CN106089245A - A kind of delay grouting method after single shield TBM wall - Google Patents
A kind of delay grouting method after single shield TBM wall Download PDFInfo
- Publication number
- CN106089245A CN106089245A CN201610475430.8A CN201610475430A CN106089245A CN 106089245 A CN106089245 A CN 106089245A CN 201610475430 A CN201610475430 A CN 201610475430A CN 106089245 A CN106089245 A CN 106089245A
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- Prior art keywords
- ring
- slip casting
- point
- grouting
- serosity
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- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000007569 slipcasting Methods 0.000 claims abstract description 53
- 239000011083 cement mortar Substances 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 11
- 238000002156 mixing Methods 0.000 claims description 3
- 230000011218 segmentation Effects 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 abstract description 24
- 244000046052 Phaseolus vulgaris Species 0.000 abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007423 decrease Effects 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 10
- 239000011440 grout Substances 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A kind of delay grouting method after single shield TBM wall, it is characterized in that step is as follows: starting before slip casting, check grouting equipment whether normal operation, check that Grouting Pipe is the most unobstructed, and whether hole for hoist port lid exists and does not screws on or do not tighten, it is to avoid during slip casting, cement mortar flows out from hole for hoist；Slip casting point is selected at distance face 90m；The method replacing, complementing one another about slip casting employing, grouting pressure controls 0.2～0.3MPa；Pouring quality timely cleaning equipment pipeline is checked after having irrigated.The present invention utilizes the feature that the setting time of serosity is short, is grouped slip casting, and grouting behind shaft or drift lining triangle basin is overlapped mutually, reach the effect that grouting behind shaft or drift lining is closely knit, finally make bean gravel, serosity form an entirety with section of jurisdiction, reduce molding section of jurisdiction faulting of slab ends, decrease water seepage of tunnel rate.
Description
Technical field
Along with complete-section tunnel boring machine (TBM) driving speed and the raising of pipe-plate lining effect, it is widely used in tunnel
In road construction, driving, prefabricated pipe section lining cutting, grouting be-hind segment are the major control links in construction, the structure of prefabricated pipe section
Size, the concrete strength of prefabricated pipe section, the quality of grouting be-hind segment are to ensure that the basic of lining quality.
Background technology
Along with constantly bringing forth new ideas of single shield TBM technology, single shield TBM is increasingly widely used in domestic subway field.
The important procedure that bean gravel hydraulic reclamation slurry injection technique is constructed as rock matter bottom list shield TBM plays an important role.But due to
Single shield TBM not pressurize in tunneling process, carries out synchronous grouting after conventional hydraulic reclamation bean gravel in time, and one ensures with this
Filling to bean gravel gap.But problems are present in synchronous grouting, owing to synchronous grouting position is positioned at outside shield tail, warp
Often result in shield tail spillage and serosity and flow into cutterhead, contaminated equipment, be difficult to clear up, waste serosity while, cause grouting behind shaft or drift lining
Uneven, after forming wall, cavity causes Tunnel Water Leakage；Additionally serosity inflow cutterhead causes cutterhead to be shut, and has a strong impact on equipment fortune
OK.Meanwhile, serosity can flow into the gap of shield body and rock stratum by the space of peripheral rock, ultimately results in card shield, it is impossible to continue to execute
Work.By to the research of original grouting behind shaft or drift lining method and improvement, existing invention one postpones slip casting side after single shield TBM wall
Method, improves grouting behind shaft or drift lining condition of construction with this, it is to avoid shield tail spillage, return corresponding problem such as slurry card shield etc., improves grouting behind shaft or drift lining quality,
Promote work efficiency.
Summary of the invention
A kind of delay grouting method after single shield TBM wall, it is characterised in that one is prolonged after single shield TBM wall
Late grouting method, it is characterised in that by postponing slip casting after the wall of section of jurisdiction and left and right replaces, the side of the slip casting that complements one another, is grouped
Method, reaches to fill bean gravel space, closes the purpose of section of jurisdiction.After the section of jurisdiction abjection tail shield once installed, implement hydraulic reclamation the most immediately
Bean gravel, after bean gravel hydraulic reclamation is full, it still suffers from substantial amounts of space, but owing to the existence of bean gravel is as skeleton, a stay tube
Sheet, grouting behind shaft or drift lining can postpone to carry out.By postponing slip casting, slip casting position is arranged at distance face 90m, prevents serosity
Flow into shield tail, flow into cutterhead and return the problems such as slurry card shield.Slip casting is replaced, it is achieved serosity is complementary, and slip casting is uniform by left and right.Profit
By the short feature of the setting time of serosity, being grouped slip casting, grouting behind shaft or drift lining triangle basin is overlapped mutually, and reaches grouting behind shaft or drift lining closely knit
Effect, finally make bean gravel, serosity and section of jurisdiction form an entirety.
