Prestressed anchoring structure for hydraulic tunnel
By adopting a combined structure of anchor sleeve and stabilizer in the prestressed anchor structure of hydraulic tunnels, and using the design of fixed claws through the through grooves, the problem that the existing anchor structure is prone to fall off when the surrounding rock is deformed, achieving a more stable anchoring effect.
Patent Information
- Application Number
- CN202420430598.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-06
AI Technical Summary
The existing prestressed anchor structure of hydraulic tunnels is prone to fall off when the surrounding rock deforms, resulting in support failure.
The structure of two workpieces of the anchor sleeve and the stabilizer is adopted. The anchor sleeve is fixed inside the rock layer. The stabilizer is fixed to the outside through the slot of the anchor sleeve through the fixing claws, thereby enhancing the anchoring effect.
Through this structure, the fixing effect of the anchor sleeve is significantly enhanced, reducing the probability of support failure caused by surrounding rock deformation, and simple operation.
Smart Images
Figure CN222542469U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tunnel construction, in particular to a prestressed anchoring structure for a hydraulic tunnel. Background Art
[0002] During the construction of a hydraulic tunnel, it is necessary to install an anchoring structure on the surrounding wall of the tunnel to support the hydraulic tunnel, thereby improving the stability of the surrounding rock of the hydraulic tunnel. However, in the prior art, since the anchoring structure has a weak ability to resist deformation of the surrounding rock, the anchoring structure support may fail easily due to deformation of the surrounding rock.
[0003] There are many existing technologies for prestressed anchor structures in hydraulic tunnels, such as:
[0004] Chinese patent publication number CN215718866U discloses a prestressed anchoring structure for a hydraulic tunnel, comprising an anchor sleeve, a prestressed rod body, a limit seat and a limit clamp; wherein the anchor sleeve comprises a first section and a second section, the first section being connected to the second section; the first section is provided with a conical cavity, the inner diameter of the conical cavity gradually decreases along the direction from the first section to the second section; the second section is provided with a channel, the channel being connected to the conical cavity; the prestressed rod body comprises a first rod body and a second rod body, the first rod body being connected to the second rod body, and the first rod body being accommodated in the conical cavity and the channel, and the second rod body being used for anchoring in the rock formation of the hydraulic tunnel; the limit seat and the limit clamp are both connected to the prestressed rod body; the prestressed anchoring structure for a hydraulic tunnel can reduce the probability of support failure of the prestressed anchoring structure for a hydraulic tunnel due to the deformation force of the surrounding rock during the support process.
[0005] It can be seen that most prestressed anchoring structures of hydraulic tunnels include anchoring sleeves. By setting a conical cavity in the anchoring sleeve and using the prestressed rod to pass through the conical cavity and fix it in the rock formation, the probability of support failure of the prestressed anchoring structure of the hydraulic tunnel due to the deformation force of the surrounding rock during the support process is reduced. However, this method of directly inserting the anchoring sleeve into the rock formation can only fix the anchoring sleeve in the rock formation like a nail. When the surrounding rock is deformed, the anchoring sleeve is still easy to fall off from the rock formation.
[0006] In view of this, we propose a prestressed anchoring structure for hydraulic tunnels. Utility Model Content
[0007] The purpose of the utility model is to solve the above-mentioned shortcomings and provide a hydraulic tunnel prestressed anchoring structure with enhanced anchoring stability.
[0008] By configuring the equipment to be composed of two workpieces, namely an anchor sleeve and a stabilizing member, during installation, it is only necessary to fix the anchor sleeve in the rock formation and then fix the stabilizing member in the anchor sleeve to complete the installation. The overall operation is simple. By providing through grooves on the four sides of the shell of the anchor sleeve and providing a fixing claw at one end of the stabilizing member, when the stabilizing member moves in the shell, the fixing claw extends from the inside of the shell to the outside of the shell through the through groove, thereby enhancing the fixing effect of the anchor sleeve.
[0009] Therefore, the utility model provides a prestressed anchoring structure for a hydraulic tunnel, including an anchoring sleeve and a stabilizing member, wherein the anchoring sleeve includes a shell, the shell is hollow, a conical soil-breaking tip is provided at one end of the bottom of the shell, through grooves are provided on four sides of the shell, and the stabilizing member includes a column sliding in the shell, a fixing claw is provided at one end of the column, and the fixing claw passes through the through groove and extends from the inside of the shell to the outside.
