CN207944956U - Prevent the device that Tunnel Second Lining vault comes to nothing - Google Patents
Prevent the device that Tunnel Second Lining vault comes to nothing Download PDFInfo
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- CN207944956U CN207944956U CN201820322534.XU CN201820322534U CN207944956U CN 207944956 U CN207944956 U CN 207944956U CN 201820322534 U CN201820322534 U CN 201820322534U CN 207944956 U CN207944956 U CN 207944956U
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- lining
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Abstract
The utility model provides a kind of device that prevention Tunnel Second Lining vault comes to nothing, and is equipped with grout pipe and exhaust pipe along the position of vault in secondary lining, multiple grout holes are equipped in grout pipe；The slip casting nozzle of grout pipe and the exhaust pipe mouth of exhaust pipe are drawn out to except the bottom of secondary lining.After Second Lining Construction, after concrete reaches some strength, pump is connect with slip casting nozzle, carries out vault slip casting；After grouting pressure reaches preset value or exhaust pipe mouth pulp, stop slip casting；It is achieved in the prevention that Tunnel Second Lining vault comes to nothing.The device of the utility model is simple and practical, safety easy for construction, and secondary lining concrete vault can effectively be avoided to come to nothing, and also avoids the occurrence of the cavity after grouting or the crack caused by back-grouting, the air of keystone fully can be discharged in filling process.Slip casting synchronous with Second Lining Construction can carry out, and without individually setting up operation platform, more traditional mortar depositing construction is more convenient.
Description
Technical field
The utility model is related to lining construction field, especially a kind of dress for preventing Tunnel Second Lining vault and coming to nothing
It sets.
Background technology
During constructing tunnel, it is that preliminary bracing is done to tunnel top first in the prior art, then guarded drainage is set
Plate finally pours secondary lining concrete.The shrinking percentage of influence and concrete itself due to tunnel concrete constructional deficiency, tunnel
Road vault pour two lining concrete and splash guard between inevitably will appear gap even cavity, due to air in cavity
The effect of expanding with heat and contract with cold, secondary lining concrete can be made crack occur when serious, lead to tunnel top leak, give subsequent tunnel
It is open to traffic and has buried security risk, especially leak influences bigger, security risk caused by the constructing tunnels such as high-speed railway power grid
It is more serious.
204098928 U of Chinese patent literature CN describe the pre-buried dress of positioning of Grouting Pipe before a kind of tunnel vault two serves as a contrast
It sets, disk and supporting rack is fixedly connected on two lining trolleys, adjust sieve bar and two lining trolleys is passed through to be withstood on positioning disk with terminal pad, it is fixed
Position disk is equipped with sealing shroud by screwed connection Grouting Pipe, Grouting Pipe with supporting rack intersection, and top plate is fixedly mounted in Grouting Pipe top,
Slip casting inside pipe wall is equipped with exhaust pipe.But party's pattern slip point is less, slurries flow distance is longer, and there are air not to be completely exhausted out
And the situation that exhaust pipe blocks.The supporting rack being especially arranged（1）Cavity also needs the later stage to block, and labor intensity is higher.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of device for coming to nothing of prevention Tunnel Second Lining vault,
It can prevent Tunnel Second Lining vault to come to nothing, secondary lining concrete is avoided the defects of crack occur.
In order to solve the above technical problems, technical solution used by the utility model is：A kind of prevention Tunnel Second Lining
The device that vault comes to nothing is equipped with grout pipe and exhaust pipe along the position of vault in secondary lining, multiple fillings is equipped in grout pipe
Starch hole；
The slip casting nozzle of grout pipe and the exhaust pipe mouth of exhaust pipe are drawn out to except the bottom of secondary lining.
In preferred scheme, it is equipped with preliminary bracing at the top of secondary lining, the bottom of supporting in the early stage is installed with anti-row
Water plate, grout pipe and exhaust pipe are installed in the bottom of drainable waterproofing plate.
In preferred scheme, geotextiles are equipped between drainable waterproofing plate and preliminary bracing.
