CN108316950A - Tunnel vault concrete belt mould backfills filling system and its grouting method - Google Patents
Tunnel vault concrete belt mould backfills filling system and its grouting method Download PDFInfo
- Publication number
- CN108316950A CN108316950A CN201810221721.3A CN201810221721A CN108316950A CN 108316950 A CN108316950 A CN 108316950A CN 201810221721 A CN201810221721 A CN 201810221721A CN 108316950 A CN108316950 A CN 108316950A
- Authority
- CN
- China
- Prior art keywords
- backfill
- grouting
- pipe
- backfill grouting
- secondary lining
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Abstract
The invention discloses a kind of tunnel vault concrete belt mould backfill filling system and its grouting method, solve that equipment investment existing for existing backfill grouting mode is more, and long in time limit and region of coming to nothing backfills the uncompacted problem of slip casting.In secondary lining trolley（6）Vault on be provided with backfill grouting port（7）, backfill Grouting Pipe（1）End pass through ring flange（8）After be inserted into backfill grouting port in, the port for backfilling Grouting Pipe is waterproof layer of the topstick in once lining（5）On, in cross slip casting groove（3）Outside be wound with raw material band（2）, raw material band is pasted on the nozzle of backfill Grouting Pipe；It is provided with pressure sensor in the lower end nozzle of backfill Grouting Pipe（13）, branch sleeve is connected on the lower end nozzle of backfill Grouting Pipe（16）, feed pipe for mortar is connected in the lower end of branch sleeve（18）And grouting pump, 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 filling system, more particularly to a kind of secondary lining coagulation
The filling system and its grouting method that soil perfusion and backfill slip casting are disposably completed.
Background technology
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
Carry out trolley Side Template closure, secondary lining trolley and once lining, which are formed by arcuate gap, to be closed, then, 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 manually observing, the perfusion situation of concrete in the gap of arch is estimated, when arcuate gap perfusion is full
Afterwards, the perfusion for stopping concrete removing secondary lining trolley formwork, by trolley after the secondary lining concrete final set being perfused
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, since filling concrete applies from high to lower, the concrete ratio at secondary lining trolley abutment wall position
It is more closely knit, but formation cavity is easy above secondary lining trolley vault, that is, phenomenon of coming to nothing, the prior art is to pass through geological radar
To coming to nothing what region was detected, to the cavity in the secondary lining concrete that detects, disappeared by way of backfilling slip casting
Except region of coming to nothing, specific way is：Rack is set up 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, grouting equipment is connected 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
It starches using single slurry or dual slurry, single slurry slip casting match ratio is：Cement is 1 with water：1, dual slurry slip casting match ratio is：Cement
Than waterglass it is 1 than water:1:0.75, both match ratios are big in the presence of solidification after-contraction, and setting rate is fast, is easy to cause note
The slurry contraction solidified after slurry causes secondary gap.
Invention content
The present invention provides a kind of tunnel vault concrete belt mould backfill filling 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 filling system, including once lining, are provided with waterproof layer in once lining,
It is provided with secondary lining trolley immediately below once lining, two are perfused between the vault and waterproof layer of secondary lining trolley
Secondary lining concrete, the secondary lining concrete above the vault of secondary lining trolley and is provided with cavity between waterproof layer,
It is provided with backfill grouting port on the vault of secondary lining trolley, is provided with ring flange on backfill grouting port, backfills Grouting Pipe
End by be inserted into after ring flange backfill grouting port in, the port for backfilling Grouting Pipe is waterproof layer of the topstick in once lining
On, there is cross slip casting groove in the end set of backfill Grouting Pipe, raw material are wound on the outside of cross slip casting groove
Band is pasted with raw material band in backfill Grouting Pipe nozzle；It is provided with pressure sensor, pressure in the lower end nozzle of backfill Grouting Pipe
Sensor is linked together by transmission line and pressure display instrument table, and connector sleeve is connected on the lower end nozzle of backfill Grouting Pipe
Cylinder, feed pipe for mortar is connected in branch sleeve lower end, is provided with into slurry control valve in branch sleeve, feed pipe for mortar is connected to grouting pump
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, proportioning is：Cement：Water：Bentonite：
Retarder=1：1：0.25：0.25.
