A bottom plate pressing and forming construction technology for tunnel anchor main cable passage section with large inclination angle

Abstract

The present invention discloses a bottom plate press-molding construction process for a tunnel anchor main cable passage section at a large inclination angle, which relates to the technical field of tunnel construction and includes the following operating steps: S1, installation of a counter-pressure bracket; S2, installation of a formwork; S3, pouring of concrete in the first formwork; S4, removal of the first formwork; S5, movement of the formwork to the second formwork position; S6, installation and pouring of the second formwork; S7, repeated sliding and construction cycles. The bottom plate press-molding construction process for a tunnel anchor main cable passage section at a large inclination angle adopts a tie-rod-free press-molding design and utilizes an initial support arch frame to design a bottom plate press-molding bracket to meet the formwork support requirements and solve the problem of the traditional tie-rod system damaging the waterproof layer under large inclination angles. At the same time, the press-molding system is provided with an adjusting screw to ensure accurate positioning of the formwork and the quality of the concrete. The overall sliding scheme of the formwork is used to ensure continuous operation of concrete construction in a limited space and save construction time.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to a bottom plate press-molding construction process for a tunnel anchor large-angle main cable passing section. Background Art

[0002] The construction of the bottom plate formwork for the tunnel anchor main cable passage section at a large inclination angle is a complex and delicate project that needs to be carried out strictly in accordance with the process steps. However, the existing traditional tie rod system at large inclinations can easily damage the waterproof layer, and it is difficult to accurately position the formwork, making it difficult to ensure the quality of the concrete.

[0003] Therefore, in view of this, the existing structure and defects were studied and improved, and a bottom plate press-molding construction process for the tunnel anchor large-angle main cable passing section was proposed. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the present invention provides a bottom plate press-molding construction process for a tunnel anchor main cable passage section with a large inclination angle, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A tunnel anchor large-angle main cable through section bottom plate press molding construction process, comprising the following steps:

[0006] S1. Installation of counter-pressure bracket:

[0007] According to the construction design drawings, the counter-pressure support is installed at the template support position. The surface of the counter-pressure support is provided with a self-checking structure, which can self-check the elevation and levelness behind the counter-pressure support.

[0008] S2. Template installation:

[0009] The standardized steel formwork is hoisted to the construction site in modules. The formwork is assembled from one end to the other in the order of formwork assembly. The formwork is connected with a quick locking mechanism to ensure that the assembly seams are tight and without gaps. The height, position and inclination of the formwork are precisely adjusted using an adjustable screw.

[0010] S3, first form concrete pouring:

[0011] Mix concrete according to the designed mix ratio, and pour concrete in layers and sections from one end to the other. After pouring, cover and maintain the concrete to prevent early water loss.

[0012] S4. Removal of the first mold template:

[0013] After the concrete strength of the first formwork reaches the design requirements, start to remove the two side wall formworks, adjust the screw to the minimum value, release the locking structure of the formwork, and use the lifting equipment to lift the formwork as a whole off the concrete surface;

[0014] S5. The template moves to the second mold position:

[0015] Install the sliding pad beam on the sliding path, ensure that the pad beam is flat and stable, adjust the position of the sliding pad beam so that it is parallel to the sliding direction of the template, lower the template onto the sliding pad beam, and use the winch outside the tunnel to slide the template along the sliding pad beam to the second mold position;

[0016] S6. Installation and pouring of the second mold formwork:

[0017] Use hoisting equipment to lift the slipped formwork to the specified elevation, adjust the screw, align the formwork with the second mold position, ensure that the contact surface between the formwork and the concrete fits seamlessly, use the adjustable screw to gradually adjust the horizontal, vertical and tilt angles of the formwork to ensure that they are consistent with the design requirements, and simultaneously remove the bracket of the first mold and install it at the second mold position;

[0018] According to the first mold pouring method, pour concrete gradually from one end of the formwork. After pouring, smooth the concrete surface and cover it with water for curing.

[0019] S7, repeat the sliding and construction cycle:

[0020] After the second formwork concrete meets the standards, the formwork is removed according to the first formwork removal process, and then the sliding pad beam is installed, and the formwork is slid to the third formwork position. According to the above process of formwork installation, concrete pouring, formwork removal and sliding, the construction of subsequent formworks is completed in sequence.

