CN107687344B - A kind of shield machine exchanging shield ventral brush stretches steel loop, sealing structure and replacing options - Google Patents
A kind of shield machine exchanging shield ventral brush stretches steel loop, sealing structure and replacing options Download PDFInfo
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- CN107687344B CN107687344B CN201710662168.2A CN201710662168A CN107687344B CN 107687344 B CN107687344 B CN 107687344B CN 201710662168 A CN201710662168 A CN 201710662168A CN 107687344 B CN107687344 B CN 107687344B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 77
- 239000010959 steel Substances 0.000 title claims abstract description 77
- 238000007789 sealing Methods 0.000 title claims abstract description 35
- 238000010276 construction Methods 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 30
- 229910052742 iron Inorganic materials 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000007569 slipcasting Methods 0.000 claims description 10
- 239000004519 grease Substances 0.000 claims description 7
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000005641 tunneling Effects 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 238000012790 confirmation Methods 0.000 claims 1
- 230000001737 promoting effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 239000004570 mortar (masonry) Substances 0.000 abstract description 8
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 17
- 239000002002 slurry Substances 0.000 description 13
- 239000000463 material Substances 0.000 description 7
- 229920002635 polyurethane Polymers 0.000 description 7
- 239000004814 polyurethane Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 229910000278 bentonite Inorganic materials 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- 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
- E21D9/06—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
- E21D9/08—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)
- Lining And Supports For Tunnels (AREA)
Abstract
The present invention provides a kind of shield machine exchanging shield ventral brush and stretches steel loop, sealing structure and replacing options, the sealing structure includes body, flexible steel loop, jack and the section of jurisdiction being set in body tail portion, sealing brush is additionally provided between section of jurisdiction and tail portion inner wall, jack is set in tail portion, and with the scalable connection in section of jurisdiction, flexible steel loop is set between jack and section of jurisdiction, and flexible steel loop one end is fixedly connected with jack, and the other end extends to section of jurisdiction direction；It can make to be in close contact on the inside of sealing structure and shield tail using the above scheme, guarantee its airtightness, the of simple structure and strong practicability；Using above-mentioned exchanging shield ventral brush method, the spillage situation occurred during exchanging shield ventral brush can be handled, the further expansion of the mortar leakage prevention state of affairs in time, reduce replacing construction.
Description
Technical field
The invention belongs to the maintenance technique fields of Suporting structure, and in particular to a kind of flexible steel of shield machine exchanging shield ventral brush
Ring, sealing structure and replacing options.
Background technique
Existing shield machine may cause shield tail leak by external water pressure during section of jurisdiction Forward or exchanging shield ventral brush
Sand leakage can not carry out so as to cause exchanging shield ventral brush；And since replacing construction is long, may occur again in replacement process
The case where secondary spillage；Leak sand leakage occurs during section of jurisdiction moves forward, section of jurisdiction should be restored immediately, supplement slip casting is carried out to shield tail
It moves forward again afterwards and carries out exchanging shield ventral brush, however for during exchanging shield ventral brush, generation spillage will not allowed easy to handle at this time；In addition,
When shield driving, after disturbance, face is unstable on stratum, and as downtime is longer, underground water enters Tu Cang, Tu Cang pressure
Power is gradually increased；And when replacing ventral brush, part jack can not be pushed up to section of jurisdiction, after shield machine will generate under support pressure
It moves back, to influence the replacement of ventral brush.
Based on technical problem present in the work of above-mentioned shield machine, there has been no relevant solutions；Therefore there is an urgent need to
Seek effective scheme to solve the above problems.
Summary of the invention
The purpose of the present invention is shortcomings present in view of the above technology, propose a kind of shield machine sealing structure, purport
Difficult problem is sealed solving existing shield drive end unit.
The present invention provides a kind of flexible steel loop of shield drive end unit exchanging shield ventral brush, including steel loop ontology and telescopic rod；It is flexible
Bar one end is set in steel loop ontology, and can be along one end stretching motion of steel loop ontology；The other end of steel loop ontology is equipped with installation
Plate, mounting plate are equipped with bolt hole；The other end of telescopic rod is equipped with blocking part.
