Positioning device for drainage hole in tunnel
By designing a drain hole positioning device for high-speed railway tunnel engineering, the problem of blockage of the drain hole blind pipe caused by imperfect drainage system is solved, and the precise positioning of the drainage hole blind pipe and the normal operation of the drainage function is achieved.
Patent Information
- Application Number
- CN202420819547.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-19
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-04-19
AI Technical Summary
In high-speed railway tunnel projects, imperfect drainage system leads to blockage of blind pipes in drainage holes, affecting the quality and drainage function of the tunnel project.
A drain hole positioning device in the tunnel is designed, including a square annular plate, a trapezoidal plate and a square plate. The positioning mechanism ensures the position of the drain hole blind tube and the drainage smoothly to avoid slurry leakage problems.
The precise positioning of the drain hole blind pipe and the normal operation of the drainage function are achieved, which avoids the slurry leakage problem and ensures the quality of the concrete.
Smart Images
Figure CN222894283U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel drainage, in particular to a drainage hole positioning device in a tunnel. Background Art
[0002] Drainage system problems are another reason for water seepage in high-speed railway tunnel projects. If the drainage system is not perfect, the water at the drainage point will accumulate in the tunnel, which will have a great impact on the quality of the tunnel project and the drainage function. The main problem with the drainage system is that the drainage pipes are not properly protected during the grouting process (the collapse of the drainage holes in the secondary lining pouring and the serious quality problems after pouring), which leads to the blockage of the drainage pipes and the obstruction of the drainage function.
[0003] Therefore, a device for positioning drainage holes in tunnels that can solve the above problems is needed. Summary of the invention
[0004] The purpose of the utility model is to provide a drainage hole positioning device in a tunnel based on the above-mentioned deficiencies of the prior art. The drainage hole positioning device can position and protect the drainage hole blind pipe to ensure smooth drainage of the drainage hole blind pipe, while avoiding leakage problems and ensuring the quality of concrete around the drainage hole blind pipe.
[0005] The purpose of this utility model is achieved by the following technical solutions:
[0006] A drainage hole positioning device in a tunnel, the drainage hole positioning device is fixed on a side wall formwork, the drainage hole positioning device comprises a square ring plate, a trapezoidal plate and a square plate, the four sides of the inner ring of the square ring plate are respectively connected to the four sides of the square plate through the trapezoidal plate, a wedge-shaped groove is formed between the trapezoidal plate and the square plate, a circular hole is opened in the middle of the square plate to allow a drainage hole blind pipe to pass through, a positioning mechanism for placing the drainage hole blind pipe is obliquely arranged on one side of the circular hole, the positioning mechanism comprises a placement steel bar, a supporting steel bar and a circular ring, the placement steel bar is arranged circumferentially along the bottom of the circular hole, the placement steel bar is connected to the square plate through the supporting steel bar, and the placement steel bars are connected through the circular ring.
[0007] A fastening bolt is installed at each of the four corners of the square ring plate, and the square ring plate is fixed to the side wall template through the fastening bolts.
[0008] A handle is respectively arranged on both sides of the square ring plate.
[0009] The diameter of the circular ring is equal to the diameter of the blind pipe of the drainage hole.
[0010] The angle between the placed steel bars and the square plate is 32°.
[0011] The utility model has the advantages of easy installation and disassembly, firm support, accurate and consistent position of the blind pipe of the drainage hole; ensuring a 6% slope of the blind pipe of the drainage hole and smooth drainage; avoiding the problem of slurry leakage and ensuring the quality of concrete around the blind pipe of the drainage hole. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a top view of the water leakage hole positioning device of the utility model;
[0013] Figure 2 It is a partial schematic diagram of the water leakage hole positioning device of the utility model;
[0014] Figure 3 This is a schematic diagram of the installation of the water leakage hole positioning device of the utility model;
[0015] Figure 4 The utility model is an installation process flow chart of the drainage hole positioning device. DETAILED DESCRIPTION
[0016] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:
[0017] like Figures 1 to 4 As shown, the marks in the figure represent respectively:
[0018] Square ring plate 1, trapezoidal plate 2, square plate 3, circular hole 4, placement of steel bars 5, supporting steel bars 6, circular ring 7, fastening bolts 8, handle 9, drainage hole blind pipe 10, annular blind pipe 11, longitudinal blind pipe 12, drainage hole positioning device 13, wedge-shaped groove 14.