In preferred scheme, the slip casting nozzle of grout pipe is connected by pipeline and pump, and pressure is equipped on pipeline and presets valve,
Pressure is preset valve and is also connect with slurry storage tank by return duct.
In preferred scheme, the pressure is preset in valve, and the grout outlet that pressure presets valve is connect with grout pipe, and pressure is pre-
If the stock inlet of valve is connected by pipeline and pump, pressure is preset and is additionally provided with the circulation port come round with grout outlet and stock inlet on valve,
Piston is equipped in circulation port, the side wall of circulation port is connect by by-pass prot with loop exit, and loop exit is connect with return duct；
Circulation port is threadedly coupled with adjusting bolt, and spring is equipped between adjusting bolt and piston.
In preferred scheme, the pressure is preset in valve, and the grout outlet that pressure presets valve is connect with grout pipe, and pressure is pre-
If the stock inlet of valve is connected by pipeline and pump, pressure is preset and is additionally provided with the circulation port communicated with grout outlet and stock inlet on valve,
Piston is equipped in circulation port, the side wall of circulation port is connect by by-pass prot with loop exit, and loop exit is connect with return duct；
Press rods are additionally provided with, the valve seat that press rods one end presets valve with pressure is hinged, and the other end is located at piston far from pulp
Mouthful one end, be equipped with hole close to the position at middle part in press rods, adjusting bolt is threadedly coupled with hole, adjusting bolt and press rods it
Between be equipped with spring.
In preferred scheme, supporting embedded anchor cone and ut socket are embedded in supporting in the early stage, it is pre- in secondary lining
It is embedded with secondary lining embedded anchor cone；
Ut socket is threadedly coupled with supporting embedded anchor cone and secondary lining embedded anchor cone.
A kind of construction method of the device to be come to nothing using above-mentioned prevention Tunnel Second Lining vault, is included the following steps：
Drainable waterproofing plate is bonded in the bottom keystone of preliminary bracing, by grout pipe after s1, in the early stage supporting construction
The bottom keystone of drainable waterproofing plate is bonded in along tunnel axis with exhaust pipe, slip casting nozzle and exhaust pipe mouth are drawn out to secondary lining
Except the design bottom of block；
S2, after Second Lining Construction, after concrete reaches some strength, pump is connect with slip casting nozzle, is encircleed
Teeming is starched；
S3, after grouting pressure reaches preset value or exhaust pipe mouth pulp, stop slip casting；
The prevention that Tunnel Second Lining vault comes to nothing is realized by above step.
In preferred scheme, the default grouting pressure is 0.15 ~ 0.3Mpa；
The aperture of grout hole is 6 ~ 8mm, outer wall interlaced arrangement of the grout hole in grout pipe；
Pressure is adjusted before slip casting presets the grouting pressure of valve to preset value.
In preferred scheme, the injecting paste material uses M20 cement mortar or cement mortar, mechanical mixing, consistency control
Between 14s~18s；
Grout pipe and exhaust pipe are bonding with drainable waterproofing plate using hot melt adhesive bonding；
Pre-buried supporting embedded anchor cone and ut socket when supporting in the early stage, ut socket setting block, and preliminary bracing is completed
Afterwards, ut socket is found, geotextiles are set, are open in geotextiles, removes closure, secondary lining embedded anchor cone is installed, then
The template of secondary lining is set again.
A kind of device for preventing Tunnel Second Lining vault and coming to nothing provided by the utility model, has below beneficial to effect
Fruit：
1, the device of the utility model is simple and practical, safety easy for construction, can effectively avoid secondary lining concrete arch
Top is come to nothing, and the cavity after grouting or the crack caused by back-grouting are also avoided the occurrence of.
2, the air of keystone fully can be discharged in filling process for the utility model, ensure that institute's injection slurry is complete
Vault is enriched, effectively prevent vault to come to nothing, more closely knit compared with traditional secondary lining cutting slip casting, effect is more preferable, greatly improves construction quality.
