Device applied to operation tunnel segment crack grouting

Abstract

A device applied to operation tunnel segment crack grouting comprises a bearing main machine, a rotating system used for driving a grouting system to rotate, the grouting system used for achieving grouting and a detecting and positioning system used for detecting the grouting state, the rotating system is installed on the bearing main machine, the grouting system is installed on the rotating system, and the detecting and positioning system is installed on the bearing main machine. And a detecting and positioning system is arranged on the grouting system. The invention provides a device applied to grouting of duct piece cracks of an operating tunnel. The device can be used for positioning the duct piece cracks and automatically grouting.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction engineering and relates to a device used for grouting cracks in operating tunnel segments. Background Art

[0002] During the operation of the subway, changes in the pressure of the surrounding strata, the frequent operation of subway trains will generate continuous vibration loads, and the natural settlement or uplift of the strata will affect the pipe segments and cause cracks in the segments, and even serious safety accidents.

[0003] Currently, the treatment for pipe segment cracks is mostly to fill them with polymer repair slurry. However, grouting materials are constantly innovating, and the grouting methods for subway tunnel pipe segments are mostly manual grouting, which is inefficient.

[0004] And there are many difficulties in repairing subway tunnels in operation:

[0005] 1. Time Limit

[0006] Short operating time window

[0007] Subways usually have a fixed operating schedule, and generally only have a few hours after they stop operating at night for maintenance work. For example, in some large cities, subway operations last from about 5 a.m. to after 11 p.m., and the time left for tunnel repairs may only be from about 12 a.m. to 4 a.m. This requires that repair work must complete some key processes within an extremely tight time frame, and then evacuate the site before the operating hours arrive to restore the tunnel to normal use.

[0008] Moreover, if there are special circumstances that require extended operating hours, such as holidays, large-scale events, etc., the time window for repair work will be further compressed.

[0009] High construction progress requirements

[0010] Since each construction period is limited, in order to complete the repair task, the progress of each construction stage needs to be accurately planned. For example, if an area that needs to be sealed with mortar cannot be completed within the specified time, it may affect the progress of the entire repair project, thereby prolonging the tunnel's "injured work" state and increasing safety risks.

[0011] 2. Space limitations

[0012] The tunnel has narrow interior space

[0013] The space inside the subway tunnel is relatively small, especially the space on both sides of the track and the top of the tunnel is limited. This makes it difficult for large construction equipment to enter or operate. At the same time, it is also inconvenient for workers to operate in a narrow space. For example, when repairing lining cracks, workers may not have enough space to build a suitable working platform, which increases the difficulty of construction.

[0014] Difficulty in stacking materials and parking equipment

[0015] There is not much space in the tunnel for storing construction materials and equipment. A large amount of materials needed during the construction process, such as steel, cement, sand and gravel, as well as various construction equipment, need to be parked and stacked in a reasonable manner. Otherwise, it may affect the normal operation of the subway's normal operating equipment (such as power supply equipment, communication equipment, etc.), and will also block the safe passage of construction personnel.

[0016] 3. High security risk

[0017] Dangers of train operation

[0018] Even when repair work is done during overnight stoppages, potential risks to train operations must still be considered. For example, when repairing a tunnel near the track, if construction workers do not clean up tools and materials in a timely manner, these items may be caught by the train when operations resume the next day, causing a serious accident. Summary of the invention

[0019] In order to overcome the shortcomings of the prior art, the present invention provides a device for grouting cracks in operating tunnel segments, which can locate cracks in the segments and automatically grout.

[0020] The technical solution adopted by the present invention to solve its technical problem is:

[0021] A device for grouting cracks in operating tunnel segments comprises a main carrier, a rotating system for driving the grouting system to rotate, a grouting system for implementing grouting, and a detection and positioning system for detecting the grouting state. The main carrier is equipped with the rotating system, the rotating system is equipped with the grouting system, and the grouting system is provided with the detection and positioning system.

