CN106285697A - Double-shielded TBM closed-loop construction method - Google Patents
Double-shielded TBM closed-loop construction method Download PDFInfo
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- CN106285697A CN106285697A CN201610748716.9A CN201610748716A CN106285697A CN 106285697 A CN106285697 A CN 106285697A CN 201610748716 A CN201610748716 A CN 201610748716A CN 106285697 A CN106285697 A CN 106285697A
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- 238000010276 construction Methods 0.000 title claims abstract description 45
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 110
- 239000004568 cement Substances 0.000 claims abstract description 52
- 239000000084 colloidal system Substances 0.000 claims abstract description 45
- 238000007711 solidification Methods 0.000 claims abstract description 45
- 230000008023 solidification Effects 0.000 claims abstract description 45
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 35
- 239000011435 rock Substances 0.000 claims abstract description 19
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims abstract description 14
- 244000046052 Phaseolus vulgaris Species 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 239000002270 dispersing agent Substances 0.000 claims description 31
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 26
- LUEWUZLMQUOBSB-FSKGGBMCSA-N (2s,3s,4s,5s,6r)-2-[(2r,3s,4r,5r,6s)-6-[(2r,3s,4r,5s,6s)-4,5-dihydroxy-2-(hydroxymethyl)-6-[(2r,4r,5s,6r)-4,5,6-trihydroxy-2-(hydroxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-4,5-dihydroxy-2-(hydroxymethyl)oxan-3-yl]oxy-6-(hydroxymethyl)oxane-3,4,5-triol Chemical compound O[C@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@@H](O[C@@H]2[C@H](O[C@@H](OC3[C@H](O[C@@H](O)[C@@H](O)[C@H]3O)CO)[C@@H](O)[C@H]2O)CO)[C@H](O)[C@H]1O LUEWUZLMQUOBSB-FSKGGBMCSA-N 0.000 claims description 21
- 229920002581 Glucomannan Polymers 0.000 claims description 21
- 229920002752 Konjac Polymers 0.000 claims description 21
- 229940046240 glucomannan Drugs 0.000 claims description 21
- 235000010485 konjac Nutrition 0.000 claims description 21
- 239000004576 sand Substances 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 17
- 210000002966 serum Anatomy 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 150000004760 silicates Chemical class 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 2
- WJEIYVAPNMUNIU-UHFFFAOYSA-N [Na].OC(O)=O Chemical group [Na].OC(O)=O WJEIYVAPNMUNIU-UHFFFAOYSA-N 0.000 claims 1
- 229940025902 konjac mannan Drugs 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 21
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000008602 contraction Effects 0.000 abstract description 6
- 239000002002 slurry Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 208000037656 Respiratory Sounds Diseases 0.000 abstract description 2
- 239000006071 cream Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 239000011083 cement mortar Substances 0.000 description 6
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000001418 larval effect Effects 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 230000003252 repetitive effect Effects 0.000 description 3
- 230000000452 restraining effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
- E21D9/0607—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield being provided with devices for lining the tunnel, e.g. shuttering
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- 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
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention provides a kind of double-shielded TBM closed-loop construction method, comprise the following steps: one, choose raw material: cement, colloid adjustable solidification agent, Sha Heshui；Two, joining in forced mixer, stirring obtains paste mortar；Three, manual work position is determined；Four, paste mortar is transported to manual work position, then paste mortar is applied in the periphery, front end of assembly, to clog the space between assembly and bean gravel and country rock, after hardening, obtain a complete closed-loop.Colloid adjustable solidification agent is used in closed-loop construction technology by the present invention, and beneficially cream slurry is combined with section of jurisdiction and country rock, adjustable setting time simultaneously, the contraction of Cement paste can be suppressed, ungauged regions after Cement paste calculus, has microdilatancy effect, is prevented effectively from the appearance in crackle or crack., there is not construction blind area in constructing operation simple, intuitive of the present invention, the making effect of closed-loop is ideal, and sealing effect is excellent.
