Shield tunneling device for detecting the attitude of the tunnel passing under the pile area of ​​a building complex

Abstract

This invention relates to the field of tunnel boring machine (TBM) construction technology, specifically disclosing a TBM construction device for detecting the attitude of a tunnel passing under a pile group of buildings. The device includes a TBM body and a cutterhead. An advanced detection radar is installed at the front end of the TBM body, enabling the detection of the attitude of the piles ahead. The cutterhead is equipped with pile-cutting cutters. An installation groove is provided on the outer ring side of the cutterhead, and an installation plate is installed within the groove. An electric telescopic rod is installed within the groove, driving the installation plate to slide reciprocally along the radial direction of the cutterhead. A trenching device is fixedly connected to the installation plate. The arc-shaped surface of the cutterhead has clearance holes corresponding to the trenching device. A wire feeding device is provided on the TBM body. The beneficial effects of this invention are: during the process of the cutterhead cutting the piles, the trenching device extends outward and excavates reinforcement grooves on two sections of residual pile. The wire feeding device is used to transport steel wire to the trenching device. During the trenching process, the trenching device draws the steel wire into a ring-shaped reinforcement ring and places it within the reinforcement groove.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) construction technology, and in particular to a TBM construction device for detecting the attitude of a tunnel passing under a pile group of buildings. Background Technology

[0002] The tunnel passing under a pile group of buildings means that during construction, the tunnel boring machine (TBM) passes under the base of the buildings, which contain numerous piles. Therefore, during TBM construction, the TBM needs to be equipped with advanced detection radar to detect the orientation of the piles ahead. Once the orientation is determined, excavation can proceed. During excavation, the TBM cutterhead may sever the piles at the bottom or middle. This severance may affect the supporting capacity of the remaining piles. The remaining piles, under the pressure transmitted from the building above, may further sink. Since these piles are located at the top of the tunnel, their sinking could also cause tunnel deformation. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings includes a shield machine body and a cutterhead. An advanced detection radar is installed at the front of the shield machine body, which can detect the attitude of the piles ahead. The cutterhead is equipped with pile-cutting cutters, and an installation groove is provided on the outer ring side of the cutterhead. An installation plate is installed in the installation groove, and an electric telescopic rod is installed inside the installation groove. The electric telescopic rod drives the installation plate to slide back and forth radially along the cutterhead. A trenching device is fixedly connected to the installation plate. The arc-shaped surface of the cutterhead has clearance holes corresponding to the trenching device. A wire feeding device is provided on the shield machine body, which feeds steel wire to the trenching device. After the pile is cut by the cutterhead, two residual pile sections remain. The trenching device excavates a reinforcement trench on the two residual pile sections. During the trenching process, the trenching device pulls the steel wire into a ring-shaped reinforcement ring and places it in the reinforcement trench.

[0006] Preferably, the grooving device includes a cutter holder, on which a grooving cutter is fixedly connected, and the cutter holder is also provided with a clamping device.

[0007] Preferably, the clamping device includes two sliding blocks that slide on the tool holder and are fixedly connected to a return spring. Each sliding block has a triangular block fixedly connected to one side, with the inclined surface of the triangular block positioned away from the sliding block. A slot corresponding to the triangular block is provided on the clearance hole. During the tool holder's ascent, the sliding blocks and triangular blocks also rise. When the triangular blocks rise, the slot exerts a squeezing force on the inclined surface of the triangular blocks, causing the triangular blocks to move toward the center of the tool holder. During this movement, the two triangular blocks squeeze the sliding blocks, causing them to approach each other and generate a clamping force. When the tool holder descends, the squeezing force of the two triangular blocks on the sliding blocks disappears, and the two sliding blocks separate under the action of the return spring.

[0008] Preferably, an inclined plate is fixedly connected to one side of the mounting plate, and the arc surface of the cutter head is provided with a relief groove corresponding to the inclined plate. When the grooving device extends to the outside of the cutter head, the inclined plate also extends to the outside of the cutter head. Some of the gravel generated when the grooving device grooves is squeezed into the reinforcement groove dug by the grooving device under the action of the inclined plate.

[0009] Preferably, the wire feeding device includes a hydraulic cylinder fixed inside the shield machine body, the telescopic end of the hydraulic cylinder is fixedly connected to a base plate, a fixing plate is fixedly connected to one side of the base plate, a wire spool is provided on the fixing plate, a wire spool is wound on the wire spool, multiple sets of guide wheels are mounted on the base plate, the wire on the wire spool passes through the guide wheels, one end of the wire is fixedly connected to a transverse wire, and a cutting device is mounted on the base plate.

[0010] Preferably, the tunnel boring machine has a doorway on its body, through which the wire feeding device can pass, and an electric door is installed on the doorway.

