CN106948829A - A kind of slurry shield originates portal sealing structure and its construction method - Google Patents
A kind of slurry shield originates portal sealing structure and its construction method Download PDFInfo
- Publication number
- CN106948829A CN106948829A CN201710297797.XA CN201710297797A CN106948829A CN 106948829 A CN106948829 A CN 106948829A CN 201710297797 A CN201710297797 A CN 201710297797A CN 106948829 A CN106948829 A CN 106948829A
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- steel loop
- wire brush
- rubber slab
- portal
- cord rubber
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- 238000007789 sealing Methods 0.000 title claims abstract description 103
- 239000002002 slurry Substances 0.000 title claims abstract description 77
- 238000010276 construction Methods 0.000 title claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 181
- 239000010959 steel Substances 0.000 claims abstract description 181
- 229920001971 elastomer Polymers 0.000 claims abstract description 135
- 230000010412 perfusion Effects 0.000 claims abstract description 10
- 239000011435 rock Substances 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 16
- 238000011900 installation process Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 8
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 claims description 4
- 238000007569 slipcasting Methods 0.000 claims description 3
- 239000013049 sediment Substances 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000005574 cross-species transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000243 solution Substances 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
- E21D9/08—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
-
- 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
-
- 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
- E21D11/04—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
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
Portal sealing structure and its construction method are originated the invention discloses a kind of slurry shield, its sealing structure includes twice wire brush, twice cord rubber slab, and the sealing slurry of the three sealing intra-bladder instillations formed in twice wire brush and twice cord rubber slab with shield machine is sealed to hole, its construction method includes step：First, portal steel loop is installed；2nd, first of wire brush and second wire brush are installed；3rd, the first extension steel loop is installed；4th, first of cord rubber slab and the second extension steel loop are installed；5th, second cord rubber slab and fixed steel loop are installed；6th, cord Anchor plate kit is installed；7th, shield machine and rock face and sealing slurry perfusion.The present invention has been greatly improved sealing effectiveness, it can effectively prevent that mud overflows when shield launching muddy water storehouse from setting up, avoid the phenomenon of the sediment failure caused by mud overflows, it is ensured that the safety that slurry shield is originated, and construction method step is simple, reasonable in design, short construction period.
Description
Technical field
The invention belongs to technical field of tunnel construction, and in particular to a kind of to be applied to in the hole progress compared with great burying
The slurry shield of sealing originates portal sealing structure and its construction method.
Background technology
Shield machine be typically provided with openings position during set of tunneling construction in being originated for tunneling shield construction
Sealing structure, sealing structure is in order to prevent that the risk of the excessive mud of portal and sediment failure from occurring in work progress in shield machine, now
There is sealing structure probably to have following several：The first, sealed using steel bushing, but steel bushing is costly, and working procedure is multiple
It is miscellaneous, it has not been convenient to construct；Secondth, using single cord rubber slab and folding pressing plate for sealing, due to cord rubber slab itself
Deformation restoring force is limited, causes the deformation of cord rubber slab to reset relatively slow or reset not thoroughly, so that cord rubber slab
Plate end tight ness rating of being fitted with section of jurisdiction it is not high, in turn result in tunnel to originate hole sealing not high, easily produce spillage phenomenon；
The third, using wire brush, cord rubber slab and flap seal, can not so form effective annular seal space, it is impossible to ensure
Sealing effectiveness, above-mentioned three kinds of sealing effectiveness are not highly desirable, all there is portal and overflow the risk of mud and sediment failure, especially compared with
In the stratum of great burying, initial pressure when originating is larger, and very big construction risk is respectively provided with using above-mentioned three kinds of sealing structures.
Authorization Notice No. for CN205638461U utility model patent disclose a kind of tunnel shielding portal cord rubber slab with
The sealing structure of section of jurisdiction, the patent is combined and hole is sealed using cord rubber slab, Flexible Reset plate and folding pressing plate,
But the shortcoming of this patent is：1. being sealed only with one of cord rubber slab, sealing effectiveness is not good；2. due to folding pressing plate
After shield machine outer diameter contact, at the position above hole, folding pressing plate can have gap with shield machine external diameter, and
Gap is non-adjustable, is so easily caused poor sealing, produces spillage phenomenon；3. this patent is not suitable for the hole in larger deep layer
Mouthful, it is poor for applicability.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of slurry shield
Portal sealing structure is originated, the sealing structure uses twice wire brush, twice cord rubber slab, and in twice wire brush and two
The sealing slurry for three sealing intra-bladder instillations that road cord rubber slab is formed with shield machine is sealed to hole, is so carried significantly
High sealing effectiveness, it is to avoid hole is overflow the risk of mud and sediment failure, and the sealing structure when being applied to originate initial pressure compared with
Big stratum, expands and uses scope.
