Movable subway tunnel crack repairing device

Abstract

A movable subway tunnel crack repairing device comprises a moving system, a sound wave crack searching system, a posture adjusting system, a grouting repairing system and a monitoring system, the sound wave crack searching system and the posture adjusting system are located on the moving system, the grouting repairing system is located on the posture adjusting system, and the monitoring system is located on the grouting repairing system. The crack repairing device can effectively overcome the defects of a conventional repairing device, not only can be used for repairing various cracks, but also is simple and easy to implement, convenient to operate, low in cost and short in construction time.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel engineering and relates to a movable subway tunnel crack repairing device which is suitable for repairing subway tunnel cracks. Background Art

[0002] In recent years, my country's urban underground engineering has achieved rapid development and has become increasingly mature in design and construction. However, with the increase in the number of subways and the increase in the length of time they are used, subway tunnels may be affected by some adverse geology or some unexpected construction accidents, resulting in problems with tunnel segments. Among the many diseases of subway tunnels, lining cracking is a common form of disease in the construction and use of subway tunnels today, and deep cracks are a more common form of cracking. Deep lining cracking reduces the strength of concrete, reduces the bearing capacity of the tunnel lining, and also causes corrosion of rails and fasteners, shortens the service life, and endangers driving safety. Therefore, the repair devices and methods commonly used in existing projects are: 1) Direct grouting repair behind the lining through the original grouting holes; 2) Repair with modified epoxy resin. However, there are many shortcomings in the existing repair methods. For example, although it is more convenient and quick to use the original grouting holes to directly grout the back of the lining and to use modified epoxy resin to repair, it is not suitable for all locations and all types of crack repairs, and has great limitations. Moreover, due to the poor cracking and impact resistance of modified epoxy resin, it is easier to cause secondary cracking. Therefore, in order to overcome the shortcomings of the existing subway tunnel crack repair device and method, the utility model discloses a movable subway tunnel crack repair device and an operating method thereof. Summary of the invention

[0003] In order to overcome the shortcomings of the existing subway tunnel crack repair devices and methods, such as poor effect, complicated operation, high cost and long construction time, the utility model provides a movable subway tunnel crack repair device, which can effectively overcome the shortcomings of the above conventional repair device methods. The device can not only repair a variety of cracks, but also is simple, easy to operate, low cost and short construction time.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A movable subway tunnel crack repair device comprises a moving system, an acoustic wave crack finding system, a posture adjustment system, a grouting repair system and a monitoring system, wherein the acoustic wave crack finding system and the posture adjustment system are located on the moving system, the grouting repair system is located on the posture adjustment system, and the monitoring system is located on the grouting repair system.

[0006] Furthermore, the mobile system includes a wheelset, a vertical hydraulic jack and a transverse steel frame, the vertical hydraulic jack is fixed to the wheelset by bolts, and the transverse steel frame is fixed to the vertical hydraulic jack by bolts.

[0007] Furthermore, the sonic seam finding system includes a telescopic rod of the sonic seam finding device, a rubber pad and a sonic seam finding device, wherein the sonic seam finding device is fixed to the telescopic rod of the sonic seam finding device by bolts, and the rubber pad is located between the telescopic rod and the sonic seam finding device.

[0008] Furthermore, the posture adjustment system includes a telescopic rod of the drilling and grouting part, a driven wheel, a driving motor, a driving wheel, a transverse hydraulic jack and a vertical steel frame, the driving wheel is welded to the output shaft of the driving motor, the vertical steel frame is bolted to the transverse hydraulic jack, and the driving motor, the driven wheel and the transverse hydraulic jack are all bolted to the telescopic rod of the drilling and grouting part.

[0009] Furthermore, the grouting repair system includes a slurry storage box, a slurry addition port, a slurry output port, a retractable hose, a rotary motor and a drilling and grouting integrated pipe. The slurry addition port is located on the slurry storage box, and the slurry storage box is fixed to the telescopic rod of the drilling and grouting part. One end of the retractable hose is connected to the slurry output port, and the other end is connected to the drilling and grouting integrated pipe. The drilling and grouting integrated pipe is located on the rotary motor.

[0010] Furthermore, the monitoring system includes an acoustic wave generator, an acoustic wave receiver and a laser rangefinder, and the acoustic wave generator, the acoustic wave receiver and the laser rangefinder are all fixed on the rotating motor.

[0011] The utility model provides a movable subway tunnel crack repair device, which can accurately repair subway tunnel cracks. The repair device has the following beneficial effects: (1) Fast and accurate crack detection. The device is equipped with a sonic wave crack detection device that can move freely along the track direction, which can first detect cracks in the tunnel to be repaired, and the sonic wave crack detection device can move freely up and down, so that a certain area of ​​the tunnel can be quickly and finely detected. (2) Automatic control, easy operation, and short repair time. By controlling the telescopic rod, the drive motor and the transverse hydraulic jack, the device adopts a multi-stage telescopic control, which can autonomously and accurately move the drilling grouting repair end to the tunnel lining to be repaired. (3) Reduce the amount of overflow and reduce costs. The device uses a sonic wave generator and a sonic wave receiver to achieve real-time monitoring during the drilling and grouting process, control the grouting amount on the premise of ensuring the repair of cracks, reduce overflow, and effectively reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of a movable subway tunnel crack repair device.

