Water stopping and reinforcing structure of bored tunnel with large-span section

Abstract

The utility model relates to the technical field of underground excavation tunnel water stopping and reinforcing structures, and discloses a large-span section underground excavation tunnel water stopping and reinforcing structure which comprises a first arch-shaped supporting frame, and a supporting and wrapping assembly is arranged on the side wall, close to the side of an underground excavation tunnel, of the first arch-shaped supporting frame. The supporting and wrapping assembly comprises a top arch plate, a side bent plate and a vertical supporting plate, wherein the side bent plate and the vertical supporting plate are symmetrically arranged on the two sides of the top arch plate, and the top arch plate, the side bent plate and the vertical supporting plate are spliced to form a shape matched with the first arch supporting frame so that the side wall, close to the side of the subsurface tunnel, of the first arch supporting frame can be covered. Symmetrically-arranged supporting foot columns are arranged below the first arch-shaped supporting frame, adjusting supporting columns movably penetrate through the supporting foot columns on the two sides, and the tops of the adjusting supporting columns on the two sides extend outwards from the tops of the supporting foot columns on the corresponding sides and then are connected with the bottom ends of the corresponding sides of the first arch-shaped supporting frame; adjusting assemblies are arranged on the supporting foot columns on the two sides. The device has the advantages that the construction time is shortened, and the applicability is good.

Description

Technical Field

[0001] The utility model relates to a dark-digging tunnel water-stopping reinforcement structure with a large span section, belonging to the technical field of dark-digging tunnel water-stopping reinforcement structures. Background Art

[0002] A large-span tunnel is a type of tunnel that is constructed underground and has a large tunnel section width. This type of tunnel usually requires consideration of geological conditions, support, waterproofing and reinforcement measures during the design and construction process to ensure the safety and durability of the structure.

[0003] In the prior art, there is a utility model patent with a Chinese patent authorization announcement number of CN217462171U, which discloses a waterproof reinforcement structure for a large-span tunnel, including a tunnel for segmented construction, each segment of which is divided into an upper tunnel constructed first and a lower tunnel constructed later, the waterproof reinforcement structure including an advance reinforcement layer located above the arch of the upper tunnel, a pipe-roof support structure built along the excavation contour line of the arch of the upper tunnel, and a contour waterproof wall located below the invert of the lower tunnel, the advance reinforcement layer is an arc-shaped reinforcement structure formed by advance grouting of the stratum of the arch of the upper tunnel, the contour waterproof wall is a U-shaped waterproof reinforcement structure formed by deep hole grouting from the bottom surface of the upper tunnel along the contour line of the invert of the lower tunnel, and the contour waterproof wall and the advance reinforcement layer are connected as a whole in the cross section to form a reinforcement structure enclosing the tunnel. When in use, it can ensure that the underground tunnel will not cause disturbance to pipelines and municipal roads when passing under them, thereby reducing construction risks, solving the problem of water and sand gushing during the underground tunnel excavation process, and also protecting water resources.

[0004] However, there are still the following problems when using it: there is no corresponding covering structure on the supporting structure, and the support for the tunnel is achieved by pouring concrete on the supporting structure. The concrete pouring method has the problem of long construction time. At the same time, the height of the supporting structure provided by it is fixed, which is difficult to apply to dark tunnels of different heights, and there are certain limitations in use. Utility Model Content

[0005] In order to solve the above problems existing in the prior art, the utility model provides a waterproof reinforcement structure for a dark-excavated tunnel with a large span section.

[0006] The technical solution of the utility model is as follows:

[0007] A waterproof reinforcement structure for a dark tunnel with a large span section, comprising a first arch support frame for matching with the dark tunnel, wherein a support covering assembly is arranged on the side wall of the first arch support frame close to the dark tunnel side, and the support covering assembly comprises a top arch plate and side curved plates and vertical support plates symmetrically arranged on both sides of the top arch plate, the top arch plate, the side curved plates and the vertical support plates are spliced ​​to form a shape adapted to the first arch support frame so as to be able to cover the side wall of the first arch support frame close to the dark tunnel side; symmetrically arranged support legs for standing are arranged below the first arch support frame, and adjustable support legs are movably inserted in the support legs on both sides, and the tops of the adjustable support legs on both sides extend outward from the tops of the corresponding side support legs and are connected to the corresponding side bottom ends of the first arch support frame; and adjustable legs are arranged on the support legs on both sides for adjusting the length of the adjustable support legs extending outward.