[0022] Furthermore, the rotating system includes a bearing, a first hydraulic rod and a rotating block, wherein the first hydraulic rod is located on the main bearing unit and is fixedly connected to the main bearing unit; the action end of the first hydraulic rod is connected to the bottom of the rotating block through a bearing, and two first hydraulic rods are symmetrically located on the bottom surface of the rotating block. During operation, the two first hydraulic rods can be raised and lowered respectively to realize the rotation of the rotating block to adjust the grouting angle.

[0023] Furthermore, the grouting system includes a second hydraulic rod, a linear slide rail, a support platform, a drilling rig, a drill bit, a grouting pump, a third hydraulic rod and a support plate. The second hydraulic rod is installed on a rotating block, and the action end of the second hydraulic rod is fixed to the bottom surface of the support plate; the third hydraulic rod is located in the rotating block, and the top action end of the third hydraulic rod is fixed to the bottom surface of the support platform. A grouting pump and a drilling rig are arranged on the support platform, and the output shaft of the drilling rig is connected to the drill bit, and the drill bit passes through the reserved hole of the support plate.

[0024] Preferably, there are linear slide rails on both sides of the inner groove of the rotating block, and the supporting platform can be slidably installed in the linear slide rails up and down.

[0025] More preferably, a grouting pipeline is provided in the drill bit, two slightly larger circular holes are left on the lower side to connect to a grouting pump as grouting ports, and a small hole is left on the upper side of the drill bit.

[0026] Furthermore, the detection and positioning system includes a ground-penetrating radar and an information transmission and cable line. The electromagnetic wave transmitting device of the ground-penetrating radar is located under the support plate; the information transmission cable line integrates the information transmission and power supply of the ground-penetrating radar, the control and power supply of the drilling rig, and the control and power supply circuit of the grouting pump.

[0027] The device also includes a control panel, which collects and displays segment information through information transmission and cables, and can operate a drilling rig and a grouting pump at the same time.

[0028] The device also includes a servo oil source, which provides hydraulic oil to each cylinder through a hydraulic pipeline. The oil pipeline has a common root, which is set in the main body and connects the cylinder and the first hydraulic rod. The root is set on the rotating block and connects the second hydraulic rod and the third hydraulic rod respectively.

[0029] The servo oil source also includes a servo oil source operation panel, which is used to control the pressure of each oil cylinder to control the lifting and lowering of each hydraulic rod.

[0030] The main bearing unit is located on the supporting chassis and is fixedly connected to the supporting chassis, and the supporting chassis is fixedly connected to the small wheels, so that the whole vehicle can move in the tunnel through the small wheels.

[0031] The beneficial effects of the present invention are mainly manifested in:

[0032] (1) This device can automatically locate cracks: This device transmits high-frequency electromagnetic waves into the ground through ground-penetrating radar. The frequency of the electromagnetic waves is usually between 200 and 1000 MHz. The specific frequency selection depends on the detection depth and accuracy requirements. When the electromagnetic waves propagate underground, they will be reflected and refracted when they encounter the interface of different media. The reflected electromagnetic waves are received by the receiving antenna. After processing, the reflected signals received by the receiving antenna can generate a two-dimensional or three-dimensional underground structure image.

[0033] It can not only accurately find potential unexposed cracks, but also observe the density of grouting in real time during grouting. It can not only prevent problems before they happen, but also avoid the empty injection phenomenon caused by artificial grouting being too rough, making grouting more efficient and effective.

[0034] (2) This device can realize multi-angle rotation grouting: In actual situations, it is difficult to deal with cracks in the grouting of the side of the tunnel segment. This device can adjust the hydraulic rods in the rotation system 2 to achieve 180-degree rotation of the upper grouting structure by raising and lowering the two hydraulic rods. At the same time, the support plate is used to support and seal the cracks to prevent the slurry from flowing out after grouting, which is more convenient in actual operation.

[0035] (3) The device also has the advantage of being reusable: because the slurry is difficult to clean, disposable grouting pipes are currently mostly used, which causes waste. The device uses two grouting chambers, one of which is covered with a hydrolyzable gelatin film on the grouting channel before grouting, and the pipe can be cleaned after grouting for reuse.

