CN107701200A - A kind of section of jurisdiction crack restorative procedure - Google Patents
A kind of section of jurisdiction crack restorative procedure Download PDFInfo
- Publication number
- CN107701200A CN107701200A CN201710969354.0A CN201710969354A CN107701200A CN 107701200 A CN107701200 A CN 107701200A CN 201710969354 A CN201710969354 A CN 201710969354A CN 107701200 A CN107701200 A CN 107701200A
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- CN
- China
- Prior art keywords
- crack
- section
- jurisdiction
- fragmentation
- area
- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- 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
Abstract
The invention provides a kind of section of jurisdiction crack restorative procedure, it comprises the following steps：Preparation of construction, the crack everywhere and fragmentation area on section of jurisdiction are searched along shield tunnel, and throughout identification label is done in crack and fragmentation area；Multiple circular holes, hole depth 10 15cm, aperture 1.0cm, pitch-row 30cm are drilled with crack；It is embedded with grout pipe in each circular hole, and with the seam face of strong adhesive dead-end fracture so that grout pipe overlays closely with circular hole；Grout pipe is buried along the uniform brushing epoxy interfacial agents in crack everywhere, and using high-early (strength) cement, pressure is filled out close；Successively the grout pipe in each circular hole apply and fill epoxy slurry slip casting reparation, it is 0.6 0.8Mpa to apply and fill pressure；The grout pipe in each circular hole is carried out successively secondary or grouting is repeated several times, it is ensured that slip casting effect；In fragmentation area, epoxy resin mortar filling and repairing is used along the area of fragmentation everywhere, reaches fragmentation area repairing effect.
Description
Technical field
The present invention relates to the field of reinforcement of shield tunnel, and in particular to a kind of section of jurisdiction crack restorative procedure.
Background technology
Guangzhou Underground No.1 line yellow sand~long-lived road section is shield tunnel section, and the foundation ditch and pile foundation of project construction are tight
Adjacent station and running tunnel.Since in January, 2011, find descending in 10 points~12 points of K5+400~K5+483 tunnel tops
Position (towards yellow sand station) place section of jurisdiction longitudinal crack is more, and crackle is up to 4 on indivedual sections of jurisdiction, most of penetration of cracks monoblock sections of jurisdiction,
Maximum crack width is about close to 0.58mm；Up 12 points~3 point position (facing yellow sand station) place section of jurisdiction at K5+411~K5+480
Most of to have longitudinal crack, crack site is substantially distributed with downlink in mirror image.12 points~1 point position section of jurisdiction is opened wherein at K5+440
What is split more serious, maximum crack width about 0.5mm.Totally 72, up crack, descending 53, crack, 125 altogether.
Because yellow long shield tunnel section is in major injury state, in order to ensure the operation of Subway Line 1 and multiply
The objective security of the lives and property, the crack of section of jurisdiction need to be repaired.
The content of the invention
It is an object of the present invention to provide a kind of section of jurisdiction crack restorative procedure, the section of jurisdiction crack restorative procedure construction period
It is short, easy to operate and good for the consolidation effect of shield tunnel.
Based on this, the present invention proposes a kind of section of jurisdiction crack restorative procedure, and it comprises the following steps：
1) preparation of construction, the crack everywhere and fragmentation area on section of jurisdiction, and throughout crack and broken are searched along shield tunnel
Do identification label in split plot；
2) multiple circular holes, hole depth 10-15cm, aperture 1.0cm, pitch-row 30cm are drilled with crack；
3) it is embedded with grout pipe in each circular hole, and with the seam face of strong adhesive dead-end fracture so that grout pipe and circle
Pore pressure is adjacent to close；
4) along the uniform brushing epoxy interfacial agents in crack everywhere, and grout pipe is buried using high-early (strength) cement, pressure is filled out close；
5) successively the grout pipe in each circular hole apply and fill epoxy slurry slip casting reparation, it is 0.6- to apply and fill pressure
0.8Mpa；
6) grout pipe in each circular hole is carried out successively secondary or grouting is repeated several times, it is ensured that slip casting effect；
7) in fragmentation area, epoxy resin mortar filling and repairing is used along the area of fragmentation everywhere, reaches fragmentation area repairing effect.
Further, in step 5), when the grouting in epoxy grouting does not play pressure, then it is 0.6-1.1's to use the ratio of mud instead
Stability cement mortar carries out applying filling, applies and fills pressure 0.1-0.2Mpa, after reaching pressure value, then changes and fills the compound filling of epoxy slurry progress
Slurry.
Further, when crack or fragmentation area everywhere concentrate on umbrella arch position, during away from contact net 20cm or so, pipe is carried out
Before piece repairing construction, after contact net first should being carried out into the measure of adequately protecting, section of jurisdiction repairing construction is just carried out.
