CN106285693B - A kind of closed reception construction method of shield steel bushing - Google Patents
A kind of closed reception construction method of shield steel bushing Download PDFInfo
- Publication number
- CN106285693B CN106285693B CN201610793612.XA CN201610793612A CN106285693B CN 106285693 B CN106285693 B CN 106285693B CN 201610793612 A CN201610793612 A CN 201610793612A CN 106285693 B CN106285693 B CN 106285693B
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- shield
- steel bushing
- reinforcing body
- end socket
- water
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 80
- 239000010959 steel Substances 0.000 title claims abstract description 80
- 238000010276 construction Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 49
- 238000007569 slipcasting Methods 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000009412 basement excavation Methods 0.000 claims abstract description 13
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 8
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 8
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 4
- 239000000440 bentonite Substances 0.000 claims abstract description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 4
- 244000144985 peep Species 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 26
- 238000002955 isolation Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 5
- 230000005641 tunneling Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 3
- 238000012552 review Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims 1
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 239000002689 soil Substances 0.000 description 5
- 238000012407 engineering method Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
-
- 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
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Soil Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a kind of closed reception construction methods of shield steel bushing, include the following steps：When shield tail is completely into reinforcing body, the section of jurisdiction to deviating from shield tail carries out slip casting closure；By the radial grouting hole of shield body bentonite slurry is injected to shield body outside；First and second piece section of jurisdiction to deviating from shield tail carries out second of slip casting to block and completely cut off external water system；By to using dewatering measure in reinforcing body, making the water level line in reinforcing body less than excavation bottom surface；Steel bushing is installed on the pre-buried annular steel bushing of portal, and installs end socket and reaction frame；Mortar is filled in steel bushing；It uses under-voltage excavation pattern and excavates in storehouse muddy water to the pressure of steel bushing barrel to reduce；Peep hole is opened in end socket bottom, checks slip casting closure and dewatering effect；End socket and reaction frame are removed, continues to promote until shield machine is completely into hole, and carries out slip casting closure to last endless tube piece, closing portal hangs out shield machine, steel bushing, end socket and reaction frame, completes to receive.
Description
Technical field
The present invention relates to constructing tunnel fields, relate in particular to a kind of closed reception construction method of shield steel bushing.
Background technology
With the continuous quickening of China's rapid development of economy and urbanization process, urban population is more and more, and ground can
Few fewer and fewer using space, urban transportation is more and more crowded, and developing and utilizing urban underground space becomes current urban development
Inevitable requirement.Shield method is because it is small to ground traffic impact, the advantages that working security is high, low noise, becomes and builds subway area
Between the genuine preferred engineering method of tunnel, street crossing.
When using shield construction, shield, which receives, deposits big larger risk, is usually required for the receiving terminal head soil body
Consolidation process is carried out, end soil body intensity is made to meet design requirement with impermeability.End reinforcement means has deep-mixed pile, high pressure
Rotary churning pile, plain concrete diaphram wall, freezing reinforcing, SMW engineering methods, grouting and reinforcing, combined processing method etc., Practical Project
In be often above several engineering methods combination application, and usually because place space is limited in Practical Project, pipeline is removed difficult, geology
The reasons such as inclement condition are difficult to ensure that end strengthening length reaches the requirement that shield receives safely.
Therefore, it develops one kind and can ensure that shield is smoothly reached with correct posture, and prevent and the accidents such as collapse
Shield machine construction method, become for insider's urgent need to resolve the problem of.
Invention content
The present invention's proposes a kind of closed reception construction method of shield steel bushing, overcomes above-mentioned aspect in existing product
Deficiency.
The purpose of the present invention is achieved through the following technical solutions：
A kind of closed reception construction method of shield steel bushing, which is characterized in that include the following steps：
S1, with the automatic guiding system of shield machine, accurately calculates cutterhead and tail sealing in receiving tunneling process
Position is brushed, when shield tail is completely into reinforcing body, the section of jurisdiction to deviating from shield tail carries out slip casting closure；
S2 injects bentonite slurry by the radial grouting hole of shield body to shield body outside；
After S3 shield tails are completely into reinforcing body, first and second piece section of jurisdiction to deviating from shield tail carries out second of slip casting to seal
The external water system of stifled and isolation；
S4 is by using dewatering measure in reinforcing body, making the water level line in reinforcing body less than excavation bottom surface；
Steel bushing is installed on the pre-buried annular steel bushing of portal by S5, and installs end socket and reaction frame；
S6 fills mortar in steel bushing, to ensure that shield is in good reception state；
S7 uses under-voltage excavation pattern to reduce and excavates muddy water in storehouse after shield machine is abolished portal and tunneled to steel bushing
To the pressure of steel bushing barrel；
S8 opens peep hole, review slip casting envelope when distance of the shield cutter away from steel bushing end socket is 30mm, in end socket bottom
Stifled and dewatering effect；
S9 removes end socket and reaction frame, continues to promote until shield machine is completely into hole, and notes last endless tube piece
Slurry blocks, and closes portal, shield machine, steel bushing, end socket and reaction frame are hung out, and completes to receive.
