Tunnel deep hole grouting device and method

Abstract

The application discloses a tunnel deep hole grouting device and method, comprising a driving device, the rotating end of the driving device is connected with a drilling part or a steel pipe or a grouting part, wherein the rotating end of the driving device is connected with the drilling part to drive the drilling part to rotate. The application can realize the drilling, steel pipe installation and grouting of surrounding rock or soil through a driving device. In the above process, only the corresponding construction structure needs to be replaced, and the driving device does not need to be replaced, so that the device has few types of use, low cost and short time consumption. In addition, when the steel pipe is installed, the outer wall of the steel pipe is smooth and convenient to install in the grouting hole. Before grouting starts, the grouting part is installed in the steel pipe, the grouting part extrudes the grouting guide part into the surrounding rock or soil around the steel pipe, the existence of the grouting guide part improves the connecting strength between the steel pipe and the surrounding rock or soil, and the grouting guide part facilitates the grouting of the surrounding rock or soil.

Description

Technical Field

[0001] This invention belongs to the technical field of tunnel grouting equipment, and particularly relates to a deep hole grouting device and method for tunnels. Background Technology

[0002] In areas with short self-stabilization time, such as weak fracture zones, shallow buried sections, tunnel entrance bias faults, sandy sections, gravel sections, and fault fracture zones, steel perforated pipes are typically used for pre-support. Subsequent grouting allows the slurry to penetrate into the rock and soil, aiming to improve the rock's anti-sliding capacity and enhance the physical and mechanical properties of the rock and soil to facilitate subsequent construction. After grouting, the steel perforated pipes remain in the rock to provide anchoring and anti-sliding effects.

[0003] In existing technologies, when using tunnel grouting to reinforce the surrounding rock or soil of a tunnel by injecting mud or cement grout, multiple grouting holes need to be opened in the circumferential and radial directions of the tunnel wall before grouting, depending on the actual situation. After the grouting holes are opened, steel pipes are inserted into the grouting holes, and then the grouting structure is extended into the steel pipes to carry out grouting operations in stages.

[0004] The aforementioned process requires the use of different driving equipment for drilling grouting holes, inserting steel pipes, and performing grouting operations. This results in high operating costs, and equipment replacement is time-consuming and labor-intensive. Furthermore, most existing steel pipes are simply tubular structures with smooth outer surfaces to facilitate insertion into grouting holes. However, this surface design leads to poor adhesion between the steel pipe's outer surface and the surrounding rock or soil. Simultaneously, during grouting, the diffusion of mud or cement slurry into the surrounding rock or soil is not ideal. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention proposes a deep-hole grouting device and method for tunnels. This device enables drilling, installation of steel pipes, and grouting of surrounding rock or soil using a single driving mechanism. During this process, only the corresponding construction structure needs to be replaced, not the driving mechanism. Therefore, the device has fewer types of components, lower cost, and shorter processing time. Furthermore, the smooth outer wall of the steel pipe facilitates insertion into the grouting hole. Simultaneously, before grouting begins, a grouting component is inserted into the steel pipe. This component compresses a grout guide component, which extends into the surrounding rock or soil. The presence of the grout guide component enhances the connection strength between the steel pipe and the surrounding rock or soil, and also facilitates grouting into the surrounding rock or soil.

[0006] To achieve the above objectives, the present invention provides a deep-hole grouting device for tunnels, comprising,

[0007] A driving device, wherein the rotating end of the driving device is connected to a drilling component, a steel pipe, or a grouting component, wherein the rotating end of the driving device is connected to the drilling component to drive the drilling component to rotate, the rotating end of the driving device is in contact with the steel pipe to push the steel pipe into the grouting hole, and the rotating end of the driving device is connected to the grouting component to push the grouting component into the steel pipe;

[0008] The grout guide is corresponding to the grout outlet of the steel pipe. The grout outlet end of the grout guide is flush with the outer wall of the steel pipe. The grout inlet end of the grout guide is located inside the steel pipe. The grout injection end of the grout injection component is used to squeeze the grout guide out of the steel pipe.