Further, in step 7), when carrying out epoxy resin mortar filling and repairing in the fragmentation area of the shield tunnel, will repair
The fragmentation area at place polishes flat, is closely knit and without hollowing.
Further, the fragmentation area takes additional anchor measure.
Further, the anchor measure is multiple M8 expansion bolts, and anchorage length is more than or equal to 10cm.
Further, the area in the fragmentation area is more than 0.3m2When, steel wire need to be hung in the fragmentation area.
Further, in step 7), the composition proportion of the epoxy resin mortar is epoxy resin:Cement:Dry sand=1:
1.5-2:3-4。
Implement the embodiment of the present invention, have the advantages that：
The section of jurisdiction crack restorative procedure of the present invention is primarily directed at the crack on shield tunnel and fragmentation area, by splitting
By drilling at seam, then epoxy slurry is injected in circular hole, and epoxy resin mortar is filled in fragmentation area, to complete to shield tunnel
Repairing and reinforcing at the fragmentation area in road and crack, it is difficult in maintenance during due to occurring crack or fragmentation position on shield tunnel, hold very much
The service life of shield tunnel is easily had influence on, and the section of jurisdiction crack restorative procedure of the present invention targetedly will appear from crack very much
Or the reparation at fragmentation position is complete, the service life of whole shield tunnel is improved, meanwhile, the section of jurisdiction crack restorative procedure construction
Cycle is short, easy to operate, and good for the consolidation effect of shield tunnel, improves the structural strength of whole shield tunnel, and
Provided convenience for follow-up reinforcing operating method.
Brief description of the drawings
Fig. 1 is the process chart of restorative procedure of the embodiment of the present invention.
Fig. 2 is the structural representation after shield tunnel of the embodiment of the present invention is reinforced.
In figure：1st, shield tunnel, 2, at crack, 3, fragmentation area, 4, epoxy resin mortar, 5, epoxy slurry.
Embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawings and examples：
As shown in Figure 1 to Figure 2, the section of jurisdiction crack restorative procedure in the present embodiment, it comprises the following steps：
1) preparation of construction, along shield tunnel 1 search on section of jurisdiction everywhere 2 and fragmentation area 3 at crack, and throughout crack
Upper identification label is done with fragmentation area；
2) 2 at the crack on be drilled with multiple circular holes, hole depth 10-15cm, aperture 1.0cm, pitch-row 30cm；
3) it is embedded with grout pipe in each circular hole, and with the seam face of strong adhesive dead-end fracture so that grout pipe and circle
Pore pressure is adjacent to close；
4) along the uniform brushing epoxy interfacial agents in crack everywhere, and grout pipe is buried using high-early (strength) cement, pressure is filled out close；
5) successively the grout pipe in each circular hole apply and fill the slip casting reparation of epoxy slurry 5, it is 0.6- to apply and fill pressure
0.8Mpa；
6) grout pipe in each circular hole is carried out successively secondary or grouting is repeated several times, it is ensured that slip casting effect；
7) in fragmentation area, the filling and repairing of epoxy resin mortar 4 is used along the area of fragmentation everywhere, reaches fragmentation area repairing effect.
Based on above technical scheme, section of jurisdiction crack restorative procedure of the invention is primarily directed to the crack on shield tunnel 1
Place 2 and fragmentation area 3, by by drilling, then injecting epoxy slurry 4 in circular hole at crack 2, and filled out in fragmentation area 2
Epoxy resin mortar 4 is filled, to complete at fragmentation area 3 and the crack to shield tunnel 2 repairing and reinforcing, due to going out on shield tunnel 1
It is difficult in maintenance when existing crack or fragmentation position, it is easy to have influence on the service life of shield tunnel, and the section of jurisdiction crack of the present invention
Restorative procedure targetedly will appear from crack very much or the reparation at fragmentation position is complete, improve making for whole shield tunnel 1
With the life-span, meanwhile, the section of jurisdiction crack restorative procedure short construction period is easy to operate and good for the consolidation effect of shield tunnel 1
It is good, the structural strength of whole shield tunnel 1 is improved, is also provided convenience for follow-up reinforcing operating method.
In the present embodiment, the repair process specific operation process of shield tunnel 1 described in step 3) is：In shield tunnel
1 fragmentation area 3 carries out the filling and repairing of epoxy resin mortar 4, and 2 injection epoxy slurries 5 are repaired at the crack of shield tunnel 1, are led to
Filling epoxy resin mortar 4 and injection epoxy slurry 52 progress repairing and reinforcing at the fragmentation area 3 and crack to shield tunnel 1 respectively are crossed,
So as to improve the structural strength of whole shield tunnel 1, and repairing position is polished flat, consequently facilitating aryl fiber cloth hereafter
Paste operation.Further, in order to improve the structural strength of epoxy resin mortar 3, the composition proportion of epoxy resin mortar 5 is epoxy resin:
Cement:Dry sand=1:1.5-2:3-4.
Further, in order to improve at fracture 2 repairing ability, in step 5), when the grouting in epoxy grouting does not rise
During pressure, then use the stability cement mortar that the ratio of mud is 0.6-1.1 instead and carry out applying filling, apply and fill pressure 0.1-0.2Mpa, reach pressure
After value, then change and fill epoxy slurry progress compound grouting.
Further, when everywhere at crack 2 or fragmentation area 3 concentrate on umbrella arch position, during away from contact net 20cm or so, enter
Before the repairing construction of row section of jurisdiction, after contact net first should being carried out into the measure of adequately protecting, section of jurisdiction repairing construction is just carried out.
Further,, will when carrying out 4 filling and repairing of epoxy resin mortar in the fragmentation area 3 of the shield tunnel 1 in step 7)
The fragmentation area 3 of mend polishes flat, closely knit and without hollowing.If necessary, also tackle the fragmentation area 3 and take additional anchor
Gu measure.The anchor measure is multiple M8 expansion bolts, and anchorage length is more than or equal to 10cm.The area in the fragmentation area 3
More than 0.3m2When, steel wire need to be hung in the fragmentation area 3, prevent the fragment in fragmentation area 3 from dropping, reinforce fragmentation area 3.
Further, in order to improve the structural strength of epoxy resin mortar 4, in step 7), the composition of the epoxy resin mortar 4 is matched somebody with somebody
Than for epoxy resin:Cement:Dry sand=1:1.5-2:3-4.
In summary, section of jurisdiction crack restorative procedure of the invention is primarily directed at the crack on shield tunnel 12 and fragmentation
Area 3, by by drilling, then injecting epoxy slurry 5 in circular hole at crack 2, and epoxy resin mortar is filled in fragmentation area 3
4, to complete at fragmentation area 3 and the crack to shield tunnel 12 repairing and reinforcing, due to there is crack or fragmentation on shield tunnel 1
It is difficult in maintenance during position, it is easy to the service life of shield tunnel is had influence on, and the section of jurisdiction crack restorative procedure of the present invention is very
It targetedly will appear from that the reparation in crack or fragmentation position is complete, improve the service life of whole shield tunnel 1, meanwhile,
The section of jurisdiction crack restorative procedure short construction period, it is easy to operate and good for the consolidation effect of shield tunnel 1, improve whole
The structural strength of individual shield tunnel 1, and provided convenience for follow-up reinforcing operating method.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and replacement can also be made, these improve and replaced
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of section of jurisdiction crack restorative procedure, it is characterised in that comprise the following steps：
1) preparation of construction, the crack everywhere and fragmentation area on section of jurisdiction, and throughout crack and fragmentation area are searched along shield tunnel
Do identification label；
2) multiple circular holes, hole depth 10-15cm, aperture 1.0cm, pitch-row 30cm are drilled with crack；
3) it is embedded with grout pipe in each circular hole, and with the seam face of strong adhesive dead-end fracture so that grout pipe and circular hole pressure
It is adjacent to close；
4) along the uniform brushing epoxy interfacial agents in crack everywhere, and grout pipe is buried using high-early (strength) cement, pressure is filled out close；
5) successively the grout pipe in each circular hole apply and fill epoxy slurry slip casting reparation, it is 0.6-0.8Mpa to apply and fill pressure；
6) grout pipe in each circular hole is carried out successively secondary or grouting is repeated several times, it is ensured that slip casting effect；
7) in fragmentation area, epoxy resin mortar filling and repairing is used along the area of fragmentation everywhere, reaches fragmentation area repairing effect.
2. section of jurisdiction crack as claimed in claim 1 restorative procedure, it is characterised in that in step 5), when the filling in epoxy grouting
When can not starching pressure, then use the stability cement mortar that the ratio of mud is 0.6-1.1 instead and carry out applying filling, apply and fill pressure 0.1-0.2Mpa, reach
To after pressure value, then change and fill epoxy slurry progress compound grouting.
3. section of jurisdiction crack as claimed in claim 1 restorative procedure, it is characterised in that crack or fragmentation area concentrate on tunnel when everywhere
Road crown position, during away from contact net 20cm or so, before carrying out section of jurisdiction repairing construction, contact net first should be carried out into the measure of adequately protecting
Afterwards, section of jurisdiction repairing construction is just carried out.
4. section of jurisdiction crack as claimed in claim 1 restorative procedure, it is characterised in that in step 7), in the shield tunnel
When fragmentation area carries out epoxy resin mortar filling and repairing, the fragmentation area of mend is polished flat, be closely knit and without hollowing.
5. section of jurisdiction crack as claimed in claim 4 restorative procedure, it is characterised in that take additional anchor to arrange in the fragmentation area
Apply.
6. section of jurisdiction crack as claimed in claim 5 restorative procedure, it is characterised in that the anchor measure is multiple M8 expanding screws
Bolt, anchorage length are more than or equal to 10cm.
7. section of jurisdiction crack as claimed in claim 5 restorative procedure, it is characterised in that the area in the fragmentation area is more than 0.3m2
When, steel wire need to be hung in the fragmentation area.
8. the section of jurisdiction crack restorative procedure as described in any one of claim 1 to 7, it is characterised in that in step 7), the ring
The composition proportion of oxygen mortar is epoxy resin:Cement:Dry sand=1:1.5-2:3-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969354.0A CN107701200A (en) | 2017-10-16 | 2017-10-16 | A kind of section of jurisdiction crack restorative procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710969354.0A CN107701200A (en) | 2017-10-16 | 2017-10-16 | A kind of section of jurisdiction crack restorative procedure |
Publications (1)
| Publication Number | Publication Date |
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| CN107701200A true CN107701200A (en) | 2018-02-16 |
Family
ID=61181366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710969354.0A Pending CN107701200A (en) | 2017-10-16 | 2017-10-16 | A kind of section of jurisdiction crack restorative procedure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184739A (en) * | 2018-09-30 | 2019-01-11 | 山东建筑大学 | A kind of in-situ rapid renovation and characterization processes for tunnel scene section of jurisdiction damage zone |
| CN110258276A (en) * | 2019-06-21 | 2019-09-20 | 上海申继交通科技有限公司 | A kind of micro- table breakage quick maintenance method of concrete road surface |
| CN111097914A (en) * | 2018-10-26 | 2020-05-05 | 浙江久恒光电科技有限公司 | Method for repairing defects of nickel-based superalloy casting |
| CN111608687A (en) * | 2020-06-01 | 2020-09-01 | 盾构及掘进技术国家重点实验室 | Pipe sheet repairing construction method |
| CN111852510A (en) * | 2020-07-21 | 2020-10-30 | 四川童燊防水工程有限公司 | Leakage-stopping grouting and reinforcing construction method for tunnel and subway arch structure |
| CN112012764A (en) * | 2020-08-25 | 2020-12-01 | 东北大学 | Shield segment of sliding installation type tenon joint and installation method |
| CN112479715A (en) * | 2020-12-11 | 2021-03-12 | 山田研磨材料有限公司 | Silicon carbide ceramic re-sintering repair process |
| CN115143318A (en) * | 2022-06-23 | 2022-10-04 | 中国五冶集团有限公司 | Treatment method for incapability of drilling of jacking pipe in sand gravel layer jacking pipe construction process |
| 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 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184739A (en) * | 2018-09-30 | 2019-01-11 | 山东建筑大学 | A kind of in-situ rapid renovation and characterization processes for tunnel scene section of jurisdiction damage zone |
| CN111097914A (en) * | 2018-10-26 | 2020-05-05 | 浙江久恒光电科技有限公司 | Method for repairing defects of nickel-based superalloy casting |
| CN110258276A (en) * | 2019-06-21 | 2019-09-20 | 上海申继交通科技有限公司 | A kind of micro- table breakage quick maintenance method of concrete road surface |
| CN110258276B (en) * | 2019-06-21 | 2021-08-17 | 上海申继交通科技有限公司 | Rapid maintenance method for micro-surface damage of concrete pavement |
| CN111608687A (en) * | 2020-06-01 | 2020-09-01 | 盾构及掘进技术国家重点实验室 | Pipe sheet repairing construction method |
| CN111852510A (en) * | 2020-07-21 | 2020-10-30 | 四川童燊防水工程有限公司 | Leakage-stopping grouting and reinforcing construction method for tunnel and subway arch structure |
| CN112012764A (en) * | 2020-08-25 | 2020-12-01 | 东北大学 | Shield segment of sliding installation type tenon joint and installation method |
| CN112479715A (en) * | 2020-12-11 | 2021-03-12 | 山田研磨材料有限公司 | Silicon carbide ceramic re-sintering repair process |
| CN115143318A (en) * | 2022-06-23 | 2022-10-04 | 中国五冶集团有限公司 | Treatment method for incapability of drilling of jacking pipe in sand gravel layer jacking pipe construction process |
| 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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Address after: 510000 No. 204 Huanshi West Road, Yuexiu District, Guangzhou City, Guangdong Province Applicant after: Guangzhou Metro Design and Research Institute Co., Ltd. Address before: 510000 No. 204 Huanshi West Road, Yuexiu District, Guangzhou City, Guangdong Province Applicant before: Guangzhou Metro Design & Research Institute Co., Ltd. |
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Application publication date: 20180216 |