CN104790964A - Construction method for shield tunneling machine moving-out on condition of tunnel portal deviation - Google Patents
Construction method for shield tunneling machine moving-out on condition of tunnel portal deviation Download PDFInfo
- Publication number
- CN104790964A CN104790964A CN201510209732.6A CN201510209732A CN104790964A CN 104790964 A CN104790964 A CN 104790964A CN 201510209732 A CN201510209732 A CN 201510209732A CN 104790964 A CN104790964 A CN 104790964A
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- Prior art keywords
- shield machine
- shield
- hole
- tunneling machine
- shield tunneling
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- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 230000005641 tunneling Effects 0.000 title abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 239000004567 concrete Substances 0.000 claims description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 6
- 239000011440 grout Substances 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 239000011150 reinforced concrete Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000011449 brick Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000009435 building construction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000001141 propulsive effect Effects 0.000 description 2
- 241000287531 Psittacidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a construction method for shield tunneling machine moving-out on the condition of tunnel portal deviation, and belongs to the technical field of building construction. The method comprises the steps that 1, measuring and setting out are performed; 2, an injected hole and a prospect hole are drilled; 3, partial original facilities are removed; 4, a shield tunneling machine receiving base is installed; 5, a shield tunneling machine is propelled; 6, the shield tunneling machine stops propelling; 7, a gap between the shield tail and the pile lining is tamped; 8, the shield tunneling machine is moved out; 9, the shield tunneling machine is recovered. The construction method for the shield tunneling machine moving-out on the condition of the tunnel portal deviation has the advantages that on the condition that an original design tunnel portal and an actual moving-out portal of the shield tunneling machine are deviated but not exceed enclosure piles, the shield tunneling machine moving-out is achieved without needing to arrange a tunnel portal again, the construction efficiency is greatly improved, the construction cost is saved, and the constructional difficulty is reduced.
Description
Technical field
The invention belongs to technical field of building construction, be specifically related to the construction method that a kind of shield machine is appeared under situation is departed from hole.
Background technology
Current China is just actively developing subway work operation in vast city, and subway is generally divided into station and the interval two parts of shield structure.Shield-tunneling construction section is generally divided into again shield launching well in operation, shield structure interval and shield machine to receive well in operation 3 major part.Subway station and shield structure interval are often divided into different bid sections, designed respectively by different designing units and unit in charge of construction and constructed, in shield-tunneling construction, often the pre-buried steel occurred in shield machine direction of propulsion and shield structure received well is irised out hole and is had deviation to cause shield structure can not normal through arrival.If when now again applying out hole by normally appearing, often delaying duration, increase expense, being thus badly in need of the construction method that a kind of shield machine of exploitation can be appeared when hole is departed from.
Summary of the invention
The object of the invention is to overcome prior art deficiency, provide a kind of when former design portal and the actual portal of appearing of shield structure depart from and be no more than fender post, the construction method that shield machine is appeared.
The present invention realizes in the following manner:
The construction method that shield machine is appeared under situation is departed from hole, is characterized in that: the method comprises the following steps:
A, surveying and locating: according to newly-designed portal position measurement setting-out;
B, brill injected hole and horizontal inspecting hole: around new portal, bore 8-15 injected hole, wherein 2 for using horizontal inspecting hole, injected hole distance cutterhead external diameter 0.2-0.4 m, the degree of depth is 4-8 m, then in injected hole, bury mini-valve tube underground, open plum blossom hole along caliber 0.8-1.2 m, in order to ensure that shield machine can be through safely, no matter after portal, whether horizontal inspecting hole finds that there is water, all will be reinforced by mini-valve tube grouting methol liquid in advance;
C, remove portion existing facility: cut off pre-buried steel loop, abolish former portal, cut steel reinforced concrete fender post;
D, installation shield machine receive pedestal: cleaned out by received well base plate, spread the steel plate of 20-30 mm, steel plate is laterally spread the i iron of I 25, with steel plate, i iron is welded into entirety, along shield machine direction of propulsion, i iron and structure top is real, and finally install at i iron end face and receive bracket, composition shield machine receives pedestal;
E, shield machine advance: shield machine is pushed ahead and by synchronous grouting pipe cementing slurries, stopped grouting methol liquid when cutterhead withstands fender post, reception pedestal welds counter-force block, and shield machine continues normal propelling;
F, shield machine stop advancing: when the distance between shield ventral brush and fender post is less than 1.2 m, and shield machine stops advancing, and stop guaranteeing that shield machine shield ventral brush can not leave fender post scope when advancing at shield machine;
G, tamp space between shield tail and pile lining: spray early strength concrete toward the space between shield machine shield tail and pile lining and tamp, leave standstill 6-10 h and solidify completely to concrete;
H, shield machine are appeared: by synchronous grouting pipe cementing slurries to full state, after cement grout solidifies completely, in the end the upper common brick of pad bottom an endless tube sheet, and when preventing from appearing, section of jurisdiction sinks, and is slowly released by shield machine from new portal;
I, shield machine reclaim: shield machine leaves portal, disintegrate and hang away.
