CN107676097B - A kind of high hydraulic pressure soft soil layer HFE composite shield originating method - Google Patents
A kind of high hydraulic pressure soft soil layer HFE composite shield originating method Download PDFInfo
- Publication number
- CN107676097B CN107676097B CN201710746792.0A CN201710746792A CN107676097B CN 107676097 B CN107676097 B CN 107676097B CN 201710746792 A CN201710746792 A CN 201710746792A CN 107676097 B CN107676097 B CN 107676097B
- Authority
- CN
- China
- Prior art keywords
- shield
- steel loop
- portal
- loop device
- freezing
- 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
- 239000002689 soil Substances 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 133
- 239000010959 steel Substances 0.000 claims abstract description 133
- 238000007710 freezing Methods 0.000 claims abstract description 62
- 230000008014 freezing Effects 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000010276 construction Methods 0.000 claims abstract description 23
- 238000013461 design Methods 0.000 claims abstract description 23
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000007596 consolidation process Methods 0.000 claims abstract description 10
- 230000009545 invasion Effects 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 235000015110 jellies Nutrition 0.000 claims abstract description 3
- 239000008274 jelly Substances 0.000 claims abstract description 3
- 238000007789 sealing Methods 0.000 claims description 40
- 230000007306 turnover Effects 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 21
- 239000004519 grease Substances 0.000 claims description 21
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 239000002002 slurry Substances 0.000 claims description 15
- 239000012267 brine Substances 0.000 claims description 10
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 239000003921 oil Substances 0.000 claims description 8
- 238000007569 slipcasting Methods 0.000 claims description 8
- 230000005641 tunneling Effects 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 claims description 3
- 239000000155 melt Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- 238000005461 lubrication Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004904 shortening Methods 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 3
- 238000010257 thawing Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005728 strengthening Methods 0.000 abstract description 6
- 238000001556 precipitation Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 9
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 241000251468 Actinopterygii Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004537 pulping Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000002435 tendon Anatomy 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
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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
- E21D9/0635—Tail sealing means, e.g. used as end shuttering
-
- 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
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
- E21D9/0671—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end with means for consolidating the rock in front of the shield by injection of consolidating substances through boreholes
-
- 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)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Soil Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The present invention relates to shield-tunneling construction fields, specially a kind of high hydraulic pressure soft soil layer HFE composite shield originating method, solves soft soil layer shield launching reception technique problem under high water pressures, comprising the following steps: require construction rotary jet strengthening according to design drawing；It constructs freezing pipe and thermometer hole, lays thermometric line, freezing equipment and start to freeze after freezing pipeline installation and debugging；Shield launching prepares；External steel loop device is connected with outside portal steel loop；Shield launching preparation is completed and abolishes portal building enclosure after consolidation by freezing；Shield machine jacking forward；Shield machine working face builds pressure；Freezing pipe is pulled out in driving profile, remaining freezing pipe, which works on, applies jelly；External steel loop device alien invasion welds arc panel, starts synchronous grouting after shield machine is completely into external steel loop device, and completion originates driving.That present invention is particularly suitable for heads is high, water is big, does not have in the soft soil layer for originate precipitation condition that advantage is particularly evident, and promotion prospect is good.
Description
Technical field
The present invention relates to shield-tunneling construction field, specially a kind of high hydraulic pressure soft soil layer HFE composite shield originating method.
Background technique
China's rail traffic in recent years is grown rapidly, and various regions select this cleaning, comfortable, efficiently large conveying quantity transport one after another
Tool solves the problems, such as urban congestion, ends for the end of the year 2015, and operation, 44 city rails are opened in totally 26 urban track traffics in the whole nation
Traffic programme is granted, and planning route is in large scale, construction project is various, the feature that shield method is safe and efficient with its, adaptable
As a kind of the most commonly used running tunnel construction method.
With the maturation of Shield Construction Technique and the accumulation of construction experience, security performance is gradually increased, but shield launching
The greateset risk point of shield-tunneling construction is remained with receiving, shield launching receives accident and emerges one after another over the years, serious or even flood
Do not have shield machine and station, section, causes very big economic loss, jeopardize personnel safety, in rich water soft soil area near a river, level of ground water
Height, underground pore water is abundant, and the self-stable ability of the country rock soil body is poor, and weak soil cutterhead does not have diaphram wall and abolishes ability, needs
Portal diaphram wall is manually abolished, originate and receives risk is especially prominent.
Summary of the invention
In order to solve soft soil layer shield launching reception technique problem under high water pressures, the present invention provides a kind of works
The high hydraulic pressure soft soil layer composite shield originating method that skill is simple, method is novel, technologically advanced, security performance is high.
Suitable for the shield launching of water rich strata, especially head is high, water is big, does not have and originates the soft of precipitation condition
Advantage is particularly evident in soil layer, by optimizing combination to traditional reinforcing mode and portal sealed waterproof device, utilizes height
Pressure rotary-spraying (High pressure jet grouting pile) stake reinforces stratum self-stability, reduces lateral Water And Earth Pressures；It utilizes
Freezing (Freezing method) isolation underground water ensures that portal abolishes safety；Utilize the external steel loop device (The of portal
External ring) hermetic seal in shield launching, reduce shield launching and receive risk, forms multiple defence line, advantage is mutual
It mends, reduces the weak link originated in scheme, reduce shield launching risk, referred to as a kind of high hydraulic pressure soft soil layer HFE combined type
Shield launching method.