Description
Technical field
The invention belongs to TBM technical field of construction, be specifically related to a kind of double-shielded TBM closed-loop novel construction method.
Background technology
In double-shielded TBM work progress, need after pipe-plate lining carrying out rockfill grouting after wall, and in rockfill grouting
Time, in order to quickly play pressure, it is ensured that grouting quality, need to carry out packer grouting, it is necessary to make closed-loop.
Traditional closed-loop way is to utilize dual slurry, waterglass, coagulating agent to carry out, by changing filling pipe, the form that spray is solidifying,
Forming an annular concretion between section of jurisdiction outer wall and crag, form closed-loop, this kind of method due to constructing operation not intuitively, exists
Blind area, the making effect of closed-loop is the most undesirable, does not often have " effect " of closing.
Summary of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, it is provided that a kind of double-shielded TBM
Closed-loop construction method., there is not construction blind area, the non-convention of making effect of closed-loop in the method constructing operation simple, intuitive
Thinking, sealing effect is excellent.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of double-shielded TBM closed-loop construction party
Method, it is characterised in that the method comprises the following steps:
Step one, choose following raw material:
A. cement；
B. colloid adjustable solidification agent；Described colloid adjustable solidification agent is by konjak glucomannan, carbonate, rheological agent, dispersant, morning by force
Agent and water is the most agitated, distill, pulverize, dried and screened are made, the addition of described colloid adjustable solidification agent is cement quality
3%～5%；
C. sand；The addition of described sand is the 50%～100% of cement quality；
D. water；The addition of described water is cement, colloid adjustable solidification agent and the 30% of sand gross mass～40%；
Step 2, prepare paste mortar: colloid adjustable solidification agent selected in step one, cement, sand and water are added successively
In forced mixer, after stirring 1min～2min, obtain paste mortar；
Step 3, determine manual work position: use double-shielded TBM that section of jurisdiction is installed, until the section of jurisdiction installed
A length of 45m～60m, then in the end installing section of jurisdiction, section of jurisdiction at the bottom of a piece is installed again, being combined into a front end is spade
Tubular assembly, utilize that TBM auxiliary cylinder is counter pushes away this assembly afterwards, make to depart between TBM tail shield and assembly, expose one
Bar width is the space of 100mm～150mm, and the space exposed is defined as manual work position；
Step 4, construction: employing carries charging basket and paste mortar described in step 2 is transported to the work of people described in step 3
Industry position, then uses spatula that paste mortar is applied in the periphery, front end of assembly, with clog assembly and bean gravel and
Space between country rock, obtains a closed-loop after hardening.
Above-mentioned double-shielded TBM closed-loop construction method, it is characterised in that the preparation of colloid adjustable solidification agent described in step one
Method is: first konjak glucomannan, carbonate, rheological agent, dispersant and early strength agent is added water respectively and fully dissolves,
Then konjak glucomannan solution, carbonate solution, rheological agent solution, dispersant solution and the morning that will obtain after fully dissolving
Strong agent solution is uniformly mixing to obtain mixed serum, then carries out described mixed serum successively distilling, pulverize, be spray-dried and sieving
Process, obtain colloid adjustable solidification agent；The form of described colloid adjustable solidification agent is powdery, described konjak glucomannan, carbonate, rheology
The weight ratio of agent, dispersant and early strength agent is 40: 25: 10: 15: 10, and in described mixed serum, the mass concentration of solid solute is
25%～35%.
Above-mentioned double-shielded TBM closed-loop construction method, it is characterised in that described carbonate is sodium carbonate, and described morning is strong
Agent is FN type concrete early strength agent, and described dispersant is dispersant NNO, and described rheological agent is aluminium magensium silicate class rheological agent.
Above-mentioned double-shielded TBM closed-loop construction method, it is characterised in that water described in step one is domestic water.
Above-mentioned double-shielded TBM closed-loop construction method, it is characterised in that cement described in step one be No. 42.5 fast hard
Sulphate aluminium cement.
The present invention compared with prior art has the advantage that
1, the gum components of colloid adjustable solidification agent of the present invention is by high molecular polymer (konjak glucomannan) and slow setting composition
(carbonate, rheological agent, dispersant and early strength agent) compound composition, is made an addition in Cement paste, beneficially Cement paste with
Section of jurisdiction and the combination of country rock, simultaneously adjustable setting time (setting time can be controlled between 30min～120min), it is possible to press down
The contraction of Cement paste processed, ungauged regions after Cement paste calculus, there is microdilatancy effect.
2, colloid adjustable solidification agent of the present invention with konjak glucomannan (KGM) as main component, use KGM make an addition to cement,
In water and sand, it is high and can play that thickening, adhesive aggregation, suspension, fluidity loss be little, bleeding that the Cement paste formed has viscosity
Rate is low, meet water be difficult to dispersion, Fast Filling and stick space, setting time is short, improve the early strength of calculus, calculus rate is high,
The superperformances such as infiltration coefficient is little.Thus, this colloid adjustable solidification agent is used in the construction technology of closed-loop by the present invention, beneficially cream
Slurry is combined with section of jurisdiction and country rock, adjustable setting time simultaneously, it is possible to the contraction of suppression Cement paste, nothing after Cement paste calculus
Shrink, have microdilatancy effect, it is possible to be prevented effectively from the appearance in crackle or crack.
3, the closed-loop construction method designed by the present invention is a kind of novel construction method.Traditional handicraft is by TBM master
After machine equipment moves forward, at rear mated position, the mode that employingization fills uses dual slurry, water glass by bean gravel pack hole
Glass, accelerator make, and have intuitively, there is construction blind area, closed-loop material input greatly, and the bad grade of sealing effect is serious
Technological deficiency.The present invention, through bold innovation, devises the closed-loop construction method of a kind of abnormity, constructing operation simple, intuitive,
There is not construction blind area, the making effect of closed-loop is ideal, and sealing effect is excellent.
With embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the double-shielded TBM closed-loop of the present invention position relationship schematic diagram in tunnel structure.
Fig. 2 is the position relationship schematic diagram of double-shielded TBM closed-loop of the present invention and assembly.
Description of reference numerals:
1 section of jurisdiction；Section of jurisdiction at the bottom of 1-1；2 bean gravels；
3 country rocks；4 closed-loops.
Detailed description of the invention
Embodiment 1
The present embodiment double-shielded TBM closed-loop construction method comprises the following steps:
Step one, choose following raw material:
A. cement；
B. colloid adjustable solidification agent；Described colloid adjustable solidification agent is by konjak glucomannan, carbonate, rheological agent, dispersant, morning by force
Agent and water is the most agitated, distill and pulverizing forms, addition is cement quality the 4% of described colloid adjustable solidification agent；
C. sand；The addition of described sand is equal with cement quality；
D. water；The addition of described water is cement, colloid adjustable solidification agent and the 35% of sand gross mass；
In the present embodiment, the preparation method of described colloid adjustable solidification agent is: first by konjak glucomannan, carbonate, stream
Become agent, dispersant and early strength agent to add water respectively and fully dissolve, the konjak glucomannan obtained after then fully dissolving
Solution, carbonate solution, rheological agent solution, dispersant solution and early strength agent solution stirring are uniform obtains mixed serum, then by described
Mixed serum carries out distilling successively, pulverize, be spray-dried and cross 500 mesh sieves in 100 DEG C processes, and obtains the colloid that form is powdery
Adjustable solidification agent；Wherein, the weight ratio of described konjak glucomannan, carbonate, rheological agent, dispersant and early strength agent is 40: 25: 10
: 15: 10, in described mixed serum, the mass concentration of solid solute is 30%；
In the present embodiment, described carbonate is sodium carbonate, and described early strength agent is FN type concrete early strength agent, described dispersant
For dispersant NNO, described rheological agent is aluminium magensium silicate class rheological agent；
In the present embodiment, described water is domestic water；
In the present embodiment, described cement is No. 42.5 quick hardening sulphoaluminate cements；
Step 2, prepare paste mortar: colloid adjustable solidification agent selected in step one, cement, sand and water are added successively
In forced mixer, after stirring 1min～2min, obtain paste mortar；
Step 3, determine manual work position: use double-shielded TBM that section of jurisdiction 1 is installed, until the section of jurisdiction installed
The a length of 50m of 1, then installs section of jurisdiction 1-1 at the bottom of a piece again in the end installing section of jurisdiction 1, and being combined into a front end is spade
Tubular assembly, utilize that TBM auxiliary cylinder is counter pushes away this assembly afterwards, make to depart between TBM tail shield and assembly, expose one
Bar width is the space of 120mm, and the space exposed is defined as manual work position；
Step 4, construction: employing carries charging basket and paste mortar described in step 2 is transported to the work of people described in step 3
Industry position, then uses spatula that paste mortar is applied in the periphery, front end of assembly, with clog assembly and bean gravel 2 and
Space between country rock 3, clogs width about 200mm, clogs thickness about 200mm, obtains a complete closed-loop 4 after hardening.