[0036] (4) The device is also easy to operate and quick to construct. It can be quickly completed during downtime without interrupting the next day's use.

[0037] (5) The device is highly integrated, avoiding the random placement of materials and equipment, reducing construction space, and preventing the omission of parts and components, which may lead to safety hazards in the next day's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a cross-sectional view of a device used for grouting cracks in operating tunnel segments.

[0039] Figure 2 It is a left view of the device used for grouting cracks in operating tunnel segments.

[0040] Figure 3 It is a top view of the device used for grouting cracks in operating tunnel segments.

[0041] Figure 4 It is a front view of the device used for grouting cracks in operating tunnel segments.

[0042] Figure 5 It is a cross-sectional schematic diagram of the drill bit.

[0043] Figure 6 It is a stereoscopic diagram of a device used for grouting cracks in operating tunnel segments.

[0044] Figure 7 It is a connection diagram of the rotating system.

[0045] Figure 8 This is a cross-sectional view of the grouting port.

[0046] Fig. 9 This is a schematic diagram of the grouting port.

[0047] The figures are marked as follows: 1 is the main bearing unit, 101 is the supporting chassis, 102 is the moving wheel, 201 is the rotating block, 202 is the first hydraulic rod, 301 is the second hydraulic rod, 302 is the linear slide rail, 303 is the supporting platform, 304 is the drilling rig, 305 is the drill bit, 306 is the grouting pump, 307 is the third hydraulic rod, 308 is the supporting plate, 309 is the reserved hole, 310 is the slurry delivery pipeline, 311 is the grouting port, 401 is the bottom detection radar, 501 is the control panel, 6 is the servo oil source, 601 is the servo oil source control panel, and 8 is the oil cylinder. DETAILED DESCRIPTION

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] Reference Figure 1 A device for grouting cracks in operating tunnel segments includes a main carrier 1, a rotating system for driving the grouting system to rotate, a grouting system for implementing grouting, and a detection and positioning system for detecting the grouting state. The rotating system is installed on the main carrier, the grouting system is installed on the rotating system, and the detection and positioning system is arranged on the grouting system.

[0050] In this embodiment, the main machine 1 is located on the supporting chassis 101, fixedly connected to the supporting chassis 101, connected to the lower part of the rotating block 201 through a bearing, and contains an oil cylinder 8 under the hydraulic rod 202; the supporting chassis 101 is located under the main machine 1 and fixedly connected to the small wheel 102, and the equipment can be moved as a whole in the tunnel through the small wheel 102.

[0051] The rotating system includes a bearing 203, a first hydraulic rod 202 and a rotating block 201. The first hydraulic rod 202 is located above the main machine 1 and is fixedly connected to the main machine 1; it is located below the rotating block 202 and is respectively connected to the rotating block 202 through the bearing 203. During operation, the rotating block 201 can be rotated to adjust the grouting angle by respectively lifting and lowering the two first hydraulic rods 202.

[0052] The grouting system includes a second hydraulic rod 301, a linear slide rail 302, a support platform 303, a drilling rig 304, a drill bit 305, a grouting pump 306, a third hydraulic rod 307 and a support plate 308. The third hydraulic rod 307 is located in the rotating block 201, below the support platform 303, and is rigidly connected to the two. When drilling, the third hydraulic rod 307 can lift the support platform 303 to achieve the lifting of the grouting pump 306 and the drill bit 305; the support platform 303 is located above the action end of the third hydraulic rod 307 and is rigidly connected to it, below the grouting pump 306, and has linear slide rails 302 on both sides. The linear slide rails 302 play a limiting role when the support platform 303 is lifted or lowered to prevent the support platform 303 from overturning;

[0053] The drilling rig 304 is just connected to the support platform 303. When working, the drilling rig 304 rotates to drive the drill bit 305 to rotate and drill holes in the tunnel segments. There is a grouting pipeline 310 in the drill bit 305, and two slightly larger circular holes are left on the lower side to connect the grouting pump 306 as grouting ports 311, and a small hole is left on the upper side. The grouting pump 306 is fixed on the support platform 303, and the grouting port 311 is just in contact with the grouting outlet of the grouting pump. After drilling is completed, the grouting pump 306 can grout the cracks through the grouting pipeline 310 in the drill bit 305, and at the same time, the hydraulic rod 301 retracts to drive the drill bit 305 to retract to achieve gradual grouting.