[0019] Example: Figures 1 to 4 As shown, this embodiment relates to a drainage hole positioning device in a tunnel. The drainage hole positioning device 13 is fixed on the side wall formwork and is used to position and fix the drainage hole blind pipe 10. The drainage hole blind pipe 10 is connected to the annular blind pipe 11 and the longitudinal blind pipe 12 respectively.
[0020] like Figure 1~2As shown, the drainage hole positioning device 13 includes a square ring plate 1, a trapezoidal plate 2 and a square plate 3. The four sides of the inner ring of the square ring plate 1 are connected to the four sides of the square plate 3 through the trapezoidal plate 2. A wedge-shaped groove 14 is formed between the trapezoidal plate 2 and the square plate 3. The inner diameter of the wedge-shaped groove 14 gradually increases from one end to the other end. A circular hole 4 is opened in the middle of the square plate 3 to allow the drainage hole blind pipe 10 to pass through. A fastening bolt 8 is installed at each of the four corners of the square ring plate 1. The square ring plate 1 is fixed to the side wall template by the fastening bolts 8, so as to realize the disassembly and assembly of the drainage hole positioning device 13. A handle 9 is provided on each side of the square ring plate 1 to facilitate the grabbing of the drainage hole positioning device 13. A positioning mechanism for placing the drainage hole blind pipe 10 is obliquely arranged on one side of the circular hole 4, and the positioning mechanism includes a placement steel bar 5, a supporting steel bar 6 and a circular ring 7. A plurality of placement steel bars 5 are arranged circumferentially along the bottom of the circular hole 4, and an arc structure is formed between the placement steel bars 5. The shape and size of the placement steel bars 5 correspond to the shape and size of the drainage hole blind pipe 10, respectively, and can be used to support the drainage hole blind pipe 10, and the angle between the placement steel bars 5 and the square plate 1 is 32° to ensure that the slope of the drainage hole blind pipe 10 is 6%. The placement steel bars 5 are connected to the square plate 3 through the supporting steel bars 6, and the supporting steel bars 6 are used to strengthen the connection between the placement steel bars 5 and the square plate 3. The placement steel bars 5 are connected by a circular ring 7, and the diameter of the circular ring 7 is equal to the diameter of the drainage hole blind pipe 10, which is used to guide the drainage hole blind pipe 10.
[0021] like Figures 1 to 4 As shown, this embodiment also has the following construction method:
[0022] A hole is drilled at the designed position of the blind pipe of the drainage hole of the side wall template, and then the side wall template is installed, and the drainage hole positioning device 13 is fixed on the side wall template.
[0023] The drainage hole blind pipe 10 extends out of the side wall surface through the drainage hole positioning device 13.
[0024] The overall structure of the positioning mechanism is adjusted according to the designed diameter and angle of the drain hole blind pipe 10 .
[0025] The beneficial technical effects of this embodiment are: easy installation and disassembly, firm support, accurate and consistent position of the drainage hole blind pipe; ensuring a 6% slope of the drainage hole blind pipe and smooth drainage; avoiding leakage problems and ensuring the quality of concrete around the drainage hole blind pipe.
[0026] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.
Claims
1. A device for positioning a drainage hole in a tunnel, characterized in that: The drainage hole positioning device is fixed on the side wall formwork, and the drainage hole positioning device includes a square ring plate, a trapezoidal plate and a square plate. The four sides of the inner ring of the square ring plate are respectively connected to the four sides of the square plate through the trapezoidal plate. A wedge-shaped groove is formed between the trapezoidal plate and the square plate. A circular hole allowing the drainage hole blind pipe to pass through is opened in the middle of the square plate. A positioning mechanism for placing the drainage hole blind pipe is obliquely arranged on one side of the circular hole. The positioning mechanism includes a placement steel bar, a supporting steel bar and a circular ring. The placement steel bar is arranged circumferentially along the bottom of the circular hole. The placement steel bar is connected to the square plate through the supporting steel bar, and the placement steel bars are connected through the circular ring.
2. A device for positioning drain holes in a tunnel as claimed in claim 1, characterized in that: A fastening bolt is installed at each of the four corners of the square ring plate, and the square ring plate is fixed to the side wall template through the fastening bolts.
3. A device for positioning drain holes in a tunnel as claimed in claim 1, characterized in that: A handle is respectively arranged on both sides of the square ring plate.
4. A device for locating drainage holes in a tunnel as claimed in claim 1, characterized in that: The diameter of the circular ring is equal to the diameter of the blind pipe of the drainage hole.
5. A device for positioning drain holes in a tunnel as claimed in claim 1, characterized in that: The angle between the placed steel bars and the square plate is 32°.