3, it synchronous with Second Lining Construction can be carried out when device carries out vault slip casting, without individually setting up operation platform, compared with
Traditional mortar depositing construction is more convenient.
Description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and examples：
Fig. 1 is the tunnel vault position cross-sectional view of the utility model.
Fig. 2 is the A-A schematic cross-sectional views of Fig. 1.
Fig. 3 is the structural schematic diagram of the utility model preferred embodiment.
Fig. 4 is the main structure diagram that pressure presets valve in the utility model.
Fig. 5 is the overlooking structure diagram that pressure presets valve in the utility model.
In figure：Grout pipe 1, grout hole 101, exhaust pipe 2, scar 3, geotextiles 4, drainable waterproofing plate 5, come to nothing layer 6, initial stage branch
Shield 7, secondary lining 8, slip casting nozzle 9, exhaust pipe mouth 10, secondary lining embedded anchor cone 11, ut socket 12, supporting embedded anchor cone
13, quick coupling 14, pressure presets valve 15, grout outlet 151, stock inlet 152, circulation port 153, piston 154, press rods 155, bullet
Spring 156, adjusting bolt 157, loop exit 158, by-pass prot 159, return duct 16, screw pump 17, retarder 18, motor 19, storage
Stock tank 20.
Specific implementation mode
Embodiment 1：
In Fig. 1,2, a kind of device for preventing Tunnel Second Lining vault and coming to nothing, in secondary lining 8 along the position of vault
Grout pipe 1 and exhaust pipe 2 have been installed, multiple grout holes 101 are equipped in grout pipe 1；
The slip casting nozzle 9 of grout pipe 1 and the exhaust pipe mouth 10 of exhaust pipe 2 are drawn out to except the bottom of secondary lining 8.Thus
Structure is in the milk by slip casting nozzle 9, and cement mortar or cement mortar are from 101 overflow of grout hole, and the air of the layer 6 that comes to nothing is from exhaust pipe
Mouthfuls 10 are discharged, and the layer 6 that makes to come to nothing is filled closely knit.In preferred scheme, the air inlet mouth of pipe of exhaust pipe 2 is located at close to the position of exhaust pipe 2
It sets.Grout pipe 1 and exhaust pipe 2 are using diameter 42mmPVC pipes.
In preferred scheme such as Fig. 1,2, preliminary bracing 7, the bottom of supporting in the early stage 7 are equipped at the top of secondary lining 8
It is installed with drainable waterproofing plate 5, grout pipe 1 and exhaust pipe 2 are installed in the bottom of drainable waterproofing plate 5, in this example, will be in the milk using hot melt adhesive
Pipe 1 and exhaust pipe 2 are welded on the bottom of drainable waterproofing plate 5.The guarded drainage protection board of setting can be effectively protected 8 He of secondary lining
Waterproof layer.Avoid tunnel vault leak.Drainable waterproofing plate 5 in this example uses porous ultra-high molecular weight polyethylene (HDPE) material.
In preferred scheme such as Fig. 1,2, geotextiles 4 are equipped between drainable waterproofing plate 5 and preliminary bracing 7.Geotextiles 4 play
Waterproof, seepage control acts on.
Embodiment 2：
On the basis of embodiment 1, in preferred scheme such as Fig. 3, the slip casting nozzle 9 of grout pipe 1 passes through pipeline and connects with pump
It connects, pressure is equipped on pipeline and presets valve 15, pressure is preset valve 15 and also connect with slurry storage tank 20 by return duct 16.For being in the milk
Pump generally use screw pump 17, motor 19 is connect by retarder 18 with screw pump 17, but controlled grouting pressure is very
Difficult.It is used in this example and presets valve 15 for the pressure of cement mortar or cement mortar, after grouting pressure reaches preset value,
Pressure presets valve 15 and cement mortar or cement mortar is flow back to slurry storage tank 20 by return duct 16, to avoid grouting pressure from crossing ambassador
8 concrete rupture of secondary lining.
