external slurry supply device is connected and fixed to the front top of the feed box, the bottom of the feed box is arranged in a conical structure and connected and fixed to a grouting pipe located in the circular bottom plate, an integrated lifting and stabilizing support assembly for driving the grouting pipe to be lifted and lowered and inserted into the ground for stabilization is installed on the top of the circular bottom plate; the integrated lifting and stabilizing support assembly is used to drive the grouting pipe to be lifted and lowered, and to intersect with the ground for positioning and stabilizing and releasing positioning respectively during the lifting and lowering, after the personnel pre-drill grouting holes connected to the holes in the karst area, the grouting pipe is lowered and inserted into the grouting borehole, the L-shaped feed pipe is connected to the external slurry supply device, and is used to supply slurry to the feed box, and the slurry is injected into the grouting borehole and the holes in the karst area through the grouting pipe;

[0007] The top of the material passing box is fixedly connected to a rectangular box with an opening at the bottom, a support plate is fixedly connected between the inner walls on both sides of the rectangular box, rectangular through holes are opened on the inner walls on both sides of the rectangular box, a reciprocating lifting rotary drive feeding double pressure component for reciprocating vertical pressing and rotary feeding is rotatably installed at the bottom of the support plate, an output shaft and a driving motor fixedly connected to the reciprocating lifting rotary drive feeding double pressure component are fixedly installed on the top inner wall of the rectangular box, the outer sliding sleeve of the rectangular box is provided with a rectangular sliding sleeve, and both sides of the reciprocating lifting rotary drive feeding double pressure component are fixedly connected with a motor for driving the rectangular sliding sleeve to reciprocately rise and fall The leveraged changing direction motion component has an integrated circulating tamping component installed on both sides of the rectangular sleeve, which surrounds the grouting pipe and is used for reciprocating tamping. The reciprocating lifting rotary drive and feeding double pressure component is used to rotate and press the slurry downward and push it vertically in an integrated cycle, forming a continuous double pressure effect, improving the grouting stability and compactness. The leveraged changing direction motion component is used to use the reciprocating lifting force of the reciprocating lifting rotary drive and feeding double pressure component to change direction and drive the rectangular sleeve to move reciprocatingly up and down. The integrated circulating tamping component is used to circulate and continuously vibrate the injected slurry when the rectangular sleeve moves reciprocatingly up and down, so as to further improve the compactness of the slurry.

[0008] Preferably, the integrated lifting and stabilizing support assembly includes a lifting plate fixedly mounted on the outside of the grouting pipe, multi-stage electric telescopic rods whose protruding ends are fixedly connected to the bottom of the lifting plate are fixedly installed on both sides of the top of the circular bottom plate, a synchronous control switch is fixedly installed on the front side of the multi-stage electric telescopic rod located on the left, and the two multi-stage electric telescopic rods are electrically connected to the synchronous control switch, and two positioning rods with conical structures at the bottom ends are fixedly connected on both sides of the bottom of the lifting plate, and four vertical guide through holes are opened on the top of the circular bottom plate, which are respectively slidably mounted on the outer sides of the corresponding positioning rods.

[0009] The top of the circular shaft is provided with a avoidance hole adapted for the reciprocating screw, and the bottom inner wall of the avoidance hole is provided with a square rotating rod, and the bottom inner wall of the reciprocating screw is provided with a square sliding hole which is slidably mounted on the outer wall of the square rotating rod. Two vertical guide rods are fixedly connected between the bottom of the support plate and the top of the material passing box, and an outer edge is integrally provided on the outer top of the lifting sleeve and is slidably mounted on the two vertical guide rods, and both sides of the circular shaft are fixedly connected with a stirring knife rod located in the material passing box.

[0010] Preferably, the leverage-type direction-changing motion component includes two first rectangular rods, and the adjacent sides of the two first rectangular rods are fixedly connected to the outer side of the outer edge of the lifting sleeve, and the repelling sides of the two first rectangular rods are embedded and fixed with a first rack, and the inner walls on both sides of the rectangular sliding sleeve are fixedly connected with connecting seats, and the adjacent sides of the two connecting seats are respectively inserted into the rectangular box through corresponding rectangular perforations, and the adjacent sides of the two connecting seats are fixedly connected with a second rectangular rod, and the adjacent sides of the two second rectangular rods are embedded and fixed with a second rack, and a gear rotatably installed between the first rack and the corresponding second rack is meshed with a gear, and the support plate sliding sleeve is arranged on the two first rectangular rods and the two second rectangular rods.

[0011] Preferably, the integrated circulating tamping assembly includes two symmetrically arranged L-shaped connecting rods, the adjacent ends of the two L-shaped connecting rods are respectively fixedly connected to the two sides of the rectangular sliding sleeve, and the two sides of the material passing box are fixedly connected with rectangular guide sleeves, the rectangular guide sleeve sliding sleeves are arranged on the corresponding L-shaped connecting rods, and the bottom end of the L-shaped connecting rod is fixedly connected with a connecting rod, and the bottom ends of the two connecting rods are fixedly connected with the same sliding sleeve. The vertical guide sleeve is arranged on the outside of the grouting pipe, and the bottom of the vertical guide sleeve is fixedly connected with a plurality of tamping rods in a ring shape and at equal intervals. The plurality of tamping rods are arranged around the grouting pipe and protrude from the bottom end of the grouting pipe.

[0012] Preferably, a battery is fixedly installed on the left side of the top of the circular bottom plate, and the two multi-stage electric telescopic rods and the drive motor are electrically connected to the battery.

[0013] Preferably, a rectangular telescopic protective rubber sleeve is fixedly connected between the bottom of the rectangular sliding sleeve and the top of the material passing box, and the rectangular box is located in the rectangular telescopic protective rubber sleeve.

[0014] Preferably, a plurality of ventilation holes are provided on the tops of the four sides of the rectangular box, and filter nets are fixedly installed in the ventilation holes.