During Specific construction, according to method repetitive operation described in the present embodiment, the length direction in tunnel every 45m～
60m makes a closed-loop, till construction is fully completed.
The present embodiment double-shielded TBM closed-loop position relationship in tunnel structure is as it is shown in figure 1, the double shield of the present embodiment
The position relationship of TBM closed-loop and assembly is as shown in Figure 2.From Fig. 1 and Fig. 2, tunnel structure includes section of jurisdiction 1, bean gravel
2, country rock 3 and the made closed-loop 4 of the present embodiment, the made closed-loop of the present embodiment 4 designs in specially-shaped annular, is positioned at annular section of jurisdiction
1 and section of jurisdiction, the end 1-1 periphery, front end of spade tubular assembly formed, and clog in assembly and bean gravel 2 and country rock 3 it
Between space in；It uses in the Cement paste that colloid adjustable solidification agent component is added on cement, Sha Heshui mixes, and is conducive to closing
Ring 4 is combined with section of jurisdiction 1 and country rock 3, simultaneously adjustable setting time (setting time can be controlled between 30min～120min),
Can the contraction of Restraining seal ring 4, ungauged regions after closed-loop 4 calculus, have microdilatancy effect.The present embodiment double-shielded TBM closed-loop
, there is not construction blind area in constructing operation simple, intuitive, the making effect of closed-loop is ideal, and sealing effect is excellent.
According to tests below examination criteria the present embodiment paste mortar is carried out performance detection: (1) " polymer-modified cement
Mortar test code " DL/T5126-2001；(2) " concrete for hydraulic structure testing regulations " SL 352-2006；(3) " concrete is additional
Agent " GB8076-2008；(4) " cement normal consistency water consumption, setting time, the stability method of inspection " (GB/T 1346-
2011)；(5) " Test method for fluidity of cement mortar " (GB/T 2419-2005).The test result of the present embodiment paste mortar
As shown in table 1.
Table 1 embodiment of the present invention 1 paste mortar performance detection data
As shown in Table 1, through the Sampling Intensity detection same period, the present embodiment paste mortar coagulation time can be with site operation
Needing to adjust, Best Times is 45min；And it is satisfied by index request for rupture strength, the comprcssive strength of different larval instar, complete
Full up foot construction needs.