Further, the steel bushing is that multiple components assemble.
Further, in S3, when shield machine enters 20 ring before reinforcing body, repetition measurement shield state, it is ensured that control is accurate, drop
Low fltting speed, after shield machine pass through first of plain concrete diaphragm wall completely into reinforcing body after, to deviate from shield tail first
Second section of jurisdiction carries out slip casting in time, completely cuts off external water system to block.
Further, in S4, several dewatering wells are provided in reinforcing body, dewatering well gos deep into tunnel bottom surface or less 4m,
When shield tail is completely into reinforcing body, opening pumping for water pump makes the water level line in reinforcing body be less than tunnel excavation bottom surface.
Further, in S5, shield machine needs outer reinforcement to divest in receive process, then again in portal mounting ring
Shape steel bushing, and high-strength bolt is installed on annular steel bushing, for connecting steel bushing.
Further, 3 I-steel are evenly distributed on end socket in S5, and I-steel is in contact with reaction frame.
Further, in S8, when the cutterhead of shield machine is tunneled to the places 30mm shutdown in front of end socket, the row of shield machine is utilized
Stock pump all exhausts the mud for excavating storehouse and air cushion storehouse, then in end socket bottom opening, examines and excavates storehouse water content, pass through water
Amount size judges dewatering effect in reinforcing body, process lasts 1 hour or more is observed, if without flow or water very little, just
It can carry out next procedure.If water is larger, dewatering well in reinforcing body can be opened and drawn water, until flow or water become smaller,
It can start next procedure.
Beneficial effects of the present invention are：It solves because site condition limitation, pipeline are removed the originals such as difficult, geological conditions is severe
Because being difficult to ensure that end strengthening length meets shield Receiver Problem when shield receives safely, which is not necessarily to sealing curtain
Cloth greatly simplifies shield and receives technique, has technologically advanced, and exploitativeness is strong, the advantage of good economy performance, while safe and reliable,
It is efficient.
Description of the drawings
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is that the closed steel bushing for receiving construction method of the shield steel bushing described in the embodiment of the present invention receives schematic diagram；
Fig. 2 is the closed steel bushing scheme of installation for receiving construction method of shield steel bushing shown in FIG. 1.
In figure：
1, shield machine；2, dewatering well one；3, dewatering well two；4, dewatering well three；5, dewatering well four；6, received well；7, element is mixed
Solidifying soil diaphragm wall；8, station diaphram wall；9, reinforcing body；10, steel bushing；11, end socket；12, reaction frame.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained belong to what the present invention protected
Range.
As shown in Figure 1, the closed reception construction method of a kind of shield steel bushing described according to embodiments of the present invention, including with
Lower step：
S1, with the automatic guiding system of shield machine 1, accurately calculates cutterhead and tail sealing in receiving tunneling process
Position is brushed, when shield tail is completely into reinforcing body 9, the section of jurisdiction to deviating from shield tail carries out slip casting closure；
S2 injects bentonite slurry by the radial grouting hole of shield body to shield body outside；
After S3 shield tails are completely into reinforcing body 9, to deviate from shield tail first and second piece section of jurisdiction carry out second of slip casting with
Block and completely cut off external water system；
S4 is by using dewatering measure in reinforcing body 9, making the water level line in reinforcing body 9 less than excavation bottom surface；
Steel bushing 10 is installed on the pre-buried annular steel bushing of portal by S5, and installs end socket 11 and reaction frame 12；
S6 fills mortar in steel bushing 10, to ensure that shield is in good reception state；
S7 uses under-voltage excavation pattern and is excavated in storehouse with reducing after shield machine 1 is abolished portal and tunneled to steel bushing 10
Pressure of the muddy water to 10 barrel of steel bushing；
S8 opens peep hole, review note when distance of the shield cutter away from 10 end socket of steel bushing is 30mm, in 11 bottom of end socket
Slurry blocks and dewatering effect；
S9 removes end socket 11 and reaction frame 12, continues to promote until shield machine 1 is completely into hole, and to last endless tube piece into
Row slip casting blocks, and closes portal, shield machine 1, steel bushing 10, end socket 11 and reaction frame 12 are hung out, and completes to receive.