Originating method of the present invention the following steps are included:
S1, added according to hydrological geological conditions and Water And Earth Pressures calculating to high-pressure rotary-spray is carried out within the scope of 3 meters on the outside of shield machine
Gu；It is required according to design drawing, work out arrangement and method for construction and carries out test pile, construction parameter is determined according to test pile result and is applied
Work reduces rotary jet strengthening body intensity as far as possible on the basis of meeting design requirement, tunnels convenient for the later period；
S2, it is required according to overall design to progress Deepen Design is freezed, according to design arrangement freezing pipe and thermometer hole, thermometer hole
Interior laying thermometric line, freezing equipment and freezes to start to freeze after pipeline installation and debugging；
S3, the end soil body reinforced is checked, it is ensured that foundation bearing capacity is opened after meeting lifting appliance construction safety
The assembling of beginning shield machine is completed at the same time counter-force and supports and carry out shield launching preparation after starting assembled negative endless tube piece；Complete shield machine
Complete machine assembly and adjustment and the installation and debugging such as vertical transit system and horizontal transportation system, mud disposal system, pulping system, it is above-mentioned
Refrigeration system actively freezes during work, completes counter-force and supports and form shield launching state after starting assembled negative endless tube piece；
S4, when slurry shield originates, need to be connected with external steel loop device outside main body portal steel loop AT STATION；
S5, shield launching preparation are completed and consolidation by freezing reaches design effect and keeps after stablizing, and are abolished portal and are enclosed
Protection structure；After shield launching preparation is completed and consolidation by freezing reaches design effect, piecemeal, layering, from the inside to surface, on to
Under mode abolish portal building enclosure, native side reinforcing bar is met in reservation, and portal continues maintenance and freezes during abolishing, and carries out frost table
Heat preservation；
S6, for ensure sealing effect and shortening build pressure the time, portal is abolished finish and clear up after the completion of external steel loop fill
It sets and smears lubrication seal grease in the airtight cavity to be formed；
S7, external steel loop device (3) lubricant grease continue assembled negative ring after the completion of smearing, by shield machine (6) jacking forward,
Before shield machine (6) enters portal, lubricating oil is applied on the outside of cutterhead periphery and cord rubber slab, in case shield machine (6) cutterhead scratches
Cord rubber slab influences sealing effect, while to ensure freezing pipe safety, shield machine (6) is moved forward to 20cm before freezes body
Position stop jacking；
S8, pressure is built to its working face after shield machine is advanced to predetermined position；
S9, after mud hydraulic pressure is established, ensures external steel loop device sealing effect, can start to freeze in driving profile
Pipe is pulled out, remaining freezing pipe continues to freeze；
S10, shield launching stage driving should slowly steer a steady course, and fltting speed control is in 10mm/min hereinafter, when pick
It proceeds to shield body and fully enters external steel loop device, shield tail edge is slightly more forward than external steel loop device alien invasion, external steel loop dress
Set pause driving before hole circle brush intersects with only pulpboard but is not yet detached from；
S11, after shield machine shield tail is completely into portal, when the rubber water-proof door curtain made of cloth and pressing plate and section of jurisdiction outer wall contact, by
Instantaneously expand in gap drop, to prevent external steel loop device ventral brush and rubber heavy curtain from turning up and causing seal failure, shield tail into
Enter in one circle arc panel of external steel loop device alien invasion welding after external steel loop device, by gap between external steel loop device and section of jurisdiction
It is blocked, wadding quilt can be filled between arc panel and ventral brush when necessary, plug, which fills out object, can not influence ventral brush rebound, it is ensured that shield tail passes through
External steel loop device moment, sealing effect between external steel loop device and section of jurisdiction；
S12, continue slowly to push ahead shield machine, when shield machine completely into external steel loop device and is detached from shield tail 1
Start synchronous grouting after~2 rings；
S13, shield machine shield body fully enter portal steel loop and complete that notch hydraulic pressure is gradually increased extremely after portal reinforces slip casting
Calculated value, completion originate driving, stop Freezing Station operating, remaining freezing pipe are pulled out, into normal tunneling construction.
Shield machine working face is built after pressure refers to the injection of external steel loop device closed chamber grease in step S8, carries out shield
The muddy water of machine builds pressure.External steel loop device closed chamber grease injection is first carried out, when cutterhead is advanced to predetermined position, with greasing Guan Lian
It connects external steel loop device and reserves greasing hole and grease distributing valve, open greasing gate valve, make grease from the reserved note of external steel loop device
Rouge hole is injected in external steel loop device, its gap is filled up；To prevent portal percolating water, mud hydraulic pressure being avoided to lose, grease injection
Pressure should be greater than notch hydraulic pressure, form overflow；Further, after grease injection reaches predetermined pressure, mud tube is opened, gradually
It raises and excavates storehouse liquid level, observe external steel loop device spillage situation, suspend mud injection if spillage, continue to fill at spillage
Grease steps up notch hydraulic pressure if portal reaches sealing effect, to ensure external steel loop device sealing effect, when building pressure
Notch mud hydraulic pressure can be reduced as far as possible in allowed limits, reduce pressure of the muddy water to external steel loop device, notch muddy water pressure
Power forbids the pressure voltage more than portal cord rubber.
Freezing pipe is pulled out comprising the following contents in step S9 or step S13:
A, it is that 100~150kw electrothermal tube heats salt water that general power is installed in brine tank；
B, it is a batch with every 2~3 groups of freezing pipes, recycles hot salt brine in freezing pipe or thermometer hole；
C, when frozen soil melts 3~5cm around freezing pipe, loosening freezing pipe is pulled out with casing puller or very heavy jack-up in time；
D, the freezing pipe loosened is quickly extracted with crane；
E, clay or low-grade cement mortar sealing of hole are used after tube drawing.
Step S12 slip casting uses cement, waterglass dual slurry, cement slurry and waterglass volume ratio 1:0.5, cement pulp-water ash
Than 1:1, step S12 slip casting uses cement, waterglass dual slurry, grouting pressure value are as follows: 0.1~0.3MPa, slip casting measure ring
1.3~1.8 times of shape critical gap theory volume.And need to control the outlet pressure of dual slurry injection in injection process, it avoids pair
Shield tail damages.
External steel loop device is enough at first and the second road sealing device are by twice rubber by three seal structures in step S4
Glue sealing plate, the composition such as turnover panel, Circular Plate, washer and bolt.Three seals are using the sealing of welding shield tail brush, shape on the outside of steel loop
At two airtight cavities, the greasing hole with gate valve is reserved between external two closed chamber of steel loop device.