[0008] Among them, a first pressure plate is provided on the two side ends of the top arch plate, and a first lap plate is provided on the end of the side bent plates on both sides close to the top arch plate. The top arch plate is overlapped with the first lap plate on the corresponding side through the first pressure plates on both sides so as to be connected with the side bent plates on both sides, and a second lap plate is provided on the end of the side bent plates on both sides away from the top arch plate, and a second pressure plate is provided on the end of the vertical support plates on both sides close to the corresponding side bent plates, and the vertical support plates on both sides are overlapped with the second lap plate on the corresponding side through the second pressure plate so as to be connected with the side bent plates on both sides.

[0009] Wherein, the first pressing plate and the first overlapping plate, and the second pressing plate and the second overlapping plate are connected by connecting bolts.

[0010] Among them, the adjustment component includes a first plug-in hole opened on the supporting foot and a second plug-in hole opened on the adjusting support column, wherein the first plug-in holes are distributed in an array on the supporting foot along the length direction of the supporting foot, and at least one second plug-in hole is arranged on the adjusting support column, and the arrangement of the second plug-in hole satisfies that it can overlap with the first plug-in hole at different positions after the adjusting support column slides in the supporting foot, and a limiting pin is also inserted into the first plug-in hole and the second plug-in hole after the position overlaps.

[0011] Wherein, a second arch support frame is further arranged at a position of the first arch support frame away from the side of the dark excavated tunnel, and the second arch support frame is connected to the first arch support frame by arranging a supporting connecting column, and a limiting hole is provided on the side wall of the supporting foot column close to the second arch support frame, and the limiting hole is arranged on the supporting foot column in a one-to-one correspondence with the first plug-in hole and is connected to the corresponding first plug-in hole, and a limiting groove is provided on the side wall of the adjusting support column close to the second arch support frame, and the limiting groove is arranged on the adjusting support column in a one-to-one correspondence with the second plug-in hole and is connected to the corresponding second plug-in hole, and the limiting groove is arranged on the second plug-in hole When the position of the hole coincides with the first plug-in hole, the position of the limit slot can also coincide with the corresponding limit hole. An auxiliary support rod is movably provided at the bottom of the second arch support frame, and a limit block is movably provided at the end of the auxiliary support rod away from the second arch support frame. A third plug-in hole is provided on the limit block. The limit block can be inserted into the limit slot and the corresponding limit hole after the position of the limit slot coincides with the corresponding limit hole. After the limit block is inserted into the limit slot and the corresponding limit hole, the third plug-in hole can coincide with the position of the second plug-in hole at the corresponding position. The limiting pin passing through the first plug-in hole and the second plug-in hole can also pass through the third plug-in hole.

[0012] Wherein, a supporting connecting plate is provided at the bottom of the supporting foot column.

[0013] Wherein, the support connecting plate is provided with connecting holes, and the support connecting plate is also provided with reinforcing ribs for connecting the support connecting plate with the supporting foot column.

[0014] The utility model has the following beneficial effects:

[0015] The utility model arranges a supporting covering assembly on the first arch support frame. The supporting covering assembly is spliced ​​between the top arch plate, the side curved plate and the vertical support plate and cooperates with the first arch support frame to form the required water-stopping load-bearing supporting structure, so that it is possible to achieve water-stopping reinforcement of the dark-excavated tunnel without pouring concrete or only pouring a small amount of concrete. At the same time, the supporting foot column is connected to the first arch support frame by arranging an adjusting support column, and the length of the adjusting support column extending out of the supporting foot column is adjusted by cooperating with the setting of an adjusting assembly, thereby realizing the adjustment of the horizontal height of the first arch support frame so that it can be used in dark-excavated tunnels of different heights. Compared with the existing technology, it has the advantages of shortening the construction time and good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the support and covering assembly in the utility model;

[0018] Figure 3It is a structural schematic diagram of the adjustment component in the utility model;

[0019] Figure 4 This is the enlarged view of point A;

[0020] Figure 5 This is an enlarged view of point B.