In preferred scheme such as Fig. 3 ~ 5, the pressure is preset in valve 15, and pressure presets grout outlet 151 and the filling of valve 15
It starches pipe 1 to connect, the stock inlet 152 that pressure presets valve 15 is connected by pipeline and pump, and pressure is preset to be additionally provided with and pulp on valve 15
The circulation port 153 that mouth 151 and stock inlet 152 are come round, is equipped with piston 154 in circulation port 153, and the side wall of circulation port 153 passes through
By-pass prot 159 is connect with loop exit 158, and loop exit 158 is connect with return duct 16；
Circulation port 153 is threadedly coupled with adjusting bolt 157, and spring 156 is equipped between adjusting bolt 157 and piston 154.By
This structure, by the pressure of 157 adjustment spring 156 of adjusting bolt, the pressure opened to regulating piston 154.Referring to Fig. 3,4,5
In, when grouting pressure is more than preset value, cement mortar or cement mortar push 154 uplink of piston, until circulation port 153 and by-pass prot
159 connections, cement mortar or cement mortar are discharged into slurry storage tank 20 from return duct 16.Structure in this example, particularly suitable for cement mortar or
The grouting pressure of cement mortar controls, and structure is not easy to block, it is preferred that the valve seat that pressure presets valve 15 is additionally provided with and by-pass prot
The plug of 159 alignment can also remove plug cleaning even if by-pass prot 159 blocks.
Embodiment 3：
On the basis of embodiment 2, in preferred scheme such as Fig. 3 ~ 5, the pressure is preset in valve 15, and pressure presets valve
15 grout outlet 151 is connect with grout pipe 1, and the stock inlet 152 that pressure presets valve 15 is connected by pipeline and pump, and pressure presets valve
It is additionally provided with the circulation port 153 communicated with grout outlet 151 and stock inlet 152 on 15, piston 154, cycle are equipped in circulation port 153
The side wall in hole 153 is connect by by-pass prot 159 with loop exit 158, and loop exit 158 is connect with return duct 16；
Press rods 155 are additionally provided with, the valve seat that 155 one end of press rods presets valve 15 with pressure is hinged, and the other end is located at piston
154 one end far from grout outlet 151 are equipped with hole in press rods 155 close to the position at middle part, and adjusting bolt 157 connects with hole screw thread
It connects, spring 156 is equipped between adjusting bolt 157 and press rods 155.Due to implementing in the scheme in 2, the adjustable model of spring 156
It encloses smaller, the scheme of press rods 155 is used in this example, in Fig. 5, press rods 155 are arranged in a slot, and one end is used for
The position of piston 154 is limited, and using hinge joint as centre swinging.Since spring 156 is positioned close to the position at 155 middle part of press rods
It sets, the pressure regulation spectrum increase that pressure presets valve 15 connects by about one time.It is equipped in the position that press rods 155 are contacted with spring 156
Bulb, thus structure, is convenient for limiting the position of spring.
Embodiment 4：
On the basis of embodiment 1 ~ 3, in preferred scheme such as Fig. 3, supporting embedded anchor cone is embedded in supporting in the early stage 7
13 and ut socket 12, secondary lining embedded anchor cone 11 is embedded in secondary lining 8；
Ut socket 12 is threadedly coupled with supporting embedded anchor cone 13 and secondary lining embedded anchor cone 11.In preferred scheme,
The supporting embedded anchor cone 13 and secondary lining embedded anchor cone 11 is located at the position of non-vault, supporting embedded anchor cone 13 and secondary
Lining cutting embedded anchor cone 11 has the structure of bending.Thus structure can improve the tensile stress of 8 concrete of secondary lining, avoid
There is crack under grouting pressure.So that the layer 6 that comes to nothing in the utility model can bear higher grouting pressure, such as 0.2
Mpa or more.