[0011] The beneficial effects of this invention are as follows: During the process of the cutterhead cutting the building piles, the shield tunneling device provided by this invention extends outward and excavates reinforcement grooves on the two remaining piles. The wire feeding device is used to transport steel wire to the cutting device. During the excavation process, the cutting device pulls the steel wire into a ring-shaped reinforcement ring and places it in the reinforcement groove. When grouting is carried out after the shield tunnel segments are installed, the grout will mix into the reinforcement groove. The reinforcement ring acts as the skeleton structure of the grout, which can support the two remaining piles and prevent the upper remaining pile from deforming and displacing downward after the building pile is cut. Attached Figure Description

[0012] Figure 1 This is a basic structural diagram of the shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings, provided by the present invention.

[0013] Figure 2 yes Figure 1 Enlarged view of point A;

[0014] Figure 3 yes Figure 1 Enlarged view at point M;

[0015] Figure 4 This is a schematic diagram of the wire feeding device;

[0016] Figure 5 This is a diagram showing the operating status of the wire feeding device;

[0017] Figure 6 yes Figure 5 Enlarged view of point N;

[0018] Figure 7 This is a diagram showing the state of the steel wire forming a reinforcing ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] like Figures 1-7 As shown, the shield tunneling device for detecting the attitude of the tunnel passing under the pile area of ​​a building group in this embodiment includes a shield machine body 100 and a cutterhead 200. The front end of the shield machine body 100 is equipped with an advanced detection radar, which can detect the attitude of the building piles 300 in front. The advanced detection radar is existing technology, and how the advanced detection radar detects the attitude of the building piles 300 is also existing technology, which will not be described in detail here.

[0021] The cutter head 200 is equipped with a pile-cutting tool, which is also existing technology and will not be described in detail here. The outer ring side of the cutter head 200 has a mounting groove 210, within which a mounting plate 2 is installed. An electric telescopic rod 3 is installed within the mounting groove 210. The electric telescopic rod 3 drives the mounting plate 2 to slide reciprocally along the radial direction of the cutter head 200. Since the cutter head 200 rotates continuously, the electric telescopic rod 3 cannot be powered; in this example, the electric telescopic rod 3 is battery-powered. A grooving device 5 is fixedly connected to the mounting plate 2. The arc-shaped surface of the cutter head 200 has clearance holes corresponding to the grooving device 5. The grooving device 5 includes a tool holder 50, on which a grooving cutter 51 is fixedly connected. The tool holder 50 also has a clamping device. The clamping device includes two sliding blocks 53, which slide on the cutterhead 50 and are fixedly connected to a return spring. A triangular block 52 is fixedly connected to one side of each sliding block 53. A slot corresponding to the triangular block 52 is provided on the clearance hole. During the upward movement of the cutterhead 50, the two triangular blocks 52 compress the sliding blocks 53, causing them to move closer together and generate a clamping force. During the downward movement of the cutterhead 50, the compressive force of the two triangular blocks 52 on the sliding blocks 53 disappears, and the two sliding blocks 53 separate under the action of the return spring. A wire feeding device 1 is provided on the shield machine body 100. A doorway 110 is provided on the shield machine body 100, through which the wire feeding device 1 can pass. An electric door 120 is installed on the doorway 110. The electric door 120 is existing technology and will not be described further. The wire feeding device 1 includes a hydraulic cylinder 18 fixed inside the shield machine body 100. The telescopic end of the hydraulic cylinder 18 is fixedly connected to a base plate 11. A fixing plate 12 is fixedly connected to one side of the base plate 11. A wire reel 13 is provided on the fixing plate 12. Multiple sets of guide wheels 16 are mounted on the base plate 11. The wire 14 on the wire reel 13 passes through the guide wheels 16. One end of the wire 14 is fixedly connected to a transverse wire 15. A cutting device 17 is mounted on the base plate 11. The cutting device 17 is prior art and is used to cut the wire 14 when necessary. This is prior art and will not be described in detail here.

[0022] The above-mentioned shield tunneling device for detecting the attitude of the pile area under the building group is used as follows: The attitude of the building pile 300 in front can be detected by the advanced detection radar. After confirming the attitude of the building pile 300, when the cutterhead 200 encounters the building pile, the cutterhead 200 cuts the middle of the building pile 300 with the pile cutting tool. After the building pile 300 is cut off, two sections of the pile remain. During the process of the cutterhead 200 cutting the building pile 300, the electric telescopic rod 3 pushes the trenching device 5 to extend outward. As the cutterhead rotates, the trenching tool 51 digs out the reinforcement trench 800 on the two sections of the pile. Meanwhile, the wire feeding device 1 delivers the steel wire to the trenching device 5. Specifically, the electric door 120 is opened first, making the doorway 110 open. The hydraulic cylinder 18 pushes the base plate 11 through the doorway 110 and close to the trenching device 5. At the same time, the clamping device clamps the transverse wire 15 at one end of the steel wire 14. As the trenching device 5 digs the trench, the clamping device pulls the steel wire 14 into a ring-shaped reinforcing ring 900 and places it in the reinforcing groove 800. The ring-shaped reinforcing ring 900 is thus placed between the two residual piles. When grouting is performed after the shield tunnel segments are installed, the grout will mix into the reinforcing groove 800. The reinforcing ring 900 acts as the skeleton structure of the grout, which can support the two residual piles and prevent the residual piles above from deforming and shifting downward after the building pile 300 is cut off, thus affecting the shield tunnel segments. The reinforcing ring 900, which is wrapped in grout, can provide a certain amount of support. To further enhance the support strength for the remaining pile above, an inclined plate 4 is fixedly connected to one side of the mounting plate 2. The arc-shaped surface of the cutterhead 200 is provided with a clearance groove corresponding to the inclined plate 4. When the trenching device 5 extends to the outside of the cutterhead 200, the inclined plate 4 also extends to the outside of the cutterhead 200. Some of the gravel generated by the trenching device 5 during trenching is squeezed into the reinforcement trench 800 excavated by the trenching device 5 under the action of the inclined plate 4. When injecting concrete grout, the gravel squeezed into the reinforcement trench 800 can act as coarse aggregate. After the grouting is completed, the support strength of the reinforcement ring 900 can be further improved with the support of the coarse aggregate.

