A deep-hole grouting reinforcement device for shield tunnels

Abstract

This invention belongs to the field of shield tunneling technology, specifically a deep-hole grouting reinforcement device for shield tunnels, comprising a steel casing and a grouting pipe; the grouting pipe runs through the interior of the steel casing; the top end of the grouting pipe is connected to the output end of a grouting pump; a conical pile block is fixedly connected to the bottom end of the steel casing; a grout outlet hole is opened on the lower side of the outer surface of the grouting pipe; and a grout outlet opening is opened on the outer surface of the steel casing. This invention solves the construction risk of surface reinforcement of tunnels affected by external conditions by grouting through the steel casing, compensates for the ground loss caused by shield tunneling, ensures the construction risk of shield tunnels passing under buildings and structures, and ensures the safety of buildings and structures; at the same time, the steel casing can be used to grout the surrounding soil at any burial depth, forming a miniature pile through the steel casing and the grouting area, which reinforces the shield tunnel and controls the settlement of tunnel segments.

Description

Technical Field

[0001] This invention belongs to the field of shield tunneling technology, specifically a deep hole grouting reinforcement device for shield tunnels. Background Technology

[0002] Currently, cable tunnels are generally located under urban roads. The main excavation methods for cables include open excavation, shallow buried tunneling, and pipe jacking. Due to the complex layout of municipal pipelines and high road costs, open excavation is only used on a small number of suburban roads. Pipe jacking is mainly used in soft soil. Shallow buried tunneling is widely used, but it is mainly done manually, requires waterless operation, and has a large surface settlement.

[0003] Due to factors such as soil loss and land compression deformation caused by shield tunneling, there are risks such as deformation and settlement of buildings and structures.

[0004] Conventional shield tunneling construction uses methods such as ground isolation pile protection and ground grouting reinforcement of building extrusion; however, these conventional methods are often constrained by external boundary conditions, such as underground pipelines, the planar relationship between the tunnel and buildings, site conditions, and ground traffic, which may prevent their implementation.

[0005] Therefore, the present invention provides a deep hole grouting reinforcement device for shield tunnels. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is as follows: A deep-hole grouting reinforcement device for shield tunnels, comprising a steel casing and a grouting pipe; the grouting pipe penetrates the interior of the steel casing; the top end of the grouting pipe is connected to the output end of a grouting pump; a conical pile block is fixedly connected to the bottom end of the steel casing; a grout outlet hole is opened on the lower side of the outer surface of the grouting pipe; a grout outlet opening is opened on the outer surface of the steel casing; multiple grout outlet openings are provided on the outer surface of the steel casing, and are symmetrically arranged on the outer surface of the steel casing; conventional shield tunneling construction uses methods such as ground isolation pile protection and ground grouting reinforcement of building extrusion; however, these conventional methods are often constrained by external boundary conditions, such as underground pipelines, the planar relationship between the tunnel and buildings, site conditions, and ground traffic, making them impractical; during operation, when grouting reinforcement is performed on the deep holes of the shield tunnel, workers first use an electric hammer to strike the concrete surface of the grouting hole to expose the grouting hole; then, the steel casing is inserted into the grouting hole, and a conical pile block is used to... The shaped pile blocks fix the steel casing at the bottom of the deep hole; the grouting pipe is extended to the bottom of the steel casing, so that the grout outlet at the bottom of the grouting pipe is at the same level as the grout outlet at the bottom of the steel casing. Then, the grout is pumped by the grouting pump along the grouting pipe, the grout outlet, and the grout outlet to the surrounding soil of the steel casing, forming a grouting zone; then, the workers raise the grouting pipe from bottom to top, grouting through the other grout outlets one by one, and finally grouting inside the steel casing to form a deep hole pile in the tunnel; after grouting is completed, the grouting pipe is removed. The invention uses a steel casing to inject grout from deep within the tunnel, thus mitigating the construction risks associated with surface reinforcement due to external conditions. It compensates for ground losses caused by shield tunneling, ensuring the safety of structures and mitigating construction risks when the shield tunnel passes under them. Simultaneously, the steel casing allows for grouting into the surrounding soil at any depth, forming a miniature pile through the casing and grouting area, reinforcing the shield tunnel and controlling tunnel segment settlement.