Wherein, the steel bushing 10 is that multiple components assemble；Wherein, in S3, before shield machine 1 enters reinforcing body 9
When 20 ring, repetition measurement shield state, it is ensured that control is accurate, reduces fltting speed, waits for that shield machine 1 passes through first of plain concrete continuous
After wall 7 is completely into reinforcing body 9, the oneth the second section of jurisdiction to deviating from shield tail carries out slip casting in time, to block isolation external water
System；Wherein, in S4, several dewatering wells are provided in reinforcing body 9, dewatering well gos deep into tunnel bottom surface or less 4m, waits for that shield tail is complete
When entering reinforcing body 9 entirely, opening pumping for water pump makes the water level line in reinforcing body 9 be less than tunnel excavation bottom surface；Wherein, in S5, shield
Structure machine 1 needs outer reinforcement to divest in receive process, then installs annular steel bushing in portal again, and installed on annular steel bushing
High-strength bolt, for connecting steel bushing 10；Wherein, 3 I-steel are evenly distributed on end socket 11 in S5, and I-steel with
Reaction frame 12 is in contact；Wherein, it in S8, is shut down when the cutterhead of shield machine 1 is tunneled at 11 front 30mm of end socket, utilizes shield
The slurry pump of machine 1 all exhausts the mud for excavating storehouse and air cushion storehouse, then in 11 bottom opening of end socket, examines excavation storehouse aqueous
Amount judges dewatering effect in reinforcing body by water size, process lasts 1 hour or more is observed, if without flow or water
Very little is measured, next procedure can be carried out.If water is larger, dewatering well in reinforcing body 9 can be opened and drawn water, until flow or
Water becomes smaller, and can start next procedure.
In order to facilitate understand the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned
Technical solution is described in detail.
Present invention utilization " spreading is mended short " theory, cardinal principle are：Increase steel bushing in portal ring flat-plate front end to extend shield
Structure machine receives length, and shield machine is made to receive position Forward, and shield machine can be reinforced under the protection of steel bushing completely into end
Area, blocks or the measure of surface precipitation well precipitation in conjunction with the section of jurisdiction secondary grouting for having deviate from shield tail to shield machine host tail portion,
Ensure that end and solid interior water system are in isolation with extraneous in shield machine receive process, it is ensured that shield machine was receiving
Water burst does not occur in journey, gushes sand, achievees the purpose that receive safely.
1 length of shield machine in this programme is 9000m, and 7 thickness of plain concrete diaphragm wall is 800mm, 10 length of short sleeve
For 400mm, 9 length of reinforcing body is 8400mm.
Step 1: shield machine 1 accurately controls in promoting, isolation reinforcing body 9 and extraneous aquaporin are blocked in time.
In 20 ring before shield machine 1 enters reinforcing body, repetition measurement shield state, it is ensured that control is accurate, reduces fltting speed.It waits for
Shield machine 1 pass through first of plain concrete diaphragm wall 7 completely into reinforcing body 9 after, to deviate from shield tail the oneth the second section of jurisdiction
Slip casting is carried out in time, completely cuts off external water system to block.
Dewatering well 1, dewatering well 23, dewatering well 34, dewatering well 45 go deep into tunnel bottom surface or less 4m in reinforcing body,
Middle dewatering well 1, dewatering well 23 are main dewatering well, and diameter 600mm, dewatering well 34, dewatering well 45 are as the standby of inspection well
With dewatering well, diameter 300mm opens pumping for water pump when shield tail is completely into reinforcing body 9, and the water level line in reinforcing body 9 is made to be less than
Tunnel excavation bottom surface.
Step 2: connection steel bushing 10.
It is reinforcing bar by the water surface, shield machine 1 needs handle in receive process since portal diaphragm wall upstream face is glass fiber-reinforced polymer
Outer reinforcement divests, and then installs annular steel bushing again, in order to which steel bushing 10 is firmly fixed on annular steel bushing, in installation steel
High-strength bolt first is installed on annular steel bushing before sleeve 10, for docking steel bushing 10.
The bottom of steel bushing 10 is 180 degree sleeve assembly, and top is connected with 3 60 degree of sleeve assembly, four sleeve groups
Part collectively forms a full circle, and 3 injected holes are evenly equipped on the sleeve assembly of the top.
After steel bushing 10 is transported to scene, above-mentioned sleeve assembly is lifted in place using crane, passes through flange after adjusting position
It is bolted to annular steel bushing and end socket 11.
