Tunneling machine synchronous duct piece backwall grouting system, tunneling machine and grouting method

Abstract

The invention discloses a synchronous duct piece post-wall grouting system of a heading machine, the heading machine and a grouting method. The synchronous duct piece post-wall grouting system of the heading machine comprises a rack (1); the first track (2) is mounted on the rack (1) and extends along the length direction of the heading machine; the moving part (3) is movably mounted on the first rail (2); and the grouting device (4) is mounted below the moving component (3) and is configured to rotate in a plane perpendicular to the first track (2) relative to the moving component (3) so as to perform grouting reinforcement on multiple directions of the bottom of the tunnel.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel boring machines, and in particular to a tunnel boring machine synchronous segment wall back grouting system, a tunnel boring machine and a grouting method. Background Art

[0002] During the construction of soft soil tunnels, it was found that the sinking of the segment line after the tunnel was formed was a major construction problem, especially for high-speed rail projects with high requirements for the running route. The traditional secondary grouting system can only reinforce the local cavity behind the segment wall, which fails to effectively solve this construction problem. Summary of the invention

[0003] The present invention aims to provide a tunnel boring machine synchronous segment wall back grouting system, a tunnel boring machine and a grouting method, so as to improve the problem of segment upper route sinking after tunnel forming existing in the prior art.

[0004] According to one aspect of an embodiment of the present invention, the present invention provides a synchronous segment wall back grouting system for a tunnel boring machine, the grouting system comprising:

[0005] frame;

[0006] A first rail, mounted on the frame and extending along the length of the tunnel boring machine;

[0007] a moving member movably mounted on the first track; and

[0008] The grouting device is installed below the moving component and is configured to rotate relative to the moving component in a plane perpendicular to the first track so as to perform grouting reinforcement on multiple positions of the bottom of the tunnel.

[0009] In some embodiments, the grouting device comprises:

[0010] a bearing member mounted on the moving member and configured to rotate relative to the moving member in a plane perpendicular to the first track;

[0011] The drilling machine is installed on the bearing component and is configured to move radially relative to the bearing component along the axis of rotation of the grouting device relative to the moving component. The drilling machine includes a drill bit, and the drill bit is provided with grouting holes.

[0012] In some embodiments, the grouting device further comprises a telescopic component, which is mounted on the bearing component and is configured to move radially relative to the bearing component, and the drilling rig is mounted on the telescopic component.

[0013] In some embodiments, the drill is configured to move radially relative to the telescoping member.

[0014] In some embodiments, the moving component includes an arc-shaped second track, and the grouting device is configured to move along the second track so that the grouting device rotates in a plane perpendicular to the first track.

[0015] In some embodiments, the grouting system further comprises a box culvert assembling device for assembling the box culvert, wherein the box culvert assembling device is installed on the frame and is configured to move along the length direction of the tunnel boring machine.

[0016] In some embodiments, the grouting system further includes a first driving component that drives the moving component to move along the length direction of the tunnel boring machine and a controller that is signal-connected to the first driving component and the box culvert assembly device, respectively, and the controller is configured to:

[0017] After the box culvert assembly device completes the assembly of the box culvert, the grouting device is controlled to move to the front of the assembled box culvert to perform grouting reinforcement on the bottom of the tunnel;

[0018] After the grouting device completes the grouting reinforcement on the bottom of the tunnel, the grouting device is controlled to move forward, and then the box culvert assembling device is controlled to assemble the box culvert on the bottom of the tunnel after the grouting reinforcement is completed.

[0019] According to another aspect of the present application, a tunnel boring machine is also provided, and the tunnel boring machine includes the above-mentioned grouting system.

[0020] According to another aspect of the present application, a grouting method of the above-mentioned grouting system is also provided, and the grouting method comprises:

[0021] Control the grouting device to move along the length direction of the tunnel boring machine to the front of the assembled box culvert;

[0022] Control the grouting device to perform grouting reinforcement on the bottom of the tunnel;

[0023] After the grouting device completes the grouting reinforcement on the bottom of the tunnel, the box culvert assembling device is controlled to assemble the box culvert on the bottom of the tunnel after the grouting reinforcement.