[0021] Furthermore, in step S1, before the counter-pressure support is installed, a conspicuous elevation line needs to be set inside the tunnel by spraying.

[0022] Furthermore, in step S2, repeated inspections are performed using a total station and a laser rangefinder to ensure that the template is completely consistent with the designed position, and after the adjustment is completed, the screw rod is fixed to prevent the template from moving during the construction process.

[0023] Furthermore, in step S3, during the concrete pouring process, a vibrating rod is used to fully vibrate the concrete to ensure density and avoid bubbles and honeycomb defects.

[0024] Furthermore, in step S4, after the formwork is separated from the concrete surface, the surface of the removed formwork is checked for adhesion of concrete, the formwork is cleaned and re-applied with a release agent, and the formwork connection parts and support system are checked for damage, and repaired or replaced in a timely manner.

[0025] Furthermore, in step S5, during the template sliding process, the template is manually checked at any time using an instrument to prevent tilting or blocking.

[0026] A tunnel anchor high-angle main cable passing section bottom plate die-casting construction process, wherein the counter-pressure bracket used includes a bracket body, a self-inspection structure is provided in the middle of the surface of the bracket body, and the self-inspection structure includes a track frame, a servo motor, a transmission screw, a movable sleeve, a one-way damping rotating shaft, a gear and a camera, a servo motor is fixed to the end of the track frame, and the output end of the servo motor is connected to the transmission screw, the outer wall of the transmission screw is provided with a movable sleeve, and the surface of the movable sleeve is rotatably connected to the one-way damping rotating shaft, the outer wall of the one-way damping rotating shaft is fixed with a gear, and the top of the one-way damping rotating shaft is fixed with a camera.

[0027] Furthermore, the transmission screw is located inside the track frame, and the movable sleeve is slidably connected to the track frame.

[0028] Furthermore, the self-inspection structure also includes a level, and the level is provided on the top of the camera.

[0029] Furthermore, the self-checking structure also includes a one-way torsion spring shaft and an engaging single tooth. The outer side surface of one end of the track frame away from the servo motor is rotatably connected to the one-way torsion spring shaft, and the outer wall of the one-way torsion spring shaft is fixed with an engaging single tooth.

[0030] The present invention provides a bottom plate press-molding construction process for a tunnel anchor main cable passage section with a large inclination angle, which has the following beneficial effects:

[0031] 1. The floor press-form construction process for the steeply inclined main cable passage section of this tunnel anchor adopts a tie-rod-free press-form design and utilizes the initial support arch to design the floor press-form bracket. This meets the formwork support requirements and solves the problem of traditional tie-rod systems damaging the waterproof layer at steep angles. Furthermore, the press-form system is equipped with an adjustment screw to ensure precise formwork positioning and concrete quality. The use of an integral formwork sliding solution ensures continuous concrete construction in a confined space, thus reducing construction time.

[0032] 2. This tunnel anchor uses a high-angle main cable through-section bottom plate die-casting construction process. During the sliding motion of the movable sleeve, the camera faces the tunnel side to capture video footage of the mounting area at one end of the bracket body. This video footage is transmitted remotely, allowing inspection personnel to monitor the bracket body's installation status. During the camera's movement, a level meter monitors the levelness of various parts of the bracket body in real time and transmits this information.

[0033] 3. This tunnel anchor's high-angle main cable passes through the bottom plate die-casting process. When the servo motor drives the drive screw in reverse, causing the movable sleeve to move toward the servo motor's position, the meshing single tooth is stressed, but the shaft is held in place by the one-way torsion spring. The gear, meshing with the meshing single tooth, generates thrust, which rotates the one-way damping shaft. This causes the camera to rotate 180 degrees, directing its image toward the other side of the tunnel. As the camera returns to its original position, it captures and provides feedback on the installation status of the other end of the bracket body. This eliminates the need for inspectors to carry a large number of instruments for inspection, significantly reducing their workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the overall process structure of a bottom plate press molding construction process for a tunnel anchor with a large inclination angle main cable passing section according to the present invention;

[0035] Figure 2 It is a schematic diagram of the track frame structure of the present invention;

[0036] Figure 3 Schematic diagram of the transmission screw structure of the present invention;

[0037] Figure 4 Schematic diagram of the gear structure of the present invention;

[0038] Figure 5 It is a schematic diagram of the gear and meshing single tooth transmission structure of the present invention.

