Integrated equipment and method for rapid sealing and rescue of shield tunnels

Abstract

The present invention discloses an integrated device for rapid and sealed rescue of a shield tunnel and a rescue method, which are characterized by comprising a movable platform, a telescopic platform for a sealed device, a visual sealing system, a sealed grouting system and a PLC controller. The rescue method comprises the steps of (1) positioning the integrated device for rapid and sealed rescue of a shield tunnel; (2) putting the visual sealing system in place; (3) putting the monitoring device in place and collecting initial values; (4) putting the sealed grouting system in place; (5) performing plugging grouting; (6) performing reinforcing grouting; and (7) dismantling equipment, grinding excess grouting bodies, and restoring equipment in the tunnel. The method has the advantages of performing mechanized operations in a fully enclosed and visual environment, thereby improving safety and speed.

Description

Technical Field

[0001] The invention relates to the field of urban rail transit, and in particular to integrated equipment and a method for rapid and airtight rescue of a shield tunnel. Background Art

[0002] The subway is an important livelihood project, and its safety protection is extremely important. Subway tunnels are widely distributed in cities. During the construction of municipal engineering projects, shield tunnels may be damaged due to improper operation, such as drill rods penetrating tunnels during geological exploration, pile foundations penetrating tunnels, etc. After penetration, in order to ensure the safety of subway operations, the tunnel must be stopped for repair. Too long a subway shutdown will cause a greater social impact. At the same time, how to safely and quickly repair the tunnel after it is penetrated is also a major problem. There is no mature emergency rescue equipment and methods. At present, most of them adopt in vitro grouting or even freezing reinforcement, and then cut or remove the driven objects (drill rods, piles) to further reinforce the tunnel. This method takes a long time to repair and is difficult to protect safety. If the reinforcement is not in place, it is easy to cause soil influx during the removal of the driven objects, causing secondary disasters. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a shield tunnel rapid closed rescue integrated equipment and rescue method which can perform mechanized operations in a fully closed and visualized environment to improve safety and speed.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] 1. An integrated equipment for rapid sealing and rescue of a shield tunnel, comprising a movable platform, a telescopic platform for a sealing device, a visual sealing system, a closed grouting system and a PLC controller; the telescopic platform for the sealing device comprises a first bottom plate, a first top plate located above the first bottom plate, and four first jacking devices evenly distributed between the first bottom plate and the first top plate, the first bottom plate is arranged on the movable platform, the bottom of the first jacking device is fixed to the first bottom plate and the telescopic rod at the top is connected to the first top plate; the visual sealing system comprises a second bottom plate, a second top plate located above the second bottom plate, and four second jacking devices evenly distributed between the second bottom plate and the second top plate, the bottom of the second jacking device is fixed to the second bottom plate and the telescopic rod at the top is connected to the second top plate through a ball joint, the second bottom plate is arranged on the first top plate, and the upper surface of the second top plate is an arc with the same height as the first top plate. The shield tunnel segments are in the same arc shape, a circle of U-shaped grooves is arranged on the upper surface edge of the second top plate, a circle of pressure sealing pads with the top extending out of the U-shaped grooves is arranged in the U-shaped grooves, and a ball valve is installed at the middle circular hole of the second top plate; the closed grouting system includes a sliding grouting pipe, a grouting instrument for outputting slurry to the sliding grouting pipe, and an airbag sealing device for sealing the gap between the sliding grouting pipe and the shield tunnel segment, the sliding grouting pipe is inserted into the grouting space of the shield tunnel segment through the ball valve, the grouting instrument is connected to the sliding grouting pipe through a slurry conveying pipe, the airbag sealing device is arranged between the outer wall of the sliding grouting pipe and the shield tunnel segment, the airbag sealing device is connected with an inflator, the grouting instrument and the inflator are located on the movable platform, and the grouting instrument and the inflator are both connected to the PLC controller through cables.

[0006] Preferably, the movable platform comprises a storage platform, a plurality of wheel pairs are arranged at the bottom of the storage platform, and brakes are installed on the wheel pairs.

