A tunnel lining modular endless longitudinal grouting method

Abstract

The application discloses a tunnel lining modularization endless longitudinal grouting method, which comprises the following steps: step S1, three grouting holes for grouting pipes to pass through are symmetrically reserved on the vault of a tunnel lining pouring formwork, and the left and right side walls of the tunnel lining formwork are first grouted by using a punch grouting mode; step S2, a plurality of grouting pipes are installed by using a longitudinal grouting pipe mounting and dismounting system, and each grouting pipe is sequentially pushed into the grouting hole on the vault of the tunnel lining pouring formwork; step S3, the grouting pipes are pulled out and dismounted by the longitudinal grouting pipe mounting and dismounting system; and step S4, grouting is sequentially performed on one grouting hole on the left side or the right side and the grouting hole on the middle top according to steps S2 to S3, so that the working space of the grouting pipes is greatly reduced, the design is in line with actual demands, the conception is novel, and the concrete pouring effect is good.

Description

A modular, stepless longitudinal grouting method for tunnel lining Technical Field

[0001] This invention belongs to the field of tunnel lining grouting technology, specifically relating to a modular infinite longitudinal grouting method for tunnel lining. Background Technology

[0002] Traditional tunnel lining construction methods involve layer-by-layer pouring using a fully hydraulic lining trolley and a bottom-up grouting process. However, this method struggles to achieve ideal concrete fluidity, and air cannot be completely expelled between grouting holes. Consequently, traditional tunnel lining construction is limited by the vertical grouting process, making it unavoidable for the lining to detach behind the lining. Current longitudinal grouting techniques typically involve inserting a single long grouting pipe into the top center of the tunnel lining arch for a single grouting operation, followed by removal of the entire pipe. This severely impacts the workspace for other processes, such as waterproofing membrane installation, support protection, and excavation, all of which require work in front of the lining trolley, leading to delays in the overall construction schedule. Summary of the Invention

[0003] This invention aims to provide a modular, stepless longitudinal grouting method for tunnel lining, which is automated and allows for quick installation and dismantling of grouting pipes. It solves the problem that traditional tunnel secondary lining construction methods inevitably lead to voids behind the secondary lining, and that current longitudinal grouting processes use a single long grouting pipe for both entry and exit, which affects the working space of other processes.

[0004] Therefore, the technical solution adopted in this invention is: a modular infinite longitudinal grouting method for tunnel lining, comprising the following steps:

[0005] Step S1: Three grouting holes are symmetrically reserved on the left, middle and right sides of the top of the tunnel lining casting formwork arch for grouting pipes to pass through. Grouting is first carried out on the left and right sidewalls of the tunnel lining formwork using the top grouting method.

[0006] Step S2: When the concrete is poured to the arch of the adjacent tunnel lining formwork, several sections of grouting pipes are installed by threading the ends of the longitudinal grouting pipe installation and removal system. At the same time, each section of the installed grouting pipe is pushed into the grouting hole at the top of the tunnel lining casting formwork. Grouting is carried out after several sections of grouting pipes are installed and completely placed inside the tunnel lining formwork.

[0007] Step S3: When the grouting height reaches the design height, the grouting pipe is pulled out and removed section by section through the longitudinal grouting pipe installation and removal system. When the last section of the grouting pipe is pulled out of the tunnel lining formwork, the corresponding grouting hole is sealed in time.

[0008] Step S4: Perform grouting on one of the grouting holes on the left and right sides and the grouting hole located at the top center, in sequence according to steps S2 to S3.

[0009] As a preferred embodiment of the above scheme, step S2 uses 12 sections of grouting pipes connected end to end by threads, and each section of grouting pipe is 2m to 2.5m long, ensuring that the grouting is carried out on a pipe no shorter than 12m, thereby penetrating deep into the tunnel lining. This design is reasonable.

[0010] Further preferably, in step S3, when grouting one of the grouting holes on the left or right side, the designed height is 0m to 0.5m higher than the grouting holes on the left and right sides. If it is higher than the grouting hole by 0.5m, it will cause insufficient concrete grouting pressure, so the range is reasonable. When grouting the grouting hole located at the top of the middle, the designed height is the top of the tunnel lining. The grouting holes are all in a closed state when not in use to avoid concrete overflow, so the design is reasonable.

[0011] More preferably, in step S2, the longitudinal grouting pipe installation and dismantling system includes a docking pipe moving assembly, a grouting pipe dismantling and assembly assembly for longitudinally limiting and clamping the grouting pipe, a dismantling and assembly lateral movement device for driving the grouting pipe dismantling and assembly assembly to move laterally, and a grouting pipe hatch opening and closing device installed on the casting template. The docking pipe moving assembly includes a docking pipe longitudinal movement device and a docking pipe lifting device installed at the moving end of the docking pipe longitudinal movement device. A pipe clamping and dragging device is installed on the top of the docking pipe lifting device, and a side roller is installed on the right side of the docking pipe lifting device. The cylinder device is used to adjust the docking angle of the tunnel grouting pipes by rotating the pipe lifting device; the disassembly and assembly lateral movement device includes a support frame, a lateral movement slide rail mounted on the support frame, a disassembly and assembly lifting column that moves along the lateral movement slide rail, and a lateral movement drive motor reducer that provides lateral movement force to the disassembly and assembly lifting column; the grouting pipe disassembly and assembly assembly includes a pipe clamping device, a pipe tightening device, and a pipe rotating device, which are installed side by side from back to front on the top of the disassembly and assembly lifting column. The pipe clamping device includes a support base frame and a pipe clamping mechanism mounted on the support base frame. The pipe clamping and dragging device includes a mounting bracket. The device includes a pipe clamping and dragging mounting bracket extending rearward from the top of the pipe lifting device, a clamping and dragging slide rail laid longitudinally above the pipe clamping and dragging mounting bracket, a pipe clamping mechanism moving along the clamping and dragging slide rail, and a clamping and dragging hydraulic cylinder providing driving force for movement. The pipe tightening device includes a tiltable and rotatable base and a pipe clamping mechanism mounted on the tiltable and rotatable base. The pipe clamping mechanism includes a transverse base, a pipe clamping slide rail mounted transversely on the transverse base, a clamping moving block sliding along the pipe clamping slide rail, and arc-shaped clamping seats mirror-mounted on the clamping moving block. The device includes a swivel pipe fixing base, a swivel pipe lateral movement assembly that slides longitudinally along the swivel pipe fixing base, and a pipe rotation assembly mounted on the swivel pipe lateral movement assembly. The swivel pipe lateral movement assembly includes a transverse base, a pipe clamping slide rail mounted transversely on the transverse base, and a clamping moving block that slides along the pipe clamping slide rail. The pipe rotation assembly is mirror-mounted on the clamping moving block of the swivel pipe lateral movement assembly. When the disassembly and assembly lifting column drives the grouting pipe disassembly and assembly assembly to descend and move laterally to make room, the pipe clamping and dragging device moves forward to clamp the grouting pipe and drag it back to its original position by connecting the pipe moving assembly.