[0039] In the figure: 1. bracket body; 2. self-test structure; 201. track frame; 202. servo motor; 203. transmission screw; 204. movable sleeve; 205. one-way damping shaft; 206. gear; 207. camera; 208. level; 209. one-way torsion spring shaft; 210. meshing single tooth. DETAILED DESCRIPTION

[0040] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0041] like Figure 1 As shown, the present invention provides a technical solution: a tunnel anchor large-angle main cable through the bottom plate mold construction process, including the following steps:

[0042] S1. Installation of counter-pressure bracket:

[0043] According to the construction design drawings, the counter-pressure support is installed at the template support position. The surface of the counter-pressure support is equipped with a self-checking structure, which can self-check the elevation and levelness of the counter-pressure support. Before the counter-pressure support is installed, the conspicuous elevation line and installation point need to be set inside the tunnel by spraying.

[0044] S2. Template installation:

[0045] The standardized steel formwork is hoisted to the construction site in modules. The formwork is assembled from one end to the other in the order of formwork assembly. The formwork is connected with a quick locking mechanism to ensure that the assembly seams are tight and seamless. The formwork is precisely adjusted in height, position, and inclination using an adjustable screw. Repeated inspections are performed using a total station and laser rangefinder to ensure that the formwork is in perfect alignment with the designed position. After the adjustment is completed, the screw is fixed to prevent the formwork from moving during construction.

[0046] S3, first form concrete pouring:

[0047] Mix concrete according to the designed mix ratio and pour concrete in layers and sections from one end to the other. After pouring, cover and maintain the concrete to prevent early water loss. During the concrete pouring process, use a vibrator to fully vibrate the concrete to ensure density and avoid bubbles and honeycomb defects.

[0048] S4. Removal of the first mold template:

[0049] After the concrete strength of the first formwork reaches the design requirements, start to remove the two side wall formworks. Adjust the screw to the minimum value, release the locking structure of the formwork, and use the lifting equipment to lift the formwork as a whole off the concrete surface. After the formwork is off the concrete surface, check whether there is any concrete adhering to the removed formwork surface. Clean the formwork and reapply the release agent. Check whether the formwork connection parts and support system are damaged, and repair or replace them in time.

[0050] S5. The template moves to the second mold position:

[0051] Install the sliding pad beam on the sliding path, ensure that the pad beam is flat and stable, adjust the position of the sliding pad beam so that it is parallel to the sliding direction of the template, lower the template onto the sliding pad beam, and use the hoist outside the tunnel to slide the template along the sliding pad beam to the second mold position. During the template sliding process, manually use instruments to check the stability of the template at any time to prevent tilting or blocking;

[0052] S6. Installation and pouring of the second mold formwork:

[0053] Use hoisting equipment to lift the slipped formwork to the specified elevation, adjust the screw, align the formwork with the second mold position, ensure that the contact surface between the formwork and the concrete fits seamlessly, use the adjustable screw to gradually adjust the horizontal, vertical and tilt angles of the formwork to ensure that they are consistent with the design requirements, and simultaneously remove the bracket of the first mold and install it at the second mold position;

[0054] According to the first mold pouring method, pour concrete gradually from one end of the formwork. After pouring, smooth the concrete surface and cover it with water for curing.

[0055] S7, repeat the sliding and construction cycle:

[0056] After the second formwork concrete reaches the standard, the formwork is removed according to the first formwork removal process, and then the sliding pad beam is installed. The formwork is slid to the third formwork position. According to the above process of formwork installation, concrete pouring, formwork removal and sliding, the construction of subsequent forms is completed in sequence;

[0057] Based on the above description, the present invention adopts a tie-rod-free die-casting design and utilizes the initial support arch frame to design the bottom plate die-casting bracket to meet the formwork support requirements and solve the problem of traditional tie-rod system damaging the waterproof layer under large inclination angles. At the same time, the die-casting system is provided with an adjusting screw to ensure the precise positioning of the formwork and the quality of the concrete. The overall sliding scheme of the formwork is used to ensure continuous operation of concrete construction in limited spaces and save construction time.