Portal sealing knot is originated in order to solve the above technical problems, the technical solution adopted by the present invention is a kind of slurry shield
Structure, it is characterised in that：Including being arranged at tunnel portal from the inside to the outside the first extension steel loop of parallel laying, the second extension successively
Steel loop and clamping rings, the first extension steel loop are fixedly connected with portal steel loop；
Twice wire brush is provided with the inwall circumferencial direction of the portal steel loop, wire brush described in twice is along portal steel loop
Bearing of trend lay, wire brush described in twice is respectively first of wire brush and the second on the outside of first of wire brush
Wire brush, first of wire brush is made up of multiple first wire brushes, and the second wire brush is by multiple second wire brushes
Composition, the madial wall of one end of first wire brush and one end of the second wire brush with portal steel loop is fastenedly connected, described
The other end of the other end of first wire brush and the second wire brush, which overhangs, to be butted on the outer wall of shield machine；
First of cord rubber slab, second extension are installed between the first extension steel loop and the second extension steel loop
Second cord rubber slab is installed, first of cord rubber slab is by multiple and prolong along first between steel loop and clamping rings
Stretch steel loop circumferencial direction laying the first cord rubber slab composition, the second cord rubber slab by it is multiple and along second extension
The second cord rubber slab composition that steel loop circumferencial direction is laid, one end of the first cord rubber slab and the second cord rubber
One end of offset plate, which is, to be fixedly connected, the other end of the other end of the first cord rubber slab and the second cord rubber slab
Overhang and be butted on the outer wall of shield machine；
The lateral surface of the clamping rings is provided with cord Anchor plate kit；
The first annular seal space formed between first of wire brush, second wire brush and shield machine outer wall, described
The second annular seal space formed between two road wire brushes, first of cord rubber slab and shield machine outer wall, first of cord rubber
The 3rd annular seal space formed between offset plate, second cord rubber slab and shield machine outer wall, the first annular seal space, described second
Sealing slurry is perfused with annular seal space and the 3rd annular seal space；
The first note that slurry is sealed for being irrigated to the first annular seal space is provided with the madial wall of the portal steel loop
Hole is starched, first injected hole is located between first of wire brush and second wire brush, is provided with first injected hole
First Grouting Pipe, one end of first Grouting Pipe is extended to outside structure side wall；Use is offered on the first extension steel loop
It is used in being offered on the second injected hole that sealing slurry is irrigated to second annular seal space, the second extension steel loop to described
3rd injected hole of the 3rd annular seal space perfusion sealing slurry.
A kind of above-mentioned slurry shield originates portal sealing structure, it is characterised in that：The clamping rings is by lower fan annular slab
With upper fan annular composition, the symmetrical center line of the lower fan annular slab and upper fan annular slab is laid vertically, the lower fan annular
Central angle corresponding to plate is 85 °~95 °, and the cord Anchor plate kit is arranged on the lower fan annular slab lateral surface by multiple
Folding pressing plate and multiple fan-shaped pressing plate compositions for being arranged on the upper fan annular, multiple folding pressing plates are along the lower fan ring
The circumferencial direction of shape plate is uniformly laid, and circumferencial direction of multiple fan-shaped pressing plates along the upper fan annular slab is uniformly laid.
A kind of above-mentioned slurry shield originates portal sealing structure, it is characterised in that：Being offered on the fan-shaped pressing plate is used for
The waist-shaped hole of installation site is adjusted, radial direction of the waist-shaped hole along the fan-shaped pressing plate is laid.
A kind of above-mentioned slurry shield originates portal sealing structure, it is characterised in that：First Grouting Pipe extends to structure
One end of side wall is provided with the first control valve；It is provided with second injected hole in the second Grouting Pipe, second Grouting Pipe
It is provided with the second control valve；It is provided with 3rd injected hole in the 3rd Grouting Pipe, the 3rd Grouting Pipe and is provided with the 3rd
Control valve.
A kind of above-mentioned slurry shield originates portal sealing structure, it is characterised in that：First injected hole, the second injected hole
Multiple, circumferencial direction uniform cloth of multiple first injected holes along the portal steel loop is with the quantity of the 3rd injected hole
If circumferencial direction of multiple second injected holes along the described first extension steel loop is uniformly laid, multiple 3rd injected holes
Uniformly laid along the circumferencial direction of the described second extension steel loop.
A kind of above-mentioned slurry shield originates portal sealing structure, it is characterised in that：Offered on the second extension steel loop
Emergent hole, the aperture in the emergent hole, which is more than on the aperture of the 3rd injected hole, the emergent hole, is provided with emergent Grouting Pipe,
Emergency flight control valve is provided with the emergent Grouting Pipe.
A kind of above-mentioned slurry shield originates portal sealing structure, it is characterised in that：First wire brush and described second
The length of wire brush is 420mm~520mm.
A kind of above-mentioned slurry shield originates portal sealing structure, it is characterised in that：The close institute of the second extension steel loop
Elastic plate is provided with the inwall for stating first of cord rubber slab one end, one end of the elastic plate is fixed on second extension
On steel loop inwall, the other end of the elastic plate overhangs.