Stability when to ensure short sleeve in receive process by shield horizontal thrust, need to install reaction frame 12 additional, and
The I-steel of 3 300mm is evenly distributed on circular head 11, it can will be on end socket 11 that reaction of bearing is effectively distributed to.
Step 3: shield machine 1 abolishes portal, driving arrives in steel bushing 10.
Before shield machine 1 enters steel bushing 10, mortar should be injected into steel bushing 10 by injected hole, ensures steel bushing
Filling is closely knit in 10.
After the mortar backfilled reaches the presetting period, before shield machine 1 starts driving, first passes through shield machine 1 and carry pressure regulation system
Storehouse pressure is excavated in system, adjustment, reduces liquid level in storehouse, and shield machine 1 is made to enter under-voltage driving state.Since mortar strength is much larger than ground
Layer soil body intensity further decreases fltting speed so strictly to control driving speed and gross thrust in tunneling process, reduces
Gross thrust, at the same to keep in tunneling process at portal received well 6 communicated with 1 operating room of shield machine it is unimpeded, received well 6 with plus
Across station diaphram wall 8 between solid 9, arranges special messenger to be responsible for contacting with operating room at received well 6, be notified to portal at any time
Receiving device situation further instructs shield machine 1 to operate.According to the mileage parameter precalculated, when the cutterhead of shield machine 1 reaches
Have apart from end socket 11 and shut down at 10mm, reduces excavate storehouse pressure again, it is zero to make top pressure.
Step 3: detection slip casting closure and dewatering effect.
When the cutterhead of shield machine 1 is tunneled to shutdown at 3mm in front of sealing plate, it is gentle to excavate storehouse using the slurry pump handle of shield machine
The mud in pad storehouse all exhausts, and then in 11 bottom opening of end socket, examines and excavates storehouse water content, judges to reinforce by water size
Dewatering effect in body 9, observation process lasts 1 hour or more, if without flow or water very little, can carry out lower road work
Sequence can open dewatering well in reinforcing body 9 and draw water if water is larger, until flow or water become smaller, can start lower road
Process.
Step 4: end socket 11 is removed, 1 bracket of shield machine is received to smooth.
After crane is in place, the fixing bolt of end socket 11 is from top to bottom removed successively, and crane lifting end socket 11 is placed on specific bit
It sets, arrangement personnel divest the mortar thin layer of residue 3mm in front of cutterhead, leak out cutterhead, shield machine 1 continues to promote, suitable after bracket
Profit receives.
Shield machine 1 can disturb the soil body of reinforcing body 9 during follow-up bracket, it is made to be moved with shield machine 1,
Grouting methol is carried out in time after shield tail is deviate from section of jurisdiction, ensure that filling is closely knit on the outside of section of jurisdiction.
In conclusion by the above-mentioned technical proposal of the present invention, solve because site condition limitation, pipeline remove it is difficult,
The reasons such as geological conditions is severe are difficult to ensure that end strengthening length meets shield Receiver Problem when shield receives safely, the construction
Method be not necessarily to sealing cord, greatly simplify shield receive technique, have it is technologically advanced, exploitativeness is strong, the advantage of good economy performance,
It is safe and reliable simultaneously, it is efficient.
The present invention is not limited to above-mentioned preferred forms, anyone can show that other are various under the inspiration of the present invention
The product of form, however, make any variation in its shape or structure, it is every that there is skill identical or similar to the present application
Art scheme, is within the scope of the present invention.
Claims (7)
1. a kind of closed reception construction method of shield steel bushing, which is characterized in that include the following steps：
S1, with the automatic guiding system of shield machine, accurately calculates cutterhead and tail sealing brush institute in receiving tunneling process
In position, when shield tail is completely into reinforcing body, the section of jurisdiction to deviating from shield tail carries out slip casting closure；
S2 injects bentonite slurry by the radial grouting hole of shield body to shield body outside；
After S3 shield tails are completely into reinforcing body, first and second piece section of jurisdiction to deviating from shield tail carry out second of slip casting to block and
The external water system of isolation；
S4 is by using dewatering measure in reinforcing body, making the water level line in reinforcing body less than excavation bottom surface；
Steel bushing is installed on the pre-buried annular steel bushing of portal by S5, and installs end socket and reaction frame；
S6 fills mortar in steel bushing, to ensure that shield is in good reception state；
S7 after shield machine is abolished portal and is tunneled to steel bushing, use under-voltage excavation pattern with reduce excavate storehouse in muddy water to steel
The pressure of sleeve wall；
S8 opens peep hole when distance of the shield cutter away from steel bushing end socket is 30mm, in end socket bottom, review slip casting block with
Dewatering effect；
S9 removes end socket and reaction frame, continues to promote until shield machine is completely into hole, and carries out slip casting envelope to last endless tube piece
It is stifled, portal is closed, shield machine, steel bushing, end socket and reaction frame are hung out, completes to receive.