It further, further include band；Blocking part includes iron plate, elastic component and waterproof case；Elastic component is set to flexible
The telescopic end of bar, waterproof case are set to the outer end of elastic component；Iron plate is arranged along telescopic rod telescopic direction and connects with elastic component
It connects；Band is set on waterproof case, and is connect with waterproof case；Band includes three；Iron plate is with a thickness of 10mm.
Correspondingly, the present invention also provides a kind of shield machine sealing structures, include flexible steel loop；It further include body, very heavy
Push up and be set to the section of jurisdiction in body tail portion；Flexible steel loop is flexible steel loop described above；Between section of jurisdiction and tail portion inner wall
It is additionally provided with sealing brush；Jack is set in tail portion, and with the scalable connection in section of jurisdiction；Flexible steel loop is set to jack and section of jurisdiction
Between；Flexible steel loop one end is fixedly connected with jack, and the other end extends to section of jurisdiction direction.
It further, further include steel plate bundle, steel plate bundle is set to the end of tail portion, and steel plate bundle rearwardly outer inclination
Tiltedly.
Further, sealing brush is shield tail brush, and shield tail brush includes three；Three shield tail brushes along shield machine tunneling direction side by side
It is set between section of jurisdiction and tail portion inner wall.
Further, it is equipped with seal chamber between every adjacent twice shield tail brush, is marked with shield tail grease in seal chamber.
Further, section of jurisdiction includes muti-piece；Muti-piece section of jurisdiction is set in body tail portion；Multiple sections of jurisdiction are set side by side with shield tail brush
It sets.
The present invention also provides a kind of shield machine shield ventral brush replacing options, it is intended to solve existing shield drive end unit exchanging shield ventral brush
Difficult problem.
A kind of shield machine shield ventral brush replacing options are provided, including flexible steel loop described above；It is further comprising the steps of:
S1: grouting behind shaft or drift lining after toward shield machine rear wall blocks shield tail leak, withdraws the support boots being fixed on section of jurisdiction；
S2: the first section of jurisdiction and the second section of jurisdiction in pipe ring on first position are removed, and the support boots on first position are installed
Flexible steel loop；
S3: the old shield tail brush on first position is removed, and judges whether leak；Directly by new shield tail brush if without leak
It is soldered on the position of former shield tail brush, and coats shield tail grease；The stretching of flexible steel loop is then blocked leak position by leak if it exists
It sets, again to grouting behind shaft or drift lining；
S4: the third section of jurisdiction on the second position in pipe ring is moved in former pipe ring on first position, and successively clears up
Shield tail brush on two positions；
S5: being back to step S3 after the shield tail brush cleared up at section of jurisdiction every time, until the shield tail brush at last block section of jurisdiction
It has replaced.
By using above technical scheme, it can be in close contact on the inside of sealing structure and shield tail, guarantee its airtightness,
The of simple structure and strong practicability；It, can be to the spillage situation occurred during exchanging shield ventral brush using above-mentioned exchanging shield ventral brush method
It is handled in time, the further expansion of the mortar leakage prevention state of affairs, reduces replacing construction.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Below with reference to attached drawing, the invention will be further described:
Fig. 1 is a kind of shield machine cross-sectional view of the present invention；
Fig. 2 is Fig. 1 Local C enlarged diagram；
Fig. 3 is a kind of shield machine outer wall construction schematic diagram of the present invention；
Fig. 4 is one enlarged diagram of the part Fig. 3 B state；
Fig. 5 is two enlarged diagram of the part Fig. 3 B state；
Fig. 6 is three enlarged diagram of the part Fig. 3 B state；
Fig. 7 is the flexible steel loop structural schematic diagram of the present invention；
Fig. 8 is the flexible steel loop structural schematic diagram of the present invention；
Fig. 9 is the flexible steel loop structural schematic diagram of the present invention；
Figure 10 is the flexible steel loop structural schematic diagram of the present invention；
Figure 11 is exchanging shield ventral brush pre-structure schematic diagram of the present invention；
Figure 12 is one schematic diagram of exchanging shield ventral brush state of the present invention；
Figure 13 is two schematic diagram of exchanging shield ventral brush state of the present invention；
Figure 14 is three schematic diagram of exchanging shield ventral brush state of the present invention；
Figure 15 is four schematic diagram of exchanging shield ventral brush state of the present invention；
Figure 16 is five schematic diagram of exchanging shield ventral brush state of the present invention；
Figure 17 is six schematic diagram of exchanging shield ventral brush state of the present invention；
Figure 18 is seven schematic diagram of exchanging shield ventral brush state of the present invention；
Figure 19 is a kind of one flow chart of shield machine shield ventral brush replacing options embodiment of the present invention.