[0008] Preferably, the outer surface of the steel sleeve is rotatably connected to multiple deflection frames; each deflection frame includes a first deflection baffle and a second deflection baffle; each first deflection baffle and second deflection baffle has a V-shaped design; multiple first deflection baffles and second deflection baffles and grout outlets are arranged in a one-to-one correspondence; the outer surface of the steel sleeve is provided with a rotating shaft adapted to the first deflection baffles and second deflection baffles; during operation, in the initial state, the first deflection baffles and second deflection baffles are in an open or closed state. When the grout flows through the grouting pipe, grout outlet hole, and grout outlet to the space between the first deflection baffles and second deflection baffles, and when the pressure of the grout is greater than the pressure between the first deflection baffles and second deflection baffles, the first deflection baffles and second deflection baffles open, so that the grout flows to the grouting area at a high speed, thereby facilitating the complete filling of the surrounding soil and deep hole by the grout. At the same time, the multiple first deflection baffles and second deflection baffles are arranged to improve the strength of the entire formed pile body.

[0009] Preferably, a stirring rod is rotatably connected to the opposite surface of each of the first and second deflection baffles; a rotating shaft adapted to the stirring rod is provided on the outer surface of each of the first and second deflection baffles; a conical plate is fixedly connected to the lower surface of the stirring rod; during operation, when the slurry passes between the first and second deflection baffles, the stirring rod located on the opposite surface of the first and second deflection baffles will be subjected to impact force simultaneously, thereby causing the stirring rod to rotate at a certain angle. Then, under the action of the stirring rod and the conical plate, larger cement particles in the slurry can be broken up, avoiding voids in the formed slurry and resulting in low strength, which is beneficial to the formation of the slurry.

[0010] Preferably, a telescopic column is fixedly connected to the outer surface of the stirring rod; a tension spring is fixedly connected to the outer surface of the telescopic column; the outer surfaces of the first deflection baffle and the second deflection baffle are both provided with a closed seat adapted to the telescopic column; during operation, when the stirring rod rotates, the stirring rod will simultaneously drive the telescopic column on its surface to move, and the telescopic column pulls the tension spring to swing in an irregular state. Therefore, the stirring rod and the conical plate will swing in an irregular state, further crushing the cement particles in the slurry and improving the compactness of the slurry after it is formed.

[0011] Preferably, a counterweight ball is fixedly connected to the bottom end of the stirring rod; the presence of the counterweight ball helps to increase the shaking amplitude of the stirring rod, thereby improving the mixing of the slurry.

[0012] Preferably, a deflector block is fixedly connected to the outer surface of each of the first and second deflector baffles; multiple deflector blocks are provided and arranged in a linear array on the outer surface of the first and second deflector baffles; the deflector blocks on the outer surface of the first and second deflector baffles are beneficial to the strength of the slurry after molding, and thus facilitate the protection of the deep hole.

[0013] Preferably, a limiting seat is fixedly connected to the outer surface of the steel sleeve; multiple limiting seats are provided, and the grout outlets are arranged in a one-to-one correspondence; a through groove is opened on the outer surface of the limiting seat; a limiting post is fixedly connected to the outer surface of the first deflection baffle and the second deflection baffle; the side of the limiting post away from the first deflection baffle and the second deflection baffle passes through the interior of the through groove; the limiting post is provided to limit the position of the first deflection baffle and the second deflection baffle. In the initial state, when the interior of the first deflection baffle and the second deflection baffle is filled with grout, as the amount of grout increases, the first deflection baffle and the second deflection baffle deflect and press against the limiting post on one side, causing the limiting post to move closer to the through groove. Afterwards, when the grout pressure increases, the first deflection baffle and the second deflection baffle open, and the grout under pressure will rush to the side of the surrounding soil, which facilitates grouting of the deep hole.