A kind of tunnel vault concrete belt mould backfill grouting construction method, includes the following steps：
The first step makes backfill Grouting Pipe, and in the end set cross slip casting groove of backfill Grouting Pipe, is used in combination raw material band will
The cross slip casting groove and backfill Grouting Pipe nozzle of setting paste；
Second step, after once lining reaches normal intensity and completes waterproof layer and applies, by secondary lining trolley navigate to this one
Immediately below secondary lining cutting, ring flange is installed on the backfill grouting port being arranged on the vault of secondary lining trolley, the first step is manufactured
The end of good backfill Grouting Pipe is inserted by ring flange in backfill grouting port, and makes backfill slip casting pipe port topstick primary
On the waterproof layer of lining cutting, 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 concrete is perfused；
4th step, the early strong retardation setting type of configuration microdilatancy backfill grouting serous fluid, and the early strong retardation setting type grouting serous fluid match ratio of microdilatancy is：
Cement：Water：Bentonite：Retarder=1：1：0.25：0.25；
5th step, after secondary lining concrete final set, by backfilling the Grouting Pipe backfill grouting serous fluid that has configured the 4th step
It is injected into the cavity between waterproof layer and secondary lining trolley exterior sheathing；
6th step, in backfilling grouting serous fluid injection process, compartment of terrain is collected overflows in the end die slot gap of secondary lining trolley
Grouting serous fluid is backfilled, the concentration for the backfill grouting serous fluid that the concentration of the backfill grouting serous fluid of spilling and the 4th step have configured is carried out
Comparison, when the concentration of the backfill grouting serous fluid of spilling is identical as the backfill concentration of grouting serous fluid that the 4th step has configured, eventually
Non-return fills out the slip casting of 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 branch sleeve is connected on the lower end nozzle of backfill Grouting Pipe, is connected in branch sleeve lower end
There is feed pipe for mortar, is provided with into slurry control valve in branch sleeve, pressure display instrument table is observed during injection backfills injection slurry
Upper shown grouting pressure value makes the grouting pressure value of the nozzle of backfill 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 of backfill Grouting Pipe 1 is made to be maintained at 1.0MPa hereinafter, being filled in prevent non-return
There is 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 uniform, it is non-
Often be conducive to lining concrete and administer vault cavity, ensures the thickness of Tunnel Second Lining.The present invention is by optimizing 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.
Description of the drawings
Fig. 1 is the structural schematic diagram for implementing the present invention；
Fig. 2 is the attachment structure schematic diagram of the backfill Grouting Pipe of the present invention.
Specific implementation mode
The present invention is described in detail below in conjunction with the accompanying drawings：
A kind of tunnel vault concrete belt mould backfill filling system, including once lining 4, waterproof is provided in once lining 4
Layer 5, is provided with secondary lining trolley 6, between the vault and waterproof layer 5 of secondary lining trolley 6 in the underface of once lining 4
It is perfused with secondary lining concrete 9, between the secondary lining concrete 9 above the vault of secondary lining trolley 6 and waterproof layer 5
It is provided with cavity 11, backfill grouting port 7 is provided on the vault of secondary lining trolley 6, method is provided on backfill grouting port 7
Blue disk 8, the end for backfilling Grouting Pipe 1 are inserted by ring flange 8 in backfill grouting port 7, and the port of backfill Grouting Pipe 1 is topstick
On the waterproof layer 5 of once lining, there is cross slip casting groove 3 in the end set of backfill Grouting Pipe 1, in cross slip casting
The outside of groove 3 is wound with raw material band 2, it is pasted with raw material band 2 in backfill 1 nozzle of Grouting Pipe；In the lower end of backfill Grouting Pipe 1
Pressure sensor 13 is provided in nozzle, pressure sensor 13 is linked together by transmission line 14 and pressure display instrument table 15,
It is connected with branch sleeve 16 on the lower end nozzle of backfill Grouting Pipe 1, feed pipe for mortar 18 is connected in 16 lower end of branch sleeve, even
Female connector cylinder 16 is provided with into slurry control valve 17, and feed pipe for mortar 18 links together with grouting pump, and backfill note is provided in grouting pump
Starch slurries.
The backfill grouting serous fluid that grouting serous fluid is the early strong retardation setting type of microdilatancy is backfilled, proportioning is：Cement：Water：Bentonite：
Retarder=1：1：0.25：0.25.
