CN217582152U - Tunnel vault is come to nothing and is taken mould slip casting system - Google Patents
Tunnel vault is come to nothing and is taken mould slip casting system Download PDFInfo
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- CN217582152U CN217582152U CN202221155955.0U CN202221155955U CN217582152U CN 217582152 U CN217582152 U CN 217582152U CN 202221155955 U CN202221155955 U CN 202221155955U CN 217582152 U CN217582152 U CN 217582152U
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Abstract
The utility model relates to a tunnel vault evacuation tape mold slip casting system, which comprises a two-lining trolley, wherein the two-lining trolley comprises a trolley top mold and a trolley end mold, and three groups of slip casting components and pouring holes are alternately arranged on the trolley top mold; each group of grouting parts comprises a fixed flange welded on the lower wall of the trolley top mold, a movable flange connected below the fixed flange through bolts and a pre-buried grouting pipe, and the movable flange comprises a disc body and a pipe body; the embedded grouting pipe comprises a grouting pipe and a butt wire welded at the lower end of the grouting pipe, the upper end of the grouting pipe penetrates through the trolley top die and abuts against the arch crown of the tunnel, the upper end of the grouting pipe is provided with a cross overflow notch, and the butt wire is in threaded connection with the pipe body; the extension pipe body at the lower end of the counter wire is sequentially communicated with a valve, a connecting pipe with a pressure gauge, a pipe joint, a grouting hose and a grouting machine. The utility model discloses effectively solved the difficult observation of concrete placement process, gaseous difficult emission has prevented the hollow production of two lining vaults, has avoided the cavity to produce post processing and has caused the hidden danger of leaking.
Description
Technical Field
The utility model relates to a tunnel slip casting construction technical field especially relates to tunnel vault sky area mould slip casting system that takes.
Background
At present, in the current situation of tunnel construction in China, primary support often only plays a temporary sealing role, and is exactly a measure in the construction process. When the initial support convergence cannot be stable, the secondary lining is generally carried out immediately, which is a construction principle followed in the actual engineering. The function of the two liners is not merely a safety reserve, but instead bears the greater surrounding rock bulk pressure.
In this case, whether or not there is a void behind the tunnel will directly affect the security performance of the tunnel. If the void exists, the lining cannot play a role in actively limiting deformation in the first time of deformation of surrounding rocks and primary supports, and can only be passively supported after the deformation reaches a certain degree, so that huge hidden danger can be caused to tunnel safety. In view of this, the control of the void behind the tunnel secondary lining is particularly important.
The arch crown position is easy to be emptied in the pouring process of the tunnel secondary lining integral hydraulic template, the technical problems such as later difficult processing and the like are solved, the concrete pouring process in a cast-out area is difficult to observe, the difficulty of the pouring compactness degree is ensured, the gas emission is difficult, the slurry leakage phenomenon exists, and the construction quality is difficult to ensure.
Disclosure of Invention
The utility model discloses a solve the problem of vault goaf concrete placement difficulty, provide tunnel vault goaf area mould slip casting system, can guarantee concrete placement's closely knit, guarantee simultaneously that the stability of each part installation is inseparable, ensure construction quality in case the slurry leakage.
In order to achieve the above object, the utility model adopts the following technical scheme:
the tunnel vault emptying belt mold grouting system comprises a secondary lining trolley arranged in a tunnel, wherein the secondary lining trolley comprises a trolley top mold and a trolley end mold, three groups of grouting pieces and pouring holes are alternately arranged on the trolley top mold, and the pouring holes and the grouting pieces penetrate through the trolley top mold;
each group of grouting parts comprises a fixed flange welded on the lower wall of the trolley top mold, a movable flange connected below the fixed flange through bolts and a pre-buried grouting pipe arranged between the fixed flange and the movable flange in a penetrating mode, each movable flange comprises a disc body and a pipe body which are arranged in a T shape, and a limiting groove is formed in each disc body;
the embedded grouting pipe comprises a grouting pipe and a butt wire welded at the lower end of the grouting pipe, the upper end of the grouting pipe penetrates through a trolley top die and abuts against the arch crown of the tunnel, the upper end of the grouting pipe is provided with a cross-shaped overflow opening, the joint of the grouting pipe and the butt wire abuts against a limiting groove in a boss shape, the joint of the grouting pipe and the butt wire is wound with an electric adhesive tape for sealing, and the butt wire is in threaded connection with the pipe body;
stretch out the body to silk lower extreme and communicate in proper order has valve, has connecting pipe, coupling and slip casting hose and the slip casting machine of manometer, and then is convenient for carry out the slip casting operation.