In figure: 1, body；2, tail portion；21, shield tail brush；22, steel plate bundle；23, jack；24, section of jurisdiction；25, stretch steel loop；
251, bolt hole；252, iron plate；253, band；254, waterproof case；255, elastic component；256, telescopic rod；257, steel loop ontology；
3, stratum；4, mortar.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Correspondingly, in conjunction with above scheme, as shown in Figure 7 to 10, a kind of shield drive end unit exchanging shield ventral brush stretches
Steel loop, including band 253, steel loop ontology 257 and telescopic rod 256；256 one end of telescopic rod is set in steel loop ontology 257, and
It can be along one end stretching motion of steel loop ontology 257；The other end of steel loop ontology 257 is equipped with mounting plate, and mounting plate is equipped with bolt
Hole 251；The other end of telescopic rod 256 is equipped with blocking part；Further, blocking part includes iron plate 252, elastic component 255 and prevents
Water part 254；Elastic component 255 is set to the telescopic end of telescopic rod 256 along the vertical direction, and waterproof case 254 is set along the vertical direction
It is placed in the outer end of elastic component 255；Iron plate 252 is arranged along 256 telescopic direction of telescopic rod and connects with elastic component 255, mainly rises
To keeping out the impurity pollutions telescopic rod such as mortar；Band 253 is set on waterproof case 254, and is connect with waterproof case 254, sealing
Band 253 includes three；Iron plate 252 with a thickness of 10mm；Sealing can mainly be played the role of.
Preferably, in conjunction with above scheme, as shown in Figures 4 to 6, steel loop overall length fundamental length range of stretching is that h4 is
600mm to 900mm is selected as 880mm in the present embodiment, and wherein hydraulic cylinder tube length 750mm, jack maximum top elongation are reachable
1500mm；Flexible part and two layers of waterproof case on the outside of flexible steel loop iron plate, thickness is 5mm, and elastic component 255 is equipped with elastic material
Material, waterproof case 254 are equipped with waterproof material；Waterproof material surface is more than section of jurisdiction surface 4mm, and there is three seals circle on its surface,
Can be in close contact on the inside of tail portion 2, guarantee its airtightness；During replacing shield machine shield ventral brush, since pressure is excessive or
The slip casting water proof time is inadequate, and shield tail mud is caused to leak, it is therefore possible to use hydraulically extensible steel loop blocks at spillage in time,
Then (bull's eye) infuses polyurethane slurries in the section of jurisdiction of its adjacent ring, reinforces its waterproof effect, after the stopping of spillage situation, by liquid
Pressure stretch contracting steel loop is withdrawn, and continues exchanging shield ventral brush.