[0012] Compared to the layered pouring and bottom-up grouting process using a fully hydraulic lining trolley, this scheme adopts a longitudinal grouting method instead of vertical grouting. A side-rolling cylinder device is installed on the right side of the connecting pipe lifting device to adjust the connecting angle of the tunnel grouting pipes. This allows for alternating grouting of the grouting pipes in the left, middle and right longitudinal directions of the tunnel arch. Moreover, through longitudinal grouting, the grouting pipes can also release air while grouting, achieving two goals at once and effectively preventing the phenomenon of voids behind the secondary lining.

[0013] The grouting pipe section is clamped by the clamping device, and the front end of the grouting pipe section is clamped by the pipe clamping device of the connecting pipe moving assembly. Then, the grouting pipe section is screwed into the grouting pipe section by the pipe screwing device, and then tightened by the pipe screwing device. Then, the grouting pipe disassembly and assembly assembly loosens the grouting pipe and moves it laterally by the disassembly and assembly lateral movement device. The connecting pipe moving assembly pushes the grouting pipe into the tunnel lining along the grouting hole. Then, the grouting pipe is released and the assembly moves backward to install the next section of pipe in sequence.

[0014] The swivel pipe transverse movement assembly can slide longitudinally along the swivel pipe fixed base, thereby adjusting its position back and forth. The clamping moving block is installed laterally on the lateral base of the pipe clamping slide rail, which can drive the pipe rotation assembly to adjust its position left and right. The structure is interlocked and the design is ingenious. The pipe rotation assembly is used to make the grouting pipe rotate so as to tighten or loosen it.

[0015] The pipe clamping mechanism is mounted on a tiltable and rotatable base, thereby achieving a small range of tilt and rotation. This allows for enhanced tightening or initial loosening in conjunction with the pipe-spinning device, resulting in a reasonable structural layout.

[0016] The pipe lifting device is used to adjust the docking height, the pipe longitudinal movement device is used to adjust the longitudinal orientation of the docking, and the pipe clamping device can clamp the end of the grouting pipe for initial fixation, realizing flexible adjustment of the up, down, front and back orientation. The drive equipment all use hydraulic cylinders to realize automatic control docking, followed by grouting. The operation is simple, time-saving and labor-saving.

[0017] Compared to manual methods that cannot seal quickly and promptly, this solution uses the opening and closing of the grouting pipe in the tunnel lining for automatic sealing. When the grouting of the last section is completed and the end of the pipe passes through the right-side through hole, the hydraulic rod driven by the door pushes the left-side through hole closer to the grouting pipe until the door is tightened with the cover plate to seal the grouting port on the casting template, thus achieving automatic sealing. This method saves time and effort, has high sealing efficiency and good sealing performance, and effectively prevents concrete from flowing out.

[0018] More preferably, the clamping moving block includes a main block, fixed slider seats fixed at both ends of the main block and sliding along the clamping tube slide rail, and movable slider seats movably installed in the middle of the main block and sliding along the clamping tube slide rail. The fixed slider seat at the left end is equipped with a return spring assembly fixed on the transverse base. The left end of the transverse base is provided with a return spring mounting seat. The return spring assembly includes a spring, a spring guide shaft, a spring adjusting nut at the left end of the spring, and a spring buffer pad at the right end of the spring. The spring guide shaft is threaded, and its right end passes through the fixed slider seat and is fixed by a nut, while its left end passes through the return spring mounting seat and is fixed. The spring adjusting nut is threaded with the spring guide shaft, thereby adjusting the length of the spring by rotating and moving along the spring guide shaft thread. The design structure is reasonable.

[0019] A further preferred embodiment is that the arc-shaped clamping seat on the right is fixedly installed on the fixed slider seat at the right end, and the arc-shaped clamping seat on the left is installed on the movable slider seat. A hydraulic push rod is installed between the fixed slider seat on the left and the arc-shaped clamping seat on the left. The hydraulic push rod can push the arc-shaped clamping seat on the left to move along the pipe clamping slide rail and approach the arc-shaped clamping seat on the right to clamp the grouting pipe. The hydraulic automatic push is adopted, which saves time and effort and has a reasonable design structure.

[0020] More preferably, the tiltable and rotatable base includes a base and a clamping mechanism mounting seat that is tiltable and rotatable on the base. The top of the base is provided with a sliding channel with an arc-shaped sliding path, and the bottom of the clamping mechanism mounting seat is provided with an arc-shaped slide block passing through the sliding channel. The sliding channel has a symmetrical groove structure. The arc-shaped slide block is symmetrically installed with guide sliders that match the groove of the sliding channel. A pipe tightening hydraulic rod is hinged between the base and the transverse base of the pipe clamping mechanism. When the pipe tightening hydraulic rod extends or retracts, the guide slider moves along the sliding channel. The structure is ingeniously designed, and the clamping mechanism mounting seat tilts and rotates left and right along the base, thereby realizing further tightening or initial loosening of the grouting pipe. Disassembly and assembly are more convenient, and the pipe clamping mechanism is driven to tilt and rotate left and right.

[0021] Further preferably, the rotating tube fixing base has a vertical spring shaft mounting plate centered on the front and rear sides, the bottom of the rotating tube transverse moving assembly has a support plate corresponding to the front and rear of the spring shaft mounting plate, a horizontal longitudinal spring mounting shaft is installed between the spring shaft mounting plate and the bottom support plate of the rotating tube transverse moving assembly, and each spring mounting shaft is equipped with a return spring; the return spring has a rubber pad installed at one end near the bottom support plate of the rotating tube transverse moving assembly and an adjusting nut installed at the other end, the top of the rotating tube fixing base has longitudinal tracks symmetrically arranged on the left and right sides, the bottom of the rotating tube transverse moving assembly has a movable slider that moves along the longitudinal track, the longitudinal return of the rotating tube transverse moving assembly is realized by the return spring, and the length of the return spring is adjusted by the adjusting nut, thereby flexibly adjusting the relative position of the rotating tube transverse moving assembly and the rotating tube fixing base, which is ingeniously designed;

[0022] The pipe rotation assembly on the right is fixedly mounted on the fixed slider seat at the right end, while the pipe rotation assembly on the left is mounted on the movable slider seat. A hydraulic push rod is installed between the fixed slider seat at the left end and the pipe rotation assembly on the left, which can push the left pipe rotation assembly along the clamping slide rail to move closer to the right pipe rotation assembly until it clamps the grouting pipe. The pipe rotation assembly includes a main frame, a drive motor reducer, a drive gear mounted on the drive motor reducer shaft, two driven gears meshing with the drive gear, and a rotating pipe drum coaxial with the driven gear. The drive motor reducer of the pipe rotation assembly drives the four rotating pipe drums on the left and right to rotate in the same direction synchronously, thereby tightening the grouting pipe. The design is ingenious.

[0023] More preferably, the longitudinal movement device for the docking pipeline includes a retractable longitudinal grouting sleeve, a longitudinal telescopic hydraulic cylinder, a fixed base, a longitudinal sliding rail mounted on the fixed base, and a moving platform that slides along the longitudinal sliding rail. The front ends of the retractable longitudinal grouting sleeve and the longitudinal telescopic hydraulic cylinder are both fixedly mounted on the moving platform, and the rear ends are both mounted on the ground through pipeline mounting supports. When the longitudinal telescopic hydraulic cylinder extends or retracts, it drives the retractable longitudinal grouting sleeve to extend or retract synchronously, while simultaneously driving the moving platform to slide along the longitudinal sliding rail. The rear end of the outer sleeve of the retractable longitudinal grouting sleeve is slidably mounted on the longitudinal sliding rail through a transverse mounting seat, thereby achieving extension and retraction. The design structure is reasonable.

[0024] The docking pipe lifting device includes a docking lifting column rotatably mounted on a mobile platform and a retractable vertical grouting sleeve mounted on the docking lifting column. Both the upper and lower ends of the retractable vertical grouting sleeve are provided with bent sections. The bottom bent section of the retractable vertical grouting sleeve is connected to the front end of the retractable longitudinal grouting sleeve, and the top bent section is connected to the front end of the grouting pipe. The docking lifting column is provided with sleeve mounting supports for fixing the retractable vertical grouting sleeve at intervals on the upper and lower sides. The docking pipe lifting device is used to adjust the docking height and is reasonably designed.

[0025] The disassembly and assembly lifting column and the docking lifting column both include a square inner column, a square outer shell fitted on the square inner column, and a vertical hydraulic lifting rod that provides lifting drive. The upper and lower ends of the vertical hydraulic lifting rod are respectively hinged to the square outer shell and the square inner column, and the structure is installed stably.

[0026] The top of the disassembly and assembly lifting column is equipped with a base for installing the pipe clamping device, the pipe tightening device, and the pipe rotating device, so that the grouting pipe clamped by the pipe clamping device, the pipe tightening device, and the pipe rotating device is in a longitudinal horizontal state. The reasonable design ensures that the grouting pipe is deviated, which can lead to failure of the docking installation.

[0027] The transverse slide rails are provided with longitudinal racks, and the transverse drive motor reducer is fixed on the right side of the disassembly and assembly lifting column. The rotating shaft is equipped with gears that mesh with the longitudinal racks. Thus, when the transverse drive motor reducer drives the rotating shaft to move laterally along the longitudinal racks, it drives the disassembly and assembly lifting column to move laterally. The design is interlocked, and the docking position can be adjusted laterally by moving the disassembly and assembly lifting column laterally, which is highly flexible.

[0028] The side-rolling cylinder device includes a cylinder push-end mounting base and a side-rolling cylinder installed at the bottom right side of the docking lifting column. The bottom end of the side-rolling cylinder is hinged to the moving platform, and the top end is hinged to the cylinder push-end mounting base, thereby pushing the docking lifting column to rotate.

[0029] More preferably, the grouting pipe hatch opening and closing device includes a hatch fixing seat fitted on the grouting pipe, a hatch opening and closing baffle passing through the hatch fixing seat, and a hatch drive hydraulic rod hinged to the casting template and pushing the hatch opening and closing baffle. The hatch fixing seat includes a loading and unloading guide sleeve, a hatch clamping reaction seat threadedly fitted at the rear of the loading and unloading guide sleeve, and a "T"-shaped sealing pressure ring baffle abutting against the front end face of the loading and unloading guide sleeve. Symmetrically installed on the upper and lower sides of the front side of the hatch clamping reaction seat are baffle movable sliding grooves for the lateral movement of the hatch opening and closing baffle. The rear end face of the baffle movable sliding groove is fixedly installed on the casting template and flush with the rear end face of the hatch opening and closing baffle. The loading and unloading guide sleeve has a middle section with The ring platform has a door tightening handle installed on its front end. One end of the door drive hydraulic rod is hinged to the grouting template, and the other end is hinged to the door opening and closing baffle. The door opening and closing baffle has through holes spaced apart on the left and right sides, matching the inner diameter of the grouting pipe. The left through hole is equipped with a door tightening cover plate, and the right through hole is equipped with a through hole tightening ring plate. When the grouting of the last section is completed and the end of the pipe passes through the right through hole, the door drive hydraulic rod is activated, pushing the left through hole close to the grouting pipe until the door tightening cover plate seals the grouting port on the casting template. It can be tightened by rotating the door tightening handle to achieve automatic sealing, saving time and effort, with high sealing efficiency and good sealing performance, effectively preventing concrete from flowing out.

[0030] The hatch top cover is installed in the left through hole through the hatch sealing gasket, and the through hole top ring plate is installed in the right through hole through the through hole sealing gasket. The hatch opening and closing baffle is assembled from the hatch front opening and closing baffle and the hatch rear opening and closing baffle. The left end of the hatch front opening and closing baffle is provided with a support that is hinged to the telescopic end of the hatch drive hydraulic rod. The rear side of the hatch front opening and closing baffle is provided with an installation groove that matches the size of the hatch rear opening and closing baffle. Thus, the size design is reasonable and the assembly structure of the hatch front opening and closing baffle and the hatch rear opening and closing baffle is stable.

[0031] The through hole has a rearwardly extending flange. The opening diameter of the baffle corresponding to the through hole of the hatch opening and closing baffle matches the outer wall of the flange. The thickness of the baffle is greater than the width of the flange. The rear end face of the baffle is attached to the casting template. The hatch opening and closing front baffle and the hatch opening and closing rear baffle can form an installation step after assembly, so that the hatch sealing gasket and the through hole sealing gasket can be installed in the corresponding through holes respectively. The structure is ingeniously designed and interlocked.

[0032] The loading and unloading guide sleeve and the "T"-shaped sealing pressure ring baffle are equipped with a V-ring, a support ring, a nylon spacer ring, a nylon liner, and a pressure ring to ensure stable installation and tight sealing, and to achieve good sealing effect on the grouting port.

[0033] The hatch opening and closing front baffle and the hatch opening and closing rear baffle are connected by bolts. The "T"-shaped sealing pressure ring baffle is installed on the front end face of the loading and unloading guide sleeve by bolts. The hatch opening and closing front baffle is made of steel, and the hatch opening and closing rear baffle is made of nylon. The combination of soft and hard materials effectively prevents both from breaking at the same time when they are moving relative to each other, reduces maintenance costs, and extends the overall life of the components.

[0034] The beneficial effects of this invention are:

[0035] (1) Compared with the traditional construction method of tunnel secondary lining, which inevitably leads to the phenomenon of voids behind the secondary lining, the current longitudinal grouting process uses a whole grouting pipe to enter and exit, which affects the working space of other processes. This solution uses a longitudinal grouting pipe installation and dismantling system to install multiple grouting pipes to form a whole long pipe, or to disassemble the whole long pipe into several grouting pipes, which greatly reduces the working space of the grouting pipes, thereby avoiding the long pipe occupying too much working space and affecting the overall construction period. The design fits the actual needs and the concept is novel.

[0036] (2) The tunnel lining formwork is reserved with three grouting holes on the left, middle and right. It can be convenient to rotate one of the grouting holes on the left or right side for grouting according to the actual site conditions, and then grouting is performed on the grouting hole in the middle at the top, thus forming a layered pouring, which results in good concrete pouring effect and effectively avoids the situation of insufficient subsequent concrete pouring pressure when only pouring on the left or right side. The design concept is ingenious and highly flexible.

[0037] In summary, it has advantages such as significantly reducing the working space of grouting pipelines, designing to meet actual needs, having a novel concept, and producing good concrete pouring results. Attached Figure Description

[0038] Figure 1 is a front view of the present invention (when working on the grouting hole located in the middle of the tunnel arch).

[0039] Figure 2 is a side view of Figure 1.

[0040] Figure 3 is a schematic diagram of the longitudinal grouting pipe installation and dismantling system.

[0041] Figure 4 is a schematic diagram of the disassembly and assembly of the transverse movement device.

[0042] Figure 5 is a schematic diagram of the pipe clamping device.

[0043] Figure 6 is a schematic diagram of the pipe-twisting device.

[0044] Figure 7 is an exploded view of the parts in Figure 6.

[0045] Figure 8 is a schematic diagram of the spiral tube device.

[0046] Figure 9 is an exploded view of the parts in Figure 8.

[0047] Figure 10 is a schematic diagram of the moving assembly of the docking pipeline.

[0048] Figure 11 is a schematic diagram of the longitudinal movement device for connecting pipes.

[0049] Figure 12 is a schematic diagram of the structure of the docking pipeline lifting device.

[0050] Figure 13 is a partial schematic diagram of the top of the docking pipe lifting device equipped with a pipe clamping device.

[0051] Figure 14 is a schematic diagram of the pipe clamping mechanism.

[0052] Figure 15 is a schematic diagram of the side roller cylinder device installed in the pipe clamping device.

[0053] Figure 16 is a schematic diagram of the structure of the grouting pipe hatch opening and closing device mounted on the grouting pipe.

[0054] Figure 17 is a schematic diagram of the opening and closing device of the grouting pipe hatch.

[0055] Figure 18 is a schematic diagram of the exploded parts in Figure 17.

[0056] Figure 19 is a partial cross-sectional view of the grouting pipe hatch opening and closing device mounted on the grouting pipe.

[0057] Figure 20 is a schematic diagram of the structure of the front baffle for opening and closing the hatch. Detailed Implementation

[0058] The present invention will be further described below with reference to the embodiments and accompanying drawings:

[0059] Referring to Figures 1-20, the specific implementation steps of a modular infinite longitudinal grouting method for tunnel lining are as follows:

[0060] Step S1: Three grouting holes B are reserved symmetrically on the left, middle and right sides of the top of the tunnel lining casting formwork arch for the grouting pipe A to pass through. The left and right sidewalls of the tunnel lining formwork are grouted using the top grouting method.

[0061] Step S2: When the concrete is poured to the arch of the adjacent tunnel lining formwork, several sections of grouting pipe A are installed by threading the ends of the longitudinal grouting pipe installation and removal system. At the same time, each section of grouting pipe A that has been installed is pushed into the grouting hole B located at the top of the tunnel lining casting formwork. Grouting is carried out after several sections of grouting pipe A have been installed and completely placed inside the tunnel lining formwork.

[0062] Step S3: When the grouting height reaches the design height, the grouting pipe A is pulled out section by section and removed using the longitudinal grouting pipe installation and removal system. When the last section of grouting pipe A is pulled out of the tunnel lining formwork, the corresponding grouting hole B is sealed in time.

[0063] Step S4: Perform grouting on one of the grouting holes B on the left and right sides and the grouting hole B located at the top center, in sequence according to steps S2 to S3.

[0064] In step S2, 12 sections of grouting pipe A are installed by threaded connection at both ends, and the length of each section of grouting pipe A is preferably 2m to 2.5m.

[0065] In step S3, when grouting is performed on one of the grouting holes B on the left or right side, the design height is 0m to 0.5m higher than the left and right grouting holes B. When grouting is performed on the grouting hole B located at the top of the middle, the design height is the top of the tunnel lining. The grouting holes B are all in a closed state when not in use.

[0066] The longitudinal grouting pipe installation and dismantling system consists of a docking pipe moving assembly, a grouting pipe dismantling and assembly assembly that longitudinally limits and clamps the grouting pipe A, a dismantling and assembly lateral movement device 6 that drives the grouting pipe dismantling and assembly assembly to move laterally, and a grouting pipe hatch opening and closing device 7 installed on the casting template.

[0067] The docking pipe moving assembly consists of a docking pipe longitudinal moving device 4 and a docking pipe lifting device 5 installed at the moving end of the docking pipe longitudinal moving device 4.

[0068] The top of the connecting pipe lifting device 5 is equipped with a pipe clamping device 8.

[0069] The disassembly and assembly lateral movement device 6 consists of a support frame 61, a lateral movement slide rail 62 mounted on the support frame 61, a disassembly and assembly lifting column 63 that moves along the lateral movement slide rail 62, and a lateral movement drive motor reducer 64 that provides lateral movement force for the disassembly and assembly lifting column 63.

[0070] The grouting pipe assembly consists of a pipe clamping device 1, a pipe tightening device 2, and a pipe rotating device 3, which are installed in parallel from back to front on the top of the disassembly and lifting column 63.

[0071] The pipe clamping device 1 mainly consists of a support base 11 and a pipe clamping mechanism b installed on the support base 11.

[0072] The pipe clamping device 8 consists of a pipe clamping mounting frame 81 that extends rearward from the top of the docking pipe lifting device 5, a clamping slide rail 82 that is laid longitudinally above the pipe clamping mounting frame 81, a pipe clamping mechanism b that moves along the clamping slide rail 82, and a clamping hydraulic cylinder 83 that provides the driving force for movement.

[0073] The pipe tightening device 2 consists of a tiltable and rotatable base 21 and a pipe clamping mechanism b mounted on the tiltable and rotatable base 21.

[0074] The pipe clamping mechanism b consists of a transverse base b4, a pipe clamping slide rail b1 mounted transversely on the transverse base b4, a clamping moving block b2 that slides along the pipe clamping slide rail b1, and an arc-shaped clamping seat b3 mounted on the clamping moving block b2 in a left-right mirror image.

[0075] The swirl device 3 consists of a swirl fixing base 31, a swirl transverse moving assembly 32 that slides longitudinally along the swirl fixing base 31, and a pipe rotating assembly 33 mounted on the swirl transverse moving assembly 32.

[0076] The swivel tube transverse movement assembly 32 consists of a transverse base b4, a tube clamping slide rail b1 transversely mounted on the transverse base b4, and a clamping moving block b2 that slides along the tube clamping slide rail b1.

[0077] The pipe rotation assembly 33 is mounted on the clamping moving block b2 of the pipe lateral movement assembly 32 in a mirror image.

[0078] When the disassembly and assembly lifting column 63 drives the grouting pipe disassembly and assembly assembly to descend and move laterally to make room, the pipe clamping and dragging device 8 moves forward to clamp the grouting pipe A and drags it back to its original position through the docking pipe moving assembly.

[0079] The clamping moving block b2 consists of a main block b21, a fixed slider seat b22 fixed at both ends of the main block b21 and sliding along the clamping tube slide rail b1, and a movable slider seat b23 movably installed in the middle of the main block b21 and sliding along the clamping tube slide rail b1.

[0080] The fixed slider seat b22 located at the left end is equipped with a return spring assembly b5 that is fixed to the transverse base b4.

[0081] The left end of the horizontal base b4 is provided with a return spring mounting seat b41.

[0082] The return spring assembly b5 consists of a spring b51, a spring guide shaft b52, a spring adjusting nut b53 located at the left end of the spring b51, and a spring buffer washer b54 located at the right end of the spring b51.

[0083] The spring guide shaft b52 is threaded, and its right end passes through the fixed slider seat b22 and is fixed by a nut, while its left end passes through the return spring mounting seat b41 and is fixed.

[0084] The spring adjusting nut b53 is threadedly matched with the spring guide shaft b52, thereby adjusting the length of the spring b51 by rotating along the thread of the spring guide shaft b52.

[0085] The arc-shaped clamping seat b3 located on the right is fixedly installed on the fixed slider seat b22 at the right end, and the arc-shaped clamping seat b3 located on the left is installed on the movable slider seat b23.

[0086] A hydraulic push rod b6 is installed between the fixed slider seat b22 on the left and the arc-shaped clamping seat b3 on the left. The hydraulic push rod b6 can push the arc-shaped clamping seat b3 on the left to move along the pipe clamping slide rail b1 and approach the arc-shaped clamping seat b3 on the right to clamp the grouting pipe A.

[0087] The tiltable and rotatable base 21 consists of a base 211 and a clamping mechanism mounting base 212 that is tiltable and rotatable and mounted on the base 211.

[0088] The top of the base 211 is provided with a sliding channel for an arc-shaped sliding path.

[0089] The bottom of the clamping mechanism mounting base 212 is provided with an arc-shaped slide 213 that passes through the sliding channel.

[0090] The sliding passage has a symmetrical groove structure.

[0091] The arc-shaped slide block 213 is symmetrically equipped with guide sliders 215 that match the slots of the sliding channel.

[0092] A pipe-tightening hydraulic rod 214 is hinged between the base 211 and the transverse base b4 of the pipe clamping mechanism b.

[0093] When the hydraulic rod 214 extends or retracts, the guide slider 215 slides along the sliding channel, causing the pipe clamping mechanism b to perform left and right tilting and rotating motions.

[0094] The rotating tube fixing base 31 has a vertical spring shaft mounting plate centered on the front and rear sides.

[0095] The bottom of the swivel tube transverse movement assembly 32 is provided with support plates corresponding to the front and rear of the spring shaft mounting plate.

[0096] A horizontal longitudinal spring mounting shaft 311 is installed between the spring shaft mounting plate and the bottom support plate of the swivel tube transverse moving assembly 32, and each spring mounting shaft 311 is equipped with a return spring.

[0097] The return spring has a rubber pad installed at one end near the bottom support plate of the swivel tube transverse component 32, and an adjusting nut installed at the other end.

[0098] The top of the rotating tube fixing base 31 is symmetrically provided with longitudinal rails 312 on the left and right sides.

[0099] The bottom of the swivel tube transverse moving assembly 32 is provided with a movable slider 321 that moves along the longitudinal track 312, and the longitudinal reset of the swivel tube transverse moving assembly 32 is achieved by a reset spring.

[0100] The pipe rotation assembly 33 located on the right is fixedly mounted on the fixed slider seat b22 at the right end, and the pipe rotation assembly 33 located on the left is mounted on the movable slider seat b23.

[0101] A hydraulic push rod b6 is installed between the left fixed slider seat b22 and the left pipe rotating assembly 33. The hydraulic push rod b6 can push the left pipe rotating assembly 33 to move along the pipe clamping slide rail b1 to approach the right pipe rotating assembly 33 until it clamps the grouting pipe A.

[0102] The pipe rotation assembly 33 consists of a mounting frame 335, a drive motor reducer 332, a drive gear 333 mounted on the shaft of the drive motor reducer 332, two driven gears 334 meshing with the drive gear 333, and a rotating pipe drum 331 coaxially rotating with the driven gear 334.

[0103] The longitudinal movement device 4 for connecting pipelines consists of a retractable longitudinal grouting sleeve 44, a longitudinal telescopic hydraulic cylinder 46, a fixed base 41, a longitudinal sliding rail 42 mounted on the fixed base 41, and a moving platform 43 that slides along the longitudinal sliding rail 42.

[0104] The front ends of the telescopic longitudinal grouting sleeve 44 and the longitudinal telescopic hydraulic cylinder 46 are fixedly installed on the mobile platform 43, and the rear ends are installed on the ground through the pipe mounting bracket 45.

[0105] When the longitudinal telescopic hydraulic cylinder 46 extends or retracts, it drives the telescopic longitudinal grouting sleeve 44 to extend or retract synchronously, while simultaneously driving the mobile platform 43 to slide along the longitudinal slide rail 42.

[0106] The rear end of the retractable longitudinal grouting sleeve 44 is slidably mounted on the longitudinal slide rail 42 via the transverse mounting seat 441.

[0107] The docking pipe lifting device 5 consists of a docking lifting column 52 that can be rotatably installed on a mobile platform 43 and a retractable vertical grouting sleeve 51 installed on the docking lifting column 52.

[0108] The telescopic vertical grouting sleeve 51 has bent sections at both the upper and lower ends.

[0109] The bottom bend of the retractable vertical grouting sleeve 51 is connected to the front end of the retractable longitudinal grouting sleeve 44, and the top bend is connected to the front end of the grouting pipe A.

[0110] The lifting column 52 is provided with sleeve installation supports for fixed and retractable vertical grouting sleeves 51 at intervals on the upper and lower sides.

[0111] The disassembly and assembly of the lifting column 63 and the docking of the lifting column 52 both include a square inner column c1, a square outer shell c2 fitted onto the square inner column c1, and a vertical hydraulic lifting rod c3 that provides lifting drive.

[0112] The upper and lower ends of the vertical hydraulic lifting rod c3 are hinged to the square outer shell c2 and the square inner column c1, respectively.

[0113] The top of the disassembly and assembly lifting column 63 is provided with a base 631 for installing the pipe clamping device 1, the pipe twisting device 2, and the pipe rotating device 3, so that the grouting pipe A clamped by the pipe clamping device 1, the pipe twisting device 2, and the pipe rotating device 3 is in a longitudinal horizontal state.

[0114] A longitudinal rack 65 is provided between the transverse slide rails 62.

[0115] The transverse drive motor reducer 64 is fixed on the right side of the disassembly and assembly lifting column 63, and the rotating shaft is equipped with a gear that meshes with the longitudinal rack 65. Thus, when the transverse drive motor reducer 64 drives the rotating shaft to move laterally along the longitudinal rack 65, it drives the disassembly and assembly lifting column 63 to move laterally.

[0116] The grouting pipe hatch opening and closing device 7 consists of a hatch fixing seat 71 fitted on the grouting pipe A, a hatch opening and closing baffle 72 passing through the hatch fixing seat 71, and a hatch drive hydraulic rod 73 hinged to the casting template and pushing the hatch opening and closing baffle 72.

[0117] The hatch fixing seat 71 consists of a loading and unloading guide sleeve 712, a hatch door clamping reaction seat 711 threaded onto the rear of the loading and unloading guide sleeve 712, and a "T"-shaped sealing pressure ring baffle 713 abutting against the front end of the loading and unloading guide sleeve 712.

[0118] The hatch door clamping reaction seat 711 has symmetrical sliding grooves 714 for the hatch door opening and closing baffle 72 to move laterally, located on the upper and lower sides of its front side.

[0119] The rear end face of the baffle movable slide 714 is fixedly installed on the casting template and is flush with the rear end face of the hatch opening and closing baffle 72.

[0120] The loading and unloading guide sleeve 712 has a ring platform in the middle, and a hatch tightening handle 715 is installed on the front end face of the ring platform.

[0121] One end of the hatch drive hydraulic rod 73 is hinged to the grouting template, and the other end is hinged to the hatch opening and closing baffle 72.

[0122] The hatch opening and closing baffle 72 is provided with through holes 721 at intervals on the left and right sides, which match the inner diameter of the grouting pipe A. The left through hole 721 is equipped with a hatch top tightening cover plate 722, and the right through hole 721 is equipped with a through hole tightening ring plate 726.

[0123] When the grouting of the last section is completed and the end of pipe A passes through the right through hole 721, the hatch drive hydraulic rod 73 is activated, pushing the left through hole 721 close to the grouting pipe A until the hatch top cover plate 722 seals the grouting port on the casting template, and can be tightened by rotating the hatch tightening handle 715.

[0124] The hatch top cover 722 is installed on the left through hole 721 via the hatch sealing gasket 723.

[0125] The through-hole tightening ring plate 726 is installed in the right through-hole 721 through the through-hole sealing gasket 727.

[0126] The hatch opening and closing baffle 72 is assembled from the front hatch opening and closing baffle 724 and the rear hatch opening and closing baffle 725.

[0127] The left end of the hatch opening and closing front baffle 724 is provided with a support that is hinged to the telescopic end of the hatch drive hydraulic rod 73, and the rear side of the hatch opening and closing front baffle 724 is provided with a mounting groove 728 that matches the size of the hatch opening and closing rear baffle 725.

[0128] The through hole 721 has a rearwardly extending flange 729 along its edge. The opening diameter of the baffle 725 corresponding to the through hole 721 after the hatch is opened and closed matches the outer wall of the flange 729, and the thickness of the baffle 725 after the hatch is opened and closed is greater than the width of the flange 729.

[0129] After the hatch is opened and closed, the rear end face of the baffle 725 is attached to the casting template.

[0130] After the hatch opening and closing front baffle 724 and hatch opening and closing rear baffle 725 are assembled, they can form an installation step, thereby allowing the hatch sealing gasket 723 and the through hole sealing gasket 727 to be installed in the corresponding through hole 721 respectively.

[0131] The loading and unloading guide sleeve 712 and the "T"-shaped sealing pressure ring baffle 713 are equipped with a V-ring, a support ring, a nylon spacer ring, a nylon liner, and a pressure ring.

[0132] The front baffle 724 and the rear baffle 725 of the hatch opening and closing are connected by bolts.

[0133] The “T”-shaped sealing pressure ring baffle 713 is installed on the front end face of the loading and unloading guide sleeve 712 by bolts.

[0134] The front baffle 724 of the hatch opening and closing is preferably made of steel, and the rear baffle 725 of the hatch opening and closing is preferably made of nylon.

[0135] A side roller cylinder device 9 is installed on the right side of the pipe lifting device 5, which is used to rotate the pipe lifting device 5 to adjust the docking angle of the tunnel grouting pipe.

[0136] The side-rolling cylinder device 9 consists of a cylinder push end mounting seat 91 installed at the bottom right side of the docking lifting column 52 and a side-rolling cylinder 92.

[0137] The bottom end of the side roller cylinder 92 is hinged to the mobile platform 43, and the top end is hinged to the cylinder push end mounting seat 91, so that it can push and connect the lifting column 52 to rotate.

[0138] When installing multiple grouting pipe sections, the next grouting pipe section is clamped by a pipe clamping device, and the front end of the previous grouting pipe section is clamped by the pipe clamping and dragging device of the connecting pipe moving assembly. Then, the previous grouting pipe section is screwed into the next grouting pipe section by a pipe screwing device, and then tightened with the pipe screwing device. Then, the grouting pipe disassembly and assembly assembly releases the grouting pipe, and the disassembly and assembly lateral movement device lowers and moves laterally to make room. Meanwhile, the connecting pipe moving assembly pushes the grouting pipe along the grouting hole into the tunnel lining. Then, the grouting pipe is released, and the assembly moves backward to install the next pipe section in sequence.

[0139] When multiple grouting pipe sections need to be disassembled, the disassembly and assembly lateral movement device lowers and moves laterally to make room. The pipe clamping and dragging device of the connecting pipe moving assembly clamps the front end of the grouting pipe and then drags it back to its original position. Then, the clamping device clamps the next adjacent grouting pipe section, the screwing device loosens it, and the rotating device completely unscrews the grouting pipe. This process is repeated until all grouting pipe sections are removed. When the last grouting pipe section is pulled out, the grouting pipe hatch opening and closing device 7 automatically closes the grouting hole.

[0140] Following the steps of installing and dismantling the grouting pipes described above, grout the left and right grouting holes in sequence, and then adjust the grouting hole at the middle arch using the side roller cylinder device 9 for grouting.

Claims

1. A modular, stepless longitudinal grouting method for tunnel lining, characterized in that, Includes the following steps: Step S1: Three grouting holes (B) are symmetrically reserved on the left, center, and right sides of the top of the tunnel lining casting formwork arch for the grouting pipes (A) to pass through. Grouting is first carried out on the left and right sidewalls of the tunnel lining formwork using the top-rush grouting method. Step S2: When the concrete is poured to the arc-shaped arch of the adjacent tunnel lining formwork, several sections of grouting pipes (A) are installed by threading the ends of the longitudinal grouting pipe installation and dismantling system. At the same time, each section of the installed grouting pipe (A) is pushed into the grouting hole (B) located on the top of the tunnel lining casting formwork arch. Grouting is carried out after several sections of grouting pipes (A) are installed and completely placed inside the tunnel lining formwork. In step S2, the longitudinal grouting pipe installation and dismantling system includes a pipe moving assembly, a grouting pipe dismantling assembly that longitudinally limits and clamps the grouting pipes (A), and a lateral grouting pipe dismantling assembly that drives the grouting pipe dismantling assembly. The assembly includes a movable disassembly and assembly transverse movement device (6) and a grouting pipe hatch opening and closing device (7) installed on the casting template. The docking pipe moving assembly includes a docking pipe longitudinal movement device (4) and a docking pipe lifting device (5) installed at the moving end of the docking pipe longitudinal movement device (4). A pipe clamping device (8) is installed on the top of the docking pipe lifting device (5). A side roller cylinder device (9) is installed on the right side of the docking pipe lifting device (5) for rotating the docking pipe lifting device (5) to adjust the docking angle of the tunnel grouting pipe. The disassembly and assembly transverse movement device (6) includes a support frame (61), a transverse slide rail (62) installed on the support frame (61), a disassembly and assembly lifting column (63) that moves along the transverse slide rail (62), and a transverse drive motor reducer (64) that provides transverse movement force for the disassembly and assembly lifting column (63).The grouting pipe assembly includes a pipe clamping device (1), a pipe screwing device (2), and a pipe rotating device (3) installed side by side from back to front on the top of the disassembly and lifting column (63). The pipe clamping device (1) includes a support base (11) and a pipe clamping mechanism (b) installed on the support base (11). The pipe clamping device (8) includes a pipe clamping mounting frame (81) extending rearward from the top of the docking pipe lifting device (5), a clamping slide rail (82) laid longitudinally above the pipe clamping mounting frame (81), and a mechanism for moving along the clamping slide rail (82). The pipe clamping mechanism (b) and the clamping hydraulic cylinder (83) providing the driving force for movement are included. The pipe twisting device (2) includes a tiltable rotating base (21) and a pipe clamping mechanism (b) mounted on the tiltable rotating base (21). The pipe clamping mechanism (b) includes a transverse base (b4), a pipe clamping slide rail (b1) mounted transversely on the transverse base (b4), a clamping moving block (b2) sliding along the pipe clamping slide rail (b1), and an arc-shaped clamping seat (b3) mounted left and right mirror images on the clamping moving block (b2). The pipe twisting device (3) includes a pipe twisting fixture. The system includes a fixed base (31), a swivel tube transverse moving assembly (32) that slides longitudinally along the fixed base (31), and a pipe rotating assembly (33) mounted on the swivel tube transverse moving assembly (32). The swivel tube transverse moving assembly (32) includes a transverse base (b4), a pipe clamping slide rail (b1) mounted transversely on the transverse base (b4), and a clamping moving block (b2) that slides along the pipe clamping slide rail (b1). The pipe rotating assembly (33) is mirror-mounted on the clamping moving block (b2) of the swivel tube transverse moving assembly (32). When the lifting column (63) is disassembled, it drives the grouting pipe to disassemble. When the assembly descends and moves laterally to make room, the pipe clamping device (8) moves forward to clamp the grouting pipe (A) and is dragged back to its original position by connecting the pipe moving assembly; Step S3: When the grouting height reaches the design height, the grouting pipe (A) is pulled out section by section and removed by the longitudinal grouting pipe installation and removal system. When the last section of the grouting pipe (A) is pulled out of the tunnel lining template, the corresponding grouting hole (B) is sealed in time; Step S4: Grouting is carried out on one of the grouting holes (B) on the left and right sides and the grouting hole (B) located at the top center in sequence according to steps S2 to S3.

2. The modular infinite longitudinal grouting method for tunnel lining according to claim 1, characterized in that: In step S2, 12 sections of grouting pipe (A) are installed by threaded connection at both ends, and the length of each section of grouting pipe (A) is 2m to 2.5m.

3. The modular infinite longitudinal grouting method for tunnel lining according to claim 1, characterized in that: In step S3, when grouting is performed on one of the grouting holes (B) on the left or right side, the designed grouting height is 0m to 0.5m higher than the left and right grouting holes (B). When grouting is performed on the grouting hole (B) located at the top of the middle, the designed grouting height is the top of the tunnel lining. The grouting holes (B) are all in a closed state when not in use.

4. The modular infinite longitudinal grouting method for tunnel lining according to claim 1, characterized in that: The clamping moving block (b2) includes a main block (b21), fixed slider seats (b22) fixed at both ends of the main block (b21) and sliding along the clamping tube slide rail (b1), and movable slider seats (b23) movably installed in the middle of the main block (b21) and sliding along the clamping tube slide rail (b1). The fixed slider seat (b22) at the left end is equipped with a return spring assembly (b5) fixed on the transverse base (b4). The left end of the horizontal base (b4) is provided with a return spring mounting seat (b41). The return spring assembly (b5) includes a spring (b51), a spring guide shaft (b52), a spring adjusting nut (b53) located at the left end of the spring (b51), and a spring buffer pad (b54) located at the right end of the spring (b51). The spring guide shaft (b52) is threaded, and its right end passes through the fixed slider seat (b22) and is fixed by a nut. Its left end passes through the return spring mounting seat (b41) and is fixed. The spring adjusting nut (b53) is threaded to match the spring guide shaft (b52), thereby adjusting the length of the spring (b51) by rotating along the thread of the spring guide shaft (b52).

5. The modular infinite longitudinal grouting method for tunnel lining according to claim 4, characterized in that: The right-side arc-shaped clamping seat (b3) is fixedly installed on the right-side fixed slider seat (b22), and the left-side arc-shaped clamping seat (b3) is installed on the movable slider seat (b23). A hydraulic push rod (b6) is installed between the left-side fixed slider seat (b22) and the left-side arc-shaped clamping seat (b3), and can push the left-side arc-shaped clamping seat (b3) along the pipe clamping slide rail (b1) to move closer to the right-side arc-shaped clamping seat (b3) to clamp the grouting pipe (A).

6. The modular infinite longitudinal grouting method for tunnel lining according to claim 1, characterized in that: The tiltable and rotatable base (21) includes a base (211) and a clamping mechanism mounting seat (212) that is tiltable and rotatable on the base (211). The top of the base (211) is provided with a sliding channel with an arc sliding path. The bottom of the clamping mechanism mounting seat (212) is provided with an arc-shaped slide seat (213) that passes through the sliding channel. The sliding channel has a symmetrical groove structure. The arc-shaped slide seat (213) is symmetrically installed with guide sliders (215) that match the groove of the sliding channel. A pipe-tightening hydraulic rod (214) is hinged between the base (211) and the transverse base (b4) of the pipe clamping mechanism (b). When the pipe-tightening hydraulic rod (214) extends or retracts, the guide slider (215) slides along the sliding channel, driving the pipe clamping mechanism (b) to tilt and rotate left and right.

7. The modular infinite longitudinal grouting method for tunnel lining according to claim 4, characterized in that: The rotating tube fixing base (31) has a vertical spring shaft mounting plate centered on its front and rear sides. The bottom of the rotating tube transverse moving assembly (32) has a support plate corresponding to the front and rear of the spring shaft mounting plate. A horizontal longitudinal spring mounting shaft (311) is installed between the spring shaft mounting plate and the bottom support plate of the rotating tube transverse moving assembly (32), and each spring mounting shaft (311) is equipped with a return spring. The return spring has a rubber pad installed at one end near the bottom support plate of the rotating tube transverse moving assembly (32) and an adjusting nut installed at the other end. The top of the rotating tube fixing base (31) has longitudinal rails (312) symmetrically arranged on the left and right sides. The bottom of the rotating tube transverse moving assembly (32) has a movable slider (321) that moves along the longitudinal rails (312). The longitudinal return of the rotating tube transverse moving assembly (32) is achieved by the return spring. The pipe rotating assembly (32) is located on the right side. 33) The fixed slider seat (b22) is fixedly installed on the right end, and the pipe rotating assembly (33) located on the left side is installed on the movable slider seat (b23). A hydraulic push rod (b6) is installed between the fixed slider seat (b22) on the left end and the pipe rotating assembly (33) on the left side. The hydraulic push rod (b6) can push the pipe rotating assembly (33) on the left side to move along the pipe clamping slide rail (b1) to approach the pipe rotating assembly (33) on the right side until it clamps the grouting pipe (A). The pipe rotating assembly (33) includes a mounting frame (335), a drive motor reducer (332), a drive gear (333) installed on the shaft of the drive motor reducer (332), two driven gears (334) meshing with the drive gear (333) and a rotating pipe drum (331) coaxial with the driven gear (334).