[0007] Preferably, a temporary membrane is attached to the side of the second top plate facing the shield tunnel segment to ensure that the grouting body is adhered to the temporary membrane after the grouting reinforcement is completed, and the second top plate can be directly and quickly removed to ensure that the protruding part of the grouting body from the segment can be quickly chiseled off and polished flat.

[0008] Preferably, a lighting device and a monitoring camera are installed on the side of the second top plate facing the shield tunnel segment, so as to ensure that the situation in the sealing system can be observed in real time during the operation.

[0009] Preferably, the side of the pressure seal facing the shield tunnel segment is an arc shape with the same curvature as the shield tunnel segment, and the other side of the pressure seal surface is provided with two circles of semicircular grooves. The curvature consistent with the tunnel segment maintains a close fit state, and the other side is provided with two semicircular grooves to ensure that the pressure seal can be compressed under pressure.

[0010] Preferably, the ball head of the ball joint is connected to the top telescopic rod of the second jacking device, and the base of the ball joint is fixed to the lower surface of the second top plate.

[0011] Preferably, the airbag sealing device includes an airbag ring tube sleeved on the outer wall of the sliding grouting pipe, the sliding grouting pipe can slide in the airbag ring tube, the top outer wall groove of the airbag ring tube is tightly embedded with the first airbag and the second airbag, the inflator is connected to the airbag ring tube through the first air injection tube and communicated with the first airbag, and the inflator is connected to the airbag ring tube through the second air injection tube and communicated with the second airbag. The inflator can control the pressure values ​​of the first airbag and the second airbag. The purpose of setting the airbag is to prevent the soil and slurry outside the tunnel from entering the enclosed space formed by the visual sealing system during the process of pulling out the driven object and the grouting process. The safety is improved by setting two airbags and the risk of airbag failure is reduced.

[0012] Preferably, it also includes a monitoring device and a telescopic platform for monitoring the cross-sectional deformation, heave deformation and horizontal deformation of the shield tunnel, the telescopic platform of the monitoring device includes a third bottom plate, a third top plate located above the third bottom plate and four third jacking devices evenly distributed between the third bottom plate and the third top plate, the monitoring device is located on the third bottom plate, and the monitoring device is connected to the PLC controller via a cable. The grouting pressure and grouting amount of the grouting instrument, the air pressure output by the aerator, and the monitoring data measured by the monitoring device can be transmitted to the PLC controller; the PLC controller can control the grouting pressure and grouting amount of the grouting instrument, the air pressure output by the aerator, and the monitoring frequency of the monitoring device.

[0013] Preferably, the first lifting device, the second lifting device and the third lifting device are all hydraulic jacks, and the hydraulic jacks are equipped with displacement mechanical locks. After the lifting device is lifted to a certain position, opening the mechanical lock can ensure that the lifting device will not expand or contract due to changes in pressure.

[0014] 2. A shield tunnel rapid sealing and rescue method based on the above-mentioned shield tunnel rapid sealing and rescue integrated equipment, comprising the following steps:

[0015] (1) Positioning of integrated equipment for rapid and airtight rescue of shield tunnels

[0016] According to the driving position of the driven object in the shield tunnel, the shield tunnel rapid sealing emergency integrated equipment is driven along the tunnel track to the corresponding position, and the movable platform, the telescopic platform of the sealing device, and the visual sealing system are fine-tuned until the ball valve of the visual sealing system is vertically aligned with the driven object;

[0017] (2) Visualize the sealing system in place

[0018] After the positioning of the integrated equipment for rapid sealing and rescue of the shield tunnel is completed, the parking system of the wheel set is opened to fix it on the tunnel track, and the contact network equipment in the tunnel is temporarily removed. The first jacking device of the telescopic platform of the sealing device is further opened to allow the visual sealing system to move upward with the first top plate. After moving to the designated position, the mechanical lock of the first jacking device is opened; the second jacking device is opened to allow the second top plate to move upward with the second jacking device until the pressure sealing pad is tightly attached to the shield tunnel segment and a certain extrusion pressure is formed; the size of the extrusion pressure must ensure that the soil and slurry outside the tunnel will not flow out through the gap between the pressure sealing pad and the shield tunnel segment during the process of pulling out the driven object and the grouting process. The extrusion pressure is provided by the second jacking device, and its size is determined comprehensively based on the environmental characteristics, the structure of the tunnel segment, the size of the driven object, etc. The extrusion pressure can be adjusted in real time according to the on-site situation through the jacking force of the second jacking device;

