CN205243511U - Rich water sand bed shield constructs dregs improvement construction system - Google Patents
Rich water sand bed shield constructs dregs improvement construction system Download PDFInfo
- Publication number
- CN205243511U CN205243511U CN201521089808.8U CN201521089808U CN205243511U CN 205243511 U CN205243511 U CN 205243511U CN 201521089808 U CN201521089808 U CN 201521089808U CN 205243511 U CN205243511 U CN 205243511U
- Authority
- CN
- China
- Prior art keywords
- bentonite
- shield
- sediment improvement
- shield machine
- foam
- 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.)
- Active
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model discloses a rich water sand bed shield constructs dregs improvement construction system, including the bentonite system, foam filling pipe system, shield construct quick -witted dregs modified system, the bentonite system includes that the shield constructs quick -witted bentonite mix system, the shield constructs quick -witted bentonite filling pipe system, the shield constructs the bentonite storage jar (3) that quick -witted bentonite mix system passes through tubing pump (2) to connect shield structure machine, the shield constructs bentonite agitator tank (5) that quick -witted bentonite filling pipe system includes that motor (4) drive, and is connected with bentonite fermentation cylinder (8) through the play thick liquid pipe (7) by slush pump (6) control, it starches pipe (10) by sending of sediment stuff pump (9) control to be connected with between bentonite storage jar (3) and the peng run soil fermentation cylinder (8), foam filling pipe system includes foam generator (13), air compressor machine, storage tank (14) and tubing pump. The utility model discloses change the shortcoming of the thixotropic property of the soil body, ensured that the shield constructs safe smooth and easy tunnelling construction, shortened the time limit for a project, had apparent social and economic benefits.
Description
Technical field
The utility model relates to a kind of construction method of the realm of building construction, relates in particular to a kind of water-rich sand layer shield structure sediment improvement and executesWork system.
Background technology
Shield machine is mainly earth pressure balanced shield at present, is characterized in the soil body excavating out as supporting stable Jie of excavation faceMatter, but require as the soil body of Supporting Media there is good plastic deformation, soft denseness, internal friction angle is little and permeability is little. ByCan not meet these characteristics completely in the general soil body, so will improve. If adopt the work of adding separately bentonite or foamMethod, soil improvement weak effect, driving speed is slow, long in time limit.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of water-rich sand layer shield structure sediment improvement construction system, has overcome existingThere is the shortcoming of the thixotropic property of the technology soil body, there is optimum soil body creeping correctional effect, guaranteed the smooth and easy driving of shield structure safetyConstruction, has shortened the duration.
The engineering method scope of application described in the utility model is particularly useful for balancing earth-pressure shielding machine being rich in while tunneling in underground water layer of sand pairThe grittiness soil body is improved, and to improve the physical property of the soil body, ensures that shield-tunneling construction carries out smoothly.
Technical scheme described in the utility model is based on following technological principle:
In earth pressure balanced shield, EPBS construction, forming the soil body of good creeping in native storehouse, is the important prerequisite of shield structure smooth construction.Arenaceous stratum creeping is poor, have mechanics unstability, has good mobility in order to make to excavate the soil body, must have 30% left sideRight subparticle, in sand stratum, subparticle is difficult to reach this content. Therefore, in the time that tunneling, adds to excavation face shield machineAdd bentonite slurry, cut the soil body getting off through fully stirring with excavation face, effectively increased the fine particle content in sandy ground,Improve the physical property on sand stratum, form the mixing soil body with better creeping and low permeability, creeping state in native storehouseThe equalizing pressure that the good soil body is set to face transmission, realize shield machine all the time keep under the condition of dynamic equilibrium continuously toFront propelling. Meanwhile, utilize the good greasy property of foam, can effectively reduce cutterhead moment of torsion, improve driving speed. In addition,Foam has compressibility, and stablizing of soil pressure also had to positive effect.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
A kind of water-rich sand layer shield structure sediment improvement construction system, comprises bentonite system, and foam injected system, shield machine dregs changeGood system; Described bentonite system comprises shield machine bentonite MIXING SYSTEM CONTROLLED BY and shield machine bentonite injected system.