[0015] Preferably, a hole blocking self-stop control alarm component for automatically controlling the shutdown of the drive motor and alarming after the grouting is completed is also installed at the bottom of the lifting plate. The hole blocking self-stop control alarm component is used to provide a way for the gas in the grouting borehole to be discharged during grouting, and automatically alarm to remind personnel and stop the double-pressure conveying and ramming work when the slurry is squeezed after the grouting is completed; the hole blocking self-stop control alarm component includes a PLC controller fixedly installed on the front side of the battery and electrically connected to the multi-stage electric telescopic rod and the drive motor, the top of the PLC controller is fixedly and electrically connected to an audible and visual alarm, and both sides of the bottom of the lifting plate are fixedly connected to outer tubes, and the outer tubes slide inside An inner rod is sleeved, and two pressure sensors located in the corresponding outer tubes are fixedly connected to the bottom of the lifting plate. A spring is fixedly connected between the bottom of the pressure sensor and the top of the corresponding inner rod. The two pressure sensors are electrically connected to the PLC controller, and the PLC controller, the sound and light alarm and the pressure sensor are electrically connected to the battery. The bottom ends of the two inner rods are fixedly connected to the same baffle plate, which is slidably sleeved on the outside of the grouting pipe and multiple tamping rods. The outside of the baffle plate is provided with multiple exhaust holes with openings at the bottom in a circular shape and at equal intervals. The baffle plate is used to shield the grouting drilled holes connecting the holes in the karst area and to exhaust gas using the exhaust holes during grouting.

[0016] The present invention also proposes a method for using a hole grouting device in a karst area, comprising the following steps:

[0017] S1: Use a multi-stage electric telescopic rod to drive the lifting plate to move downward, drive the grouting pipe to be inserted into the grouting borehole connected to the karst area, and the lifting plate drives four positioning rods to be inserted into the ground for positioning, stabilizing and preventing displacement. The external slurry supply equipment supplies slurry into the feed box through the L-shaped feed pipe, and the slurry is injected into the grouting borehole and the holes in the karst area through the grouting pipe;

[0018] S2: The driving motor drives the reciprocating screw to rotate through the rotating shaft. The reciprocating screw fits the square rotating rod through the square sliding hole and its own edges and corners to drive the square rotating rod to rotate as a whole. The square rotating rod drives the round shaft to rotate. The round shaft drives the spiral conveying blade to rotate, and the slurry entering the grouting pipe is conveyed and squeezed to form a spinning effect, and the initial pressure is applied. The round shaft also drives the stirring knife bar to move up and down and rotate to rotate and break the agglomerated slurry to prevent the agglomerated slurry from causing the grouting work to get stuck, and further improve the grouting stability.

[0019] S3: When the reciprocating screw described in S2 rotates, it also drives the reciprocating wire sleeve to move up and down reciprocatingly, the reciprocating wire sleeve drives the lifting sleeve to move up and down reciprocatingly, the lifting sleeve drives the round shaft to move up and down reciprocatingly, the round shaft drives the square rotating rod to slide back and forth vertically in the square sliding hole, and at the same time the round shaft drives the spiral conveying blade to move up and down reciprocatingly, and the spiral conveying blade that moves up and down reciprocatingly is used to further achieve the effect of cyclically squeezing the slurry downward, and perform secondary pressurization, and use the rotation downward pressure and integrated cyclic vertical pushing to achieve a continuous double pressure effect, providing a stable grouting compaction effect;

[0020] S4: When the lifting sleeve described in S3 moves reciprocatingly up and down, it drives the two first rectangular rods to move reciprocatingly up and down, and the two first rectangular rods drive the two gears to rotate reciprocatingly through the two first racks, and the two gears drive the second rectangular rods to change direction through the two second racks to move reciprocatingly up and down, and the two second rectangular rods drive the rectangular sliding sleeve to move reciprocatingly up and down through the two connecting seats, so as to achieve the effect of driving the rectangular sliding sleeve to move reciprocatingly up and down by leveraging the force;

[0021] S5: When the rectangular sliding sleeve described in S4 moves back and forth, it drives the vertical guide sleeve to move back and forth through two L-shaped connecting rods and two connecting rods in turn. The vertical guide sleeve drives multiple tamping rods to move back and forth to tamping the discharged slurry, thereby reducing the phenomenon of the slurry being stuck at the injection port. The tamping is used to further improve the compactness of the slurry. The driving motor is used to drive the whole body to realize the functions of vertical and rotary dual pressure and tamping, thereby realizing the multi-functional auxiliary pressurization and compaction in the grouting process while reducing energy consumption.

[0022] S6: When the lifting plate described in S1 moves downward, it also drives the hole-blocking plate downward to cover the top of the grouting borehole through the outer tube, the pressure sensor, the spring and the inner rod in sequence to perform the hole-blocking work. The multiple exhaust holes are used to discharge the gas in the grouting borehole and the hole during grouting. After the grouting is completed, the slurry has a certain solidity and its squeezing force is greater than that of the gas, so it cannot be completely moved out from the exhaust holes. After the slurry is filled, it will press the hole-blocking plate upward. Under the top pressure, the hole-blocking plate moves upward and drives the two inner rods to compress the two springs upward, so that the squeezing force of the spring on the pressure sensor increases. The pressure sensor detects the squeezing force and transmits it to the PLC controller. The pressure value exceeds the preset value, the PLC controller controls the sound and light alarm to turn on, the multi-stage electric telescopic rod to start forward and the drive motor to turn off, stop the double-pressure feeding work, and alarm to remind personnel to stop feeding into the material box. The multi-stage electric telescopic rod is used to start forward to drive the lifting plate to rise, so as to automatically drive the grouting pipe to move out and drive the positioning rod to separate from the ground upward to release the steady stop state.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. This hole grouting device in the karst area is convenient for driving the grouting pipe into the grouting borehole and performing positioning, plugging, stabilizing and supporting work on the ground through the cooperation of the grouting pipe, the material box, the integrated lifting and stabilizing support component and the round bottom plate, so as to reduce the risk of displacement and tipping of the grouting pipe due to vibration during grouting, and provide stability for the grouting work; it has the advantages of ensuring convenient application and stable grouting position;