2. the closed reception construction method of a kind of shield steel bushing according to claim 1, which is characterized in that the steel bushing
Assemble for multiple components.
3. the closed reception construction method of a kind of shield steel bushing according to claim 2, which is characterized in that in S3, shield
When structure machine enters 20 ring before reinforcing body, repetition measurement shield state, it is ensured that control is accurate, reduces fltting speed, waits for that shield machine passes through the
After one of plain concrete diaphragm wall is completely into reinforcing body, the oneth the second section of jurisdiction to deviating from shield tail carries out slip casting in time, with
Block the external water system of isolation.
4. the closed reception construction method of a kind of shield steel bushing according to claim 3, which is characterized in that in S4,
Several dewatering wells are provided in reinforcing body, dewatering well gos deep into tunnel bottom surface or less 4m, when shield tail is completely into reinforcing body, boiling water
Pumping water makes the water level line in reinforcing body be less than tunnel excavation bottom surface.
5. the closed reception construction method of a kind of shield steel bushing according to claim 4, which is characterized in that in S5, shield
Structure machine needs outer reinforcement to divest in receive process, then installs annular steel bushing in portal again, and installed on annular steel bushing
High-strength bolt, for connecting steel bushing.
6. the closed reception construction method of a kind of shield steel bushing according to claim 5, which is characterized in that sealed in S5
3 I-steel are evenly distributed on head, and I-steel is in contact with reaction frame.
7. the closed reception construction method of a kind of shield steel bushing according to claim 6, which is characterized in that in S8, when
The cutterhead of shield machine is tunneled to shutdown at 30mm in front of end socket, using the slurry pump of shield machine the mud for excavating storehouse and air cushion storehouse
It all exhausts, then in end socket bottom opening, examines and excavate storehouse water content, judge that precipitation is imitated in reinforcing body by water size
Fruit, observation process lasts 1 hour or more, if without flow or water very little, can carry out next procedure, if water
It is larger, dewatering well in reinforcing body can be opened and drawn water, until flow or water become smaller, next procedure can be started.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610793612.XA CN106285693B (en) | 2016-08-31 | 2016-08-31 | A kind of closed reception construction method of shield steel bushing |
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| CN201610793612.XA CN106285693B (en) | 2016-08-31 | 2016-08-31 | A kind of closed reception construction method of shield steel bushing |
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| CN106285693B true CN106285693B (en) | 2018-10-19 |
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| CN106869949A (en) * | 2017-02-10 | 2017-06-20 | 莫绍愚 | A kind of method that shield machine is received with steel bushing |
| CN106988753A (en) * | 2017-05-08 | 2017-07-28 | 中建三局基础设施工程有限公司 | A kind of U-shaped plain concrete ground-connecting-wall adds steel bushing shield structure and its method of reseptance |
| CN108019213A (en) * | 2017-12-22 | 2018-05-11 | 中铁十六局集团北京轨道交通工程建设有限公司 | A kind of portal abnormal shape sleeve arrangement |
| CN109356596B (en) * | 2018-10-30 | 2020-05-12 | 中建交通建设集团有限公司 | Method for launching and receiving shield tunneling machine by utilizing recyclable underground continuous wall and steel sleeve |
| CN110145319B (en) * | 2019-05-31 | 2020-02-21 | 粤水电轨道交通建设有限公司 | Shield receiving method for quickly recharging mud into steel sleeve by using circulation pressure maintaining system |
| CN110344834A (en) * | 2019-07-12 | 2019-10-18 | 中铁十二局集团有限公司 | Nearly section water-rich silty sand layers shield machine receives construction method |
| CN112727467A (en) * | 2020-09-29 | 2021-04-30 | 中铁隧道局集团有限公司 | Chamber construction method for repairing shield cutter head cutter |
| CN112253162B (en) * | 2020-11-10 | 2022-11-08 | 中铁四局集团有限公司 | Water-rich sand layer large-diameter jacking pipe group entrance and exit reinforcing structure and construction method |
| CN113431089A (en) * | 2021-07-28 | 2021-09-24 | 中船黄埔文冲船舶有限公司 | Manhole well installation process on steel shell of immersed tube tunnel |
| CN114109406A (en) * | 2021-11-22 | 2022-03-01 | 中铁十八局集团有限公司 | Steel sleeve device suitable for shield machines with different diameters |
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