[0009] The structure is breakable, in which the grout guides in the two corresponding grout outlet holes are connected by the breakable structure, and the two grout guides are separated by the breakable structure at the grouting end of the grouting component.

[0010] Furthermore, the driving device includes a rotary drilling rig, which is fixed to the top of the support frame. The output end of the rotary drilling rig is connected to a rotary joint. The drilling component is a drill rod, and one end of the drill rod is detachably connected to the rotary drilling rig through the rotary joint.

[0011] Furthermore, a slide rail is fixedly connected to the top of the support frame, and the steel pipe and the grouting component are in contact with the rotary joint through a first connector and a second connector, respectively. The first connector and the second connector are slidably connected to the slide rail, and the rotary joint is used to push the steel pipe and the grouting component to move horizontally.

[0012] Furthermore, the first connector includes a connecting sealing plate that passes through and is fixed to the end of the steel pipe. The bottom of the connecting sealing plate has a groove adapted to the slide rail. A first driving plate is provided between the end of the steel pipe and the rotary joint. The bottom of the first driving plate has another groove adapted to the slide rail. The rotary joint contacts the first driving plate and is used to push the first driving plate to move. The first driving plate is detachably connected to the connecting sealing plate by multiple first connecting bolts. The connecting sealing plate is used to seal the grouting hole.

[0013] The second connecting member includes a connecting movable plate that passes through and is fixed to the end of the grouting component. The bottom of the connecting movable plate has another sliding groove that is adapted to the slide rail. The first drive plate is detachably connected to the connecting movable plate by multiple second connecting bolts.

[0014] Furthermore, the grouting component includes a grouting pipe, the end of the grouting pipe away from the rotary joint is a conical cylinder, the end of the conical cylinder away from the grouting pipe is provided with a grout outlet, and the grouting pipe is connected to a grout supply tank through a grout supply pipe. The conical cylinder is used to break the breakable structure and squeeze the grout guide component out of the steel flower pipe.

[0015] Furthermore, the slurry guide includes a slurry passage cylinder located inside the slurry outlet hole. The outer wall diameter of the slurry outlet end of the slurry passage cylinder is adapted to the inner wall diameter of the slurry outlet hole. The outer wall diameter of the slurry inlet end of the slurry passage cylinder is smaller than the outer wall diameter of the slurry outlet end of the slurry passage cylinder. A slurry passage channel is formed inside the slurry passage cylinder. The inner wall diameter of the slurry outlet end of the slurry passage channel is smaller than the inner wall diameter of the slurry inlet end of the slurry passage channel.

[0016] Furthermore, the outer wall of the slurry cylinder is provided with several grooves, and the slurry outlet end of the slurry cylinder extends into the surrounding rock or soil through the grooves.

[0017] Furthermore, an arc-shaped plate is fixedly connected to the slurry inlet end of the slurry passage cylinder. The side of the arc-shaped plate near the inner wall of the steel flower pipe is adapted to the inner wall of the steel flower pipe. The arc-shaped plate is used to limit the slurry passage cylinder and block the slurry outlet of the steel flower pipe.

[0018] Furthermore, the breakable structure includes two breakable plate groups, which are arranged vertically and vertically to connect two oppositely arranged arc-shaped plates. The conical cylinder is located between the two breakable plate groups. Each breakable plate group includes two oppositely arranged breakable plates, and the breakable plates are moved away from the fracture by the two arc-shaped plates.

[0019] The method and steps for using a deep-hole grouting device for tunnels include:

[0020] S1. Opening grouting holes: Connect the drilling component to the output end of the drive device, start the drive device to drive the drilling component to drill a hole at the predetermined position.