A kind of delay grouting method after single shield TBM wall, it is characterised in that step is as follows:
(1), starting before slip casting, check grouting equipment whether normal operation, check that Grouting Pipe is the most unobstructed, and lifting
Whether hole port lid exists is not screwed on or does not tightens, it is to avoid during slip casting, cement mortar flows out from hole for hoist；
(2), serosity is transported to chassis by electromobile from well head blending station, then is carried by chassis and take out stock pump by serosity suction platform
Car mortar jar；
(3), slip casting point is selected at distance face 90m；
(4), slip casting use about alternately, the method that complements one another, every 6 endless tube sheets are a circulation, and slip casting position all exists
Top, section of jurisdiction, every ring selects a position slip casting in 1 point, 11 directions, and left and right is the most afterwards；Grouting sequence is first
Ring 1 point, the second ring 11 point, every 2 ring note five rings 1 points, the 6th ring 11 point, the most again note the 3rd ring 1 point, Fourth Ring 11 point；Or
Person is followed successively by the first ring 11 point, the second ring 1 point, every 2 ring note five rings 11 points, the 6th ring 1 point, the most again note the 3rd ring 11 point,
Fourth Ring 1 point；Above-mentioned 1 or 11 all referring to according to clock scale segmentation place position；Grouting pressure controls 0.2
～0.3MPa；
(5) pouring quality timely cleaning equipment pipeline are checked after, having irrigated.
Further, every ring needs slip casting 4m3, serosity per car carries 4m3。
By disturbance or by the kata-rocks of failure by shear around development machine (TBM) Stratum Loss that causes of construction and TBM tunnel
Secondary consolidation and the infiltration of subsoil water, all can cause the stresses re-distribution of country rock again.Simultaneously in order to prevent the deformation of Wall Rock of Tunnel,
The load-carrying ring making section of jurisdiction and formed entirety by excavation country rock, reduces section of jurisdiction deformation under deadweight and interior load and between section of jurisdiction
Changing of the relative positions unstability, need to carry out bean gravel hydraulic reclamation and section of jurisdiction in time to the annular space between the tunnel and the section of jurisdiction external diameter that excavated
Grouting behind shaft or drift lining.The method adheres to the principle of " left and right replaces, complements one another, is grouped slip casting ", accomplishes ring ring slip casting so that section of jurisdiction with
The cavity that country rock is formed is the most closely knit completely.
Postponing grouting method after this wall used, relative TBM construction is with the obvious advantage, simple to operate, can reach carrying
The intensity of pressure from surrounding rock, after pipe sheet assembling completes, carries out section of jurisdiction loopful bean gravel and uniformly backfills, and enter the section of jurisdiction backfilled
Row grouting behind shaft or drift lining, reduces molding section of jurisdiction faulting of slab ends, decreases water seepage of tunnel rate, achieve Expected Results.Slip casting is postponed after application wall,
Condensing bean gravel, make section of jurisdiction be stablized, transmission rock pressure or internal water pressure, make section of jurisdiction, the bean gravel of condensation and enclose simultaneously
Rock forms closely knit entirety, here it is postpone grouting method after wall.
Accompanying drawing explanation
Fig. 1--slip casting position view
Fig. 2--grouting sequence floor map,
Fig. 3--grouting sequence elevational schematic view,
Fig. 4--grouting sequence schematic perspective view.
Detailed description of the invention
This detailed description of the invention employing technical scheme: its operating process:
1, starting before slip casting, check grouting equipment whether normal operation, it is to avoid construction period because of downtime, affect into
Degree.Check that Grouting Pipe is the most unobstructed, and whether hole for hoist port lid exist and do not screw on or do not tighten, it is to avoid during slip casting cement mortar from
Hole for hoist flows out.Admittedly effect is coagulated, avoidance breakout of should trying one's best in construction, or the event that the waiting time is long due to serosity.Respectively
Smoothness is wanted in the linking of inter process, prevents grout cures damage equipment.