As shown in Fig. 1 to Figure 18, the present invention provides a kind of shield machine sealing structure, includes flexible steel described above
Ring；It further include body 1, body 1 includes tail portion 2；Jack 23 is equipped in tail portion 2 and along the section of jurisdiction that body 1 is laterally arranged 24；
Wherein, it is additionally provided with sealing brush between 2 inner wall of section of jurisdiction 24 and tail portion, sealing brush is generally stainless steel wire material and is made；Jack 23
It is horizontally set in tail portion 2 along body 1, jack 23 and the scalable connection in section of jurisdiction 24, to replace sealing brush in shield drive end unit
When, leak in the pipe ring of tail portion can be blocked；By using above-mentioned sealing structure scheme, shield drive end unit is risen
It is acted on to very high sealing, avoids shield machine mortar in headwork from running in tail portion, influence the work of shield machine, cause safety
Hidden danger.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 6, the present invention provides a kind of shield machine sealing structure and further includes
Steel plate bundle 22；Steel plate bundle 22 is bolted the end for being set to tail portion 2；And when in order to make shield machine work, side sand
The mortar 4 of layer 3 is without falling into tail portion 2, and rearwardly 2 outside inclinations tilt the steel plate bundle 22 on tail portion 2, such mortar 4
Outside side throwing under the action of steel plate bundle 22, will not the gap directly between tail portion 2 and section of jurisdiction 24 enter in tail portion 2.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 6, in the present embodiment, sealing brush is shield tail brush 21, shield tail brush
21 include three；Three shield tail brushes 21 are arranged side by side between 2 inner wall of section of jurisdiction 24 and tail portion along shield machine tunneling direction A, and
Seal chamber is equipped between per adjacent twice shield tail brush 21；It, in this way can be effective further, in seal chamber to be marked with shield tail grease
Guarantee shield tail section of jurisdiction behind synchronous grouting slurries will not gap between section of jurisdiction and shield machine leak out, while preventing underground water
It leaks into shield machine, if tail sealing performance is bad, shield-tunneling construction in the case can be adversely affected, situation
There can be huge construction risk when serious, therefore once find the large range of damage of shield tail brush, it is necessary to according to this stratum
The case where, exchanging shield ventral brush is arranged in time.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 6, section of jurisdiction 24 includes muti-piece, and muti-piece can specifically include two
To six pieces；Muti-piece section of jurisdiction 24 is along the tail portion 2 that body 1 is horizontally set at body 1；Muti-piece section of jurisdiction 24 is set side by side with shield tail brush 21
It sets, and shield tail brush 21 in the horizontal direction without departing from the horizontal extent of muti-piece section of jurisdiction 24, i.e. shield tail brush 21 need to be set in section of jurisdiction
In the range of 24, in this way when replacing shield tail brush 21, it is unlikely to that section of jurisdiction is made to leak outside.
Preferably, in conjunction with above scheme, as shown in Figures 1 to 6, the present invention provides a kind of shield machine sealing structure and further includes
Flexible steel loop 25；Flexible steel loop 25 is set between jack 23 and section of jurisdiction 24；Flexible 25 one end of steel loop by bolt with it is very heavy
Top 23 is fixedly connected, and the other end extends to section of jurisdiction direction, in this way when replacing shield tail brush, can pass through liquid if there is leak
Pressure stretch contracting steel loop is flexible, compresses the section of jurisdiction that spillage goes out, and opposite confined space is formed, to be blocked；Further, stretch steel loop
25 are equipped with telescopic rod 256 and bolt hole 251；Telescopic rod 256 extends one end equipped with elastic component 255 and waterproof to 2 direction of section of jurisdiction
Part 254, elastic component 255 are equipped with elastic material, and waterproof case 254 is equipped with waterproof material；Waterproof case 254 is set to elastic component
255 outside；256 upper end of telescopic rod is additionally provided with iron plate 252 and band 253；Band 253 is set to the upper of waterproof case 254
End；Further, the connection on 252 one end of iron plate and elastic component 255, the other end is to flexible 25 bolt hole of steel loop, 251 one end
Extend；Band 253 is fixed on waterproof material, and length is equal to the width of waterproof material, and 253 one end of band and waterproof
Part 254 connects, and the other end extends to flexible 25 bolt hole of steel loop, 251 one end, and rides upon on iron plate 252, and iron plate 252 is long
In band 253.