[0021] The reference numerals in the figure are as follows:

[0022] 1. First arch support frame; 2. Top arch plate; 3. Side bending plate; 4. Vertical support plate; 5. Support foot column; 6. Adjustment support column; 7. First pressure plate; 8. First lap plate; 9. Second lap plate; 10. Second pressure plate; 11. Connecting bolt; 12. First plug hole; 13. Second plug hole; 14. Limiting pin; 15. Second arch support frame; 16. Support connecting column; 17. Limiting hole; 18. Limiting groove; 19. Auxiliary support rod; 20. Limiting block; 21. Third plug hole; 22. Support connecting plate; 23. Connecting hole; 24. Reinforcing rib. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example: Please refer to Figures 1 to 5 This embodiment provides a waterproof reinforcement structure for a large-span tunnel, including a first arch support frame 1 for matching with the tunnel, a support and covering assembly is arranged on the side wall of the first arch support frame 1 close to the tunnel, and the support and covering assembly includes a top arch plate 2 and side curved plates 3 and vertical support plates 4 symmetrically arranged on both sides of the top arch plate 2, wherein the side curved plates 3 on both sides are arranged between the corresponding side vertical support plates 4 and the top arch plate 2. The top arch plate 2, the side curved plates 3 and the vertical support plates 4 are spliced ​​to form a shape adapted to the first arch support frame 1 so as to cover the side wall of the first arch support frame 1 close to the tunnel. In this embodiment, a first pressure plate 7 is provided on both side ends of the top arch plate 2, and a first lap plate 8 is provided on the ends of the side bent plates 3 on both sides close to the top arch plate 2. The top arch plate 2 is overlapped with the first lap plates 8 on the corresponding side through the first pressure plates 7 on both sides so as to be connected to the side bent plates 3 on both sides, and a second lap plate 9 is provided on the ends of the side bent plates 3 on both sides away from the top arch plate 2. A second pressure plate 10 is provided on the ends of the vertical support plates 4 on both sides close to the corresponding side bent plates 3. The vertical support plates 4 on both sides are overlapped with the second lap plates 9 on the corresponding side through the second pressure plate 10 so as to be connected to the side bent plates 3 on both sides.

[0025] Through the above-mentioned settings, the supporting covering components are spliced ​​between the top arch plate 2, the side curved plates 3, and the vertical support plates 4 and cooperate with the first arch support frame 1 to form the required water-stopping load-bearing supporting structure, so that it is possible to achieve water-stopping reinforcement of the dark-excavated tunnel without pouring concrete or only pouring a small amount of concrete. At the same time, by adopting a split structural design for the supporting covering components, the top arch plate 2, the side curved plates 3 and the vertical support plates 4 can be manufactured separately, and during the construction process, the required installation can be completed by corresponding splicing following the formation of the dark-excavated tunnel, thereby greatly shortening the required construction time.

[0026] In order to strengthen the connection between the top arch plate 2, the side bent plate 3 and the vertical support plate 4, in the present embodiment, the first pressure plate 7 and the first lap plate 8, and the second pressure plate 10 and the second lap plate 9 are connected by setting connecting bolts 11, thereby ensuring the stability of the connection between the top arch plate 2 and the side bent plate 3, and between the side bent plate 3 and the vertical support plate 4.