[0019] (3) The monitoring device is in place and the initial value is collected

[0020] The third jacking device is started to jack up the third top plate, so that the monitoring device rises with the rise of the third top plate. After rising to the specified position, the mechanical lock of the third jacking device is opened, and the values ​​of the cross-sectional deformation, heave deformation and horizontal deformation of the shield tunnel are collected through the monitoring device;

[0021] (4) The closed grouting system is in place.

[0022] Open the ball valve, insert the sliding grouting pipe into the ball valve, and further slowly remove the driven object driven into the shield tunnel segment. As the driven object is removed, the sliding grouting pipe is synchronously inserted into the hole formed by the driven object. When the first airbag and the second airbag completely enter the hole formed by the driven object, the driven object is stopped from being removed. The first airbag and the second airbag are inflated to the preset air pressure value. After the air pressure is formed, the driven object is removed. At the same time, the spatial state between the visual sealing system and the shield tunnel segment is observed in real time through the monitoring camera device, and the pressure value of the first airbag and the second airbag is adjusted. If there is mud and water seepage, the pressure value of the first airbag and the second airbag should be increased in time.

[0023] (5) Carry out plugging grouting

[0024] The sliding grouting pipe is slid outward along the airbag ring pipe, so that the grouting hole of the sliding grouting pipe is exposed outside the airbag ring pipe, and the first type of grouting construction is started. During the grouting process, the grouting pressure of the closed grouting system, the first airbag pressure, the second airbag pressure and the deformation of the tunnel are monitored in real time by the PLC controller, and the pressure value of the first airbag and the pressure value of the second airbag are always controlled between - times of the grouting pressure. When the deformation value of the tunnel is greater than the set deformation threshold, the PLC controller directly controls the closed grouting system to stop grouting, and then the operation is carried out after further analysis;

[0025] (6) Carry out reinforcement grouting

[0026] After the grouting body is sealed and solidified, the pressure of the first and second airbags is released, and the space state between the visual sealing system and the shield tunnel segment is observed by a monitoring camera device. If there is no muddy water flowing out, the reinforcement grouting is started. The preferred reinforcement grouting slurry is a fast-solidifying high-strength epoxy resin;

[0027] (7) Equipment dismantling, grinding of excess grouting, and equipment restoration in the tunnel

[0028] After the reinforcement grouting body solidifies, the visual sealing system is removed, and the temporary diaphragm is bonded to the reinforcement grouting body to enable the second top plate to be quickly removed. After the visual sealing system is removed, the excess reinforcement grouting body is chiseled out and polished to be flush with the original shield tunnel segment. After the polishing is completed, the equipment in the tunnel of the contact network is restored, and the entire rescue process is completed.

[0029] Compared with the prior art, the advantages of the present invention are: the present invention proposes for the first time an integrated equipment and method for rapid and sealed rescue of a shield tunnel, the system can be completed in a fully enclosed environment with high safety; high degree of automation and rapid rescue; visualization and enhanced safety; low cost; rapid and sealed rescue equipment, integration of a full set of equipment, with the advantages of mechanized operation in a fully enclosed and visualized environment, improving safety and speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of the integrated equipment for rapid sealing and emergency rescue of a shield tunnel according to the present invention;

[0031] Figure 2 A schematic diagram of the longitudinal section of the visual sealing system;

[0032] Figure 3 A top view to visualize the sealing system;

[0033] Figure 4 It is a structural schematic diagram of a closed grouting system;

[0034] Figure 5 This is a schematic diagram of plugging grouting;