Preferably, in conjunction with above scheme, as shown in Figures 4 to 6, in the present embodiment, sealing brush is shield tail brush 21, shield tail brush
21 include three；Section of jurisdiction 24 includes the first endless tube piece III, the second endless tube piece II and third endless tube piece I；According to first of shield tail
The position dimension apart from jack 23 is brushed, needing (reserving) to remove the first endless tube piece III just exposes shield tail brush, and jack is maximum
Stroke is 2000mm(distance containing jack itself), mounting distance h1 of first of shield tail brush away from jack is 2000mm, third
Mounting distance h2 of the road shield tail brush away from jack is 2865mm, itself distance h5 distance of jack is 1160, adjacent twice shield
Ventral brush distance h3 is 325mm；For the section of jurisdiction 1200mm, jack at least needs to stretch out 1750mm；For the section of jurisdiction 1500mm, at least
Need to stretch out the installation site that 2000mm(each depends on section of jurisdiction)；If being 2000mm with jack maximum elongation distance, it is not enough to
Expose first of shield tail brush, therefore elongated distance can be carried out in conjunction with flexible steel loop or use different size jack elongated distance
To compensate；Further, jack is shunk, in segment assembly, shield machine driving, and when jack extends 1160mm, first
Shield tail brush is completely into the first endless tube piece III, and first of shield tail brush distance of distance is 1165mm at this time, and therefore, stretch steel loop
Fundamental length range h4 be 600mm ~ 900mm；By studying size, the length of jack of shield machine, three shield tail brushes
Size, position, the operation distance and range of duct piece assembling machine, to determine that jack promotes stroke and section of jurisdiction to remove assembled side
Method.Meanwhile for the shield machine of different manufacturers model, jack promotes the calculated result of stroke will be different.
Correspondingly, in conjunction with above scheme, as shown in figure 16, the present invention also provides a kind of shield machine shield ventral brush replacing options,
It is further comprising the steps of including flexible steel loop described above:
S1: grouting behind shaft or drift lining after toward shield machine rear wall blocks shield tail leak；Further, under Special Geological Condition or
When hydraulic pressure is larger, polyurethane slurries can be infused in the section of jurisdiction of its adjacent ring, reinforce its waterproof effect, and withdrawal is fixed on section of jurisdiction
Support boots；
S2: the first section of jurisdiction and the second section of jurisdiction in pipe ring on first position are removed, and the support boots on first position are installed
Flexible steel loop；
S3: the old shield tail brush on first position is removed, and judges whether leak；Directly by new shield tail brush if without leak
It is soldered on the position of former shield tail brush, and coats shield tail grease, measure shield tail brush surrounding gap and record, be welded with shield in shield tail
Tail gap supports steel bar, and steel bar plays a supporting role to section of jurisdiction, avoids falling under section of jurisdiction on shield shell, protects section of jurisdiction and a upper section of jurisdiction
Hold identical gap of the shield tail, it is ensured that new installation section of jurisdiction and a upper section of jurisdiction are concentric；Again new shield tail brush, welding quality requirement are welded
Spacing between adjacent shield tail brush is not more than 3mm；Leak then stretches out flexible steel loop if it exists, until be in close contact with section of jurisdiction,
Confined space is formed, leaking area is blocked, again to grouting behind shaft or drift lining, such as injection polyurethane, forms the section that blocks water；If shield tail portion
Spray mud occurs for position, when Sand, should immediately stretch out hydraulically extensible steel loop, will be clogging at leak, then to it
The first endless tube position piece III carries out slip casting or injection polyurethane；
Third section of jurisdiction on the second position in pipe ring: being then moved in former pipe ring on first position by S4, and successively clear
Manage the shield tail brush at the section of jurisdiction of the second position；
S5: being back to step S3 after the shield tail brush cleared up at shield tail section of jurisdiction every time, until the shield at last block section of jurisdiction
Ventral brush replacement finishes and segment assembly.
In conjunction with above scheme, as shown in Figure 11 to Figure 18, exchanging shield ventral brush process is illustrated with the present embodiment, is replaced
Shield tail brush is answered incremental, and section of jurisdiction is using K block, B1 block and B2 block is successively removed, and (most two pieces can be simultaneously for A1 block, A3 block, A2 block
Remove replacement) after the replacement of this position, new section of jurisdiction is installed, then remove other side section of jurisdiction in order, first to remove one again after installation
It is sequence of construction that block section of jurisdiction, which carries out exchanging shield ventral brush:
A is damaged shield tail brush configuration in Figure 11, is illustrated using K block as first position.
As shown in figure 12, K block section of jurisdiction and B2 block section of jurisdiction are removed first, then replace shield tail brush in this position.
The first position of B1 block section of jurisdiction to original K block section of jurisdiction and B2 block section of jurisdiction is rotated again, as shown in figure 13, replaces original B1
The shield tail brush of block section of jurisdiction position.
As shown in figure 14, the position of A3 block section of jurisdiction to original B1 block section of jurisdiction is rotated, the shield tail brush of original A3 block section of jurisdiction is replaced.
