Anchoring and supporting device for the excavation of a spillway tunnel

Abstract

The utility model belongs to the technical field of spillway tunnel body excavation, disclose a kind of anchor rod reinforcing support device of spillway tunnel body excavation, including support plate, the anchoring body being set in hole body, anchor rod assembly, support block and pedestal, the anchor rod assembly one end is anchored in the anchoring body, the anchor rod assembly other end passes through the support plate and extends to its outside, the support block is butted on the support plate, the pedestal is butted on the support block, the anchor rod assembly other end passes through support block and pedestal and extends to the outside of pedestal.Anchor rod assembly is set to the split structure of first anchor rod and second anchor rod in the utility model, and second anchor rod is screwed into first anchor rod, first anchor rod is screwed into anchoring body, when engineering needs to replace, adjust or disassemble anchor rod, second anchor rod can be simply disassembled, and anchor rod assembly can be disassembled as a whole, reduce the difficulty of engineering maintenance and overhaul.

Description

Technical Field

[0001] This utility model belongs to the field of spillway excavation technology, specifically relating to an anchor bolt reinforcement support device for spillway excavation. Background Technology

[0002] During the excavation of the spillway, due to complex geological conditions and changes in soil and rock stress, the surrounding rock is prone to deformation and collapse, seriously affecting the safety and stability of the project. To ensure the smooth progress of the spillway excavation and its safe and reliable subsequent use, effective reinforcement and support devices are needed to reinforce the surrounding rock.

[0003] Currently, in anchor bolt reinforcement support devices, anchor bolts mostly adopt an integrated design. This integrated anchor bolt is directly anchored in the anchor body and forms a whole with the surrounding rock through anchoring materials such as grout to provide support force. Since the anchor bolt is anchored entirely in the anchor body, it is difficult to remove the anchor bolt from the anchor body when the project needs to replace, adjust or dismantle the anchor bolt, which brings great difficulties to the maintenance and repair work of the project. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides an anchor bolt reinforcement support device for spillway excavation. It aims to solve, to a certain extent, the technical problem in the prior art where, because the anchor bolt is entirely anchored within the anchor body, it is difficult to remove the anchor bolt from the anchor body when the project requires replacement, adjustment, or disassembly, causing significant difficulties for project maintenance and repair.

[0005] The technical solution of this utility model is: an anchor reinforcement support device for the excavation of spillway tunnel body, including a support plate, an anchor body set in the tunnel body, an anchor assembly, a support block and a platform, one end of the anchor assembly is anchored into the anchor body, and the other end of the anchor assembly passes through the support plate and extends to its outside. The support block abuts against the support plate; The platform abuts against the support block, and the other end of the anchor bolt assembly passes through the support block and the platform and extends to the outside of the platform. The other end of the anchor bolt assembly is threaded with a first locking nut for locking and fixing the anchor bolt assembly. The anchor bolt assembly includes a first anchor bolt and a second anchor bolt. The first anchor bolt is threaded into the anchor body, and a fixing nut is fixedly sleeved on the outer end of the first anchor bolt. A threaded hole is provided in the middle of the interior of the first anchor bolt. The second anchor bolt is threaded into the interior of the threaded hole. A second locking nut is threaded on the outer surface of the second anchor bolt, and the second locking nut abuts against the fixing nut.

[0006] Preferably, the support plate, support block and base are all provided with through holes for the second anchor rod to pass through, and the diameter of the through holes is adapted to the diameter of the second anchor rod.

[0007] Preferably, the end of the second anchor rod away from the first anchor rod passes through the through hole and extends to the outside of the platform, and the first locking nut is threaded onto the end of the second anchor rod located on the outside of the platform.

[0008] Preferably, a washer is movably fitted on the second anchor rod, and the washer is located between the first locking nut and the base.

[0009] Preferably, the cavity is provided inside the cavern, and grout is injected into the cavity to form the anchor body. A grout stop plate is provided on the outside of the anchor body to prevent grout leakage. The fixing nut abuts against the slurry stop plate.

[0010] Preferably, the central anchor body inside the anchor body has a threaded sleeve, and the first anchor rod is threadedly inserted into the threaded sleeve.

[0011] Preferably, a gap is left between the grout stop plate and the inner wall of the cavity, and the fixing nut and the second locking nut are located within the gap.

[0012] Preferably, two crossbeams are provided between the pedestal and the support plate, and the two crossbeams are located on the upper and lower sides of the support block.

[0013] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. In this application, the anchor bolt assembly is configured as a split structure consisting of a first anchor bolt and a second anchor bolt, with the second anchor bolt threaded into the first anchor bolt and the first anchor bolt threaded into the anchor body. When the anchor bolt needs to be replaced, adjusted, or disassembled in the project, the second anchor bolt can be disassembled alone, or the entire anchor bolt assembly can be disassembled, making the disassembly of the anchor bolt assembly more convenient, reducing the difficulty of project maintenance and repair, and improving work efficiency.