[0058] like Figure 2-Figure 5 As shown, a tunnel anchor large-angle main cable through section bottom plate press molding construction process, wherein the counter-pressure bracket used includes a bracket body 1, a self-inspection structure 2 is provided in the middle of the surface of the bracket body 1, and the self-inspection structure 2 includes a track frame 201, a servo motor 202, a transmission screw 203, a movable sleeve 204, a one-way damping shaft 205, a gear 206 and a camera 207, a servo motor 202 is fixed to the end of the track frame 201, and the output end of the servo motor 202 is connected to the transmission screw 203, the outer wall of the transmission screw 203 is provided with a movable sleeve 204, and the surface of the movable sleeve 204 is rotatably connected to the one-way damping shaft. A one-way damping shaft 205 is provided, a gear 206 is fixed to the outer wall of the one-way damping shaft 205, and a camera 207 is fixed to the top of the one-way damping shaft 205. The transmission screw 203 is located inside the track frame 201, and the movable sleeve 204 is slidably connected to the track frame 201. The self-inspection structure 2 also includes a spirit level 208. A spirit level 208 is provided on the top of the camera 207. The self-inspection structure 2 also includes a one-way torsion spring shaft 209 and an engaging single tooth 210. The outer side surface of one end of the track frame 201 away from the servo motor 202 is rotatably connected to the one-way torsion spring shaft 209, and the outer wall of the one-way torsion spring shaft 209 is fixed with an engaging single tooth 210.

[0059] The specific operation is as follows: when the back-pressure bracket is installed, the elevation line and installation points pre-set inside the tunnel are used to accurately install the bracket body 1 to the specified position. After installation, the servo motor 202 drives the transmission screw 203 to rotate so that the movable sleeve 204 slides along the inside of the track frame 201. During the sliding process of the movable sleeve 204, the camera 207 faces one side of the tunnel to collect a video image of the installation position of one end of the bracket body 1. The video image is remotely transmitted so that the inspection personnel can remotely know the installation status of the bracket body 1. During the movement of the camera 207, the level meter 208 detects the horizontal status of each part of the bracket body 1 in real time and also transmits it;

[0060] When the camera 207 slides to the end of the track frame 201 away from the servo motor 202, the gear 206 comes into contact with the meshing single tooth 210. Under the action of movement, the gear 206 does not rotate due to the one-way damping shaft 205, while the meshing single tooth 210 rotates under the action of the one-way torsion spring shaft 209, so that the gear 206 carries the camera 207 through the area where the meshing single tooth 210 is located.

[0061] When the servo motor 202 drives the transmission screw 203 to rotate in the opposite direction so that the movable sleeve 204 moves toward the position of the servo motor 202, the meshing single tooth 210 is subjected to force but does not rotate through the one-way torsion spring shaft 209, and the gear 206 generates thrust due to engagement with the meshing single tooth 210 to rotate through the one-way damping shaft 205, thereby carrying the camera 207 to rotate. When the camera 207 passes through the area where the meshing single tooth 210 is located and moves toward the position of the servo motor 202, the camera 207 rotates 180 degrees so that its shooting direction is toward the other side of the tunnel. Therefore, during the return movement of the camera 207, the installation status of the other end of the bracket body 1 is photographed and feedback is given, thereby eliminating the need for inspectors to carry a large number of instruments for inspection, which is beneficial to greatly reduce the inspection workload of inspectors.

[0062] In summary, when using the bottom plate press-molding construction process for the tunnel anchor high-angle main cable through section, first install the counter-pressure bracket at the template support position according to the construction design drawings;

[0063] The standardized steel formwork is hoisted to the construction site in modules, and the formwork is assembled from one end to the other in sequence according to the formwork assembly order. The formwork is connected with a quick locking mechanism to ensure that the assembly seams are tight and seamless, and the height, position and inclination of the formwork are precisely adjusted using an adjustable screw. Concrete is mixed according to the designed mix ratio, and concrete is poured in layers and sections from one end to the other. After pouring, it is covered and cured to prevent early water loss of the concrete. During the concrete pouring process, the concrete is fully vibrated with a vibrator to ensure density and avoid bubbles and honeycomb defects. After the concrete strength of the first formwork reaches the design requirements, the two side wall formworks are removed, the screw is adjusted to the minimum value, the locking structure of the formwork is released, and the hoisting equipment is used to lift the entire formwork off the concrete surface. The sliding pad beam is installed on the sliding path to ensure that the pad beam is flat and stable, and the position of the sliding pad beam is adjusted so that it is parallel to the sliding direction of the formwork. The formwork is lowered onto the sliding pad beam, and the formwork is slid to the second formwork position along the sliding pad beam using an external winch.