Embodiment 5：
A kind of construction method for the device that prevention Tunnel Second Lining vault using described in above-described embodiment comes to nothing, packet
Include following steps：
Drainable waterproofing plate 5 is bonded in the bottom keystone of preliminary bracing 7 after s1, in the early stage supporting construction, will be in the milk
Pipe 1 and exhaust pipe 2 are bonded in the bottom keystone of drainable waterproofing plate 5, grout pipe 1 and exhaust pipe 2 and guarded drainage along tunnel axis
The bonding of plate 5 is bonded using hot melt adhesive；
Slip casting nozzle 9 and exhaust pipe mouth 10 are drawn out to except the design bottom of secondary lining 8；
The aperture of grout hole 101 is 6 ~ 8mm, outer wall interlaced arrangement of the grout hole 101 in grout pipe 1；
S2, after Second Lining Construction, after concrete reaches some strength, pump is connect with slip casting nozzle 9, is encircleed
Teeming is starched；
In preferred scheme, the injecting paste material uses M20 cement mortar or cement mortar, mechanical mixing, consistency control
Between 14s~18s；Pressure is adjusted before slip casting presets the grouting pressure of valve 15 to preset value.
In preferred scheme, the default grouting pressure is 0.15 ~ 0.3Mpa；
S3, after grouting pressure reaches 10 pulp of preset value or exhaust pipe mouth, stop slip casting；
The prevention that Tunnel Second Lining vault comes to nothing is realized by above step.
In preferred scheme, when supporting 7 in the early stage pre-buried supporting embedded anchor cone 13 and ut socket 12, ut socket 12 set
Closure is set, after the completion of preliminary bracing 7, ut socket 12 is found, geotextiles 4 is set, is open in geotextiles 4, removes closure, pacify
Secondary lining embedded anchor cone 11 is filled, then the template of secondary lining 8 is set by lining trolley again.
The above embodiments are only the optimal technical scheme of the utility model, and are not construed as the limit for the utility model
System, the features in the embodiments and the embodiments of the present application in the absence of conflict, mutually can be combined arbitrarily.This practicality is new
Technical characteristic in the technical solution that the protection domain of type should be recorded with claim, including the technical solution of claim record
Equivalents are protection domain.Equivalent replacement i.e. within this range is improved, also the scope of protection of the utility model it
It is interior.
Claims (7)
1. a kind of device for preventing Tunnel Second Lining vault and coming to nothing, it is characterized in that：In secondary lining（8）Along the position of vault
Equipped with grout pipe（1）And exhaust pipe（2）, in grout pipe（1）Equipped with multiple grout holes（101）；
Grout pipe（1）Slip casting nozzle（9）And exhaust pipe（2）Exhaust pipe mouth（10）It is drawn out to secondary lining（8）Bottom it
Outside.
2. a kind of device for preventing Tunnel Second Lining vault and coming to nothing according to claim 1, it is characterized in that：In secondary lining
It builds（8）Top be equipped with preliminary bracing（7）, supporting in the early stage（7）Bottom be installed with drainable waterproofing plate（5）, grout pipe（1）And row
Tracheae（2）It is installed in drainable waterproofing plate（5）Bottom.
3. a kind of device for preventing Tunnel Second Lining vault and coming to nothing according to claim 2, it is characterized in that：In guarded drainage
Plate（5）With preliminary bracing（7）Between be equipped with geotextiles（4）.
4. a kind of device for preventing Tunnel Second Lining vault and coming to nothing according to claim 1 or 2, it is characterized in that：Grouting
Pipe（1）Slip casting nozzle（9）It is connected by pipeline and pump, pressure is equipped on pipeline and presets valve（15）, pressure presets valve（15）
Also pass through return duct（16）With slurry storage tank（20）Connection.
5. a kind of device for preventing Tunnel Second Lining vault and coming to nothing according to claim 4, it is characterized in that：The pressure
Power presets valve（15）In, pressure presets valve（15）Grout outlet（151）With grout pipe（1）Connection, pressure preset valve（15）Into
Starch mouth（152）It is connected by pipeline and pump, pressure presets valve（15）On be additionally provided with and grout outlet（151）And stock inlet（152）Think
Logical circulation port（153）, in circulation port（153）It is interior to be equipped with piston（154）, circulation port（153）Side wall pass through by-pass prot（159）
With loop exit（158）Connection, loop exit（158）With return duct（16）Connection；
Circulation port（153）With adjusting bolt（157）It is threadedly coupled, adjusting bolt（157）With piston（154）Between be equipped with spring
（156）.
6. a kind of device for preventing Tunnel Second Lining vault and coming to nothing according to claim 4, it is characterized in that：The pressure
Power presets valve（15）In, pressure presets valve（15）Grout outlet（151）With grout pipe（1）Connection, pressure preset valve（15）Into
Starch mouth（152）It is connected by pipeline and pump, pressure presets valve（15）On be additionally provided with and grout outlet（151）And stock inlet（152）Phase
Logical circulation port（153）, in circulation port（153）It is interior to be equipped with piston（154）, circulation port（153）Side wall pass through by-pass prot（159）
With loop exit（158）Connection, loop exit（158）With return duct（16）Connection；
It is additionally provided with press rods（155）, press rods（155）Valve is preset with pressure in one end（15）Valve seat it is hinged, the other end, which is located at, lives
Plug（154）Far from grout outlet（151）One end, in press rods（155）Position close to middle part is equipped with hole, adjusting bolt（157）
It is threadedly coupled with hole, adjusting bolt（157）With press rods（155）Between be equipped with spring（156）.
7. a kind of device for preventing Tunnel Second Lining vault and coming to nothing according to claim 2, it is characterized in that：It props up in the early stage
Shield（7）Inside it is embedded with supporting embedded anchor cone（13）And ut socket（12）, in secondary lining（8）It is pre-buried to be inside embedded with secondary lining
Anchor cone（11）；
Ut socket（12）With supporting embedded anchor cone（13）With secondary lining embedded anchor cone（11）It is threadedly coupled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820322534.XU CN207944956U (en) | 2018-03-09 | 2018-03-09 | Prevent the device that Tunnel Second Lining vault comes to nothing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820322534.XU CN207944956U (en) | 2018-03-09 | 2018-03-09 | Prevent the device that Tunnel Second Lining vault comes to nothing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207944956U true CN207944956U (en) | 2018-10-09 |
Family
ID=63697693
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820322534.XU Active CN207944956U (en) | 2018-03-09 | 2018-03-09 | Prevent the device that Tunnel Second Lining vault comes to nothing |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252726A (en) * | 2018-03-09 | 2018-07-06 | 中交第二航务工程局有限公司 | The device and its construction method that prevention Tunnel Second Lining vault comes to nothing |
| CN112593978A (en) * | 2020-12-04 | 2021-04-02 | 浙大城市学院 | Secondary lining vault anti-disengaging device and construction method |
| CN116122850A (en) * | 2022-08-12 | 2023-05-16 | 武汉容晟吉美科技有限公司 | Grouting method for reinforcing steel ring to prevent air drum |
-
2018
- 2018-03-09 CN CN201820322534.XU patent/CN207944956U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108252726A (en) * | 2018-03-09 | 2018-07-06 | 中交第二航务工程局有限公司 | The device and its construction method that prevention Tunnel Second Lining vault comes to nothing |
| CN108252726B (en) * | 2018-03-09 | 2024-03-08 | 中交第二航务工程局有限公司 | Device for preventing tunnel secondary lining vault from emptying and construction method thereof |
| CN112593978A (en) * | 2020-12-04 | 2021-04-02 | 浙大城市学院 | Secondary lining vault anti-disengaging device and construction method |
| CN112593978B (en) * | 2020-12-04 | 2023-04-07 | 浙大城市学院 | Secondary lining vault anti-disengaging device and construction method |
| CN116122850A (en) * | 2022-08-12 | 2023-05-16 | 武汉容晟吉美科技有限公司 | Grouting method for reinforcing steel ring to prevent air drum |
| CN116122850B (en) * | 2022-08-12 | 2024-02-20 | 武汉精隧科技有限公司 | Grouting method for reinforcing steel ring to prevent air drum |
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