Claims

1. A shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings, comprising a shield machine body (100) and a cutterhead (200), wherein the front end of the shield machine body (100) is equipped with an advanced detection radar, which can detect the attitude of the piles (300) in front, and the cutterhead (200) is equipped with pile cutting tools, characterized in that: The cutterhead (200) has an installation groove (210) on its outer ring side. The installation groove (210) has an installation plate (2) inside it. The installation groove (210) is equipped with an electric telescopic rod (3). The electric telescopic rod (3) is used to drive the installation plate (2) to slide back and forth along the radial direction of the cutterhead (200). The installation plate (2) is fixedly connected to the trenching device (5). The arc surface of the cutterhead (200) has a clearance hole corresponding to the trenching device (5). The shield machine body (100) is equipped with a wire feeding device (1). The wire feeding device (1) delivers the wire (14) to the trenching device (5). After the building pile (300) is cut by the cutterhead (200), two sections of residual pile remain. The trenching device (5) digs out a reinforcement groove (800) on the two sections of residual pile. During the trenching process, the trenching device (5) pulls the wire (14) into a ring-shaped reinforcement ring and places it in the reinforcement groove (800).

2. The shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings according to claim 1, characterized in that: The grooving device (5) includes a cutter holder (50), on which a grooving cutter (51) is fixedly connected, and a clamping device is also provided on the cutter holder (50).

3. The shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings according to claim 2, characterized in that: The clamping device includes two sliding blocks (53), which slide on the tool holder (50) and a return spring is fixedly connected between the sliding blocks (53). A triangular block (52) is fixedly connected to one side of each sliding block (53). The inclined surface of the triangular block (52) is set away from the sliding block (53). A slot corresponding to the triangular block (52) is provided on the clearance hole. During the process of the tool holder (50) rising, the sliding blocks (53) and the triangular blocks (52) also rise. When the triangular blocks (52) rise, the slot will exert a squeezing force on the inclined surface of the triangular blocks (52), so that the triangular blocks (52) move towards the middle of the tool holder (50). During the movement, the two triangular blocks (52) squeeze the sliding blocks (53), so that the two sliding blocks (53) move closer to each other and generate a clamping force. When the tool holder (50) descends, the squeezing force of the two triangular blocks (52) on the sliding blocks (53) disappears, and the two sliding blocks (53) separate under the action of the return spring.

4. The shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings according to claim 1, characterized in that: An inclined plate (4) is fixedly connected to one side of the mounting plate (2). The arc surface of the cutter head (200) is provided with a relief groove corresponding to the inclined plate (4). When the grooving device (5) extends to the outside of the cutter head (200), the inclined plate (4) also extends to the outside of the cutter head (200). Some of the gravel generated when the grooving device (5) grooves is squeezed into the reinforcement groove (800) dug by the grooving device (5) under the action of the inclined plate (4).

5. The shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings according to claim 1, characterized in that: The wire feeding device (1) includes a hydraulic cylinder (18) fixed inside the shield machine body (100). The telescopic end of the hydraulic cylinder (18) is fixedly connected to a base plate (11). A fixing plate (12) is fixedly connected to one side of the base plate (11). A wire spool (13) is provided on the fixing plate (12). A wire spool (14) is wound on the wire spool (13). Multiple sets of guide wheels (16) are mounted on the base plate (11). The wire spool (14) on the wire spool (13) passes through the guide wheels (16). One end of the wire spool (14) is fixedly connected to a transverse wire (15). A cutting device (17) is mounted on the base plate (11).

6. The shield tunneling device for detecting the attitude of a tunnel passing under a pile group of buildings according to claim 1, characterized in that: The shield machine body (100) is provided with a doorway (110), the wire feeding device (1) can pass through the doorway (110), and the doorway (110) is equipped with an electric door (120).

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