[0064] The sliding formwork is lifted to the specified elevation using a hoisting device. The screw is adjusted to align the formwork with the second formwork position, ensuring that the contact surface between the formwork and the concrete fits seamlessly. The horizontal, vertical, and tilt angles of the formwork are gradually adjusted using the adjustable screw to ensure that they are consistent with the design requirements. The bracket of the first formwork is simultaneously removed and installed in the second formwork position. Concrete is gradually poured from one end of the formwork according to the first formwork pouring method. After pouring, the concrete surface is smoothed and covered with water for curing. After the second formwork concrete meets the standards, the formwork is removed according to the first formwork removal process, and the sliding pad beam is installed. The formwork is slid to the third formwork position. The construction of subsequent forms is completed in sequence according to the above process of formwork installation, concrete pouring, formwork removal, and sliding.

[0065] When the counter-pressure support is installed, the elevation line and installation points pre-set inside the tunnel are used to accurately install the support body 1 to the specified position. After installation, the servo motor 202 drives the transmission screw 203 to rotate so that the movable sleeve 204 slides along the inside of the track frame 201. During the sliding process of the movable sleeve 204, the camera 207 faces one side of the tunnel to collect video images of the installation position of one end of the support body 1. The video images are remotely transmitted so that the inspection personnel can remotely know the installation status of the support body 1. During the movement of the camera 207, the level meter 208 detects the horizontal conditions of various parts of the support body 1 in real time and also transmits them.

[0066] When the camera 207 slides to the end of the track frame 201 away from the servo motor 202, the gear 206 comes into contact with the meshing single tooth 210. Under the action of movement, the gear 206 does not rotate due to the one-way damping shaft 205, while the meshing single tooth 210 rotates under the action of the one-way torsion spring shaft 209, so that the gear 206 carries the camera 207 through the area where the meshing single tooth 210 is located.

[0067] When the servo motor 202 drives the transmission screw 203 to rotate in the opposite direction so that the movable sleeve 204 moves toward the position of the servo motor 202, the meshing single tooth 210 is subjected to force but does not rotate through the one-way torsion spring shaft 209, and the gear 206 generates thrust due to engagement with the meshing single tooth 210 to rotate through the one-way damping shaft 205, thereby carrying the camera 207 to rotate. When the camera 207 passes through the area where the meshing single tooth 210 is located and moves toward the position of the servo motor 202, the camera 207 rotates 180 degrees so that its shooting direction is toward the other side of the tunnel, thereby photographing and feeding back the installation status of the other end of the bracket body 1 during the return movement of the camera 207.

[0068] The embodiments of the present invention are presented for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described in order to better illustrate the principles of the invention and its practical application and to enable those skilled in the art to understand the invention and design various embodiments with various modifications as suited for specific applications.