Meanwhile, the invention also discloses a kind of method and step it is simple, easy to implement, ensure that sealing effectiveness, avoid out
The slurry shield of the excessive mud of existing spillage, even portal and sediment failure originates portal sealing structure construction method, it is characterised in that should
Construction method comprises the following steps：
Step 1: portal steel loop is installed：First Grouting Pipe is installed in the first injected hole, and the first note will be installed in advance
The portal steel loop of slurry pipe is poured in tunnel portal；
Step 2: first of wire brush and second wire brush are installed：First of wire brush is installed first, then installs second
Road wire brush, specific installation process is as follows：
Step 201, first of wire brush are installed：Multiple first steel wires are installed successively along the circumferencial direction of portal steel loop inwall
Brush, the installation process all same of multiple first wire brushes, the installation detailed process of the wire brush of any of which first is as follows：
Step 2011, one end of the first wire brush is fixed on the madial wall of portal steel loop, and first wire brush
Positioned at the inner side of the first injected hole, the other end of first wire brush overhangs；
Step 2012, step 2011 is repeated several times, until completing the installation of first of wire brush；
Step 202, second wire brush are installed：Multiple second steel wires are installed successively along the circumferencial direction of portal steel loop inwall
Brush, the installation process all same of multiple second wire brushes, the installation detailed process of the wire brush of any of which second is as follows：
Step 2021, one end of the second wire brush is fixed on the madial wall of portal steel loop, and second wire brush
Positioned at the outside of the first injected hole, the other end of first wire brush overhangs；
Step 2022, step 2021 is repeated several times, until completing the installation of second wire brush；
Step 3: the first extension steel loop is installed：The the first extension steel loop for offering the second injected hole in advance is lifted to step
Rapid one mounted portal steel loop outside, then the lateral surface of the medial surface and the portal steel loop of the first extension steel loop is fixed
Connection；
Step 4: first of cord rubber slab and the second extension steel loop are installed：First along the first extension steel loop lateral surface
Circumferencial direction installs multiple first cord rubber slabs successively, then second extension steel loop one end and the first cord rubber slab are fixed into company
Connect；The installation process all same of plurality of first cord rubber slab, the specific mistake of installation of any of which the first cord rubber slab
Journey is as follows：
Step 401, one end of the first cord rubber slab is fixed on the lateral surface of the first extension steel loop, first curtain
The other end of cloth rubber slab overhangs；
Step 402, step 401 is repeated several times, until completing the installation of first of cord rubber slab；
Step 5: second cord rubber slab and fixed steel loop are installed：First along the circumference of the second extension steel loop lateral surface
Multiple second cord rubber slabs are installed in direction successively, then fixed steel loop one end is fixedly connected with the second cord rubber slab；Wherein
The installation process all same of multiple second cord rubber slabs, the installation detailed process of any of which the second cord rubber slab is as follows：
Step 501, one end of the second cord rubber slab is fixed on the lateral surface of the second extension steel loop, second curtain
The other end of cloth rubber slab overhangs；
Step 502, step 501 is repeated several times, until completing the installation of second cord rubber slab；
Step 6: cord Anchor plate kit is installed：Cord Anchor plate kit is arranged on to the lateral surface of fixed steel loop；
Step 7: shield machine and rock face and sealing slurry perfusion：Shield machine drives into tunnel portal, makes shield machine
Cutterhead and rock face, then respectively by the first injected hole, the second injected hole and the 3rd injected hole to corresponding first sealing
Chamber, the second annular seal space and the 3rd annular seal space perfusion sealing slurry, until first injected hole, the second injected hole and the 3rd slip casting
Untill there is sealing slurry spilling in hole, the construction that slurry shield originates portal sealing structure is completed.
A kind of above-mentioned slurry shield originates the construction method of portal sealing structure, it is characterised in that：Described in step 5
Clamping rings is made up of lower fan annular slab and upper fan annular slab, and the symmetrical center line of the lower fan annular slab and upper fan annular slab is equal
Vertical to lay, the central angle corresponding to the lower fan annular slab is 85 °~95；Cord Anchor plate kit described in step 6 is by multiple
The folding pressing plate and multiple fan-shaped pressing plate compositions for being arranged on the upper fan annular being arranged on the lower fan annular slab lateral surface,
Circumferencial direction of multiple folding pressing plates along the lower fan annular slab is uniformly laid, and multiple fan-shaped pressing plates are along the upper fan
The circumferencial direction of annular slab is uniformly laid.
The present invention has advantages below compared with prior art：
1. the slurry shield that the present invention is used originates portal sealing structure by twice wire brush, twice cord rubber slab,
What is formed between first wire brush, second wire brush and shield machine is perfused with sealing slurry first annular seal space, second steel
What is formed between wire brush, first of cord rubber slab and shield machine is perfused with the second annular seal space of sealing slurry, first of cord
The 3rd annular seal space for being perfused with sealing slurry formed between rubber slab, second cord rubber slab and shield machine is carried out to hole
Sealing, so substantially increases sealing effectiveness, can effectively prevent that mud overflows when shield launching muddy water storehouse from setting up, it is to avoid because of mud
Slurry overflows the phenomenon for causing sediment failure, it is ensured that the safety that slurry shield is originated.
2. the slurry shield that the present invention is used originates the first extension steel loop described in portal sealing structure and the second extension steel
Ring is detachable, so repeats and utilizes, effectively reduces construction cost.
3. the slurry shield that the present invention is used originates portal sealing structure using multi-sealed, sealing effect has been effectively ensured
Really, be particularly suitable for use in the larger earth formation of initial pressure when originating, and expands and uses scope, can promote the use of.
4. the construction method step that the slurry shield that the present invention is used originates portal sealing structure is simple, first to portal steel
Ring is installed, and portal steel loop is arranged at tunnel portal, that is, realized to the fixation at tunnel portal, while being easy to the
One of wire brush and second wire brush are arranged on portal steel loop madial wall, are easy to the formation of first annular seal space；First of steel
After wire brush and second wire brush installation, then carry out the installation of the first extension steel loop so that the first extension steel loop and hole
Door steel loop lateral surface is fixedly connected, and is prolonged while the installation of the first extension steel loop is easy to first of cord rubber slab being laid in first
Stretch on the lateral surface of steel loop；Then the second extension steel loop is fixedly connected with first of cord rubber slab, so that first of curtain
Cloth rubber slab is located between the first extension steel loop and the second extension steel loop, is so easy to the formation of the second annular seal space；Again second
Extend and second cord rubber slab is installed on the lateral surface of steel loop, and fixed clamping rings is installed with second cord rubber slab
Connection so that second cord rubber slab is located between the second extension steel loop and clamping rings, first cord rubber slab and
The construction of second cord rubber slab is easy to form the 3rd annular seal space, and cord Anchor plate kit is carried out after clamping rings installation
Installation, finally by the first injected hole, the second injected hole and the 3rd injected hole to corresponding first annular seal space, the second annular seal space
With the 3rd annular seal space perfusion sealing slurry, then the construction that slurry shield originates portal sealing structure, whole work progress behaviour are completed
Make simple, and short construction period, and the sealing structure good sealing effect that construction is formed.