[0013] Figure 2 This is a schematic diagram of the drilling and grouting part.

[0014] Figure 3 It is a schematic diagram of the telescopic rod and rubber anti-skid pad of the sonic wave crack-finding device.

[0015] Figure 4 It is a schematic diagram of the moving part. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Reference Figure 1 to Figure 4 A movable subway tunnel crack repair device includes a mobile system, an acoustic wave crack finding system, a posture adjustment system, a grouting repair system, and a monitoring system. The acoustic wave crack finding system and the posture adjustment system are located on the mobile system, the grouting repair system is located on the posture adjustment system, and the monitoring system is located on the grouting repair system.

[0018] Furthermore, the mobile system includes a wheelset 1, a vertical hydraulic jack 2 and a transverse steel frame 3, wherein the vertical hydraulic jack 3 is fixed to the wheelset 1 by bolts, and the transverse steel frame 3 is fixed to the vertical hydraulic jack 3 by bolts.

[0019] Furthermore, the sonic wave seam finding system includes a sonic wave seam finding device telescopic rod 4, a rubber pad 5 and a sonic wave seam finding device 6, wherein the sonic wave seam finding device 6 is fixed to the sonic wave seam finding device telescopic rod 4 by bolts, and the rubber pad 5 is located between the sonic wave seam finding device telescopic rod 4 and the sonic wave seam finding device 5.

[0020] Furthermore, the posture adjustment system includes a telescopic rod 7 of the drilling and grouting part, a driven wheel 8, a driving motor 9, a driving wheel 10, a transverse hydraulic jack 11 and a vertical steel frame 12. The driving wheel 10 is welded to the output shaft of the driving motor 9, the vertical steel frame 12 is bolted to the transverse hydraulic jack 11, and the driving motor 9, the driven wheel 8 and the transverse hydraulic jack 11 are all bolted to the telescopic rod 7 of the drilling and grouting part.

[0021] Furthermore, the grouting repair system includes a slurry storage box 13, a slurry addition port 14, a slurry output port 15, a retractable hose 16, a rotary motor 17 and a drilling and grouting integrated pipe 18. The slurry addition port 14 is located on the slurry storage box 15, and the slurry storage box 15 is fixed to the telescopic rod 7 of the drilling and grouting part. One end of the retractable hose 16 is connected to the slurry output port 15, and the other end is connected to the drilling and grouting integrated pipe 18. The drilling and grouting integrated pipe 18 is located on the rotary motor 17.

[0022] Furthermore, the monitoring system includes a sound wave generator 19 , a sound wave receiver 20 and a laser rangefinder 21 , and the sound wave generator 19 , the sound wave receiver 20 and the laser rangefinder 21 are all fixed on the rotating motor 17 .

[0023] A movable subway tunnel crack repair method comprises the following steps:

[0024] Step 1. Assemble the main body of the device: assemble the wheelset 1, vertical hydraulic jack 2, and horizontal steel frame 3 to form the mobile system of the device, then assemble the sonic seam finding system and posture adjustment system to the mobile part, then assemble the grouting repair system to the posture adjustment system, and finally assemble the monitoring system to the grouting repair system.

[0025] Step 2: Install the movable repair device on the subway track.

[0026] Step 3: Determine the diameter of the drilling and grouting integrated pipe and install it according to the tunnel diameter, segment thickness and tunnel crack damage of the section to be repaired.

[0027] Step 4: Add grouting liquid. According to the crack damage and water leakage of the tunnel in this section, use appropriate grouting liquid and inject it into the grouting liquid storage box.

[0028] Step 5: Start the device to find and repair the seams.

[0029] Step 6: After repairing all cracks in this section, turn off the device and dismantle it in the order of installation to complete the repair.

[0030] The tunnel project of a certain city subway section was constructed by shield method. The tunnel top is buried at a depth of 10 to 12 meters, the shield segments are spliced ​​in staggered joints, the inner diameter of the tunnel is 5.5 meters, the outer diameter is 6.2 meters, and the segment ring width is 1.2 meters.

[0031] Due to the influence of surrounding projects near the subway construction, cracks and water seepage have appeared in the segments of the subway tunnel section in operation, which has threatened the safe operation of the subway. Therefore, the movable subway tunnel crack repair device and its operation method provided by the utility model are adopted.

[0032] The implementation scheme of the utility model is:

[0033] (1) Assemble the main body of the device: Assemble the wheelset 1, the vertical hydraulic jack 2, and the horizontal steel frame 3 to form the mobile system of the device, then assemble the sonic wave seam finding system and the posture adjustment system to the mobile part, then assemble the grouting repair system to the posture adjustment system, and finally assemble the monitoring system to the grouting repair system.

[0034] (2) Install a movable repair device on the subway track.

[0035] (3) Install the drilling and grouting integrated pipe 18. According to the tunnel diameter, segment thickness and tunnel crack damage in this section, the diameter of the drilling and grouting integrated pipe 18 is determined to be 30 mm. The 30 mm drilling and grouting integrated pipe 18 is inserted and locked into the rotary motor 17.