External steel loop device includes steel loop, and both ends are respectively arranged with first annular face along shield machine tunneling direction on the inside of steel loop
Plate and third annular panel, steel loop middle inside position are provided with the second annular panel, first annular panel and the second annular surface
Plate is connected separately with rubber heavy curtain and turnover panel, and turnover panel setting is in rubber curtain backstage side and the two is connects, third annular surface
Plate is connected with wire brush and sealing plate, and steel loop has oil addition hole, first annular panel, the second ring between annular panel
Shape panel is identical with the structure of third annular panel, and its internal diameter is identical as the internal diameter of the pre-buried steel loop of portal, on annular panel
It is provided with the bolt hole connecting with rubber heavy curtain and turnover panel, turnover panel includes fixed plate, axis and folding pressing plate, is provided with spiral shell in fixed plate
Keyhole, folding pressing plate are hinged in fixed plate by axis, and wire brush includes U-shaped steel board head, are provided in U-shaped steel board head
High-strength steel tow, the both ends of high-strength steel tow are provided with zinc-plated reinforcement steel plate.
The present invention utilizes high-pressure rotary jet grouting pile by optimizing combination to traditional reinforcing mode and portal sealed waterproof device
Reinforce stratum self-stability, reduce lateral Water And Earth Pressures；Using freezing isolation underground water, ensure that portal abolishes safety；Utilize hole
Steel loop device hermetic seal in shield launching is connect outdoors, reduce shield launching and receives risk, forms multiple defence line, advantage is mutual
It mends, reduces the weak link originated in scheme, reduce shield launching risk, simple process, method are novel, technologically advanced, safe
Performance is high；The present invention is suitable for all water rich stratas and originates, but head is high, water is big, does not have and originates precipitation condition
Advantage is particularly evident in soft soil layer, technologically advanced, applied widely, practical, and promotion prospect is good.
Detailed description of the invention
Fig. 1 is floor map of the present invention；
Fig. 2 is longitudinal profile schematic diagram of the present invention；
Fig. 3 is that shield machine of the present invention enters external steel loop schematic device；
Fig. 4 is that shield machine of the present invention enters detail drawing at external steel loop device portal；
Fig. 5 is that soft soil layer slurry shield extra long distance tunnels combined type cutter head structure schematic diagram；
Fig. 6 is the utility model structure section schematic diagram；
Fig. 7 is external steel loop apparatus structure section drawing；
Fig. 8 is external steel loop apparatus structure elevational schematic view；
Fig. 9 is external steel loop device turnover panel front view；
Figure 10 is external steel loop device turnover panel side view；
Figure 11 is external steel loop device wire brush drawing.
In figure: 1- rotary jet strengthening, 2- consolidation by freezing, the external steel loop device of 3-, 4- portal building enclosure, 5- cutterhead, 6- shield
Structure machine, 7- freezing pipe, 8- thermometer hole, 9- main body portal, 10- stop pulpboard, 11- arc panel, the section of jurisdiction 12-, 13- cord rubber slab,
The hole 14- circle brush, the pre-buried steel loop of 3.1- portal, 3.2- shield machine outer diameter, the external steel loop device of 3.3- portal, 3.4- rubber heavy curtain,
3.5- turnover panel, 3.6- wire brush, 3.7- oil addition hole, the section of jurisdiction 3.8- outer diameter, 3.9- stiffener plate, the high-strength spiral shell of 3.10a- double end
Bolt, 3.10b- high-strength bolt, 3.11- fixed plate, 3.12- axis, 3.13- folding pressing plate, the zinc-plated reinforcement steel plate of 3.14-, 3.15-
High-strength steel tow, 3.16-U shape steel plate clamp, the first annular panel of 3.17a-, the annular panel of 3.17b- second, 3.17c- third
Annular panel, 3.18- steel loop, 3.19- sealing plate, 5.1- cutterhead body, 5.2- cutterhead spoke, 5.3- cutter head panel, in 5.4-
Heart fish tail knife, 5.5- serrated knife, 5.6- cutter, 5.7- edge blade, 5.8- shell knife, 5.9- hobboing cutter, 5.10- abrasion detection dress
It sets, 5.11- mud scour hole, 5.12- alloy wear-resisting plate, 5.13- reinforcing rib.
Specific embodiment
In conjunction with attached drawing, further description of the specific embodiments of the present invention:
A kind of high hydraulic pressure soft soil layer (HFE) composite shield originating method as shown in Figure 1 to 4 is suitable for all
Water rich strata originates, but head is high, water is big, does not have in the soft soil layer for originate precipitation condition that advantage is particularly evident,
The originating method the following steps are included:
S1, strengthening length, under normal circumstances, shield (left and right line) outer diameter are calculated according to hydrological geological conditions and Water And Earth Pressures
Outside 3.0m, is stabilization zone within the scope of bottom, each 3.0m in top, and strengthening length is abolished rear Water And Earth Pressures according to portal and calculated, guarantees
The soil body after reinforcing need to have good uniformity and self-support stability, and 28 days unconfined compressive strengths of soil mass consolidation reach
1.0Mpa or more, coefficient of permeability K≤1 × 10-7cm/s.
High-pressure rotary-spray construction is required according to design drawing, work out arrangement and method for construction and carries out test pile, is determined according to test pile result
Construction parameter is simultaneously constructed, and reduces rotary jet strengthening body intensity as far as possible on the basis of meeting design requirement, is tunneled convenient for the later period；
S2, it is required to carry out Deepen Design to consolidation by freezing 2 according to overall design, according to design arrangement freezing pipe 7 and thermometer hole
8, it lays thermometric line in thermometer hole 8, freezing equipment and freezes to start to freeze after pipeline installation and debugging；It is required according to overall design
To progress Deepen Design is freezed, while satisfaction construction needs, freeze in line with scientific and reasonable, economic pragmatic principle arrangement
Pipe.Shield launching is respectively arranged 2 row's freezing holes, the freezing hole of single end 34, hole on the outside of the line starting end head diaphragm wall of left and right
Spacing 750mm.In order to accurately grasp the state of development of freezing curtain, within the scope of curtain is freezed to enclose in each end and design is freezed
Volume edges arrange thermometer hole, lay thermometric line, 3 thermometer holes of setting are reinforced in specific implementation, thermometric hole site can be according to survey
Oblique actual conditions are arranged.
Specific construction technology are as follows: Equipment Foundations setting-out → construction equipment basis → equipment is in place, levels, fixation → laying
Cable → installation electric-control system → refrigerator leak test → refrigerator fills fluorine, oiling → cooling pond water filling → salt dissolving water → refrigeration system
System test running → brine tank and refrigerator low-temperature (low temperature) vessel and pipeline heat insulation.
