Tunnel concrete secondary lining void grouting hole sealing auxiliary device

Abstract

The utility model relates to the technical field of tunnel engineering construction devices, in particular to a tunnel concrete secondary lining void grouting hole sealing auxiliary device which comprises an attaching steel plate detachably connected with a tunnel secondary lining wall, a center hole is formed in the center of the attaching steel plate, and a center ring is arranged in the center hole. A plurality of connecting rods which are annularly arranged at equal intervals are fixedly installed between the annular side face of the center ring and the hole wall of the center hole, a rubber ring is arranged in the center hole and comprises a lower inserting ring matched with the center hole in an inserting mode, and a grouting assembly is arranged in the lower inserting ring and comprises a grouting pipe matched with the lower inserting ring in an inserting mode; an upper cutting pipe is fixedly installed at the top end of the grouting pipe, a pressing disc pressed on the top face of the lower inserting ring is fixedly installed on the grouting pipe, and a waterproof rubber plug is arranged in the upper cutting pipe in an interference fit mode. The grouting device has a better sealing effect, is not easy to leak, and is beneficial to smooth grouting operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to tunnel engineering construction device technical field, concretely relates to tunnel concrete second lining cavity grouting hole sealing auxiliary device. BACKGROUND

[0002] In tunnel engineering construction, concrete secondary lining (second lining) is the key link of guaranteeing tunnel structure stability and safety, however, due to various factors in the concrete pouring process, such as vibration not dense, concrete shrinkage etc., the cavity phenomenon between second lining and surrounding rock is easy to appear, in order to eliminate the cavity, the grouting is usually used to fill, and after completing grouting, the grouting hole is sealed.

[0003] The patent for invention with the authorized announcement number CN111022082B discloses a kind of tunnel concrete second lining cavity grouting hole sealing device, belongs to tunnel engineering technical field, and its technical scheme is as follows: blocking steel plate is installed in the positioning steel plate groove, positioning steel plate is fixed at the cavity point of tunnel second lining wall by expansion screw, auxiliary steel plate and grouting pipe are connected with auxiliary steel plate vertically and extruded with rubber ring through auxiliary steel plate end, grouting pipe is connected cement slurry pump to carry out pressure grouting to cavity part, hammer is used to hammer along the groove longitudinal direction to blocking steel plate, make concrete cutting blade cut rubber ring, when concrete cutting blade cuts rubber ring, blocking steel plate is used to seal grouting hole;Through this way, tunnel concrete second lining cavity grouting hole sealing process can be quickly completed.

[0004] Although the technical scheme has the advantage of quickly completing tunnel concrete second lining cavity grouting hole sealing process, but the rubber ring part on most grouting hole sealing auxiliary devices is generally single-layer sealed when using rubber ring to seal grouting hole sealing part, and the rubber ring part and grouting pipeline are also sealed by mutual adhesion, which requires high dimensional accuracy, and the sealing failure caused by error can affect the sealing effect and further adversely affect subsequent grouting operation. In view of this, we propose a tunnel concrete second lining cavity grouting hole sealing auxiliary device. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing tunnel concrete second lining cavity grouting hole sealing auxiliary device to solve the defects proposed in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] The utility model provides a kind of auxiliary device for tunnel concrete secondary lining cavity grouting and hole sealing, including the detachable connection of adhering steel plate between tunnel secondary lining wall, the center position of adhering steel plate is provided with center hole, the inside of center hole is provided with center ring, a plurality of ring-shaped equidistantly arranged connecting rods are fixedly installed between the annular side surface of center ring and the hole wall of center hole, rubber ring is provided in the center hole, the rubber ring includes lower insertion ring, the lower insertion ring is provided with grouting assembly, the grouting assembly includes grouting pipe, the top of grouting pipe is fixedly installed with upper cutting pipe, grouting pipe is fixedly installed with pressing disc pressed on the top surface of lower insertion ring, waterproof rubber plug is interference fitted in the upper cutting pipe.

[0008] Preferably, long screw holes are provided on the plate body in each side direction of the adhering steel plate, expansion screws are provided in the long screw holes, and the expansion screws are fixedly installed in the tunnel secondary lining wall.

[0009] Preferably, the long screw holes are in a strip shape, and the length of the long screw holes is between 10 cm and 18 cm.