[0010] As a further improvement of the technical solution, an expansion end is fixed at the bottom of the inner cavity of the shell, and the fixing claws of the column pass through the expansion end and expand to four sides.
[0011] As a further improvement of the technical solution, a fixing column is fixed to the top of the unfolded end, a through hole is provided in the column, and the fixing column is snapped into the through hole to limit the column in the direction of the shell.
[0012] As a further improvement of the technical solution, a thread groove is provided at one end of the fixing column, and the fixing member is fixed in the shell by thread rotation. A hanging ring is provided on the top of the shell and is rotatably connected to the shell.
[0013] As a further improvement of the technical solution, a baffle is rotatably connected to one side of the through groove to prevent soil from entering the shell, and a stopper is symmetrically provided on one side of the baffle.
[0014] Compared with the prior art, the utility model has the following beneficial effects:
[0015] 1. In the prestressed anchoring structure of the hydraulic tunnel, through grooves are provided on four sides of the shell of the anchor sleeve, and a fixing claw is provided at one end of the stabilizing member. When the stabilizing member moves in the shell, the fixing claw extends from the inside of the shell to the outside of the shell through the through groove, thereby enhancing the fixing effect of the anchor sleeve.
[0016] 2. In the prestressed anchoring structure of the hydraulic tunnel, by setting the equipment into two workpieces, namely, an anchor sleeve and a stabilizing member, during installation, it is only necessary to fix the anchor sleeve in the rock formation and then fix the stabilizing member in the anchor sleeve to complete the installation, and the overall operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is an overall schematic diagram of an embodiment;
[0018] Figure 2is a cross-sectional view of an anchor sleeve of an embodiment;
[0019] Figure 3 2 is a cross-sectional view of a stabilizing member according to an embodiment.
[0020] The meaning of each number in the figure is:
[0021] 100. Anchor sleeve; 101. Shell; 102. Ground-breaking tip; 103. Expanding end; 104. Fixing column; 105. Threaded groove; 106. Hanging ring; 107. Through groove; 108. Stop block; 109. Baffle; 110. Stabilizing member; 111. Column; 112. Through hole; 113. Fixing claw. DETAILED DESCRIPTION
[0022] Most prestressed anchoring structures of hydraulic tunnels include anchoring sleeves. By setting a conical cavity in the anchoring sleeve and using the prestressed rod to pass through the conical cavity and fix it in the rock formation, the probability of support failure of the prestressed anchoring structure of the hydraulic tunnel due to the deformation force of the surrounding rock during the support process is reduced. However, this method of directly inserting the anchoring sleeve into the rock formation can only fix the anchoring sleeve in the rock formation like a nail. When the surrounding rock is deformed, the anchoring sleeve is still easy to fall off from the rock formation.
[0023] like Figure 1-Figure 3 As shown, this embodiment provides a prestressed anchoring structure for a hydraulic tunnel, including an anchor sleeve 100 and a stabilizing member 110. Considering the fixation of the anchor sleeve 100, the anchor sleeve 100 includes a shell 101. The shell 101 is hollow. A conical ground-breaking tip 102 is provided at one end of the bottom of the shell 101. Considering the fixation of the anchor sleeve 100, through grooves 107 are provided on four sides of the shell 101. The stabilizing member 110 includes a column 111 sliding on the shell 101. A fixing claw 113 is provided at one end of the column 111. The fixing claw 113 passes through the through groove 107 and extends from the inside of the shell 101 to the outside.
[0024] The improvement of this embodiment lies in that: by configuring the equipment to be two workpieces, namely an anchor sleeve 100 and a stabilizing member 110, during installation, it is only necessary to fix the anchor sleeve 100 in the rock formation and then fix the stabilizing member 110 in the anchor sleeve 100 to complete the installation, and the overall operation is simple. By providing through grooves 107 on the four sides of the shell 101 of the anchor sleeve 100 and providing a fixing claw 113 at one end of the stabilizing member 110, when the stabilizing member 110 moves in the shell 101, the fixing claw 113 extends from the inside of the shell 101 to the outside of the shell 101 through the through groove 107, thereby enhancing the fixing effect of the anchor sleeve 100.
