Water-rich tunnel grouting reinforcement device and construction method

Abstract

The application relates to a water-rich tunnel grouting reinforcing device and a construction method, and belongs to the technical field of tunnel construction. The device comprises an arc-shaped mounting rack, the mounting rack is located in front of a grouting stopping wall, the mounting rack is consistent with the arc of the tunnel, a mounting plate is slidably arranged on the mounting rack, the mounting plate slides along the contour of the mounting rack, a grouting guide pipe is slidably arranged on the mounting plate, the sliding direction of the grouting guide pipe is perpendicular to the plate surface of the mounting plate, and a driving device for driving the grouting guide pipe to slide and be fixed on the grouting pipe is arranged on the mounting plate. The application has the effect of improving grouting efficiency.

Description

Technical Field

[0001] This application relates to the field of tunnel construction technology, and in particular to a grouting reinforcement device and construction method for water-rich tunnels. Background Technology

[0002] Tunnels are engineering structures buried underground, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels. With the rapid development of infrastructure construction in China and the large-scale construction of long-distance rock jacking projects, it is inevitable to encounter tunnels traversing fault fracture zones. The terrain where these tunnels cross fault fracture zones is typically characterized by areas prone to surface water accumulation. Furthermore, the rock mass within these fault fracture zones is inherently poor, exhibiting characteristics such as fractured rock, low compressive and shear strength, lack of self-stabilizing ability, and high water content, all of which contribute to the high risks associated with long-distance rock jacking through these zones.

[0003] Currently, grouting reinforcement is commonly used in the construction of water-rich tunnels. The grouting reinforcement construction process is as follows: First, a guide arch frame is installed. The guide arch frame is generally an arc-shaped I-beam, which supports the tunnel top and fits against the tunnel face. Then, drilling is carried out. During the drilling process, the guide arch frame is positioned first, and then a drilling machine is used to drill holes at the positioning points. The drilling direction is inclined and towards the tunnel top, with a distance of about 30 cm between the holes. After that, the hole is cleaned, and then the grouting pipe is pushed forward. The grouting pipe is coaxially placed inside the hole. Then, the hole is sealed, and a grout stop valve is installed on the grouting pipe. Next, the grout stop wall is poured. The thickness of the grout stop wall is about 20 cm. The grout stop wall is poured at the tunnel face, and the guide arch frame is poured inside the grout stop wall. The grout stop valve is located outside the grout stop wall. The grouting conduit is connected to the grouting pipe, and then the grout is sent into the hole. The grout reinforces the tunnel.

[0004] Then, during grouting, because the grouting pipe is close to the top of the tunnel, it is difficult to connect the grouting conduit and the grouting pipe, which affects the grouting efficiency. Summary of the Invention

[0005] To improve grouting efficiency, this application provides a grouting reinforcement device and construction method for water-rich tunnels. Firstly, this application provides a grouting reinforcement device for water-rich tunnels, which adopts the following technical solution: A grouting reinforcement device for water-rich tunnels includes an arc-shaped mounting frame located in front of a grout-stopping wall. The mounting frame has the same curvature as the tunnel. An mounting plate is slidably mounted on the mounting frame, sliding along the contour of the mounting frame. A grouting conduit is slidably mounted on the mounting plate, with the sliding direction of the grouting conduit perpendicular to the surface of the mounting plate. A driving device is provided on the mounting plate for driving the grouting conduit to slide and be fixed to the grouting pipe.

[0006] Optionally, the grouting conduit and the grouting pipe have the same diameter. The driving device includes a first driving component for driving the grouting conduit to slide against the port of the grouting pipe. A locking nut is rotatably provided on the grouting conduit, and the rotation axis of the locking nut is coaxial with the axis of the grouting conduit. A threaded section for threaded connection of the locking nut is provided on the peripheral wall of the grouting pipe. The driving device further includes a second driving component for driving the locking nut to rotate and be threadedly connected to the threaded section of the grouting pipe. Optionally, the mounting plate includes a sliding plate slidably mounted on the mounting frame and a rotating plate mounted on the sliding plate. The rotating plate is rotatably mounted on the sliding plate, and the rotation axis of the rotating plate is parallel to the grout-stop wall and parallel to the sliding direction of the sliding plate. The grouting conduit is slidably mounted on the rotating plate. A third driving component for driving the rotating plate to rotate is provided on the sliding plate. The rotating plate is a telescopic plate, and the grouting conduit is located on the telescopic plate of the rotating plate. Optionally, the mounting frame is provided with a mounting rod, which is horizontal and located on the side of the mounting frame away from the grout stop wall. The grouting conduit is located between the mounting rod and the grout stop wall. The mounting rod is slidably provided with a ladder, which slides along the length of the mounting rod and is obliquely supported on the tunnel floor.