Embodiment 2
The present embodiment double-shielded TBM closed-loop construction method comprises the following steps:
Step one, choose following raw material:
A. cement；
B. colloid adjustable solidification agent；Described colloid adjustable solidification agent is by konjak glucomannan, carbonate, rheological agent, dispersant, morning by force
Agent and water is the most agitated, distill and pulverizing forms, addition is cement quality the 5% of described colloid adjustable solidification agent；
C. sand；The addition of described sand is the 100% of cement quality；
D. water；The addition of described water is cement, colloid adjustable solidification agent and the 30% of sand gross mass；
In the present embodiment, the preparation method of described colloid adjustable solidification agent is: first by konjak glucomannan, carbonate, stream
Become agent, dispersant and early strength agent to add water respectively and fully dissolve, the konjak glucomannan obtained after then fully dissolving
Solution, carbonate solution, rheological agent solution, dispersant solution and early strength agent solution stirring are uniform obtains mixed serum, then by described
Mixed serum carries out distilling successively, pulverize, be spray-dried and cross 500 mesh sieves in 100 DEG C processes, and obtains the colloid that form is powdery
Adjustable solidification agent；Wherein, the weight ratio of described konjak glucomannan, carbonate, rheological agent, dispersant and early strength agent is 40: 25: 10
: 15: 10, in described mixed serum, the mass concentration of solid solute is 25%；
In the present embodiment, described carbonate is sodium carbonate, and described early strength agent is FN type concrete early strength agent, described dispersant
For dispersant NNO, described rheological agent is aluminium magensium silicate class rheological agent；
In the present embodiment, described water is domestic water；
In the present embodiment, described cement is No. 42.5 quick hardening sulphoaluminate cements；
Step 2, prepare paste mortar: colloid adjustable solidification agent selected in step one, cement, sand and water are added successively
In forced mixer, after stirring 1min～2min, obtain paste mortar；
Step 3, determine manual work position: use double-shielded TBM that section of jurisdiction 1 is installed, until the section of jurisdiction installed
The a length of 45m of 1, then installs section of jurisdiction 1-1 at the bottom of a piece again in the end installing section of jurisdiction 1, and being combined into a front end is spade
Tubular assembly, utilize that TBM auxiliary cylinder is counter pushes away this assembly afterwards, make to depart between TBM tail shield and assembly, expose one
Bar width is the space of 120mm, and the space exposed is defined as manual work position；
Step 4, construction: employing carries charging basket and paste mortar described in step 2 is transported to the work of people described in step 3
Industry position, then uses spatula that paste mortar is applied in the periphery, front end of assembly, with clog assembly and bean gravel 2 and
Space between country rock 3, clogs width about 200mm, clogs thickness about 100mm, obtains a complete closed-loop 4 after hardening.
During Specific construction, according to method repetitive operation described in the present embodiment, the length direction in tunnel every 45m～
60m makes a closed-loop, till construction is fully completed.
The present embodiment double-shielded TBM closed-loop position relationship in tunnel structure is as it is shown in figure 1, the double shield of the present embodiment
The position relationship of TBM closed-loop and assembly is as shown in Figure 2.From Fig. 1 and Fig. 2, tunnel structure includes section of jurisdiction 1, bean gravel
2, country rock 3 and the made closed-loop 4 of the present embodiment, the made closed-loop of the present embodiment 4 designs in specially-shaped annular, is positioned at annular section of jurisdiction
1 and section of jurisdiction, the end 1-1 periphery, front end of spade tubular assembly formed, and clog in assembly and bean gravel 2 and country rock 3 it
Between space in；It uses colloid adjustable solidification agent component to be added in Cement paste, and beneficially closed-loop 4 is tied with section of jurisdiction 1 and country rock 3
Close, adjustable setting time (setting time can be controlled between 30min～120min) simultaneously, can the contraction of Restraining seal ring 4,
Ungauged regions after closed-loop 4 calculus, has microdilatancy effect.The present embodiment double-shielded TBM closed-loop constructing operation simple, intuitive, does not deposits
In construction blind area, the making effect of closed-loop is ideal, and sealing effect is excellent.
According to tests below examination criteria the present embodiment paste mortar is carried out performance detection: (1) " polymer-modified cement
Mortar test code " DL/T5126-2001；(2) " concrete for hydraulic structure testing regulations " SL 352-2006；(3) " concrete is additional
Agent " GB8076-2008；(4) " cement normal consistency water consumption, setting time, the stability method of inspection " (GB/T 1346-
2011)；(5) " Test method for fluidity of cement mortar " (GB/T 2419-2005).The test result of the present embodiment paste mortar
As shown in table 2.