[0025] In order to prevent the external component from being fixed on the fixing member 110 and to prevent the fixing claw 113 from being unable to unfold when the fixing member 110 slides in the housing 101 , a second embodiment of the present invention is shown.
[0026] The bottom of the inner cavity of the shell 101 is fixed with an expansion end 103, and the fixing claw 113 of the column 111 passes through the expansion end 103 and expands to four sides, so as to avoid the situation that the fixing claw 113 cannot be expanded. The top of the expansion end 103 is fixed with a fixing column 104, and a through hole 112 is provided in the column 111. The fixing column 104 is clamped in the through hole 112 to limit the direction of the column 111 in the shell 101, so that the column 111 can only slide up and down in the shell 101. One end of the fixing column 104 is provided with a The threaded groove 105 is fixed in the shell body 101 by threaded rotation. A hanging ring 106 is provided on the top of the shell body 101 and is rotatably connected to the shell body 101. A baffle 109 is rotatably connected to one side of the through groove 107 to prevent mud from entering the shell body 101. A block 108 is symmetrically provided on one side of the baffle 109. The block 108 limits the rotation position of the baffle 109 and has a positioning effect on the fixing claw 113 to reduce the situation where the fixing claw 113 is not aligned with the through groove 107.
[0027] In summary, the working principle of this solution is as follows:
[0028] Rotate the hanging ring 106, align the ground-breaking tip 102 of the anchor sleeve 100 with the rock formation, use a tool to knock the anchor sleeve 100 into the rock formation, then take out the stabilizing member 110, align one end of the stabilizing member 110 with the fixing claw 113 with the fixing column 104 of the shell 101, move the stabilizing member 110, make the fixing claw 113 contact the bottom of the shell 101, rotate the stabilizing member 110, make the fixing claw 113 stuck between the block 108, use the tool to knock the stabilizing member 110 into the shell 101 again, the fixing claw 113 passes through the expansion end 103 at the bottom of the inner cavity of the shell 101, separates and expands, and squeezes and rotates the baffle 109 through the through groove 107, extending from the inside of the shell 101 to the outside of the shell 101, take out the bolt fixed on the fixing column 104 at one end of the expansion end 103, rotate the hanging ring 106, and hang the support member on the hanging ring 106.
[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A hydraulic tunnel prestressed anchoring structure, comprising an anchor sleeve (100) and a stabilizing member (110), characterized in that: The anchor sleeve (100) comprises a shell (101), the shell (101) is hollow, a conical soil-breaking tip (102) is provided at one end of the bottom of the shell (101), through grooves (107) are provided on four sides of the shell (101), and the stabilizing member (110) comprises a column (111) sliding on the shell (101), a fixing claw (113) is provided at one end of the column (111), and the fixing claw (113) passes through the through groove (107) and extends outward from the inside of the shell (101).
2. The hydraulic tunnel prestressed anchoring structure according to claim 1 is characterized in that: An expansion end (103) is fixed at the bottom of the inner cavity of the shell (101), and the fixing claw (113) of the column (111) passes through the expansion end (103) and is expanded to four sides.
3. The hydraulic tunnel prestressed anchoring structure according to claim 2 is characterized in that: A fixing column (104) is fixed on the top of the unfolded end (103), a through hole (112) is provided in the column (111), and the fixing column (104) is snap-fitted into the through hole (112) to limit the column (111) in the direction of the housing (101).
4. The hydraulic tunnel prestressed anchoring structure according to claim 3 is characterized in that: A thread groove (105) is provided at one end of the fixing column (104), and the fixing member (110) is fixed in the shell (101) by means of thread rotation. A hanging ring (106) is provided at the top of the shell (101) and is rotatably connected to the shell (101).
5. The hydraulic tunnel prestressed anchoring structure according to claim 4 is characterized in that: A baffle (109) is rotatably connected to one side of the through groove (107) for preventing soil from entering the housing (101), and a stopper (108) is symmetrically provided on one side of the baffle (109).