Freezing Station pipeline mounting process are as follows: main line setting-out → installation pipe support → installation main line → installation branch line →
Pressure is installed and temperature point → pipeline leak test → saline line is kept the temperature.
When freezing equipment carries out debugging and test running after the installation is completed.In test running, pressure, temperature etc. are adjusted at any time
Each state parameter runs unit under the conditions of in relation to the technical parameter of technological procedure and design requirement.It is fixed in freezing process
When detection brine temp, brine flow and frozen soil wall spread scenarios, adjust freezing system operating parameter when necessary.Freezing system fortune
Enter after becoming a full member often and actively freeze, it is desirable that brine temp is down to -25 DEG C or less in one week.
S3, complete 6 complete machine assembly and adjustment of shield machine and vertical transit system and horizontal transportation system, mud disposal system,
The installation and debugging such as pulping system, refrigeration system actively freezes during above-mentioned work, installs reaction frame and starts assembled negative endless tube piece
Shield launching state is formed after 12；
S4, when slurry shield originates, need to be connected with external steel loop device 3 outside 9 steel loop of main body portal AT STATION；
After S5, shield launching preparation are completed and consolidation by freezing 2 reaches design effect, piecemeal, layering, from the inside to surface,
Mode from top to bottom abolishes portal building enclosure 4, and native side reinforcing bar is met in reservation, and portal 4 continues maintenance and freezes, does during abolishing
The leakage face heat preservation in vitro of good consolidation by freezing 2.
S6, portal 4 are abolished finish and clear up after the completion of smear hand in external steel loop device 3 and put the oil rouge.
S7, external 3 hand of steel loop device, which are put the oil after the completion of rouge is smeared, continues assembled negative endless tube piece 12, by shield machine 6 to sinciput
Into, before shield machine 6 enters portal, lubricating oil is applied on the outside of 5 periphery of cutterhead and external 3 cord rubber slab 13 of steel loop device, in order to avoid
5 hanging breaking cord rubber slab 13 of cutter head of shield machine influences sealing effect, and to ensure 7 safety of freezing pipe, shield body is moved forward to freezes body 2
Preceding 20cm stops jacking.
S8,6 working face of shield machine build pressure.
S9, after mud hydraulic pressure is established, ensures external 3 sealing effect of steel loop device, can start to tunnel the interior jelly of profile
Knot pipe 7 is pulled out, remaining freezing pipe 7 continues to freeze.
S10, shield machine 6 slowly tunnel steadily, fully enter external steel loop device 3 when tunneling to shield body, only 10 side of pulpboard
Edge is slightly more forward than external 3 alien invasion of steel loop device, and external 3 hole of steel loop device circle brush 14 intersects but is not yet detached from only pulpboard 10
Preceding pause driving.
S11, stop after pulpboard 10 enters external steel loop device 3 in shield machine in one circle of external 3 alien invasion of steel loop device welding
Arc panel 11 blocks gap between external steel loop device 3 and section of jurisdiction 12, when necessary can be between arc panel 11 and hole circle brush 14
Wadding quilt is filled in, plug, which fills out object, can not influence 14 rebound of hole circle brush, it is ensured that shield tail passes through external steel loop device 3 of external steel loop device moment
With the sealing effect of section of jurisdiction 12.
S12, continuation are slowly pushed ahead steadily, when shield tail fully enters external steel loop device 3, and disengage 1 ~ 2 ring of shield tail
After start synchronous grouting.
S13, shield body 6 fully enter 9 steel loop of portal and complete that notch hydraulic pressure is gradually increased to theory after portal reinforces slip casting
Calculated value, completion originate driving, stop Freezing Station operating, pull out remaining freezing pipe 7, originate driving and complete, into normal driving
Construction.
The step S8 excavation face builds briquetting containing the following contents:
(1) external 3 closed chamber grease of steel loop device injection
When cutterhead is advanced to predetermined position, external steel loop device is connected with greasing pipe and reserves greasing hole and grease distributing valve,
Greasing gate valve is opened, so that grease is reserved greasing hole from external steel loop device 3 and injects in external steel loop device 3, fill up its gap；For
Prevent 9 percolating water of portal, mud hydraulic pressure is avoided to lose, grease injection pressure should be greater than notch hydraulic pressure, form overflow.
(2) muddy water builds pressure
After grease injection reaches predetermined pressure, mud tube is opened, lifting step by step excavates storehouse liquid level, observes external steel loop device
3 spillage situations suspend mud injection if spillage, continue to fill grease at spillage, if portal 9 reaches sealing effect, by
Step improves notch hydraulic pressure can reduce notch to ensure external 3 sealing effect of steel loop device as far as possible in allowed limits when building pressure
Mud hydraulic pressure reduces muddy water to the pressure of external steel loop device 3, and notch mud hydraulic pressure is forbidden resistance to more than 9 cord rubber of portal
Pressure value.
Step S9, the S13 freezing pipe 7 is pulled out comprising the following contents:
A, it is that 100~150kw electrothermal tube heats salt water that general power is installed in brine tank.
B, it is a batch with every 2~3 groups of freezing pipes 7, recycles hot salt brine in freezing pipe 7 or temperature tube 8.
C, it when frozen soil melts 3~5cm around freezing pipe, is pulled out with casing puller or very heavy jack-up in time and is loosened freezing pipe 7.
D, the freezing pipe 7 loosened is quickly extracted with crane.
E, clay or low-grade cement mortar sealing of hole are used after tube drawing.
The step S12 originates synchronous grouting and selects cement slurry, waterglass dual slurry, controls dual slurry in injection process
The outlet pressure of injection avoids damaging shield tail.