[0025] 2. The hole grouting device in the karst area can be used in combination with the rectangular box, driving motor, rectangular sleeve, reciprocating lifting rotary drive feeding double pressure component, leveraging changing direction motion component and integrated circulating tamping component. During grouting, the device can spin, circulate vertically and tamp the slurry by a single drive, and can break up the agglomerated slurry that enters. The continuous double pressure effect formed by spinning and circulating vertical pressure can provide a stable grouting compaction effect, improve the grouting stability and compaction, reduce the phenomenon of lower void caused by blockage after slurry injection, and prevent the agglomerated slurry from blocking the grouting work by breaking up the agglomerated slurry, further improve the grouting stability, and cooperate with the integrated tamping and tamp to reduce the phenomenon of slurry being stuck at the injection port, and further improve the slurry compaction by tamping and tamp; it has the effect of performing integrated dual-mode pressurization and tamping application without affecting the internal gas discharge, thereby ensuring high adaptability and multiple significant improvement effects of grouting stability and high compaction, and providing favorable technical support for karst hole exhaust and compaction grouting;

[0026] 3. This hole grouting device in the karst area uses a single drive motor to realize the functions of vertical rotation and double pressure, tamping and breaking agglomerated slurry, realizing multi-functional auxiliary pressure boosting and compaction during the grouting process while reducing energy consumption. There is no need to set up multiple drive devices to run simultaneously to increase energy consumption, and it has a good energy-saving effect during the grouting process;

[0027] 4. This hole grouting device in the karst area, through the cooperation of the integrated lifting and stabilizing support component and the hole blocking automatic stop control alarm component, can automatically stop the double-pressure feeding and ramming after the grouting is completed, and automatically reset and alarm to remind personnel to take corresponding measures, thereby reducing the risk of large-scale slurry overflow and waste due to negligence in not stopping in time after grouting, further improving the degree of automation and convenience of use; it has the significant advantages of high degree of application automation for easy use by personnel, without the need for personnel to have a high level of complex operation skills, reducing restrictions on on-site grouting workers.

[0028] The present invention facilitates the integrated plugging and stabilizing of the grouting pipe on the ground during grouting, reduces the risk of the grouting pipe being displaced and tipped over due to vibration during grouting, provides stability for the grouting work, facilitates the spinning, cyclic vertical pressing and tamping of the slurry by a single drive during grouting, and breaks up the agglomerated slurry, provides a stable grouting compacting effect, improves the grouting stability and compactness, utilizes a single drive to realize the spinning and vertical dual pressing, tamping and breaking, does not need to separately set up multiple driving devices to run simultaneously to increase energy consumption, has good energy-saving application effect, and is convenient to automatically stop the double pressing and tamping after the grouting is completed, and automatically resets and alarms to remind personnel, thereby improving the degree of automation and convenience in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a hole grouting device for a karst area proposed in the first embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the main cross-sectional structure of a hole grouting device in a karst area proposed in the first embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of a three-dimensional structure of a rectangular box in a cutaway state of a hole grouting device in a karst area proposed in the first embodiment of the present invention;

[0032] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0033] Figure 5 This is a schematic structural diagram of a hole grouting device for a karst area proposed in the second embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the main cross-sectional structure of a hole grouting device in a karst area proposed in the second embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of a bottom-up stereoscopic structure of a hole-blocking plate of a hole grouting device for a karst area proposed in the second embodiment of the present invention;

[0036] Figure 8 for Figure 6 A schematic diagram of the enlarged structure of part B in FIG.

[0037] Fig. 9 for Figure 6 A sectional schematic diagram of the grouting pipe in the figure is inserted into a grouting borehole connected to a hole in a karst area and is waiting for grouting and stable support.

[0038] In the figure: 1, circular bottom plate; 101, universal wheel; 102, battery; 2, material box; 201, grouting pipe; 202, L-shaped feeding pipe; 3, lifting plate; 301, positioning rod; 302, multi-stage electric telescopic rod; 303, synchronous control switch; 4, rectangular box; 401, driving motor; 402, filter screen; 403, support plate; 404, rectangular perforation; 5, round shaft; 501, avoidance hole; 502, square rotating rod; 503, reciprocating screw; 504, square sliding hole; 505, reciprocating screw sleeve; 506, lifting sleeve; 507, spiral conveying blade; 5 08, stirring knife bar; 509, vertical guide rod; 6, first rectangular rod; 601, first rack; 602, second rectangular rod; 603, second rack; 604, connecting seat; 605, gear; 7, rectangular sliding sleeve; 701, L-shaped connecting rod; 702, rectangular guide sleeve; 703, connecting rod; 704, vertical guide sleeve; 705, tamping rod; 706, rectangular telescopic protective rubber sleeve; 8, PLC controller; 801, sound and light alarm; 802, outer tube; 803, inner rod; 804, spring; 805, pressure sensor; 806, hole-blocking plate; 807, exhaust hole. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Embodiment 1

[0041] like Figures 1 to 4 As shown, a hole grouting device for karst areas proposed in this embodiment includes a circular bottom plate 1 and four universal wheels 101 rotatably mounted on the bottom of the circular bottom plate 1 in a rectangular shape. A material passing box 2 is arranged above the circular bottom plate 1. The front top of the material passing box 2 is connected and fixed with an L-shaped feed pipe 202 for connecting with an external slurry supply device. The bottom of the material passing box 2 is arranged in a conical structure and is connected and fixed with a grouting pipe 201 located in the circular bottom plate 1. A device for driving the grouting pipe 201 is installed on the top of the circular bottom plate 1. 01 An integrated lifting and stabilizing support component that can be lowered and inserted into the ground to stabilize the support; the integrated lifting and stabilizing support component is used to drive the grouting pipe 201 to rise and fall, and to intersect with the ground to position and stabilize the support and release the positioning work during the rise and fall. After the personnel have drilled a grouting hole connected to the hole in the karst area in advance, the grouting pipe 201 is lowered and inserted into the grouting borehole. The L-shaped feed pipe 202 is connected to the external slurry supply equipment and is used to supply slurry into the feed box 2. The slurry is injected into the grouting borehole and the holes in the karst area through the grouting pipe 201;