Described shield machine bentonite MIXING SYSTEM CONTROLLED BY connects the bentonite storage tank of shield machine by tubing pump;
Described shield machine bentonite injected system comprises the bentonite agitator tank of driven by motor, and by by the pulp of slush pump controlPipe is connected with bentonite fermentation tank, between described bentonite storage tank and Peng Run soil fermentation tank, is connected with the slurry that send by the control of slag stock pumpPipe;
Described shield machine bentonite MIXING SYSTEM CONTROLLED BY is placed in ground, is mainly used in the mix and fermentation storage of bentonite slurry, and mix is sent outAfter completing, ferment delivers to the bentonite storage tank of shield machine by tubing pump;
Described shield machine bentonite injected system, comprises storage tank, injection pump, frequency converter and pipeline; In described storage tank, can establishShaft; Described injection pump injects for bentonite slurry; Described frequency converter for according to sediment improvement effect and driving speed andThereby in time, is adjusted injection pump rotating speed and changes bentonite injection rate.
Described foam injected system comprises foam maker, air compressor machine, storage tank and various tubing pump composition, is mainly used in bubbleAfter foam agent mixes with water,, note by the foam inlet in cutterhead and native storehouse mixing material expansion generation foam with compressed airEnter in the face and native storehouse in described cutterhead front.
The shield machine of described shield machine sediment improvement system is known one, and as Hitachi's balancing earth-pressure shielding machine, described system is logicalCross employing bentonite slurry and foaming agent and be used in conjunction with as sediment improvement agent, or, the situation such as in particular cases meet water pocket, gushShi Caiyong high molecular polymer substitutes bentonite as sediment improvement agent.
Described shield machine sediment improvement system also comprises that sediment improvement agent injection pipeline distributes, and described sediment improvement agent is by pumping equipmentConnect cutterhead by center steering axle and be injected into cutterhead front, on described cutterhead spoke, be uniformly distributed injection orifice, comprise bentonite notePenetrate injection orifice, the foaming agent injection pipeline injection orifice of pipeline. In addition, in described native storehouse, be also provided with bentonite slurry or foam noteEntrance is provided with foam inlet on the conveying worm of system.
By described sediment improvement system, innovative point also shows described modifying agent and the uniform mixing of dregs energy. Especially, improvementAgent is particularly important from the injection of cutterhead front panel. Cutterhead slow cutting face in tunneling process, meanwhile modifying agent is synchronousBe expelled on face, the area that the dregs cutting like this mixes with modifying agent reaches the maximum probability of extreme value. Be expressed to soilDregs in storehouse by the continuing to rotarily drive and stir dregs in native storehouse of cutterhead, makes modifying agent further mix with dregs again.
The structure member of the utility model said system can obtain from market, but group technology between its parts order is this realityWith novel peculiar.
In fact, sediment improvement complex process in water-rich sand layer, the use of rationally arranging in pairs or groups of bentonite slurry and foaming agent, how profitThe injection pipeline of making good use of cutterhead front side is also extremely important. Described injection port is not identical to the distance at cutterhead center, in other words at cutterWhen disc spins, the injection track of pipeline can not overlap, and can ensure like this modifying agent even injection, again can be by bentonite slurry and bubbleInfluencing each other between foam agent drops to minimum. In addition, according to formation variation, bentonite injection pipeline can change macromolecule at any time intoPolymer injection pipeline, prevents the generation of the situation of gushing.
The technical scheme of the above-mentioned engineering method of the utility model has following technique effect and engineering method feature:
1. the stability that keeps excavation face, prevents protuberance and sedimentation that ground is excessive. Bentonite slurry makes the excavation face soil body form toolHave the mixture of better creeping and low permeability, and foam has compressibility, both are in conjunction with the excavation face soil body has been playedProtect effect, be conducive to the foundation of earth pressure balance, thereby avoid ground to occur excessive protuberance and sedimentation.
2. reduce the wearing and tearing of sand bed soil to cutterhead and cutter, reduce construction cost. Sandy soil loose particles, without cohesive strength, addsAfter mud, mud is enclosed in around particle, forms layer of mud film, has increased the cohesive strength between particle, has improved being subject to of the soil bodyPower situation, has reduced the wearing and tearing of sandy soil particle to cutterhead, cutter effectively. The volume of foam is minimum, the mud after mix-frothSlurry diffusivity is enhanced, and can under the stirring of cutterhead, in soil layer, reduce the packing of the soil body by rapid permeability, has accelerated soilThe mobility of body, the bubble being simultaneously adsorbed between particle can reduce the direct friction of soil body particle and cutterhead system, thereby subtractsThe little wearing and tearing to cutterhead, reduce construction cost.