[0014] Preferably, a positioning rod is fixedly connected to the outer surface of the steel sleeve and to one side of the limiting seat; a limiting spring is sleeved on the outer surface of the positioning rod; a positioning groove is opened on the upper side of the surface of the limiting post; during operation, in the initial state, the positioning rod is away from the positioning groove, and the limiting spring is in a charged state; during the movement of the limiting post, the positioning rod moves along the inclined surface of the limiting post. When the positioning groove moves to one side of the positioning rod, the limiting spring in the charged state is no longer compressed, so the limiting spring returns to its original position. The limiting spring drives the positioning rod to move to one side of the surrounding soil, so the positioning rod will be stuck into the surrounding soil, thus supporting and reinforcing the steel sleeve and improving the strength of the slurry after molding.

[0015] Preferably, the shape of the positioning rod is adapted to the shape of the positioning groove; the side of the positioning rod away from the steel sleeve is tapered; when the positioning rod extends out from the inside of the positioning groove, the tapered positioning rod will be stuck in the surrounding soil, so that the positioning rods on the left and right sides of the device will be stuck in the surrounding soil, making the whole device into multiple interlocking cross-shaped piles, which helps to improve the strength of the entire deep hole.

[0016] Preferably, the upper surface of the steel casing is provided with an installation groove; the lower surface of the steel casing is fixedly connected with an installation ring seat; the shapes of the installation groove and the installation ring seat are adapted to each other; an installation groove and an installation ring seat are provided on the upper and lower surfaces of each steel casing, and different steel casings can be installed by installing the installation ring seats of different steel casings in the installation groove, thereby increasing the length of the steel casing itself; thus facilitating grouting of deep holes in tunnels at different depths.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The shield tunnel deep-hole grouting reinforcement equipment of the present invention fixes the steel casing to the bottom of the deep hole using conical pile blocks; and extends the grouting pipe to the bottom of the steel casing, so that the grout outlet at the bottom of the grouting pipe is at the same horizontal level as the grout outlet at the lowest side of the steel casing. Then, the grout is pumped by a grouting pump along the grouting pipe, the grout outlet, and the grout outlet to the surrounding soil of the steel casing, forming a grouting zone; then, the workers raise the grouting pipe from bottom to top, grouting through the other grout outlets one by one, and finally grouting inside the steel casing to form the deep hole of the tunnel. The grouting pipe is removed after grouting is completed, and the grouting hole is sealed with cement. This invention uses a steel casing to grout from deep within the tunnel, solving the construction risk of surface reinforcement due to external conditions affecting the tunnel. It compensates for ground loss caused by shield tunneling, ensuring the safety of the shield tunnel when passing under buildings and structures. At the same time, the steel casing allows grouting into the surrounding soil at any depth, forming a miniature pile through the steel casing and grouting area, which reinforces the shield tunnel and controls the settlement of tunnel segments.

[0019] 2. The shield tunnel deep hole grouting reinforcement device of the present invention, wherein the first deflection baffle and the second deflection baffle are in an open and closed state, when the grout flows through the grouting pipe, the grout outlet hole and the grout outlet opening to the space between the first deflection baffle and the second deflection baffle, when the pressure of the grout is greater than the pressure between the first deflection baffle and the second deflection baffle, the first deflection baffle and the second deflection baffle open, so that the grout flows to the grouting area at a high speed, thereby facilitating the complete filling of the surrounding soil and the deep hole by the grout. At the same time, the multiple first deflection baffles and second deflection baffles are set to improve the strength of the entire formed pile body.

[0020] 3. The shield tunnel deep hole grouting reinforcement equipment of the present invention, during the movement of the limiting column, the positioning rod moves along the inclined surface of the limiting column. When the positioning groove moves to one side of the positioning rod, the limiting spring in the storage state is no longer squeezed, so the limiting spring returns. The limiting spring drives the positioning rod to move to one side of the surrounding soil, so the positioning rod will be stuck into the surrounding soil, thus supporting and reinforcing the steel sleeve and improving the strength of the grout after it is formed. Attached Figure Description

[0021] The invention will now be further described with reference to the accompanying drawings.