[0054] The second hydraulic rod 301 is located on the rotating block 201 and below the supporting plate 308 , and is rigidly connected to the two. Its function is to lift and support the supporting plate 308 , on which the ground penetrating radar 401 is mounted.

[0055] The support plate 308 has a reserved hole 309 for the drill bit 30 to pass through.

[0056] The detection and positioning system includes a ground penetrating radar 401 and information transmission and cables. The electromagnetic wave transmitting device of the ground penetrating radar 401 is located under the supporting plate 308 .

[0057] The control panel 501 collects and displays segment information through information transmission and cables, and can also operate the drilling rig 304 and the grouting pump 306 .

[0058] The servo oil source 6 provides hydraulic oil to each cylinder through hydraulic pipelines. There are 4 oil pipelines in total, 2 of which are set in the main machine 1 to connect the cylinder 8 and the first hydraulic rod 202, and 2 are set in the rotating block 201 to connect the second hydraulic rod 301 and the third hydraulic rod 307 respectively.

[0059] The servo oil source operation panel 601 can control the pressure of each oil cylinder 8 to control the lifting and lowering of each hydraulic rod.

[0060] The information transmission cable integrates the information transmission and power supply of the ground penetrating radar 401, the control and power supply of the drilling rig, and the control and power supply circuit of the grouting pump.

[0061] The specific embodiments of the present invention are:

[0062] (1) Start the servo oil source 6 and adjust the height of the support plate 308 through the second hydraulic rod 307 so that the ground penetrating radar reaches an effective working distance.

[0063] (2) Start the control panel 501, start the ground penetrating radar 401 through the control panel, and move the device while observing the radar return information on the control panel 501 to determine the location of the crack.

[0064] (3) After the crack position is determined, the servo oil source 6 can be controlled to raise and lower the first hydraulic rod 202 to adjust the angle of the drill bit 305, and the drilling position can be determined by moving the device through the small wheel 102.

[0065] (4) Before drilling, the grouting pump 306 is used to pump the easily hydrolyzed gelatin film so that the reserved channel in the drill bit is attached with the film for cleaning after grouting. After cleaning, the pre-grouting liquid is stored in the grouting pump 306.

[0066] (5) After the drilling position is determined, the support plate 308 is lifted through the servo oil source operation panel 601 so that the support plate 308 just touches the tunnel segment to prevent slurry leakage, and the outlet of the drill bit slurry delivery pipeline is aligned with the crack drilling.

[0067] (6) Start the drilling rig 304 through the control panel 501, then raise the third hydraulic rod 307 through the servo oil source control panel 501, that is, raise the support platform 303 to raise the drill bit 305, drill the crack, observe the information sent back by the ground penetrating radar 401 to determine the drilling depth, control the servo oil source 601 to stop raising the drill bit 305 when the drilling depth is deep enough, and then shut down the drilling rig through the control panel 501.

[0068] (7) The grouting pump 306 is started through the control panel 501, and the slurry enters the crack through the reserved channel in the drill bit, and then slowly retracts through the servo oil source control panel 601. At the same time, the information sent back by the ground penetrating radar 401 is observed to determine the filling degree of the slurry.

[0069] (8) When the drill bit 305 retracts to the support plate 308, the servo oil source 6 is turned off, the ground penetrating radar 401 is turned off, the control system 501 is turned off, and the slurry is waited for solidification.

[0070] (9) After solidification, start the servo oil source 6 to return the support plate 308 and the drill bit 305 to their original positions. Adjust the first hydraulic rod 202 to return the device to the original position. End the grouting and withdraw the equipment. The process ends.