As shown in figure 15, the position of A2 block section of jurisdiction to original A3 block section of jurisdiction is rotated, the shield tail brush of original A2 block section of jurisdiction is replaced.
As shown in figure 16, the position of A3 block section of jurisdiction to original A2 block section of jurisdiction is rotated, the shield tail brush of original A3 block section of jurisdiction is replaced.
As shown in figure 17, B2 block section of jurisdiction is installed.
As shown in figure 18, K block section of jurisdiction is finally installed.
Preferably, further comprising the steps of before step S1 in the present embodiment in conjunction with above scheme:
Shield machine is shut down to predetermined position, and bentonite is injected after tube wall first with synchronous grouting, thus here
Protective layer is formed, when avoiding slip casting, slurry plugs synchronous grouting pipe and toward altering slurry in shield tail, cutterhead；Bentonite injection finishes
Afterwards, the secondary grouting hole reserved by every piece of installing pipe on piece, from the latter ring of the last assembled endless tube piece (III ring) completed
(II ring) injects aqueous polyurethane, prevents in subsequent slip casting, slurries seal in shield tail locking shield machine shell；Injection rate is to inject
Pressure 0.5Mpa ~ 0.6Mpa control reaches better anti-grout leaking effect.
Polyurethane injects adjacent bull's eye section of jurisdiction, carries out stratum consolidation and rear water source blocks；Seal ring is formed to block as possible
Rear water source reduces the risk of water burst when changing ventral brush；Grouting pressure is controlled in 0.6 ~ 0.8Mpa；Reality is needed in this injection process
The monitoring of room personnel's twenty four hours is tested, the proportion of cement slurry is suitably adjusted according to current stratum hydraulic pressure and flow, flow velocity, is controlled
Grouting pressure processed reaches an ideal slurries presetting period, to meet the most ideal slip casting effect at this stratum；
Each reserved injected hole, which is subject to, cannot continue to inject slurries, after the completion of slip casting, need to check ejection for water plugging effect, lead to
The hole for hoist aperture for crossing each section of jurisdiction checked, determine it is anhydrous after just implementable exchanging shield ventral brush.
After the completion of slip casting, after jack is shunk in place, the first endless tube piece III is torn open using shield machine itself assembling machine
It removes, if still having spillage, and spillage amount is larger, at this time using the flexible steel loop being mounted on jack, using flexible
Steel loop will be removed at the spillage of section of jurisdiction and be blocked, and carry out injecting treatment again in time, it is ensured that not after spillage, can be handled；It is hydraulic
Flexible steel loop jack minimum pressure is greater than soil pressure.
Preferably, further comprising the steps of before step S1 in the present embodiment in conjunction with above scheme:
S11: scene dregs gone out to shield machine and geology carry out environment and confirm hydrological geological conditions, and determine shield tail brush more
The construction location changed confirms the safety requirements of exchanging shield ventral brush construction location；Safety requirements condition includes: first, avoids as far as possible
It is replaced in soft soil layer, it is more difficult once shield machine occurs and kowtows because being easy to happen and kowtowing under the action of shield machine self weight
Processing；The second, the region of rich groundwater is avoided as far as possible；
S12: the propulsion stroke of jack is calculated and determined, it is ensured that shield machine assembling machine can dismantle section of jurisdiction；And very heavy
Make old shield tail brush exposure in the propulsion stroke on top, while will not be by the exposure of the shield tail brush in the road Nei；
S13: according to the geological condition (replacement position avoids layer of sand, boulder bed as far as possible) of selection, slip casting strategy (water is selected
Mud-waterglass dual slurry), and carry out the closure isolation of underground water；It is specifically included in injection bentonite at shield tail, prevents shield machine
The methods of polyurethane is infused by soil layer locking and near shield tail；Good execution conditions are created for the replacement construction of shield tail brush,
The driving that is again started up also for shield machine after exchanging shield ventral brush construction is got ready work simultaneously；
After confirming ejection for water plugging plugging effect, start the replacement construction for carrying out shield tail brush；Firstly, utilizing shield machine assembly
Machine disassembles the section of jurisdiction for needing replacing shield tail brush position；Secondly, remove waste oil between this position shield tail brush in seal groove with
Slurries check shield tail brush, and abrasion serious shield tail brush segmentation is cut off and replaced；It is relatively light to abrasion only to be consolidated by slurries
The shield tail brush of knot is cleared up；Then, shield tail grease is smeared again to the seal groove between shield tail brush and shield tail brush；Finally, sharp
With extension arm segment assembly, when all pipe sheet assemblings in place when, 16 groups of jack of shield drive end unit reinforce simultaneously, repeatedly tightly
Gu all bolts of the domain.
Preferably, further comprising the steps of in step 3 in conjunction with above scheme:
Leak if it exists then needs after-teeming to starch and clogs leak stopping in leakage hard foam, or uses polyurathamc
Carry out leak stopping.
By using the above sealing structure scheme, it can be in close contact on the inside of sealing structure and shield tail, guarantee that its is close
Closing property, the of simple structure and strong practicability；It, can leakage to occurring during exchanging shield ventral brush using above-mentioned exchanging shield ventral brush method
Slurry situation is handled in time, and the further expansion of the mortar leakage prevention state of affairs reduces replacing construction.
The above, only presently preferred embodiments of the present invention not do limitation in any form to the present invention.It is any ripe
Those skilled in the art is known, without departing from the scope of the technical proposal of the invention, all using technology contents described above
Many possible changes and modifications or equivalent example modified to equivalent change are made to technical solution of the present invention.Therefore, all
It is the content without departing from technical solution of the present invention, any change modification made to the above embodiment of technology according to the present invention,
Equivalent variations and modification belong to the protection scope of the technical program.
Claims (9)
- The steel loop 1. a kind of shield machine exchanging shield ventral brush stretches, which is characterized in that including steel loop ontology and telescopic rod；The telescopic rod One end is set in the steel loop ontology, and can be along one end stretching motion of the steel loop ontology；The steel loop ontology it is another End is equipped with mounting plate, and the mounting plate is equipped with bolt hole；The other end of the telescopic rod is equipped with blocking part；It further include band；The blocking part includes iron plate, elastic component and waterproof case；The elastic component is set to the telescopic rod Telescopic end, the waterproof case are set to the outer end of the elastic component；The iron plate sets along the telescopic rod telescopic direction It sets and is connected with the elastic component；The band is set on the waterproof case, and is connect with the waterproof case；The sealing Band includes three；The iron plate is with a thickness of 10mm.
- 2. a kind of shield machine sealing structure includes flexible steel loop；It is characterized in that, further including body jack and being set to Section of jurisdiction in the body tail portion；The flexible steel loop is flexible steel loop described in the claims 1；The section of jurisdiction with it is described Sealing brush is additionally provided between the inner wall of tail portion；The jack is set in the tail portion, and with the scalable connection in the section of jurisdiction；Institute Flexible steel loop is stated to be set between the jack and the section of jurisdiction；Described flexible steel loop one end and the fixed company of the jack It connects, the other end extends to the section of jurisdiction direction.
- 3. shield machine sealing structure according to claim 2, which is characterized in that further include steel plate bundle；The steel plate bundle is set It is placed in the end of the tail portion, and the steel plate bundle is tilted to the lateral tail.
- 4. shield machine sealing structure according to claim 2, which is characterized in that the sealing brush is shield tail brush；The shield Ventral brush includes three；Shield tail brush described in three is arranged side by side along the shield machine tunneling direction in the section of jurisdiction and the tail portion Between wall.
- 5. shield machine sealing structure according to claim 4, which is characterized in that set between shield tail brush described in per adjacent twice There is seal chamber；Shield tail grease is marked in the seal chamber.
- 6. shield machine sealing structure according to claim 4, which is characterized in that the section of jurisdiction includes muti-piece；Described in muti-piece Section of jurisdiction is set in the body tail portion；Section of jurisdiction described in muti-piece and the shield tail brush are arranged side by side.
- 7. a kind of shield machine shield ventral brush replacing options, which comprises the following steps:S1: toward shield machine tail portion grouting behind shaft or drift lining, block shield tail leak, withdraw the support boots on pipe ring；S2: the first section of jurisdiction and the second section of jurisdiction in pipe ring on first position are removed, and the support boots on the first position are installed Flexible steel loop；S3: the old shield tail brush on the first position is removed, and judges whether leak；New shield tail brush is soldered to if non-leak The position of the old shield tail brush, and coat shield tail grease；The stretching of flexible steel loop is then blocked leaking area by leak if it exists, again To grouting behind shaft or drift lining；S4: the third section of jurisdiction on the second position in pipe ring is moved in former pipe ring on the first position, and successively clears up institute State the shield tail brush on the second position；S5: being back to step S3 after the shield tail brush cleared up in pipe ring every time, until the exchanging shield ventral brush at last block section of jurisdiction It is complete.
- 8. shield machine shield ventral brush replacing options according to claim 7, which is characterized in that before step S1 further include following Step:S11: scene dregs gone out to shield machine and geology carry out environment and confirm hydrological geological conditions, and determine exchanging shield ventral brush Construction location confirms the safety requirements of exchanging shield ventral brush construction location；S12: the propulsion stroke of jack is calculated and determined, it is ensured that shield machine assembling machine can dismantle section of jurisdiction；And in jack Promoting makes old shield tail brush exposure in stroke, while also confirmation will not be by the exposure of the shield tail brush in the road Nei；S13: according to the geological condition of selection, selecting slip casting strategy, and carries out the closure isolation of underground water.
- 9. shield machine shield ventral brush replacing options according to claim 7, which is characterized in that further include in the step 3 with Lower step:Leak if it exists is then needed after-teeming to starch and clogs leak stopping in leakage hard foam, or carried out using polyurathamc Leak stopping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662168.2A CN107687344B (en) | 2017-09-12 | 2017-09-12 | A kind of shield machine exchanging shield ventral brush stretches steel loop, sealing structure and replacing options |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710662168.2A CN107687344B (en) | 2017-09-12 | 2017-09-12 | A kind of shield machine exchanging shield ventral brush stretches steel loop, sealing structure and replacing options |
Publications (2)
| Publication Number | Publication Date |
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| CN107687344A CN107687344A (en) | 2018-02-13 |
| CN107687344B true CN107687344B (en) | 2019-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710662168.2A Active CN107687344B (en) | 2017-09-12 | 2017-09-12 | A kind of shield machine exchanging shield ventral brush stretches steel loop, sealing structure and replacing options |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184755A (en) * | 2018-11-16 | 2019-01-11 | 海南大学 | A kind of shield tail leakage sealing section of jurisdiction and its construction method |
| CN111706340B (en) * | 2020-06-15 | 2021-11-05 | 中铁十一局集团城市轨道工程有限公司 | Shield tail brush convenient to replace and method for replacing shield tail brush under long-distance non-reinforced working condition |
| CN111764915B (en) * | 2020-07-02 | 2022-07-19 | 中铁十四局集团有限公司 | Installation method of shield tail of shield machine |
| CN111878099B (en) * | 2020-07-31 | 2022-02-08 | 哈尔滨工业大学 | Novel slurry leakage prevention and water leakage combined type protection device for shield tail of shield machine |
| CN112610228B (en) * | 2020-12-28 | 2023-05-09 | 中国建筑股份有限公司 | Rapid replacement method of shield tail brush |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01230897A (en) * | 1988-03-09 | 1989-09-14 | Tekken Constr Co Ltd | Shield excavator |
| JP3312791B2 (en) * | 1993-10-07 | 2002-08-12 | 東京電力株式会社 | Method and apparatus for replacing tail seal of shield machine |
| CN102155237B (en) * | 2011-03-22 | 2013-03-06 | 中建交通建设集团有限公司 | Device for exchanging tail brush during shield tunneling, and construction method of device |
| CN103062414B (en) * | 2013-01-24 | 2015-04-15 | 中国铁建重工集团有限公司 | Emergency sealing device for shield water burst accident rescue |
| CN105840202B (en) * | 2016-03-29 | 2019-09-03 | 中铁时代建筑设计院有限公司 | Annular consolidation by freezing water sealing structure and its construction method when a kind of exchanging shield ventral brush |
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