[0021] S2. Seal the grouting hole: Remove the drilled part and seal the grouting hole with cement;

[0022] S3. Insert the steel pipe: Open the cement-sealed grouting hole, replace the drilling part with the steel pipe, and start the drive device to push the steel pipe into the grouting hole.

[0023] S4. Start grouting: Replace the steel pipe with a grouting component, start the drive device to push the grouting component into the steel pipe, and start grouting.

[0024] S5. Grouting completed: Remove the grouting component and reseal the grouting hole.

[0025] Compared with the prior art, the present invention has the following advantages and technical effects:

[0026] 1. The operation of drilling, installing steel pipes and grouting in the surrounding rock or soil is carried out by a driving device. In the above process, only the corresponding construction structure needs to be replaced, but the driving device does not need to be replaced. Therefore, the equipment has fewer types and lower cost, while also taking less time.

[0027] 2. When installing the steel pipe, the smooth outer wall of the steel pipe makes it easy to install into the grouting hole. At the same time, before grouting begins, a grouting component is installed into the steel pipe. The grouting component squeezes the grout guide component into the surrounding rock or soil. The presence of the grout guide component increases the connection strength between the steel pipe and the surrounding rock or soil. On the other hand, the grout guide component facilitates grouting into the surrounding rock or soil. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0029] Figure 1 A three-dimensional view of the grouting component extending into the steel pipe;

[0030] Figure 2 A three-dimensional view of the drilled part in the drilling state;

[0031] Figure 3 A three-dimensional view of the steel pipe being inserted into the grouting hole;

[0032] Figure 4 An exploded view showing the connection between the steel pipe and the grout guide.

[0033] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0034] Figure 6 A three-dimensional view of the fracture state of a cone-shaped extrusion fracture structure;

[0035] Figure 7 This is a cross-sectional view of the slurry tube;

[0036] Figure 8 Flowchart of deep hole grouting process;

[0037] Figure 9 Flowchart for the process of extending the steel pipe from the slurry cylinder;

[0038] Among them, 1-steel flower pipe, 2-grout outlet, 3-rotary traveling drill, 4-support frame, 5-rotary joint, 6-drill rod, 7-slide rail, 8-connecting sealing plate, 9-first drive plate, 10-first connecting bolt, 11-connecting moving plate, 12-second connecting bolt, 13-grouting pipe, 14-conical cylinder, 15-grout outlet, 16-grout supply pipe, 17-grout supply box, 18-grout passage cylinder, 19-grout passage channel, 20-groove, 21-arc plate, 22-breakable plate, 23-lifting support. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0041] Reference Figure 1-9 This invention provides a deep-hole grouting device for tunnels, comprising: a driving device, wherein the rotating end of the driving device is connected to a drilling component, a steel pipe 1, or a grouting component, wherein the rotating end of the driving device is connected to the drilling component to drive the drilling component to rotate, the rotating end of the driving device contacts the steel pipe 1 to push the steel pipe 1 into the grouting hole, and the rotating end of the driving device is connected to the grouting component to push the grouting component into the steel pipe 1; a grout guide, corresponding to the grout outlet 2 of the steel pipe 1, the grout outlet end of the grout guide is flush with the outer wall of the steel pipe 1, the grout inlet end of the grout guide is located inside the steel pipe 1, and the grouting end of the grouting component is used to squeeze the grout guide out of the steel pipe 1; and a breakable structure, wherein the grout guides in two correspondingly arranged grout outlets 2 are connected by the breakable structure, and the breakable structure is used to separate the two grout guides by breaking at the grouting end of the grouting component.

[0042] Understandably, under the action of the drive device, the drilling component, steel pipe 1, and grouting component are driven to move horizontally in different ways, thereby realizing the function of the drilling component opening grouting holes, the steel pipe 1 being inserted into the grouting holes, and the grouting component extending into the steel pipe 1 for grouting.