8. The modular infinite longitudinal grouting method for tunnel lining according to claim 1, characterized in that: The longitudinal moving device (4) for the docking pipeline includes a retractable longitudinal grouting sleeve (44), a longitudinal telescopic hydraulic cylinder (46), a fixed base (41), a longitudinal sliding rail (42) mounted on the fixed base (41), and a moving platform (43) that slides along the longitudinal sliding rail (42). The front ends of the retractable longitudinal grouting sleeve (44) and the longitudinal telescopic hydraulic cylinder (46) are fixedly mounted on the moving platform (43), and the rear ends are mounted on the ground through a pipeline mounting support (45). When the longitudinal telescopic hydraulic cylinder (46) extends or retracts, it drives the retractable longitudinal grouting sleeve (44) to extend or retract synchronously, and at the same time drives the moving platform (43) to slide along the longitudinal sliding rail (42). The outer end of the outer sleeve of the pipe (44) is slidably mounted on the longitudinal slide rail (42) via the transverse mounting seat (441); the docking pipe lifting device (5) includes a docking lifting column (52) rotatably mounted on the mobile platform (43) and a retractable vertical grouting sleeve (51) mounted on the docking lifting column (52). Both the upper and lower ends of the retractable vertical grouting sleeve (51) are provided with bent sections. The bottom bent section of the retractable vertical grouting sleeve (51) is connected to the front end of the retractable longitudinal grouting sleeve (44), and the top bent section is connected to the front end of the grouting pipe (A). The docking lifting column (52) is provided with sleeve installation supports for fixing the retractable vertical grouting sleeve (51) at intervals on the upper and lower sides. The disassembly and assembly lifting column (63) and the docking lifting column (52) both include a square inner column (c1), a square outer shell (c2) fitted on the square inner column (c1), and a vertical hydraulic lifting rod (c3) that provides lifting drive. The upper and lower ends of the vertical hydraulic lifting rod (c3) are respectively hinged to the square outer shell (c2) and the square inner column (c1). The top of the disassembly and assembly lifting column (63) is provided with a base (631) for installing the pipe clamping device (1), the pipe tightening device (2), and the pipe rotating device (3), so that the grouting pipe (A) clamped by the pipe clamping device (1), the pipe tightening device (2), and the pipe rotating device (3) is in a longitudinal horizontal state. The transverse sliding rails (62) are provided with There is a longitudinal rack (65), and the transverse drive motor reducer (64) is fixed on the right side of the disassembly and assembly lifting column (63). The shaft is equipped with a gear that meshes with the longitudinal rack (65). When the transverse drive motor reducer (64) drives the shaft to move laterally along the longitudinal rack (65), it drives the disassembly and assembly lifting column (63) to move laterally. The side roller cylinder device (9) includes a cylinder push end mounting seat (91) and a side roller cylinder (92) installed at the bottom right side of the docking lifting column (52). The bottom end of the side roller cylinder (92) is hinged to the moving platform (43), and the top end is hinged to the cylinder push end mounting seat (91), so that it can push the docking lifting column (52) to rotate.

9. The modular infinite longitudinal grouting method for tunnel lining according to claim 1, characterized in that: The grouting pipe hatch opening and closing device (7) includes a hatch fixing seat (71) fitted on the grouting pipe (A), a hatch opening and closing baffle (72) passing through the hatch fixing seat (71), and a hatch drive hydraulic rod (73) hinged to the casting template and pushing the hatch opening and closing baffle (72). The hatch fixing seat (71) includes a loading and unloading guide sleeve (712), a hatch clamping reaction seat (711) threaded on the rear of the loading and unloading guide sleeve (712), and a "T"-shaped sealing pressure ring baffle (713) abutting the front end face of the loading and unloading guide sleeve (712). The hatch clamping reaction seat (711) has baffle movable slide grooves (714) symmetrically installed on the upper and lower sides of the front side for the hatch opening and closing baffle (72) to move laterally. The rear end face of the movable slide (714) is fixedly installed on the casting template and flush with the rear end face of the hatch opening and closing baffle (72); the loading and unloading guide sleeve (712) is provided with a ring platform in the middle, and the front end face of the ring platform is equipped with a hatch tightening handle (715); one end of the hatch drive hydraulic rod (73) is hinged to the grouting template, and the other end is hinged to the hatch opening and closing baffle (72); the hatch opening and closing baffle (72) is provided with through holes (721) at intervals on the left and right sides that match the inner diameter of the grouting pipe (A), and the left through hole (721) is equipped with a hatch top tightening cover plate (722), and the right through hole (721) is equipped with a through hole top tightening ring plate (726); when the last section of grouting is completed, the end of the pipe (A) passes through the right through hole. When (721) is activated, the hatch drive hydraulic rod (73) is started, pushing the left through hole (721) close to the grouting pipe (A) until the hatch top cover plate (722) seals the grouting port on the casting template, and can be rotated and tightened by the hatch tightening handle (715); the hatch top cover plate (722) is installed in the left through hole (721) through the hatch sealing gasket (723), the through hole top ring plate (726) is installed in the right through hole (721) through the through hole sealing gasket (727), the hatch opening and closing baffle (72) is assembled from the hatch opening and closing front baffle (724) and the hatch opening and closing rear baffle (725) front and rear, the left end of the hatch opening and closing front baffle (724) is provided with a hinge to the telescopic end of the hatch drive hydraulic rod (73). The support is connected, and the rear side of the hatch opening and closing front baffle (724) is provided with an installation groove (728) that matches the size of the hatch opening and closing rear baffle (725); the edge of the through hole (721) is provided with a rearwardly extending flange (729), the opening diameter of the hatch opening and closing rear baffle (725) at the corresponding through hole (721) matches the outer wall of the flange (729), and the thickness of the hatch opening and closing rear baffle (725) is greater than the width of the flange (729). The rear end face of the hatch opening and closing rear baffle (725) is attached to the casting template. After the hatch opening and closing front baffle (724) and the hatch opening and closing rear baffle (725) are assembled, they can form an installation step, so that the hatch sealing gasket (723) and the through hole sealing gasket (727) are respectively installed in the corresponding through hole (721).A V-ring, support ring, nylon spacer, nylon liner, and pressure ring are built into the loading / unloading guide sleeve (712) and the "T"-shaped sealing pressure ring baffle (713); the hatch opening / closing front baffle (724) and the hatch opening / closing rear baffle (725) are bolted together, and the "T"-shaped sealing pressure ring baffle (713) is bolted to the front end face of the loading / unloading guide sleeve (712); the hatch opening / closing front baffle (724) is made of steel, and the hatch opening / closing rear baffle (725) is made of nylon.

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