[0024] In some embodiments, after the grouting device completes grouting reinforcement on the bottom of the tunnel, the control device moves forward to control the box culvert assembling device to assemble the box culvert on the bottom of the tunnel after grouting reinforcement.

[0025] By applying the technical solution of the present application, the grouting system can perform grouting reinforcement on the bottom of the tunnel, which can effectively improve the firmness of the bottom of the tunnel and is conducive to improving the problem of route settlement on the pipe segment after tunnel formation that exists in the related art.

[0026] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 A schematic structural diagram of a tunnel boring machine according to an embodiment of the present invention is shown;

[0029] Figure 2 A schematic structural diagram showing a cross section of a tunnel boring machine according to an embodiment of the present invention;

[0030] Figure 3 A schematic structural diagram of a grouting device for a roadheader according to an embodiment of the present invention is shown;

[0031] Figure 4 A schematic structural diagram of a tunnel boring machine in a grouting process according to an embodiment of the present invention is shown;

[0032] Figure 5 A schematic structural diagram showing a cross section of a roadheader in a grouting process according to an embodiment of the present invention;

[0033] Figure 6 A schematic structural diagram of a tunnel boring machine in a box culvert assembly process according to an embodiment of the present invention is shown;

[0034] Figure 7 A schematic structural diagram showing a cross section of a roadheader in a box culvert assembly process according to an embodiment of the present invention; and

[0035] Figure 8 A schematic structural diagram showing a cross section of a tunnel constructed by a tunnel boring machine according to an embodiment of the present invention.

[0036] In the figure:

[0037] 1. Frame; 2. First track; 3. Moving parts; 4. Grouting device; 41. Bearing parts; 42. Telescopic parts; 43. Drilling rig; 431. Drill bit; 432. Drill rod; 433. Drilling rig power unit; 5. Box culvert; 6. Pipe segment; 7. Box culvert assembly device; 8. Reinforcement device. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0042] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0043] If there is no special explanation, the "include" and "comprising" mentioned in this application are open-ended or closed-ended. For example, the "include" and "comprising" may mean that other components not listed may also be included or only the listed components may be included or only the listed components may be included.

[0044] If not specifically stated, in this application, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0045] Combination Figures 1 to 2 As shown, in order to improve the problem of route settlement on the segment 6 after tunnel formation in the related art, this embodiment provides a synchronous segment wall rear grouting system for a tunnel boring machine, the grouting system is used for grouting behind the tunnel arm (i.e., inside), and the grouting system includes a frame 1, a first track 2, a moving part 3 and a grouting device 4. The first track 2 is mounted on the frame 1 and extends along the length direction of the tunnel boring machine; the moving part 3 is movably mounted on the first track 2; the grouting device 4 is mounted below the moving part 3 and is configured to rotate relative to the moving part 3 in a plane perpendicular to the first track 2, so as to perform grouting reinforcement on multiple positions of the bottom of the tunnel.

[0046] The synchronous segment wall rear grouting system of the tunnel boring machine of this embodiment can perform grouting reinforcement on the bottom of the tunnel, which can effectively improve the firmness of the bottom of the tunnel and is conducive to improving the problem of route settlement on the segment 6 after tunnel formation in the related art.

[0047] See also Figure 3 The grouting device 4 of this embodiment includes a bearing component 41 installed on the moving component 3 and a drilling rig 43 installed on the bearing component 41. The drilling rig 43 is configured to be able to move radially relative to the bearing component 41 along the axis of rotation of the grouting device 4 relative to the moving component 3. The drilling rig 43 includes a drill bit 431, and a grouting hole is arranged on the drill bit 431.

[0048] The bearing member 41 can rotate relative to the moving member 3 in a plane perpendicular to the first track 2, thereby driving the drilling machine 43 to sequentially grout at multiple points around the tunnel, see Figure 5 In this embodiment, the grouting device 4 is installed below the moving part 3, and the drill bit 431 of the drilling machine 43 faces downward to grout the bottom of the tunnel, thereby improving the firmness of the bottom of the tunnel, which is conducive to improving the problem of route settlement on the pipe segment 6 after tunnel formation in the related art.