[0007] Optionally, both ends of the mounting rod are slidably mounted on the mounting frame, and a disc is fixedly mounted on the end of the mounting rod facing the mounting frame. The disc is slidably engaged with the mounting frame. The mounting rod is a telescopic rod, and the reinforcement device also includes a fixing component for fixing the mounting rod to the slidable position.

[0008] Optionally, the ladder includes multiple ladder units, which are arranged to overlap each other. The ladder units located away from the grout stop wall are slidably mounted on the mounting rod, and adjacent ladder units are slidably mounted relative to each other. The ladder units slide along a direction perpendicular to the length of the mounting rod, and the ladder units close to the grout stop wall are fixedly mounted at the bottom of the tunnel.

[0009] Optionally, a fixing plate is hinged to the bottom of the escalator unit near the grout stop wall. The rotation axis of the fixing plate is parallel to the bottom of the tunnel, and a first screw is threaded onto the fixing plate.

[0010] Optionally, the escalator unit is provided with a slider and a groove for sliding engagement on the side near the grout stop wall and the side away from the grout stop wall, respectively. The escalator unit is also threaded with bolts, which are used to abut against the slider of the adjacent escalator unit.

[0011] Optionally, a sleeve is fixedly provided at the end of the escalator unit located away from the grout-stopping wall, and the sleeve is sleeved on the mounting rod.

[0012] Secondly, this application provides a grouting reinforcement construction method for water-rich tunnels, adopting the following technical solution: Optionally, a method for grouting reinforcement of water-rich tunnels, using a water-rich tunnel grouting reinforcement device, further includes; S1: After the grout-stopping wall reaches the design strength, fix the mounting bracket in front of the grout-stopping wall, and then connect the grouting pipe to the delivery pump; S2: Slide the sliding plate, the sliding plate drives the grouting guide to align with the grouting pipe, the grouting guide slides so that the opening of the grouting pipe abuts against the locking nut, then turn the locking nut to connect the grouting guide and the grouting pipe; S3: Adjust the height of the installation rod, rotate the ladder to a suitable tilt angle, and then fix the height of the ladder; adjust the height of the installation rod so that the construction worker can open the top grout stop valve while standing on the ladder; S4: Then carry out grouting operation. After grouting is completed, manually close the grout stop valve, then slide the slide plate to move the grouting pipe to the next grouting pipe, and repeat step S2 to complete the water-stopping grouting operation.

[0013] In summary, this application includes at least one of the following beneficial technical effects: 1. After the grout-stopping wall reaches its design strength, the mounting frame is installed in front of the grout-stopping wall. Then, the grouting conduit is connected to the mounting plate. The mounting plate is then slid, which moves the grouting conduit. When the grouting conduit is aligned with the grouting pipe, the driving device drives the grouting conduit to slide and abut against the end of the grouting pipe, and the grouting conduit is fixed to the grouting pipe. Then, the grout is introduced into the grouting pipe through the grouting conduit. The grout in the grouting pipe is injected into the soil through the grout outlet to reinforce the tunnel. The mounting plate is then slid to change the position of the grouting conduit to perform grouting operations on adjacent grouting pipes. Adjusting the position of the grouting conduit by sliding the mounting plate facilitates the connection between the grouting conduit and the grouting pipe, thereby reducing the process of connecting the grouting conduit and the grouting pipe by construction personnel and improving grouting efficiency. 2. When the grouting conduit is difficult to align with the grouting pipe, the angle of the rotating plate is adjusted by the third driving component, and the length of the rotating plate is also adjusted to facilitate the alignment of the grouting conduit with the grouting pipe, thereby facilitating the delivery of grout and further improving the grouting efficiency; 3. When the grouting conduit can no longer be aligned with the grouting pipe, the ladder is diagonally braced on the ground, and the support rod is fixed to the installation frame. Then, the construction workers stand on the ladder and adjust the direction of the grouting conduit so that it is aligned with the grouting pipe. In the above process, the installation frame supports the grouting conduit, reducing the workload of the construction workers and making it easier for the grouting conduit to be aligned with the grouting pipe. Furthermore, the ladder diagonally supports the installation frame, reducing the possibility of the installation frame tilting and collapsing, and improving the safety and efficiency of grouting. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a grouting reinforcement device for water-rich tunnels according to an embodiment of this application; Figure 2 This is a schematic diagram of the mounting frame in a grouting reinforcement device for a water-rich tunnel according to an embodiment of this application; Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 This is a schematic diagram of the mounting plate in a grouting reinforcement device for a water-rich tunnel according to an embodiment of this application; Figure 5 yes Figure 4 Enlarged schematic diagram of part B in the middle; Figure 6 This is a schematic diagram of the ladder structure in a grouting reinforcement device for a water-rich tunnel according to an embodiment of this application; Figure 7 yes Figure 2 An enlarged schematic diagram of section C.