[0042] A rectangular box 4 with an opening at the bottom is fixedly connected to the top of the material passing box 2, a support plate 403 is fixedly connected between the inner walls on both sides of the rectangular box 4, rectangular through holes 404 are provided on the inner walls on both sides of the rectangular box 4, a reciprocating lifting type rotary drive feeding double pressure component for reciprocating vertical pressing and rotary feeding is rotatably installed at the bottom of the support plate 403, a driving motor 401 fixedly connected with an output shaft and the reciprocating lifting type rotary drive feeding double pressure component is fixedly installed on the top inner wall of the rectangular box 4, a plurality of ventilation holes are provided on the top of the four sides of the rectangular box 4, and a filter screen 402 is fixedly installed in the ventilation holes for ventilation and heat dissipation, a rectangular sleeve 7 is provided on the outer sliding sleeve of the rectangular box 4, and a lever-type direction-changing motion component for driving the rectangular sleeve 7 to reciprocate and rise and fall is fixedly connected on both sides of the reciprocating lifting type rotary drive feeding double pressure component. The side is installed with an integrated circulating pounding assembly that surrounds the grouting pipe 201 and is used for reciprocating pounding. A rectangular telescopic protective rubber sleeve 706 is fixedly connected between the bottom of the rectangular sleeve 7 and the top of the material box 2. The rectangular box 4 is located in the rectangular telescopic protective rubber sleeve 706. The rectangular telescopic protective rubber sleeve 706 is used to block dust and debris from entering the rectangular box 4 from the outside; the reciprocating lifting type rotary drive and feeding double pressure assembly is used to rotate and press the slurry downward and push it vertically in an integrated cycle to form a continuous double pressure effect, thereby improving the stability and compactness of the grouting. The leveraged changing direction motion assembly is used to use the reciprocating lifting force of the reciprocating lifting type rotary drive and feeding double pressure assembly to change direction and drive the rectangular sleeve 7 to move back and forth up and down. The integrated circulating pounding assembly is used to circulate and continuously vibrate the injected slurry when the rectangular sleeve 7 moves back and forth up and down to further improve the compactness of the slurry.

[0043] Specifically, the integrated lifting and stabilizing support assembly includes a lifting plate 3 fixedly sleeved on the outside of the grouting pipe 201, wherein the top of the lifting plate 3 is provided with a sleeve hole fixedly connected to the outside of the grouting pipe 201, and multi-stage electric telescopic rods 302 whose protruding ends are fixedly connected to the bottom of the lifting plate 3 are fixedly installed on both sides of the top of the circular bottom plate 1, and a synchronous control switch 303 is fixedly installed on the front side of the multi-stage electric telescopic rod 302 on the left side, and the two multi-stage electric telescopic rods 302 are electrically connected to the synchronous control switch 303, and two positioning rods 301 with a conical structure at the bottom are fixedly connected on both sides of the bottom of the lifting plate 3, and four vertical holes are provided on the top of the circular bottom plate 1, which are respectively slidably sleeved with the corresponding outer sides of the positioning rods 301. The guide hole is provided, and a battery 102 is fixedly installed on the left side of the top of the circular bottom plate 1. Two multi-stage electric telescopic rods 302 and a driving motor 401 are electrically connected to the battery 102. The lifting plate 3, the multi-stage electric telescopic rod 302, the synchronous control switch 303 and the positioning rod 301 are coordinated, and the two multi-stage electric telescopic rods 302 are used to drive the lifting plate 3 to move downward or upward. When the lifting plate 3 moves downward, the grouting pipe 201 is driven downward to be inserted into the grouting borehole, and the four positioning rods 301 are driven downward to be inserted into the ground for positioning, so as to achieve the effect of integrated positioning and stabilization when the grouting pipe 201 is driven to be inserted into the grouting borehole, thereby providing stability for the grouting work and preventing displacement due to vibration during grouting.

[0044] Furthermore, the reciprocating lifting rotary drive feeding double pressure assembly includes a rotating shaft rotatably installed at the bottom of the support plate 403 and fixedly connected to the output shaft of the driving motor 401, wherein the bottom of the support plate 403 is provided with a circular through hole, and two first bearings are fixedly sleeved between the circular through hole and the outer side of the rotating shaft, which plays the effect of rotatably installing the rotating shaft, and the bottom end of the rotating shaft is fixedly connected with a reciprocating screw 503, and a reciprocating wire sleeve 505 is threadedly sleeved on the reciprocating screw 503, and a lifting sleeve 506 with an opening at the bottom is fixedly sleeved on the reciprocating wire sleeve 505, and a circular shaft 5 is rotatably sleeved in the lifting sleeve 506, wherein two second bearings are fixedly sleeved inside the lifting sleeve 506 and on the outer side of the circular shaft 5, which plays the effect of rotatably installing the circular shaft 5, and the bottom of the circular shaft 5 movably passes through the material passing box 2 and extends to In the grouting pipe 201, a circular movable through hole is provided on the top of the material passing box 2 for the circular shaft 5 to movably pass through, a spiral conveying blade 507 movably sleeved in the grouting pipe 201 is fixedly sleeved on the outer side of the circular shaft 5, an avoidance hole 501 adapted to the reciprocating screw 503 is provided on the top of the circular shaft 5, a square rotating rod 502 is fixedly connected to the inner wall of the bottom of the avoidance hole 501, a square sliding hole 504 slidably sleeved on the outer side of the square rotating rod 502 is provided at the bottom end of the reciprocating screw 503, two vertical guide rods 509 are fixedly connected between the bottom of the support plate 403 and the top of the material passing box 2, an outer edge is integrally provided on the outer top of the lifting sleeve 506 and is slidably sleeved on the two vertical guide rods 509, and both sides of the circular shaft 5 are fixedly connected to stirring knife rods 508 located in the material passing box 2;

[0045] The rotating shaft, reciprocating screw 503, square sliding hole 504, avoidance hole 501, round shaft 5, spiral conveying blade 507, reciprocating thread sleeve 505, lifting sleeve 506 and vertical guide rod 509 are matched with each other, and the driving motor 401 drives the reciprocating screw 503 to rotate through the rotating shaft, and the reciprocating screw 503 fits with the square rotating rod 502 through the square sliding hole 504 and drives the square rotating rod 502 to rotate as a whole, and the square rotating rod 502 drives the round shaft 5 to rotate, and the round shaft 5 drives the spiral conveying blade 507 to rotate, so as to rotate and convey the slurry entering the grouting pipe 201 to form a spinning effect, and perform preliminary pressure application work; wherein the reciprocating screw 503 is driven by the rotating shaft 503, and the reciprocating screw 503 is driven by the rotating shaft 503, and the reciprocating screw 503 is driven by the rotating shaft 504 ...7, and the slurry entering the grouting pipe 201 is rotated and conveyed to squeeze, so as to form a spinning effect, and perform preliminary pressure application work; When the lead screw 503 rotates, it also drives the reciprocating wire sleeve 505 to move up and down reciprocatingly, and the reciprocating wire sleeve 505 drives the lifting sleeve 506 to move up and down reciprocatingly, and the lifting sleeve 506 drives the round shaft 5 to move up and down reciprocatingly, and the round shaft 5 drives the square rotating rod 502 to slide vertically back and forth in the square sliding hole 504. At the same time, the round shaft 5 drives the spiral conveying blade 507 to move up and down reciprocatingly, and the spiral conveying blade 507 that moves up and down reciprocatingly is used to further achieve the effect of circulating downward squeezing of the slurry, and perform secondary pressurization, and utilize rotation downward pressure and integrated cyclic vertical pushing to achieve a continuous double pressure effect, thereby improving the stability and compactness of grouting and reducing the phenomenon of void in the lower part caused by jamming after slurry injection.

[0046] Furthermore, the leverage-type direction-changing motion component includes two first rectangular rods 6, and the adjacent sides of the two first rectangular rods 6 are fixedly connected to the outer side of the outer edge of the lifting sleeve 506, and the repelling sides of the two first rectangular rods 6 are embedded and fixed with a first rack 601, and the inner walls of both sides of the rectangular sliding sleeve 7 are fixedly connected with a connecting seat 604, and the adjacent sides of the two connecting seats 604 are respectively movably inserted into the rectangular box 4 through the corresponding rectangular through holes 404, and the adjacent sides of the two connecting seats 604 are fixedly connected with a second rectangular rod 602, and the adjacent sides of the two second rectangular rods 602 are embedded and fixed with a second rack 603, and the first rack 601 and the corresponding second rack 603 are meshed with a gear 605 rotatably installed between the front and rear inner walls of the rectangular box 4, and the support plate 403 is slidably sleeved on the two first rectangular rods 6 and the two second rectangular rods 602, wherein the support plate 403 Four rectangular guide holes are provided on the top, and the first rectangular rod 602 and the second rectangular rod 602 are respectively slidably mounted on the inner walls of the corresponding rectangular guide holes, which play a role in guiding the vertical sliding of the first rectangular rod 6 and the second rectangular rod 602; the first rectangular rod 6, the first rack 601, the connecting seat 604, the second rectangular rod 602, the second rack 603 and the gear 605 are coordinated, and the reciprocating up and down movement force of the lifting sleeve 506 is utilized to drive the two first rectangular rods 6 to move reciprocally up and down, the two first rectangular rods 6 drive the two gears 605 to rotate reciprocatingly through the two first racks 601, the two gears 605 drive the second rectangular rod 602 to change direction through the two second racks 603, and move reciprocatingly up and down, and the two second rectangular rods 602 drive the rectangular sleeve 7 to move reciprocatingly up and down through the two connecting seats 604, thereby achieving the effect of driving the rectangular sleeve 7 to move reciprocatingly up and down by leveraging the force.

[0047] Furthermore, the integrated circulating tamping assembly includes two symmetrically arranged L-shaped connecting rods 701, and the adjacent ends of the two L-shaped connecting rods 701 are respectively fixedly connected to the two sides of the rectangular sliding sleeve 7, and the two sides of the material passing box 2 are fixedly connected with rectangular guide sleeves 702, and the rectangular guide sleeves 702 are slidingly sleeved on the corresponding L-shaped connecting rods 701. The bottom ends of the L-shaped connecting rods 701 are fixedly connected with connecting rods 703, and the bottom ends of the two connecting rods 703 are fixedly connected with the same vertical guide sleeve 704 slidingly sleeved on the outside of the grouting pipe 201. The bottom of the vertical guide sleeve 704 is annular and fixedly connected with multiple tamping rods 705 at equal intervals. A tamping rod 705 is arranged around the grouting pipe 201 and protrudes from the bottom end of the grouting pipe 201; the L-shaped connecting rod 701, the rectangular guide sleeve 702, the connecting rod 703, the vertical guide sleeve 704 and the tamping rod 705 cooperate with each other, and the rectangular sliding sleeve 7 is moved back and forth to achieve the reciprocating up and down movement of the vertical guide sleeve 704 through the two L-shaped connecting rods 701 and the two connecting rods 703 in turn, and the vertical guide sleeve 704 drives multiple tamping rods 705 to move back and forth to further tamping the discharged slurry, thereby reducing the phenomenon of the slurry being stuck at the injection port position, and the tamping is used to further improve the compactness of the slurry.

[0048] This embodiment also proposes a method for using a hole grouting device in a karst area, comprising the following steps:

[0049] S1: The lifting plate 3 is driven downward by the multi-stage electric telescopic rod 302 to drive the grouting pipe 201 to be inserted into the grouting borehole connected to the karst area. The lifting plate 3 drives the four positioning rods 301 to be inserted into the ground for positioning and stabilizing support, so as to achieve the effect of positioning and stabilizing support when the grouting pipe 201 is driven to be inserted into the grouting borehole. The external slurry supply equipment supplies slurry into the material box 2 through the L-shaped feed pipe 202. The slurry is injected into the grouting borehole and the holes in the karst area through the grouting pipe 201. The four positioning rods 301 are inserted into the ground for positioning and stabilizing support, which provides stability for the grouting work and prevents the grouting pipe 201 from being displaced and tipped over due to vibration during grouting.

[0050] S2: The driving motor 401 drives the reciprocating screw 503 to rotate through the rotating shaft. The reciprocating screw 503 fits with the square rotating rod 502 through the square sliding hole 504 and drives the square rotating rod 502 to rotate integrally. The square rotating rod 502 drives the round shaft 5 to rotate. The round shaft 5 drives the spiral conveying blade 507 to rotate, and the slurry entering the grouting pipe 201 is rotated, conveyed and squeezed to form a spinning effect, and preliminary pressure is applied. The round shaft also drives the stirring knife rod 508 to move up and down and rotate to rotate and break the agglomerated slurry, so as to prevent the agglomerated slurry from causing the grouting work to get stuck, and further improve the grouting stability.

[0051] S3: When the reciprocating screw 503 described in S2 rotates, it also drives the reciprocating wire sleeve 505 to move up and down reciprocatingly, and the reciprocating wire sleeve 505 drives the lifting sleeve 506 to move up and down reciprocatingly, and the lifting sleeve 506 drives the round shaft 5 to move up and down reciprocatingly, and the round shaft 5 drives the square rotating rod 502 to slide vertically reciprocatingly in the square sliding hole 504, and at the same time, the round shaft 5 drives the spiral conveying blade 507 to move up and down reciprocatingly, and the spiral conveying blade 507 that moves up and down reciprocatingly is used to further achieve the effect of cyclically squeezing the slurry downward, and perform secondary pressurization, and use rotation to press down and integrally cyclically push vertically to achieve a continuous double-pressure effect, provide a stable grouting compaction effect, improve the grouting stability and compactness, and reduce the phenomenon of lower void caused by jamming after slurry injection;

[0052] S4: When the lifting sleeve 506 described in S3 moves up and down reciprocatingly, it drives the two first rectangular rods 6 to move up and down reciprocatingly. The two first rectangular rods 6 drive the two gears 605 to rotate reciprocatingly through the two first racks 601. The two gears 605 drive the second rectangular rods 602 to change direction through the two second racks 603 to move up and down reciprocatingly. The two second rectangular rods 602 drive the rectangular sliding sleeve 7 to move up and down reciprocatingly through the two connecting seats 604, so as to achieve the effect of driving the rectangular sliding sleeve 7 to move up and down reciprocatingly by leveraging the force.

[0053] S5: When the rectangular sliding sleeve 7 described in S4 moves back and forth, it drives the vertical guide sleeve 704 to move back and forth through two L-shaped connecting rods 701 and two connecting rods 703 in turn. The vertical guide sleeve 704 drives multiple tamping rods 705 to move back and forth to tamping the discharged slurry, thereby reducing the phenomenon of the slurry being stuck at the injection port. The tamping is used to further improve the compactness of the slurry. The driving motor 401 is used to realize the functions of vertical and rotary dual pressure, tamping and crushing in a single drive. The multi-functional auxiliary pressurization and compaction in the grouting process are realized while reducing energy consumption. There is no need to set up multiple driving equipment separately to run at the same time to increase energy consumption. The grouting process has a good energy-saving effect.

[0054] The present embodiment facilitates driving the grouting pipe 201 to be inserted into the grouting borehole and to perform positioning, plugging, stabilizing and stopping support work on the ground as a whole, thereby reducing the risk of displacement and tipping of the grouting pipe 201 due to vibration during grouting, providing stability for the grouting work, and being able to spin, circulate vertical pressure and tamp vibration of the slurry by a single drive during grouting, and utilizing the continuous double pressure formed by spinning and circulate vertical pressure in combination with tamp vibration to provide a stable grouting compacting effect, improve the grouting stability and compactness, and reduce the phenomenon of void in the lower part caused by jamming after slurry injection, and utilizing a single drive as a whole to realize spinning and vertical double pressure, tamp vibration and breaking up of agglomerated slurry, without the need to separately set up multiple drive devices to operate simultaneously to increase energy consumption, and having a good energy-saving application effect.

[0055] Embodiment 2

[0056] like Figures 5 to 9As shown, this embodiment is based on the embodiment one, and its difference from the embodiment one is that: the bottom of the lifting plate 3 is also equipped with a hole blocking self-stop control alarm component for automatically controlling the drive motor 401 to shut down and alarm after the grouting is completed. The hole blocking self-stop control alarm component is used to provide a way for the gas in the grouting borehole to be discharged during grouting, and automatically alarm to remind personnel and stop the double-pressure conveying and tamping work when the slurry is squeezed after the grouting is completed; the hole blocking self-stop control alarm component includes a fixed installation on the front side of the battery 102 and connected to the multi-stage electric The telescopic rod 302 and the driving motor 401 are electrically connected to the PLC controller 8, and the top of the PLC controller 8 is fixed and electrically connected to the sound and light alarm 801. The bottom sides of the lifting plate 3 are fixedly connected to the outer tube 802, and the inner rod 803 is slidably sleeved in the outer tube 802, wherein the two inner rods 803 are provided with a limiting groove on one side thereof, and the limiting blocks are fixedly connected on the inner walls on the side thereof, and the limiting blocks are slidably connected to the corresponding limiting grooves, so as to limit and prevent the inner rods 803 from falling off, and the lifting plate 3 The bottom of the two inner rods 803 is fixedly connected with two pressure sensors 805 located in the corresponding outer tubes 802, and a spring 804 is fixedly connected between the bottom of the pressure sensor 805 and the top of the corresponding inner rod 803. The two pressure sensors 805 are electrically connected to the PLC controller 8, and the PLC controller 8, the sound and light alarm 801 and the pressure sensor 805 are electrically connected to the battery 102. The bottom ends of the two inner rods 803 are fixedly connected with the same baffle plate 806, which is slidably sleeved between the grouting pipe 201 and the multi-hole. The outside of the tamping rod 705, wherein the top of the hole-blocking plate 806 is provided with a plurality of circular guide holes which are respectively slidably fitted with the corresponding outsides of the tamping rod 705, and the top of the hole-blocking plate 806 is provided with a central hole which is slidably fitted with the outside of the grouting pipe 201, which plays the effect of guiding the vertical sliding of the hole-blocking plate 806, and the outside of the hole-blocking plate 806 is provided with a plurality of exhaust holes 807 with openings at the bottom in a circular shape with equal intervals, and the hole-blocking plate 806 is used for shielding the grouting drilled holes connecting the holes in the karst area and for exhausting gas by using the exhaust holes 807 during grouting.

[0057] This embodiment can automatically stop the double-pressure feeding and ramming after the grouting is completed, automatically reset and alarm to remind personnel to take corresponding measures, thereby reducing the risk of large-scale slurry overflow and waste due to negligence in not stopping in time after grouting, further improving the degree of automation and convenience of use.

[0058] This embodiment also proposes a method for using a hole grouting device in a karst area, which is different from the first embodiment in that, on the basis of the first embodiment, it also includes the following steps:

[0059] S6: When the lifting plate 3 described in S1 moves downward, it also drives the hole blocking plate 806 downward to cover the top of the grouting borehole through the outer tube 802, the pressure sensor 805, the spring 804 and the inner rod 803 in sequence to perform the hole blocking work. The multiple exhaust holes 807 are used to discharge the gas in the grouting borehole and the hole during grouting. The PLC controller 8 is used to preset the pressure value for controlling the sound and light alarm 801 to turn on, the multi-stage electric telescopic rod 302 to start forward and the drive motor 401 to turn off. After the grouting is completed, since the slurry has a certain entity and is greater than the squeezing force of the gas, it cannot be completely moved out from the exhaust hole 807. After the slurry is filled, it will press the hole blocking plate 806 upward. Under the top pressure, the hole blocking plate 806 moves upward and drives the two inner rods 803 to compress the two springs 804 upward, so that the squeezing force of the spring 804 on the pressure sensor 805 increases, and the pressure The force sensor 805 detects the extrusion pressure and transmits it to the PLC controller 8. When the pressure value exceeds the preset value, the PLC controller 8 controls the sound and light alarm 801 to turn on, the multi-stage electric telescopic rod 302 to start forward and the drive motor 401 to turn off, stop the double-pressure feeding work, and alarm to remind personnel to stop feeding into the material box 2. The positive start of the multi-stage electric telescopic rod 302 drives the lifting plate 3 to rise, so as to automatically drive the grouting pipe 201 to move out and drive the positioning rod 301 to separate upward from the ground and release the stable stop state, so as to achieve the effect of automatically stopping the double-pressure feeding and tamping and automatically resetting and alarming to remind personnel after the grouting is completed, reducing the risk of large amount of slurry overflow and waste due to negligence in not stopping in time after grouting, further improving the degree of automation in use, and subsequent personnel can easily fill the small space at the top of the grouting borehole caused by the withdrawal of the grouting pipe 201.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hole grouting device in a karst area, comprising a circular bottom plate (1) and four universal wheels (101) rotatably mounted on the bottom of the circular bottom plate (1) in a rectangular shape, characterized in that: A material passing box (2) is arranged above the circular bottom plate (1); an L-shaped material feeding pipe (202) for connecting to an external slurry supply device is connected and fixed to the top of the front side of the material passing box (2); the bottom of the material passing box (2) is arranged in a conical structure and is connected and fixed to a grouting pipe (201) located in the circular bottom plate (1); an integrated lifting and stabilizing support component for driving the grouting pipe (201) to be raised and lowered and inserted into the ground to be stable is installed on the top of the circular bottom plate (1); A rectangular box (4) with an opening at the bottom is fixedly connected to the top of the material passing box (2), a support plate (403) is fixedly connected between the inner walls on both sides of the rectangular box (4), rectangular through holes (404) are provided on the inner walls on both sides of the rectangular box (4), a reciprocating lifting rotary drive feeding double pressure assembly for reciprocating vertical material pressing and rotary feeding is rotatably installed at the bottom of the support plate (403), a driving motor (401) whose output shaft is fixedly connected to the reciprocating lifting rotary drive feeding double pressure assembly is fixedly installed on the top inner wall of the rectangular box (4), a rectangular sleeve (7) is slidingly sleeved on the outer side of the rectangular box (4), and a lever-type direction-changing motion assembly for driving the rectangular sleeve (7) to reciprocate and rise and fall is fixedly connected to both sides of the reciprocating lifting rotary drive feeding double pressure assembly, and an integrated circulating pounding assembly that surrounds the grouting pipe (201) and is used for reciprocating pounding is installed on both sides of the rectangular sleeve (7).

2. A grouting device for karst areas according to claim 1, characterized in that: The integrated lifting and stabilizing support assembly comprises a lifting plate (3) fixedly sleeved on the outside of the grouting pipe (201); multi-stage electric telescopic rods (302) whose protruding ends are fixedly connected to the bottom of the lifting plate (3) are fixedly installed on both sides of the top of the circular bottom plate (1); a synchronous control switch (303) is fixedly installed on the front side of the multi-stage electric telescopic rod (302) located on the left side; the two multi-stage electric telescopic rods (302) are electrically connected to the synchronous control switch (303); two positioning rods (301) with conical structures at the bottom ends are fixedly connected to both sides of the bottom of the lifting plate (3); and four vertical guide through holes are opened on the top of the circular bottom plate (1) and are respectively slidably sleeved on the outer sides of the corresponding positioning rods (301).

3. A grouting device for karst areas according to claim 1, characterized in that: The reciprocating lifting type rotary drive feeding double pressure assembly comprises a rotating shaft rotatably mounted on the bottom of the support plate (403) and fixedly connected to the output shaft of the driving motor (401); the bottom end of the rotating shaft is fixedly connected to a reciprocating screw (503); a reciprocating thread sleeve (505) is threadedly sleeved on the reciprocating screw (503); a lifting sleeve (506) with an opening at the bottom is fixedly sleeved on the reciprocating thread sleeve (505); a circular shaft (5) is rotatably sleeved in the lifting sleeve (506); the bottom of the circular shaft (5) movably passes through the material box (2) and extends into the grouting pipe (201); the outer fixed sleeve of the circular shaft (5) is provided with a spiral conveying blade (506) movably sleeved in the grouting pipe (201) 507), the top of the circular shaft (5) is provided with an avoidance hole (501) adapted to the reciprocating screw (503), a square rotating rod (502) is fixedly connected to the inner wall of the bottom of the avoidance hole (501), the bottom of the reciprocating screw (503) is provided with a square sliding hole (504) which is slidably sleeved on the outer side of the square rotating rod (502), two vertical guide rods (509) are fixedly connected between the bottom of the support plate (403) and the top of the material passing box (2), the outer top of the lifting sleeve (506) is integrally provided with an outer edge which is slidably sleeved on the two vertical guide rods (509), and both sides of the circular shaft (5) are fixedly connected with stirring knife rods (508) located in the material passing box (2).

4. A grouting device for karst areas according to claim 3, characterized in that: The lever-assisted direction-changing motion assembly comprises two first rectangular rods (6), the adjacent sides of the two first rectangular rods (6) are fixedly connected to the outer side of the outer edge of the lifting sleeve (506), the repelling sides of the two first rectangular rods (6) are embedded and fixed with first racks (601), the inner walls of both sides of the rectangular sliding sleeve (7) are fixedly connected with connecting seats (604), and the adjacent sides of the two connecting seats (604) are respectively movably inserted into the rectangular box through corresponding rectangular through holes (404). (4), the adjacent sides of the two connecting seats (604) are fixedly connected with the second rectangular rods (602), the adjacent sides of the two second rectangular rods (602) are embedded and fixed with the second racks (603), the first racks (601) and the corresponding second racks (603) are meshed with a gear (605) rotatably installed between the front and rear inner walls of the rectangular box (4), and the support plate (403) is slidably sleeved on the two first rectangular rods (6) and the two second rectangular rods (602).

5. The hole grouting device for karst areas according to claim 1, characterized in that: The integrated circulating tamping assembly comprises two symmetrically arranged L-shaped connecting rods (701), the adjacent ends of the two L-shaped connecting rods (701) are respectively fixedly connected to the two sides of the rectangular sliding sleeve (7), the two sides of the material passing box (2) are fixedly connected with rectangular guide sleeves (702), the rectangular guide sleeves (702) are slidingly sleeved on the corresponding L-shaped connecting rods (701), the bottom ends of the L-shaped connecting rods (701) are fixedly connected with connecting rods (703), the bottom ends of the two connecting rods (703) are fixedly connected with the same vertical guide sleeve (704) slidingly sleeved on the outside of the grouting pipe (201), the bottom of the vertical guide sleeve (704) is annularly fixedly connected with a plurality of tamping rods (705) at equal intervals, the plurality of tamping rods (705) are arranged to surround the grouting pipe (201) and protrude from the bottom end of the grouting pipe (201).

6. A grouting device for karst areas according to claim 2, characterized in that: A storage battery (102) is fixedly installed on the left side of the top of the circular bottom plate (1), and the two multi-stage electric telescopic rods (302) and the driving motor (401) are electrically connected to the storage battery (102).

7. The hole grouting device for karst areas according to claim 1, characterized in that: A rectangular telescopic protective rubber sleeve (706) is fixedly connected between the bottom of the rectangular sliding sleeve (7) and the top of the material passing box (2), and the rectangular box (4) is located in the rectangular telescopic protective rubber sleeve (706).

8. The hole grouting device for karst areas according to claim 1, characterized in that: The tops of the four sides of the rectangular box (4) are each provided with a plurality of ventilation holes, and filter screens (402) are fixedly installed in the ventilation holes.

9. The hole grouting device for karst areas according to claim 6, characterized in that: The bottom of the lifting plate (3) is also equipped with a hole blocking automatic stop control alarm component for automatically controlling the drive motor (401) to shut down and alarm after grouting is completed. The hole blocking automatic stop control alarm component includes a PLC controller (8) fixedly installed on the front side of the battery (102) and electrically connected to the multi-stage electric telescopic rod (302) and the drive motor (401). The top of the PLC controller (8) is fixedly connected to and electrically connected with an audible and visual alarm (801). Both sides of the bottom of the lifting plate (3) are fixedly connected with an outer tube (802), and an inner rod (803) is provided in a sliding sleeve inside the outer tube (802). The bottom of the lifting plate (3) is fixedly connected with two pressure sensors (805) respectively located in the corresponding outer tubes (802). The pressure sensors (80 A spring (804) is fixedly connected between the bottom of the inner rod (5) and the top of the corresponding inner rod (803), the two pressure sensors (805) are electrically connected to the PLC controller (8), the PLC controller (8), the sound and light alarm (801) and the pressure sensor (805) are electrically connected to the battery (102), the bottom ends of the two inner rods (803) are fixedly connected to the same hole blocking plate (806), the hole blocking plate (806) is slidably sleeved on the outside of the grouting pipe (201) and the plurality of tamping rods (705), the outer side of the hole blocking plate (806) is provided with a plurality of exhaust holes (807) with openings at the bottom at equal intervals in a circular shape, the hole blocking plate (806) is used to block the grouting drill holes connected to the holes in the karst area and to exhaust gas using the exhaust holes (807) during grouting.

10. A method for using a hole grouting device in a karst area according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The multi-stage electric telescopic rod (302) drives the lifting plate (3) to move downward, driving the grouting pipe (201) to be inserted into the grouting borehole connected to the karst area, and driving four positioning rods (301) to be inserted into the ground to perform positioning, stabilizing and preventing displacement. The external grouting equipment supplies grout into the material box (2) and injects it into the grouting borehole and the holes in the karst area through the grouting pipe (201); S2: The driving motor (401) drives the reciprocating screw (503) to rotate, and the reciprocating screw (503) drives the spiral conveying blade (507) to rotate through the square rotating rod (502) and the circular shaft (5) to form a preliminary spinning pressure for the slurry rotation conveying, and drives the stirring blade (508) to rotate and break up the agglomerated slurry; S3: When the reciprocating screw (503) described in S2 rotates, it also drives the reciprocating wire sleeve (505) to move up and down reciprocatingly. The reciprocating wire sleeve (505) drives the spiral conveying blade (507) to move up and down reciprocatingly through the lifting sleeve (506) and the circular shaft (5), and squeezes the slurry downward in a cycle to perform secondary pressurization; S4: When the lifting sleeve (506) described in S3 moves up and down reciprocatingly, it drives the two first rectangular rods (6) to move up and down reciprocatingly, so as to further drive the two second rectangular rods (602) and the rectangular sliding sleeve (7) to move up and down reciprocatingly; S5: When the rectangular sliding sleeve (7) described in S4 moves up and down reciprocatingly, it drives a plurality of tamping rods (705) through two L-shaped connecting rods (701), two connecting rods (703) and a vertical guide sleeve (704) to further tamping and compact the discharged slurry; S6: When the lifting plate (3) described in S1 moves downward, it also drives the hole blocking plate (806) to cover the top of the grouting borehole through the outer tube (802), the pressure sensor (805), the spring (804) and the inner rod (803) in sequence. The multiple exhaust holes (807) are used to discharge the gas in the grouting borehole and the hole during grouting. After the slurry is filled, it presses the hole blocking plate (806) upward to drive the two inner rods (803) to compress the two springs (804), thereby increasing the squeezing force on the pressure sensor (805). When the squeezing force detected by the pressure sensor (805) exceeds the preset value, the PLC controller (8) automatically controls the sound and light alarm (801) to start, the multi-stage electric telescopic rod (302) to start forward, and the drive motor (401) to turn off.

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