[0049] The drill 43 is configured to be movable relative to the bearing member 41 along the radial direction (approximately the up-and-down direction) of the axis of rotation of the grouting device 4 relative to the moving member 3 to provide a feed stroke for the drilling depth.

[0050] Drilling rig 43 is a collection of functions of the grouting system, such as drilling, grouting, pressure monitoring, sewage recovery, and maintaining pressure balance. Drill bit 431 is a multi-mode drill bit. Drill bit 431 includes a porous tube, a pressure monitoring system, automatic grouting, pressure balance and sewage recovery system. Drill bit 431 can realize automatic detection of grouting hole pressure and maintain pressure balance. Among them, the porous tube integrates multiple functions such as detecting the pressure in the hole and transmitting it to the control center, ensuring that the pressure in the hole is a constant value, actively sucking away excess mud, and actively injecting cement slurry. Drill bit 431 is not limited to functions such as grouting, pressure monitoring, and sewage recovery, and other functions can be realized according to improvements.

[0051] According to different geological conditions, various parameters of the drill bit 431 can be set to meet various geological reinforcement depths. The pile type can be determined according to the type of drill bit. For example, if the pile type is vertical pile, ordinary grouting can be selected; if the jet pile is jet grouting, the jet grouting method can be selected.

[0052] In some embodiments, the grouting device 4 further includes a telescopic component 42, which is mounted on the bearing component 41 and configured to move radially relative to the bearing component 41, and the drilling machine 43 is mounted on the telescopic component 42. The telescopic component 43 extends or retracts radially relative to the bearing component 41 along the axis of rotation of the grouting device 4 relative to the moving component 3 to drive the drilling machine 43 to move in the above-mentioned radial direction to provide a feed stroke for the drilling depth.

[0053] In some embodiments, the grouting device 4 further includes a first distance sensor, which is used to detect the distance moved by the telescopic component 42 relative to the bearing component 41 , so as to control the telescopic component 42 to move a set distance relative to the bearing component 41 .

[0054] The drilling rig 43 further includes a drill rod 432 connected to the drill bit 431 and a drilling rig power device 433 connected to the drill rod 432. The drill rod 432 is a telescopic mechanism with power, and the drilling rig 43 is optionally configured to move radially relative to the telescopic component 42 to achieve the extension or retraction of the drill rod 432 relative to the telescopic component 42 in the above-mentioned radial direction. The telescopic direction of the drill rod 432 is consistent with the moving direction of the telescopic component 42 relative to the bearing component 41. The drilling rig 43 further includes a second distance sensor for detecting the moving distance of the drill rod 432, so as to control the drill rod 432 to move a set distance, thereby achieving a predetermined drilling depth.

[0055] In some embodiments, the moving component 3 includes an arc-shaped second track, and the grouting device 4 is configured to move along the second track so that the grouting device 4 rotates in a plane perpendicular to the first track 2. The grouting device 4 moves along the arc-shaped second track, thereby realizing the rotation of the grouting device 4 in a plane perpendicular to the first track 2.

[0056] In some embodiments, the grouting system further comprises a box culvert assembly device 7 for assembling the box culvert 5, the box culvert assembly device 7 being mounted on the frame 1 and being configured to move along the length direction of the tunnel boring machine. In some embodiments, the box culvert assembly device 7 comprises a box culvert crane, which is used for assembling the box culvert.

[0057] The pipe segment 6 used for tunnel forming and tunnel support is provided with grouting holes that provide points for grouting, and the multiple grouting holes are arranged along the circumference of the pipe segment 6.