[0015] Explanation of reference numerals in the attached drawings: 1. Mounting bracket; 111. Frame rod; 112. Mounting slot; 113. Connecting rod; 2. Grout-stopping wall; 3. Mounting plate; 31. Slide plate; 32. Rotating plate; 321. Sleeve plate; 322. Telescopic plate; 33. Hinge shaft; 34. Third motor; 35. Worm gear; 36. Worm wheel; 4. Grouting conduit; 5. Grouting pipe; 6. Drive wheel; 7. Drive unit; 71. First electric push rod; 72. Locking nut; 73. Second motor; 74. Locking wheel; 8. Install the rod; 9. Ladder; 91. Escalator unit; 10. Sleeve; 11. Disc; 12. T-slot; 13. Second screw; 14. Positioning hole; 15. Slide groove; 16. Bolt; 17. Fixing plate; 18. First screw. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0017] This application discloses a grouting reinforcement device for water-rich tunnels. (Refer to...) Figure 1 and Figure 2 The grouting reinforcement device for water-rich tunnels includes an arc-shaped mounting frame 1, located in front of the grout-stopping wall 2. The mounting frame 1 conforms to the curvature of the tunnel. In this embodiment, the mounting frame 1 includes two parallel frame rods 111, each with a rectangular cross-section. Figure 3 Two frame rods 111 are arranged along the length of the tunnel. Each of the two frame rods 111 has a mounting groove 112 on its facing surfaces. The mounting grooves 112 are opened along the length of the frame rods 111, and their openings face each other. The mounting frame 1 also includes multiple connecting rods 113 disposed between the two frames. The connecting rods 113 are parallel to each other and parallel to the length of the tunnel. In other embodiments, the connecting rods 113 can be replaced with connecting plates. The connecting plates are arc-shaped and located between the two frame rods 111, and are integrally formed on the frame rods 111. Reference Figure 4 and Figure 5 A mounting plate 3 is slidably mounted on the mounting frame 1. The mounting plate 3 slides along the contour of the mounting frame 1. The mounting plate 3 is an arc-shaped plate. Both sides of the mounting plate 3 are slidably engaged in the mounting groove 112. The thickness of the mounting plate 3 is less than the width of the mounting groove 112, and the length is equal to the distance between the bottoms of the two mounting grooves 112. A grouting conduit 4 is slidably mounted on the mounting plate 3. The sliding direction of the grouting conduit 4 is perpendicular to the surface of the mounting plate 3. A driving device 7 is provided on the mounting plate 3 to drive the grouting conduit 4 to slide and fix it on the grouting pipe 5.

[0018] Reference Figure 4 and Figure 5 In this embodiment, a first motor is embedded in the mounting plate 3. The length direction of the output shaft of the first motor is parallel to the length direction of the tunnel. A drive wheel 6 is coaxially mounted on the output shaft of the first motor. The drive wheel 6 abuts against the side wall of the mounting groove 112. When the first motor is started, it drives the drive wheel 6 to rotate. The rotation of the drive wheel 6 causes the mounting plate 3 to slide in the sliding groove 15, so that the grouting conduit 4 is aligned with the grouting pipe 5. Then the grouting conduit 4 is fixed on the grouting pipe 5, completing the connection between the grouting conduit 4 and the grouting pipe 5. Grouting operation is then carried out. The operation is simple and convenient.