3. prevent that dregs from sticking in cutterhead and conveying worm, avoid inaccessible phenomenon, alleviate mechanical load, reduce cutterhead moment of torsion,Improve driving speed. Utilize the good greasy property of foam, improve soil body granular texture, reduce the permeability of the soil body. Again because of itProportion is little, stirs load light, easily the soil body is stirred, thus can balance excavation face soil pressure, again can be outwards smooth and easy continuouslyCasting.
4. this engineering adopts 55KW High-power Mud Pump to carry out forced circulation to bentonite and uses immediately (bentonite slurry conventionally after expandedLiquid will store more than 6 hours and could use after making in slurry can), save reservoir vessel, save floor space,Accelerate construction speed, obtained better effects.
Brief description of the drawings
Fig. 1 the utility model water-rich sand layer soil improvement construction flow chart
Fig. 2 is the utility model cutterhead front side modifying agent injection port distributed architecture schematic diagram
Fig. 3 is the utility model overall structure schematic diagram
Wherein, 1-shield machine, 2-tubing pump, 3-bentonite storage tank, 4-motor, 5-bentonite agitator tank, 6-slush pump,7-grout outlet, 8-bentonite fermentation tank, 9-slag stock pump, 10-send slurry pipe, 11-cutterhead, 12-foam inlet, 13-foam occursDevice, 14-storage tank
Detailed description of the invention
Water-rich sand layer soil improvement construction system of the present invention and construction flow process as shown in Figure 3, comprise bentonite system, bubbleFoam injected system, shield machine sediment improvement system; Described bentonite system comprises that shield machine bentonite MIXING SYSTEM CONTROLLED BY, shield machine are swollenMoisten native injected system;
Shield machine bentonite MIXING SYSTEM CONTROLLED BY connects the bentonite storage tank 3 of shield machine by tubing pump 2;
Shield machine bentonite injected system comprises bentonite agitator tank 5 that motor 4 drives and by going out of being controlled by slush pump 6Slurry pipe 7 is connected with bentonite fermentation tank 8, between described bentonite storage tank 3 and Peng Run soil fermentation tank 8, is connected with by slag stock pump9 slurries that send of controlling manage 10;
Foam injected system comprises foam maker 13, air compressor machine, storage tank 14 and tubing pump, is located at the cutterhead of shield machine 111 and native storehouse in foam inlet 12, foaming agent injects in the face and native storehouse in described cutterhead 11 fronts.
The intrasystem sediment improvement agent of shield machine sediment improvement is that injection pipeline distributes as shown in Figure 2; Equal on described cutterhead 11 spokesEven distribution injection orifice, described injection orifice comprises injection orifice, the foaming agent injection pipeline injection orifice of bentonite injection pipeline; Described soilIn storehouse, be also provided with bentonite slurry or foam inlet.
Modifying agent is injected from the panel in the front of described cutterhead 11.
Sediment improvement agent is formulated in proportion by bentonite slurry and foaming agent; Described bentonite slurry can be by high molecular polymerReplace.
The construction of water-rich sand layer shield structure sediment improvement construction system as shown in Figure 1, comprises the following steps:
(1) make bentonite slurry, bentonite ferments expanded, and expanded bentonite is transported in pumping;
(2) transport foaming agent;
(3) step (), step (two) bentonite and foaming agent are injected respectively to shield machine 1, in described native storehouse, carry outThe soil body stirs, and carries out soil improvement.
Technique effect of the present utility model and quality control performance are following several aspects:
1) sediment improvement is taking bentonite slurry as main, and foaming agent is auxiliary. Taking driving speed and slag tap denseness as Main Basis, in good timeRegulate bentonite incorporation and bentonite slurry injection rate; Slag tap situation as foundation taking cutterhead moment of torsion and screw machine, adjust bubble in good timeFoam agent volume and injection rate.
2) bentonite slurry will reach good improved effect, requires: the one, and the steady quality of guarantee bentonite material; The 2nd, tightLattice are according to match ratio mixing, and ensure the expanded time of bentonite, as, adopt 55KW High-power Mud Pump to force bentoniteCirculate expanded, obtain better effects; The 3rd, to the every ring injection rate of full section layer of sand 8～10m3, injecting volume is water-rich sand layer20%～28% of cumulative volume, reaches more than 15% layer of sand clay content.