[0035] Figure 6 This is a schematic diagram of reinforcement grouting;

[0036] Figure 7 This is a schematic diagram of the tunnel after restoration;

[0037] 1- movable platform, 2- telescopic platform of closed device, 3- visual sealing system, 4- closed grouting system, 5- PLC controller, 6- telescopic platform of monitoring device, 7- monitoring device, 8- shield tunnel segment, 9- driven object, 101- plugging grouting body, 102- reinforcement grouting body;

[0038] 11-wheel set, 12-storage platform;

[0039] 21-first bottom plate, 22-first lifting device, 23-first top plate;

[0040] 31-second bottom plate, 32-second top plate, 33-second lifting device, 34-ball joint, 35-ball valve, 36-pressure sealing pad, 37-temporary diaphragm, 38-illumination device, 39-monitoring camera device; 310-mouth-shaped groove; 311-semicircular groove;

[0041] 41-grouting instrument, 42-aerator, 43-slurry delivery pipe, 44-first air injection pipe, 45-second air injection pipe, 46-sliding grouting pipe, 47-air bag ring pipe, 48-first air bag, 49-second air bag;

[0042] 61 - third bottom plate, 62 - third lifting device, 63 - third top plate. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below with reference to the accompanying drawings. Specific embodiment 1

[0045] An integrated equipment for rapid sealing and emergency rescue of shield tunnels, such as Figure 1 As shown, it includes a movable platform 1, a closed device telescopic platform 2, a visual sealing system 3, a closed grouting system 4 and a PLC controller 5;

[0046] The closed device telescopic platform 2 comprises a first bottom plate 21, a first top plate 23 located above the first bottom plate 21, and four first jacking devices 22 evenly distributed between the first bottom plate 21 and the first top plate 23. The first bottom plate 21 is arranged on the movable platform 1, the bottom of the first jacking device 22 is fixed on the first bottom plate 21, and the telescopic rod at the top thereof is connected to the first top plate 23;

[0047] like Figure 2 and Figure 3As shown, the visualized sealing system 3 includes a second bottom plate 31, a second top plate 32 located above the second bottom plate 31, and four second jacking devices 33 evenly distributed between the second bottom plate 31 and the second top plate 32. The bottom of the second jacking device 33 is fixed on the second bottom plate 31 and the telescopic rod on the top is connected to the second top plate 32 through a ball joint 34. The second bottom plate 31 is arranged on the first top plate 23. The upper surface of the second top plate 32 is an arc shape with a curvature consistent with the shield tunnel segment 8. A circle of square grooves 310 are arranged on the edge of the upper surface of the second top plate 32. A circle of pressure sealing pads 36 with the top extending out of the square grooves 310 are arranged in the square grooves 310. A ball valve 35 is installed at the middle circular hole of the second top plate 32.

[0048] like Figure 1 and Figure 4 As shown, the closed grouting system 4 includes a sliding grouting pipe 46, a grouting device 41 for outputting slurry to the sliding grouting pipe 46, and an airbag sealing device for sealing the gap between the sliding grouting pipe 46 and the shield tunnel segment 8. The sliding grouting pipe 46 is inserted into the grouting space of the shield tunnel segment 8 through the ball valve 35. The grouting device 41 is connected to the sliding grouting pipe 46 through the slurry conveying pipe 43. The airbag sealing device is arranged between the outer wall of the sliding grouting pipe 46 and the shield tunnel segment 8. The airbag sealing device is connected to the inflator 42. The grouting device 41 and the inflator 42 are located on the movable platform 1. The grouting device 41 and the inflator 42 are both connected to the PLC controller 55 through cables.