In summary, the sealing structure that the present invention is designed uses twice wire brush, twice cord rubber slab, and in twice
The sealing slurry for three sealing intra-bladder instillations that wire brush and twice cord rubber slab are formed with shield machine is sealed to hole,
So substantially increase sealing effectiveness, it is to avoid the risk of the excessive mud in hole and sediment failure, and the sealing structure is suitable for when originating
The larger stratum of initial pressure, expands and uses scope, and construction method step is simple, reasonable in design, short construction period.
Below by drawings and Examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation that slurry shield of the present invention originates portal sealing structure.
Fig. 2 is enlarged drawing at the A in Fig. 1.
Fig. 3 is Fig. 1 right view.
Fig. 4 is the Construction State figure that slurry shield of the present invention originates portal sealing structure.
Fig. 5 is the construction method FB(flow block) that slurry shield of the present invention originates portal sealing structure.
Description of reference numerals:
1-structure side wall；2-portal steel loop；3-first wire brush；
4-second wire brush；5-the first forward flange；6-the first rear flange；
7-first cord rubber slab；8-the second forward flange；9-second cord rubber slab；
10-folding pressing plate；11-the first injected hole；12-the first Grouting Pipe；
13-the first control valve；14-the second injected hole；15-the second Grouting Pipe；
16-the second control valve；17-the first extension steel loop；18-reinforcement；
19-the second extension steel loop；20-the three injected hole；21-the three Grouting Pipe；
22-the three control valve；23-hole of meeting an urgent need；24-Grouting Pipe of meeting an urgent need；
25-emergency flight control valve；26-clamping rings；27-sector pressing plate；
28-elastic plate；29-shield machine；30-waist-shaped hole；
31-the second rear flange.
Embodiment
A kind of slurry shield as shown in Figure 1, Figure 2, Figure 3 and Figure 4 originates portal sealing structure, including is arranged on Tunnel
The first extension steel loop 17, second of parallel laying extends steel loop 19 and clamping rings 26, described first successively from the inside to the outside at door
Extension steel loop 17 is fixedly connected with portal steel loop 2；
Twice wire brush is provided with the inwall circumferencial direction of the portal steel loop 2, wire brush described in twice is along portal steel
The bearing of trend of ring 2 is laid, and wire brush described in twice is respectively first of wire brush 3 and positioned at first of outside of wire brush 3
Second wire brush 4, first of wire brush 3 is made up of multiple first wire brushes, and the second wire brush 4 is by multiple
Two wire brushes are constituted, and the madial wall of one end of first wire brush and one end of the second wire brush with portal steel loop 2 is fastened
Connection, the other end of first wire brush and the other end of the second wire brush overhang and are butted on the outer wall of shield machine 29；
First of cord rubber slab 7 be installed between the first extension steel loop 17 and second extension steel loop 19, described the
Second cord rubber slab 9 is installed between two extension steel loops 19 and clamping rings 26, first of cord rubber slab 7 is by more
The first cord rubber slab that is individual and being laid along the first extension steel loop 17 circumferencial direction is constituted, the second cord rubber slab 9 by
The second cord rubber slab that is multiple and being laid along the second extension steel loop 19 circumferencial direction is constituted, and the one of the first cord rubber slab
End is with one end of the second cord rubber slab to be fixedly connected, the other end of the first cord rubber slab and described second
The other end of cord rubber slab, which overhangs, to be butted on the outer wall of shield machine 29；
The lateral surface of the clamping rings 26 is provided with cord Anchor plate kit；
The first annular seal space formed between first of wire brush 3, second wire brush 4 and the outer wall of shield machine 29, institute
State the second annular seal space formed between second wire brush 4, first of cord rubber slab 7 and the outer wall of shield machine 29, described first
The 3rd annular seal space formed between road cord rubber slab 7, second cord rubber slab 9 and the outer wall of shield machine 29, described first is close
Sealing slurry is perfused with envelope chamber, second annular seal space and the 3rd annular seal space；
The first note that slurry is sealed for being irrigated to the first annular seal space is provided with the madial wall of the portal steel loop 2
Hole 11 is starched, first injected hole 11 is located between first of wire brush 3 and second wire brush 4, first injected hole 11
On the first Grouting Pipe 12 is installed, one end of first Grouting Pipe 12 is extended to outside structure side wall 1, it is described first extension steel
The second injected hole 14 that slurry is sealed for being irrigated to second annular seal space, the second extension steel loop 19 are offered on ring 17
On offer for the 3rd annular seal space irrigate seal slurry the 3rd injected hole 20.
During specific implementation, using first of wire brush 3, second wire brush 4, first of cord rubber slab 7, second curtain
Cloth rubber slab 9, first annular seal space, the second annular seal space and the 3rd annular seal space for being perfused with sealing slurry is sealed to hole, is led to
Cross septuple sealing structure can effectively prevent shield machine 29 originate build pressure during muddy water spillover, improve sealing effectiveness.
In the present embodiment, the clamping rings 26 is made up of lower fan annular slab and upper fan annular, the lower fan annular slab and
The symmetrical center line of upper fan annular slab is laid vertically, and the central angle alpha corresponding to the lower fan annular slab is 85 °~95 °, described
Cord Anchor plate kit is by multiple folding pressing plates 10 being arranged on the lower fan annular slab lateral surface and multiple is arranged on described
The fan-shaped pressing plate 27 of fan annular is constituted, and circumferencial direction of multiple folding pressing plates 10 along the lower fan annular slab is uniformly laid,
Circumferencial direction of multiple fan-shaped pressing plates 27 along the upper fan annular slab is uniformly laid, and use is offered on the fan-shaped pressing plate 27
In the waist-shaped hole 30 of regulation installation site, radial direction of the waist-shaped hole 30 along the fan-shaped pressing plate 27 is opened up, using folding
Pressing plate 10 and the benefit of adjustable fan-shaped pressing plate 27 combination are：The folding pressing plate 10 is laid in corresponding central angle alpha
On end face of 85 °~95 ° of the lower fan annular slab away from the clamping rings 26, after shield machine 29 is originated, folding pressing plate is installed
10 position is in the lower section of shield machine 29, and the outer wall and folding pressure of shield machine 29 can be so made using the deadweight of shield machine 29
Plate 10 is fitted, it is to avoid shield machine 29 gap occurs between the two with folding pressing plate 10, and other positions set fan-shaped pressing plate 27, shield
After machine 29 is originated, when there is gap between the outer wall of shield machine 29 and fan-shaped pressing plate 27, fan-shaped pressure can be adjusted by waist-shaped hole 30
The installation site of plate 27, so as to adjust the gap between fan-shaped pressing plate 27 and shield machine 29, it is to avoid cause muddy water due to gap
Spillover.
In the present embodiment, one end that first Grouting Pipe 12 extends to structure side wall 1 is provided with the first control valve 13；Institute
State and the second Grouting Pipe 15 is installed on second injected hole 14, the second control valve 16 is provided with second Grouting Pipe 15；It is described
It is provided with 3rd injected hole 20 in the 3rd Grouting Pipe 21, the 3rd Grouting Pipe 21 and is provided with the 3rd control valve 22, is specifically made
Used time, the first control valve 13, second control control valve 22 of valve 16 and the 3rd is ball valve, passes through the first control valve 13, the
The two control control valves 22 of valve 16 and the 3rd can control the sealing slurry injected in annular seal space, simple in construction, easy to operate.
In the present embodiment, the quantity of first injected hole 11, the second injected hole 14 and the 3rd injected hole 20 be it is multiple,
Circumferential direction of multiple first injected holes 11 along the portal steel loop 2 is uniformly laid, multiple edges of second injected hole 14
The circumferential direction of the first extension steel loop 17 is uniformly laid, and multiple 3rd injected holes 20 extend steel loop 19 along described second
Circumferential direction uniformly lay, it is preferred that the quantity of first injected hole 11, the second injected hole 14 and the 3rd injected hole 20 is equal
For 7~10.
In the present embodiment, emergent hole 23 is offered on the second extension steel loop 19, the aperture in the emergent hole 23 is more than
It is provided with emergent Grouting Pipe 24, the emergent Grouting Pipe 24 and is provided with the aperture of 3rd injected hole 20, the emergent hole 23
Emergency flight control valve 25, the quantity in the emergent hole 23 is one, and the purpose so designed is：During originating and building pressure, if having
Muddy water, which overflows, to prevent that the larger muddy water of pressure from overflowing, it is ensured that sealing knot by the larger injection of the emergent hole 23 sealing slurry in aperture
The sealing of structure.
In the present embodiment, the length of first wire brush and second wire brush is 420mm~520mm, uses
Length is 420mm~520mm extended type wire brush, and the gap between wire brush and the outer wall of shield machine 29 can be made smaller,
Sealing effectiveness is more preferable.
In the present embodiment, on the inwall of close described one end of first of cord rubber slab 7 of the second extension steel loop 19
Elastic plate 28 is provided with, one end of the elastic plate 28 is fixed on the second extension inwall of steel loop 19, the elastic plate 28
The other end overhang, the elastic plate 28 can protect first of cord rubber slab 7, and can make first of cord rubber slab 7
Wall contacts with shield machine 29 are close, improve sealing effectiveness, during specific implementation, and the elastic plate 28 is Rectangular Elastic plate or L
Type elastic plate, the transverse slat of the L-type elastic plate is fixed on the inwall of the second extension steel loop 19, and the riser of the L-type elastic plate hangs
Stretch.
During specific implementation, one end of the first extension steel loop 17 is provided with the first forward flange 5, the first extension steel loop
17 other end is provided with the first rear flange 6, and one end of the second extension steel loop 19 is provided with the second forward flange 8, and described the
The other end of two extension steel loops 19 is provided with the second rear flange 31, and one end of the first extension steel loop 17 leads to portal steel loop 2
The bolt connection being arranged on the first forward flange 5 is crossed, the forward flange 8 of the first rear flange 6 and second is oppositely arranged, described first
The one end of road cord rubber slab 7 is fixed between the first rear flange 6 and the second forward flange 8, it is described first extension steel loop 17, first
The extension steel loop 19 of cord rubber slab 7 and second passes through the bolt connection on the first rear flange 6 and the second forward flange 8, institute
State the second extension steel loop 19, second cord rubber slab 9, clamping rings 26 and cord Anchor plate kit and pass through the method after second
Bolt connection on orchid 31, so designs easy disassembly, and the first extension extension steel loop 19 of steel loop 17 and second of dismounting can be weighed
It is multiple to utilize, reduce construction cost.
With reference to Fig. 1 to Fig. 5, a kind of slurry shield of the invention originates the construction method of portal sealing structure, including following step
Suddenly：
Step 1: portal steel loop is installed：First Grouting Pipe 12 is installed in the first injected hole 11, and the will be provided with advance
The portal steel loop 2 of one Grouting Pipe 12 is poured in tunnel portal；
Step 2: first of wire brush and second wire brush are installed：First of wire brush 3 is installed first, then installs
Two road wire brushes 4, specific installation process is as follows：
Step 201, first of wire brush are installed：Multiple first steel are installed successively along the circumferencial direction of the inwall of portal steel loop 2
Wire brush, the installation process all same of multiple first wire brushes, the installation detailed process of the wire brush of any of which first is as follows：
Step 2011, one end of the first wire brush is fixed on the madial wall of portal steel loop 2, and first wire brush
Positioned at the inner side of the first injected hole 11, the other end of first wire brush overhangs；
Step 2012, step 2011 is repeated several times, until completing the installation of first of wire brush 3；
Step 202, second wire brush are installed：Multiple second steel are installed successively along the circumferencial direction of the inwall of portal steel loop 2
Wire brush, the installation process all same of multiple second wire brushes, the installation detailed process of the wire brush of any of which second is as follows：
Step 2021, one end of the second wire brush is fixed on the madial wall of portal steel loop 2, and second wire brush
Positioned at the outside of the first injected hole 11, the other end of first wire brush overhangs；
Step 2022, step 2021 is repeated several times, until completing the installation of second wire brush 4；
Step 3: the first extension steel loop is installed：The the first extension steel loop 17 for offering the second injected hole 14 in advance is lifted by crane
To step one outside of mounted portal steel loop 2, then by the outer of the medial surface of the first extension steel loop 17 and the portal steel loop 2
Side is fixedly connected；
Step 4: first of cord rubber slab and the second extension steel loop are installed：First along the first extension lateral surface of steel loop 17
Circumferencial direction multiple first cord rubber slabs are installed successively, then second extension one end of steel loop 19 is consolidated with the first cord rubber slab
Fixed connection；The installation process all same of plurality of first cord rubber slab, the installation tool of any of which the first cord rubber slab
Body process is as follows：
Step 401, one end of the first cord rubber slab is fixed on the lateral surface of the first extension steel loop 17, described first
The other end of cord rubber slab overhangs；
Step 402, step 401 is repeated several times, until completing the installation of first of cord rubber slab 7；
Step 5: second cord rubber slab and fixed steel loop are installed：First along the circle of the second extension lateral surface of steel loop 19
Circumferential direction installs multiple second cord rubber slabs successively, then fixed one end of steel loop 26 is fixedly connected with the second cord rubber slab；
The installation process all same of plurality of second cord rubber slab, the installation detailed process of any of which the second cord rubber slab is such as
Under：
Step 501, one end of the second cord rubber slab is fixed on the lateral surface of the second extension steel loop 19, described second
The other end of cord rubber slab overhangs；
Step 502, step 501 is repeated several times, until completing the installation of second cord rubber slab 9；
Step 6: cord Anchor plate kit is installed：Cord Anchor plate kit is arranged on to the lateral surface of fixed steel loop 26；
Step 7: shield machine and rock face and sealing slurry perfusion：Shield machine 29 drives into tunnel portal, makes shield machine
29 cutterhead and rock face, then respectively by the first injected hole 11, the second injected hole 14 and the 3rd injected hole 20 to correspondingly
First annular seal space, the second annular seal space and the 3rd annular seal space perfusion sealing slurry, until first injected hole 11, the second slip casting
Untill the injected hole 20 of hole 14 and the 3rd has sealing slurry spilling, the construction that slurry shield originates portal sealing structure is completed.
Wherein, clamping rings 26 described in step 5 is made up of lower fan annular slab and upper fan annular slab, the lower fan annular
The symmetrical center line of plate and upper fan annular slab is laid vertically, and the central angle corresponding to the lower fan annular slab is 85 °~95, step
Cord Anchor plate kit described in rapid six is by multiple folding pressing plates 10 being arranged on the lower fan annular slab lateral surface and multiple sets
Put fanned on described annular fan-shaped pressing plate 27 constitute, circumferencial direction of multiple folding pressing plates 10 along the lower fan annular slab
Uniform to lay, circumferencial direction of multiple fan-shaped pressing plates 27 along the upper fan annular slab is uniformly laid.
During Specific construction, the junction of the second extension forward flange 8 of steel loop 19 and second and the second extension steel loop 19
Reinforcement 18 is provided with the junction of the second rear flange 31, reinforcement 18 ensure that the stability of whole sealing structure.
In the present embodiment, the sealing slurry is the viscosity height of grease or Polyurethane, grease and Polyurethane, sealing property
It is good.
In the present embodiment, portal steel loop is arranged at tunnel portal, that is, realized to the preliminary fixation at tunnel portal,
It is easy to first of wire brush 3 and second wire brush 4 being arranged on portal steel loop madial wall simultaneously, first of He of wire brush 3
It is easy to the formation of first annular seal space between second wire brush 4；First of wire brush 3 and the installation of second wire brush 4 it
Afterwards, then the installation of the first extension steel loop 17 is carried out so that the first extension steel loop 17 is fixedly connected with the lateral surface of portal steel loop 2, together
When first extension steel loop 17 installation be easy to first of cord rubber slab 7 being laid on 17 lateral surfaces of the first extension steel loop；
Then the second extension steel loop 19 is fixedly connected with first of cord rubber slab 7, so that first cord rubber slab 7 is positioned at the
Between the one extension extension steel loop 19 of steel loop 17 and second, so it is easy to the formation of the second annular seal space；Extend steel loop 19 second again
Lateral surface on second cord rubber slab 9 is installed, and clamping rings 26 and the company of fixation of second cord rubber slab 9 will be installed
Connect, so that second cord rubber slab 9 is located between the second extension steel loop 19 and clamping rings 26, first of cord rubber slab
7 and the construction of second cord rubber slab 9 be easy to form the 3rd annular seal space, cord pressure is carried out after the installation of clamping rings 26
The installation of board component, is sealed finally by the first injected hole 11, the second injected hole 14 and the 3rd injected hole 20 to corresponding first
Chamber, the second annular seal space and the 3rd annular seal space perfusion sealing slurry, then complete the construction that slurry shield originates portal sealing structure.
The above, is only presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, every according to the present invention
Any simple modification, change and equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention
In the protection domain of art scheme.
Claims (10)
1. a kind of slurry shield originates portal sealing structure, it is characterised in that：Including be arranged at tunnel portal from the inside to the outside according to
The first extension steel loop (17), the second extension steel loop (19) and the clamping rings (26) of secondary parallel laying, the first extension steel loop
(17) it is fixedly connected with portal steel loop (2)；
Twice wire brush is provided with the inwall circumferencial direction of the portal steel loop (2), wire brush described in twice is along portal steel loop
(2) bearing of trend is laid, wire brush described in twice be respectively first of wire brush (3) and positioned at first of wire brush (3) outside
The second wire brush (4) of side, first of wire brush (3) is made up of multiple first wire brushes, the second wire brush
(4) be made up of multiple second wire brushes, one end of first wire brush and one end of the second wire brush with portal steel loop (2)
Madial wall be fastenedly connected, the other end of first wire brush and the other end of the second wire brush overhang and are butted on shield machine
(29) on outer wall；
First of cord rubber slab (7) is installed between the first extension steel loop (17) and the second extension steel loop (19), it is described
Second cord rubber slab (9), first of cord rubber are installed between second extension steel loop (19) and clamping rings (26)
Offset plate (7) is made up of the first cord rubber slab that is multiple and being laid along first extension steel loop (17) circumferencial direction, the second
Cord rubber slab (9) is made up of the second cord rubber slab that is multiple and being laid along second extension steel loop (19) circumferencial direction, described
One end of first cord rubber slab is with one end of the second cord rubber slab and is fixedly connected, the first cord rubber slab
The other end and the other end of the second cord rubber slab overhang and be butted on the outer wall of shield machine (29)；
The lateral surface of the clamping rings (26) is provided with cord Anchor plate kit；
The first annular seal space formed between first of wire brush (3), second wire brush (4) and shield machine (29) outer wall,
The second annular seal space formed between the second wire brush (4), first of cord rubber slab (7) and shield machine (29) outer wall,
The 3rd sealing formed between first of cord rubber slab (7), second cord rubber slab (9) and shield machine (29) outer wall
Sealing slurry is perfused with chamber, the first annular seal space, second annular seal space and the 3rd annular seal space；
The first slip casting that slurry is sealed for being irrigated to the first annular seal space is provided with the madial wall of the portal steel loop (2)
Hole (11), first injected hole (11) is located between first of wire brush (3) and second wire brush (4), first note
First Grouting Pipe (12) is installed, one end of first Grouting Pipe (12) extends to structure side wall (1) outside on slurry hole (11),
The second injected hole (14) that slurry is sealed for being irrigated to second annular seal space is offered on the first extension steel loop (17),
The 3rd injected hole (20) that slurry is sealed for being irrigated to the 3rd annular seal space is offered on the second extension steel loop (19).
2. a kind of slurry shield according to claim 1 originates portal sealing structure, it is characterised in that：The clamping rings
(26) it is made up of lower fan annular slab and upper fan annular, the vertical cloth of symmetrical center line of the lower fan annular slab and upper fan annular slab
If central angle corresponding to the lower fan annular slab is 85 °~95 °, the cord Anchor plate kit by it is multiple be arranged on it is described under
Folding pressing plate (10) and multiple fan-shaped pressing plate (27) compositions for being arranged on the upper fan annular on fan annular slab lateral surface, it is multiple
Circumferencial direction of the folding pressing plate (10) along the lower fan annular slab is uniformly laid, and multiple fan-shaped pressing plates (27) are along described
The circumferencial direction of upper fan annular slab is uniformly laid.
3. a kind of slurry shield according to claim 2 originates portal sealing structure, it is characterised in that：The fan-shaped pressing plate
(27) waist-shaped hole (30) for adjusting installation site, footpath of the waist-shaped hole (30) along the fan-shaped pressing plate (27) are offered on
Laid to direction.
4. a kind of slurry shield according to claim 1 or 2 originates portal sealing structure, it is characterised in that：Described first
One end that Grouting Pipe (12) extends to structure side wall (1) is provided with the first control valve (13)；Pacify on second injected hole (14)
Equipped with the second Grouting Pipe (15), the second control valve (16) is provided with second Grouting Pipe (15)；3rd injected hole
(20) it is provided with the 3rd Grouting Pipe (21), the 3rd Grouting Pipe (21) and is provided with the 3rd control valve (22).
5. a kind of slurry shield according to claim 1 or 2 originates portal sealing structure, it is characterised in that：Described first
The quantity of injected hole (11), the second injected hole (14) and the 3rd injected hole (20) is multiple, multiple first injected holes
(11) uniformly laid along the circumferencial direction of the portal steel loop (2), multiple second injected holes (14) extend along described first
The circumferencial direction of steel loop (17) is uniformly laid, circumference of multiple 3rd injected holes (20) along the described second extension steel loop (19)
Uniformly lay in direction.
6. a kind of slurry shield according to claim 1 or 2 originates portal sealing structure, it is characterised in that：Described second
Emergent hole (23) is offered on extension steel loop (19), the aperture of the emergent hole (23) is more than the hole of the 3rd injected hole (20)
It is provided with footpath, the emergent hole (23) on emergent Grouting Pipe (24), the emergent Grouting Pipe (24) and is provided with emergency flight control valve
(25)。
7. a kind of slurry shield according to claim 1 or 2 originates portal sealing structure, it is characterised in that：Described first
The length of wire brush and second wire brush is 420mm~520mm.
8. a kind of slurry shield according to claim 1 or 2 originates portal sealing structure, it is characterised in that：Described second
Extension steel loop (19) is provided with elastic plate (28), the elastic plate on the inwall of first of cord rubber slab (7)
(28) one end is fixed on described second extension steel loop (19) inwall, and the other end of the elastic plate (28) overhangs.
9. a kind of slurry shield to described in claim 1 originates the method that portal sealing structure is constructed, it is characterised in that
The construction method comprises the following steps：
Step 1: portal steel loop is installed：First Grouting Pipe (12) is installed in the first injected hole (11), and the will be provided with advance
The portal steel loop (2) of one Grouting Pipe (12) is poured in tunnel portal；
Step 2: first of wire brush and second wire brush are installed：First of wire brush (3) is installed first, then installs second
Road wire brush (4), specific installation process is as follows：
Step 201, first of wire brush are installed：Multiple first steel wires are installed successively along the circumferencial direction of portal steel loop (2) inwall
Brush, the installation process all same of multiple first wire brushes, the installation detailed process of the wire brush of any of which first is as follows：
Step 2011, one end of the first wire brush is fixed on the madial wall of portal steel loop (2), and first wire brush position
Inner side in the first injected hole (11), the other end of first wire brush overhangs；
Step 2012, step 2011 is repeated several times, until completing the installation of first of wire brush (3)；
Step 202, second wire brush are installed：Multiple second steel wires are installed successively along the circumferencial direction of portal steel loop (2) inwall
Brush, the installation process all same of multiple second wire brushes, the installation detailed process of the wire brush of any of which second is as follows：
Step 2021, one end of the second wire brush is fixed on the madial wall of portal steel loop (2), and second wire brush position
Outside in the first injected hole (11), the other end of first wire brush overhangs；
Step 2022, step 2021 is repeated several times, until completing the installation of second wire brush (4)；
Step 3: the first extension steel loop is installed：The first extension steel loop (17) lifting of the second injected hole (14) will be offered in advance
To step one mounted portal steel loop (2), then by the medial surface and the portal steel loop of the first extension steel loop (17)
(2) lateral surface is fixedly connected；
Step 4: first of cord rubber slab and the second extension steel loop are installed：First along first extension steel loop (17) lateral surface
Circumferencial direction installs multiple first cord rubber slabs successively, then second extension steel loop (19) one end and the first cord rubber slab are consolidated
Fixed connection；The installation process all same of plurality of first cord rubber slab, the installation tool of any of which the first cord rubber slab
Body process is as follows：
Step 401, one end of the first cord rubber slab is fixed on the lateral surface of the first extension steel loop (17), first curtain
The other end of cloth rubber slab overhangs；
Step 402, step 401 is repeated several times, until completing the installation of first of cord rubber slab (7)；
Step 5: second cord rubber slab and fixed steel loop are installed：First along the circumference of second extension steel loop (19) lateral surface
Multiple second cord rubber slabs are installed in direction successively, then fixed steel loop (26) one end is fixedly connected with the second cord rubber slab；
The installation process all same of plurality of second cord rubber slab, the installation detailed process of any of which the second cord rubber slab is such as
Under：
Step 501, one end of the second cord rubber slab is fixed on the lateral surface of the second extension steel loop (19), second curtain
The other end of cloth rubber slab overhangs；
Step 502, step 501 is repeated several times, until completing the installation of second cord rubber slab (9)；
Step 6: cord Anchor plate kit is installed：Cord Anchor plate kit is arranged on to the lateral surface of fixed steel loop (26)；
Step 7: shield machine and rock face and sealing slurry perfusion：Shield machine (29) drives into tunnel portal, makes shield machine
(29) cutterhead and rock face, then pass through the first injected hole (11), the second injected hole (14) and the 3rd injected hole respectively
(20) to corresponding first annular seal space, the second annular seal space and the 3rd annular seal space perfusion sealing slurry, until first injected hole
(11) untill, the second injected hole (14) and the 3rd injected hole (20) have sealing slurry spilling, it is close that completion slurry shield originates portal
The construction of seal structure.
10. method according to claim 9, it is characterised in that：Clamping rings described in step 5 (26) is by lower fan annular
The symmetrical center line of plate and upper fan annular slab composition, the lower fan annular slab and upper fan annular slab is laid vertically, the lower fan
Central angle corresponding to annular slab is 85 °~95；Cord Anchor plate kit described in step 6 is arranged on the lower fan ring by multiple
Folding pressing plate (10) and multiple fan-shaped pressing plate (27) compositions for being arranged on the upper fan annular on shape plate lateral surface, it is multiple described
Circumferencial direction of the folding pressing plate (10) along the lower fan annular slab is uniformly laid, and multiple fan-shaped pressing plates (27) are along the upper fan
The circumferencial direction of annular slab is uniformly laid.
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| CN201710297797.XA CN106948829B (en) | 2017-04-29 | 2017-04-29 | Sealing structure of originating tunnel portal of slurry shield and construction method thereof |
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| CN112211641A (en) * | 2020-11-03 | 2021-01-12 | 中建八局轨道交通建设有限公司 | Sealing structure of shield starting tunnel portal and construction method thereof |
| CN112983445A (en) * | 2021-03-11 | 2021-06-18 | 中铁三局集团华东建设有限公司 | Water-rich sand layer shield launching method and device based on portal extension ring device |
| 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 |
| CN113605921A (en) * | 2021-09-02 | 2021-11-05 | 中庆建设有限责任公司 | Shield tunneling machine starting extension steel ring construction method |
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