A kind of tunnel vault concrete belt mould backfill grouting construction method, includes the following steps：
The first step makes backfill Grouting Pipe 1, and in the end set cross slip casting groove 3 of backfill Grouting Pipe 1, raw material is used in combination
The cross slip casting groove 3 of setting and backfill 1 nozzle of Grouting Pipe are pasted with 2；
Second step, after once lining 4 reaches normal intensity and completes waterproof layer 5 and applies, secondary lining trolley 6 is navigated to this
Immediately below 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 step system
The end for the backfill Grouting Pipe 1 made is inserted by ring flange 8 in backfill grouting port 7, and makes 1 port topstick of backfill Grouting Pipe
It is fixed on ring flange 8 on the waterproof layer 5 of once lining, and by 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 concrete is perfused；
4th step, the match ratio of the early strong retardation setting type backfill grouting serous fluid of microdilatancy are：Cement：Water：Bentonite：Retarder=1：1：
0.25：0.25；
5th step, after secondary lining 9 final set of concrete, backfill microdilatancy morning for having been configured the 4th step by backfilling Grouting Pipe
Strong type slow setting slurries are injected into the cavity 11 between waterproof layer 5 and secondary lining trolley exterior sheathing 10；
6th step, in backfilling grouting serous fluid injection process, compartment of terrain is collected overflows in the end die slot gap 12 of secondary lining trolley 6
Backfill grouting serous fluid, the concentration for backfilling grouting serous fluid that the concentration of the backfill grouting serous fluid of spilling and the 4th step have been configured into
Row comparison, when the concentration of the backfill grouting serous fluid of spilling is identical as the backfill concentration of grouting serous fluid that the 4th step has configured,
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, branch 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 with into slurry control valve 17 in branch sleeve 16, in the process of injection backfill injection slurry
Shown grouting pressure value, makes the grouting pressure value of the nozzle of backfill Grouting Pipe 1 be less than on middle observation pressure display instrument table 15
1.0MPa adjusts slip casting pump pressure, the nozzle pressure of backfill Grouting Pipe 1 is made to be maintained at if grouting pressure is more than 1.0MPa
There is the explosion of feed pipe for mortar 18 in the process hereinafter, filling in slurry to prevent non-return in 1.0MPa.
The present invention waits for lining cutting by the way that backfill Grouting Pipe, optimization backfill slip casting pipe connecting structure are arranged at the top of lining trolley
After rushing to summit, using backfill injection slurry of the slip casting all-in-one machine with the early strong retardation setting type of mould high pressure injection microdilatancy, slip casting is improved
Tooling and technique, substantially overcome the resistance of the resistance of ducting and slurries vertical transport of low ratio of water to material slurry, 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 fully closely knit
With safe and reliable effect.
Claims (3)
1. a kind of tunnel vault concrete belt mould backfills filling system, including once lining（4）, in once lining（4）Upper setting
There is waterproof layer（5）, in once lining（4）Underface be provided with secondary lining trolley（6）, in secondary lining trolley（6）Arch
Top and waterproof layer（5）Between be perfused with secondary lining concrete（9）, in secondary lining trolley（6）Vault above secondary lining
Building concrete（9）With waterproof layer（5）Between be provided with cavity（11）, which is characterized in that in secondary lining trolley（6）Vault on
It is provided with backfill grouting port（7）, in backfill grouting port（7）On be provided with ring flange（8）, backfill Grouting Pipe（1）End pass through
Ring flange（8）After be inserted into backfill grouting port（7）In, backfill Grouting Pipe（1）Port be waterproof layer of the topstick in once lining
（5）On, in backfill Grouting Pipe（1）End set have cross slip casting groove（3）, in cross slip casting groove（3）It is outer
Side is wound with raw material band（2）, in backfill Grouting Pipe（1）Nozzle on be pasted with raw material band（2）；In backfill Grouting Pipe（1）Under
It is provided with pressure sensor in end pipe mouth（13）, pressure sensor（13）Pass through transmission line（14）With pressure display instrument table（15）Even
It is connected together, in backfill Grouting Pipe（1）Lower end nozzle on be connected with branch sleeve（16）, in branch sleeve（16）Lower end connect
It is connected to feed pipe for mortar（18）, in branch sleeve（16）On be provided with into slurry control valve（17）, feed pipe for mortar（18）It is connected to grouting pump
Together, backfill grouting serous fluid is provided in grouting pump.
2. a kind of tunnel vault concrete belt mould according to claim 1 backfills filling system, which is characterized in that backfill note
The backfill grouting serous fluid that slurries are the early strong retardation setting type of microdilatancy is starched, proportioning is：Cement：Water：Bentonite：Retarder=1：1：
0.25：0.25.
3. a kind of tunnel vault concrete belt mould backfills grouting construction method, include the following steps：
The first step makes backfill Grouting Pipe（1）, and in backfill Grouting Pipe（1）End set cross slip casting groove（3）, and
Use raw material band（2）By the cross slip casting groove of setting（3）And backfill Grouting Pipe（1）Nozzle paste；
Second step works as once lining（4）Reach normal intensity, and completes waterproof layer（5）After applying, by secondary lining trolley（6）
Navigate to the once lining（4）Underface, in secondary lining trolley（6）Vault on the backfill grouting port that is arranged（7）Upper peace
Fill ring flange（8）, backfill Grouting Pipe that the first step has been manufactured（1）End pass through ring flange（8）It is inserted into backfill grouting port
（7）In, and make backfill Grouting Pipe（1）Port topstick once lining waterproof layer（5）On, backfill is noted by flange bolt
Slurry pipe（1）It is fixed on ring flange（8）On；
Third walks, in secondary lining trolley（6）Vault low side filling concrete mouth on connect concrete grouting pipe, carry out two
Secondary lining concrete perfusion；
The backfill grouting serous fluid of 4th step, the early strong retardation setting type of configuration microdilatancy, the grouting serous fluid cooperation of the early strong retardation setting type of microdilatancy
Than for：Cement：Water：Bentonite：Retarder=1：1：0.25：0.25；
5th step, when secondary lining concrete（9）After final set, starched by backfilling the backfill slip casting that Grouting Pipe has configured the 4th step
Liquid is injected into waterproof layer（5）With secondary lining trolley exterior sheathing（10）Between cavity（11）In；
6th step, in backfilling grouting serous fluid injection process, compartment of terrain collect secondary lining trolley（6）End die slot gap（12）In
The concentration of the backfill grouting serous fluid of spilling is backfilled the dense of grouting serous fluid by the backfill grouting serous fluid of spilling with what the 4th step had configured
Degree is compared, until the concentration of the backfill grouting serous fluid of spilling is identical as the backfill concentration of grouting serous fluid that the 4th step has configured
When, terminate the slip casting of backfill grouting serous fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810221721.3A CN108316950A (en) | 2018-03-18 | 2018-03-18 | Tunnel vault concrete belt mould backfills filling system and its grouting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810221721.3A CN108316950A (en) | 2018-03-18 | 2018-03-18 | Tunnel vault concrete belt mould backfills filling system and its grouting method |
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| Publication Number | Publication Date |
|---|---|
| CN108316950A true CN108316950A (en) | 2018-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810221721.3A Pending CN108316950A (en) | 2018-03-18 | 2018-03-18 | Tunnel vault concrete belt mould backfills filling system and its grouting method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404015A (en) * | 2018-12-10 | 2019-03-01 | 中交公局桥隧工程有限公司 | A kind of vault band mould grouting construction process |
| CN109505633A (en) * | 2019-01-15 | 2019-03-22 | 北京市市政工程研究院 | Lining cutting behind guide pipe grouting for water blocking device and construction method for shaly formation |
| CN109707411A (en) * | 2019-03-04 | 2019-05-03 | 中铁十六局集团有限公司 | A kind of technique of tunnel grouting construction |
| CN110469346A (en) * | 2019-08-23 | 2019-11-19 | 中铁十一局集团第五工程有限公司 | The anti-visualized forward direction of coming to nothing of tunnel vault concrete is rushed to summit construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404015A (en) * | 2018-12-10 | 2019-03-01 | 中交公局桥隧工程有限公司 | A kind of vault band mould grouting construction process |
| CN109505633A (en) * | 2019-01-15 | 2019-03-22 | 北京市市政工程研究院 | Lining cutting behind guide pipe grouting for water blocking device and construction method for shaly formation |
| CN109505633B (en) * | 2019-01-15 | 2024-03-29 | 北京市市政工程研究院 | Lining back guide pipe grouting water plugging device for muddy stratum and construction method |
| CN109707411A (en) * | 2019-03-04 | 2019-05-03 | 中铁十六局集团有限公司 | A kind of technique of tunnel grouting construction |
| CN110469346A (en) * | 2019-08-23 | 2019-11-19 | 中铁十一局集团第五工程有限公司 | The anti-visualized forward direction of coming to nothing of tunnel vault concrete is rushed to summit construction method |
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