[0058] In some embodiments, the grouting system further includes a first driving component that drives the moving component 3 to move along the length direction of the tunnel boring machine and a controller that is signal-connected to the first driving component and the box culvert assembly device 7, respectively. The controller is configured as follows:

[0059] After the box culvert assembly device 7 completes the assembly of the box culvert 5, the grouting device 4 is controlled to move to the front of the assembled box culvert 5 to perform grouting reinforcement on the bottom of the tunnel;

[0060] After the grouting device 4 completes the grouting reinforcement of the bottom of the tunnel, the grouting device 4 is controlled to move forward, and then the box culvert assembling device 7 is controlled to assemble the box culvert 5 on the bottom of the tunnel after the grouting reinforcement is completed.

[0061] Figure 4 and Figure 5 The deep hole grouting process behind the segment wall of the embodiment of the present invention is shown. After the box culvert is assembled, the grouting device 4 is driven by the driving device to move to the front of the assembled box culvert 5. At this time, the drilling rig 43 can rotate left and right along the arc-shaped second track to perform grouting on different points of the segment 6. The drill rod 432 and the telescopic mechanism can move up and down along the bearing component 41 to form reinforcement piles 8 of different depths. A signal receiving system is set on the arc-shaped second track. When the box culvert is assembled and the box culvert assembly device 7 leaves, the box culvert crane transmits the limit number to the arc-shaped track car, and the arc-shaped second track drives to the grouting area in front of the assembled box culvert. The construction parameters are given to the drilling rig in real time based on the geology explored in the early stage, and deep hole grouting reinforcement behind the segment wall is performed. The whole process can be realized unmanned.

[0062] See also Figure 6 and Figure 7A schematic diagram is shown of the grouting device 4 leaving the grouting area. In order not to affect the assembly of the next box culvert 5, the grouting device 4 needs to move forward at this time to provide space for the assembly of the next box culvert. When the grouting device 4 leaves the grouting area, it can send a signal to the box culvert crane. After receiving the signal, the box culvert assembly device 7 drives to the bottom of the frame 1 to assemble the box culvert. This cycle can realize automatic grouting reinforcement of the segment wall of the entire tunnel.

[0063] In this embodiment, the frame carrying the first guide rail includes an equipment bridge of the tunnel boring machine. Of course, the frame carrying the load can also be selected to be at other positions according to the grouting points and construction procedures.

[0064] According to another aspect of the present application, a tunnel boring machine is also provided, and the tunnel boring machine includes the above-mentioned grouting system.

[0065] According to another aspect of the present application, a grouting method of the above-mentioned grouting system is also provided, and the grouting method comprises:

[0066] Control the grouting device 4 to move along the length direction of the tunnel boring machine to the front of the assembled box culvert 5;

[0067] Controlling the grouting device 4 to perform grouting reinforcement on the bottom of the tunnel;

[0068] After the grouting device 4 completes the grouting reinforcement of the bottom of the tunnel, the box culvert assembling device 7 is controlled to assemble the box culvert 5 on the bottom of the tunnel after the grouting reinforcement.

[0069] The synchronous segment wall rear grouting system of the tunnel boring machine of this embodiment can perform grouting reinforcement on the bottom of the tunnel, which can effectively improve the firmness of the bottom of the tunnel and is conducive to improving the problem of route settlement on the segment 6 after tunnel formation in the related art.

[0070] In some embodiments, after the grouting device 4 completes the grouting reinforcement of the bottom of the tunnel, the grouting device 4 moves forward, and then controls the box culvert assembly device 7 to assemble the box culvert 5 on the bottom of the tunnel after the grouting reinforcement. After the grouting is completed, the grouting device 4 is moved forward a certain distance, which is conducive to ensuring the working space of the box culvert assembly device 7.

[0071] In this application, in order to solve the problem of route settlement on the segment 6 after tunnel formation, a grouting system for deep holes behind the wall is provided, which is divided into general deep hole grouting reinforcement and rotary jet pile reinforcement (MJS) according to the reinforcement diameter. The grouting system can be equipped with different processes such as ordinary spraying or rotary jetting according to the geology.

[0072] The grouting system of this embodiment is a synchronous segment wall back-end deep hole grouting system that can be mounted on the top of the tunnel boring machine, mainly comprising a moving component 3 and a mounted deep hole grouting system (MJS), wherein the deep hole grouting system comprises a multi-mode drill bit, a large-angle rotating retractable drill rod and an intelligent detection system.