As shown in figure 5, the present invention tunnels combined type cutter head structure using novel soft soil layer slurry shield extra long distance,
Reinforcing rib 5.13 is connected with using the composite structure of cutterhead spoke 5.2 and cutter head panel 5.3, and between the two, on cutterhead body 1
Center fish tail knife 5.4, serrated knife 5.5, cutter 5.6, edge blade 5.7, shell knife 8, hobboing cutter 9 are installed, tunneling boring is carried out to tunnel
It excavates, it can be achieved that positive and negative bidirectional rotation；According to different geology operating conditions, center fish tail knife 5.4 and serrated knife 5.5 can whole or portions
Divide and is replaced with hobboing cutter 5.9.The aperture opening ratio of cutterhead body 5.1 about 37%, compound design can provide the machinery branch to face
Support, integral strength and rigidity meet the driving requirement of tunneling boring hard rock, increase the reliability of cutterhead body 5.1, while can prevent
Big partial size boulder enters to excavate cabin and formed and block.
1 front of cutterhead body be equipped with continous way wear detector 5.10, can the wear condition to cutter effectively examined
It surveys, cutterhead outer ring is welded with embedded alloy wearing plate 5.12, in addition to wear-resisting functions, moreover it is possible to guarantee the diameter of cutter head 5.1.Cutterhead master
64 cutters 5.6 are installed, including 2 both ends of cutterhead spoke are grown along it and cut to being symmetrically arranged with 48 on the cutterhead spoke 5.2 of body 1
Cutter 5.6,5.6 side heap of cutter is welded with latticed wear-resisting for the 16 of knife 5.6 and the interior setting suitable for reading of 3 Y shape of cutter head panel
Layer is conducive to protect cutter corner and reduces abrasion；Blade can be extended using the design of large-sized three rows wearable hard alloy
Cutter life；Segment design is 5 degree of horn structure forms of band, effectively increases the ability of the cutting removing quarrel soil of cutter 5.6；
In the fringe region close to cutterhead body 5.1, the quantity of cutter arrangement is increased, the service life of edge blade 5.7 is improved.
It is disposed with 29 shell knives 5.8 on the panel of cutterhead 5.1, is set respectively on the cutter head panel 5.3 including one, three quadrant
It is equipped with 6 shell knives 5.8, two, be respectively arranged with 4 shell knives 5.8 on the cutter head panel 5.3 of four-quadrant, in addition in cutterhead spoke
The 9 of item 5.2 and 5.1 outer rim of cutterhead body are shell knife 5.8.Wherein, it is connect positioned at cutterhead spoke 5.2 and 5.1 outer rim of cutterhead body
The 9 of position are touched shell knife 5.8, including the marginal position at three of cutterhead spoke 5.2 each 2 is shell knife 5.8, cutterhead spoke at one
5.2 in marginal position 3 shell knife 5.8, amount to 9, all 5.8 sizes of shell knife are identical, and height is 160mm, shell
Knife 5.8 can carry out removing to quarrel soil and be crushed, and improve the mobility of quarrel soil；Blade is using three row's alloys of the big alloy in both ends and centre
Combination Design, has very high impact resistance and wear-resisting property, and cutter hub surrounding build-up wear-resistant layer can prevent cutter hub to be cut
The erosive wear of soil.
5.1 edge of cutterhead body installation 16 is edge blade 5.7, including cutter head panel 5.3 and cutterhead outer rim contact position
8 and 8 of cutterhead spoke 5.2 and cutterhead outer rim contact position, quarrel of the edge blade 5.7 to clear up periphery excavation
Soil prevents the direct abrasion of 5.1 outer rim of cutterhead body, guarantees the precision of digging diameter, and blade is large-sized wear-resisting using three rows
Hard alloy, can tool life.
Cutterhead body 5.1 configures 8 on cutter head panel 5.3 and hobboing cutter 5.9 is revolved with reducing to originate with the high pressure of intermediate vertical shaft
The abrasion of spray reinforcing body and the concrete element wall that may be used to 5.1 cutter of cutterhead body.Serrated knife 5.5, shell knife 5.8, cutter
5.6 height successively reduce, and successively contact face, reduce knife disc tool abrasion, cutterhead spoke 5.2 is in 5.6 interstitial site of cutter
It is provided with mud scour hole 5.11.
Number of changing knife can be effectively reduced using the utility model, extend cutterhead service life, raising drivage efficiency, reduction construction wind
Danger, has a large promotion value.
The external mounted shield launching portal hermetic seal device as shown in Fig. 6~Figure 11, by close by twice turnover panel heavy curtain
It seals and lengthens three seals two seal cavities of formation that wire brush sealing is constituted with together with, cavity internal pressure grease injection when originating, really
Confidential letter effect, when shield launching is sealed by portal, the propulsion of rubber heavy curtain, the bending direction of turnover panel and wire brush and shield
Direction is consistent, with the substances such as water, sand or slurries flow direction on the contrary, Water And Earth Pressures act on rubber heavy curtain and wire brush, heavy curtain and
Wire brush stirrup shield body or section of jurisdiction and grease play sealing function jointly.
External mounted shield launching portal hermetic seal device includes the pre-buried steel loop 1 of matched portal, the external steel loop dress of portal
It sets 3.3, twice rubber heavy curtain 3.4, twice turnover panel 3.5, wire brush 3.6, oil addition hole 3.7, sealing plate 3.19 and reinforces
Gusset 3.9 forms, and lengthens the sealing of wire brush 3.6 with together with by twice turnover panel 3.5, the sealing of rubber heavy curtain 3.4 and forms two sealings
Cavity.It, can be by oil addition hole 3.7 to cavity internal pressure grease injection, it is ensured that sealing effect when originating.
The pre-buried steel loop 1 of portal pours integral, the diameter and shield of the pre-buried steel loop 1 of portal by dowel with station main structure
Structure machine outer dia matches, when originating, the pre-buried steel loop 3.1 of portal 200 ~ 300mm usually big compared with shield machine；The pre-buried steel loop of portal
3.1 back sides are arranged parallel to the flange of metope, reserve 72 24 bolts hole of φ on flange, are uniformly distributed with 5 ° of angles along flange,
The pre-buried steel loop 3.1 of portal and flange thickness preferably thickness 16mm, can slightly adjust according to shield machine diameter, when shield machine diameter compared with
When big, the pre-buried steel loop 3.1 of portal and flange thickness can be increase accordingly.
The annular panel that the external steel loop device 3.3 of portal is located at 3.18 inside of steel loop by three pieces is welded, annular panel
Including first annular panel 3.17a, the second annular panel 3.17b and third annular panel 3.17c, structure is identical, and thickness is equal
For 16mm, internal diameter is identical as the pre-buried steel loop 3.1 of portal, 3.18 width 700mm of steel loop contained by the external steel loop device 3.3 of portal, the
One annular panel 3.17a, the second annular panel 3.17b, third annular panel 3.17c and 3.18 thickness of outside steel loop are
20mm, first of annular panel 3.17a and the second annular panel 3.17b are provided with bolt hole, bolt pore size, position and portal
Connecting hole on pre-buried steel loop 3.1 matches, second annular panel 3.17b, third road annular panel 3.17c and steel loop 3.18
Between be evenly arranged 24 pieces of stiffener plates 3.9 respectively.
Turnover panel 3.5 is made of fixed plate 3.11, axis 3.12 and folding pressing plate 3.13, with a thickness of 20mm, width and length
It is determined according to shield machine size, fixed plate 3.11 is separately fixed at the annular panel 3.17b of first annular panel 3.17a and second
On, folding pressing plate 3.13 can be rotated along axis 3.12, and shield machine forms rigid support after rubber heavy curtain 3.4 after tunneling forward,
Prevent rubber heavy curtain 3.4 from turning over.
By the 3.14 inner clip high-strength steel tow 3.15 of zinc-plated reinforcement steel plate of wide 100mm, thickness 1mm, one end passes through wire brush 3.6
The fixed wire brush 3.6 for being integrated into 100mm wide of U-shaped steel board head 3.16, U-shaped steel plate 3.16 thickness 4mm, long 176mm, steel tendon
3.15 length is determining according to the external steel loop device 3.3 of portal and section of jurisdiction gap, preferred length 60mm.
External mounted shield launching portal hermetic seal device passes through double end high-strength bolt 3.10a and the pre-buried steel loop 3.1 of portal
The intermediate of connection, the pre-buried steel loop 3.1 of portal and first annular panel 3.17a installs rubber heavy curtain 3.4, first of annular panel
Installation turnover panel 3.5 forms first of rubber turnover panel heavy curtain sealing, 3.18 outside of steel loop and the pre-buried steel loop 3.1 of portal on the outside of 3.17a
Between welding 16 pieces of triangle gussets 3.9 reinforced, triangle gusset 3.9 is uniformly distributed；The sealing of second rubber turnover panel heavy curtain is fixed
On the second annular panel 3.17b, according to the second annular panel 3.17b, rubber heavy curtain 3.4, fixed ring flat-plate, turnover panel 3.5 it is suitable
Sequence is fixed by high strong ties bolt 3.10b；Wire brush 3.6 is connected by welding to 3.17c on third annular panel, forms the
The sealing of three wire brushes.Oil addition hole 3.7 makes at the scene, determines position as needed.
Sealing plate 3.19 stops pulpboard in shield tail and has just enter into the external steel loop device 3.3 of portal but wire brush 3.6 with only pulpboard still
Without departing from when, be welded on wire brush U-shaped steel board head 3.16, wherein sealing plate thickness 10mm, width is according to external ring 3.3 and pipe
Piece gap determines.
In use, the bottom of rubber heavy curtain 3.4 and turnover panel 3.5 is contacted with shield machine outer diameter 3.2, sealing plate 3.19 and section of jurisdiction
Outer diameter 3.8 contacts, and ensures to seal with this, reaches water-stagnating effect.
Combined type cutterhead is tunneled by soft soil layer slurry shield extra long distance and the sealing of external mounted shield launching portal stops
The utilization of water installations is more conducive to guaranteeing that high hydraulic pressure weak soil base composite shield of the invention originates safety.
Claims (7)
1. a kind of high hydraulic pressure soft soil layer HFE composite shield originating method, which comprises the steps of:
S1, it is calculated according to hydrological geological conditions and Water And Earth Pressures to carrying out subsidence pressure circle spray reinforcement within the scope of 3 meters on the outside of shield machine
(1)；
S2, construction freezing pipe (7) and thermometer hole (8), lay thermometric line, freezing equipment and freeze to open after pipeline installation and debugging
Beginning freezes；
S3, the end soil body reinforced is checked, it is ensured that foundation bearing capacity starts shield after meeting lifting appliance construction safety
The assembling of structure machine is completed at the same time counter-force and supports and carry out shield launching preparation after starting assembled negative endless tube piece；
S4, when slurry shield originates, need to be connected with external steel loop device (3) outside main body portal (9) steel loop AT STATION；
S5, shield launching preparation are completed and consolidation by freezing (2) reaches design effect and keeps after stablizing, and are abolished portal and are gone along with sb. to guard him
Structure (4)；
S6, for ensure sealing effect and shortening build pressure the time, portal is abolished finish and clear up after the completion of in external steel loop device (3)
Lubrication seal grease is smeared in the airtight cavity of formation；
S7, external steel loop device (3) lubricant grease continue assembled negative ring after the completion of smearing, by shield machine (6) jacking forward, shield
Before machine (6) enters portal, lubricating oil is applied on the outside of cutterhead periphery and cord rubber slab, in case shield machine (6) cutterhead scratches cord
Rubber slab influences sealing effect, while to ensure freezing pipe safety, shield machine (6) being moved forward to the position of 20cm before freezes body
Set stopping jacking；
S8, pressure is built to its working face after shield machine (6) is advanced to predetermined position；
S9, after shield machine (6) mud hydraulic pressure is established and ensures external steel loop device (3) sealing effect, to driving profile in freeze
Knot pipe (7) is pulled out, remaining freezing pipe (7), which works on, applies jelly；
S10, shield machine (6) originate stage driving and should slowly steer a steady course, and fltting speed control is being no more than 10mm/min, work as pick
It proceeds to shield body and fully enters external steel loop device (3), shield tail edge is slightly more forward than external steel loop device (3) alien invasion, external
Pause driving before steel loop device (3) hole circle brush (14) intersects with only pulpboard (10) but is not yet detached from；
S11, after shield machine (6) shield tail is completely into portal, when the rubber water-proof door curtain made of cloth and pressing plate and section of jurisdiction outer wall contact, in shield
Tail enters after external steel loop device (3) in one circle arc panel (11) of external steel loop device (3) alien invasion welding, and external steel loop is filled
Gap between (3) and section of jurisdiction is set to be blocked；
S12, continue slowly to push ahead shield machine, when shield machine completely into external steel loop device (3) and be detached from shield tail 1~
Start synchronous grouting after 2 rings；
S13, shield machine (6) shield body fully enter portal steel loop and complete that notch hydraulic pressure famous dictum is gradually increased after portal reinforces slip casting
By calculated value, completion originates driving, stops Freezing Station operating, remaining freezing pipe (7) is pulled out, into normal tunneling construction.
2. a kind of high hydraulic pressure soft soil layer HFE composite shield originating method according to claim 1, which is characterized in that
Shield machine (6) working face builds pressure in step S8, after referring to external steel loop device (3) closed chamber grease injection, carries out shield machine
Muddy water builds pressure.
3. a kind of high hydraulic pressure soft soil layer HFE composite shield originating method according to claim 1, which is characterized in that
Freezing pipe (7) is pulled out comprising the following contents in step S9 or step S13:
A, it is that 100~150kw electrothermal tube heats salt water that general power is installed in brine tank；
B, it is a batch with every 2~3 groups of freezing pipes (7), recycles hot salt brine in freezing pipe (7) or thermometer hole (8)；
C, it when freezing pipe (7) surrounding frozen soil melts 3~5cm, is pulled out with casing puller or very heavy jack-up in time and is loosened freezing pipe (7)；
D, the freezing pipe (7) loosened is quickly extracted with crane；
E, clay or low-grade cement mortar sealing of hole are used after tube drawing.
4. a kind of high hydraulic pressure soft soil layer HFE composite shield originating method according to claim 1, which is characterized in that
Step S12 slip casting uses cement, waterglass dual slurry, grouting pressure value are as follows: 0.1~0.3MPa, slip casting measure annular gap
1.3~1.8 times of theoretical volume.
5. a kind of high hydraulic pressure soft soil layer HFE composite shield originating method according to claim 1, which is characterized in that
External steel loop device (3) is made of three seal structures in step S4, first and the second road sealing device it is close by twice rubber
Sealing plate, turnover panel, Circular Plate, washer and bolt composition, three seals form two using welding shield tail brush sealing on the outside of steel loop
Airtight cavity reserves the greasing hole with gate valve between external two closed chamber of steel loop device.
6. a kind of high hydraulic pressure soft soil layer HFE composite shield originating method according to claim 1, which is characterized in that
External steel loop device includes steel loop (3.18), and both ends are respectively arranged with the first ring along shield machine tunneling direction on the inside of steel loop (3.18)
Shape panel (3.17a) and third annular panel (3.17c), steel loop (3.18) middle inside position are provided with the second annular panel
(3.17b), first annular panel (3.17a) and the second annular panel (3.17b) are connected separately with rubber heavy curtain (3.4) and turnover panel
(3.5), turnover panel (3.5) setting is on rear side of rubber heavy curtain (3.4) and the two is to connect, and third annular panel (3.17c) is even
It is connected to wire brush (3.6) and sealing plate (3.19), steel loop (3.18) has oil addition hole (3.7) between annular panel,
First annular panel (3.17a), the second annular panel (3.17b) are identical with the structure of third annular panel (3.17c), and in it
Diameter is identical as the internal diameter of the pre-buried steel loop of portal (3.1), is provided on annular panel and connects with rubber heavy curtain (3.4) and turnover panel (3.5)
The bolt hole connect, turnover panel (3.5) include fixed plate (3.11), axis (3.12) and folding pressing plate (3.13), fixed plate (3.11)
On be provided with bolt hole, folding pressing plate (3.13) is hinged on fixed plate (3.11) by axis (3.12), and wire brush (3.6) includes
U-shaped steel board head (3.16), U-shaped steel board head (3.16) is interior to be provided with high-strength steel tow (3.15), high-strength steel tow (3.15)
Both ends be provided with zinc-plated reinforcement steel plate (3.14).
7. a kind of high hydraulic pressure soft soil layer HFE composite shield originating method according to claim 1, which is characterized in that
Abolished in step S5 portal building enclosure (4) according to piecemeal, layering, from it is inner to mode outside from top to bottom cut into
The building enclosure internal layer cover to reinforcement for carrying on the back native side is cut first, and cuts away reinforcing bar with gas cutting by row, is further cut and is met native side
Cover to reinforcement, until reinforcing steel bars exposed, portal abolish during continues keep consolidation by freezing, carry out frost table heat preservation,
Prevent freezes body from thawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710746792.0A CN107676097B (en) | 2017-08-27 | 2017-08-27 | A kind of high hydraulic pressure soft soil layer HFE composite shield originating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710746792.0A CN107676097B (en) | 2017-08-27 | 2017-08-27 | A kind of high hydraulic pressure soft soil layer HFE composite shield originating method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107676097A CN107676097A (en) | 2018-02-09 |
| CN107676097B true CN107676097B (en) | 2019-09-13 |
Family
ID=61135249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710746792.0A Active CN107676097B (en) | 2017-08-27 | 2017-08-27 | A kind of high hydraulic pressure soft soil layer HFE composite shield originating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676097B (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561138B (en) * | 2018-03-30 | 2021-01-05 | 上海隧道工程有限公司 | Shield interval connecting channel top pipe entering sealed cabin and construction method thereof |
| CN108397203B (en) * | 2018-03-30 | 2020-04-10 | 上海隧道工程有限公司 | Integral type sealing cabin for jacking pipe exiting of shield interval connecting channel and construction method thereof |
| CN108678756A (en) * | 2018-04-27 | 2018-10-19 | 青岛新华友建工集团股份有限公司 | It closes on rivers highly permeable stratum major diameter slurry shield and originates construction safely |
| CN108643933A (en) * | 2018-04-27 | 2018-10-12 | 中铁十二局集团有限公司 | Shield receives portal reinforcement means |
| CN108661655B (en) * | 2018-05-11 | 2020-03-17 | 中铁四局集团有限公司 | Large-section U-shaped earth pressure balance shield tunnel construction method based on U-shaped shield machine |
| CN108843337B (en) * | 2018-06-15 | 2020-02-18 | 中铁十二局集团有限公司 | Construction method for shield launching by using short sleeve |
| CN108729933B (en) * | 2018-06-22 | 2023-05-23 | 中交第二航务工程局有限公司 | Shear-resistant rotary spraying freezing blocking superposition structure for shield tunnel and construction method thereof |
| CN109403987B (en) * | 2018-12-11 | 2023-10-20 | 南京林业大学 | Shield end horizontal freezing and short steel box combined receiving device and construction method |
| CN109779640A (en) * | 2019-02-22 | 2019-05-21 | 中铁隧道集团二处有限公司 | A kind of shield launching portal breaking construction method |
| CN109989759B (en) * | 2019-03-20 | 2020-08-07 | 中铁四局集团有限公司 | Shield initial design and reinforcement method for fine sand layer rich in water powder |
| CN110056364B (en) * | 2019-04-25 | 2024-03-22 | 中铁二院工程集团有限责任公司 | External sealing structure for tunnel boring machine |
| CN110030007B (en) * | 2019-05-06 | 2020-08-21 | 济南城建集团有限公司 | Shield horizontal freezing receiving construction method |
| CN110173268A (en) * | 2019-06-26 | 2019-08-27 | 海南大学 | A kind of shield tunnel end frozen soil wall and ground-connecting-wall joint reinforcement structure and construction method |
| CN110219658B (en) * | 2019-07-25 | 2024-04-12 | 中建八局轨道交通建设有限公司 | Device for preventing shield tunneling machine from head planting and use method thereof |
| CN110821504A (en) * | 2019-12-04 | 2020-02-21 | 中铁十二局集团有限公司 | Water-rich stratum shield starting end rotary spraying and freezing combined reinforcing structure and construction method |
| CN111058851A (en) * | 2019-12-06 | 2020-04-24 | 中交第三航务工程局有限公司南京分公司 | Safe construction method for shield cutter head repair space |
| CN111058860A (en) * | 2019-12-10 | 2020-04-24 | 中铁十四局集团隧道工程有限公司 | Cave opening construction method |
| 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 |
| CN112983445B (en) * | 2021-03-11 | 2023-08-25 | 中铁三局集团华东建设有限公司 | Water-rich sand layer shield starting method and device based on tunnel portal extension ring device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101781993B (en) * | 2010-01-19 | 2012-05-23 | 中铁四局集团第二工程有限公司 | Shield driving construction method for bearing water-rich soil layer |
| CN103527214B (en) * | 2013-11-04 | 2015-11-11 | 南京林业大学 | A kind of horizontal frozen and pipe canopy joint reinforcement metro shield export & import termination and method |
| JP5763740B2 (en) * | 2013-12-17 | 2015-08-12 | サン・シールド株式会社 | How to start the excavator |
| CN104806267B (en) * | 2015-04-29 | 2017-10-03 | 中铁第一勘察设计院集团有限公司 | The shield end reinforcement system and its construction method of land pebble stratum super-front large pipe shed |
| CN105822312B (en) * | 2016-04-15 | 2018-10-09 | 西安建筑科技大学 | The construction method that soil pressure balance shielding structure pressure originates in a kind of Metro Tunnel |
| CN106761785B (en) * | 2016-12-05 | 2018-08-21 | 中交第三航务工程局有限公司 | A kind of subway tunnel shield originates construction technology |
| CN106837362B (en) * | 2017-04-24 | 2023-02-07 | 中铁十八局集团有限公司 | Shield tunneling machine initial construction device and construction method |
-
2017
- 2017-08-27 CN CN201710746792.0A patent/CN107676097B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107676097A (en) | 2018-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107676097B (en) | A kind of high hydraulic pressure soft soil layer HFE composite shield originating method | |
| CN104963334B (en) | Reinforced with slip casting freezing pipe and freeze the construction method that service channel suppresses frozen swell and melt settlement | |
| CN103470267B (en) | The one Rapid Construction of Tunnels technique of growing up | |
| CN104695964B (en) | Subway shield tunnel freeze entering method | |
| CN105201518B (en) | Disassembling method is received in a kind of major diameter slurry balance shield hole | |
| CN109208637A (en) | Increase the construction method of open-cut station newly on the basis of existing tunnel | |
| CN105804761B (en) | Construction method suitable for liquefied sand stratum shield near-distance passing through building | |
| CN104675408B (en) | High hydraulic pressure extra long distance large cross-section tunnel liquid nitrogen freezing system and shield shield tail brush quick change method | |
| CN104806253B (en) | A kind of construction method punched between rectangular top pipe passage | |
| CN105908765B (en) | For protecting the open trench tunnel water sealing structure and construction method of groundwater environment | |
| CN207131404U (en) | Railway tunnel ultra-deep shaft construction freezing method structural system | |
| CN106907164A (en) | A kind of water-bed combination of mine shield tunnel docking structure form and its construction method | |
| CN102619522A (en) | Construction method for subway contact passage | |
| CN205975649U (en) | Freezing pipe curtain steel pipe supporting construction | |
| CN207377565U (en) | Constructing metro tunnel structure containing complicated geological and without shield launching place | |
| CN106121686B (en) | Underground excavation tunnel water stop structure for protecting groundwater environment and construction method thereof | |
| CN111593726A (en) | Joint reinforcement method for underground tunnel penetrating sensitive pipeline of water-rich stratum and butt joint of existing structure MJS + artificial freezing | |
| CN206888992U (en) | A kind of water-bed mine shield tunnel combination docking structure form | |
| CN108843328A (en) | A kind of Metro Connection Passage excavation construction support construction method | |
| CN109296371A (en) | MJS method and horizontal freezing joint reinforcement pressure-bearing rich water arenaceous stratum overlap the system and its construction method that section is worn under station | |
| CN110080789A (en) | A kind of shield sky, which pushes away, spells section of jurisdiction construction | |
| CN102400694A (en) | Reinforcement method for combined part of shield tunnel and mining-method tunnel | |
| CN112855188A (en) | Subway engineering soft soil stratum earth pressure balance shield construction method | |
| CN109026055A (en) | Frost wall building enclosure and its construction method in the construction of portal ring beam | |
| CN116220703A (en) | Construction method for shield in-ground butt joint in strong permeable sand stratum |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |