Tunnel multi-channel rapid grouting joint device and tunnel grouting system

Abstract

The application provides a tunnel multi-channel fast grouting joint device and a tunnel grouting system. The tunnel multi-channel fast grouting joint device comprises a first grouting hose, a joint, a push tube, a base, a linear driving unit, a rotary driving unit and a second grouting hose. The first grouting hose is connected with a hollow anchor rod. The second grouting hose is communicated with a grouting outlet of a grouting machine, and the second grouting hose is communicated with an input end of the push tube. The base is rotatable, and the push tube is arranged on the base. Under the driving of the linear driving unit, the push tube can move along the radial direction between a connection position and a separation position. A plurality of joints are arranged on the outer periphery of a first axis in the circumferential direction of the first axis. The outer periphery of the pipe wall of the output end is provided with a convex edge. The quick connection end of the joint is provided with a rotatable closure. When the push tube is in the connection position, the closure abuts against the push tube. The tunnel grouting system comprises the tunnel multi-channel fast grouting joint device. The application realizes multi-channel fast grouting and improves work efficiency.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction equipment technology, specifically to a multi-channel rapid grouting joint device and a tunnel grouting system used in the initial support of tunnel construction. Background Technology

[0002] In tunnel construction, anchor bolts play a crucial role as an important initial support system. When uniformly deploying radial anchor bolt systems along the tunnel circumference, a large number of anchor bolts are installed per cycle. Whether using manual pneumatic drills, rock drilling rigs, or anchor bolt drilling machines, the drilling and installation speed of hollow anchor bolts has been significantly increased.

[0003] However, in terms of the grouting construction process for anchor bolts, currently, grouting machines are used to grout single anchor bolts. This is mainly because the grouting machine can only have one grout outlet to ensure pressure and one grouting pipe to connect to the anchor bolt. As a result, the anchor bolts can only be grouted one by one in the construction cycle. This leads to a longer anchor bolt grouting process in each cycle. Moreover, after each anchor bolt is grouted, the grouting pipe needs to be disassembled and connected to the next anchor bolt. The time spent connecting the pipes back and forth is long and the grouting process is cumbersome, ultimately resulting in an excessively long construction process for the entire anchor bolt. Even worse, some construction workers deliberately reduce the number of anchor bolts to be grouted in order to "speed up the anchor bolt construction," cutting corners and causing quality and safety hazards. Summary of the Invention

[0004] The primary objective of this invention is to provide a multi-channel rapid grouting joint device for tunnels that improves work efficiency and avoids safety hazards.

[0005] The second objective of this invention is to provide a tunnel grouting system that improves work efficiency and avoids safety hazards.

[0006] The tunnel multi-channel rapid grouting joint device provided by the present invention includes a first grouting hose, joints, a jacking pipe, a base, a linear drive unit, a rotary drive unit, and a second grouting hose. The first grouting hose is used to connect with a hollow anchor bolt. The second grouting hose is used to communicate with the grout outlet of the grouting machine and is also connected to the input end of the jacking pipe. Under the drive of the rotary drive unit, the base can rotate around a first axis. The jacking pipe and the linear drive unit are both mounted on the base, and the jacking pipe extends radially along the first axis. Under the drive of the linear drive unit, the jacking pipe can move radially between a connection position and a separation position. Multiple joints are arranged circumferentially around the first axis, and the joints are arranged radially. In the radial direction, the joints include oppositely arranged quick-connect fittings. The jacking pipe has an end and an end, with the quick-connect end facing the first axis, and each end is connected to a first grouting hose. When the jacking pipe is in the connected position, the output end of the jacking pipe is connected to the quick-connect end; when the jacking pipe is in the separated position, the output end of the jacking pipe is separated from the quick-connect end. The output end includes a pipe wall and a protruding edge surrounding the outer periphery of the pipe wall. The quick-connect end includes a peripheral wall and a closure. The closure includes a bent and connected driving part and a closed fitting part, and the bent connection between the driving part and the closed fitting part is rotatably connected to the peripheral wall. When the jacking pipe moves from the separated position to the connected position, the protruding edge pushes the driving part, causing the closure to swing and the closed fitting part to move in a direction close to the center line of the jacking pipe. When the jacking pipe is in the connected position, the peripheral wall is fitted over the pipe wall, and the extended end of the closed fitting part abuts against the outer peripheral surface of the pipe wall.

[0007] As can be seen from the above scheme, since the jacking pipe can rotate along the first axis and move radially, and multiple joints for docking with the hollow anchor rods are arranged circumferentially on the outer periphery of the jacking pipe, after the jacking pipe moves toward any joint and inserts into the joint, a rapid sealing connection between the jacking pipe and the joint can be achieved through the connection and cooperation of the convex edge and the sealing element. Therefore, according to the anchor drilling rig and installation progress at the construction site, a sufficient number of anchor rods can be quickly docked with the joints and grouted through the circumferential movement of the jacking pipe. Finally, multi-channel rapid grouting can be achieved in the cycle, thereby efficiently completing the grouting of each hollow anchor rod and avoiding the occurrence of safety hazards.

[0008] A further solution is that when the push tube moves from the connection position to the separation position, the convex edge pushes the closing part, causing the closing part to swing and move the closing part away from the center line of the push tube.

[0009] As can be seen from the above, after grouting is completed, the linear drive unit drives the jacking pipe to retract. After the convex edge and the closed mating part are linked, the sealing connection between the joint and the jacking pipe can be released, and the jacking pipe can also retract smoothly. Therefore, the disassembly and separation process between the joint and the jacking pipe is quick, effective and automated, thereby further improving construction efficiency.

[0010] A further option is that the outer periphery of the pipe wall is a regular polygon, and the outer periphery includes multiple adjacent planes; multiple closures are evenly arranged circumferentially along the quick-connect end, and the extended end of the closure mating part has a flat part; when the push pipe is in the connection position, each flat part abuts against a plane, and any two adjacent closure mating parts are sealed together.

[0011] As can be seen from the above, by setting the sealing mating part of multiple sealing parts as a flat part and setting the outer peripheral surface of the pipe wall as including multiple adjacent planes, this method does not need to consider the influence of the diameter design of the radial part located on the arc surface of the sealing mating part under the arc surface mating. It is easy to design and conducive to ensuring the sealing mating between each sealing part and the outer peripheral surface of the pipe wall. Furthermore, it is also easy to achieve a sealing connection between any two adjacent sealing parts.

[0012] A further option is to use an elastic seal for the leveling section, where the elastic seal abuts against the outer circumferential surface of the pipe wall when the push tube is in the connection position.

[0013] As can be seen from the above, this setting can further ensure the sealing fit between the extended end of the closed mating part and the outer circumferential surface of the pipe wall.

[0014] A further option is that the outer surface profile of the convex edge is arc-shaped in the direction perpendicular to the extension direction of the push tube.

[0015] As can be seen from the above, this design gives the convex edge a guiding effect, which makes it easy for the closure to swing when the push tube moves forward or backward, thus making the insertion and removal of the push tube smoother and avoiding jamming.

[0016] A further option is that the closure rotates along the second axis; the distance from the extended end of the drive part to the second axis is less than the distance from the extended end of the closure mating part to the second axis.

[0017] As can be seen from the above, when the push tube retracts and under the action of the convex edge, the drive unit will swing in the direction of gradually approaching the push tube. This setting can prevent the excessively long drive unit from abutting the push tube and causing the push tube to jam and become unable to be pulled out.

[0018] A further embodiment is that the tunnel multi-channel rapid grouting joint device also includes a chassis; the chassis includes a central part, a connecting part, and an outer ring part, the outer ring part is located on the outer periphery of the central part, and the connecting part is connected between the central part and the outer ring part; there is a gap between the central part and the outer ring part to form an opening, which is used as the slurry recovery inlet of the slurry mixing cylinder; the base is rotatably mounted on the central part, and multiple joints are arranged circumferentially on the outer ring part along the chassis, with the quick-connect end and the output end of the push pipe in the separated position located directly above the slurry recovery inlet.

[0019] As can be seen from the above, the chassis not only effectively ensures the relative position of the jacking pipe and multiple joints to guarantee successful docking, but the openings formed on the chassis can also be used to recover the slurry that falls when the jacking pipe retracts, thus avoiding material waste.

[0020] A further proposed solution is that the chassis also includes a first guide wall and a second guide wall. The first guide wall extends downward from the outer peripheral edge of the central part, and the second guide wall extends downward from the inner peripheral edge of the outer ring part. A slurry recovery channel is formed between the first guide wall and the second guide wall, and the slurry recovery channel is connected to the slurry recovery inlet.

[0021] As can be seen from the above, this setting can guide the recovered slurry to ensure that the slurry reaches the mixing position.

[0022] Another further option is to have an annular guide rail arranged around the first axis on the central part, and a guide groove on the bottom of the base, with the annular guide rail cooperating with the guide groove.

[0023] As can be seen from the above, this setting can ensure the accuracy of the base rotation, and further ensure the accurate docking of the push tube with multiple joints.

[0024] The tunnel grouting system provided by the second objective of this invention includes multiple hollow anchor bolts, a grouting machine, and a grout mixing drum, with the grout mixing drum connected to the grout inlet of the grouting machine; it also includes the aforementioned multi-channel rapid grouting joint device; a second grouting hose is connected between the grout outlet of the grouting machine and the input end of the jacking pipe, and a first grouting hose is connected between the joint and the hollow anchor bolts; the multi-channel rapid grouting joint device is installed on the grout mixing drum, with the quick-connect end and the output end in the separated position both located directly above the grout recovery inlet of the grout mixing drum.

[0025] As can be seen from the above scheme, since the jacking pipe can rotate along the first axis and move radially, and multiple joints for docking with the hollow anchor rods are arranged circumferentially on the outer periphery of the jacking pipe, after the jacking pipe moves toward any joint and inserts into the joint, a rapid sealing connection between the jacking pipe and the joint can be achieved through the connection and cooperation of the convex edge and the sealing element. Therefore, according to the anchor drilling rig and installation progress at the construction site, a sufficient number of anchor rods can be quickly docked and grouted one by one through the circumferential movement of the jacking pipe. Finally, multi-channel rapid grouting can be achieved in the cycle, thereby efficiently completing the grouting of each hollow anchor rod and avoiding the occurrence of safety hazards. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an embodiment of the tunnel grouting system of the present invention.

[0027] Figure 2 This is a side view of an embodiment of the multi-channel rapid grouting joint device for tunnels according to the present invention.

[0028] Figure 3 This is a top view of an embodiment of the multi-channel rapid grouting joint device for tunnels according to the present invention.

[0029] Figure 4 This is a structural diagram of the chassis of an embodiment of the multi-channel rapid grouting joint device for tunnels of the present invention.

[0030] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0031] Figure 6 This is a top view of the jacking pipe in an embodiment of the multi-channel rapid grouting joint device for tunnels of the present invention.

[0032] Figure 7 This is a cross-sectional view of the jacking pipe and the joint in the first mating state in an embodiment of the multi-channel rapid grouting joint device for tunnels of the present invention.

[0033] Figure 8 This is a schematic diagram of the sealing component in an embodiment of the multi-channel rapid grouting joint device for tunnels of the present invention.

[0034] Figure 9 This is a cross-sectional view of the jacking pipe and the joint in an embodiment of the multi-channel rapid grouting joint device for tunnels of the present invention.

[0035] Figure 10 This is a cross-sectional view of the jacking pipe and the joint in the second mating state in an embodiment of the multi-channel rapid grouting joint device for tunnels of the present invention. Detailed Implementation

[0036] See Figure 1 The tunnel grouting system is used for radial grouting of multiple hollow anchor rods that have been installed. The tunnel grouting system includes a grout mixing drum 11, a grouting machine 12, a tunnel multi-channel rapid grouting joint device 2 of the present invention, and multiple hollow anchor rods (not shown in the figure) that need to be grouted, arranged in sequence along the grout flow path. The tunnel multi-channel rapid grouting joint device 2 includes a second grouting hose 13, a jacking pipe 3, a joint 4, and a first grouting hose 14. The outlet of the grout mixing drum 11 is connected to the grout inlet 121 of the grouting machine 12, the grout outlet 122 of the grouting machine 12 is connected to the first extension end of the second grouting hose 13, the second extension end of the second grouting hose 13 is connected to the input end 31 of the jacking pipe 3, and the output end 32 of the jacking pipe 3 is optionally connected to one end of the joint 4. The other end of the joint 4, the first grouting hose 14, and the aforementioned hollow anchor rods are connected in sequence.

[0037] Among them, the driven jacking pipe 3 is movable. Therefore, as long as the jacking pipe 3 is moved and sealed with the joint 4, the grout can be output from the grout mixing drum 11 until it reaches the hollow anchor rod. In addition, the driven jacking pipe 3 is rotatable. Therefore, as long as the jacking pipe 3 is rotated and connected with different joints 4, multi-channel rapid grouting can be achieved.

[0038] See Figures 2 to 4 The tunnel multi-channel rapid grouting joint device 2 is installed on the grout mixing drum 11 via the chassis 6. In addition to the chassis 6, the second grouting hose 13, the jacking pipe 3, the joint 4 and the first grouting hose 14 mentioned above, the tunnel multi-channel rapid grouting joint device 2 also includes a base 52, a linear drive unit 53 and a rotary drive unit 51.

[0039] See Figure 2 From a height perspective, chassis 6 comprises an upper part 601 and a lower part 602, such as... Figure 4 As shown, the upper part includes a central part 61, an outer ring part 62 and a connecting part 69. The central part 61 is disposed at the first axis 100, the outer ring part 62 is disposed around the first axis 100 on the outer periphery of the central part 61, and there is a gap between the central part 61 and the outer ring part 62 to form an opening 63. The connecting part 69 connects the central part 61 and the outer ring part 62.

[0040] like Figure 2 As shown, the lower part includes a first guide wall 611 and a second guide wall 621. The first guide wall 611 extends downward from the outer peripheral edge of the central part 61, and the second guide wall 621 extends downward from the inner peripheral edge of the outer ring part 62. A slurry recovery channel 64 communicating with the opening 63 is formed between the first guide wall 611 and the second guide wall 621. Furthermore, from top to bottom, the second guide wall 621 extends obliquely in a direction gradually approaching the first axis 100, and the extension end of the second guide wall 621 bends and extends directly below the first guide wall 611, so that the channel outlet 640 of the slurry recovery channel 64 faces the first axis 100. Therefore, the opening 63 is used as the slurry recovery inlet of the slurry mixing drum 11. The slurry dripping from above the opening 63 can enter the slurry recovery channel 64 through the opening 63 and return to the slurry mixing drum 11. Under the guidance of the bent and extended second guide wall 621, the slurry thrown out from the channel outlet 640 is closer to the mixing center of the slurry mixing drum 11, which is more conducive to the full mixing of the slurry.

[0041] See also Figures 2 to 4The rotation drive unit 51 is installed below the upper part 601. The rotation drive unit 51 includes a motor 511, a gear set 512, and a main shaft 513, which are driven sequentially. The main shaft 513 is located at the first axis 100 and passes through the central part 61 from bottom to top. The base 52 is fixedly connected to the upper end of the main shaft 513. Therefore, under the drive of the motor 511, the base 52 can rotate along the first axis 100. Furthermore, combined with… Figure 5 The central part 61 is provided with an annular guide rail 71 arranged around the first axis 100, and the bottom of the base 52 is provided with a guide groove 72. The annular guide rail 71 and the guide groove 72 cooperate to ensure the effective swing of the base 52.

[0042] Combined Figure 6 Both the push tube 3 and the linear drive unit 53 are mounted on the base 52. The linear drive unit 53 includes a cylinder 531 and a connecting plate 533. The connecting plate 533 is fixedly connected to the extended end of the piston rod 532 along a direction parallel to the piston rod 532 of the cylinder 531. The linear drive direction of the linear drive unit 53 is radially parallel to the first axis 100. The push tube 3 is fixedly connected to the connecting plate 533 and is arranged radially along the first axis 100. Therefore, under the push of the cylinder 531, the push tube 3 can move forward or backward radially along the first axis 100. In addition, the base 52 is also provided with a guide mechanism 54, which is a guide rod. The guide rod is parallel to the piston rod 532 and is respectively arranged on opposite sides of the push tube 3. The guide rod is slidably engaged with the connecting plate 533. This arrangement can ensure the accuracy of the linear movement of the push tube 3 and ensure that the push tube 3 can reach the accurate position and connect with the connector 4.

[0043] See also Figure 2 and Figure 3 Multiple connectors 4 are arranged circumferentially along the first axis 100 and fixedly installed on the outer ring 62. The connectors 4 are arranged radially along the first axis 100. In the radial direction of the first axis 100, the connectors 4 include quick-connect end 401 and end 402 arranged opposite to each other. The quick-connect end 401 faces the first axis 100, and each end 402 is connected to a first grouting hose 14. Figure 2 The pusher pipe 3 shown is in the separated position. At this time, the pusher pipe 3 and the quick-connect end 401 of the connector 4 are both located directly above the inlet 63. Since the slurry remaining in the pipe will flow out when the pusher pipe 3 is pulled out, this setting can effectively recover the slurry.

[0044] See Figure 6 and Figure 9 The output end 302 of the push tube 3 includes a tube wall 31 and a protruding edge 32 surrounding the outer periphery of the tube wall 31. The outer periphery of the tube wall 31 is square, and the outer periphery of the tube wall 31 includes four adjacent planes 310. In a direction perpendicular to the extension direction of the push tube 3, the outer surface profile of the protruding edge 32 is arc-shaped.

[0045] See Figure 7 The quick-connect end 401 includes a peripheral wall 41 and a closing member 8. The inner peripheral contour of the peripheral wall 41 is square. Along the extension direction of the quick-connect end 401 and from the quick-connect end 401 to the end 402, the inner peripheral contour of the peripheral wall 41 continuously changes in steps to form a first step position 411 and a second step position 412. The first step position 411 and the second step position 412 are both planar portions facing the entrance of the quick-connect end 401. A first rubber pad 491 is provided on the first step position 411, and a second rubber pad 492 is provided on the second step position 412.

[0046] See Figure 7 and Figure 8 The closure 8 includes a bent-connected driving part 81 and a closing mating part 82. The bent connection between the driving part 81 and the closing mating part 82 is rotatably connected to the peripheral wall 41 at the second axis 800. The distance from the extended end of the driving part 81 to the second axis 80 is less than the distance from the extended end of the closing mating part 82 to the second axis 80. The extended end of the closing mating part 82 is connected to an elastic sealing element 83, which is a rubber gasket. The elastic sealing element 83 is used to abut against the push tube 3 in the connection position. The elastic sealing element 83 has a flat abutting surface, which is the flat part 821 of the present invention. See also... Figure 7 and Figure 9 Four sealing parts 8 are evenly arranged around the circumference of the connector 4 on the outer periphery of the socket of the connector 4.

[0047] See Figure 2 When the push tube 3 is in the disengaged position, the output end 302 of the push tube 3 is separated from the quick-connect end 401; when the push tube 3 is in the disengaged position... Figure 2 The separation position shown has been moved to Figure 7 As shown in the diagram, the protruding edge 32 pushes the drive unit 81, causing the closure 8 to swing and the closing mating part 82 to move along the direction close to the center line 300 of the push tube 3; [This is followed by a description of the connection position and its connection to the drive unit 81.] Figure 9 When the push tube 3 is in the connection position, the peripheral wall 41 is fitted outside the tube wall 31, the extended end of the closed fitting part 82 abuts against the outer peripheral surface of the tube wall 31, and at this time the axial end face of the output end 302 abuts against the second rubber pad 492, and the swinging drive part 81 also abuts against the first rubber pad 491.

[0048] Combined Figure 10If grouting is completed, the linear drive unit 53 drives the push tube 3 to retract, and during the process of the push tube 3 moving from the connection position to the separation position, the convex edge 32 pushes the sealing mating part 82, causing the sealing part 8 to swing and the sealing mating part 82 to move in a direction away from the center line 300 of the push tube 3. After the convex edge 32 and the sealing mating part 81 are linked, the sealing connection between the joint 4 and the push tube 3 can be released, and the push tube 3 can also retract smoothly. Therefore, the disassembly and separation process between the joint 4 and the push tube 3 is quick, effective and automated.

[0049] Therefore, after the jacking pipe 3 moves toward any joint 4 and is inserted into the joint 4, the jacking pipe 3 and the joint 4 can be quickly sealed and connected under the communication and cooperation of the convex edge 32 and the sealing part 8. According to the anchor drilling rig and installation progress at the construction site, a sufficient number of anchor rods can be quickly connected to the joint 4 and grouting can be performed by using a grouting hose. Finally, multi-channel rapid grouting can be achieved in the circulation, so as to efficiently complete the grouting of each hollow anchor rod and avoid the occurrence of safety hazards.

[0050] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A tunnel multi-channel rapid grouting joint device, comprising a first grouting hose, the first grouting hose being used for docking with a hollow anchor bolt; Its features are: It also includes a connector, a pusher pipe, a base, a linear drive unit, a rotary drive unit, and a second grouting hose; The second grouting hose is used to connect with the grout outlet of the grouting machine, and the second grouting hose is connected with the input end of the jacking pipe; Driven by the rotation drive unit, the base can rotate around the first axis; Both the push tube and the linear drive unit are mounted on the base, and the push tube extends radially along the first axis. Under the drive of the linear drive unit, the push tube can move radially between the engagement position and the disengagement position. Multiple connectors are arranged circumferentially around the first axis on the outer periphery of the first axis, and the connectors are arranged radially. In the radial direction, each connector includes a quick-connect end and an end that are arranged opposite each other. The quick-connect end faces the first axis, and each end is connected to one of the first grouting hoses. When the push tube is in the connection position, the output end of the push tube is connected to the quick-connect end; When the push tube is in the separated position, the output end of the push tube is separated from the quick-connect end; The output end includes a tube wall and a protruding edge surrounding the outer periphery of the tube wall; The quick-connect end includes a peripheral wall and a closure; The closure includes a bent and connected driving part and a closed fitting part, wherein the bent connection between the driving part and the closed fitting part is rotatably connected to the peripheral wall; When the push tube moves from the separation position to the connection position, the convex edge pushes the drive part to make the closure swing and the closure mating part move in a direction close to the center line of the push tube; When the push tube is in the connecting position, the peripheral wall is fitted outside the tube wall, and the extended end of the closed fitting part abuts against the outer peripheral surface of the tube wall.

2. The tunnel multi-channel rapid grouting joint device according to claim 1, characterized in that: When the push tube moves from the connecting position to the separating position, the convex edge pushes the closing part, causing the closing member to swing and the closing part to move in a direction away from the center line of the push tube.

3. The tunnel multi-channel rapid grouting joint device according to claim 2, characterized in that: The outer periphery of the pipe wall is a regular polygon, and the outer periphery includes multiple adjacent planes; The plurality of said closures are evenly arranged circumferentially along the quick-connect end, and the extended end of the closure mating part has a flat portion; When the push tube is in the connecting position, each of the flattening parts abuts against one of the planes, and any two adjacent closed mating parts are sealed together.

4. The tunnel multi-channel rapid grouting joint device according to claim 3, characterized in that: The leveling part is an elastic seal. When the push tube is in the connection position, the elastic seal abuts against the outer circumferential surface of the tube wall.

5. A tunnel multi-channel rapid grouting joint device according to claim 2, characterized in that: In a direction perpendicular to the extension direction of the push tube, the outer surface contour of the convex edge is arc-shaped.

6. The tunnel multi-channel rapid grouting joint device according to claim 2, characterized in that: The closure rotates along the second axis; The distance from the extended end of the drive unit to the second axis is less than the distance from the extended end of the closed mating part to the second axis.

7. A tunnel multi-channel rapid grouting joint device according to any one of claims 1 to 6, characterized in that: The tunnel multi-channel rapid grouting joint device also includes a chassis; The chassis includes a central part, a connecting part, and an outer ring part. The outer ring part is disposed on the outer periphery of the central part, and the connecting part connects the central part and the outer ring part. An opening is formed between the central portion and the outer ring portion, and the opening serves as a slurry recovery inlet for the slurry mixing tank. The base is rotatably mounted on the central part, and a plurality of the connectors are arranged circumferentially on the outer ring part of the chassis. The quick-connect end and the output end of the push tube in the separated position are both located directly above the slurry recovery inlet.

8. A tunnel multi-channel rapid grouting joint device according to claim 7, characterized in that: The chassis also includes a first guide wall and a second guide wall. The first guide wall extends downward from the outer peripheral edge of the central portion, and the second guide wall extends downward from the inner peripheral edge of the outer ring portion. A slurry recovery channel is formed between the first guide wall and the second guide wall, and the slurry recovery channel is connected to the slurry recovery inlet.

9. A tunnel multi-channel rapid grouting joint device according to claim 7, characterized in that: The central part is provided with an annular guide rail arranged around the first axis, and the bottom of the base is provided with a guide groove, the annular guide rail cooperating with the guide groove.

10. A tunnel grouting system, comprising multiple hollow anchor bolts, a grouting machine, and a grout mixing drum, wherein the grout mixing drum is connected to the grout inlet of the grouting machine; Its features are: It also includes the tunnel multi-channel rapid grouting joint device as described in any one of claims 1 to 9 above; The second grouting hose is connected between the grout outlet of the grouting machine and the input end of the jacking pipe, and the first grouting hose is connected between the joint and the hollow anchor rod; The tunnel multi-channel quick grouting joint device is installed on the grout mixing drum, and the quick-connect end and the output end in the separation position are both located directly above the grout recovery inlet of the grout mixing drum.

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