Table 2 embodiment of the present invention 2 paste mortar performance detection data
As shown in Table 2, through the Sampling Intensity detection same period, the present embodiment paste mortar coagulation time can be with site operation
Needing to adjust, Best Times is 45min；And it is satisfied by index request for rupture strength, the comprcssive strength of different larval instar, complete
Full up foot construction needs.
Embodiment 3
The present embodiment double-shielded TBM closed-loop construction method comprises the following steps:
Step one, choose following raw material:
A. cement；
B. colloid adjustable solidification agent；Described colloid adjustable solidification agent is by konjak glucomannan, carbonate, rheological agent, dispersant, morning by force
Agent and water is the most agitated, distill and pulverizing forms, addition is cement quality the 3% of described colloid adjustable solidification agent；
C. sand；The addition of described sand is the 50% of cement quality；
D. water；The addition of described water is cement, colloid adjustable solidification agent and the 40% of sand gross mass；
In the present embodiment, the preparation method of described colloid adjustable solidification agent is: first by konjak glucomannan, carbonate, stream
Become agent, dispersant and early strength agent to add water respectively and fully dissolve, the konjak glucomannan obtained after then fully dissolving
Solution, carbonate solution, rheological agent solution, dispersant solution and early strength agent solution stirring are uniform obtains mixed serum, then by described
Mixed serum carries out distilling successively, pulverize, be spray-dried and cross 500 mesh sieves in 100 DEG C processes, and obtains the colloid that form is powdery
Adjustable solidification agent；Wherein, the weight ratio of described konjak glucomannan, carbonate, rheological agent, dispersant and early strength agent is 40: 25: 10
: 15: 10, in described mixed serum, the mass concentration of solid solute is 35%；
In the present embodiment, described carbonate is sodium carbonate, and described early strength agent is FN type concrete early strength agent, described dispersant
For dispersant NNO, described rheological agent is aluminium magensium silicate class rheological agent；
In the present embodiment, described water is domestic water；
In the present embodiment, described cement is No. 42.5 quick hardening sulphoaluminate cements；
Step 2, prepare paste mortar: colloid adjustable solidification agent selected in step one, cement, sand and water are added successively
In forced mixer, after stirring 1min～2min, obtain paste mortar；
Step 3, determine manual work position: use double-shielded TBM that section of jurisdiction 1 is installed, until the section of jurisdiction installed
The a length of 60m of 1, then installs section of jurisdiction 1-1 at the bottom of a piece again in the end installing section of jurisdiction 1, and being combined into a front end is spade
Tubular assembly, utilize that TBM auxiliary cylinder is counter pushes away this assembly afterwards, make to depart between TBM tail shield and assembly, expose one
Bar width is the space of 120mm, and the space exposed is defined as manual work position；
Step 4, construction: employing carries charging basket and paste mortar described in step 2 is transported to the work of people described in step 3
Industry position, then uses spatula that paste mortar is applied in the periphery, front end of assembly, with clog assembly and bean gravel 2 and
Space between country rock 3, clogs width about 200mm, clogs thickness about 300mm, obtains a complete closed-loop 4 after hardening.
During Specific construction, according to method repetitive operation described in the present embodiment, the length direction in tunnel every 45m～
60m makes a closed-loop, till construction is fully completed.
The present embodiment double-shielded TBM closed-loop position relationship in tunnel structure is as it is shown in figure 1, the double shield of the present embodiment
The position relationship of TBM closed-loop and assembly is as shown in Figure 2.From Fig. 1 and Fig. 2, tunnel structure includes section of jurisdiction 1, bean gravel
2, country rock 3 and the made closed-loop 4 of the present embodiment, the made closed-loop of the present embodiment 4 designs in specially-shaped annular, is positioned at annular section of jurisdiction
1 and section of jurisdiction, the end 1-1 periphery, front end of spade tubular assembly formed, and clog in assembly and bean gravel 2 and country rock 3 it
Between space in；It uses colloid adjustable solidification agent component to be added in Cement paste, and beneficially closed-loop 4 is tied with section of jurisdiction 1 and country rock 3
Close, adjustable setting time (setting time can be controlled between 30min～120min) simultaneously, can the contraction of Restraining seal ring 4,
Ungauged regions after closed-loop 4 calculus, has microdilatancy effect.The present embodiment double-shielded TBM closed-loop constructing operation simple, intuitive, does not deposits
In construction blind area, the making effect of closed-loop is ideal, and sealing effect is excellent.