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is a schematic diagram of the steel casing and grouting pipe structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the working state of the steel sleeve in this invention;

[0025] Figure 4 This is a schematic diagram of the structure of the first deflection baffle and the second deflection baffle in this invention;

[0026] Figure 5 In this invention Figure 4 Enlarged view of the structure at point A;

[0027] Figure 6 This is a partial structural schematic diagram of the limiting seat in this invention;

[0028] Figure 7 This is a schematic diagram of the structure of the limiting seat and limiting post in this invention;

[0029] Figure 8 This is a schematic diagram of the mounting groove and mounting ring seat structure in this invention.

[0030] In the diagram: 1. Steel sleeve; 2. Grouting pipe; 21. Grout outlet hole; 3. Conical pile block; 4. Grout outlet opening; 5. Deflection frame; 51. First deflection baffle; 52. Second deflection baffle; 6. Stirring rod; 7. Conical plate; 8. Telescopic column; 9. Tension spring; 10. Counterweight ball; 11. Deflection block; 12. Limiting seat; 13. Penetrating groove; 14. Limiting column; 15. Positioning rod; 16. Limiting spring; 17. Positioning groove; 101. Installation groove; 102. Installation ring seat. Detailed Implementation

[0031] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0032] Example 1

[0033] like Figures 1 to 3As shown in the embodiment of the present invention, a deep-hole grouting reinforcement device for shield tunnels includes a steel casing 1 and a grouting pipe 2; the grouting pipe 2 penetrates the interior of the steel casing 1; the top end of the grouting pipe 2 is connected to the output end of the grouting pump; a conical pile block 3 is fixedly connected to the bottom end of the steel casing 1; a grout outlet hole 21 is opened on the lower side of the outer surface of the grouting pipe 2; a grout outlet opening 4 is opened on the outer surface of the steel casing 1; multiple grout outlet openings 4 are provided on the outer surface of the steel casing 1, and are symmetrically arranged on the outer surface of the steel casing 1; it should be noted that, in this embodiment of the present invention, Figure 3 "M" represents the tunnel grouting hole. Conventional shield tunneling construction uses methods such as ground isolation pile protection and ground grouting reinforcement of building extrusion. However, these conventional methods are often constrained by external boundary conditions, such as underground pipelines, the planar relationship between the tunnel and buildings, site conditions, and ground traffic. When grouting reinforcement is carried out on the deep holes of shield tunnels, workers first use an electric hammer to break up the concrete on the surface of the grouting hole, exposing the grouting hole. Then, a steel casing 1 is inserted into the grouting hole and fixed to the bottom of the deep hole by a conical pile block 3. The grouting pipe 2 is then extended to the bottom of the steel casing 1, so that the grout outlet 21 at the bottom of the grouting pipe 2 is at the same level as the grout outlet 4 at the bottom of the steel casing 1. Then, the grout is pumped along the grouting pipe 2 and the grout outlet 21 by a grouting pump. The grout outlet 4 flows into the surrounding soil of the steel casing 1, forming a grouting zone. Then, the workers raise the grouting pipe 2 from bottom to top and grout through the other grout outlets 4 one by one. Finally, grouting is carried out inside the steel casing 1, forming a deep-hole pile in the tunnel. After the grouting is completed, the grouting pipe 2 is removed and the grouting hole is sealed with cement. This invention solves the construction risk of surface reinforcement of the tunnel due to the influence of external conditions by grouting from the deep hole of the tunnel through the steel casing 1, compensates for the stratum loss caused by shield tunneling, ensures the construction risk of the shield tunnel passing under the building structure, and ensures the safety of the building structure. At the same time, the steel casing 1 can be used to grout the surrounding soil at any burial depth. A miniature pile is formed through the steel casing 1 and the grouting zone, which reinforces the shield tunnel and controls the settlement of the tunnel segments.