Further, a void area exists between the trolley top die and the tunnel vault; the three groups of grouting parts are arranged at intervals along the tunneling direction of the tunnel, a pouring hole is formed in the trolley top mold between every two adjacent groups of grouting parts, and the pouring hole and the grouting parts are communicated with the inside and the outside of the gob. Concrete is convenient to pour into the void area through the pouring holes, the pouring condition of the concrete can be convenient to observe through the grouting piece, and grouting in the void area can also be realized.
Furthermore, two groups of grouting pieces are respectively 0.75m away from the end part of the trolley top die, and the other group of grouting pieces are positioned in the middle of the trolley top die; and the distance between the two pouring holes and the end part of the trolley top die is 2.25m respectively.
Furthermore, the fixed flange is disc-shaped, the grouting piece and the trolley top die are installed through the fixed flange, a plurality of screw rods are welded at the lower end of the fixed flange in the circumferential direction, the disc body penetrates through the screw rods, and nuts are connected to the screw rods to fasten the movable flange, so that the fixed flange and the movable flange can be conveniently installed; and a sealing gasket is arranged between the fixed flange and the movable flange, so that the installation tightness is ensured.
Furthermore, the limiting groove is circular, and the grouting pipe abuts against the limiting groove to prevent downward movement; the pair of threads are circular tube structures with external threads arranged at two ends, the upper ends of the pair of threads are connected in the tube body, the lower ends of the pair of threads are connected with the valve, and the valve is tightly propped against the lower end of the tube body.
Through the technical scheme, the beneficial effects of the utility model are that:
the utility model has the advantages of reasonable design, pre-buried slip casting pipe is through to silk and body threaded connection, guarantees the fixed of pre-buried slip casting pipe, and pre-buried slip casting pipe produces when avoiding concrete placement and floats, supports at the body lower extreme behind valve and the threaded connection to silk simultaneously, further guarantees the fixed of pre-buried slip casting pipe again, avoids reciprocating, realizes the stability of slip casting operation.
The utility model discloses make the slip casting at platform truck top to pre-buried slip casting pipe observes the hole as the concrete grouting in-process, the exhaust hole, also can regard as later stage slip casting reinforcement hole, the difficult observation of concrete placement process has effectively been solved, gaseous difficult emission, the hollow production of two lining vaulting tops has been prevented, avoided the cavity to produce post processing and caused the hidden danger of leaking, the slip casting process influences technical problem such as other process constructions, the construction quality and the efficiency of construction that produce in the improvement secondary lining work progress, construction cost is reduced.
Drawings
Fig. 1 is the utility model discloses tunnel vault sky area mould slip casting system's overall structure schematic diagram.
Figure 2 is the utility model discloses tunnel vault sky area mould slip casting system's slip casting schematic diagram.
Fig. 3 is the utility model discloses tunnel vault sky area mould slip casting system's slip casting machine slip casting pipeline schematic diagram.
The reference numbers in the drawings are as follows: the device comprises a trolley top die 1, a trolley end die 2, a void area 3, a pouring hole 4, a fixed flange 5, a movable flange 6, a tray body 61, a pipe body 62, a pre-buried grouting pipe 7, a grouting pipe 71, a butt wire 72, an overflow notch 8, a limiting groove 9, an electric adhesive tape 10, a valve 11, a pressure gauge 12, a connecting pipe 13, a pipe joint 14, a grouting hose 15, a grouting machine 16, a slope bottom 17 and a slope top 18.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings:
as shown in fig. 1 to 3, the tunnel vault emptying belt mold grouting system comprises a two-lining trolley arranged in a tunnel, wherein the two-lining trolley comprises a trolley top mold 1 and a trolley end mold 2, and a emptying area 3 is arranged between the trolley top mold 1 and the tunnel vault.
The trolley top die 1 is alternately provided with three groups of grouting parts and pouring holes 4, the three groups of grouting parts are distributed at intervals along the tunneling direction of the tunnel, two groups of grouting parts are respectively 0.75m away from the end part of the trolley top die 1, and the rest group of grouting parts are positioned in the middle of the trolley top die 1.
Pouring holes 4 are formed in the trolley top die 1 between the two adjacent groups of grouting parts, and the distance between each two pouring holes 4 and the end portion of the trolley top die 1 is 2.25m.
The pouring hole 4 and the grouting piece penetrate through the trolley top die 1, namely the pouring hole 4 and the grouting piece are communicated with the inside and the outside of the void area 3, and concrete can be poured into the void area 3 through the pouring hole 4 and the grouting piece.
Each group of grouting parts comprises a fixed flange 5 welded on the lower wall of the trolley top die 1, a movable flange 6 connected below the fixed flange 5 through bolts and an embedded grouting pipe 7 arranged between the fixed flange 5 and the movable flange 6 in a penetrating mode.
The fixed flange 5 is disc-shaped, and the outer diameter phi 114mm and the inner diameter phi 45mm of the fixed flange 5 are provided. When the fixed flange 5 is installed, the fixed flange and the trolley top die 1 are fully welded, and installation fixation is guaranteed.
The movable flange 6 comprises a disc body 61 and a pipe body 62 which are arranged in a T shape. When the fixed flange 5 and the movable flange 6 are installed, a plurality of screw rods are welded to the lower end of the fixed flange 5 in the circumferential direction, the disc body 61 is arranged on the plurality of screw rods in a penetrating mode, and nuts are connected to the screw rods to fasten the movable flange 6.
In order to ensure the installation tightness of the fixed flange 5 and the movable flange 6, a sealing gasket is arranged between the fixed flange 5 and the movable flange 6.
In this embodiment, the pre-buried grouting pipe 7 includes a grouting pipe 71 and a pair of wires 72 welded to the lower end of the grouting pipe 71. The upper end of the grouting pipe 71 penetrates through the trolley top die 1 and abuts against the arch crown of the tunnel, specifically, the upper end of the grouting pipe 71 abuts against a waterproof plate of the arch crown of the tunnel, the waterproof plate is laid and hung during primary support, and the upper end of the grouting pipe 71 is provided with a cross-shaped overflow opening 8.
The pair of threads 72 is a circular tube structure with external threads at two end parts, and the joint of the grouting tube 71 and the pair of threads 72 is in a boss shape. In order to realize the limiting of the embedded grouting pipe 7, a limiting groove 9 is formed in the disc body 61, the limiting groove 9 is circular, the joint of the grouting pipe 71 and the counter thread 72 is abutted to the limiting groove 9, namely the grouting pipe 71 is abutted to the limiting groove 9 to prevent downward movement, and the installation position of the embedded grouting pipe 7 is ensured.
The joint of the grouting pipe 71 and the paired wires 72 is wound with the electric adhesive tape 10 for sealing, and the paired wires 72 are in threaded connection with the pipe body 62, namely the upper ends of the paired wires 72 are in threaded connection in the pipe body 62, so that the installation and fixation of the embedded grouting pipe 7 and the movable flange 6 are ensured.
When the pre-buried grouting pipe 7 is manufactured, a phi 42mm grouting pipe 71 is adopted to extend upwards into the void area 3 from the fixed flange 5 until the top of the grouting pipe 71 abuts against a waterproof plate of a tunnel vault, the grouting pipe 71 with the corresponding length is cut according to the extending distance, and the length of the grouting pipe 71 is the distance between the waterproof plate and the trolley top die 1. Cutting of an overflow notch 8 is carried out at one end of the grouting pipe 71 by a cutting machine, the width of the overflow notch 8 is 5mm, the depth of the overflow notch 8 is 25mm, a wire pair 72 with the diameter of phi 32mm is welded at the other end of the grouting pipe 71, a welding seam generated by welding is ground by a polishing machine, and an electric adhesive tape 10 with the thickness of not less than 5mm and the width of not more than 30mm is wound at the position of the welding seam.
When the embedded grouting pipe 7 is installed, the butt wire 72 is gradually screwed into the pipe body 62 of the movable flange 6 until the grouting pipe 71 abuts against the limiting groove 9, at the moment, the lower end of the butt wire 72 is arranged outside the pipe body 62, the movable flange 6 is connected with the fixed method through bolts, the grouting pipe 71 abuts against a waterproof plate after connection is guaranteed, and the embedded grouting pipe 7 is installed in place.
And (4) completing the installation of the pre-buried grouting pipes 7 in the other two groups of grouting pieces according to the manufacturing and installation modes of the pre-buried grouting pipes 7.
The lower ends of the paired wires 72 of one group of grouting parts extend out of the pipe body 62 and are sequentially communicated with a valve 11, a connecting pipe 13 with a pressure gauge 12, a pipe joint 14, a grouting hose 15 and a grouting machine 16. The lower end of the paired threads 72 is in threaded connection with the valve 11, and the valve 11 is tightly propped against the lower end of the pipe body 62, so that the embedded grouting pipe 7 can be prevented from moving up and down.
And the height difference exists at the two ends of the gob 3, so that a slope bottom 17 and a slope top 18 are respectively formed at the two ends of the gob 3, and the slope bottom 17 is close to the trolley end die 2. In the grouting construction operation, concrete is poured to fill the void area 3, and additives such as a water reducing agent are added into the pumping concrete to reduce the water cement ratio, improve the fluidity and reduce shrinkage cavities. And (3) carrying out top punching construction on the concrete from the position of the pouring hole 4, adopting a flat vibrator to assist vibration to help the concrete to be compact, sequentially observing three groups of grouting components from the slope bottom 17 to the slope top 18, wherein grout flows out from the lower end of the counter wire 72, and observing the pouring condition from the trolley end mold 2, thereby judging that the concrete is fully poured.
After the concrete is initially set, namely before the strength of the secondary lining concrete reaches 5MPa and demoulding is prepared, the pouring with the mould is arranged. The grouting machine 16 is firstly communicated with the embedded grouting pipe 7 close to the slope bottom 17, and the grouting machine 16 is a special grouting machine with a mold at the vault and integrates pulping, slurry storage and grouting.
The grouting machine 16 is used for preparing the slurry, the slurry adopts the grouting material with micro-expansion performance, the volume stability is good, the sedimentation and delamination are reduced, and the good combination of the gap and the concrete is avoided. After the grouting machine 16 prepares grout, grouting is started from the embedded grouting pipe 7 close to the slope bottom 17, and the valve 11 is closed after observation is carried out from the embedded grouting pipe 7 in the middle of the trolley top die 1 until the grout flows out. Grouting is started from the embedded grouting pipe 7 positioned in the middle of the trolley top die 1, observation is carried out on the embedded grouting pipe 7 close to the slope top 18 until grout flows out, and then the valve 11 is closed. And finally, starting grouting from the embedded grouting pipe 7 close to the top 18 of the slope until thick slurry flows out of the trolley end mold 2 for 3-5 seconds.
And sequentially grouting the three embedded grouting pipes 7 from the slope bottom 17 to the slope top 18, and observing the grout outlet condition of the next embedded grouting pipe 7 and the grout outlet condition of the trolley end mould 2 to complete integral strip mould grouting. And in the grouting process, observing the pressure of a pressure gauge 12, and if the grouting pressure of the embedded grouting pipe 7 reaches 1MPa and the next embedded grouting pipe 7 does not discharge slurry, moving to the next embedded grouting pipe 7 for grouting until normal slurry flows out of the end mould and other slurry outlets.
The utility model discloses an original two lining platform trucks utilize slip casting machine 16 in time to restore the concrete defect as the rack, carry out the slip casting reinforcement before two lining drawing of patterns during the construction, do not occupy normal construction process, avoid cross operation, two lining concrete intensity reach 5MPa after before the drawing of patterns, the slip casting material that adopts the expansion performance utilizes pre-buried slip casting pipe 7 to carry out hole-by-hole slip casting, is favorable to compensating the shrink.
The utility model discloses make two backing back rear cavities obtain radical cure, solved two lining qualities of coming to nothing and go ill to make the follow-up construction in relatively stable environment in tunnel, reduced tunnel construction safety risk, improved two lining life in tunnel, ensured traffic safety. Quality and safety accidents do not occur in the whole construction process, and the social benefit is remarkable.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the present invention, so that equivalent changes or modifications made by the structure, features and principles of the present invention should be included in the claims of the present invention.
Claims (5)
1. The tunnel vault void belt mold grouting system comprises a secondary lining trolley arranged in a tunnel, wherein the secondary lining trolley comprises a trolley top mold (1) and a trolley end mold (2), and is characterized in that three groups of grouting pieces and pouring holes (4) are alternately arranged on the trolley top mold (1), and the pouring holes (4) and the grouting pieces penetrate through the trolley top mold (1);
each group of grouting pieces comprises a fixed flange (5) welded on the lower wall of the trolley top die (1), a movable flange (6) connected below the fixed flange (5) through bolts and a pre-buried grouting pipe (7) arranged between the fixed flange (5) and the movable flange (6) in a penetrating mode, each movable flange (6) comprises a tray body (61) and a pipe body (62) which are arranged in a T shape, and a limiting groove (9) is formed in each tray body (61);
the embedded grouting pipe (7) comprises a grouting pipe (71) and a pair wire (72) welded at the lower end of the grouting pipe (71), the upper end of the grouting pipe (71) penetrates through the trolley top die (1) and abuts against the arch crown of the tunnel, a cross overflow notch (8) is formed in the upper end of the grouting pipe (71), the joint of the grouting pipe (71) and the pair wire (72) is in a boss shape and abuts against a limiting groove (9), an electric adhesive tape (10) is wound at the joint of the grouting pipe (71) and the pair wire (72) for sealing, and the pair wire (72) is in threaded connection with the pipe body (62);
the lower end of the wire pair (72) extends out of the pipe body (62) and is sequentially communicated with a valve (11), a connecting pipe (13) with a pressure gauge (12), a pipe joint (14), a grouting hose (15) and a grouting machine (16).
2. The system for grouting with a mould for the emptying of a tunnel vault according to claim 1, characterized in that a void (3) is present between said trolley top mould (1) and the tunnel vault;
the three groups of grouting parts are arranged at intervals along the tunneling direction of the tunnel, a pouring hole (4) is formed in the trolley top die (1) between every two adjacent groups of grouting parts, and the pouring hole (4) and the grouting parts are communicated with the inside and the outside of the void area (3).
3. The tunnel vault emptying belt mould grouting system according to claim 2, wherein two groups of grouting pieces are respectively 0.75m away from the end part of the trolley top mould (1), and the other group of grouting pieces are positioned in the middle of the trolley top mould (1);
the two pouring holes (4) are respectively 2.25m away from the end part of the trolley top die (1).
4. The tunnel vault emptying tape casting system according to claim 1, wherein said fixed flange (5) is disc-shaped, a plurality of screws are welded to the lower end of the fixed flange (5) in the circumferential direction, said disc body (61) is arranged on the plurality of screws, and nuts are connected on the screws to fasten the movable flange (6);
and a sealing gasket is arranged between the fixed flange (5) and the movable flange (6).
5. The tunnel vault emptying belt mold grouting system according to claim 1, wherein said limiting groove (9) is circular, and the grouting pipe (71) abuts against the limiting groove (9) to prevent downward movement;
the wire aligning (72) is a circular tube structure with external threads arranged at two ends, the upper end of the wire aligning (72) is connected into the tube body (62) in a threaded mode, the lower end of the wire aligning (72) is connected with the valve (11) in a threaded mode, and the valve (11) is tightly abutted to the lower end of the tube body (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221155955.0U CN217582152U (en) | 2022-05-16 | 2022-05-16 | Tunnel vault is come to nothing and is taken mould slip casting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221155955.0U CN217582152U (en) | 2022-05-16 | 2022-05-16 | Tunnel vault is come to nothing and is taken mould slip casting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217582152U true CN217582152U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221155955.0U Active CN217582152U (en) | 2022-05-16 | 2022-05-16 | Tunnel vault is come to nothing and is taken mould slip casting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217582152U (en) |
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2022
- 2022-05-16 CN CN202221155955.0U patent/CN217582152U/en active Active
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