According to tests below examination criteria the present embodiment paste mortar is carried out performance detection: (1) " polymer-modified cement
Mortar test code " DL/T5126-2001；(2) " concrete for hydraulic structure testing regulations " SL 352-2006；(3) " concrete is additional
Agent " GB8076-2008；(4) " cement normal consistency water consumption, setting time, the stability method of inspection " (GB/T 1346-
2011)；(5) " Test method for fluidity of cement mortar " (GB/T 2419-2005).The test result of the present embodiment paste mortar
As shown in table 3.
Table 3 embodiment of the present invention 3 paste mortar performance detection data
As shown in Table 3, through the Sampling Intensity detection same period, the present embodiment paste mortar coagulation time can be with site operation
Needing to adjust, Best Times is 45min；And it is satisfied by index request for rupture strength, the comprcssive strength of different larval instar, complete
Full up foot construction needs.
The above, be only presently preferred embodiments of the present invention, not impose any restrictions the present invention.Every according to invention skill
Any simple modification, change and the equivalence change that above example is made by art essence, all still falls within technical solution of the present invention
Protection domain in.
Claims (5)
1. a double-shielded TBM closed-loop construction method, it is characterised in that the method comprises the following steps:
Step one, choose following raw material:
A. cement；
B. colloid adjustable solidification agent；Described colloid adjustable solidification agent by konjak glucomannan, carbonate, rheological agent, dispersant, early strength agent and
Water is the most agitated, distill, pulverize, dried and screened are made, described colloid adjustable solidification agent addition is cement quality 3%～
5%；
C. sand；The addition of described sand is the 50%～100% of cement quality；
D. water；The addition of described water is cement, colloid adjustable solidification agent and the 30% of sand gross mass～40%；
Step 2, prepare paste mortar: cement selected in step one, colloid adjustable solidification agent, Sha Heshui are joined by force successively
In standard blender, after stirring 1min～2min, obtain paste mortar；
Step 3, determine manual work position: use double-shielded TBM that section of jurisdiction (1) is installed, until the section of jurisdiction installed
(1) a length of 45m～60m, then installs section of jurisdiction (1-1) at the bottom of a piece again in the end installing section of jurisdiction (1), is combined into one
Front end is the tubular assembly of spade, utilizes that TBM auxiliary cylinder is counter pushes away this assembly afterwards, makes between TBM tail shield and assembly
Depart from, expose the space that width is 100mm～150mm, the space exposed is defined as manual work position；
Step 4, construction: employing carries charging basket and paste mortar described in step 2 is transported to manual work portion described in step 3
Position, then uses spatula that paste mortar is applied in the periphery, front end of assembly, to clog assembly and bean gravel (2) and to enclose
Space between rock (3), obtains a closed-loop (4) after hardening.
Double-shielded TBM closed-loop construction method the most according to claim 1, it is characterised in that colloid described in step one
The preparation method of adjustable solidification agent is: first konjak glucomannan, carbonate, rheological agent, dispersant and early strength agent are added water respectively
Fully dissolve, then will fully dissolve after obtain konjak glucomannan solution, carbonate solution, rheological agent solution,
Dispersant solution and early strength agent solution stirring uniformly obtain mixed serum, then carry out described mixed serum successively distilling, pulverize,
It is spray-dried and process of sieving, obtains colloid adjustable solidification agent；The form of described colloid adjustable solidification agent is powdery, and described konjac mannan gathers
The weight ratio of sugar, carbonate, rheological agent, dispersant and early strength agent is 40: 25: 10: 15: 10, and in described mixed serum, solid is molten
The mass concentration of matter is 25%～35%.