3) concrete condition that the match ratio of foaming agent and injection rate should be slagged tap according to cutterhead torque and screw machine is determined, if cutterheadMoment of torsion is bigger than normal, suitably strengthens foam mixing liquid concentration or injection rate; Otherwise need to reduce foaming agent mixed liquid concentration or injection rate.The injection volume of every ring foam mixing liquid is about 4%～6% of water-rich sand layer cumulative volume.
4), in the time occurring slightly to gush, can, by controlling the size of conveying worm gate and strictly controlling the measures such as casting amount, enterRow solves; In the time occurring seriously to gush, adopt high molecular polymer to substitute bentonite, can effectively prevent the generation of gushing.
5) control attitude of shield machine, bentonite injection rate, foam injection rate well, establish earth pressure balance, for Different Strata withAnd ground settlement feedback information, adjust in time support pressure.
7. performance analysis
1) economic benefit
Direct economic benefit: this engineering method is compared with other engineering methods of adding separately bentonite or foam, and soil improvement is effective, pickEnter speed and obviously accelerate, average driving speed 50～70mm/min while normally driving, day driving number of rings on average more than 14 rings, phaseThe Shield Construction Method Used consumptive material of answering. Comprise bentonite, foam, lubricant grease, shield tail grease, 676 yuan/ring of electricity charge saving, altogetherMeter 1405 rings, save approximately 94.98 ten thousand yuan of engineering costs.
Indirect economic effect: compared with the utility model practical example similar engineering adjacent with other, 2 months in advance duration, saveApproximately 500,000 yuan of administration fees.
2) social benefit
This engineering method, compared with other similar shield structure engineerings, relies on good soil improvement effect, and TBM's position control is good, groundSettlement Control is in specification allowed band, and shield tunnel Linear Control is good, and shield tunnel seepage water spot is less, has been subject to ownerConsistent favorable comment with supervisor. The successful Application of this construction method is metro shield running tunnel under similar formation condition from now onConstruction experience for reference is provided, to promoting the development of my unit Shield Construction Technique, have important practical significance.
Application example:
No. 6 lines of Beijing Metro second phases 16 mark new city station, engineering east～eastern little battalion interval total length of standing is 842.95m, in tunnel isFootpath is Ф 5.4m shield tunnel, the thick 0.30m in section of jurisdiction. Shield structure is mainly rich water medium coarse sand, fine sand layer by location, and wear partMore silty clay short lap. This section of circuit is composed and is deposited one deck underground water, and groundwater type is diving (two), groundwater level depth 5.85～6.9m. Buried depth 15.74～18.87m at the bottom of running tunnel.
In water-rich sand layer driving, sediment improvement is difficult point and the emphasis in whole work progress, and sediment improvement puts in place, guarantee shieldStructure construction safety, smooth, quick. Because layer of sand dense water is poor, driving shut down after, in native storehouse sand easily emanate, precipitation, closeReal, when cutterhead is started again, moment of torsion is large, and difficulty in starting is large to shield machine equipment damage. While adopting earth pressure balance pattern drivingCan be because of the poor easy generation spewing phenomenon of dregs dense water. Dregs workability is poor, and screw machine is slagged tap not smooth, causes driving speed slow, pickEnter parameter wayward. According to the problem that in water-rich sand layer driving, sediment improvement faces, in No. 6 lines of Beijing Metro 16 mark eastThe interval employing taking bentonite slurry as main of the little battalion in portion's new city station～eastern station shield structure, foaming agent is auxiliary, with high molecular polymer as benefitThe scheme of filling is carried out sediment improvement, and the shield machine drivage efficiency greatly improving, has controlled surface subsidence well, and construction effectGood.
The interval shield construction that adopts in No. 6 lines of Beijing Metro 16 new city stations, bid section east～eastern little battalion station, this location geology is rich waterLayer of sand, can be because of the poor spewing phenomenon that produces of dregs dense water while adopting earth pressure balance pattern driving; Dregs workability is poor, driving speedDegree is slow, and boring parameter is wayward. According to the problems referred to above that in water-rich sand layer driving, sediment improvement faces, in Beijing Metro 6In number line 16 bid section shield-tunneling constructions, full section thixotroping liquefiable sand layer soil improvement technology is conducted in-depth research, adopt swellingSoil paste liquid and foaming agent are used in conjunction with as sediment improvement agent, thereby the perfect thixotropic property of this type of soil body reaches optimum soilBody creeping correctional effect, has guaranteed the smooth and easy tunneling construction of shield structure safety.
