Sleeve valve pipe automatic positioning, pipe feeding and grouting device used under different construction conditions and construction method of sleeve valve pipe automatic positioning, pipe feeding and grouting device

Abstract

The invention discloses an automatic positioning, pipe feeding and grouting device for a sleeve valve pipe under different construction conditions and a construction method of the automatic positioning, pipe feeding and grouting device, relates to the technical field of rock stratum grouting reinforcement, and aims to solve the problems that the sleeve valve pipe needs to frequently adjust the position of a double-plug type grouting plug, depends on manual vision or simple mechanical marking and positioning of a grouting opening and consumes long time. A grouting pipe needs to be manually pushed section by section, the operation is complex, and slurry fluid channeling or a blind area is caused by dislocation of a grouting opening due to distance control deviation. The invention provides an automatic positioning, pipe feeding and grouting device for a sleeve valve pipe under different construction conditions and a construction method of the automatic positioning, pipe feeding and grouting device. The automatic positioning, pipe feeding and grouting device comprises double storage tanks and a grouting pipe which are sequentially connected, and the sleeve valve pipe is arranged on the outer side of the near end of the grouting pipe in a sleeving mode; a pipe body of the grouting pipe penetrates through the pipe conveying machine, the distance of the near end of the grouting pipe is adjusted through the pipe conveying machine, and a controller is arranged on the pipe conveying machine. And the grouting accuracy and the grouting efficiency of the sleeve valve pipe can be obviously improved.

Description

Technical Field

[0001] This invention relates to the field of rock grouting reinforcement technology, specifically to an automatic positioning and delivery grouting device for sleeve valve pipes under different construction conditions and its construction method. Background Technology

[0002] Sleeve valve grouting technology, with its core advantage of "segmented and controllable grouting," is gradually becoming a key process for reinforcing complex strata and sealing leaks. Its core principle involves pre-embedding sleeve valves and using double-plug grouting plugs to isolate grouting in the target section, isolating non-target areas. This avoids disorderly grout diffusion and allows for precise control of grouting pressure and range, offering strong controllability. This technology has significant advantages in urban subway tunnel projects where strict control of the grouting range is required to reduce ground disturbance due to proximity to existing buildings or underground pipelines, and in mining tunnels where deep-hole precision reinforcement is needed for fault fracture zones.

[0003] However, its segmented grouting characteristic presents challenges such as the need for frequent adjustments to the position of the double-plug grouting plug. Existing technologies rely on manual visual inspection or simple mechanical marking to position the grouting port, which is time-consuming, especially with a significant decrease in efficiency during deep hole grouting. The grouting pipe needs to be manually pushed segment by segment, which is complex and prone to misalignment of the grouting port due to deviations in distance control, leading to grout cross-flow or blind spots.

[0004] Furthermore, the fixed grouting pressure and grout type used in grouting construction cannot meet the needs of different strata such as silty clay and breccia.

[0005] Traditional pressure sensors only display real-time values ​​and cannot be linked to the pipe delivery system to automatically determine the grouting completion point. Currently, there is no device or matching sleeve valve pipe for precise grouting construction that can automatically locate and identify the grouting port while simultaneously handling pipe delivery and exit. Summary of the Invention

[0006] To address the aforementioned problems, this invention aims to provide an automatic positioning and grouting device for sleeve valve pipes under different construction conditions, along with its construction method. This device solves the problems of complex operation, low efficiency, and poor grouting accuracy in sleeve valve pipe grouting. It also reduces the workload of workers to a certain extent, accelerates the grouting speed, and enables multiple grouting and replenishment within the grouting liquid's setting time, significantly improving the accuracy and efficiency of sleeve valve pipe grouting.

[0007] The main idea of ​​the technical solution adopted in this invention is as follows: A double-plug grouting plug is used, combining the grouting port positioning and identification device with the pipe delivery operation. Electromagnetic positioning and identification technology is used to accurately identify the grouting port position. A pipe delivery machine is added to control the delivery of the grouting pipe. A stratum identification module is also added, along with a pressure sensor, to adjust the grouting pressure and grouting material according to different stratum conditions, while simultaneously determining the completion status of grouting. An adjustable-angle pipe delivery machine base is designed, and the arrangement method of the casing material is changed to enable construction on the tunnel face. During the segmented grouting pipe delivery movement, when the positioning and identification device identifies that the double-plug grouting plug is aligned with the grouting port of the sleeve valve pipe, it triggers the braking mechanism of the pipe delivery device to stop the pipe delivery. The stratum identification module identifies the stratum conditions, determines the appropriate grouting pressure and grouting material for grouting, and proceeds to the next segment after grouting is completed. The pressure sensor determines whether grouting is complete, enabling rapid grouting of a single hole.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: An automatic positioning and delivery grouting device for sleeve valve pipes under different construction conditions and its construction method are disclosed, comprising: a double storage tank and a grouting pipe connected in sequence, with a sleeve valve pipe sleeved on the outside of the near end of the grouting pipe; the pipe body of the grouting pipe passes through a delivery machine, and the distance of the near end of the grouting pipe is adjusted by the delivery machine.

[0009] Furthermore, the above technical solution includes: a sensor and a miniature ground-penetrating radar installed on the grouting pipe, which can identify electromagnetic beacons installed on the sleeve valve pipe.

[0010] Furthermore, based on the above technical solution, the pipe feeding machine includes a base, and the base is provided with: The conveying assembly, located inside the base, is used to drive the conveying of the grouting pipe; The clamping assembly is mounted on the base and symmetrically arranged on both sides of the conveying assembly; The overpressure protection component, located inside the clamping assembly, is used for fault protection when the grouting pipe is excessively squeezed.