[0034] like Figures 1 to 4As shown, the outer surface of the steel sleeve 1 is rotatably connected to multiple deflection frames 5; each deflection frame 5 includes a first deflection baffle 51 and a second deflection baffle 52; each first deflection baffle 51 and second deflection baffle 52 is V-shaped; multiple first deflection baffles 51 and second deflection baffles 52 and the slurry outlet 4 are arranged in a one-to-one correspondence; the outer surface of the steel sleeve 1 is provided with a rotating shaft adapted to the first deflection baffle 51 and second deflection baffle 52; during operation, in the initial state, the first deflection baffle 51 and second deflection baffle 52 are... 2 is in a state of opening and closing. When the grout flows through the grouting pipe 2, the grout outlet 21 and the grout outlet 4 towards the space between the first deflection baffle 51 and the second deflection baffle 52, when the pressure of the grout is greater than the pressure between the first deflection baffle 51 and the second deflection baffle 52, the first deflection baffle 51 and the second deflection baffle 52 open, so that the grout will flow towards the grouting area at a higher speed, thus facilitating the complete filling of the surrounding soil and deep hole by the grout. At the same time, the multiple first deflection baffles 51 and second deflection baffles 52 are set to improve the strength of the entire formed pile body.

[0035] like Figures 4 to 5 As shown, each of the first deflection baffles 51 and the second deflection baffles 52 has a stirring rod 6 rotatably connected to its opposite surface; the outer surfaces of the first deflection baffles 51 and the second deflection baffles 52 are provided with a rotating shaft adapted to the stirring rod 6; a conical plate 7 is fixedly connected to the lower surface of the stirring rod 6; during operation, when the slurry passes between the first deflection baffles 51 and the second deflection baffles 52, the stirring rod 6 located on the opposite surface of the first deflection baffles 51 and the second deflection baffles 52 will be subjected to impact force at the same time, so that the stirring rod 6 will rotate at a certain angle. Then, with the action of the stirring rod 6 and the conical plate 7, the larger cement particles in the slurry can be broken up, avoiding voids between the formed slurry, which would result in low strength, and is beneficial to the formation of the slurry.

[0036] The outer surface of the stirring rod 6 is fixedly connected to a telescopic column 8; the outer surface of the telescopic column 8 is fixedly connected to a tension spring 9; the outer surfaces of the first deflection baffle 51 and the second deflection baffle 52 are both provided with closed seats adapted to the telescopic column 8; during operation, when the stirring rod 6 rotates, the stirring rod 6 will simultaneously drive the telescopic column 8 on its surface to move, and the telescopic column 8 pulls the tension spring 9 to swing in an irregular state. Therefore, the stirring rod 6 and the conical plate 7 will swing in an irregular state, further crushing the cement particles in the slurry and improving the compactness of the slurry after it is formed.

[0037] The bottom end of the stirring rod 6 is fixedly connected to a counterweight ball 10, the diameter of which is larger than the width of the stirring rod 6. When the stirring rod 6 rotates, under the action of the counterweight ball 10, the stirring rod 6 will rotate in an irregular state, which helps to increase the shaking amplitude of the stirring rod 6 and thus improves the mixing of the slurry.

[0038] Each of the first deflection baffles 51 and the second deflection baffles 52 has a deflection block 11 fixedly connected to its outer surface. Multiple deflection blocks 11 are provided and arranged in a linear array on the outer surfaces of the first deflection baffles 51 and the second deflection baffles 52. When the grout enters the surrounding soil and the periphery of the first deflection baffles 51 and the second deflection baffles 52, the conical surface of the deflection block 11 will puncture the air bubbles in the grout, which is beneficial to the strength of the grout after it is formed and avoids the phenomenon of voids in the grout due to too many air bubbles. This facilitates the protection of the deep holes in the tunnel.