The technical program main points are that in and native storehouse anterior at cutterhead, injected water, bentonite slurry, polymer or foam etc. mix interpolationMaterial, through strong stirring, improves Plastic flow of soil, the mobility of excavation, reduces the water penetration of dregs. By in Beijing Metro 6Research and the application of number line 16 bid sections, formed a set of complete water-rich sand layer shield structure sediment improvement construction method.
The utility model overall technology reaches domestically leading level. This technology becomes in No. 6 lines of Beijing Metro 16 bid section shield-tunneling constructionsMerit application, has obtained good economy, society and environmental benefit, has wide popularization and application and is worth.
This technology is successfully used in the interval construction of No. six lines of subway 16 mark shield structure, has obtained good economy, society and environmental protectionBenefit, on schedule, the construction that has completed this project of high-quality. Provide good reference to the shield-tunneling construction on similar stratum, to pushing awayThe development of moving Shield Construction Technique, has important practical significance.
Claims (5)
1. a water-rich sand layer shield structure sediment improvement construction system, is characterized in that, comprises bentonite system, foam injected system, shield machine sediment improvement system; Described bentonite system comprises shield machine bentonite MIXING SYSTEM CONTROLLED BY, shield machine bentonite injected system;
Described shield machine bentonite MIXING SYSTEM CONTROLLED BY connects the bentonite storage tank (3) of shield machine by tubing pump (2);
Described shield machine bentonite injected system comprises the bentonite agitator tank (5) of motor (4) drive, also passes through to be connected with bentonite fermentation tank (8) by the grout outlet (7) of slush pump (6) control, is connected with by sending of slag stock pump (9) control and starches and manage (10) between described bentonite storage tank (3) and Peng Run soil fermentation tank (8);
Described foam injected system comprises foam maker (13), air compressor machine, storage tank (14) and tubing pump, be located at the foam inlet (12) in cutterhead (11) and the native storehouse of shield machine (1), foaming agent injects in the face and native storehouse in described cutterhead (11) front.
2. water-rich sand layer shield structure sediment improvement construction system according to claim 1, is characterized in that, the intrasystem sediment improvement agent of described shield machine sediment improvement is that injection pipeline distributes; On described cutterhead (11) spoke, be uniformly distributed injection orifice, described injection orifice comprises injection orifice, the foaming agent injection pipeline injection orifice of bentonite injection pipeline; In described native storehouse, be also provided with bentonite slurry or foam inlet.
3. water-rich sand layer shield structure sediment improvement construction system according to claim 1 and 2, is characterized in that, described modifying agent is injected from the panel in the front of described cutterhead (11).
4. water-rich sand layer shield structure sediment improvement construction system according to claim 1 and 2, is characterized in that, described sediment improvement agent is formulated in proportion by bentonite slurry and foaming agent.
5. water-rich sand layer shield structure sediment improvement construction system according to claim 4, is characterized in that, described bentonite slurry can be replaced by high molecular polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089808.8U CN205243511U (en) | 2015-12-24 | 2015-12-24 | Rich water sand bed shield constructs dregs improvement construction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521089808.8U CN205243511U (en) | 2015-12-24 | 2015-12-24 | Rich water sand bed shield constructs dregs improvement construction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205243511U true CN205243511U (en) | 2016-05-18 |
Family
ID=55942591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521089808.8U Active CN205243511U (en) | 2015-12-24 | 2015-12-24 | Rich water sand bed shield constructs dregs improvement construction system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205243511U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545314A (en) * | 2015-12-24 | 2016-05-04 | 中铁二十二局集团第一工程有限公司 | Construction system and construction method for improving water-enriched sand layer shield waste soil |
| CN106437742A (en) * | 2016-09-05 | 2017-02-22 | 中铁十六局集团北京轨道交通工程建设有限公司 | Earth pressure balance shield construction uprush control device and method in water-rich surrounding rock |