[0014] 2. In this application, the support block abuts against the support plate, the platform abuts against the support block, and the other end of the anchor bolt assembly passes through the support block and the platform and extends to the outside of the platform. The anchor bolt assembly is then locked and fixed using the first locking nut, so that the tunnel body, support plate, anchor bolt assembly, support block and platform form a stable and reliable connection system. During the excavation of the spillway, it can effectively resist various forces caused by the stress changes of the rock and soil, and enhance the anchoring stability of the entire reinforcement support device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 In this utility model Figure 1 A schematic diagram of the partial structure at point A; Figure 3 This is a schematic diagram of the anchor bolt assembly structure in this utility model; Figure 4 This is a schematic diagram of the first anchor bolt structure in this utility model.

[0017] In the attached image:

[0018] 1. Support plate; 2. Tunnel body; 3. Anchor body; 4. Threaded sleeve; 5. Anchor bolt assembly; 51. First anchor bolt; 52. Fixing nut; 53. Threaded hole; 54. Second anchor bolt; 55. Second locking nut; 6. Support block; 7. Through hole; 8. Crossbeam; 9. Platform; 10. First locking nut; 11. Washer; 12. Receiving cavity; 13. Grout stop plate. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0020] like Figure 1 and Figure 2 As shown, an anchor bolt reinforcement support device for spillway excavation includes a support plate 1, an anchor body 3 installed inside the tunnel body 2, an anchor bolt assembly 5, a support block 6, and a platform 9. One end of the anchor bolt assembly 5 is anchored into the anchor body 3, and the other end of the anchor bolt assembly 5 passes through the support plate 1 and extends to its outer side. The support block 6 abuts against the support plate 1. The platform 9 abuts against the support block 6. The other end of the anchor bolt assembly 5 passes through the support block 6 and the platform 9 and extends to the outer side of the platform 9. A first locking nut 10 is threaded onto the other end of the anchor bolt assembly 5 to lock and fix the anchor bolt assembly 5, so that the tunnel body 2, support plate 1, anchor bolt assembly 5, support block 6, and platform 9 form a stable and reliable connection system. During the excavation of the spillway, it can effectively resist various forces caused by changes in rock and soil stress, and enhance the anchoring stability of the entire reinforcement support device.

[0021] like Figure 3 and Figure 4 As shown, the anchor bolt assembly 5 includes a first anchor bolt 51 and a second anchor bolt 54. The first anchor bolt 51 is threaded into the anchor body 3, and a fixing nut 52 is fixedly sleeved on the outer end of the first anchor bolt 51. A threaded hole 53 is provided in the middle of the interior of the first anchor bolt 51, and the second anchor bolt 54 is threaded into the interior of the threaded hole 53. A second locking nut 55 is threaded on the outer surface of the second anchor bolt 54 and abuts against the fixing nut 52. The anchor bolt assembly 5 is configured as a split structure consisting of the first anchor bolt 51 and the second anchor bolt 54, with the second anchor bolt 54 threaded into the first anchor bolt 51 and the first anchor bolt 51 threaded into the anchor body 3. When the anchor bolts need to be replaced, adjusted, or disassembled in the project, the second anchor bolt 54 can be disassembled alone, or the entire anchor bolt assembly 5 can be disassembled, making the disassembly of the anchor bolt assembly 5 more convenient, reducing the difficulty of project maintenance and repair, and improving work efficiency.

[0022] like Figure 2 As shown, the support plate 1, the support block 6 and the base 9 are all provided with through holes 7 for the second anchor rod 54 to pass through. The diameter of the through hole 7 is matched with the diameter of the second anchor rod 54, which facilitates the assembly of the anchor rod assembly 5 with the support plate 1, the support block 6 and the base 9.

[0023] like Figure 2 As shown, the end of the second anchor rod 54 away from the first anchor rod 51 passes through the through hole 7 and extends to the outside of the base 9. The first locking nut 10 is threaded onto the end of the second anchor rod 54 located on the outside of the base 9, which can tightly fix the second anchor rod 54 to the base 9.

[0024] like Figure 2 As shown, a washer 11 is movably fitted on the second anchor rod 54, and the washer 11 is located between the first locking nut 10 and the base 9. When the first locking nut 10 is tightened, the washer 11 can distribute the tightening force to avoid excessive local pressure from damaging the base 9. At the same time, the washer 11 can also play a certain buffering role to reduce the friction and wear between the first locking nut 10 and the base 9.

[0025] like Figure 2 As shown, a cavity 12 is provided inside the cavity 2. Grout is injected into the cavity 12 to form an anchor body 3. A grout stop plate 13 is provided on the outside of the anchor body 3 to prevent grout leakage.