[0011] Furthermore, through the above technical solution: the conveying assembly includes a conveyor belt 1 disposed in the base, the conveyor belt 1 being disposed along the axial direction of the sleeve valve tube; The upper surface of the base is provided with an arc-shaped groove, and the grouting pipe can come into contact with the conveyor belt below when placed in the arc-shaped groove.

[0012] Furthermore, through the above technical solution: the clamping assembly includes a clamping plate, and multiple sets of rotating wheels and conveying wheels are respectively arranged on the upper and lower sides of the clamping plate. The rotating wheels and conveying wheels are connected by a conveying shaft located inside the clamping plate. A motor is provided on one side of the clamping plate. A rotating ring is provided at the output end of the motor. A conveyor belt is fitted on the rotating ring and the rotating wheel.

[0013] Furthermore, the clamping assembly further includes a hydraulic pipe, which includes a container tube filled with liquid. A drive rod and a moving rod are slidably connected to both ends of the container tube. The drive rod is located at the inlet end of the sleeve valve tube, and the moving rod is connected to the clamping plate through a connecting rod.

[0014] Furthermore, through the above technical solution: the overvoltage protection component includes a central shaft located inside the transmission shaft, the central shaft being slidably connected to the transmission shaft, and multiple sliders being horizontally arranged inside the transmission wheel, with the central shaft located between the sliders; The rotating wheel and the transmission shaft are connected by magnetic blocks. Four magnetic blocks are arranged along the circumference of the transmission shaft. The magnetic blocks are attracted to the side wall of the rotating wheel. A quadrangular prism is arranged at the upper end of the central shaft. The outer surface of the quadrangular prism is provided with a magnetic layer opposite to that of the magnetic blocks.

[0015] Further, based on the above technical solution: a speed controller is set on one side of the motor three, and a block to be tested is set on the conveyor belt two; an electric telescopic rod is set on each of the clamps to push the opposite clamps.

[0016] A construction method for automatic positioning and grouting of sleeve valve pipes under different construction conditions, using an automatic positioning and grouting device for sleeve valve pipes under different construction conditions as described in any of the above-mentioned methods, is as follows: Step 1: Drill holes and install sleeve valve tubes; Step 2: Equipment Setup; Step 3: Grouting through pipe insertion; The grouting pipe is placed on the arc-shaped groove. Under the action of the conveyor belt, the grouting pipe moves towards the clamping plate and pushes the drive rod, causing the drive rods on both sides to move away from each other. The drive rod squeezes the liquid in the hydraulic pipe, which in turn shortens the overlapping length of the hydraulic pipe of the moving rod. The moving rod drives the clamping plate to move away from the opposite clamping plate. The third motor is started, which drives the rotating ring to rotate, which in turn drives the second conveyor belt to rotate. The second conveyor belt drives the rotating wheel to rotate, which in turn drives the rotating shaft to rotate, ultimately driving the bottom conveyor wheel to rotate. The two conveyor wheels on both sides rotate in opposite directions, which can push the grouting pipe between them forward. During the movement of the grouting pipe, the sensor inside the double-plug grouting plug continuously scans the electromagnetic beacon signal. When the signal strength reaches the threshold, the controller controls the pipe feeder to stop feeding the pipe and locks the pipe feeder. Step 4: Segmented grouting; Step 5: Global grouting.

[0017] The beneficial effects of this invention are: First, the present invention uses a grouting port positioning and identification device, which improves the accuracy of the grouting pipe position, avoids the instability of manual pipe delivery, and prevents grouting port misalignment, grouting fluid crossflow, and injection blind spots.

[0018] Secondly, the present invention can adjust the grouting pressure and grouting material ratio according to different geological conditions, thereby improving the grouting quality.

[0019] Third, this invention enables grouting construction at the tunnel face, adapting to various terrain and geological conditions.

[0020] Fourth, the pipe delivery machine can be configured as a horizontal pipe delivery machine or a vertical pipe delivery machine. The horizontal pipe delivery machine is used for tunnel face construction, and the vertical pipe delivery machine is used for surface construction. The pipe delivery machine, through a conveying assembly and a clamping assembly, assists in the uniform and stable delivery of the grouting pipe. The clamping assembly can also automatically adjust the spacing according to the diameter of the grouting pipe, and does not require manual operation, thus improving work efficiency. Furthermore, to prevent damage to the grouting pipe caused by excessive compression of the conveyor wheel due to malfunction, an overpressure protection assembly is installed. When the pressure of the conveyor wheel on the grouting pipe is too high, the grouting pipe presses inward against the conveyor wheel, which in turn presses the slider inside the conveyor wheel. The slider pushes the central shaft upward, and the central shaft pulls the magnetic block out of the rotating wheel. The conveyor belt only drives the rotating wheel to rotate, and the conveyor shaft and conveyor wheel stop rotating. At this time, because the load on motor three is reduced, the rotation speed of conveyor belt two will increase. The speed controller detects that the speed of the block to be tested has increased, and activates the electric telescopic rod to extend, pushing the two clamping plates to both ends, and the conveyor wheel will no longer compress the grouting pipe.