[0027] A symmetrically arranged support column 5 for standing is also provided below the first arch support frame 1, and an adjustment support column 6 is movably inserted into the support columns 5 on both sides, and the adjustment support column 6 can slide in the vertical direction on the support columns 5. The tops of the adjustment support columns 6 on both sides extend outward from the tops of the corresponding side support columns 5 and are connected to the corresponding side bottom ends of the first arch support frame 1; the support columns 5 on both sides are provided with an adjustment component for adjusting the length of the adjustment support column 6 extending out of the support columns 5;

[0028] The adjustment component includes a first plug-in hole 12 opened on the supporting foot 5 and a second plug-in hole 13 opened on the adjusting support column 6, wherein the first plug-in holes 12 are distributed in an array on the supporting foot 5 along the length direction of the supporting foot 5, and the specific number of the first plug-in holes 12 can be determined according to actual conditions. At least one second plug-in hole 13 is set on the adjusting support column 6, and the specific number of the second plug-in holes 13 can also be determined according to actual conditions. In this embodiment, one second plug-in hole 13 is set on one side of the adjusting support column 6. The aperture of the second plug hole 13 is the same as that of the first plug hole 12. The second plug hole 13 is set so that it can overlap with the first plug hole 12 at different positions after the adjustment support column 6 slides in the support foot 5. A limiting pin 14 is also inserted into the first plug hole 12 and the second plug hole 13 after the position overlaps. The limiting pin 14 can limit the positional relationship between the adjustment support column 6 and the support foot 5 by being inserted into the first plug hole 12 and the second plug hole 13 at the same time, so as to fix the adjustment support column 6 and the support foot 5.

[0029] Through the above-mentioned settings, when the water-stopping reinforcement structure is suitable for dark excavated tunnels of different heights, by fixing the supporting foot column 5 on the bearing surface, and then moving the adjustable support columns 6 on both sides upward so that the adjustable support columns 6 on both sides lift the first arch support frame 1 upward to a suitable position, by inserting the limiting pin 14 into the first plug hole 12 and the second plug hole 13, the positional relationship between the supporting foot column 5 and the adjustable support column 6 is limited, so that it can be applicable to dark excavated tunnels of different heights, and the scope of application is wide.

[0030] At the same time, due to the setting of the support foot column 5 and the adjustable support column 6, the contact surface between the water-stopping reinforcement structure and the dark-cut tunnel will be additionally increased. In order to ensure the performance of the water-stopping reinforcement structure, in this embodiment, the setting of the vertical support plates 4 on both sides satisfies that they can cover the side walls of the corresponding side support foot column 5 and the adjustable support column 6 close to the dark-cut tunnel side, so as to ensure the performance of the water-stopping reinforcement structure. In addition, since the length of the dark-cut tunnel may be very long, the first arch support frame 1 should be arranged along the length direction of the dark-cut tunnel, so the corresponding support covering components, support foot column 5, adjustable support column 6 and other structures should also be arranged accordingly. The adjacent first arch support frames 1 and adjacent first support covering components arranged along the length direction of the dark-cut tunnel can be connected by common connection methods such as bolt connection according to actual conditions to ensure the stability of the overall structure.

[0031] In order to further improve the structural stability of the whole water-stopping reinforcement structure, in the present embodiment, a second arched support frame 15 is further provided at a position of the first arched support frame 1 away from the side of the dark excavated tunnel, and the second arched support frame 15 is connected to the first arched support frame 1 by providing a support connecting column 16. The second arched support frame 15 cooperates with the provision of the support connecting column 16 to increase the structural strength of the first arched support frame 1, ensuring that it is not prone to fracture, deformation, etc.;