[0043] Meanwhile, before the grouting component extends into the steel pipe 1 for grouting, the grout guide component is squeezed by the grouting end of the grouting component and extends out of the steel pipe 1 through the grout outlet 2. The outer end of the grout guide component is inserted into the surrounding rock or soil around the steel pipe 1, so that the surface of the steel pipe 1 changes from smooth to uneven, thereby improving the connection strength between the steel pipe 1 and the surrounding rock or soil. At the same time, because the grout outlet 2 of the steel pipe 1 is inserted deeper into the surrounding rock or soil under the action of the grout guide component, it is convenient for the grout to diffuse during grouting.

[0044] A breakable structure is provided, and during the installation of the steel pipe 1, the grout outlet end of the grout guide is flush with the outer wall of the steel pipe 1. The purpose of the breakable structure is to connect the two oppositely arranged grout guides, so that when the steel pipe 1 is installed into the grouting hole, the grout guide does not protrude from the steel pipe 1, ensuring that the outer surface of the steel pipe 1 is smooth.

[0045] Further optimize the plan, referring to Figure 2 The drive unit includes a rotary drilling rig 3, which is fixed to the top of the support frame 4. The output end of the rotary drilling rig 3 is connected to a rotary joint 5. The drilling component is a drill rod 6, and one end of the drill rod 6 is detachably connected to the rotary drilling rig 3 through the rotary joint 5.

[0046] The drive unit is a rotary drilling rig 3 or a conventional drive structure for driving the drill rod 6 to rotate and drill. A rotary joint 5 is connected to its output end. During use, the drill rod 6 is mounted on the rotary joint 5, which drives the drill rod 6 to rotate. Simultaneously, during rotation, the rotary drilling rig 3 drives the drill rod 6 to rotate and advance, thus completing the drilling operation. After drilling is completed, the drill rod 6 is removed through the grouting hole, and the drill rod 6 and rotary joint 5 are disassembled. Subsequent installation of the steel pipe 1 is then carried out.

[0047] The scheme is further optimized. The top of the support frame 4 is fixed with a slide rail 7. The steel pipe 1 and the grouting component are in contact with the rotary joint 5 through the first connector and the second connector, respectively. The first connector and the second connector are slidably connected to the slide rail 7, and the rotary joint 5 is used to push the steel pipe 1 and the grouting component to move horizontally.

[0048] Further optimize the plan, referring to Figure 1 , Figure 3 The first connecting member includes a connecting sealing plate 8 that is fixed to the end of the steel pipe 1. The bottom of the connecting sealing plate 8 is provided with a groove that is compatible with the slide rail 7. A first driving plate 9 is provided between the end of the steel pipe 1 and the rotary joint 5. The bottom of the first driving plate 9 is provided with another groove that is compatible with the slide rail 7. The rotary joint 5 contacts the first driving plate 9 and is used to push the first driving plate 9 to move. The first driving plate 9 is detachably connected to the connecting sealing plate 8 by multiple first connecting bolts 10. The connecting sealing plate 8 is used to seal the grouting hole.

[0049] The second connecting component includes a connecting movable plate 11 that is fixed to the end of the grouting component. The bottom of the connecting movable plate 11 has another sliding groove that is adapted to the slide rail 7. The first drive plate 9 is detachably connected to the connecting movable plate 11 by multiple second connecting bolts 12.

[0050] Understandably, the slide rail 7 provides support for the connecting sealing plate 8, the first drive plate 9, and the connecting moving plate 11. When the steel tube 1 is inserted, multiple first connecting bolts 10 connect the first drive plate 9 and the connecting sealing plate 8. During the rotation of the rotary joint 5, the rotary joint 5 presses against the first drive plate 9, sending the steel tube 1 into the grouting hole. Even after the connecting sealing plate 8 leaves the slide rail 7, the rotary joint 5 can still rotate and press against the steel tube 1 once it has partially entered the grouting hole. After the steel tube 1 is delivered to the predetermined position, the first drive plate 9 and... Connect the sealing plate 8. At the same time, the first connecting bolt 10, which serves as the connection, can be detached and reinserted into the connecting sealing plate 8. After the grouting hole is opened, cement sealing is required. Before or after the steel pipe 1 is inserted, a hole is drilled on the cement seal corresponding to the position of the first connecting bolt 10. After the steel pipe 1 is sent to the predetermined position in the grouting hole, the first connecting bolt 10 is used to fix the connecting sealing plate 8 and the cement seal. On the one hand, it supports the steel pipe 1, and on the other hand, the connecting sealing plate 8 seals the gap between the outer wall of the steel pipe 1 and the drilled hole on the cement seal.

[0051] After the steel pipe 1 is installed, the rotary joint 5 is reset and connected to the first drive plate 9 and the connecting moving plate 11 through the second connecting bolt 12. The grouting component is sent into the steel pipe 1 by driving the connecting moving plate 11 to move.

[0052] In one embodiment of the present invention, the rotary joint 5 contacts the side wall of the first drive plate 9 to push the first drive plate 9 to move. Other equipment may be used during the removal of the grouting component and the grouting process.

[0053] In another embodiment of the present invention, the rotary joint 5 can be detachably connected to the first drive plate 9 via a bearing (not shown in the figure). When the rotary joint 5 is connected to the first drive plate 9, the bearing enables the rotary joint 5 to drive the first drive plate 9 to move in both directions. With this structure, the grouting component can be sent into the steel pipe 1 and the grouting component can be taken out of the steel pipe 1.

[0054] In the specific construction of the above structure, compared with the existing technology, which requires replacing the equipment to send the steel pipe 1 into the grouting hole after the grouting hole is opened and the sealing cement has solidified, and then replacing the equipment to send the grouting component into the steel pipe 1, this technical solution does not require replacing the entire equipment, but only the corresponding structural components. Compared with the construction time required by the existing technology, this technical solution can save one-fifth of the construction time.

[0055] Further optimize the plan, referring to Figure 1 The grouting component includes a grouting pipe 13. The end of the grouting pipe 13 away from the rotary joint 5 is a conical cylinder 14. The end of the conical cylinder 14 away from the grouting pipe 13 is provided with a grout outlet 15. The grouting pipe 13 is connected to a grout supply box 17 through a grout supply pipe 16. The conical cylinder 14 is used to break the breakable structure and squeeze the grout guide component out of the steel flower pipe 1.

[0056] Understandably, the presence of the conical cylinder 14 enables the grouting operation. At the same time, as the conical cylinder 14 moves in the steel pipe 1, its outer diameter gradually increases. Therefore, when the conical cylinder 14 continues to move after extending between the two grout guides, it squeezes the two grout guides to move in opposite directions and forces them to separate and no longer connect.

[0057] The slurry supply tank 17 is used to pump slurry into the slurry supply pipe 16 and finally discharge the slurry through the slurry outlet 15.

[0058] Furthermore, the portion of the steel pipe 1 located outside the grouting hole is supported by a lifting support 23, which further ensures the stability of the steel pipe 1.

[0059] Further optimize the plan, referring to Figure 4 , Figure 6 The slurry guide includes a slurry tube 18 located inside the slurry outlet hole 2. The outer diameter of the slurry outlet end of the slurry tube 18 is adapted to the inner diameter of the slurry outlet hole 2. The outer diameter of the slurry inlet end of the slurry tube 18 is smaller than the outer diameter of the slurry outlet end of the slurry tube 18. A slurry channel 19 is opened inside the slurry tube 18. The inner diameter of the slurry outlet end of the slurry channel 19 is smaller than the inner diameter of the slurry inlet end of the slurry channel 19.

[0060] Understandably, since the outer diameter of the grout outlet of the grouting cylinder 18 is matched with the inner diameter of the grout outlet hole 2, and the grout outlet of the grouting cylinder 18 is flush with the outer wall of the steel pipe 1, after the steel pipe 1 is installed into the grouting hole, the outer wall of the steel pipe 1 comes into contact with the surrounding rock or soil. Under the action of the conical cylinder 14 and the grouting pipe 13, the grouting cylinder 18 is squeezed and inserted into the surrounding rock or soil, making the surface of the steel pipe 1 become an uneven structure, thereby improving the connection strength between the steel pipe 1 and the surrounding rock or soil.

[0061] Meanwhile, the grout passage 19 is used to discharge grout and extends into the surrounding rock or soil, which correspondingly extends the grout discharge distance in the surrounding rock or soil, allowing the grout to enter the surrounding rock or soil better. At the same time, since the inner diameter of the grout discharge end of the grout passage 19 is smaller than the inner diameter of the grout inlet end of the grout passage 19, when the grout is discharged, the grout is squeezed through the smaller diameter discharge end and can be ejected at a faster speed.

[0062] Specifically, the outer wall of the steel pipe 1 is provided with multiple slurry outlet holes 2 for discharging slurry.

[0063] Furthermore, the diameter of the slurry outlet end of the slurry outlet 2 is larger than the diameter of the slurry inlet end of the slurry outlet 2. Under this setting, the slurry passing cylinder 18 cannot move into the steel flower pipe 1.

[0064] Further optimize the plan, referring to Figure 5 , Figure 7 The outer wall of the grouting cylinder 18 is provided with several grooves 20, and the grout outlet end of the grouting cylinder 18 extends into the surrounding rock or soil through the grooves 20.

[0065] Understandably, the presence of the groove 20 facilitates the insertion of the grouting cylinder 18 into the surrounding rock or soil, and further enhances the connection strength between the steel pipe 1 and the surrounding rock or soil. On the other hand, the presence of the groove 20 prevents the grouting cylinder 18 from rotating on its own, thus ensuring the effective discharge of grout during the grouting process.

[0066] Further optimize the plan, referring to Figure 6 , Figure 7 An arc-shaped plate 21 is fixedly connected to the inlet end of the slurry cylinder 18. The side of the arc-shaped plate 21 near the inner wall of the steel pipe 1 is adapted to the inner wall of the steel pipe 1. The arc-shaped plate 21 is used to limit the movement of the slurry cylinder 18 and block the outlet hole 2 of the steel pipe 1.

[0067] Because the inlet diameter of the slurry cylinder 18 is small, an arc-shaped plate 21 is provided. The arc-shaped plate 21 moves with the slurry cylinder 18. When the arc-shaped plate 21 contacts the inner wall of the steel pipe 1, it adheres to the inner wall of the steel pipe 1 and blocks the slurry outlet 2, so that the slurry in the steel pipe 1 can only be discharged through the slurry passage 19. At the same time, the presence of the arc-shaped plate 21 can limit the slurry cylinder 18, preventing it from leaving the steel pipe 1.

[0068] With this structural design, compared to the existing technology where the outer surface of the steel pipe 1 is smooth and inserted into the grouting hole, this technical solution can increase the connection strength between the steel pipe 1 and the surrounding rock or soil by 1.2 to 1.3 times. At the same time, after subsequent experiments, the structure of this technical solution shows that, compared to the ordinary steel pipe 1, the steel pipe 1 with this structure is superior in both the diffusion rate and the diffusion range of the grout.

[0069] Further optimize the plan, referring to Figure 6 , Figure 7 The breakable structure includes two breakable plate groups, which are arranged vertically and connected to two oppositely arranged arc-shaped plates 21. The conical cylinder 14 is located between the two breakable plate groups. Each breakable plate group includes two oppositely arranged breakable plates 22, which are moved away from the breakage by the two arc-shaped plates 21.

[0070] When the steel pipe 1 is not used for grouting, the breakable plate 22 connects the two opposite grouting cylinders 18, so that the grouting cylinders 18 cannot or are not easily misaligned in the steel pipe 1. When grouting is used, the breakable plate 22 is pulled and broken by external force, releasing the two oppositely connected grouting cylinders 18.

[0071] The breakable plate 22 can be made of wood or plastic. It should have a certain hardness to connect the two pulp cylinders 18. At the same time, it should be easy to break under external force to disconnect the two pulp cylinders 18.

[0072] Reference Figure 8 , Figure 9 The method and steps for using a deep-hole grouting device for tunnels include:

[0073] S1. Drilling the grouting hole: Connect the drilling component to the output end of the drive device, start the drive device to drive the drilling component to drill a hole at the predetermined position. Connect the drill rod 6 to the rotary joint 5 on the rotary traveling drill 3, and drill the grouting hole through the drill rod 6.

[0074] S2. Seal the grouting hole: Remove the drilled parts and seal the grouting hole with cement. After the grouting hole is drilled, seal the open end of the grouting hole with cement and wait for the cement to solidify.

[0075] S3. Inserting the steel pipe 1: Open the cement-sealed grouting hole, replace the drilling component with the steel pipe 1, and start the drive device to push the steel pipe 1 into the grouting hole. Make a through hole in the cement seal for inserting the steel pipe 1, start the rotary drilling rig 3 to send the steel pipe 1 into the grouting hole. After insertion, fix the connecting sealing plate 8 to the cement seal with the first connecting bolt 10 to support the steel pipe 1 and seal the gaps.

[0076] S4. Start Grouting: Replace the steel perforated pipe 1 with a grouting component, start the drive device to push the grouting component into the steel perforated pipe 1, and start grouting. Start the rotary drilling rig 3 to send the grouting pipe 13 into the steel perforated pipe 1, and send the conical cylinder 14 on the grouting pipe 13 into the deepest part of the steel perforated pipe 1, so that all the grouting cylinders 18 extend out of the steel perforated pipe 1 and insert into the surrounding rock or soil. Then, staged grouting is carried out, that is, the grouting pipe 13 moves outward step by step to grout different locations in the surrounding rock or soil.

[0077] S5. Grouting complete: Remove the grouting component and reseal the grouting hole. After grouting is complete, remove the grouting pipe 13 and reseal the opening with cement.

[0078] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A deep-hole grouting device for tunnels, characterized in that: include, A driving device, wherein the rotating end of the driving device is connected to a drilling component or a steel pipe (1) or a grouting component, wherein the rotating end of the driving device is connected to the drilling component to drive the drilling component to rotate, the rotating end of the driving device is in contact with the steel pipe (1) to push the steel pipe (1) into the grouting hole, and the rotating end of the driving device is connected to the grouting component to push the grouting component into the steel pipe (1); The grout guide is corresponding to the grout outlet (2) of the steel flower pipe (1). The grout outlet end of the grout guide is flush with the outer wall of the steel flower pipe (1). The grout inlet end of the grout guide is located inside the steel flower pipe (1). The grout injection end of the grout injection component is used to squeeze the grout guide to extend out of the steel flower pipe (1). The breakable structure connects the grout guides in the two corresponding grout outlet holes (2) through the breakable structure, and the breakable structure separates the two grout guides by breaking at the grouting end of the grouting component; The driving device includes a rotary drilling rig (3), which is fixed on the top of the support frame (4). The output end of the rotary drilling rig (3) is connected to a rotary joint (5). The drilling component is a drill rod (6), and one end of the drill rod (6) is detachably connected to the rotary drilling rig (3) through the rotary joint (5). The grouting component includes a grouting pipe (13), the end of the grouting pipe (13) away from the rotary joint (5) is a conical cylinder (14), the end of the conical cylinder (14) away from the grouting pipe (13) is provided with a grout outlet (15), the grouting pipe (13) is connected to a grout supply tank (17) through a grout supply pipe (16), and the conical cylinder (14) is used to break the breakable structure and squeeze the grout guide component out of the steel flower pipe (1); The slurry guide includes a slurry tube (18) located inside the slurry outlet (2). The outer diameter of the slurry outlet end of the slurry tube (18) is adapted to the inner diameter of the slurry outlet (2). The outer diameter of the slurry inlet end of the slurry tube (18) is smaller than the outer diameter of the slurry outlet end of the slurry tube (18). A slurry channel (19) is provided inside the slurry tube (18). The inner diameter of the slurry outlet end of the slurry channel (19) is smaller than the inner diameter of the slurry inlet end of the slurry channel (19). An arc-shaped plate (21) is fixedly connected to the slurry inlet end of the slurry cylinder (18). The side of the arc-shaped plate (21) close to the inner wall of the steel flower pipe (1) is adapted to the inner wall of the steel flower pipe (1). The arc-shaped plate (21) is used to limit the slurry cylinder (18) and block the slurry outlet hole (2) of the steel flower pipe (1).

2. The tunnel deep-hole grouting device according to claim 1, characterized in that: The top of the support frame (4) is fixed with a slide rail (7). The steel pipe (1) and the grouting component are in contact with the rotary joint (5) through a first connector and a second connector, respectively. The first connector and the second connector are slidably connected to the slide rail (7), and the rotary joint (5) is used to push the steel pipe (1) and the grouting component to move horizontally.

3. The tunnel deep-hole grouting device according to claim 2, characterized in that: The first connector includes a connecting sealing plate (8) that passes through and is fixed to the end of the steel pipe (1). The bottom of the connecting sealing plate (8) is provided with a groove that is adapted to the slide rail (7). A first driving plate (9) is provided between the end of the steel pipe (1) and the rotary joint (5). The bottom of the first driving plate (9) is provided with another groove that is adapted to the slide rail (7). The rotary joint (5) contacts the first driving plate (9) and is used to push the first driving plate (9) to move. The first driving plate (9) is detachably connected to the connecting sealing plate (8) by multiple first connecting bolts (10). The connecting sealing plate (8) is used to seal the grouting hole. The second connecting member includes a connecting movable plate (11) that passes through and is fixed to the end of the grouting component. The bottom of the connecting movable plate (11) is provided with another sliding groove that is adapted to the slide rail (7). The first drive plate (9) is detachably connected to the connecting movable plate (11) by multiple second connecting bolts (12).

4. The tunnel deep-hole grouting device according to claim 1, characterized in that: The outer wall of the slurry cylinder (18) is provided with several grooves (20), and the slurry outlet end of the slurry cylinder (18) extends into the surrounding rock or soil through the grooves (20).

5. The tunnel deep-hole grouting device according to claim 1, characterized in that: The breakable structure includes two breakable plate groups, which are arranged vertically and connected to two oppositely arranged arc-shaped plates (21). The conical cylinder (14) is located between the two breakable plate groups. Each breakable plate group includes two oppositely arranged breakable plates (22), which are located away from the fracture area through the two arc-shaped plates (21).

6. The method of using the deep-hole grouting device for tunnels, as described in claim 1, is characterized in that: The usage steps include: S1. Opening grouting holes: Connect the drilling component to the output end of the drive device, start the drive device to drive the drilling component to drill a hole at the predetermined position. S2. Seal the grouting hole: Remove the drilled part and seal the grouting hole with cement; S3. Insert steel pipe (1): Open the cement-sealed grouting hole, replace the drilling part with steel pipe (1), and start the drive device to push the steel pipe (1) into the grouting hole. S4. Start grouting: Replace the steel pipe (1) with a grouting component, start the drive device to push the grouting component into the steel pipe (1), and start the grouting component to start grouting; S5. Grouting completed: Remove the grouting component and reseal the grouting hole.

Images