[0010] The two settings facilitate fixing operation on the corresponding expansion screw fixing part according to the actual situation.

[0011] Preferably, an insertion hole is provided in the center ring, a penetration hole is provided at the center position of the lower insertion ring, and the grouting pipe penetrates through the insertion hole and the penetration hole.

[0012] This setting enables the grouting pipe to normally complete the penetration operation.

[0013] Preferably, an upper insertion slot is provided between the upper side of the connecting rod and the hole wall of the center hole, and the lower insertion ring is inserted and matched with the upper insertion slot.

[0014] This setting realizes sealing operation by abutting the lower insertion ring against the connecting rod.

[0015] Preferably, a plurality of studs are fixedly installed on the top surface of the adhering steel plate and arranged around the center hole, a side rubber ring is fixedly installed on the side surface of the lower insertion ring, a plurality of screw holes are provided on the side rubber ring, a plurality of through holes are provided on the pressing disc, the studs penetrate through the corresponding screw holes and through holes and are fixed by nuts.

[0016] This setting can fix the pressing disc and the side rubber ring.

[0017] Preferably, a center gasket is fixedly installed at the center position of the top surface of the lower insertion ring, a lower pressing sleeve is fixedly installed on the bottom surface of the pressing disc, and the lower pressing sleeve is sleeved on the center gasket.

[0018] Preferably, an annular groove is provided in the bottom surface of the lower compression sleeve, and the central washer is inserted into the annular groove;

[0019] The above two settings can achieve a further sealing effect between the lower compression sleeve and the lower compression sleeve.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model achieves a multi-layered, multi-angle sealing structure design by setting up a stable frame composed of a fitted steel plate, a central ring, and a connecting rod, combined with the multiple insertion and engagement of the lower insertion ring of the rubber ring with the central hole and the upper insertion groove, and the fixing method of the side rubber ring and the pressure plate by studs and nuts. This design reduces the dependence on the dimensional accuracy of a single sealing component. Even if there is a certain error, the sealing effect can be guaranteed through the multiple sealing structures, avoiding sealing failure and providing a stable guarantee for subsequent grouting and other operations.

[0022] 2. This utility model, by setting a cut-out tube at the top of the grouting pipe and inserting a waterproof rubber plug inside, and by utilizing the insertion fit between the lower clamping sleeve on the clamping plate and the center washer on the top surface of the lower insertion ring, not only ensures that the grout will not leak during the grouting process, but also effectively prevents external moisture from seeping in during the sealing process. This structural design enhances the sealing and waterproofing of the device in the two key stages of grouting and sealing, and improves the waterproofing performance and stability of the tunnel secondary lining structure.

[0023] 3. This utility model, by setting long screw holes on the bonding steel plate and using expansion screws for installation and fixation, allows the device to flexibly select the fixing position of the expansion screws according to the actual situation of the tunnel secondary lining wall, which facilitates installation and operation, enhances the adaptability of the device to different construction environments and wall conditions, and improves the versatility and practicality of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is one of the partial structural schematic diagrams of this utility model;

[0026] Figure 3 This is the second partial structural schematic diagram of the present utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the rubber ring of this utility model;

[0028] Figure 5 This is a schematic diagram of the grouting assembly of this utility model;

[0029] Figure 6 This is the third partial structural schematic diagram of this utility model;

[0030] The meanings of the labels in the diagram are as follows:

[0031] 1. Fitting steel plate; 10. Long screw hole; 11. Expansion screw; 12. Center hole; 13. Center ring; 131. Insertion hole; 14. Connecting rod; 15. Upper insertion groove; 16. Stud;

[0032] 2. Rubber ring; 20. Center washer; 21. Lower insert ring; 22. Insertion hole; 23. Side rubber ring; 231. Screw hole;

[0033] 3. Grouting assembly; 30. Grouting pipe; 31. Upper cutting pipe; 32. Pressing plate; 321. Through hole; 33. Lower pressing sleeve; 331. Annular groove;

[0034] 4. Waterproof rubber stopper. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figures 1-6 This utility model provides a technical solution: an auxiliary device for grouting and sealing voids in tunnel concrete secondary lining, comprising a bonding steel plate 1 detachably connected to the tunnel secondary lining wall. Each side of the bonding steel plate 1 is provided with a long screw hole 10, and an expansion screw 11 is installed inside the long screw hole 10. The expansion screw 11 is fixedly installed inside the tunnel secondary lining wall. The long screw hole 10 is elongated, with a length between 10cm and 18cm, allowing the bonding steel plate 1 to flexibly adjust the fixing position of the expansion screw 11 according to the actual condition of the tunnel secondary lining wall, facilitating installation and enhancing the adaptability and stability of the connection between the device and the wall.