[0032] Limiting holes 17 are provided on the side walls of the supporting legs 5 on both sides close to the second arch support frame 15. The limiting holes 17 are arranged on the supporting legs 5 in a one-to-one correspondence with the first plug-in holes 12 and are connected to the corresponding first plug-in holes 12. Limiting grooves 18 are provided on the side walls of the adjusting support columns 6 on both sides close to the second arch support frame 15. The limiting grooves 18 are adapted to the limiting holes 17. The limiting grooves 18 are arranged on the adjusting support columns 6 in a one-to-one correspondence with the second plug-in holes 13 and are connected to the corresponding second plug-in holes 13. When the positions of the second plug-in holes 13 coincide with those of the first plug-in holes 12, the positions of the limiting grooves 18 can also coincide with the corresponding limiting holes 17. An auxiliary support rod 19 is movably provided at the bottom of the second arch support frame 15, and a limit block 20 is movably provided at the end of the auxiliary support rod 19 away from the second arch support frame 15. The movable connection between the auxiliary support rod 19 and the second arch support frame 15 and the movable connection between the limit block 20 and the auxiliary support rod 19 can be realized by using a hinge connection or a rotating shaft connection in the prior art. The limit block 20 is adapted to the limit slot 18, and a third plug hole 21 is provided on the limit block 20. The aperture of the third plug hole 21 is the same as that of the second plug hole 13. The limit block 20 can be inserted into the limit slot 18 and the corresponding limit hole 17 after the limit slot 18 and the corresponding limit hole 17 are overlapped. After the limit block 20 is inserted into the limit slot 18 and the corresponding limit hole 17, the third plug hole 21 can overlap with the second plug hole 13 at the corresponding position. The limiting pin 14 that passes through the first plug hole 12 and the second plug hole 13 can also pass through the third plug hole 21;

[0033] Through the above-mentioned settings, after the positions of the support column 6 and the support foot 5 are adjusted to the desired positions, at this time, first insert the limit block 20 into the corresponding limit groove 18 and the limit hole 17, and then insert the limit pin 14 into the first plug hole 12 at the corresponding position, so that the limit pin 14 passes through the first plug hole 12, the second plug hole 13 and the third plug hole 21 at the same time. At this time, the limit pin 14 can fix the limit block 20 with the support foot 5 and the adjustable support column 6, so that the limit block 20 can also bring a supporting effect for the fixation of the position between the support foot 5 and the adjustable support column 6, thereby improving the overall structural stability of the water-stopping reinforcement structure.

[0034] In order to facilitate the fixing of the support leg 5, a support connecting plate 22 is provided at the bottom of each support leg 5, a connecting hole 23 is provided on each support connecting plate 22, and a reinforcing rib 24 for connecting the support connecting plate 22 with the support leg 5 is also provided on the support connecting plate 22. Through the above arrangement, when it is necessary to fix the support leg 5, the anchor bolts are driven into the connecting holes 23, and the support leg 5 can be fixed by fixing the support connecting plate 22.

[0035] According to the working principle of the utility model, when in use, a conveying tool such as a crane can be used to lift the water-stopping reinforcement structure into the excavated dark tunnel, and then the supporting covering assembly can be installed on the first arch support frame 1, and then the length of the support column 6 extending out of the supporting foot column 5 can be adjusted according to the height of the dark tunnel to adjust the horizontal height of the first arch support frame 1. After the adjustment is completed, the limit block 20 is inserted into the limit groove 18 and the limit hole 17, and the limit pin 14 is inserted into the first plug hole 12, the second plug hole 13 and the third plug hole 21.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A waterproof reinforcement structure for a dark-excavated tunnel with a large span section, comprising a first arch support frame (1) for matching with the dark-excavated tunnel, characterized in that: The first arch support frame (1) is provided with a support covering assembly on the side wall close to the dark tunnel side, and the support covering assembly comprises a top arch plate (2) and side curved plates (3) and vertical support plates (4) symmetrically arranged on both sides of the top arch plate (2); the top arch plate (2), the side curved plates (3) and the vertical support plates (4) are spliced ​​to form a shape adapted to the first arch support frame (1) so as to cover the side wall of the first arch support frame (1) close to the dark tunnel side; symmetrically arranged support legs (5) for standing are provided below the first arch support frame (1); adjustable support legs (6) are movably inserted in the support legs (5) on both sides; the tops of the adjustable support legs (6) on both sides extend outwards from the tops of the corresponding side support legs (5) and are connected to the corresponding side bottom ends of the first arch support frame (1); and adjustable components for adjusting the length of the adjustable support legs (6) extending out of the support legs (5) are provided on the support legs (5) on both sides.

2. The waterproof reinforcement structure for a large-span tunnel according to claim 1 is characterized in that: The top arch plate (2) is provided with a first pressure plate (7) on both side ends, and a first lap plate (8) is provided on both side ends of the side curved plates (3) close to the top arch plate (2). The top arch plate (2) is overlapped with the first lap plates (8) on the corresponding side through the first pressure plates (7) on both sides so as to be connected to the side curved plates (3) on both sides. The side curved plates (3) on both sides are provided with a second lap plate (9) on the ends away from the top arch plate (2). The vertical support plates (4) on both sides are provided with a second pressure plate (10) on the ends close to the side curved plates (3) on the corresponding side. The vertical support plates (4) on both sides are overlapped with the second lap plates (9) on the corresponding side through the second pressure plate (10) so as to be connected to the side curved plates (3) on both sides.

3. The waterproof reinforcement structure for a large-span tunnel according to claim 2 is characterized in that: The first pressing plate (7) and the first overlapping plate (8), as well as the second pressing plate (10) and the second overlapping plate (9), are connected by means of connecting bolts (11).

4. The waterproof reinforcement structure for a large-span tunnel according to claim 1 is characterized in that: The adjustment component comprises a first plug hole (12) provided on the support foot column (5) and a second plug hole (13) provided on the adjustment support column (6), wherein the first plug holes (12) are arranged in an array on the support foot column (5) along the length direction of the support foot column (5), and at least one second plug hole (13) is provided on the adjustment support column (6), and the second plug hole (13) is arranged so as to be able to overlap with the first plug hole (12) at different positions after the adjustment support column (6) slides in the support foot column (5), and a limiting pin (14) is further inserted into the first plug hole (12) and the second plug hole (13) after the overlap.

5. The waterproof reinforcement structure for a large-span tunnel according to claim 4 is characterized in that: A second arch support frame (15) is further provided at a position of the first arch support frame (1) away from the side of the dark excavated tunnel. The second arch support frame (15) is connected to the first arch support frame (1) by providing a support connection column (16). A limiting hole (17) is provided on the side wall of the support foot column (5) close to the second arch support frame (15). The limiting hole (17) is provided on the support foot column (5) in a one-to-one correspondence with the first plug hole (12) and is connected to the corresponding first plug hole (12). A limiting groove (18) is provided on the side wall of the adjustment support column (6) close to the second arch support frame (15). The limiting groove (18) is provided on the side wall of the adjustment support column (6) in a one-to-one correspondence with the second plug hole (13) and is connected to the corresponding second plug hole (13). The position of the second plug hole (13) and the first plug hole (12) is When the positions of the limiting groove (18) and the corresponding limiting hole (17) are overlapped, the position of the limiting groove (18) can also overlap with the corresponding limiting hole (17); an auxiliary support rod (19) is movably provided at the bottom of the second arch support frame (15); a limiting block (20) is movably provided at the end of the auxiliary support rod (19) away from the second arch support frame (15); a third plugging hole (21) is provided on the limiting block (20); the limiting block (20) can be inserted into the limiting groove (18) and the corresponding limiting hole (17) after the positions of the limiting groove (18) and the corresponding limiting hole (17) overlap; the third plugging hole (21) can overlap with the position of the second plugging hole (13) at the corresponding position after the limiting block (20) is inserted into the limiting groove (18) and the corresponding limiting hole (17); and the limiting pin (14) that passes through the first plugging hole (12) and the second plugging hole (13) can also pass through the third plugging hole (21).

6. The waterproof reinforcement structure for a large-span dark-excavated tunnel according to claim 1 is characterized by: A supporting connecting plate (22) is provided at the bottom of the supporting foot column (5).

7. The waterproof reinforcement structure for a dark-excavated tunnel with a large span section according to claim 6 is characterized by: The support connecting plate (22) is provided with a connecting hole (23), and the support connecting plate (22) is also provided with a reinforcing rib (24) for connecting the support connecting plate (22) to the support foot column (5).

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