CN208252125U - Tunnel vault concrete belt mould backfills grouting system - Google Patents
Tunnel vault concrete belt mould backfills grouting system Download PDFInfo
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- CN208252125U CN208252125U CN201820363956.1U CN201820363956U CN208252125U CN 208252125 U CN208252125 U CN 208252125U CN 201820363956 U CN201820363956 U CN 201820363956U CN 208252125 U CN208252125 U CN 208252125U
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- grouting
- backfill
- pipe
- backfill grouting
- secondary lining
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Abstract
The utility model discloses a kind of tunnel vault concrete belt moulds to backfill grouting system, and it is more to solve equipment investment existing for existing backfill grouting mode, and long in time limit and region of coming to nothing backfills the uncompacted problem of slip casting.Backfill grouting port (7) is provided on the vault of secondary lining trolley (6), the end of backfill Grouting Pipe (1) after ring flange (8) by being inserted into backfill grouting port, the port for backfilling Grouting Pipe is topstick on the waterproof layer (5) of once lining, it is wound with raw material band (2) on the outside of cross slip casting groove (3), is pasted with raw material band on the nozzle of backfill Grouting Pipe；Pressure sensor (13) are provided in the lower end nozzle of backfill Grouting Pipe, connection sleeve (16) is connected on the lower end nozzle of backfill Grouting Pipe, it is connected with feed pipe for mortar (18) and grouting pump in the lower end of connection sleeve, backfill grouting serous fluid is provided in grouting pump.Realize the defect for farthest eliminating secondary lining vault cavity.
Description
Technical field
The present invention relates to a kind of Tunnel Second Lining concrete backfill grouting system, in particular to a kind of secondary lining coagulation
The grouting system and its grouting method that soil perfusion and backfill slip casting are disposably completed.
Background technique
In constructing tunnel, after country rock excavates, supporting steel frame is installed on section country rock interface first, then sprays coagulation
Soil forms once lining, and splash guard is carried out after once lining reaches normal intensity and is applied, after splash guard applies completion, by two
Secondary lining trolley is opened into place.In the vault of secondary lining trolley, it is typically provided with filling concrete mouth and backfill grouting port, is mixed
Solidifying soil perfusing hole is typically provided with 2, is separately positioned on the front-end and back-end of trolley vault.After secondary lining trolley is in place, first
The closure of trolley Side Template is carried out, secondary lining trolley is formed by arcuate gap closing with once lining and is fallen, then, is being in
Filling concrete pipe is connected on the filling concrete mouth of low level, and the concrete of secondary lining is perfused by filling concrete pipe,
In filling process, by the way of artificial observation, the perfusion situation of concrete in the gap of arch is estimated, when arcuate gap perfusion is full
Afterwards, the perfusion for stopping concrete after the secondary lining concrete final set wait be perfused, removes secondary lining trolley formwork, by trolley
Move to next plate Second Lining Construction position.Since filling concrete is the totally-enclosed arcuate gap on the outside of secondary lining vault
Middle progress, the concrete ratio since filling concrete applies from high to lower, at secondary lining trolley abutment wall position
It is more closely knit, but the cavity easy to form above secondary lining trolley vault, that is, phenomenon of coming to nothing, the prior art are to pass through geological radar
To coming to nothing what region was detected, to the cavity in the secondary lining concrete detected, disappeared by way of backfilling slip casting
Except region of coming to nothing, specific way is: setting up rack below region of coming to nothing, the secondary grouting by the rack in region of coming to nothing serves as a contrast
Injected hole is set on block, connects grouting equipment on the injected hole, region carries out backfill injecting treatment to coming to nothing, in slip casting process
Middle observation grouting equipment pressure change, stops slip casting when grouting pressure reaches 0.5MPa, and observes under pressure gauge indicates whether
Drop, if in 10 minutes pressure gauge instruction have no drop to 0.4MPa hereinafter, if can terminate slip casting；If drop to 0.4MPa with
Under, then continue slip casting.This backfill injecting treatment method there are equipment investments more, long in time limit defect；In addition, existing backfill note
Slurry uses single slurry or dual slurry, single slurry slip casting match ratio are as follows: cement is 1:1, dual slurry slip casting match ratio are as follows: cement with water
It than waterglass is 1:1:0.75 than water, both match ratios have that solidification after-contraction is big, and setting rate is fast, is easy to cause note
The slurry contraction solidified after slurry causes secondary gap.
Summary of the invention
The present invention provides a kind of tunnel vault concrete belt mould backfill grouting system and its grouting methods, solve existing
It is more to backfill equipment investment existing for grouting mode, the long in time limit and region backfill uncompacted technical problem of slip casting of coming to nothing.