[0019] Reference Figure 4 and Figure 5In this embodiment, the grouting conduit 4 and the grouting pipe 5 have the same diameter. The driving device 7 includes a first driving member for driving the grouting conduit 4 to slide against the port of the grouting pipe 5. The first driving member includes a first electric push rod 71 fixedly mounted on the mounting plate 3. The length direction of the first electric push rod 71 is parallel to the length direction of the grouting pipe 5. The grouting conduit 4 is fixedly mounted on the output shaft of the first electric push rod 71. When the first electric push rod 71 is activated, it pushes the grouting conduit 4 to slide, so that the grouting conduit 4 abuts against the port of the grouting pipe 5. Reference Figure 4 and Figure 5 In this embodiment of the application, a rubber ring is provided on the end face of the grouting conduit 4.

[0020] Reference Figure 4 and Figure 5 To facilitate locking the grouting conduit 4 and the grouting pipe 5, a locking nut 72 is rotatably mounted on the grouting conduit 4. The outer contour of the locking nut 72 is circular, and the rotation axis of the locking nut 72 is coaxial with the axis of the grouting conduit 4. A threaded section for threaded connection of the locking nut 72 is provided on the peripheral wall of the grouting pipe 5. The driving device 7 also includes a second driving component for driving the locking nut 72 to rotate and be threadedly connected to the threaded section of the grouting pipe 5. The second driving component includes a second motor 73 mounted on the mounting plate 3. The length direction of the output shaft of the second motor 73 is parallel to the length direction of the grouting conduit 4. A locking wheel 74 is coaxially mounted on the output shaft of the second motor 73 and abuts against the peripheral wall of the locking nut 72. When the second motor 73 is started, it drives the locking wheel 74 to rotate. The locking wheel 74 rotates and is threadedly connected to the threaded section. At this time, the distance between the grouting conduit 4 and the grouting pipe 5 gradually decreases and they move closer to each other, compressing the rubber ring and thus fixing the grouting conduit 4 to the grouting pipe 5. The operation is simple and convenient.

[0021] Reference Figure 4 and Figure 5To facilitate adjustment of the angle of the mounting plate 3 so that the grouting conduit 4 is aligned with the grouting pipe 5, the mounting plate 3 includes a sliding plate 31 slidably mounted on the mounting frame 1 and a rotating plate 32 mounted on the sliding plate 31. The sliding plate 31 is located within the mounting groove 112, and the rotating plate 32 is rotatably mounted on the sliding plate 31. The rotation axis of the rotating plate 32 is parallel to the grout-stopping wall 2 and parallel to the sliding direction of the sliding plate 31. Furthermore, a hinge shaft 33 is rotatably mounted on the sliding plate 31, and the rotating plate 32 is fixedly mounted on the hinge shaft 33. The grouting conduit 4 is slidably mounted on the rotating plate 32, and the sliding plate 31 is provided with a drive mechanism. The third driving component for rotating the rotating plate 32 includes a third motor 34 mounted on the slide plate 31. A worm gear 35 is coaxially mounted on the output shaft of the third motor 34, and a worm wheel 36 meshing with the worm gear 35 is sleeved on the hinge shaft 33. When adjusting the angle of the mounting plate 3, the third motor 34 is started, which drives the worm gear 35 to rotate. The rotation of the worm gear 35 drives the worm wheel 36 to rotate, which in turn drives the hinge shaft 33 to rotate, thereby driving the rotating plate 32 to rotate, thus adjusting the direction of the grouting conduit 4; and fixing the rotated rotating plate 32 at the rotated angle.