| CN109026040A (en) * | 2018-08-03 | 2018-12-18 | 中国电建集团铁路建设有限公司 | A kind of synchronization bi-material layers sediment improvement system for earth pressure balanced shield, EPBS |
| CN109113753A (en) * | 2018-09-30 | 2019-01-01 | 中铁工程装备集团有限公司 | A kind of device and method for abolishing cutterhead mud cake |
| CN111058854A (en) * | 2019-12-10 | 2020-04-24 | 中铁十四局集团隧道工程有限公司 | Shield constructs cutter head and shield and constructs machine |
| CN113374485A (en) * | 2021-06-28 | 2021-09-10 | 中铁(上海)投资集团有限公司 | Shield grouting method based on shield muck improvement under water-rich sand layer condition |
-
2015
- 2015-12-24 CN CN201521089808.8U patent/CN205243511U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545314A (en) * | 2015-12-24 | 2016-05-04 | 中铁二十二局集团第一工程有限公司 | Construction system and construction method for improving water-enriched sand layer shield waste soil |
| CN106437742A (en) * | 2016-09-05 | 2017-02-22 | 中铁十六局集团北京轨道交通工程建设有限公司 | Earth pressure balance shield construction uprush control device and method in water-rich surrounding rock |
| CN106437742B (en) * | 2016-09-05 | 2018-11-06 | 中铁十六局集团北京轨道交通工程建设有限公司 | Earth pressure balanced shield, EPBS construction is prominent in a kind of rich water country rock gushes prevention device and method |
| CN109026040A (en) * | 2018-08-03 | 2018-12-18 | 中国电建集团铁路建设有限公司 | A kind of synchronization bi-material layers sediment improvement system for earth pressure balanced shield, EPBS |
| CN109113753A (en) * | 2018-09-30 | 2019-01-01 | 中铁工程装备集团有限公司 | A kind of device and method for abolishing cutterhead mud cake |
| CN111058854A (en) * | 2019-12-10 | 2020-04-24 | 中铁十四局集团隧道工程有限公司 | Shield constructs cutter head and shield and constructs machine |
| CN111058854B (en) * | 2019-12-10 | 2022-04-08 | 中铁十四局集团隧道工程有限公司 | Shield constructs cutter head and shield and constructs machine |
| CN113374485A (en) * | 2021-06-28 | 2021-09-10 | 中铁(上海)投资集团有限公司 | Shield grouting method based on shield muck improvement under water-rich sand layer condition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205243511U (en) | Rich water sand bed shield constructs dregs improvement construction system | |
| CN105545314A (en) | Construction system and construction method for improving water-enriched sand layer shield waste soil | |
| CN101967978B (en) | Construction method for improving shield soil in composite sand gravel stratum | |
| CN100543270C (en) | The job practices of composite soil pressure balance tunnel shielding machine for traversing shallow-buried water-rich sand layer | |
| CN102720508B (en) | Shield construction method for continuously under-passing dense buildings in silty-soil and silty-sand formation | |
| CN104653191B (en) | A kind of method of earth pressure shield tunneling machine high efficient driving in rich water round gravel stratum | |
| CN102767377B (en) | Loess strata subway tunnel earth pressure balance shield construction method | |
| CN102425429B (en) | Method for pumping dregs through earth pressure balance shield | |
| CN101603427B (en) | Shield synchronization slip casting construction technology | |
| CN105201520A (en) | Muck improvement technology for earth pressure balance shield construction in sandy cobble stratum | |
| CN103306684A (en) | Process for grouting on back of shield segment | |
| CN209195416U (en) | The compound stratum shield Multiple Combination retaining wall ruggedized construction with pressure that opens a position | |
| CN108035722A (en) | Earth pressure balanced shield, EPBS high permeability sand modification method | |
| CN105804761A (en) | Construction method suitable for making shield penetrate through building in close range on liquefied sandy soil stratum | |
| CN104150822A (en) | Thixotropic slurry and preparation method thereof | |
| CN106948828A (en) | A kind of device that secondary grouting is carried out using shield synchronization slip casting equipment | |
| CN103114859A (en) | Mud adding type earth pressure balance tube push bench | |
| CN202925511U (en) | Sheet-pile wharf structure for soft soil foundation | |
| CN105257303A (en) | Construction method capable of achieving synchronous double-grout grouting during shield tunneling | |
| CN203961986U (en) | A kind of mud and water balance and earth pressure balanced reinforced plastic composite jack pipe machine | |
| CN100386483C (en) | High-performance cement soil continuous wall construction method | |
| CN112031793B (en) | Water-rich sand layer shield tunneling muck improvement construction test method | |
| CN203270642U (en) | Slot milling machine digging-cutting stirring mechanism | |
| CN108868796A (en) | For wearing skyscraper group construction method under the shield sharp radius curve and heavy grade under water-rich sand layer | |
| Qiu et al. | First application of mechanized method using earth pressure balance TBM with large horseshoe-shaped cross section to loess mountain tunnel: A case study of Baicheng tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |