CN107687344A - 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
- Publication number
- CN107687344A CN107687344A CN201710662168.2A CN201710662168A CN107687344A CN 107687344 A CN107687344 A CN 107687344A CN 201710662168 A CN201710662168 A CN 201710662168A CN 107687344 A CN107687344 A CN 107687344A
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- shield
- jurisdiction
- section
- brush
- steel loop
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 79
- 239000010959 steel Substances 0.000 title claims abstract description 79
- 238000007789 sealing Methods 0.000 title claims abstract description 34
- 238000010276 construction Methods 0.000 claims abstract description 18
- 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
- 230000001737 promoting effect Effects 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- 239000004570 mortar (masonry) Substances 0.000 abstract description 8
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 13
- 239000002002 slurry Substances 0.000 description 12
- 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 5
- 239000007924 injection Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000005516 engineering process 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
- 239000000243 solution Substances 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 244000309464 bull Species 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000013536 elastomeric material Substances 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
- 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 flexible steel loop, sealing structure and replacing options, the sealing structure includes body, flexible steel loop, jack and the section of jurisdiction being arranged in body afterbody, sealing brush is additionally provided between section of jurisdiction and afterbody inwall, jack is arranged in afterbody, and with the scalable connection in section of jurisdiction, flexible steel loop is arranged between jack and section of jurisdiction, and flexible steel loop one end is fixedly connected with jack, and its other end extends to section of jurisdiction direction；Using such scheme sealing structure can be caused with being in close contact on the inside of shield tail, to ensure its seal, this is simple in construction, practical；Using above-mentioned exchanging shield ventral brush method, the spillage situation occurred during exchanging shield ventral brush can be handled in time, the further expansion of the mortar leakage prevention state of affairs, reduce replacing construction.
Description
Technical field
The invention belongs to the maintenance technique field of Suporting structure, and in particular to a kind of shield machine exchanging shield ventral brush stretches steel
Ring, sealing structure and replacing options.
Background technology
Existing shield machine may be caused shield tail leak during section of jurisdiction reach or exchanging shield ventral brush by external water pressure
Sand leakage, so as to cause exchanging shield ventral brush not carry out；And because replacing construction is long, it may occur again in Renewal process
The situation of secondary spillage；Leak sand leakage occurs during being moved forward in section of jurisdiction, section of jurisdiction should be recovered immediately, supplement slip casting is carried out to shield tail
Move forward again afterwards and carry out exchanging shield ventral brush, but for during exchanging shield ventral brush, now generation spillage will not allowed disposable；In addition,
During shield driving, after disturbance, face is unstable on stratum, and as downtime is longer, underground water enters storehouse of burying, Tu Cang pressures
Power gradually increases；And when changing ventral brush, part jack can not be pushed up to section of jurisdiction, after shield machine will produce under support pressure
Move back, so as to influence the replacing of ventral brush.
Based on technical problem present in the work of above-mentioned shield machine, there has been no the solution of correlation；Therefore there is an urgent need to
Seek effective scheme to solve the above problems.
The content of the invention
The purpose of the present invention is for weak point present in above-mentioned technology, proposes a kind of shield machine sealing structure, purport
Solving existing shield machine tail seal difficult problem.
The present invention provides a kind of shield drive end unit exchanging shield ventral brush flexible steel loop, including steel loop body and expansion link；It is flexible
Bar one end is arranged in steel loop body, and can be along one end stretching motion of steel loop body；The other end of steel loop body is provided with installation
Plate, installing plate are provided with bolt hole；The other end of expansion link is provided with blocking part.
Further, in addition to band；Blocking part includes iron plate, elastic component and waterproof case；Elastic component is arranged at flexible
The telescopic end of bar, waterproof case are arranged at the outer end of elastic component；Iron plate sets along expansion link telescopic direction and connected with elastic component
Connect；Band is arranged on waterproof case, and is connected with waterproof case；Band includes three；Iron plate thickness is 10mm.
Correspondingly, the present invention also provides a kind of shield machine sealing structure, includes flexible steel loop；Also include body, very heavy
Push up and be arranged at the section of jurisdiction in body afterbody；Flexible steel loop is flexible steel loop described above；Between section of jurisdiction and afterbody inwall
It is additionally provided with sealing brush；Jack is arranged in afterbody, and with the scalable connection in section of jurisdiction；Flexible steel loop is arranged at jack and section of jurisdiction
Between；Flexible steel loop one end is fixedly connected with jack, and its other end extends to section of jurisdiction direction.
Further, in addition to steel plate bundle, steel plate bundle are arranged at the end of afterbody, 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 arranged between section of jurisdiction and afterbody inwall.
Further, annular seal space is provided between every adjacent twice shield tail brush, shield tail grease is marked with annular seal space.
Further, section of jurisdiction includes polylith；Polylith section of jurisdiction is arranged in body afterbody；Multiple sections of jurisdiction are set side by side with shield tail brush
Put.
The present invention also provides a kind of shield machine shield ventral brush replacing options, it is intended to solves existing shield drive end unit exchanging shield ventral brush
Difficult problem.
A kind of shield machine shield ventral brush replacing options, including flexible steel loop described above are provided；It is further comprising the steps of：
S1：Grouting behind shaft or drift lining after toward shield machine rear wall, block shield tail leak, withdraw the support boots being fixed on section of jurisdiction；
S2：The first section of jurisdiction and the second section of jurisdiction on first position in pipe ring are removed, and the support boots on first position are installed and stretched
Steel loop；
S3：The old shield tail brush on first position is removed, and judges whether leak；Directly new shield tail brush is welded if without leak
To the position of former shield tail brush, and coat shield tail grease；Flexible steel loop is stretched out if it leak be present and blocks leaking area, then
It is secondary to grouting behind shaft or drift lining；
S4:The 3rd section of jurisdiction on the second place in pipe ring is moved in former pipe ring on first position, and clears up second successively
The shield tail brush put；
S5：Step S3 is back to after the shield tail brush cleared up every time at section of jurisdiction, until the exchanging shield ventral brush at last block section of jurisdiction
It is complete.
By using above technical scheme, sealing structure can be caused and be in close contact on the inside of shield tail, ensure its seal,
This is simple in construction, practical；, can be to the spillage situation that occurs during exchanging shield ventral brush using above-mentioned exchanging shield ventral brush method
Handled in time, the further expansion of the mortar leakage prevention state of affairs, reduce replacing construction.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Below with reference to accompanying drawing, the invention will be further described：
Fig. 1 is a kind of shield machine sectional view of the present invention；
Fig. 2 is Fig. 1 Local C enlarged diagrams；
Fig. 3 is a kind of shield machine outer wall construction schematic diagram of the present invention；
Fig. 4 is the enlarged diagram of Fig. 3 parts B state one；
Fig. 5 is the enlarged diagram of Fig. 3 parts B state two；
Fig. 6 is the enlarged diagram of Fig. 3 parts B state three；
Fig. 7 is the flexible steel loop structural representation of the present invention；
Fig. 8 is the flexible steel loop structural representation of the present invention；
Fig. 9 is the flexible steel loop structural representation of the present invention；
Figure 10 is the flexible steel loop structural representation of the present invention；
Figure 11 is exchanging shield ventral brush pre-structure schematic diagram of the present invention；
Figure 12 is the schematic diagram of exchanging shield ventral brush state one of the present invention；
Figure 13 is the schematic diagram of exchanging shield ventral brush state two of the present invention；
Figure 14 is the schematic diagram of exchanging shield ventral brush state three of the present invention；
Figure 15 is the schematic diagram of exchanging shield ventral brush state four of the present invention；
Figure 16 is the schematic diagram of exchanging shield ventral brush state five of the present invention；
Figure 17 is the schematic diagram of exchanging shield ventral brush state six of the present invention；
Figure 18 is the schematic diagram of exchanging shield ventral brush state seven of the present invention；
Figure 19 is a kind of flow chart of shield machine shield ventral brush replacing options embodiment one of the present invention.
In figure：1st, body；2nd, afterbody；21st, shield tail brush；22nd, steel plate bundle；23rd, jack；24th, section of jurisdiction；25th, stretch steel loop；
251st, bolt hole；252nd, iron plate；253rd, band；254th, waterproof case；255th, elastic component；256th, expansion link；257th, steel loop body；
3rd, stratum；4th, mortar.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Correspondingly, with reference to such 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 body 257 and expansion link 256；The one end of expansion link 256 is arranged in steel loop body 257, and
Can be along one end stretching motion of steel loop body 257；The other end of steel loop body 257 is provided with installing plate, and installing plate is provided with bolt
Hole 251；The other end of expansion link 256 is provided with blocking part；Further, blocking part includes iron plate 252, elastic component 255 and prevented
Water part 254；Elastic component 255 is vertically arranged at 256 telescopic end of expansion link, and waterproof case 254 is vertically set
It is placed in the outer end of elastic component 255；Iron plate 252 sets along the telescopic direction of expansion link 256 and connected with elastic component 255, and it mainly rises
To keeping out the impurity pollution expansion link such as mortar；Band 253 is arranged on waterproof case 254, and is connected with waterproof case 254, sealing
Band 253 includes three；The thickness of iron plate 252 is 10mm；Sealing can mainly be played a part of.
Preferably, with reference to such scheme, as shown in Figures 4 to 6, steel loop overall length fundamental length scope of stretching is that h4 is
600mm to 900mm, elects 880mm, wherein hydraulic cylinder tube length 750mm in the present embodiment as, and the maximum top elongation of jack is reachable
1500mm；Two layers of flexible part and waterproof case on the outside of flexible steel loop iron plate, thickness is 5mm, and elastic component 255 is provided with elastic material
Material, waterproof case 254 are provided with waterproof material；Waterproof material surface exceedes section of jurisdiction surface 4mm, and there is three seals circle on its surface,
It can be in close contact with the inner side of afterbody 2, ensure its seal；During shield machine shield ventral brush is changed, because pressure is excessive or
The slip casting water proof time is inadequate, causes shield tail mud to leak, it is therefore possible to use hydraulically extensible steel loop is blocked at spillage in time,
Then in the section of jurisdiction of its adjacent ring（Bull's eye）Polyurethane slurries are noted, reinforce 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；Also include body 1, body 1 includes afterbody 2；Provided with jack 23 and the section of jurisdiction 24 laterally set along body 1 in afterbody 2；
Wherein, sealing brush is additionally provided between section of jurisdiction 24 and the inwall of afterbody 2, sealing brush is generally stainless steel wire material and is made；Jack 23
It is horizontally set at along body 1 in afterbody 2, jack 23 and 24 scalable connection of section of jurisdiction, to change sealing brush in shield drive end unit
When, leak in afterbody pipe ring can be blocked；By using above-mentioned sealing structure scheme so that shield drive end unit can rise
Acted on to very high sealing, avoid shield machine mortar in headwork from running in afterbody, influence the work of shield machine, cause safety
Hidden danger.
Preferably, with reference to such scheme, as shown in Figures 1 to 6, the present invention, which provides a kind of shield machine sealing structure, also to be included
Steel plate bundle 22；Steel plate bundle 22 is bolted the end for being arranged at afterbody 2；And during in order that shield machine working, side sand
The mortar 4 of layer 3 is without falling into afterbody 2, and rearwardly 2 outsides tilt tilting, such can of mortar 4 to the steel plate bundle 22 on afterbody 2
The outside side throwing in the presence of steel plate bundle 22, gap that will not be directly between afterbody 2 and section of jurisdiction 24 enter in afterbody 2.
Preferably, with reference to such 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 section of jurisdiction 24 and the inwall of afterbody 2 along shield machine tunneling direction A, and
Annular seal space is provided between per adjacent twice shield tail brush 21；, so can be effective further, in annular seal space to be marked with shield tail grease
Ensure shield tail section of jurisdiction behind synchronous grouting slurries will not be between section of jurisdiction and shield machine gap spill, while prevent underground water
Leak 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
Situation, arrange exchanging shield ventral brush in time.
Preferably, with reference to such scheme, as shown in Figures 1 to 6, section of jurisdiction 24 includes polylith, and polylith can specifically include two
To six pieces；Polylith section of jurisdiction 24 is horizontally set in the afterbody 2 of body 1 along body 1；Polylith section of jurisdiction 24 is set side by side with shield tail brush 21
Put, and shield tail brush 21 need to be arranged in section of jurisdiction without departing from the horizontal extent of polylith section of jurisdiction 24, i.e. shield tail brush 21 in the horizontal direction
In the range of 24, so when changing shield tail brush 21, it is unlikely to make section of jurisdiction leak outside.
Preferably, with reference to such scheme, as shown in Figures 1 to 6, the present invention, which provides a kind of shield machine sealing structure, also to be included
Flexible steel loop 25；Flexible steel loop 25 is arranged between jack 23 and section of jurisdiction 24；Flexible one end of steel loop 25 by bolt with it is very heavy
Top 23 is fixedly connected, and its other end extends to section of jurisdiction direction, so when changing shield tail brush, can pass through liquid if there is leak
Pressure stretch contracting steel loop stretches, and compresses the section of jurisdiction that spillage goes out, and relative confined space is formed, to be blocked；Further, stretch steel loop
25 are provided with expansion link 256 and bolt hole 251；Expansion link 256 extends one end to the direction of section of jurisdiction 2 and is provided with elastic component 255 and waterproof
Part 254, elastic component 255 are provided with elastomeric material, and waterproof case 254 is provided with waterproof material；Waterproof case 254 is arranged at elastic component
255 outside；The upper end of expansion link 256 is additionally provided with iron plate 252 and band 253；Band 253 is arranged at the upper of waterproof case 254
End；Further, the connection on the one end of iron plate 252 and elastic component 255, its other end is to flexible one end of 25 bolt hole of steel loop 251
Extension；Band 253 is fixed on waterproof material, and length is equal to the width of waterproof material, and the one end of band 253 and waterproof
Part 254 connects, and its other end extends to flexible one end of 25 bolt hole of steel loop 251, and rides upon on iron plate 252, and iron plate 252 is grown
In band 253.
Preferably, with reference to such 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 the 3rd endless tube piece I；According to first of shield tail
The position dimension apart from jack 23 is brushed, is needed（Reserve）Removing the first endless tube piece III just exposes shield tail brush, jack maximum
Stroke is 2000mm（Containing jack itself distance）, mounting distance h1 of first of shield tail brush away from jack is 2000mm, the 3rd
Mounting distance h2 of the road shield tail brush away from jack is 2865mm, and itself distance h5 distances of jack are 1160, adjacent twice shield
Ventral brush distance h3 is 325mm；For 1200mm sections of jurisdiction, jack at least needs to stretch out 1750mm；For 1500mm sections of jurisdiction, at least
Need to stretch out 2000mm（Each depend on the installation site of section of jurisdiction）；If using jack maximum elongation distance as 2000mm, it is not enough to
Expose first of shield tail brush, therefore flexible steel loop can be combined and carry out elongated distance or use different size jack elongated distance
To compensate；Further, jack shrinks, 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 now first of shield tail brush distance of distance is 1165mm, and therefore, stretch steel loop
Fundamental length scope h4 be 600mm ~ 900mm；By studying size, the length of jack of shield machine, three shield tail brushes
Size, position, the operation distance and scope 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, its jack promotes the result of calculation of stroke by difference.
Correspondingly, with reference to such 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, block shield tail leak；Further, under Special Geological Condition or hydraulic pressure
When larger, polyurethane slurries can be noted in the section of jurisdiction of its adjacent ring, reinforce its waterproof effect, withdraw the support being fixed on section of jurisdiction
Boots；
S2：The first section of jurisdiction and the second section of jurisdiction on first position in pipe ring are removed, and the support boots on first position are installed and stretched
Steel loop；
S3：The old shield tail brush on first position is removed, and judges whether leak；Directly new shield tail brush is welded if without leak
To the position of former shield tail brush, and shield tail grease is coated, measure shield tail brush surrounding gap and record, between shield tail is welded with shield tail
Gap supports steel bar, and steel bar is played a supporting role to section of jurisdiction, avoids falling under section of jurisdiction on shield shell, section of jurisdiction is kept phase with a upper section of jurisdiction
Same 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 is welded, welding quality requires adjacent
Spacing between shield tail brush is not more than 3mm；Flexible steel loop is stretched out if it leak be present, until being in close contact with section of jurisdiction, formed
Confined space, leaking area is blocked, again to grouting behind shaft or drift lining, such as inject polyurethane, form the section that blocks water；If shield tail position is sent out
Raw spray mud, when Sand, hydraulically extensible steel loop should be stretched out immediately, will be clogging at leak, then to its first
Endless tube piece III positions carry out slip casting or injection polyurethane；
S4:Then the 3rd section of jurisdiction on the second place in pipe ring is moved in former pipe ring on first position, and clears up successively
Shield tail brush at two positions section of jurisdiction；
S5：Step S3 is back to after the shield tail brush cleared up every time at shield tail section of jurisdiction, until the shield tail brush at last block section of jurisdiction
Replacing finishes and segment assembly.
With reference to such scheme, as shown in Figure 11 to Figure 18, exchanging shield ventral brush process is illustrated with the present embodiment, changed
Shield tail brush should be incremental, and section of jurisdiction is using dismounting K blocks, B1 blocks and B2 blocks successively, A1 blocks, A3 blocks, A2 blocks（Most two pieces can be simultaneously
Remove and change）After being changed at this position, new section of jurisdiction is first installed, then removes opposite side section of jurisdiction in order, 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 blocks as first position.
As shown in figure 12, K blocks section of jurisdiction and B2 blocks section of jurisdiction are removed first, then change the shield tail brush on the position.
B1 blocks section of jurisdiction to original K blocks section of jurisdiction and the first position of B2 blocks section of jurisdiction is rotated again, as shown in figure 13, changes original B1
The shield tail brush of block section of jurisdiction position.
As shown in figure 14, the position of A3 blocks section of jurisdiction to original B1 blocks section of jurisdiction is rotated, changes the shield tail brush of former A3 blocks section of jurisdiction.
As shown in figure 15, the position of A2 blocks section of jurisdiction to original A3 blocks section of jurisdiction is rotated, changes the shield tail brush of former A2 blocks section of jurisdiction.
As shown in figure 16, the position of A3 blocks section of jurisdiction to original A2 blocks section of jurisdiction is rotated, changes the shield tail brush of former A3 blocks section of jurisdiction.
As shown in figure 17, B2 blocks section of jurisdiction is installed.
As shown in figure 18, K blocks section of jurisdiction is finally installed.
Preferably, it is further comprising the steps of before step S1 in the present embodiment with reference to such scheme：
Shield machine is shut down to precalculated position, and bentonite is injected after tube wall first with synchronous grouting, so as to formed here
Protective layer, when avoiding slip casting, slurry plugs synchronous grouting pipe and toward altering slurry in shield tail, cutterhead；After bentonite injects, lead to
The secondary grouting hole reserved is crossed on every piece of installation section of jurisdiction, from the last assembled endless tube piece completed（III rings）Latter ring（II
Ring）Aqueous polyurethane is injected, is prevented in follow-up slip casting, slurries seal in shield tail locking shield machine housing；Injection rate is pressed with injecting
Power 0.5Mpa ~ 0.6Mpa is controlled, and reaches more preferable anti-grout leaking effect.
Polyurethane injects adjacent bull's eye section of jurisdiction, carries out stratum consolidation and the closure of rear water source；Seal ring is formed to block as possible
Rear water source, reduce 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
Room personnel's twenty four hours monitoring is tested, the proportioning of cement mortar, control are suitably adjusted according to current stratum hydraulic pressure and flow, flow velocity
Grouting pressure processed, reach a preferable slurries presetting period, so as to meet the most preferable slip casting effect in the case of this stratum；
Each reserved injected hole is defined by that can not continue injection slurries, and after the completion of slip casting, ejection for water plugging effect need to be checked, is led to
The hole for hoist perforate for crossing each section of jurisdiction checked, determine it is anhydrous after can just implement exchanging shield ventral brush.
After the completion of slip casting, after jack shrinks in place, the first endless tube piece III is torn open using shield machine itself assembling machine
Remove, if still there is spillage, and spillage amount is larger, now using the flexible steel loop being arranged on jack, using flexible
Steel loop will be removed at the spillage of section of jurisdiction and blocked, and carry out injecting treatment again in time, it is ensured that not after spillage, can be handled；Hydraulic pressure
Flexible steel loop jack minimum pressure is greater than soil pressure.
Preferably, it is further comprising the steps of before step S1 in the present embodiment with reference to such scheme：
S11：Scene goes out dregs to shield machine and geology carries out environment and confirms hydrological geological conditions, and determines exchanging shield ventral brush
Construction location, confirm the safety requirements of exchanging shield ventral brush construction location；Safety requirements condition includes：Firstth, avoid as far as possible soft
Soil layer is changed, because in the presence of shield machine deadweight, is easily kowtowed, compared with difficulty once shield machine occurs and kowtows
Reason；Secondth, 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 in jack
Promoting exposes old shield tail brush in stroke, while will not also expose the shield tail brush in Nei roads；
S13：According to the geological condition of selection（Change position and avoid layer of sand, boulder bed as far as possible）, select slip casting strategy（Cement-water
Glass dual slurry）, and carry out the closure isolation of underground water；Injection bentonite at shield tail is specifically included in, prevents that shield machine is native
Layer locking and near shield tail note polyurethane the methods of；Good execution conditions are created for the replacing construction of shield tail brush, simultaneously
Also the driving that is again started up for shield machine after exchanging shield ventral brush construction is got ready work；
After ejection for water plugging plugging effect is confirmed, the replacing construction of shield tail brush is proceeded by；First, torn open using shield machine assembling machine
Lay down the section of jurisdiction for needing to change shield tail brush position；Secondly, waste oil and slurries in seal groove between this position shield tail brush are removed,
Shield tail brush is checked, the shield tail brush segmentation to serious wear is cut off and changed；It is relatively light simply by slurry consolidation to wearing
Shield tail brush is cleared up；Then, shield tail grease is smeared again to the seal groove between shield tail brush and shield tail brush；Finally, using adding
Long-armed segment assembly, when all pipe sheet assemblings in place when, 16 groups of jack of shield drive end unit reinforce simultaneously, fasten repeatedly whole
All bolts of ring.
Preferably, it is further comprising the steps of in step 3 with reference to such scheme：
If leak be present, need after-teeming to starch and clog leak stopping in leakage hard foam, or carried out using polyurathamc
Leak stopping.
By using above sealing structure scheme, sealing structure can be caused with being in close contact on the inside of shield tail, to ensure that its is close
Closing property, this is simple in construction, practical；Using above-mentioned exchanging shield ventral brush method, leakage that can be to occurring during exchanging shield ventral brush
Slurry situation is handled in time, the further expansion of the mortar leakage prevention state of affairs, reduces replacing construction.
It is described above, only presently preferred embodiments of the present invention, any formal limitation not is done 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 are made to technical solution of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, it is all
It is the content without departing from technical solution of the present invention, any change made for any of the above embodiments is changed according to technology of the invention,
Equivalent variations and modification, belong to the protection domain of the technical program.
Claims (10)
- The steel loop 1. a kind of shield machine exchanging shield ventral brush stretches, it is characterised in that including steel loop body and expansion link；The expansion link One end is arranged in the steel loop body, and can be along one end stretching motion of the steel loop body；The steel loop body it is another End is provided with installing plate, and the installing plate is provided with bolt hole；The other end of the expansion link is provided with blocking part.
- The steel loop 2. shield machine exchanging shield ventral brush according to claim 1 stretches, it is characterised in that also including band；Institute Stating blocking part includes iron plate, elastic component and waterproof case；The elastic component is arranged at the telescopic end of the expansion link, described anti- Water part is arranged at the outer end of the elastic component；The iron plate sets along the expansion link telescopic direction and connected with the elastic component Connect；The band is arranged on the waterproof case, and is connected with the waterproof case；The band includes three；The iron Plate thickness is 10mm.
- 3. a kind of shield machine sealing structure, includes flexible steel loop；Characterized in that, also include body jack and be arranged at Section of jurisdiction in the body afterbody；The flexible steel loop is the flexible steel loop described in any one of the claims 1 to 2；It is described Sealing brush is additionally provided between section of jurisdiction and the afterbody inwall；The jack is arranged in the afterbody, and can with the section of jurisdiction Flexible connection；The flexible steel loop is arranged between the jack and the section of jurisdiction；Described flexible steel loop one end and described thousand Jin top is fixedly connected, and its other end extends to the section of jurisdiction direction.
- 4. shield machine sealing structure according to claim 3, it is characterised in that also including steel plate bundle；The steel plate bundle is set The end of the afterbody is placed in, and the steel plate bundle tilts to the lateral tail.
- 5. shield machine sealing structure according to claim 3, it is characterised 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 in the section of jurisdiction and the afterbody along the shield machine tunneling direction Between wall.
- 6. shield machine sealing structure according to claim 5, it is characterised in that set between shield tail brush described in per adjacent twice There is annular seal space；Shield tail grease is marked with the annular seal space.
- 7. shield machine sealing structure according to claim 5, it is characterised in that the section of jurisdiction includes polylith；Described in polylith Section of jurisdiction is arranged in the body afterbody；Section of jurisdiction described in polylith is arranged side by side with the shield tail brush.
- 8. a kind of shield machine shield ventral brush replacing options, it is characterised in that including stretching described in any one of the claims 1 to 3 Contracting steel loop；It is further comprising the steps of：S1：Toward shield machine afterbody grouting behind shaft or drift lining, block shield tail leak, the support boots withdrawn on pipe ring；S2：The first section of jurisdiction and the second section of jurisdiction on first position in pipe ring 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；Flexible steel loop is stretched out if it leak be present and blocks leaking area, again To grouting behind shaft or drift lining；S4:The 3rd section of jurisdiction on the second place in pipe ring is moved in former pipe ring on the first position, and clears up institute successively State the shield tail brush on the second place；S5：Step S3 is back to after the shield tail brush cleared up every time in pipe ring, until the exchanging shield ventral brush at last block section of jurisdiction It is complete.
- 9. shield machine shield ventral brush replacing options according to claim 8, it is characterised in that also include before step S1 following Step：S11：Scene goes out dregs to shield machine and geology carries out environment and confirms hydrological geological conditions, and determines exchanging shield ventral brush Construction location, confirm 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 exposes old shield tail brush in stroke, while also confirms that the shield tail brush in Nei roads will not be exposed；S13：According to the geological condition of selection, slip casting strategy is selected, and carries out the closure isolation of underground water.
- 10. shield machine shield ventral brush replacing options according to claim 8, it is characterised in that in the step 3 also include with Lower step：If leak be present, need after-teeming to starch and clog leak stopping in leakage hard foam, or carried out using polyurathamc Leak stopping.
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| 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 |
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| CN107687344A true CN107687344A (en) | 2018-02-13 |
| CN107687344B CN107687344B (en) | 2019-04-05 |
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Cited By (5)
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| 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 |
| CN111706340A (en) * | 2020-06-15 | 2020-09-25 | 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 |
| CN111878099A (en) * | 2020-07-31 | 2020-11-03 | 哈尔滨工业大学 | Novel slurry leakage prevention and water leakage combined type protection device for shield tail of shield machine |
| CN112610228A (en) * | 2020-12-28 | 2021-04-06 | 中国建筑股份有限公司 | Quick replacement method for shield tail brush |
| WO2022001622A1 (en) * | 2020-07-02 | 2022-01-06 | 中铁十四局集团有限公司 | Mounting method for shield tail of shield tunneling machine |
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| JPH01230897A (en) * | 1988-03-09 | 1989-09-14 | Tekken Constr Co Ltd | Shield excavator |
| JPH07102889A (en) * | 1993-10-07 | 1995-04-18 | Tokyo Electric Power Co Inc:The | Tail seal change method and its device of shield excavator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN111706340A (en) * | 2020-06-15 | 2020-09-25 | 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 |
| WO2022001622A1 (en) * | 2020-07-02 | 2022-01-06 | 中铁十四局集团有限公司 | Mounting method for shield tail of shield tunneling machine |
| CN111878099A (en) * | 2020-07-31 | 2020-11-03 | 哈尔滨工业大学 | Novel slurry leakage prevention and water leakage combined type protection device for shield tail of shield machine |
| CN112610228A (en) * | 2020-12-28 | 2021-04-06 | 中国建筑股份有限公司 | Quick replacement method for shield tail brush |
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|---|---|
| CN107687344B (en) | 2019-04-05 |
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