[0037] In this embodiment, a central hole 12 is provided at the center of the steel plate 1. A central ring 13 is provided inside the central hole 12. A plurality of connecting rods 14 arranged in a ring at equal intervals are fixedly installed between the annular side of the central ring 13 and the hole wall of the central hole 12. A rubber ring 2 is provided inside the central hole 12. The rubber ring 2 includes a lower insertion ring 21 that is inserted into the central hole 12. A grouting component 3 is provided inside the lower insertion ring 21. The grouting component 3 includes components that are inserted into the lower insertion ring 21. The grouting pipe 30 is interlocked with an upper cut pipe 31 fixedly installed at the top end of the grouting pipe 30. A pressing plate 32 is fixedly installed on the grouting pipe 30 and pressed against the top surface of the lower interlocking ring 21. An interlocking hole 131 is provided in the center ring 13, and an insertion hole 22 is provided at the center of the lower interlocking ring 21. The grouting pipe 30 passes through the interlocking hole 131 and the insertion hole 22, so that the grouting pipe 30 can be smoothly inserted, providing a reliable positioning and support foundation for the installation and operation of the grouting assembly 3.

[0038] Specifically, an upper insertion groove 15 is provided between the upper part of the connecting rod 14 and the wall of the central hole 12. The lower insertion ring 21 is inserted into the upper insertion groove 15 to achieve a seal between the lower insertion ring 21 and the connecting rod 14. This effectively prevents the grout from leaking from the central hole 12 of the steel plate 1 during the grouting process, ensuring the sealing effect and improving the reliability of the grouting operation.

[0039] like Figure 1 As shown, a waterproof rubber plug 4 is interference-fitted inside the upper cut tube 31. The waterproof rubber plug 4 can be made of waterproof rubber material or a rubber plug can be inserted for sealing. In the sealing stage after grouting, the waterproof rubber plug 4 can effectively block the grouting pipe 30 to prevent external moisture or other substances from entering the grouting hole. It works in conjunction with other sealing structures of the device to ensure the waterproofness and sealing of the hole and ensure the safety and stability of the tunnel secondary lining structure.

[0040] In addition, multiple studs 16 are fixedly installed on the top surface of the bonding steel plate 1, with the central hole 12 as the center. A side rubber ring 23 is fixedly installed on the side of the lower insertion ring 21. Multiple screw holes 231 are provided on the side rubber ring 23. Multiple through holes 321 are provided on the clamping plate 32. The studs 16 pass through the corresponding screw holes 231 and through holes 321 and are fixed with nuts. The nuts are used to fix the clamping plate 32 and the side rubber ring 23, which not only fixes the grouting pipe 30, but also further enhances the sealing performance between the rubber ring 2 and the bonding steel plate 1, preventing grout from overflowing from the side.

[0041] It is worth noting that a center washer 20 is fixedly installed at the center of the top surface of the lower insertion ring 21, and a lower clamping sleeve 33 is fixedly installed on the bottom surface of the clamping plate 32. The lower clamping sleeve 33 is fitted onto the center washer 20, and an annular groove 331 is provided in the bottom surface of the lower clamping sleeve 33. The center washer 20 and the annular groove 331 are inserted and fitted together, which further strengthens the seal at the connection between the grouting pipe 30 and the lower insertion ring 21, forming a multi-seal structure, which greatly improves the sealing effect of the entire device and avoids affecting the grouting and sealing quality due to poor sealing.

[0042] When using the auxiliary device for grouting and sealing the void in the secondary lining of the tunnel concrete of this utility model, the appropriate position is selected by adjusting the length range of the long screw hole 10 on the fitting steel plate 1, and the fitting steel plate 1 is fixed to the secondary lining wall of the tunnel by using the expansion screw 11 to complete the installation and fixing of the device.

[0043] Next, the grouting pipe 30 is passed through the insertion hole 131 of the central ring 13 and the insertion hole 22 of the lower insertion ring 21 in sequence, and the lower insertion ring 21 is inserted and engaged with the central hole 12 and the upper insertion groove 15. The stud 16 is passed through the screw hole 231 of the side rubber ring 23 and the through hole 321 of the pressure plate 32. The nut is tightened to fix the grouting assembly 3.

[0044] Then, grouting is prepared. During grouting, grout is injected through grouting pipe 30. The lower insertion ring 21 cooperates with the connecting rod 14 and the upper insertion groove 15 to seal. The side rubber ring 23 cooperates with the pressure plate 32 to prevent grout leakage from the side. The central washer 20 and the lower pressure sleeve 33 further strengthen the seal at the connection of grouting pipe 30. After grouting is completed, the grouting pipe 30 is sealed with waterproof rubber plug 4 to complete the sealing and ensure the safety and stability of the tunnel secondary lining structure.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tunnel concrete secondary lining void grouting and hole sealing auxiliary device, comprising a adhering steel plate (1) which is detachably connected with the tunnel secondary lining wall, characterized in that: The center position of the fitting steel plate (1) is provided with a center hole (12), the inside of the center hole (12) is provided with a center ring (13), a plurality of connecting rods (14) arranged in a ring shape are fixedly installed between the annular side of the center ring (13) and the hole wall of the center hole (12), a rubber ring (2) is arranged in the center hole (12), the rubber ring (2) comprises a lower plug-in ring (21) plugged with the center hole (12), a grouting assembly (3) is arranged in the lower plug-in ring (21), the grouting assembly (3) comprises a grouting pipe (30) plugged with the lower plug-in ring (21), the top end of the grouting pipe (30) is fixedly installed with an upper cutting pipe (31), the grouting pipe (30) is fixedly installed with a pressing disc (32) pressed on the top surface of the lower plug-in ring (21), and a waterproof rubber plug (4) is interference-fitted in the upper cutting pipe (31).

2. The tunnel concrete secondary lining void grouting and hole sealing auxiliary device according to claim 1, characterized in that: Long screw holes (10) are arranged on the plate body in each side direction of the fitting steel plate (1), and expansion screws (11) are arranged in the long screw holes (10), and the expansion screws (11) are fixedly installed in the tunnel secondary lining wall.

3. The tunnel concrete secondary lining void grouting and hole sealing auxiliary device according to claim 2, characterized in that: The long screw hole (10) is in a strip shape, and the length of the long screw hole (10) is between 10cm and 18cm.

4. The tunnel concrete secondary lining void grouting and hole sealing auxiliary device according to claim 1, characterized in that: The center ring (13) is provided with a plug-in hole (131), and the center position of the lower plug-in ring (21) is provided with a penetrating hole (22), and the grouting pipe (30) penetrates through the plug-in hole (131) and the penetrating hole (22).

5. The tunnel concrete secondary lining void grouting and hole sealing auxiliary device according to claim 1, characterized in that: An upper plug-in groove (15) is arranged between the upper side of the connecting rod (14) and the hole wall of the center hole (12), and the lower plug-in ring (21) is plugged with the upper plug-in groove (15).

6. The tunnel concrete secondary lining void grouting and hole sealing auxiliary device according to claim 1, characterized in that: A plurality of studs (16) are fixedly installed on the top surface of the fitting steel plate (1) and arranged around the center hole (12), a side rubber ring (23) is fixedly installed on the side surface of the lower plug-in ring (21), a plurality of screw holes (231) are arranged on the side rubber ring (23), a plurality of through holes (321) are arranged on the pressing disc (32), the stud (16) penetrates through the corresponding screw hole (231) and the through hole (321) and is fixed by using a nut.

7. The tunnel concrete secondary lining void grouting and hole sealing auxiliary device according to claim 6, characterized in that: A center gasket (20) is fixedly installed at the center position of the top surface of the lower plug-in ring (21), a lower pressing sleeve (33) is fixedly installed on the bottom surface of the pressing disc (32), and the lower pressing sleeve (33) is sleeved on the center gasket (20).

8. The tunnel concrete secondary lining disengaging grouting and hole sealing auxiliary device according to claim 7, characterized in that: An annular groove (331) is arranged in the bottom surface of the lower pressing sleeve (33), and the center gasket (20) is plugged with the annular groove (331).

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