Double-shielded TBM closed-loop construction method the most according to claim 2, it is characterised in that described carbonate is carbonic acid
Sodium, described early strength agent is FN type concrete early strength agent, and described dispersant is dispersant NNO, and described rheological agent is aluminium magensium silicate
Class rheological agent.
Double-shielded TBM closed-loop construction method the most according to claim 1 and 2, it is characterised in that water described in step one
For domestic water.
Double-shielded TBM closed-loop construction method the most according to claim 1 and 2, it is characterised in that water described in step one
Mud is No. 42.5 quick hardening sulphoaluminate cements.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441470A (en) * | 2018-12-25 | 2019-03-08 | 中国电建集团成都勘测设计研究院有限公司 | Double-shielded TBM tunnels tunnel surrounding rebound value test method |
| CN110005432A (en) * | 2019-04-18 | 2019-07-12 | 西南交通大学 | Double-shielded TBM development machine passes through the synchronous grouting construction method of fractured weak zone |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353372A (en) * | 2003-05-30 | 2004-12-16 | Nippon Gijutsu Kensetsu Kk | Renewal construction method for old buried pipe |
| JP2005120349A (en) * | 2003-09-16 | 2005-05-12 | Raito Kogyo Co Ltd | Material for earth and sand structure, surface protecting construction method for inclined face, lining face, and tunnel lining face using the same, and slope protecting construction method |
| CN102562146A (en) * | 2012-03-07 | 2012-07-11 | 深圳市市政工程总公司 | Construction gap filling method and device for shield through air pushing section |
| CN103510964A (en) * | 2013-07-31 | 2014-01-15 | 中铁隧道集团有限公司 | Method for performing backfill grouting on pea gravel by adoption of shield type TBM in construction process |
| CN105649650A (en) * | 2014-12-03 | 2016-06-08 | 中铁十八局集团有限公司 | Back pea gravel blow filling grouting construction method for single-shield hard rock roadheader after installing TBM pipe piece |
| CN105804770A (en) * | 2016-04-11 | 2016-07-27 | 刘文涛 | Method for backfilling of tunnel construction through TBM method and equipment for method |
-
2016
- 2016-08-26 CN CN201610748716.9A patent/CN106285697B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353372A (en) * | 2003-05-30 | 2004-12-16 | Nippon Gijutsu Kensetsu Kk | Renewal construction method for old buried pipe |
| JP2005120349A (en) * | 2003-09-16 | 2005-05-12 | Raito Kogyo Co Ltd | Material for earth and sand structure, surface protecting construction method for inclined face, lining face, and tunnel lining face using the same, and slope protecting construction method |
| CN102562146A (en) * | 2012-03-07 | 2012-07-11 | 深圳市市政工程总公司 | Construction gap filling method and device for shield through air pushing section |
| CN103510964A (en) * | 2013-07-31 | 2014-01-15 | 中铁隧道集团有限公司 | Method for performing backfill grouting on pea gravel by adoption of shield type TBM in construction process |
| CN105649650A (en) * | 2014-12-03 | 2016-06-08 | 中铁十八局集团有限公司 | Back pea gravel blow filling grouting construction method for single-shield hard rock roadheader after installing TBM pipe piece |
| CN105804770A (en) * | 2016-04-11 | 2016-07-27 | 刘文涛 | Method for backfilling of tunnel construction through TBM method and equipment for method |
Non-Patent Citations (3)
| Title |
|---|
| 任成国: "长沙—株洲—湘潭城际铁路湘江隧道开滨盾构区间", 《隧道建设》 * |
| 周庆武: "斜井TBM工法分段注浆材料的选择", 《煤炭工程》 * |
| 王庆: "达坂隧洞双护盾TBM衬砌与围岩容固施工工法", 《山西建筑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441470A (en) * | 2018-12-25 | 2019-03-08 | 中国电建集团成都勘测设计研究院有限公司 | Double-shielded TBM tunnels tunnel surrounding rebound value test method |
| CN110005432A (en) * | 2019-04-18 | 2019-07-12 | 西南交通大学 | Double-shielded TBM development machine passes through the synchronous grouting construction method of fractured weak zone |
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