[0022] Reference Figure 4 and Figure 5 To improve the position adjustment range of the grouting conduit 4, the rotating plate 32 is a telescopic plate 322. The grouting conduit 4 is located on the telescopic plate 322 of the rotating plate 32. The rotating plate 32 includes a sleeve plate 321 fixedly mounted on the hinge shaft 33 and a telescopic plate 322 slidably sleeved in the sleeve plate 321. A cavity for the sleeve plate 321 to slide is opened in the telescopic plate 322. A second electric push rod is fixedly mounted in the telescopic plate 322. The length direction of the output shaft of the second electric push rod is parallel to the sliding direction of the telescopic plate 322. The sleeve plate 321 is fixedly mounted on the output shaft of the second electric push rod. Furthermore, the first electric push rod 71 and the second motor 73 are both located on the telescopic plate 322. When the second electric push rod is activated, the second electric push rod drives the telescopic plate 322 to slide, thereby adjusting the position of the grouting conduit 4 to facilitate the alignment of the grouting conduit 4 with the grouting pipe 5.

[0023] Reference Figure 2 , Figure 6 and Figure 7To facilitate the opening of the grout stop valve on the grouting pipe 5, an installation rod 8 is provided on the mounting frame 1. The installation rod 8 is horizontal and located on the side of the mounting frame 1 away from the grout stop wall 2. The grouting conduit 4 is located between the installation rod 8 and the grout stop wall 2. A ladder 9 is slidably provided on the installation rod 8. The ladder 9 slides along the length of the installation rod 8 and is obliquely supported on the tunnel ground. In this embodiment, a sleeve 10 is fixedly provided at the top of the ladder 9 and sleeved on the installation rod 8. When opening or closing the grout stop valve, the ladder 9 is slid to the bottom of the corresponding grout stop valve and then the ladder 9 is obliquely supported on the ground. Then, the construction personnel stand on the ladder 9 to open or close the grout stop valve.

[0024] Reference Figure 2 , Figure 6 and Figure 7 To make the ladder 9 suitable for construction workers, both ends of the mounting rod 8 are slidably mounted on the mounting frame 1. A disc 11 is fixedly mounted on the end of the mounting rod 8 facing the mounting frame 1. A T-shaped groove 12 is opened on the frame rod 111 away from the grout stop wall 2. The disc 11 is slidably engaged in the T-shaped groove 12. The mounting rod 8 is a telescopic rod. The reinforcement device also includes a fixing component for fixing the mounting rod 8 to the slidable position. In this embodiment, the fixing component includes a second screw 13 threadedly connected to the mounting rod 8. A plurality of positioning holes 14 are opened on the frame rod 111. The positioning holes 14 are evenly arranged along the length direction of the frame rod 111 and are located on one side of the T-shaped groove 12. The mounting rod 8 is slidable to adjust its height. When the height of the mounting rod 8 is adjusted to a suitable height, the second screw 13 is rotated and enters the positioning hole 14, thereby fixing the mounting rod 8 at the above position. The operation is simple and convenient.

[0025] Reference Figure 2 , Figure 6 and Figure 7To facilitate the extension of the ladder 9 to the ground, the ladder 9 includes multiple ladder units 91, which are arranged overlapping each other. The ladder unit 91 located away from the grout-stopping wall 2 is slidably mounted on the mounting rod 8. Furthermore, the sleeve 10 is fixedly mounted on the ladder unit 91 away from the grout-stopping wall 2. Adjacent ladder units 91 are slidably arranged relative to each other. The ladder unit 91 slides along a direction perpendicular to the length of the mounting rod 8. The surface of the ladder unit 91 near the grout-stopping wall 2 and the surface away from the grout-stopping wall 2 are respectively provided with a slider and a sliding groove 15 for the slider to slide and engage. The length direction of the sliding groove 15 is parallel to the ladder unit 91. Along the length of 1, the escalator unit 91 is also threaded with bolts 16, which are used to abut against the slider of the adjacent escalator unit 91. After the position of the mounting rod 8 is adjusted to the required position, the escalator unit 91 slides towards the ground under the action of gravity. The escalator unit 91 near the grout stop surface is supported on the ground. Then, the bolts 16 are rotated so that the bolts 16 abut against the slider of the adjacent escalator unit 91, thereby fixing the escalator unit 91 at the above-mentioned position. This facilitates the up and down movement of construction personnel and also makes it easier to fix the length of the ladder 9 to support the mounting frame 1, thus improving the stability of the mounting frame 1.

[0026] In other embodiments of this application, the escalator 9 may be replaced by being hinged to the sleeve 10, with the hinge axis of the escalator 9 parallel to the length direction of the mounting rod 8.

[0027] Reference Figure 6 Furthermore, to reduce the possibility of the bottom of the ladder 9 accidentally slipping, the ladder unit 91 near the grout stop wall 2 is fixedly installed at the bottom of the tunnel. A fixing plate 17 is hinged to the bottom of the ladder unit 91 near the grout stop wall 2. The rotation axis of the fixing plate 17 is parallel to the bottom of the tunnel. A first screw 18 is threaded onto the fixing plate 17. After the ladder 9 moves to the required position, the fixing plate 17 is rotated to make it fit against the ground. Then, the first screw 18 is rotated to drive into the ground, thereby fixing the ladder 9 at the aforementioned location. The implementation principle of the grouting reinforcement device for water-rich tunnels in this application embodiment is as follows: To reinforce the water-rich slab of the tunnel, after the grout stop wall 2 reaches its design strength, the mounting frame 1 is installed in front of the grout stop wall 2, and then the grouting conduit 4 is connected to the mounting plate 3. The mounting plate 3 is then slid, and the grouting conduit 4 is moved by the sliding of the mounting plate 3. When the grouting conduit 4 is aligned with the grouting pipe 5, the driving device 7 drives the grouting conduit 4 to slide and abut against the port of the grouting pipe 5, and fixes the grouting conduit 4 to the grouting pipe 5. Then, the grout is introduced into the grouting pipe 5 through the grouting conduit 4. The grout in the grouting pipe 5 is injected into the soil through the grout outlet to reinforce the tunnel. Then, the mounting plate 3 is slid to change the position of the grouting conduit 4 to carry out grouting operations on the adjacent grouting pipe 5. The position adjustment of the grouting conduit 4 by sliding the mounting plate 3 facilitates the connection between the grouting conduit 4 and the grouting pipe 5, thereby reducing the process of construction personnel connecting the grouting conduit 4 and the grouting pipe 5, and thus improving the grouting efficiency.

[0028] This application discloses a method for grouting reinforcement of water-rich tunnels, which uses a water-rich tunnel grouting reinforcement device and also includes; S1: After the grout-stopping wall 2 reaches the design strength, the mounting bracket 1 is fixedly installed in front of the grout-stopping wall 2, and then the grouting pipe 4 is connected to the delivery pump. S2: Slide the slide plate 31. The slide plate 31 drives the grouting pipe 4 to align with the grouting pipe 5. The grouting pipe 4 slides so that the opening of the grouting pipe 5 abuts against the locking nut. Then rotate the locking nut to connect the grouting pipe 4 and the grouting pipe 5. S3: Adjust the height of the installation rod 8, rotate the ladder 9 to a suitable tilt angle, and then fix the height of the ladder 9; adjust the height of the installation rod 8 so that the construction personnel can open the top grout stop valve when standing on the ladder 9. S4: Then carry out grouting operation. After grouting is completed, manually close the grout stop valve, then slide the slide plate 31 to move the grouting pipe 4 to the next grouting pipe 5, repeat step S2 to complete the water-stopping grouting operation.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A grouting reinforcement device for water-rich tunnels, characterized in that: The system includes an arc-shaped mounting frame (1) located in front of the grout-stopping wall (2), the mounting frame (1) having the same curvature as the tunnel, a mounting plate (3) slidably mounted on the mounting frame (1), the mounting plate (3) sliding along the outline of the mounting frame (1), a grouting conduit (4) slidably mounted on the mounting plate (3), the sliding direction of the grouting conduit (4) being perpendicular to the surface of the mounting plate (3), and a driving device (7) for driving the grouting conduit (4) to slide and be fixed on the grouting pipe (5) on the mounting plate (3). The mounting plate (3) includes a sliding plate (31) slidably mounted on the mounting frame (1) and a rotating plate (32) mounted on the sliding plate (31). The rotating plate (32) is rotatably mounted on the sliding plate (31). The rotation axis of the rotating plate (32) is parallel to the grout stop wall (2) and parallel to the sliding direction of the sliding plate (31). The grouting conduit (4) is slidably mounted on the rotating plate (32). A third driving member for driving the rotating plate (32) to rotate is provided on the sliding plate (31). The rotating plate (32) is a telescopic plate (322). The grouting conduit (4) is located on the telescopic plate (322) of the rotating plate (32).