Claims

1. A process for forming the bottom plate of a tunnel anchor with a large inclination angle and a main cable through section, characterized by: The following steps are included: S1. Installation of counter-pressure bracket: According to the construction design drawings, the counter-pressure support is installed at the template support position. The surface of the counter-pressure support is provided with a self-checking structure, which can self-check the elevation and levelness behind the counter-pressure support. S2. Template installation: The standardized steel formwork is hoisted to the construction site in modules. The formwork is assembled from one end to the other in the order of formwork assembly. The formwork is connected with a quick locking mechanism to ensure that the assembly seams are tight and without gaps. The height, position and inclination of the formwork are precisely adjusted using an adjustable screw. S3, first form concrete pouring: Mix concrete according to the designed mix ratio, and pour concrete in layers and sections from one end to the other. After pouring, cover and maintain the concrete to prevent early water loss. S4. Removal of the first mold template: After the concrete strength of the first formwork reaches the design requirements, start to remove the two side wall formworks, adjust the screw to the minimum value, release the locking structure of the formwork, and use the lifting equipment to lift the formwork as a whole off the concrete surface; S5. The template moves to the second mold position: Install the sliding pad beam on the sliding path, ensure that the pad beam is flat and stable, adjust the position of the sliding pad beam so that it is parallel to the sliding direction of the template, lower the template onto the sliding pad beam, and use the winch outside the tunnel to slide the template along the sliding pad beam to the second mold position; S6. Installation and pouring of the second mold formwork: Use hoisting equipment to lift the slipped formwork to the specified elevation, adjust the screw, align the formwork with the second mold position, ensure that the contact surface between the formwork and the concrete fits seamlessly, use the adjustable screw to gradually adjust the horizontal, vertical and tilt angles of the formwork to ensure that they are consistent with the design requirements, and simultaneously remove the bracket of the first mold and install it at the second mold position; Pour concrete gradually from one end of the formwork according to the first form pouring method. After pouring, smooth the concrete surface and cover it with water for curing. S7, repeat the sliding and construction cycle: After the second formwork concrete reaches the standard, the formwork is removed according to the first formwork removal process, and then the sliding pad beam is installed. The formwork is slid to the third formwork position. According to the above process of formwork installation, concrete pouring, formwork removal and sliding, the construction of subsequent forms is completed in sequence; The back-pressure bracket used therein comprises a bracket body (1), a self-checking structure (2) is provided on the middle portion of the surface of the bracket body (1), and the self-checking structure (2) comprises a track frame (201), a servo motor (202), a transmission screw (203), a movable sleeve (204), a one-way damping rotating shaft (205), a gear (206) and a camera (207), the end of the track frame (201) is fixed with the servo motor (202), and the output end of the servo motor (202) is connected with the transmission screw (203), the outer wall of the transmission screw (203) is provided with the movable sleeve (204), and the surface of the movable sleeve (204) is rotatably connected with the one-way damping rotating shaft (205), the outer wall of the one-way damping rotating shaft (205) is fixed with a gear (206), and the top of the one-way damping rotating shaft (205) is fixed with a camera (207).

2. The bottom plate press molding construction process for the tunnel anchor high-angle main cable passage section according to claim 1 is characterized by: In step S1, before the counter-pressure support is installed, a conspicuous elevation line needs to be set inside the tunnel by spraying.

3. The bottom plate press molding construction process for the tunnel anchor high-angle main cable passage section according to claim 1 is characterized by: In step S2, the template is repeatedly checked with a total station and a laser rangefinder to ensure that the template is completely consistent with the designed position. After the adjustment is completed, the screw rod is fixed to prevent the template from moving during the construction process.

4. The bottom plate press molding construction process for the tunnel anchor high-angle main cable passage section according to claim 1 is characterized by: In step S3, during the concrete pouring process, a vibrating rod is used to fully vibrate the concrete to ensure density and avoid bubbles and honeycomb defects.

5. The bottom plate press molding construction process for the tunnel anchor high-angle main cable passage section according to claim 1 is characterized by: In step S4, after the formwork is separated from the concrete surface, the removed formwork surface is checked for adhesion of concrete, the formwork is cleaned and re-applied with release agent, and the formwork connection parts and support system are checked for damage, and repaired or replaced in a timely manner.

6. The bottom plate press molding construction process for the tunnel anchor high-angle main cable passage section according to claim 1 is characterized by: In step S5, during the template sliding process, the template is manually checked at any time using an instrument to prevent tilting or blocking.

7. The bottom plate press molding construction process for the tunnel anchor high-angle main cable passage section according to claim 1 is characterized by: The transmission screw (203) is located inside the track frame (201), and the movable sleeve (204) is slidably connected to the track frame (201).

8. The bottom plate press molding construction process for the tunnel anchor high-angle main cable passage section according to claim 1 is characterized by: The self-inspection structure (2) further includes a level (208), and the level (208) is provided on the top of the camera (207).

9. The bottom plate press molding construction process for the tunnel anchor high-angle main cable passage section according to claim 1 is characterized by: The self-checking structure (2) further comprises a one-way torsion spring shaft (209) and an engaging single tooth (210); the outer side surface of one end of the track frame (201) away from the servo motor (202) is rotatably connected to the one-way torsion spring shaft (209), and the outer wall of the one-way torsion spring shaft (209) is fixed with the engaging single tooth (210).

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