The present invention is to solve the above technical problem by the following technical programs:
A kind of tunnel vault concrete belt mould backfill grouting system, including once lining, are provided with anti-in once lining
Water layer is provided with secondary lining trolley immediately below once lining, fills between the vault and waterproof layer of secondary lining trolley
It is marked with secondary lining concrete, the secondary lining concrete above the vault of secondary lining trolley and is provided between waterproof layer
Cavity is provided with backfill grouting port on the vault of secondary lining trolley, and ring flange, backfill note are provided on backfill grouting port
By being inserted into backfill grouting port after ring flange, the port for backfilling Grouting Pipe is topstick in the anti-of once lining for the end of slurry pipe
On water layer, the end of backfill Grouting Pipe is provided with cross slip casting groove, is wound on the outside of cross slip casting groove
Raw material band is pasted with raw material band in backfill Grouting Pipe nozzle；It is provided with pressure sensor in the lower end nozzle of backfill Grouting Pipe,
Pressure sensor is linked together by transmission line and pressure display instrument table, is connected on the lower end nozzle of backfill Grouting Pipe
Female connector cylinder is connected with feed pipe for mortar in connection sleeve lower end, is provided in connection sleeve into slurry control valve, feed pipe for mortar and grouting pump connect
It is connected together, backfill grouting serous fluid is provided in grouting pump.
The backfill grouting serous fluid that grouting serous fluid is the early strong retardation setting type of microdilatancy is backfilled, proportion are as follows: cement: water: bentonite:
Retarder=1:1:0.25:0.25.
A kind of tunnel vault concrete belt mould backfill grouting construction method, comprising the following steps:
The first step, production backfill Grouting Pipe, and cross slip casting groove is set in the end of backfill Grouting Pipe, and use raw material
Band pastes the cross slip casting groove of setting and backfill Grouting Pipe nozzle；
Second step, after once lining reaches normal intensity and completes waterproof layer and apply, secondary lining trolley is navigated to
Immediately below the once lining, ring flange is installed on the backfill grouting port being arranged on the vault of secondary lining trolley, by the first step
The end of the backfill Grouting Pipe manufactured is inserted into backfill grouting port by ring flange, and backfill slip casting pipe port topstick is made to exist
On the waterproof layer of once lining, and it is fixed on ring flange by flange bolt by Grouting Pipe is backfilled；
Third step connects concrete grouting pipe on the filling concrete mouth of the vault low side of secondary lining trolley, carries out
Secondary lining filling concrete；
4th step, the early strong retardation setting type of configuration microdilatancy backfill grouting serous fluid, the early strong retardation setting type grouting serous fluid cooperation of microdilatancy
Than are as follows: cement: water: bentonite: retarder=1:1:0.25:0.25；
5th step, after secondary lining concrete final set, by backfill Grouting Pipe by the configured backfill slip casting of the 4th step
Slurries are injected into the cavity between waterproof layer and secondary lining trolley exterior sheathing；
6th step, backfill grouting serous fluid injection process in, compartment of terrain collect secondary lining trolley end die slot gap in overflow
Backfill grouting serous fluid out, by the concentration of the concentration of the backfill grouting serous fluid of spilling and the configured backfill grouting serous fluid of the 4th step
It compares, until the concentration of the backfill grouting serous fluid of spilling is identical as the configured backfill concentration of grouting serous fluid of the 4th step
When, terminate the slip casting of backfill grouting serous fluid.
By in the lower end nozzle of pressure sensor setting to backfill Grouting Pipe, and by the transmission line and pressure of pressure sensor
Display instrument links together, and is connected with connection sleeve on the lower end nozzle of backfill Grouting Pipe, connects in connection sleeve lower end
There is feed pipe for mortar, is provided in connection sleeve into slurry control valve, pressure display instrument table is observed during injection backfills injection slurry
Upper shown grouting pressure value makes the grouting pressure value for backfilling the nozzle of Grouting Pipe 1 be less than 1.0MPa, if grouting pressure is more than
When 1.0MPa, slip casting pump pressure is adjusted, the nozzle pressure for backfilling Grouting Pipe 1 is made to be maintained at 1.0MPa hereinafter, filling in prevent non-return
Occurs feed pipe for mortar explosion during slurry.
The present invention synchronously completes secondary lining filling concrete and backfill grouting with plunger, by secondary lining trolley top
Portion opens up backfill grouting port, the grouting serous fluid with the early strong retardation setting type of mould high pressure injection microdilatancy, the early strong retardation setting type slip casting of microdilatancy
Slurries have good mobility and aid pumpability, and bleeding is not shunk, and intensity is high after condensation, when having longer construct
Between, excellent self-leveling energy；It is good with concrete bonding performance, while the reaction of high-performance injecting paste material hydration heat is uniformly, it is non-
Often be conducive to lining concrete and administer vault cavity, ensures the thickness of Tunnel Second Lining.The present invention passes through optimization backfill note
The device of slurry, grouting construction process, the early strong retardation setting type grouting serous fluid of microdilatancy, realize and farthest eliminate secondary lining arch
The defect in head space hole；Microdilatancy early-strength retardation setting type is implemented using higher grouting pressure using the support of secondary lining trolley
Grouting serous fluid, backfill slip casting are closely knit, reliable.
Detailed description of the invention
Fig. 1 is to implement structural schematic diagram of the invention；
Fig. 2 is the attachment structure schematic diagram of backfill Grouting Pipe of the invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawing:
A kind of tunnel vault concrete belt mould backfill grouting system, including once lining 4, are provided in once lining 4
Waterproof layer 5 is provided with secondary lining trolley 6 in the underface of once lining 4, in the vault and waterproof layer 5 of secondary lining trolley 6
Between be perfused with secondary lining concrete 9, the secondary lining concrete 9 above the vault of secondary lining trolley 6 and waterproof layer 5
Between be provided with cavity 11, be provided on the vault of secondary lining trolley 6 backfill grouting port 7, backfill grouting port 7 on be arranged
There is ring flange 8, the end of backfill Grouting Pipe 1 is inserted into backfill grouting port 7 by ring flange 8, and the port of backfill Grouting Pipe 1 is
Topstick is provided with cross slip casting groove 3 on the waterproof layer 5 of once lining, in the end of backfill Grouting Pipe 1, in cross
The outside of slip casting groove 3 is wound with raw material band 2, is pasted with raw material band 2 in backfill 1 nozzle of Grouting Pipe；In the case where backfilling Grouting Pipe 1
Pressure sensor 13 is provided in end pipe mouth, pressure sensor 13 is connected to one by transmission line 14 and pressure display instrument table 15
It rises, connection sleeve 16 is connected on the lower end nozzle of backfill Grouting Pipe 1, be connected with feed pipe for mortar 18 in connection 16 lower end of sleeve,
It is provided in connection sleeve 16 into slurry control valve 17, feed pipe for mortar 18 links together with grouting pump, is provided with back in grouting pump
Fill out grouting serous fluid.
The backfill grouting serous fluid that grouting serous fluid is the early strong retardation setting type of microdilatancy is backfilled, proportion are as follows: cement: water: bentonite:
Retarder=1:1:0.25:0.25.
A kind of tunnel vault concrete belt mould backfill grouting construction method, comprising the following steps:
The first step, production backfill Grouting Pipe 1, and cross slip casting groove 3 is set in the end of backfill Grouting Pipe 1, it is used in combination
Raw material band 2 pastes the cross slip casting groove 3 of setting and backfill 1 nozzle of Grouting Pipe；
Second step, after once lining 4 reaches normal intensity and completes waterproof layer 5 and apply, secondary lining trolley 6 is positioned
To immediately below the once lining 4, ring flange 8 is installed on the backfill grouting port 7 being arranged on the vault of lining trolley 4, by first
The end for walking the backfill Grouting Pipe 1 manufactured is inserted into backfill grouting port 7 by ring flange 8, and makes to backfill 1 port of Grouting Pipe
Topstick is fixed on ring flange 8 on the waterproof layer 5 of once lining, and through flange bolt by Grouting Pipe 1 is backfilled；
Third step connects concrete grouting pipe on the filling concrete mouth of the vault low side of secondary lining trolley 6, carries out
Secondary lining filling concrete；
The match ratio of 4th step, the early strong retardation setting type backfill grouting serous fluid of microdilatancy are as follows: cement: water: bentonite: retarder=
1:1:0.25:0.25；
5th step, after secondary lining 9 final set of concrete, by backfill Grouting Pipe by the 4th step it is configured backfill it is micro- swollen
Swollen early-strength slow setting slurries are injected into the cavity 11 between waterproof layer 5 and secondary lining trolley exterior sheathing 10；
6th step, backfill grouting serous fluid injection process in, compartment of terrain collect secondary lining trolley 6 end die slot gap 12 in
The backfill grouting serous fluid of spilling, by the dense of the configured backfill grouting serous fluid of the concentration for backfilling grouting serous fluid and the 4th step of spilling
Degree compares, until the concentration of the backfill grouting serous fluid of spilling is identical as the configured backfill concentration of grouting serous fluid of the 4th step
When, terminate the slip casting of backfill grouting serous fluid.
By in the lower end nozzle of the setting of pressure sensor 13 to backfill Grouting Pipe 1, and by the transmission line of pressure sensor 14
It links together with pressure display instrument table 15, connection sleeve 16 is connected on the lower end nozzle of backfill Grouting Pipe 1, in connector sleeve
16 lower ends of cylinder are connected with feed pipe for mortar 18, are provided in connection sleeve 16 into slurry control valve 17, in the process of injection backfill injection slurry
Shown grouting pressure value, is less than the grouting pressure value for the nozzle for backfilling Grouting Pipe 1 on middle observation pressure display instrument table 15
1.0MPa adjusts slip casting pump pressure if grouting pressure is more than 1.0MPa, is maintained at the nozzle pressure for backfilling Grouting Pipe 1
There is the explosion of feed pipe for mortar 18 hereinafter, filling in slurry to prevent non-return in the process in 1.0MPa.
The present invention at the top of lining trolley by being arranged backfill Grouting Pipe, optimization backfill slip casting pipe connecting structure, to lining cutting
After rushing to summit, the backfill injection slurry of the early strong retardation setting type of microdilatancy is injected with mould high pressure using slip casting all-in-one machine, improves slip casting
Tooling and technique substantially overcome the resistance of ducting of low ratio of water to material slurry and the resistance of slurries vertical transport, and it is anti-to permeate blocking
Water plate is damaged, has the function of to repair secondary lining vault cavity and water blockoff；Backfill slip casting is supported to connect using secondary lining trolley
Structure implements low ratio of water to material grout material slip casting using higher grouting pressure, and the timely backfill in cavity 11 is made to reach sufficiently closely knit
With safe and reliable effect.
Claims (1)
1. a kind of tunnel vault concrete belt mould backfills grouting system, including once lining (4), it is arranged on once lining (4)
There are waterproof layer (5), is provided with immediately below once lining (4) secondary lining trolley (6), the arch in secondary lining trolley (6)
Secondary lining concrete (9) are perfused between top and waterproof layer (5), the secondary lining above the vault of secondary lining trolley (6)
Empty (11) are provided between building concrete (9) and waterproof layer (5), which is characterized in that on the vault of secondary lining trolley (6)
It is provided with backfill grouting port (7), is provided with ring flange (8) in backfill grouting port (7), the end of backfill Grouting Pipe (1) passes through
It is inserted into after ring flange (8) in backfill grouting port (7), the port of backfill Grouting Pipe (1) is waterproof layer of the topstick in once lining
(5) on, the end of backfill Grouting Pipe (1) is provided with cross slip casting groove (3), in the outer of cross slip casting groove (3)
Side is wound with raw material band (2), is pasted with raw material band (2) on the nozzle of backfill Grouting Pipe (1)；In the case where backfilling Grouting Pipe (1)
It is provided in end pipe mouth pressure sensor (13), pressure sensor (13) is connected by transmission line (14) and pressure display instrument table (15)
It is connected together, connection sleeve (16) is connected on the lower end nozzle of backfill Grouting Pipe (1), connect in the lower end of connection sleeve (16)
Feed pipe for mortar (18) are connected to, are provided in connection sleeve (16) into slurry control valve (17), feed pipe for mortar (18) is connected to grouting pump
Together, backfill grouting serous fluid is provided in grouting pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820363956.1U CN208252125U8 (en) | 2018-03-18 | 2018-03-18 | Tunnel vault concrete belt mould backfills grouting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820363956.1U CN208252125U8 (en) | 2018-03-18 | 2018-03-18 | Tunnel vault concrete belt mould backfills grouting system |
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| Publication Number | Publication Date |
|---|---|
| CN208252125U true CN208252125U (en) | 2018-12-18 |
| CN208252125U8 CN208252125U8 (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820363956.1U Active CN208252125U8 (en) | 2018-03-18 | 2018-03-18 | Tunnel vault concrete belt mould backfills grouting system |
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| CN (1) | CN208252125U8 (en) |
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- 2018-03-18 CN CN201820363956.1U patent/CN208252125U8/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CU01 | Correction of utility model patent | ||
| CU01 | Correction of utility model patent |
Correction item: Address of the patentee Correct: 36 Shenbei Road, Shenyang New District, Shenyang City, Liaoning Province False: 36 Shenbei Road, Shenbei New District, Liaoyang City, Liaoning Province Number: 51-01 Volume: 34 Correction item: Address of the patentee Correct: 36 Shenbei Road, Shenyang New District, Shenyang City, Liaoning Province False: 36 Shenbei Road, Shenbei New District, Liaoyang City, Liaoning Province Number: 51-01 Page: The title page Volume: 34 |