[0026] like Figure 2As shown, the central anchor body 3 has a threaded sleeve 4. The first anchor rod 51 is threaded into the threaded sleeve 4, and the fixing nut 52 abuts against the grout stop plate 13. By turning the fixing nut 52 with a wrench or other tools, the threaded end of the first anchor rod 51 can be accurately screwed into the threaded sleeve 4. At the same time, the fixing nut 52 is tightly abutted against the grout stop plate 13, thus achieving a stable connection of the first anchor rod 51.

[0027] like Figure 2 As shown, there is a gap between the grout stop plate 13 and the inner wall of the cavity 2. The fixing nut 52 and the second locking nut 55 are located in the gap, providing operating space for the installation and adjustment of the fixing nut 52 and the second locking nut 55.

[0028] like Figure 1 and Figure 2 As shown, two crossbeams 8 are provided between the base 9 and the support plate 1. The two crossbeams 8 are located on the upper and lower sides of the support block 6, which enhances the stability of the connection between the support plate 1 and the tunnel 2.

[0029] When in use, firstly, a receiving cavity 12 is opened in the cave body 2 and grout is injected to form an anchor body 3, and a bolt sleeve 4 is anchored in the middle of the anchor body 3, and grout leakage is prevented by a grout stop plate 13. By rotating the fixing nut 52, the threaded end of the first anchor rod 51 can be screwed into the threaded sleeve 4, and the fixing nut 52 abuts against the grout stop plate 13, thus installing the first anchor rod 51. Then, the second anchor rod 54 is threaded into the threaded hole 53 of the first anchor rod 51, and is fixed by the second locking nut 55 abutting against the fixing nut 52. The second anchor rod 54 extends through the through hole 7 on the support plate 1, the support block 6 and the base 9 to the outside of the base 9. The first locking nut 10 is threaded onto the end of the second anchor rod 54 located on the outside of the base 9, and the second anchor rod 54 is tightly fixed to the base 9 with the help of the washer 11.

[0030] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anchor bolt reinforcement support device for the excavation of a spillway tunnel, characterized in that, include: Support plate (1); Anchor body (3) is installed inside the tunnel (2); An anchor bolt assembly (5) has one end anchored into the anchor body (3) and the other end passing through the support plate (1) and extending to its outer side; Support block (6) abuts against the support plate (1); The base (9) abuts against the support block (6), and the other end of the anchor rod assembly (5) passes through the support block (6) and the base (9) and extends to the outside of the base (9). The other end of the anchor rod assembly (5) is threaded with a first locking nut (10) for locking and fixing the anchor rod assembly (5). The anchor bolt assembly (5) includes a first anchor bolt (51) and a second anchor bolt (54). The first anchor bolt (51) is threaded into the anchor body (3), and a fixing nut (52) is fixedly sleeved on the outer end of the first anchor bolt (51). A threaded hole (53) is provided in the middle of the interior of the first anchor bolt (51). The second anchor bolt (54) is threaded into the interior of the threaded hole (53). A second locking nut (55) is threaded on the outer surface of the second anchor bolt (54), and the second locking nut (55) abuts against the fixing nut (52).

2. The anchor bolt reinforcement support device for spillway tunnel excavation as described in claim 1, characterized in that, The support plate (1), the support block (6) and the base (9) are all provided with through holes (7) for the second anchor rod (54) to pass through, and the diameter of the through hole (7) is adapted to the diameter of the second anchor rod (54).

3. The anchor bolt reinforcement support device for spillway tunnel excavation as described in claim 2, characterized in that, The end of the second anchor rod (54) away from the first anchor rod (51) passes through the through hole (7) and extends to the outside of the platform (9), and the first locking nut (10) is threaded onto the end of the second anchor rod (54) located outside the platform (9).

4. The anchor bolt reinforcement support device for spillway tunnel excavation as described in claim 3, characterized in that, A gasket (11) is movably fitted on the second anchor rod (54), and the gasket (11) is located between the first locking nut (10) and the base (9).

5. The anchor bolt reinforcement support device for spillway tunnel excavation as described in claim 4, characterized in that, The cavity (2) is provided with a receiving cavity (12), and grout is injected into the receiving cavity (12) to form the anchor body (3). A grout stop plate (13) is provided on the outside of the anchor body (3) to prevent grout leakage.

6. The anchor bolt reinforcement support device for spillway tunnel excavation as described in claim 5, characterized in that, The anchor body (3) has a central anchor sleeve (4) inside, and the first anchor rod (51) is threaded into the sleeve (4).

7. The anchor bolt reinforcement support device for spillway tunnel excavation as described in claim 6, characterized in that, There is a gap between the grout stop plate (13) and the inner wall of the cavity (2), and the fixing nut (52) and the second locking nut (55) are located in the gap.

8. The anchor bolt reinforcement support device for spillway tunnel excavation as described in claim 1, characterized in that, Two crossbeams (8) are provided between the pedestal (9) and the support plate (1), and the two crossbeams (8) are located on the upper and lower sides of the support block (6).

Images