2. The grouting reinforcement device for water-rich tunnels according to claim 1, characterized in that: The grouting conduit (4) and the grouting pipe (5) have the same diameter. The driving device (7) includes a first driving member for driving the grouting conduit (4) to slide against the port of the grouting pipe (5). A locking nut (72) is rotatably provided on the grouting conduit (4). The rotation axis of the locking nut (72) is coaxial with the axis of the grouting conduit (4). A threaded section for the locking nut (72) to be threadedly connected is provided on the peripheral wall of the grouting pipe (5). The driving device (7) also includes a second driving member for driving the locking nut (72) to rotate and be threadedly connected to the threaded section of the grouting pipe (5).

3. The grouting reinforcement device for water-rich tunnels according to claim 1, characterized in that: The mounting frame (1) is provided with a mounting rod (8), which is horizontal and located on the side of the mounting frame (1) away from the grout stop wall (2). The grouting pipe (4) is located between the mounting rod (8) and the grout stop wall (2). The mounting rod (8) is slidably provided with a ladder (9), which slides along the length of the mounting rod (8) and is obliquely supported on the tunnel floor.

4. The grouting reinforcement device for water-rich tunnels according to claim 3, characterized in that: Both ends of the mounting rod (8) are slidably mounted on the mounting frame (1). A disc (11) is fixedly mounted on the end of the mounting rod (8) and on the surface facing the mounting frame (1). The disc (11) is slidably engaged on the mounting frame (1). The mounting rod (8) is a telescopic rod. The reinforcement device also includes a fixing component for fixing the mounting rod (8) to the sliding position.

5. The grouting reinforcement device for water-rich tunnels according to claim 3, characterized in that: The ladder (9) includes multiple ladder units (91), which are arranged to overlap each other. The ladder unit (91) located away from the grout stop wall (2) is slidably arranged on the mounting rod (8). Adjacent ladder units (91) are slidably arranged relative to each other. The ladder unit (91) slides along the length direction perpendicular to the mounting rod (8). The ladder unit (91) close to the grout stop wall (2) is fixedly arranged at the bottom of the tunnel.

6. The grouting reinforcement device for water-rich tunnels according to claim 5, characterized in that: The bottom of the ladder unit (91) near the grout stop wall (2) is hinged with a fixing plate (17), the rotation axis of the fixing plate (17) is parallel to the bottom of the tunnel, and a first screw (18) is threaded onto the fixing plate (17).

7. The grouting reinforcement device for water-rich tunnels according to claim 5, characterized in that: The escalator unit (91) is provided with a slider and a groove (15) for sliding engagement on the side near the grout stop wall (2) and the side away from the grout stop wall (2), respectively. The escalator unit (91) is also threaded with a bolt (16), which is used to abut against the slider of the adjacent escalator unit (91).

8. The grouting reinforcement device for water-rich tunnels according to claim 5, characterized in that: A sleeve (10) is fixedly installed at the end of the ladder unit (91) located away from the grout stop wall (2), and the sleeve (10) is sleeved on the mounting rod (8).

9. A method for grouting reinforcement of water-rich tunnels, using the grouting reinforcement device for water-rich tunnels as described in any one of claims 1-8, characterized in that: Also includes; S1: After the grout-stopping wall (2) reaches the design strength, the mounting bracket (1) is fixedly installed in front of the grout-stopping wall (2), and then the grouting pipe (4) is connected to the delivery pump; S2: Slide the slide plate (31), the slide plate (31) drives the grouting conduit (4) to align with the grouting pipe (5), the grouting conduit (4) slides so that the opening of the grouting pipe (5) abuts against the locking nut (72), and then rotate the locking nut (72) to connect the grouting conduit (4) and the grouting pipe (5); S3: Adjust the height of the installation rod (8), rotate the ladder (9) to a suitable tilt angle, and then fix the height of the ladder (9); adjust the height of the installation rod (8) so that the construction personnel can open the top grout stop valve when standing on the ladder (9); S4: Then carry out grouting operation. After grouting is completed, manually close the grout stop valve, then slide the slide plate (31) and drive the grouting pipe (4) to move to the next grouting pipe (5). Repeat step S2 to complete the water-stopping grouting operation.

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