[0049] In this specific embodiment, Figure 1 As shown, the movable platform 1 includes a storage platform 12, and a plurality of wheel sets 11 are arranged at the bottom of the storage platform 12, and brakes (not shown in the figure) are installed on the wheel sets 11. Figure 2 and Figure 3 As shown, a temporary diaphragm 37 is adhered to the side of the second top plate 32 facing the shield tunnel segment 8. To ensure that the grouting body is adhered to the temporary diaphragm 37 after the grouting reinforcement is completed, the second top plate 32 can be directly and quickly removed, and the protruding part of the grouting body from the segment can be quickly chiseled off and polished. A lighting device 38 and a monitoring camera device 39 are installed on the side of the second top plate 32 facing the shield tunnel segment 8. The side of the pressure sealing pad 36 facing the shield tunnel segment 8 is an arc shape with a curvature consistent with the shield tunnel segment 8, and two circles of semicircular grooves 311 are provided on the other side of the pressure sealing pad 36. The ball head of the ball joint 34 is connected to the top telescopic rod of the second jacking device 33, and the base of the ball joint 34 is fixed on the lower surface of the second top plate 32.

[0050] In this specific embodiment, Figure 1 and Figure 4As shown, the airbag sealing device includes an airbag ring tube 47 (an annular hollow steel tube) sleeved on the outer wall of the sliding grouting tube 46, the sliding grouting tube 46 can slide in the airbag ring tube 47, and the first airbag 48 and the second airbag 49 are tightly embedded in the top outer wall groove of the airbag ring tube 47. The inflator 42 is connected to the airbag ring tube 47 through the first air injection tube 44 and is connected to the first airbag 48. The inflator 42 is connected to the airbag ring tube 47 through the second air injection tube 45 and is connected to the second airbag 49.

[0051] In this specific embodiment, Figure 1 As shown, the shield tunnel rapid sealing emergency rescue integrated equipment also includes a monitoring device 7 for monitoring the cross-sectional deformation, heave deformation and horizontal deformation of the shield tunnel and a telescopic platform 6 of the monitoring device 7. The telescopic platform 6 of the monitoring device 7 includes a third bottom plate 61, a third top plate 63 located above the third bottom plate 61, and four third jacking devices 62 evenly distributed between the third bottom plate 61 and the third top plate 63. The monitoring device 7 is located on the third bottom plate 61, and the monitoring device 7 is connected to the PLC controller 5 through a cable. The grouting pressure and grouting amount of the grouting instrument 41, the air pressure output by the aerator 42, and the monitoring data measured by the monitoring device 7 can be transmitted to the PLC controller 5; the PLC controller 5 can control the grouting pressure and grouting amount of the grouting instrument 41, the air pressure output by the aerator 42, and the monitoring frequency of the monitoring device 7. The monitoring device 7 is a total station.

[0052] In this specific embodiment, the first lifting device 22, the second lifting device 33, and the third lifting device 62 are all hydraulic jacks, and a displacement mechanical lock is installed on the hydraulic jack. After the lifting device is lifted to a certain position, opening the mechanical lock can ensure that the lifting device will not expand or contract due to changes in pressure. Specific embodiment 2

[0054] A shield tunnel rapid sealing and rescue method based on the above-mentioned specific embodiment 1 shield tunnel rapid sealing and rescue integrated equipment comprises the following steps:

[0055] (1) Positioning of integrated equipment for rapid and airtight rescue of shield tunnels

[0056] According to the driving position of the driven object 9 of the shield tunnel, the shield tunnel rapid sealing emergency integrated equipment is driven to the corresponding position along the tunnel track, and the movable platform 1, the sealing device telescopic platform 2, and the visual sealing system 3 are fine-tuned until the ball valve 35 of the visual sealing system 3 is vertically aligned with the driven object 9, such as Figure 1 As shown;

[0057] (2) Visualize the sealing system 3 in place

[0058] After the positioning of the integrated equipment for rapid sealing and emergency rescue of the shield tunnel is completed, the parking system of the wheel set 11 is opened to fix it on the tunnel track, and the contact network equipment in the tunnel is temporarily removed. The first jacking device 22 of the telescopic platform 2 of the sealing device is further opened to make the visual sealing system 3 move upward with the first top plate 23. After moving to the specified position, the mechanical lock of the first jacking device 22 is opened; the second jacking device 33 is opened to make the second top plate 32 move upward with the second jacking device 33 until the pressure sealing pad 36 is in close contact with the shield tunnel segment 8 and forms a certain extrusion pressure; the magnitude of the extrusion pressure should ensure that the soil and slurry outside the tunnel will not flow out through the gap between the pressure sealing pad 36 and the shield tunnel segment 8 during the extraction process of the driven object 9 and the grouting process. The extrusion pressure is provided by the second jacking device 33, and its magnitude should be comprehensively determined according to the environmental characteristics, the structure of the tunnel segment, the size of the driven object 9, etc. The extrusion pressure can be adjusted in real time according to the on-site situation through the jacking force of the second jacking device 33;

[0059] (3) The monitoring device 7 is in place and collects initial values

[0060] The third jacking device 62 is started to jack up the third top plate 63, so that the monitoring device 7 rises with the rise of the third top plate 63. After rising to the specified position, the mechanical lock of the third jacking device 62 is opened, and the values ​​of the cross-sectional deformation, heave deformation and horizontal deformation of the shield tunnel are collected through the monitoring device 7;

[0061] (4) Closed grouting system 4 is in place

[0062] Open the ball valve 35, insert the sliding grouting pipe 46 into the ball valve 35, and further slowly remove the driven object 9 driven into the shield tunnel segment 8. As the driven object 9 is removed, the sliding grouting pipe 46 is synchronously inserted into the hole formed by the driven object 9. When the first airbag 48 and the second airbag 49 completely enter the hole formed by the driven object 9, the driven object 9 is stopped from being removed. The first airbag 48 and the second airbag 49 are inflated to a preset air pressure value. After the air pressure is formed, the driven object 9 is removed. At the same time, the spatial state between the visual sealing system 3 and the shield tunnel segment 8 is observed in real time through the monitoring camera device 39, and the pressure values ​​of the first airbag 48 and the second airbag 49 are adjusted. If there is mud and water seepage, the pressure values ​​of the first airbag 48 and the second airbag 49 should be increased in time.

[0063] (5) Carry out plugging grouting,

[0064] The sliding grouting pipe 46 is slid outward along the airbag ring tube 47 to expose the grouting hole of the sliding grouting pipe 46 outside the airbag ring tube 47, and a type of grouting construction is started. The slurry used in this process is preferably cement-water-glass double liquid slurry, which has a rapid solidification effect. For the purpose of plugging, the grouting process monitors the grouting pressure of the closed grouting system 4, the pressure of the first airbag 48, the pressure of the second airbag 49 and the deformation of the tunnel in real time through the PLC controller 5, and the pressure value of the first airbag 48 and the pressure value of the second airbag 49 are always controlled between 3-5 times the grouting pressure. When the deformation value of the tunnel is greater than the set deformation threshold, the PLC controller 5 directly controls the closed grouting system 4 to stop grouting, and then performs the operation after further analysis. The schematic diagram of the plugging grouting body 101 is as shown in FIG. Figure 5 As shown;

[0065] (6) Carry out reinforcement grouting

[0066] After the grouting body 101 is sealed and solidified, the pressure of the first airbag 48 and the second airbag 49 is released, and the spatial state between the visual sealing system 3 and the shield tunnel segment 8 is observed by the monitoring camera device 39. If there is no muddy water flowing out, the reinforcement grouting is started. The preferred reinforcement grouting slurry is a fast-solidifying high-strength epoxy resin. The reinforcement grouting body 102 formed is as follows. Figure 6 As shown;

[0067] (7) Equipment dismantling, grinding of excess grouting, and restoration of equipment in the tunnel.

[0068] After the reinforcement grouting body 102 solidifies, the visual sealing system 3 is removed, and the temporary diaphragm 37 is bonded to the reinforcement grouting body 102, so that the second top plate 32 can be quickly removed; after the visual sealing system 3 is removed, the excess reinforcement grouting body 102 is chiseled off and polished to be flush with the original shield tunnel segment 8, such as Figure 7 As shown, after the grinding is completed, the equipment in the tunnel of the contact network is restored, and the entire rescue process is completed.

[0069] The above description is not intended to limit the present invention, and the present invention is not limited to the above examples. Any changes, modifications, additions or substitutions made by a person skilled in the art within the spirit and scope of the present invention shall also fall within the protection scope of the present invention.

Claims

1. An integrated equipment for rapid sealing and emergency rescue of a shield tunnel, characterized by: It includes a movable platform, a telescopic platform for closed devices, a visual sealing system, a closed grouting system and a PLC controller; The enclosed device telescopic platform comprises a first bottom plate, a first top plate located above the first bottom plate, and four first lifting devices uniformly distributed between the first bottom plate and the first top plate, wherein the first bottom plate is arranged on the movable platform, the bottom of the first lifting device is fixed on the first bottom plate and the telescopic rod at the top thereof is connected to the first top plate; The visualization sealing system comprises a second bottom plate, a second top plate located above the second bottom plate, and four second lifting devices uniformly distributed between the second bottom plate and the second top plate, the bottom of the second lifting device is fixed on the second bottom plate and the telescopic rod on the top is connected to the second top plate through a ball joint, the second bottom plate is arranged on the first top plate, the upper surface of the second top plate is an arc shape with a curvature consistent with the shield tunnel segment, a circle of U-shaped grooves is arranged on the edge of the upper surface of the second top plate, a circle of pressure sealing pads with the top extending out of the U-shaped grooves is arranged in the U-shaped grooves, and a ball valve is installed at the middle circular hole of the second top plate; The closed grouting system comprises a sliding grouting pipe, a grouting instrument for outputting slurry to the sliding grouting pipe, and an airbag sealing device for sealing the gap between the sliding grouting pipe and the shield tunnel segment. The sliding grouting pipe is inserted into the grouting space of the shield tunnel segment through the ball valve. The grouting instrument is connected to the sliding grouting pipe through a slurry conveying pipe. The airbag sealing device is arranged between the outer wall of the sliding grouting pipe and the shield tunnel segment. The airbag sealing device is connected to an inflator. The grouting instrument and the inflator are located on the movable platform. The grouting instrument and the inflator are both connected by a line The cable is connected to the PLC controller, a temporary diaphragm is adhered to the side of the second top plate facing the shield tunnel segment, a lighting device and a monitoring camera device are installed on the side of the second top plate facing the shield tunnel segment, and also includes a monitoring device and a telescopic platform for monitoring the cross-sectional deformation, heave deformation and horizontal deformation of the shield tunnel, the telescopic platform of the monitoring device includes a third bottom plate, a third top plate located above the third bottom plate, and four third jacking devices evenly distributed between the third bottom plate and the third top plate, the monitoring device is located on the third bottom plate, and the monitoring device is connected to the PLC controller through a cable.

2. The integrated equipment for rapid sealing and emergency rescue of a shield tunnel according to claim 1, characterized in that: The movable platform comprises a storage platform, a plurality of wheel pairs are arranged at the bottom of the storage platform, and brakes are installed on the wheel pairs.

3. The integrated equipment for rapid sealing and emergency rescue of a shield tunnel according to claim 1, characterized in that: The side of the pressure sealing pad facing the shield tunnel segment is in an arc shape with a curvature consistent with the shield tunnel segment, and the other side of the pressure sealing pad surface is provided with two circles of semicircular grooves.

4. The integrated equipment for rapid sealing and emergency rescue of a shield tunnel according to claim 1, characterized in that: The ball head of the ball joint is connected to the top telescopic rod of the second jacking device, and the base of the ball joint is fixed on the lower surface of the second top plate.

5. The integrated equipment for rapid sealing and emergency rescue of a shield tunnel according to claim 1, characterized in that: The airbag sealing device includes an airbag ring tube sleeved on the outer wall of the sliding grouting pipe, the sliding grouting pipe can slide in the airbag ring tube, the first airbag and the second airbag are tightly embedded in the top outer wall groove of the airbag ring tube, the inflator is connected to the airbag ring tube through the first air injection tube and is connected to the first airbag, and the inflator is connected to the airbag ring tube through the second air injection tube and is connected to the second airbag.