Preferred further, described mini-valve tube is Ф 50 steel pipe.
Preferred further, during by mini-valve tube grouting methol liquid, the water/binder ratio of cement grout gets 1.0, and tunnel axis bottom grouting pressure is 0.25 Mpa, and tunnel axis top grouting pressure is 0.2 Mpa.
Preferred further, when cutting steel reinforced concrete fender post, first up and then down segmentation cuts.
Compared with prior art, tool has the following advantages in the present invention:
(1) when departing from appears in shield machine and hole, do not need again to make new portal and just can realize shield machine and appear safely.
(2) construction method ratio of the present invention normally through saving construction cost 20 ~ 300,000 yuan of appearing, remarkable in economical benefits.
(3) construction method of the present invention is appeared more than the 2 weeks engineering time of saving than normally through, fast effectively.
(4) construction method design science of the present invention, safe and reliable, simple to operate, is beneficial to and applies.
Accompanying drawing explanation
Fig. 1 is the layout schematic diagram of appearing under situation is departed from shield machine hole of the present invention.
Fig. 2 is shield machine of the present invention location arrangements schematic diagram when withstanding fender post.
Fig. 3 is that shield machine ventral brush of the present invention is shut down when fender post and sprayed and fills out concrete schematic diagram.
In Fig. 1,2,3: the former design portal of 1-; The newly-designed portal position of 2-; 3-fender post; 4-injected hole and horizontal inspecting hole; 5-station main body; 6-cutterhead; 7-shield body; 8-section of jurisdiction; 9-early strength concrete; 10-receives pedestal.
Detailed description of the invention
In conjunction with following case history, the specific embodiment of the present invention is described further.
embodiment 1
Project profile:
Station, Wuhan Rail Transit No. 6 line first stage of the project Zhong Jia villages-Qin station running tunnel engineering is made up of one group of diplopore shield tunnel interval, interval right Xian Chuzhongjia village is northwards walked along parrot main road behind station, walk with No. 4 left line parallels of line, under wear north row after Beijing-Guangzhou Railway embankment and arrive qin platform.Due to received well portal and tunnel axis deviation, portal needs again to construct.When shield machine enters the station discovery deviation, portal steel loop also has little time installation, therefore cannot enter the station by normal through step, needs when through appearing by construction method construction of the present invention.
Shield duct piece ring external diameter 6m, internal diameter 5.4m, wall thickness 0.3m, ring width 1.5m, strength grade of concrete C50, seepage-resistant grade P12.This engineering geology is clay soil.
In conjunction with this engineering, detailed construction method of the present invention is:
A, surveying and locating: according to newly-designed portal position 2 surveying and locating;
B, brill injected hole and horizontal inspecting hole 4: around new portal, bore 8 injected holes, wherein 2 for using horizontal inspecting hole, injected hole distance cutterhead external diameter 0.3 m, the degree of depth is 6 m, then in injected hole, buries mini-valve tube underground, and mini-valve tube is Ф 50 steel pipe, plum blossom hole is opened along caliber 1.0 m, in order to ensure that shield machine can be through safely, no matter after portal, whether horizontal inspecting hole finds that there is water, all will be reinforced by mini-valve tube grouting methol liquid in advance;
C, remove portion existing facility: cut off pre-buried steel loop, abolish former portal, cuts steel reinforced concrete fender post 3, and when cutting fender post 3, segmentation is carried out from top to bottom;
D, installation shield machine receive pedestal 10: cleaned out by received well base plate, spread the steel plate of 20 mm, steel plate is laterally spread the i iron of I 25, with steel plate, i iron is welded into entirety, along shield machine direction of propulsion, i iron and structure top is real, and finally install at i iron end face and receive bracket, composition shield machine receives pedestal 10;
E, shield machine advance: shield machine is pushed ahead and by synchronous grouting pipe cementing slurries, grouting methol liquid is stopped when cutterhead 6 withstands fender post, during shield machine arrival fender post, shield structure thrust reduces, when after tunnel holing through, shield structure front is without propulsive thrust, to be connected causing section of jurisdiction 8 with the circumferential weld between section of jurisdiction and closely not produce and leak, therefore be used for increasing the propulsive thrust of shield machine receiving 10 weldering counter-force blocks on pedestal, in arrival tunneling process, that strengthens segment bolt tightens up work, and shield machine continues normal propelling;
F, shield machine stop advancing: when the distance between shield ventral brush and fender post is less than 1.2 m, and shield machine stops advancing, and stop guaranteeing that shield machine shield ventral brush can not leave fender post scope when advancing at shield machine;
G, tamp space between shield tail and pile lining: spray early strength concrete 9 toward the space between shield machine shield tail and pile lining, the space between shield tail and former portal is comparatively large, needs multi-injection early strength concrete 9, until completely closely knit, leave standstill 8 h and solidifies completely to concrete;
H, shield machine are appeared: by synchronous grouting pipe cementing slurries to full state, after cement grout solidifies completely, in the end the upper common brick of pad bottom an endless tube sheet, and when preventing from appearing, section of jurisdiction sinks, and is slowly released by shield machine from new portal;
I, shield machine reclaim: shield machine leaves portal, disintegrate and hang away.
Time in said method by mini-valve tube grouting methol liquid, the water/binder ratio of cement grout gets 1.0, and tunnel axis bottom grouting pressure is 0.25 Mpa, and tunnel axis top grouting pressure is 0.2 Mpa.
By above-mentioned construction method, process site operation that shield machine and hole occur departing from and cannot appear and to have suddenlyd change situation.When departing from appears in shield machine and hole, use construction method of the present invention, shield machine overall safety is appeared and is only used 7 days, again portal normal through then minimum needs 25 days of appearing again are carried out, in addition, construction method of the present invention eliminates the expense of the processing of portal steel loop and fabrication and installation, and appear cost-saving 20 ~ 300,000 yuan than normally through, therefore construction method of the present invention is quicker, economical.
Claims (4)
1. a shield machine construction method of appearing under situation is departed from hole, is characterized in that: the method comprises the following steps:
A, surveying and locating: according to newly-designed portal position measurement setting-out;
B, brill injected hole and horizontal inspecting hole: around new portal, bore 8-15 injected hole, wherein 2 for using horizontal inspecting hole, injected hole distance cutterhead external diameter 0.2-0.4 m, the degree of depth is 4-8 m, then in injected hole, mini-valve tube is buried underground, open plum blossom hole along caliber 0.8-1.2 m, reinforced by mini-valve tube grouting methol liquid;
C, remove portion existing facility: cut off pre-buried steel loop, abolish former portal, cut steel reinforced concrete fender post;
D, installation shield machine receive pedestal: cleaned out by received well base plate, spread the steel plate of 20-30 mm, steel plate is laterally spread the i iron of I 25, with steel plate, i iron is welded into entirety, along shield machine direction of propulsion, i iron and structure top is real, and finally install at i iron end face and receive bracket, composition shield machine receives pedestal;
E, shield machine advance: shield machine is pushed ahead and by synchronous grouting pipe cementing slurries, stopped grouting methol liquid when cutterhead withstands fender post, reception pedestal welds counter-force block, and shield machine continues normal propelling;
F, shield machine stop advancing: when the distance between shield ventral brush and fender post is less than 1.2 m, and shield machine stops advancing, and stop guaranteeing that shield machine shield ventral brush can not leave fender post scope when advancing at shield machine;
G, tamp space between shield tail and pile lining: spray early strength concrete toward the space between shield machine shield tail and fender post pile lining and tamp, leave standstill 6-10 h and solidify completely to concrete;
H, shield machine are appeared: by synchronous grouting pipe cementing slurries to full state, after cement grout solidifies completely, and in the end the upper common brick of pad bottom an endless tube sheet, slowly releases shield machine from new portal;
I, shield machine reclaim: shield machine leaves portal, disintegrate and hang away.
2. a kind of shield machine according to claim 1 construction method of appearing under situation is departed from hole, is characterized in that: described mini-valve tube is Ф 50 steel pipe.
3. a kind of shield machine according to claim 1 construction method of appearing under situation is departed from hole, it is characterized in that: during by mini-valve tube grouting methol liquid, the water/binder ratio of cement grout gets 1.0, tunnel axis bottom grouting pressure is 0.25 Mpa, and tunnel axis top grouting pressure is 0.2 Mpa.
4. a kind of shield machine according to claim 1 construction method of appearing under situation is departed from hole, it is characterized in that: when cutting steel reinforced concrete fender post, first up and then down segmentation cuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209732.6A CN104790964A (en) | 2015-04-29 | 2015-04-29 | Construction method for shield tunneling machine moving-out on condition of tunnel portal deviation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510209732.6A CN104790964A (en) | 2015-04-29 | 2015-04-29 | Construction method for shield tunneling machine moving-out on condition of tunnel portal deviation |
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| CN104790964A true CN104790964A (en) | 2015-07-22 |
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| CN201510209732.6A Pending CN104790964A (en) | 2015-04-29 | 2015-04-29 | Construction method for shield tunneling machine moving-out on condition of tunnel portal deviation |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221158A (en) * | 2015-10-28 | 2016-01-06 | 广州广隧机电设备有限公司 | Shield structure export & import note dual slurry construction method |
| CN107060813A (en) * | 2016-12-24 | 2017-08-18 | 中铁十八局集团第四工程有限公司 | A kind of method of sharp radius curve shield duct piece type selecting |
| CN107143339A (en) * | 2017-07-26 | 2017-09-08 | 北京城建中南土木工程集团有限公司 | The tunnel shielding portal sealing device and its eccentrically mounted method of position adjustable |
| JP2017536490A (en) * | 2015-11-04 | 2017-12-07 | 中鉄十八局集団有限公司 | High water pressure compatible mud balance pipe propulsion device and construction method |
| CN112228084A (en) * | 2020-10-29 | 2021-01-15 | 上海市基础工程集团有限公司 | Shield tunnel portal expanding reconstruction construction method |
| CN116575928A (en) * | 2023-07-13 | 2023-08-11 | 中铁九局集团第四工程有限公司 | Shield receiving construction method based on slope foundation pit condition |
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| CN101975067A (en) * | 2010-10-20 | 2011-02-16 | 中铁隧道集团二处有限公司 | Light-section mud shield powder fine sand layer receiving method |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221158A (en) * | 2015-10-28 | 2016-01-06 | 广州广隧机电设备有限公司 | Shield structure export & import note dual slurry construction method |
| JP2017536490A (en) * | 2015-11-04 | 2017-12-07 | 中鉄十八局集団有限公司 | High water pressure compatible mud balance pipe propulsion device and construction method |
| CN107060813A (en) * | 2016-12-24 | 2017-08-18 | 中铁十八局集团第四工程有限公司 | A kind of method of sharp radius curve shield duct piece type selecting |
| CN107143339A (en) * | 2017-07-26 | 2017-09-08 | 北京城建中南土木工程集团有限公司 | The tunnel shielding portal sealing device and its eccentrically mounted method of position adjustable |
| CN107143339B (en) * | 2017-07-26 | 2023-05-30 | 北京城建中南土木工程集团有限公司 | Position-adjustable shield tunnel portal sealing device and eccentric installation method thereof |
| CN112228084A (en) * | 2020-10-29 | 2021-01-15 | 上海市基础工程集团有限公司 | Shield tunnel portal expanding reconstruction construction method |
| CN112228084B (en) * | 2020-10-29 | 2022-07-08 | 上海市基础工程集团有限公司 | Shield tunnel portal expanding reconstruction construction method |
| CN116575928A (en) * | 2023-07-13 | 2023-08-11 | 中铁九局集团第四工程有限公司 | Shield receiving construction method based on slope foundation pit condition |
| CN116575928B (en) * | 2023-07-13 | 2023-10-13 | 中铁九局集团第四工程有限公司 | Shield receiving construction method based on slope foundation pit condition |
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