Tunnel secondary lining end template capable of resisting blasting vibration influence

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By designing a tunnel two-lined end template including a telescopic mechanism and a telescopic movable form, the problem of the tunnel two-lined end mold easily leaking, blasting or raising the mold under blasting vibration in the prior art is solved, and the problem of the tunnel two-lined end mold is easily solved, and the problem of leakage of slurry, blasting or raising the mold under blasting vibration is realized. Quick installation, strong adaptability and strong vibration resistance end mold reinforcement effect.

CN222457448UActive Publication Date: 2025-02-11CHINA MCC5 GROUP CORP LTD

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Patent Information

Application Number: CN202420284001.2
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-02-06
Publication Date: 2025-02-11
Estimated Expiration: 2034-02-06

AI Technical Summary

Technical Problem

The existing tunnel two-lined end molds are easily affected by blasting vibration during installation and reinforcement, resulting in leakage, explosion or mold expansion, and the reinforcement time is long and labor-consuming.

Method used

A tunnel two-lined end template is designed including a terminal main template assembly, an terminal mold connection plate, a telescopic mechanism and a telescopic movable template. The telescopic mechanism can adjust the position of the telescopic movable formwork, so that it tightens the initial support surface of the tunnel, and the formwork is integrated with the second lining formwork trolley, which can resist blasting vibration.

Benefits of technology

It realizes rapid installation of end molds, saves construction period and labor, can adapt to the initial support shape of any contour, and greatly reduces the risk of blasting, expanding, and slurry leakage under blasting vibration.

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Abstract

The utility model belongs to the technical field of tunnel secondary lining end templates, and particularly relates to a tunnel secondary lining end template capable of resisting blasting vibration influence. According to the technical scheme, the tunnel secondary lining end formwork capable of resisting the blasting vibration influence comprises an end main formwork assembly, a plurality of end formwork connecting plates are fixed to one side of the end main formwork assembly, the end formwork connecting plates are connected with a secondary lining formwork trolley, a plurality of telescopic mechanisms are arranged at the other end of the end main formwork assembly, and the end formwork connecting plates are connected with the secondary lining formwork trolley. The output ends of the telescopic mechanisms are connected with telescopic movable formworks, the side edges of the adjacent telescopic movable formworks are spliced, and the outer sides of the telescopic movable formworks abut against the initial supporting face of the tunnel. The utility model provides the tunnel secondary lining end template which can be quickly mounted, adapts to primary support shapes of any contours and is firm in plugging.

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Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel secondary lining end templates, in particular to a tunnel secondary lining end template capable of resisting the influence of blasting vibration. Background Art

[0002] The installation and reinforcement of the secondary lining end molds in tunnels constructed by the mining method has always been a very difficult problem. The impact of blasting vibration, the unevenness of the initial support, the curved contour of the tunnel, the installation of the buried water stop, and especially the blasting vibration of the tunnels constructed by the mining method, make the secondary lining end very easy to leak, burst or expand the mold. In addition, the reinforcement time is long and labor-intensive and time-consuming.

[0003] Currently, there are two ways to make the secondary lining end formwork for tunnels: one is to use 25×5cm wooden boards cut into different shapes according to the initial support contour, and reinforce them with steel pipes, steel bars and the secondary lining formwork trolley; the other is to use the shaped steel formwork that comes with the secondary lining formwork trolley, plus 5×10cm wooden blocks and geotextile (or foam) to fill the seams to form the end formwork.

[0004] In summary, at present, the selection and reinforcement of tunnel secondary lining end molds have the following problems:

[0005] First, use 25×5cm wooden boards cut into different shapes according to the initial support contour as the end mold, and use steel pipes, steel bars and secondary lining formwork trolleys to form longitudinal steel bars for reinforcement, which will waste a lot of plate materials and a lot of labor.

[0006] Second, since the template cutting cannot completely fit the initial support contour, geotextiles are still needed for caulking. The reinforcement method is mostly welding steel pipes or steel bars with the secondary lining template trolley and the secondary lining longitudinal steel bars for reinforcement. When encountering blasting vibration, it is very easy to cause mold expansion and explosion.

[0007] Third, use the shaped steel mold that comes with the second lining formwork trolley, add 5×10cm wooden squares and geotextile (or foam glue) to form the end mold. Relatively speaking, the operation is relatively simple, but the caulking is prone to leakage and even mold explosion due to the lack of reinforcement measures, especially when affected by blasting vibration. Utility Model Content

[0008] In order to solve the above problems existing in the prior art, the purpose of the utility model is to provide a tunnel secondary lining end template which can be quickly installed, adapt to the initial support shape of any contour and has a reliable sealing.

[0009] The technical solution adopted by the utility model is:

[0010] A tunnel secondary lining end formwork capable of resisting the influence of blasting vibration comprises an end main formwork assembly, a plurality of end formwork connecting plates are fixed on one side of the end main formwork assembly, the end formwork connecting plates are connected to a secondary lining formwork trolley, a plurality of telescopic mechanisms are arranged at the other end of the end main formwork assembly, a telescopic movable formwork is connected to the output end of the telescopic mechanism, the side edges of adjacent telescopic movable formworks are spliced together, and the outer side of the telescopic movable formwork is pressed against the primary support surface of the tunnel.

[0011] The telescopic mechanism of the utility model can adjust the position of the telescopic movable template, so that each telescopic movable template can be pressed against the primary support surface of the tunnel. The utility model is simple to install and operate, and can realize the rapid installation of the end mold, saving construction time and labor. The position of the telescopic movable template can be adjusted arbitrarily, is not affected by the unevenness of the primary support, and can adapt to the shape of the primary support with any contour. The telescopic movable template is connected to the end mold as a whole, and the end mold is integrated with the secondary lining template trolley, which is not affected by blasting vibration, greatly reducing the risk of mold explosion, mold expansion, and slurry leakage.

[0012] As a preferred solution of the utility model, the telescopic mechanism includes a rotating shaft, the rotating shaft is rotatably connected to the end main template assembly, a hand wheel is fixed to the rotating shaft, a gear is installed on the rotating shaft, a rack is provided on the telescopic movable template, and the rack is meshed with the gear. When the hand wheel is rotated, the rotating shaft rotates, and the gear on the rotating shaft drives the rack to move, so that the position of the telescopic movable template is accurately adjusted, so that the telescopic movable template is pressed against the initial support surface.

[0013] As a preferred solution of the utility model, a limiting sleeve is fixed on the end main template assembly, and the rack sleeve is arranged in the limiting sleeve. The limiting sleeve limits the rack to prevent the rack from falling out of the end main template assembly.

[0014] As a preferred solution of the utility model, the number of limit sleeves sleeved on the rack is two, and the two limit sleeves are arranged on both sides of the rotating shaft. The two limit sleeves accurately guide the rack to ensure that the retractable movable template can stably move along a straight line.

[0015] As a preferred solution of the utility model, the end main template assembly includes an inner end main template and an outer end main template, a water stop is arranged between the inner end main template and the outer end main template, the end template connection plate is fixed to the inner end main template, and the telescopic mechanism is arranged on the outer end main template; the inner end main template and the outer end main template are both fixed with movable connecting plates, and the two movable connecting plates are connected by a connecting piece. The inner end main template and the outer end main template are provided with a water stop, and are fixedly connected by a movable connecting plate.

[0016] As a preferred solution of the utility model, waterstop splints are fixed on the inner end main template and the outer end main template, and the two waterstop splints clamp the waterstop. The two waterstop splints clamp the waterstop to ensure that the waterstop is stable and firm.

[0017] As a preferred solution of the utility model, ribs are fixed between the inner end main template and the waterstop splint, and between the outer end main template and the waterstop splint.

[0018] As a preferred solution of the utility model, a reinforcement ring is fixed on the water stop splint, a steel pipe is passed through the reinforcement ring, one end of the steel pipe is pressed against the primary support surface of the tunnel, and the other end of the steel pipe is fixed to the secondary lining formwork trolley. The secondary lining formwork trolley is connected through the reinforcement ring and pressed against the primary support surface to achieve reinforcement of the entire end mold.

[0019] As a preferred solution of the utility model, the reinforcement rings on the two water stop splints are arranged opposite to each other. When the two reinforcement rings are arranged opposite to each other, the steel pipe can pass through the two reinforcement rings, so that the inner end main template and the water stop splint are further reliably connected.

[0020] As a preferred solution of the utility model, the end mold connecting plate and the second lining mold trolley are connected by a support rod.

[0021] The beneficial effects of the utility model are:

[0022] 1. The telescopic mechanism of the utility model can adjust the position of the telescopic movable template, so that each telescopic movable template can be pressed against the initial support surface of the tunnel. The installation operation of the utility model is simple, and the end mold can be quickly installed, saving construction time and labor.

[0023] 2. The position of the retractable movable template can be adjusted arbitrarily, is not affected by the unevenness of the initial support, and can adapt to the initial support shape of any contour.

[0024] 3. The retractable movable formwork is connected to the end formwork as a whole, and the end formwork is integrated with the secondary lining formwork trolley, which is not affected by blasting vibration, greatly reducing the risk of mold explosion, mold expansion and slurry leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0027] Figure 3 It is an assembly drawing of the utility model and the secondary lining template trolley;

[0028] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle.

[0029] In the figure: 1-end main template assembly; 2-end template connecting plate; 3-second lining template trolley; 4-telescopic mechanism; 5-telescopic movable template; 6-support rod; 11-inner end main template; 12-outer end main template; 13-movable connecting plate; 14-waterstop splint; 15-rib plate; 16-reinforcement ring; 41-rotating shaft; 42-handwheel; 43-gear; 44-rack; 45-limiting sleeve. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0032] like Figure 1 to Figure 4 As shown, the tunnel secondary lining end formwork of this embodiment which can resist the influence of blasting vibration comprises an end main formwork assembly 1, a plurality of end formwork connecting plates 2 are fixed to one side of the end main formwork assembly 1, the end formwork connecting plates 2 are connected to the secondary lining formwork trolley 3 through a support rod 6, a plurality of telescopic mechanisms 4 are arranged at the other end of the end main formwork assembly 1, a telescopic movable formwork 5 is connected to the output end of the telescopic mechanism 4, the side edges of adjacent telescopic movable formworks 5 are spliced together, and the outer side of the telescopic movable formwork 5 is pressed tightly against the initial support surface of the tunnel.

[0033] Specifically, the telescopic mechanism 4 includes a rotating shaft 41, which is rotatably connected to the end main template assembly 1, a hand wheel 42 is fixed to the rotating shaft 41, a gear 43 is installed on the rotating shaft 41, and a rack 44 is provided on the telescopic movable template 5, and the rack 44 is meshed with the gear 43. When the hand wheel 42 is rotated, the rotating shaft 41 rotates, and the gear 43 on the rotating shaft 41 drives the rack 44 to move, so that the position of the telescopic movable template 5 is accurately adjusted, so that the telescopic movable template 5 is pressed against the initial support surface.

[0034] A limiting sleeve 45 is fixed on the end main template assembly 1, and the rack 44 is sleeved in the limiting sleeve 45. The limiting sleeve 45 limits the rack 44 to prevent the rack 44 from coming out of the end main template assembly 1.

[0035] The number of the limiting sleeves 45 sleeved on the rack 44 is two, and the two limiting sleeves 45 are respectively arranged on both sides of the rotating shaft 41. The two limiting sleeves 45 accurately guide the rack 44 to ensure that the telescopic movable template 5 can stably move along a straight line.

[0036] Specifically, the end main template assembly 1 includes an inner end main template 11 and an outer end main template 12, a water stop is arranged between the inner end main template 11 and the outer end main template 12, the end template connection plate 2 is fixed to the inner end main template 11, and the telescopic mechanism 4 is arranged on the outer end main template 12; the inner end main template 11 and the outer end main template 12 are both fixed with an active connection plate 13, and the two active connection plates 13 are connected by bolts. The inner end main template 11 and the outer end main template 12 are provided with a water stop, and are fixedly connected by the active connection plate 13.

[0037] The inner end main template 11 and the outer end main template 12 are both fixed with water stop splints 14, and the two water stop splints 14 clamp the water stop. The two water stop splints 14 clamp the water stop to ensure that the water stop is stable and firm.

[0038] Ribs 15 are fixed between the inner end main template 11 and the water stop strip clamp 14 , and between the outer end main template 12 and the water stop strip clamp 14 .

[0039] A reinforcement ring 16 is fixed on the water stop clamp 14, and a steel pipe is passed through the reinforcement ring 16. One end of the steel pipe is pressed against the primary support surface of the tunnel, and the other end of the steel pipe is fixed to the secondary lining formwork trolley 3. The secondary lining formwork trolley 3 is connected through the reinforcement ring 16 and pressed against the primary support surface, so as to realize the reinforcement of the entire end mold.

[0040] Among them, the reinforcement rings 16 on the two water stop splints 14 are arranged opposite to each other. When the two reinforcement rings 16 are arranged opposite to each other, the steel pipe can pass through the two reinforcement rings 16, so that the inner end main template 11 and the water stop splint 14 are further reliably connected.

[0041] The telescopic mechanism 4 of the utility model can adjust the position of the telescopic movable template 5, so that each telescopic movable template 5 can be pressed against the initial support surface of the tunnel. The installation operation of the utility model is simple, and the end mold can be quickly installed, saving construction time and labor. The position of the telescopic movable template 5 can be adjusted arbitrarily, is not affected by the unevenness of the initial support, and can adapt to the initial support shape of any contour. The telescopic movable template 5 is connected to the end mold as a whole, and the end mold is integrated with the second lining template trolley 3, which is not affected by blasting vibration, greatly reducing the risk of mold explosion, mold expansion, and slurry leakage.

[0042] Installation process:

[0043] S1: Use a pin at the end mold connecting plate 2 to connect the end mold and the second lining mold trolley 3 through the support rod 6 (only install once, and subsequent construction does not need to be repeatedly disassembled and installed).

[0044] S2: Connect the inner end main template 11 and the outer end main template 12 through the movable connecting plate 13; install the waterstop along the waterstop splint 14, and close the inner end main template 11 and the outer end main template 12 after each installation to ensure the stability and firmness of the waterstop.

[0045] S3: Rotate the hand wheel 42 to make the gear 43 drive the rack 44 to move, and the retractable movable template 5 is retracted forward and backward to press against the initial support surface.

[0046] S4: Use a common steel pipe to pass through the reinforcement ring 16, one end of the steel pipe is pressed against the primary support surface, and the other end of the steel pipe is fixed to the fixing clamp ring on the second lining template trolley 3, thus completing the installation and reinforcement of the entire end mold.

[0047] The present utility model is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A tunnel secondary lining end formwork capable of resisting the influence of blasting vibration, characterized in that: The invention comprises an end main template assembly (1), a plurality of end template connection plates (2) are fixed on one side of the end main template assembly (1), the end template connection plates (2) are connected to a secondary lining template trolley (3), a plurality of telescopic mechanisms (4) are arranged on the other end of the end main template assembly (1), the output end of the telescopic mechanism (4) is connected to a telescopic movable template (5), the side edges of adjacent telescopic movable templates (5) are spliced together, and the outer side of the telescopic movable template (5) is pressed against the primary support surface of the tunnel.

2. The tunnel secondary lining end formwork capable of resisting the influence of blasting vibration according to claim 1 is characterized in that: The telescopic mechanism (4) comprises a rotating shaft (41), the rotating shaft (41) is rotatably connected to the end main template assembly (1), a hand wheel (42) is fixed on the rotating shaft (41), a gear (43) is installed on the rotating shaft (41), and a rack (44) is arranged on the telescopic movable template (5), and the rack (44) is meshed with the gear (43).

3. The tunnel secondary lining end formwork capable of resisting the influence of blasting vibration according to claim 2 is characterized in that: A limiting sleeve (45) is fixed on the end main template assembly (1), and the rack (44) is sleeved in the limiting sleeve (45).

4. The tunnel secondary lining end formwork capable of resisting the influence of blasting vibration according to claim 3 is characterized in that: The number of the limiting sleeves (45) sleeved on the rack (44) is two, and the two limiting sleeves (45) are respectively arranged on both sides of the rotating shaft (41).

5. The tunnel secondary lining end formwork capable of resisting the influence of blasting vibration according to claim 1 is characterized in that: The end main template assembly (1) comprises an inner end main template (11) and an outer end main template (12), a water stop is arranged between the inner end main template (11) and the outer end main template (12), an end template connecting plate (2) is fixed to the inner end main template (11), and a telescopic mechanism (4) is arranged on the outer end main template (12); movable connecting plates (13) are fixed to the inner end main template (11) and the outer end main template (12), and the two movable connecting plates (13) are connected by a connecting piece.

6. The tunnel secondary lining end formwork capable of resisting the influence of blasting vibration according to claim 5 is characterized in that: Waterstop splints (14) are fixed on the inner end main template (11) and the outer end main template (12), and the two waterstop splints (14) clamp the waterstop.

7. The tunnel secondary lining end formwork capable of resisting the influence of blasting vibration according to claim 6 is characterized in that: Ribs (15) are fixed between the inner end main template (11) and the water stop strip clamp (14), and between the outer end main template (12) and the water stop strip clamp (14).

8. The tunnel secondary lining end formwork capable of resisting the influence of blasting vibration according to claim 7 is characterized in that: A reinforcement ring (16) is fixed on the water stop clamp (14), a steel pipe is passed through the reinforcement ring (16), one end of the steel pipe is pressed against the primary support surface of the tunnel, and the other end of the steel pipe is fixed to the secondary lining formwork trolley (3).

9. The tunnel secondary lining end formwork capable of resisting the influence of blasting vibration according to claim 8 is characterized in that: The reinforcement rings (16) on the two water stop strip clamps (14) are arranged opposite to each other.

10. A tunnel secondary lining end formwork capable of withstanding blasting vibration according to any one of claims 1 to 9, characterized in that: The end mold connecting plate (2) and the second lining mold trolley (3) are connected via a support rod (6).