[0021] Fifth, this invention combines positioning equipment, pipe delivery machine, geological identification module, pressure sensor and electronic rotary valve, which greatly reduces manual operation steps, makes construction more convenient, and grouting more precise. It enables multiple grouting and replenishment within the grouting liquid setting time, significantly improving the accuracy and efficiency of sleeve valve pipe grouting. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the double-plug grouting plug positioning and delivery grouting device for sleeve valve pipe grouting in tunnels, as per the present invention. The diagram shows the horizontal delivery of the pipe. Figure 2 This is a structural diagram of the double-plug grouting plug positioning and delivery grouting device for ground sleeve valve pipe grouting according to the present invention. The diagram shows the vertical delivery pipe. Figure 3 This is a schematic diagram of the pre-embedded electromagnetic beacon of the present invention; Figure 4 This is a three-dimensional structural diagram of the pipe feeder of the present invention in its initial state; Figure 5 This is a three-dimensional structural diagram of the pipe feeder of the present invention with the fixing frame removed in its initial state; Figure 6 This is a three-dimensional structural diagram of the pipe feeder of the present invention from another angle in its initial state; Figure 7 yes Figure 6 Enlarged schematic diagram of part of the structure; Figure 8 This is a schematic cross-sectional view of the pipe feeder of the present invention in its initial state; Figure 9 This is a three-dimensional structural diagram of the pipe feeding machine clamp assembly of the present invention; Figure 10 This is a three-dimensional structural diagram of the internal initial state of the pipe feeder of the present invention; Figure 11 This is a partial cross-sectional view of the initial state of the pipe feeder of the present invention; Figure 12 yes Figure 11 Enlarged schematic diagram of part of the structure; Figure 13 yes Figure 12 Enlarged schematic diagram of part of the structure; Figure 13 yes Figure 12 Enlarged schematic diagram of part of the structure; Figure 14 yes Figure 13 3D cross-sectional diagram of the corresponding part under overvoltage protection. Figure 15 This is a three-dimensional structural diagram of the pipe feeder of the present invention in use; Figure 16 This is a cross-sectional schematic diagram of the overpressure protection section of the pipe feeder in use according to the present invention; Figure 17 yes Figure 14 Enlarged schematic diagram of part of the structure; Figure 18 This is a schematic diagram of the sleeve valve tube positioning ring of the present invention; Figure 19 This is a schematic diagram of the three-dimensional structure of the transmission shaft of the present invention; Figure 20 This is a schematic diagram of the three-dimensional structure of the shaft and the quadrangular prism in this invention; The meanings of the labels in the attached diagrams are as follows: 1. Dual storage tanks; 2. Grout delivery pipe; 3. Electronic rotary valve; 4. Pressure sensor; 5. Grouting pipe; 6. Support pulley two; 7. Support pulley three; 8. Controller; 9. Pipe delivery machine; 901. Base; 901-1. Receiving groove; 901-2. Arc groove; 902. Fixing frame; 902-1. Guide groove one; 902-2. Guide groove two; 10. Exposed section of sleeve valve pipe; 11. Tunnel cross-section; 12. 13. Sensor and miniature ground-penetrating radar; 14. Grouting port rubber sleeve; 15. Sleeve valve pipe; 16. Double-plug grouting plug; 17. Airbag plug one; 18. Airbag plug two; 19. Support rotating shaft; 20. Support pulley one; 20. Conveying assembly; 2001. Conveyor belt one; 2002. Rotating shaft; 2003. Motor one; 2004. Motor two; 21. Clamping assembly; 2101. Clamping plate; 2102. Conveyor wheel 2103. Conveyor shaft; 2104. Rotating wheel; 2105. Motor 3; 2106. Rotating ring; 2107. Conveyor belt 2; 2108. Hydraulic pipe; 2109. Receiving pipe; 2110. Drive rod; 2111. Moving rod; 2112. Connecting rod; 22. Electromagnetic induction device; 2201. Positioning plate 1; 2202. Positioning plate 2; 2203. Magnetic sheet 1; 2204. Magnetic sheet 2; 2 205. Extension plate; 2206. Electromagnetic coil; 2207. Warning light; 23. Overvoltage protection assembly; 2301. Central shaft; 2302. Slider; 2303. Magnetic block; 2304. Quadrangular prism; 2305. Electric telescopic rod; 24. Electromagnetic beacon; 25. Positioning ring; 26. Horizontal pipe feeder support; 27. Hydraulic jack; 28. Sliding groove; 29. ​​Rolling pulley; 30. Vertical pipe feeder support. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] The inventors discovered that the characteristics of segmented grouting using sleeve valve pipes present challenges, including the need for frequent adjustments to the position of the double-plug grouting plug. Existing technologies rely on manual visual inspection or simple mechanical marking to locate the grouting port, which is time-consuming, especially with a significant decrease in efficiency during deep hole grouting. The grouting pipe needs to be manually pushed segment by segment, which is complex and prone to misalignment of the grouting port due to distance control errors, leading to grout cross-flow or blind spots. Furthermore, the use of fixed grouting pressure and grout type during grouting construction cannot adapt to the needs of different strata such as silty clay and breccia. Traditional pressure sensors only display real-time values ​​and cannot automatically determine the grouting completion point in conjunction with the pipe delivery system. Currently, there is no device that can automatically locate and identify the grouting port while simultaneously handling pipe delivery and exit, nor is there a matching sleeve valve pipe precise grouting construction method.

[0025] Based on the above findings, this application proposes an automatic positioning and grouting device for sleeve valve pipe 14 under different construction conditions and its construction method. It uses a double-plug grouting plug 15 to combine the grouting port alignment with the pipe delivery operation. Electromagnetic positioning and identification technology is used to accurately identify the grouting port position. A pipe delivery machine 9 is added to control the delivery of the grouting pipe 5. A stratum identification module is also added, working with a pressure sensor 4 to adjust the grouting pressure and grout material according to different stratum conditions, while simultaneously determining the completion status of grouting. By designing an adjustable-angle base for the pipe delivery machine 9 and changing the arrangement of the casing material, it can be used for construction on the tunnel face. During the segmented grouting and pipe delivery movement, when the positioning and identification device identifies that the double-plug grouting plug 15 is aligned with the grouting port of the sleeve valve pipe 14, it triggers the braking mechanism of the pipe delivery device to stop the pipe delivery. The stratum identification module identifies the stratum conditions, determines the appropriate grouting pressure and grout material for grouting, and proceeds to the next segment after grouting is completed. The pressure sensor 4 determines whether grouting is complete, enabling rapid grouting of a single hole.

[0026] Example 1 See Figures 1-20 This application discloses an automatic positioning and grouting device for sleeve valve pipe 14 under different construction conditions and its construction method, wherein... Figure 1 and Figure 2 An automatic positioning and grouting device for tunnel face and ground sleeve valve pipe 14 is provided, which can be widely used to reinforce rock strata or form water-stop curtains in shallow buried tunnels, tunnels passing through existing buildings and soft foundations.

[0027] The automatic positioning and grouting device includes a dual storage tank 1, which comprises tank A and tank B. Tanks A and B are respectively filled with water glass single-component grout and cement single-component grout. Pipes A and B are respectively connected to tanks A and B, which are connected to the grout delivery pipe 2 through a tee connector, thereby realizing the delivery of grout.

[0028] Furthermore, in order to control the delivery of slurry, an electronic rotary valve 3 is installed between the slurry delivery pipe 2 and the tee joint. The electronic rotary valve 3 can be remotely controlled. By controlling the opening and closing of the electronic rotary valve 3, the connectivity between pipe A, pipe B and slurry delivery pipe 2 can be adjusted, thereby adjusting whether slurry is output.

[0029] The other end of the grout delivery pipe 2 is connected to the grouting pipe 5 via a tee connector. A pressure sensor 4 is connected to the other interface of the tee connector. The pressure sensor 4 is used to observe the grouting pressure in real time, and then control the start and stop of grouting through the electronic rotary valve 3.

[0030] The other end of the grouting pipe 5 enters the pipe feeder 9 and is slidably connected to the pipe feeder 9. It then exits from the other side. The end of the grouting pipe 5 is connected to a double-plug grouting plug 15, which is slidably connected up and down inside the sleeve valve pipe 14.

[0031] The grouting pipe 5 is also equipped with sensors and a miniature ground-penetrating radar 12 for precise positioning. The miniature ground-penetrating radar can scan the lithology of the strata (such as silty clay and breccia) in real time.

[0032] The double-plug grouting plug 15 includes an upper and lower airbag plug 16 and an upper airbag plug 17. The sensor and the miniature ground-penetrating radar 12 are located above the upper airbag plug 16. Before inflation, the upper and lower airbag plugs 16 and 17 of the grouting pipe 5 are small in volume and do not affect the vertical movement of the grouting pipe 5. After inflation, the volume expands, and the upper and lower airbag plugs 16 and 17 form a sealed space to prevent grout from leaking out from the upper and lower ends of the grouting pipe 5.

[0033] In addition, multiple positioning rings 25 are installed on the sleeve valve pipe 14 at certain intervals, avoiding the grouting port position, with one positioning ring 25 installed every 1m to 2m. Figure 7 The diagram on the right shows the unfolded positioning ring 25. It has a wavy shape with allowance at both ends for installation. When using cable ties or wire to secure it, the allowance can overlap, and the length of the allowance is approximately 2cm. Figure 7 The lower left corner of the left image has a gap, which is the allowance and is broken; the upper right corner is the unfolded view of the positioning ring, with the allowance on both sides; the long horizontal strip in the lower right corner is the cable tie or wire used for binding, which is equivalent to splitting the upper and lower waves and concave in the middle for binding; the eight equally sized parts in the lower right corner are the waves, split horizontally in the middle, and the parts of different lengths at both ends are the installation allowance.

[0034] During installation, the sleeve valve tube 14 is secured to the sleeve valve tube 14 by passing cable ties or wires through the gaps between the upper and lower wavy outer rings. The positioning ring 25 can fix the sleeve valve tube 14 in the position within the hole, ensuring that the sleeve material is evenly distributed.

[0035] Multiple grouting port rubber sleeves 13 are provided on the sleeve valve pipe 14, and electromagnetic beacons 24 are set at a distance of 3cm to 5cm from the grouting port rubber sleeves 13. During the movement of the grouting pipe 5, the sensor inside the grouting plug continuously scans the electromagnetic beacon 24 signal and transmits it to the controller 8.

[0036] The controller 8 is mounted on the pipe feeder 9. The controller 8 integrates a signal receiving processor and a control panel. The signal receiving processor is responsible for receiving signals from the pressure sensor 4, the inductor, the miniature ground-penetrating radar 12, and the electromagnetic beacon 24, and for sending signals to the electronic rotary valve 3. The control panel is responsible for controlling the power switch, inputting grouting pressure parameters, controlling the pipe feed speed, and controlling the forward and backward movement of the grouting pipe 5. Furthermore, the inductor and the miniature ground-penetrating radar 12 determine the location of the grouting hole by sensing the electromagnetic beacon 24.

[0037] The bottom of the pipe feeder 9 is equipped with a horizontal pipe feeder support 26 or a vertical pipe feeder support 30, which is matched and installed according to the actual pipe feeding direction. The horizontal pipe feeder support 26 is adjustable for the pipe feeding angle. One side of the horizontal pipe feeder support 26 is equipped with a support rotation shaft 18, and the other side is equipped with a hydraulic jack 27. The telescopic end of the hydraulic jack 27 drives the rolling pulley 29 to slide in the sliding groove 28 at the bottom of the pipe feeder 9, so that the side equipped with the hydraulic jack 27 can be raised or lowered, while the side equipped with the support rotation shaft 18 is stabilized by rotation.

[0038] The bottom of the horizontal pipe feeder support 26 is equipped with a support pulley 19, which is used to move the position of the pipe feeder 9.

[0039] The vertical pipe feeder support 30 is welded from a steel frame, and the pipe feeder 9 can be placed on it. The bottom of the vertical pipe feeder support 30 is equipped with support pulley 2 6 and support pulley 3 7 for movement.

[0040] The pipe feeder 9 aligns with the hole via the horizontal pipe feeder support 26 or the vertical pipe feeder support 30.

[0041] The pipe delivery machine 9 includes a base 901, on which a conveying assembly 20 is mounted for driving the conveying of the grouting pipe 5. The conveying assembly 20 includes a receiving groove 901-1 mounted on the base 901. Inside the receiving groove 901-1, along the axial direction of the grouting pipe 5, a conveyor belt 2001 is arranged. The position of the conveyor belt 2001 is defined by rotating shafts 2002 located at both ends of the receiving groove 901-1. A motor 2003 and a motor 2004 are mounted on the rotating shafts 2002. The rotation of the motors 2003 and 2004 drives the rotating shafts to rotate, thereby driving the conveyor belt 2001 to rotate.

[0042] The upper surface of the base 901 is provided with an arc-shaped groove 901-2. The arc-shaped groove 901-2 is located above the receiving groove 901-1 and is connected to the receiving groove 901-1. When the grouting pipe 5 is placed in the arc-shaped groove 901-2, it can contact the conveyor belt 2001 in the receiving groove 901-1. The conveyor belt 2001 can drive the grouting pipe 5 to move.

[0043] To further improve the stability of the grouting pipe 5 movement, two sets of clamping assemblies 21 are symmetrically arranged on both sides of the arc-shaped groove 901-2, including clamping plates 2101 set on the base 901, and multiple conveying wheels 2102 set below the clamping plates 2101, with the conveying wheels 2102 located on the upper surface of the base 901. The clamping plates 2101 and the conveying wheels 2102 are connected by a conveying shaft 2103 located inside the clamping plates 2101. A rotating wheel 2104 is sleeved on the upper end of the conveying shaft 2103. A motor 2105 is set on one side of the clamping plates 2101, and the motor 2105 is set on the fixed frame 902 on the top of the base 901. A rotating ring 2106 is set at the output end of the motor 2105. The outer diameter of the rotating ring 2106 and the rotating wheel 2104 is the same. A conveyor belt 2107 is sleeved on the rotating ring 2106 and the rotating wheel 2104.

[0044] When motor 3 2105 starts, it drives rotating ring 2106 to rotate, which in turn drives conveyor belt 2107 to rotate. Conveyor belt 2107 drives rotating wheel 2104 to rotate. Since rotating wheel 2104 is connected to rotating shaft 2002, it drives rotating shaft 2002 to rotate, which in turn drives bottom conveyor wheel 2102 to rotate. The two conveyor wheels 2102 on both sides rotate in opposite directions, which can push the grouting pipe 5 between them forward.

[0045] To accommodate grouting pipes 5 of different diameters, the distance between the clamps 2101 is adjustable. A hydraulic pipe 2108 is provided on one side near the inlet end of the grouting pipe 5. The hydraulic pipe 2108 includes a container pipe 2109 containing liquid. A drive rod 2110 and a moving rod 2111 are slidably connected to both ends of the container pipe 2109, respectively. The drive rod 2110 is located at the inlet end of the grouting pipe 5, and the side closest to it is rounded. The moving rod 2111 is connected to the clamps 2101 through a connecting rod 2112.

[0046] When the grouting pipe 5 is placed at the inlet end of the conveyor belt 2001, it moves towards the clamping plate 2101 under the action of the conveyor belt 2001 and pushes the drive rod 2110, causing the drive rods 2110 on both sides to move away from each other. The drive rods 2110 squeeze the liquid in the hydraulic pipe 2108, thereby shortening the length of the moving rod 2111 overlapping with the hydraulic pipe 2108. The moving rod 2111 drives the clamping plate 2101 to move away from the opposite clamping plate 2101, so that the distance between the clamping plates 2101 is determined by the diameter of the grouting pipe 5, and the fit is high.

[0047] To prevent leakage of the hydraulic pipe 2108, which could cause uneven pressure at both ends of the grouting pipe 5 and affect its stable and uniform movement, two sets of electromagnetic induction devices 22 are installed. A positioning plate 1 2201 is installed on the drive rod 2110, and a positioning plate 2202 is installed on the connecting rod 2112. Positioning plate 1 2201 and positioning plate 2202 are positioned opposite each other, with magnetic sheet 1 2203 and magnetic sheet 2204 respectively installed on their opposite surfaces. An extension plate 2205 is also installed on positioning plate 2202, located between positioning plate 1 2201 and positioning plate 2202. An electromagnetic coil 2206 is installed below the extension plate 2205, and a warning light 2207 is connected to the electromagnetic coil 2206.

[0048] To limit the movement direction of positioning plate 2201 and positioning plate 2202, guide grooves 902-1 and 902-2 are provided on the fixed frame 902. Positioning plate 2201 slides within guide groove 902-1, and positioning plate 2202 slides within guide groove 902-2. Magnetic sheet 2203 and 2204, electromagnetic coil 2206, and warning light 2207 are all located on the outside of the fixed frame 902 for easy observation.

[0049] Two sets of electromagnetic induction devices 22 are used to dynamically monitor the distance between the two clamping plates 2101. When the hydraulic pipe 2108 leaks, the drive rod 2110 and the moving rod 2111 will move at different distances, which will cause the distance between magnetic plate 1 2203 and magnetic plate 2204 to be less than the initial distance. That is, magnetic plate 1 2203 and magnetic plate 2204 will get closer. The electricity generated by the magnet will cause the warning light 2207 to light up through the coil, reminding the staff to carry out maintenance operations.

[0050] Example 2 Furthermore, in order to prevent the transmission wheel 2102 from malfunctioning and excessively squeezing the grouting pipe 5, causing damage to the grouting pipe 5, an overpressure protection component 23 is provided.

[0051] The overvoltage protection assembly 23 includes a central shaft 2301 located inside the conveyor shaft 2103, which moves up and down within the conveyor shaft 2103. Multiple sliders 2302 are horizontally arranged inside the conveyor wheel 2102, with the side of each slider 2302 near its center having an inclined structure. The central shaft 2301 is located between the sliders 2302. The conveyor wheel 2102 is made of deformable rubber.

[0052] The rotating wheel 2104 and the conveying shaft 2103 are connected by a magnetic block 2303. The conveying shaft 2103 has four horizontal holes along the circumference. The rotating wheel 2104 has four horizontal grooves at positions corresponding to the horizontal holes. The horizontal grooves are connected to the horizontal holes and the magnetic blocks 2303 are slidably connected inside them. The side of the magnetic block 2303 facing the center has the same pole. Like poles repel each other, so the magnetic block 2303 is embedded inside the rotating wheel 2104. The magnetic block 2303 is attracted to the side wall of the rotating wheel 2104, so the rotating wheel 2104 and the conveying shaft 2103 can rotate synchronously. A quadrangular prism 2304 is provided at the upper end of the central shaft 2301. The outer surface of the quadrangular prism 2304 is provided with a magnetic layer opposite to that of the magnetic block 2303. In the initial state, the central shaft 2301 is located at the bottom end, and the magnetic force between the magnetic block 2303 and the rotating wheel 2104 is greater than the magnetic force between the quadrangular prism 2304 and the magnetic block 2303. When the central shaft 2301 is squeezed and raised by the slider 2302, the distance between the quadrangular prism 2304 and the magnetic block 2303 is shortened, and the magnetic force between the magnetic block 2303 and the rotating wheel 2104 is less than the magnetic force between the quadrangular prism 2304 and the magnetic block 2303. The magnetic block 2303 moves towards the center, and the outermost part of the magnetic block 2303 is located within the horizontal hole range. The rotating wheel 2104 and the transmission shaft 2103 are disconnected, and the transmission shaft 2103 will not rotate with the rotating wheel 2104.

[0053] At this time, the load on motor 3 2105 decreases, and the rotation speed of conveyor belt 2 2107 increases. A speed controller 8 is installed on one side of motor 3 2105, and a block to be tested is placed on conveyor belt 2 2107. The movement of the block to be tested is recorded by the speed controller 8, thereby detecting the speed of conveyor belt 2 2107. Electric telescopic rods 2305 are installed on the clamping plates 2101 on both sides to push the opposing clamping plates 2101.

[0054] When the speed increases, it indicates that there is an abnormality in the compression of the grouting pipe 5 against the conveyor wheel 2102. At this time, the speed controller 8 controls the electric telescopic rod 2305 to extend and push the clamps 2101 on both sides in the opposite direction, so that the conveyor wheel 2102 no longer compresses the grouting pipe 5, making it easier to carry out maintenance operations.

[0055] When the pressure exerted by the conveyor wheel 2102 on the grouting pipe 5 is too great, the grouting pipe 5 presses inward against the conveyor wheel 2102, which in turn presses against the slider 2302 inside the conveyor wheel 2102. The slider 2302 pushes the central shaft 2301 upward, and the central shaft 2301 pulls the magnetic block 2303 out of the rotating wheel 2104. The second conveyor belt 2107 only drives the rotating wheel 2104 to rotate, and the conveyor shaft 2103 and the conveyor wheel 2102 stop rotating. At this time, because the load on the third motor 2105 is reduced, the rotation speed of the second conveyor belt 2107 will increase. The speed controller 8 detects that the speed of the block to be detected is increasing, and starts the electric telescopic rod 2305 to extend, pushing the two clamping plates 2101 to both ends. The conveyor wheel 2102 will no longer press against the grouting pipe 5.

[0056] Example 3 Correspondingly, the construction methods for automatic positioning and grouting of sleeve valve pipe 14 under different construction conditions include the following specific steps: Step 1: Drill holes and install sleeve valve tube 14.

[0057] Before construction, the sleeve valve pipe 14 needs to fix the electromagnetic beacon 24 at a distance of 3cm~5cm from the grouting port rubber sleeve 13 according to the design spacing. Install a positioning ring 25 every 1m~2m, taking care to avoid the grouting port position, and mark the drilling position according to the design drawings.

[0058] A drilling rig is used to create a hole in one pass, drilling to the designed elevation or depth. During tunnel face construction, the bottom seal of the connected sleeve valve pipe 14 and the PVC pipe are inserted into the hole together. The exposed section 10 of the sleeve valve pipe 14 is 20cm higher than the tunnel cross-section 11. First, quick-setting cement mortar is used to seal the gap at a distance of 2m. A mud pump is then used to inject the mixed casing material into the gap between the sleeve valve pipe 14 and the hole through a double-plug grouting plug 15 at the deepest grouting port in the hole. During surface construction, the bottom seal of the connected sleeve valve pipe 14 and the PVC pipe are inserted into the hole together, with the sleeve valve pipe 14 extending 20cm beyond the hole opening. A mud pump is used to inject the mixed casing material between the sleeve valve pipe 14 and the rock strata through the PVC pipe. The casing material ratio is bentonite:cement:water = 2:1:9. When the casing material is injected 2m from the hole opening, quick-setting cement mortar is used to seal the gap to prevent grout leakage during the grouting process.

[0059] Step 2: Device setup.

[0060] The dual storage tanks 1, A and B, are respectively prepared with water glass single-component grout and cement single-component grout. These are transported to the grouting pipe 5 through pipes A and B, controlled by an electronic rotary valve 3. During tunnel construction, the pipe delivery machine 9 is placed in a suitable position, and the horizontal pipe delivery machine support 26 is adjusted to align the pipe delivery angle with the drilling angle. The support pulley 19 is then locked to secure the pipe delivery machine 9. During ground construction, the vertical pipe delivery machine support 30 is aligned with the grouting hole, and the support pulleys 6 and 7 are locked to secure the pipe delivery machine 9. The airbags 16 and 17 on both sides of the double-plug grouting plug 15 are pre-inflated to 0.2 MPa to check for sealing. The pipe delivery speed is input on the control panel of the controller 8.

[0061] Step 3: Send the pipe to the grouting port. After the casing material has solidified, the pipe can be sent for grouting.

[0062] The grouting pipe 2, grouting pipe 5, pressure sensor 4, electronic rotary valve 3, and double-plug grouting plug 15 are connected together. The grouting pipe 5 is placed on the arc groove 901-2. Under the action of the conveyor belt 2001, the grouting pipe 5 moves towards the clamping plate 2101 and pushes the drive rod 2110, causing the drive rods 2110 on both sides to move away from each other. The drive rod 2110 squeezes the liquid in the hydraulic pipe 2108, thereby shortening the length of the moving rod 2111 overlapping with the hydraulic pipe 2108. The moving rod 2111 drives the clamping plate 2101 to move away from the opposite clamping plate 2101. When the motor 2105 is started, it can drive the rotating ring 2106 to rotate, which in turn drives the conveyor belt 2107 to rotate. The conveyor belt 2107 can drive the rotating wheel 2104 to rotate. Since the rotating wheel 2104 is connected to the rotating shaft 2002, it can drive the rotating shaft 2002 to rotate, which in turn drives the bottom conveyor wheel 2102 to rotate. The two conveyor wheels 2102 rotate in opposite directions, which can push the grouting pipe 5 between them forward. During the movement of the grouting pipe 5, the sensor and miniature ground-penetrating radar 12 inside the double-plug grouting plug 15 continuously scan the electromagnetic beacon 24 signal. When the signal strength reaches the threshold, the controller 8 controls the pipe feeder 9 to stop feeding the pipe and lock the pipe feeder 9.

[0063] Step 4: Segmented grouting.

[0064] The miniature ground-penetrating radar, acting as a geological identification module, can identify the soil properties of strata and feed the data back to the controller 8. The controller 8 adjusts the parameters of the pressure sensor 4 and controls the electronic rotary valve 3 to select appropriate grouting pressure and grouting material for different strata. For example, for silty clay, the grouting pressure is 1.2 MPa, the grouting material is cement single-liquid grout, and the grouting volume is 0.8 m³ / m; for breccia, the pressure is 2.5 MPa, the grouting material is cement-water glass double-liquid grout, and the grouting volume is 1.2 m³ / m.

[0065] The air bladder plug 16 and air bladder plug 2 17 above and below the double-plug grouting plug 15 expand to the working pressure, the electronic rotary valve 3 opens, isolating the current grouting section, the grouting pump starts, and under the action of the grouting port rubber sleeve 13 and the upper and lower air bladder plugs 16 and air bladder plug 2 17, the grout is squeezed through the grouting port of the sleeve valve pipe 14 and injected into the formation. The pressure sensor 4 monitors in real time. The grouting sequence is carried out in a backward grouting manner from the bottom of the hole to the hole opening. The controller 8 determines that the grouting is completed.

[0066] When the grouting pressure reaches the final pressure and remains stable for at least 3 minutes, the single-stage grouting can be terminated. Alternatively, even if the final pressure has not been reached, but the grouting volume has reached 1.5 times the design volume and there is no leakage, the single-stage grouting can also be terminated. The electronic rotary valve 3 is closed to stop grouting. The air bladder plugs 16 and 17 above and below the grouting plug are depressurized. The pipe delivery machine 9 is unlocked, and the double-plug grouting plug 15 is retracted to begin grouting of the second grouting stage. This cycle is repeated until the end. During the process, every 3m to 4m of advancement, workers need to remove or add grouting pipe 5.

[0067] Step 5: Global grouting. Grouting of sleeve valve pipe 14 is carried out from the outside to the inside in a constrained-divergent manner. That is, first, the peripheral holes are grouted in an intermittent skip-hole manner to form a network structure and grouting skeleton; then, the inner ring holes are grouted to achieve a gradual compression and compaction effect. Considering the groundwater distribution in the project area, the above grouting construction sequence can also constrain the water flow direction in the middle position, so that the groundwater is discharged from the reserved drainage outlet as the grouting process progresses, ensuring the overall reinforcement effect. During the grouting process, a dedicated person needs to observe the changes in the ground and slope around the grouting point. If grout seeps out in multiple places on the surrounding ground or slope, grouting can be paused, the grouting plug can be raised to carry out the next section of grouting, or grouting can be resumed after the injected cement grout has initially set.

[0068] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An automatic positioning and grouting device for sleeve valve pipes under different construction conditions, characterized in that, include: The two storage tanks (1) and the grouting pipe (5) are connected in sequence, and a sleeve valve pipe (14) is sleeved on the outside of the near end of the grouting pipe. The grouting pipe (5) is passed through the pipe feeder (9), and the distance to the near end of the grouting pipe (5) is adjusted by using the pipe feeder (9).

2. The automatic positioning and grouting device for sleeve valve pipes under different construction conditions according to claim 1, characterized in that: The grouting pipe (5) is equipped with a sensor and a miniature ground-penetrating radar (12), which can identify the electromagnetic beacon (24) installed on the sleeve valve pipe (14).

3. The automatic positioning and grouting device for sleeve valve pipe (14) under different construction conditions according to claim 2, characterized in that, The pipe feeder (9) includes a base (901), on which are provided: The conveying assembly (20), located inside the base (901), is used to drive the conveying of the grouting pipe (5); The clamp assembly (21) is mounted on the base (901) and symmetrically arranged on both sides of the conveying assembly (20); An overpressure protection component (23) is located inside the clamping assembly (21) for fault protection when the grouting pipe (5) is over-pressurized.

4. The automatic positioning and grouting device for sleeve valve pipe (14) under different construction conditions according to claim 3, characterized in that: The conveying assembly (20) includes a conveyor belt (2001) disposed in the base (901), the conveyor belt (2001) being disposed along the axial direction of the grouting pipe (5); The upper surface of the base (901) is provided with an arc groove (901-2), and the grouting pipe (5) is placed in the arc groove (901-2).

5. The automatic positioning and grouting device for sleeve valve pipe (14) under different construction conditions according to claim 4, characterized in that: The clamp assembly (21) includes a clamping plate (2101), and multiple sets of rotating wheels (2104) and conveying wheels (2102) are respectively arranged on the upper and lower sides of the clamping plate (2101). The rotating wheels (2104) and conveying wheels (2102) are connected by a conveying shaft (2103). A motor three (2105) is provided on one side of the clamping plate (2101), and a rotating ring (2106) is provided at the output end of the motor three (2105). A conveyor belt two (2107) is sleeved on the rotating ring (2106) and the rotating wheel (2104).

6. The automatic positioning and grouting device for sleeve valve pipe (14) under different construction conditions according to claim 5, characterized in that: The clamp assembly (21) further includes a hydraulic pipe (2108), which includes a drive rod (2110), a receiving pipe (2109), and a moving rod (2111) that are slidably connected in sequence. The moving rod (2111) is connected to the clamp plate (2101) via a connecting rod (2112).

7. The automatic positioning and grouting device for sleeve valve pipe (14) under different construction conditions according to claim 6, characterized in that: The overvoltage protection component (23) includes a central shaft (2301) located inside the transmission shaft (2103), the central shaft (2301) being slidably connected to the transmission shaft (2103), and multiple sliders (2302) being arranged horizontally inside the transmission wheel (2102), with the central shaft (2301) located between the sliders (2302).

8. The automatic positioning and grouting device for sleeve valve pipe (14) under different construction conditions according to claim 7, characterized in that: The rotating wheel (2104) and the transmission shaft (2103) are connected by magnetic blocks (2303). Four magnetic blocks (2303) are arranged on the transmission shaft (2103) along the circumferential direction. The magnetic blocks (2303) are connected to the side wall of the rotating wheel (2104). A quadrangular prism (2304) is arranged at the upper end of the central shaft (2301). The outer surface of the quadrangular prism (2304) is provided with a magnetic layer opposite to that of the magnetic blocks (2303).

9. The automatic positioning and grouting device for sleeve valve pipes under different construction conditions according to claim 8, characterized in that: A speed controller (8) is provided on one side of the motor three (2105), and a block to be tested is provided on the conveyor belt two (2107); an electric telescopic rod (2305) is provided on each of the clamps (2101) for pushing the opposite clamps (2101).

10. A construction method for automatic positioning and grouting of sleeve valve pipes under different construction conditions, characterized in that: The construction method of using the automatic positioning and grouting device for sleeve valve pipe under different construction conditions as described in any one of claims 1 to 9 is as follows: Step 1: Drill holes and install sleeve valve tubes (14); Step 2: Equipment Setup; Step 3: Grouting through pipe insertion; The grouting pipe (5) is placed on the arc groove (901-2). Under the action of the conveyor belt (2001), the grouting pipe (5) moves towards the clamping plate (2101) and pushes the drive rod (2110), causing the drive rods (2110) on both sides to move away from each other. The drive rod (2110) squeezes the liquid in the hydraulic pipe (2108), thereby shortening the length of the moving rod (2111) overlapping with the hydraulic pipe (2108). The moving rod (2111) drives the clamping plate (2101) to move away from the opposite clamping plate (2101). Start motor three (2105), which drives the rotating ring (2106) to rotate, which in turn drives the second conveyor belt (2107) to rotate. The second conveyor belt (2107) can drive the rotating wheel (2104) to rotate. Since the rotating wheel (2104) is connected to the rotating shaft (2002), it can drive the rotating shaft (2002) to rotate, which in turn drives the bottom conveyor wheel (2102) to rotate. The two conveyor wheels (2102) on both sides rotate in opposite directions, which can push the grouting pipe (5) between them to move forward. During the movement of the grouting pipe (5), the sensor inside the double-plug grouting plug (15) continuously scans the electromagnetic beacon (24) signal. When the signal strength reaches the threshold, the controller (8) controls the pipe feeder (9) to stop feeding the pipe and lock the pipe feeder (9). Step 4: Segmented grouting; Step 5: Global grouting.

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