[0073] The grouting system can realize grouting while the shield is excavating, without affecting other construction processes, and can achieve synchronous grouting of the tunnel boring machine. The grouting segments can effectively prevent settlement.

[0074] Therefore, according to the present invention, the grouting effect of the shield can be achieved more efficiently. Grouting can be carried out while excavating to avoid subsequent repeated construction, reduce construction procedures, improve construction efficiency, and effectively prevent route settlement. Moreover, the construction method is simple and feasible, and the device is simple and easy to manufacture, and can be widely used in tunnel construction.

[0075] The above are merely exemplary embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A synchronous segment wall back grouting system for tunnel boring machines, It is characterized in that include: Rack(1); A first rail (2) mounted on the frame (1) and extending along the length direction of the tunnel boring machine; A moving component (3) movably mounted on the first track (2); as well as A grouting device (4) is installed below the moving component (3) and is configured to rotate relative to the moving component (3) in a plane perpendicular to the first track (2) to perform grouting reinforcement at multiple locations on the bottom of the tunnel.

2. The grouting system according to claim 1, It is characterized in that The grouting device (4) comprises: a bearing component (41) mounted on the moving component (3) and configured to rotate relative to the moving component (3) in a plane perpendicular to the first track (2); A drilling machine (43) is mounted on the bearing component (41) and is configured to move radially relative to the bearing component (41) along an axis of rotation of the grouting device (4) relative to the moving component (3); the drilling machine (43) comprises a drill bit (431) on which a grouting hole is provided.

3. The grouting system according to claim 2, It is characterized in that The grouting device (4) further comprises a telescopic component (42), wherein the telescopic component (42) is mounted on the bearing component (41) and is configured to move along the radial direction relative to the bearing component (41), and the drilling rig (43) is mounted on the telescopic component (42).

4. The grouting system according to claim 2, It is characterized in that The drilling machine (43) is configured to move in the radial direction relative to the telescopic member (42).

5. The grouting system according to claim 1, It is characterized in that The moving component (3) comprises a second arc-shaped track, and the grouting device (4) is configured to move along the second track so that the grouting device (4) rotates in a plane perpendicular to the first track (2).

6. The grouting system according to claim 1, It is characterized in that It also includes a box culvert assembly device (7) for assembling the box culvert (5); the box culvert assembly device (7) is installed on the frame (1) and is configured to move along the length direction of the tunnel boring machine.

7. The grouting system according to claim 6, It is characterized in that It also includes a first driving component for driving the moving component (3) to move along the length direction of the tunnel boring machine, and a controller connected to the first driving component and the box culvert assembly device (7) by signals, wherein the controller is configured to: After the box culvert assembly device (7) completes the assembly of the box culvert (5), the grouting device (4) is controlled to move to the front of the assembled box culvert (5) to perform grouting reinforcement on the bottom of the tunnel; After the grouting device (4) completes grouting reinforcement of the bottom of the tunnel, the grouting device (4) is controlled to move forward, and then the box culvert assembly device (7) is controlled to assemble the box culvert (5) on the bottom of the tunnel after grouting reinforcement.

8. A tunnel boring machine, It is characterized in that A grouting system comprising any one of claims 1 to 7.

9. A grouting method for a grouting system according to any one of claims 1 to 7, It is characterized in that include: Controlling the grouting device (4) to move along the length direction of the tunnel boring machine to the front of the assembled box culvert (5); Controlling the grouting device (4) to perform grouting reinforcement on the bottom of the tunnel; After the grouting device (4) completes grouting reinforcement of the bottom of the tunnel, the box culvert assembly device (7) is controlled to assemble the box culvert (5) on the bottom of the tunnel after grouting reinforcement.

10. The grouting method according to claim 9, It is characterized in that After the grouting device (4) completes grouting reinforcement of the bottom of the tunnel, the device (4) is controlled to move forward, and then the box culvert assembly device (7) is controlled to assemble the box culvert (5) on the bottom of the tunnel after grouting reinforcement.

Images