[0036] (4) Adding grouting liquid. According to the crack damage and water leakage of the tunnel in this section, the grouting liquid is determined to be cement mortar. The cement mortar is injected into the slurry storage box 13 through the slurry adding port 14.

[0037] (5) Adjusting the height of the sonic wave crack finding device 6. The height of the sonic wave crack finding device 6 and the drilling and grouting part is roughly adjusted by the vertical hydraulic jack 2, and the height of the sonic wave crack finding device 6 is finely adjusted by the telescopic rod 4 of the sonic wave crack finding device.

[0038] (6) Start the device to find and repair the crack. When the sonic wave crack finding device 6 detects a crack, the drilling and grouting part is controlled to stop at the same cross-sectional position of the crack.

[0039] (7) Adjust the drilling and grouting part to the crack. The driving motor 9 is controlled to rotate the driving wheel 10 to finely rotate the driven wheel 8, so that the drilling and grouting part is accurately rotated to the crack. According to the feedback information of the sound wave generator 19, the sound wave receiver 20, and the laser rangefinder 21, the telescopic rod 7 and the horizontal hydraulic jack 11 of the drilling and grouting part are controlled to fine-tune the drilling and grouting part.

[0040] (8) Drilling. Control the horizontal hydraulic jack 11 and the rotary motor 17 to drill the drilling and grouting integrated pipe 18 into the cracked part of the tunnel. According to the feedback information from the sound wave generator 19, the sound wave receiver 20, and the laser rangefinder 21, the drilling and grouting integrated pipe 18 is drilled to the appropriate depth of the tunnel lining.

[0041] (9) Grouting. The grouting pressure is controlled by the slurry outlet 15, and pressure grouting is performed on the cracks. According to the detection of the grouting status by the sonic generator 19 and the sonic receiver 20, when the grouting of the deep cracks is completed, the drilling and grouting integrated pipe 18 is lifted up and grouting is performed again. The above process is repeated until the cracks are completely repaired.

[0042] (10) If there are other cracks on the cross section, repeat steps (6) to (8) until all cracks on the cross section are repaired.

[0043] (11) Continue to travel along the track. When the sonic wave crack finding device 6 detects a crack again, the drilling and grouting part is controlled to stop at the same cross-sectional position of the crack, and steps (6) to (9) are repeated.

[0044] (12) After repairing all the cracks in this section, shut down the device and dismantle it in the order in which it was installed.

[0045] Complete this patch.

[0046] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the utility model concept and are for illustrative purposes only. The protection scope of the utility model should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the utility model also extends to equivalent technical means that ordinary technicians in this field can think of based on the concept of the utility model.

Claims

1. A movable subway tunnel crack repair device, characterized in that: The device comprises a mobile system, an acoustic wave seam finding system, a posture adjustment system, a grouting repair system and a monitoring system. The acoustic wave seam finding system and the posture adjustment system are located on the mobile system, the grouting repair system is located on the posture adjustment system, and the monitoring system is located on the grouting repair system.

2. The movable subway tunnel crack repair device according to claim 1, characterized in that: The mobile system comprises a wheel set, a vertical hydraulic jack and a transverse steel frame. The vertical hydraulic jack is fixed to the wheel set by bolts, and the transverse steel frame is fixed to the vertical hydraulic jack by bolts.

3. The movable subway tunnel crack repairing device according to claim 1 or 2, characterized in that: The sonic seam finding system comprises a sonic seam finding device telescopic rod, a rubber pad and a sonic seam finding device. The sonic seam finding device is fixed to the sonic seam finding device telescopic rod by bolts, and the rubber pad is located between the sonic seam finding device telescopic rod and the sonic seam finding device.

4. The movable subway tunnel crack repair device according to claim 1 or 2, characterized in that: The posture adjustment system includes a telescopic rod of the drilling and grouting part, a driven wheel, a driving motor, a driving wheel, a transverse hydraulic jack and a vertical steel frame. The driving wheel is welded to the output shaft of the driving motor, the vertical steel frame is bolted to the transverse hydraulic jack, and the driving motor, the driven wheel and the transverse hydraulic jack are all bolted to the telescopic rod of the drilling and grouting part.

5. The movable subway tunnel crack repairing device according to claim 1 or 2, characterized in that: The grouting repair system includes a slurry storage box, a slurry addition port, a slurry output port, a retractable hose, a rotary motor and a drilling and grouting integrated pipe. The slurry addition port is located on the slurry storage box, and the slurry storage box is fixed to the telescopic rod of the drilling and grouting part. One end of the retractable hose is connected to the slurry output port, and the other end is connected to the drilling and grouting integrated pipe. The drilling and grouting integrated pipe is located on the rotary motor.

6. The movable subway tunnel crack repair device according to claim 1 or 2, characterized in that: The monitoring system comprises an acoustic wave generator, an acoustic wave receiver and a laser rangefinder, and the acoustic wave generator, the acoustic wave receiver and the laser rangefinder are all fixed on a rotating motor.

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