[0039] like Figures 6 to 7 As shown, a limiting seat 12 is fixedly connected to the outer surface of the steel sleeve 1; multiple limiting seats 12 are provided, and they are arranged in a one-to-one correspondence with the slurry outlet openings 4; a through groove 13 is formed on the outer surface of the limiting seat 12; a limiting post 14 is fixedly connected to the outer surface of both the first deflection baffle 51 and the second deflection baffle 52; the side of the limiting post 14 away from the first deflection baffle 51 and the second deflection baffle 52 passes through the interior of the through groove 13; the limiting post 14 is provided to limit the first deflection baffle 51 and the second deflection baffle 52. The position of the second deflection baffle 52 is limited. In the initial state, when the interior of the first deflection baffle 51 and the second deflection baffle 52 is filled with grout, as the amount of grout increases, the first deflection baffle 51 and the second deflection baffle 52 deflect and press against the limiting post 14 on one side, causing the limiting post 14 to move closer to the penetration groove 13. Afterwards, when the grout pressure increases, the first deflection baffle 51 and the second deflection baffle 52 open, and the grout under pressure will rush to the surrounding soil side, which facilitates grouting of the deep hole.

[0040] A positioning rod 15 is fixedly connected to the outer surface of the steel sleeve 1 and to one side of the limiting seat 12; a limiting spring 16 is sleeved on the outer surface of the positioning rod 15; a positioning groove 17 is opened on the upper side of the surface of the limiting post 14; during operation, in the initial state, the positioning rod 15 is away from the side of the positioning groove 17, and the limiting spring 16 is in a pressurized state; during the movement of the limiting post 14, the positioning rod 15 moves along the inclined surface of the limiting post 14. When the positioning groove 17 moves to the side of the positioning rod 15, the limiting spring 16, which is in a pressurized state, is no longer compressed, so the limiting spring 16 returns to its original position. The limiting spring 16 drives the positioning rod 15 to move to one side of the surrounding soil, so the positioning rod 15 will be stuck into the interior of the surrounding soil, thus supporting and reinforcing the steel sleeve 1 and improving the strength of the slurry after molding.

[0041] The shape of the positioning rod 15 is adapted to the shape of the positioning groove 17; the side of the positioning rod 15 away from the steel sleeve 1 is tapered; when the positioning rod 15 extends out of the inside of the positioning groove 17, the tapered positioning rod 15 will be stuck in the inside of the surrounding soil, so that the positioning rods 15 on the left and right sides of this device will be stuck in the inside of the surrounding soil, making the whole device into multiple interlocking cross-shaped piles, which helps to improve the strength of the entire deep hole.

[0042] Example 2

[0043] like Figure 8 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: the upper surface of the steel sleeve 1 is provided with an installation groove 101; the lower surface of the steel sleeve 1 is fixedly connected with an installation ring seat 102; the shapes of the installation groove 101 and the installation ring seat 102 are adapted to each other; an installation groove 101 and an installation ring seat 102 are provided on the upper and lower surfaces of each steel sleeve 1. By installing the installation ring seats 102 of different steel sleeves 1 in the installation groove 101, different steel sleeves 1 can be installed, increasing the length of the steel sleeve 1 itself; thereby facilitating grouting of deep holes in tunnels at different depths.

[0044] During operation, when grouting and reinforcing the deep holes of a shield tunnel, workers first use an electric hammer to break up the concrete on the surface of the grouting hole, exposing it. Then, a steel casing 1 is inserted into the grouting hole and fixed to the bottom of the deep hole using a conical pile block 3. The grouting pipe 2 is then extended to the bottom of the steel casing 1, ensuring that the grout outlet 21 at the bottom of the grouting pipe 2 is at the same horizontal level as the grout outlet 4 at the bottom of the steel casing 1. Finally, a grouting pump is used to pump grout along the grouting pipe 2 and... Grout outlet 21 and grout outlet 4 flow into the surrounding soil of steel casing 1, forming a grouting zone. Then, workers raise grouting pipe 2 from bottom to top, grouting through other grout outlets 4 one by one, finally grouting inside steel casing 1 to form a deep-hole pile in the tunnel. After grouting is completed, grouting pipe 2 is removed, and the grouting holes are sealed with cement. This invention, through grouting from deep-hole tunnels using steel casing 1, solves the construction risks associated with surface reinforcement work in tunnels affected by external conditions. The method compensates for ground losses caused by shield tunneling, ensuring the safety of buildings and structures during construction and mitigating construction risks. Simultaneously, the steel casing 1 allows for grouting into the surrounding soil at any depth, forming a miniature pile through the casing 1 and the grouting area, reinforcing the shield tunnel and controlling tunnel segment settlement. Initially, the first deflection baffle 51 and the second deflection baffle 52 are in a closed state. When grout flows through the grouting pipe 2, grout outlet 21, and grout outlet 4 towards the area between the first deflection baffle 51 and the second deflection baffle 52, and the grout pressure exceeds the pressure between them, the baffles open, allowing the grout to flow at a higher speed into the grouting area. This facilitates complete filling of the surrounding soil and deep holes. The multiple first deflection baffles 51 and second deflection baffles 52 also contribute to increasing the overall strength of the formed pile.

[0045] When the slurry passes between the first deflection baffle 51 and the second deflection baffle 52, the stirring rod 6, located on the opposite side of the first deflection baffle 51 and the second deflection baffle 52, will be simultaneously subjected to an impact force, causing the stirring rod 6 to rotate at a certain angle. Then, in conjunction with the action of the stirring rod 6 and the conical plate 7, larger cement particles in the slurry can be broken up, preventing voids from appearing in the formed slurry and causing low strength, thus facilitating the formation of the slurry. When the stirring rod 6 rotates, it simultaneously drives the telescopic column 8 on its surface to move, causing the telescopic column 8 to pull the tension spring 9 in an irregular swinging motion. The stirring rod 6 and the conical plate 7 move irregularly, further crushing the cement particles in the slurry and improving the compactness of the slurry after molding. Deflecting blocks 11 are provided on the outer surfaces of the first deflecting baffle 51 and the second deflecting baffle 52, which is beneficial to the strength of the slurry after molding and thus facilitates the protection of the deep hole. A limiting post 14 is provided to limit the position of the first deflecting baffle 51 and the second deflecting baffle 52. Initially, when the interior of the first deflecting baffle 51 and the second deflecting baffle 52 is filled with slurry, as the amount of slurry increases, the first deflecting baffle 51 and the second deflecting baffle 52 will... The second deflection baffle 52 deflects and presses against the limiting post 14 on one side, causing the limiting post 14 to move closer to the penetration groove 13. Then, when the grout pressure increases, the first deflection baffle 51 and the second deflection baffle 52 open, and the pressurized grout rushes towards the surrounding soil, facilitating grouting of the deep hole. Initially, the positioning rod 15 is away from the positioning groove 17, and the limiting spring 16 is in a charged state. During the movement of the limiting post 14, the positioning rod 15 moves along the inclined surface of the limiting post 14. When the positioning groove 17 moves to the side of the positioning rod 15, the charged limiting spring... Spring 16 is no longer compressed, so the limiting spring 16 returns to its original position. The limiting spring 16 drives the positioning rod 15 to move to one side of the surrounding soil. Therefore, the positioning rod 15 will be stuck inside the surrounding soil, which supports and reinforces the steel sleeve 1, improving the strength of the grout after molding. The conical positioning rod 15 is conducive to being stuck inside the surrounding soil. An installation groove 101 and an installation ring seat 102 are provided on the upper and lower surfaces of each steel sleeve 1. By installing the installation ring seat 102 of different steel sleeves 1 in the installation groove 101, different steel sleeves 1 can be installed, which facilitates grouting of deep holes in tunnels at different depths.

[0046] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0047] It should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] 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 the present invention is defined by the appended claims and their equivalents.

Claims

1. A shield tunnel deep hole grouting reinforcement equipment, comprising a steel casing pipe (1) and a grouting pipe (2); characterized in that: The grouting pipe (2) is through in the inside of the steel sleeve pipe (1); The top end of the grouting pipe (2) is connected with the output end of the grouting pump; The bottom end of the steel sleeve pipe (1) is fixedly connected with the tapered pile block (3); The outer surface of the grouting pipe (2) is provided with the grouting hole (21) on the lower side; The outer surface of the steel sleeve pipe (1) is provided with the grouting opening (4); The grouting opening (4) is provided with multiple on the outer surface of the steel sleeve pipe (1), and is symmetrically provided on the outer surface of the steel sleeve pipe (1). The outer surface of the steel sleeve pipe (1) is rotatably connected with multiple deflection frames (5); Single deflection frame (5) includes first deflection baffle (51) and second deflection baffle (52); Single first deflection baffle (51) and second deflection baffle (52) are designed as V type; Multiple first deflection baffle (51) and second deflection baffle (52) and grouting opening (4) are one-to-one corresponding; The outer surface of the steel sleeve pipe (1) is provided with a rotating shaft matched with the first deflection baffle (51) and the second deflection baffle (52); The opposite surface of each first deflection baffle (51) and second deflection baffle (52) is rotatably connected with an agitating rod (6); The outer surface of the first deflection baffle (51) and the second deflection baffle (52) is provided with a rotating shaft matched with the agitating rod (6); The lower surface of the agitating rod (6) is fixedly connected with a tapered sheet (7); The outer surface of the agitating rod (6) is fixedly connected with a telescopic column (8); The outer surface of the telescopic column (8) is fixedly connected with a tension spring (9); The outer surface of the first deflection baffle (51) and the second deflection baffle (52) is provided with a closed seat matched with the telescopic column (8).

2. The shield tunnel deep hole grouting reinforcement equipment according to claim 1, characterized in that: The bottom end of the agitating rod (6) is fixedly connected with a counterweight ball (10); The diameter of the counterweight ball (10) is greater than the width of the agitating rod (6).

3. The shield tunnel deep hole grouting reinforcement equipment according to claim 1, characterized in that: The outer surface of each first deflection baffle (51) and second deflection baffle (52) is fixedly connected with a deflection block (11); Multiple deflection blocks (11) are arranged in linear array on the outer surface of the first deflection baffle (51) and the second deflection baffle (52); The cross section of the deflection block (11) is angular.

4. The shield tunnel deep hole grouting reinforcement equipment according to claim 1, characterized in that: The outer surface of the steel sleeve pipe (1) is fixedly connected with a limiting seat (12); Multiple limiting seats (12) are arranged in one-to-one correspondence with the grouting openings (4); The outer surface of the limiting seat (12) is provided with a penetrating groove (13); The outer surface of the first deflection baffle (51) and the second deflection baffle (52) is fixedly connected with a limiting column (14); The side of the limiting column (14) away from the first deflection baffle (51) and the second deflection baffle (52) penetrates into the inside of the penetrating groove (13).

5. The shield tunnel deep hole grouting reinforcement equipment according to claim 4, characterized in that: The outer surface of the steel sleeve pipe (1) and on one side of the limiting seat (12) is fixedly connected with a positioning rod (15); The outer surface of the positioning rod (15) is sleeved with a limiting spring (16); The surface of the limiting column (14) is provided with a positioning groove (17) on the upper side.

6. The shield tunnel deep hole grouting reinforcement equipment according to claim 5, characterized in that: The shape of the positioning rod (15) is matched with the shape of the positioning groove (17); the shape of the positioning rod (15) far away from the steel casing (1) is conical.

7. The shield tunnel deep hole grouting reinforcement equipment according to claim 1, characterized in that: The upper surface of the steel casing (1) is provided with a mounting groove (101); the lower surface of the steel casing (1) is fixedly connected with a mounting ring seat (102); the shape of the mounting groove (101) is matched with the shape of the mounting ring seat (102).

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