[0071] The contents described in the embodiments of this specification are merely enumerations of implementation forms of the inventive concept and are for illustrative purposes only. The protection scope of the present invention should not be considered to be limited to the specific forms described in this embodiment, and the protection scope of the present invention also extends to equivalent technical means that can be thought of by ordinary technicians in this field based on the inventive concept.

Claims

1. A device for grouting cracks in operating tunnel segments, characterized in that: It includes a main bearing host, a rotating system for driving the grouting system to rotate, a grouting system for realizing grouting, and a detection and positioning system for detecting the grouting state. The rotating system is installed on the main bearing host, the grouting system is installed on the rotating system, and the detection and positioning system is arranged on the grouting system.

2. The device for grouting cracks in operating tunnel segments according to claim 1, characterized in that: The rotating system includes a bearing, a first hydraulic rod and a rotating block. The first hydraulic rod is located on the main bearing unit and is fixedly connected to the main bearing unit. The action end of the first hydraulic rod is connected to the bottom of the rotating block through a bearing. Two first hydraulic rods are symmetrically located on the bottom surface of the rotating block. During operation, the two first hydraulic rods can be raised and lowered respectively to realize the rotation of the rotating block to adjust the grouting angle.

3. The device for grouting cracks in operating tunnel segments according to claim 2, characterized in that: The grouting system includes a second hydraulic rod, a linear slide rail, a support platform, a drilling rig, a drill bit, a grouting pump, a third hydraulic rod and a support plate. The second hydraulic rod is installed on a rotating block, and the action end of the second hydraulic rod is fixed to the bottom surface of the support plate; the third hydraulic rod is located in the rotating block, and the top action end of the third hydraulic rod is fixed to the bottom surface of the support platform. A grouting pump and a drilling rig are arranged on the support platform, and the output shaft of the drilling rig is connected to the drill bit, and the drill bit passes through the reserved hole of the support plate.

4. The device for grouting cracks in operating tunnel segments according to claim 3, characterized in that: Linear slide rails are arranged on both sides of the inner groove of the rotating block, and the supporting platform can be slidably installed in the linear slide rails up and down.

5. The device for grouting cracks in operating tunnel segments according to claim 3, characterized in that: The drill bit is provided with a grouting pipeline, and two slightly larger circular holes are left on the lower side to connect to a grouting pump as grouting ports, and a small hole is left on the upper side of the drill bit.

6. The device for grouting cracks in operating tunnel segments according to any one of claims 3 to 5, characterized in that: The detection and positioning system includes a ground penetrating radar and an information transmission and cable line. The electromagnetic wave transmitting device of the ground penetrating radar is located under the supporting plate; the information transmission cable line integrates the information transmission and power supply of the ground penetrating radar, the control and power supply of the drilling rig, and the control and power supply circuit of the grouting pump.

7. The device for grouting cracks in operating tunnel segments according to claim 6, characterized in that: The device also includes a control panel, which collects and displays segment information through information transmission and cables, and can operate a drilling rig and a grouting pump at the same time.

8. The device for grouting cracks in operating tunnel segments according to any one of claims 3 to 5, characterized in that: The device also includes a servo oil source, which provides hydraulic oil to each cylinder through a hydraulic pipeline. The oil pipeline has a common root, which is set in the main body and connects the cylinder and the first hydraulic rod. The root is set on the rotating block and connects the second hydraulic rod and the third hydraulic rod respectively.

9. The device for grouting cracks in operating tunnel segments according to claim 8, characterized in that: The servo oil source also includes a servo oil source operation panel, which is used to control the pressure of each oil cylinder to control the lifting and lowering of each hydraulic rod.

10. The device for grouting cracks in operating tunnel segments according to any one of claims 3 to 5, characterized in that: The main bearing unit is located on the supporting chassis and is fixedly connected to the supporting chassis, and the supporting chassis is fixedly connected to the small wheel.

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