6. The integrated equipment for rapid sealing and emergency rescue of a shield tunnel according to claim 5, characterized in that: The first lifting device, the second lifting device and the third lifting device are all hydraulic jacks, and displacement mechanical locks are installed on the hydraulic jacks.

7. A method for rapid sealing and rescue of a shield tunnel based on the integrated equipment for rapid sealing and rescue of a shield tunnel according to claim 1, characterized in that The following steps are involved: (1) Positioning of integrated equipment for rapid and airtight rescue of shield tunnels According to the driving position of the driven object in the shield tunnel, the shield tunnel rapid sealing emergency integrated equipment is driven along the tunnel track to the corresponding position, and the movable platform, the telescopic platform of the sealing device, and the visual sealing system are fine-tuned until the ball valve of the visual sealing system is vertically aligned with the driven object; (2) Visualize the sealing system in place After the positioning of the integrated equipment for rapid sealing and rescue of the shield tunnel is completed, the parking system of the wheelset is opened to fix it on the tunnel track, and the contact network equipment in the tunnel is temporarily removed. The first jacking device of the telescopic platform of the sealing device is further opened to allow the visual sealing system to move upward with the first top plate. After moving to the designated position, the mechanical lock of the first jacking device is opened; the second jacking device is opened to allow the second top plate to move upward with the second jacking device until the pressure sealing pad is in close contact with the shield tunnel segment and a certain extrusion pressure is formed; (3) Monitoring device is in place and initial values ​​are collected The third jacking device is started to jack up the third top plate, so that the monitoring device rises with the rise of the third top plate. After rising to the specified position, the mechanical lock of the third jacking device is opened, and the values ​​of the cross-sectional deformation, heave deformation and horizontal deformation of the shield tunnel are collected through the monitoring device; (4) Closed grouting system in place Open the ball valve, insert the sliding grouting pipe into the ball valve, and further slowly remove the driven object driven into the shield tunnel segment. As the driven object is removed, the sliding grouting pipe is synchronously inserted into the hole formed by the driven object. When the first airbag and the second airbag completely enter the hole formed by the driven object, the driven object is stopped from being removed. The first airbag and the second airbag are inflated to the preset air pressure value. After the air pressure is formed, the driven object is removed. At the same time, the spatial state between the visual sealing system and the shield tunnel segment is observed in real time through the monitoring camera device, and the pressure value of the first airbag and the second airbag is adjusted. If there is mud and water seepage, the pressure value of the first airbag and the second airbag should be increased in time. (5) Carry out plugging grouting The sliding grouting pipe is slid outward along the airbag ring pipe so that the grouting hole of the sliding grouting pipe is exposed outside the airbag ring pipe, and the first type of grouting construction is started. During the grouting process, the grouting pressure of the closed grouting system, the first airbag pressure, the second airbag pressure and the deformation of the tunnel are monitored in real time through the PLC controller, and the pressure value of the first airbag and the pressure value of the second airbag are always controlled between 3-5 times of the grouting pressure. When the deformation value of the tunnel is greater than the set deformation threshold, the PLC controller directly controls the closed grouting system to stop grouting, and then the operation is carried out after further analysis; (6) Reinforcement grouting After the grouting body is sealed and solidified, the pressure of the first and second airbags is released, and the space state between the visual sealing system and the shield tunnel segment is observed through the monitoring camera device. If there is no muddy water flowing out, the reinforcement grouting is started; (7) Equipment dismantling, grinding of excess grouting, and equipment restoration in the tunnel After the reinforcement grouting body solidifies, the visual sealing system is removed, and the temporary diaphragm is bonded to the reinforcement grouting body to enable the second top plate to be quickly removed. After the visual sealing system is removed, the excess reinforcement grouting body is chiseled out and polished to be flush with the original shield tunnel segment. After the polishing is completed, the equipment in the tunnel of the contact network is restored, and the entire rescue process is completed.

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