2, according to calculating, every ring needs slip casting 4m3, serosity per car carries 4m3Cement paste, by electromobile from well head blending station
It is transported at 1# chassis, then is carried by chassis and take out stock pump by serosity suction chassis mortar jar.
3, using open type boring mode because of single shield TBM, cutterhead front portion does not has pressure, for preventing from returning showing of slurry card shield
As, slip casting point is selected at 90m at face 90m.Be illustrated in figure 1 slip casting position view, sequence number be 1. face,
Sequence number is 2. for slip casting position.
4, the method replacing, complementing one another about slip casting employing, the every ring of the method is reserved an injected hole and is facilitated secondary to mend
Slurry, also ensure that slip casting maximizes simultaneously.Every 6 endless tube sheets are a circulation, slip casting position all on top, section of jurisdiction, every ring select 1,
A position slip casting in 11 directions, left and right is the most afterwards.Grouting sequence is the first ring 1 point (or 11 points), the second ring
11 points (or 1 point), every two ring note five rings 1 point (or 11 points), the 6th ring 11 point (1 point), note the 3rd ring 1 point (or 11 the most again
Point), Fourth Ring 11 point (or 1 point).It is illustrated in figure 2 floor map, is illustrated in figure 3 elevational schematic view, be illustrated in figure 4
Schematic perspective view, in figure, sequence number represents grouting sequence.
5, slip casting to be followed up in time, prevents section of jurisdiction from forming big faulting of slab ends because rubble hydraulic reclamation is the fullest, affects construction quality.
Wanting close observation to alter slurry situation during slip casting, as found, hole for hoist, section of jurisdiction circumferential weld and longitudinal joint, bolt hole have water
When slurry liquid spills phenomenon, take measures in time to block.To the flushing of serosity Polluted area water, (electrical equipment is smeared with dry
Cloth is cleared up), prevent serosity from polluting chassis, grouting pressure is normally controlled in 0.2～0.3MPa.
6, check pouring quality timely cleaning equipment pipeline after having irrigated, prevent grout cures damage equipment, plugging,
Prepare next ring slip casting.
Technical advantage
Grouting method advantage is postponed after wall
(1) the method adheres to the principle of " tunnel a ring and be necessary for hydraulic reclamation slip casting one ring ", greatly reduces section of jurisdiction depression
Faulting of slab ends is made to reduce.Return slurry, card shield common fault is well solved.After pipe sheet assembling, first section of jurisdiction is held by backfill bean gravel,
After carry out grout pouring.Now space, behind, section of jurisdiction is by bean gravel pack, and required serosity is little；Colleague's shield tail stops pulpboard also
Play only slurry effect, serosity can be stoped to flow to outside shield, reduce the generation returning slurry solidification card shield phenomenon.
(2) duct piece float upward is overcome.The buoyancy produced in bottom range is conducted oneself with dignity much smaller than section of jurisdiction, not enough so that on section of jurisdiction
Floating.
(3) postpone slip casting shrinkage factor after wall to be obviously reduced.Owing to bean gravel does aggregate, cement grout is filling bean gravel
Gap, consolidation bean gravel, form shrink space, beneficially sealing the most hardly behind in section of jurisdiction.
(4) postpone after wall after slip casting makes section of jurisdiction wall because the bean the fullest problem of gravel hydraulic reclamation is addressed, make section of jurisdiction and country rock
Between cavity form uniform closed chamber, after grouting formed bean gravel concrete, beneficially tunnel total quality promote.
(5) compared with synchronizing loopful cementing mortar technique, postpone slip casting after wall and greatly reduce plugging rate, and technique letter
Single.
(6) stablizing of the full beneficially section of jurisdiction of slip casting is postponed after wall.Section of jurisdiction is held by bean gravel, forms rigid support, no
Section of jurisdiction can be caused to sink, decrease section of jurisdiction faulting of slab ends, and then prevent drainage.
(7) accelerate driving speed, improve construction safety.Postpone slip casting ratio after hydraulic reclamation bean gravel and wall and synchronize loopful note
Cement mortar is simple to operate, and cementing mortar must control injection speed, in order to avoid section of jurisdiction pressurized sinks, needs to control driving
Speed.And postpone slip casting after bean gravel hydraulic reclamation and wall and need not control operating speed, decrease circulation time, accelerate driving speed
Degree.
Chongqing region uses in tunneling boring hard rock mole (single shield TBM) work progress, and summary and induction draws this kind of list
Shield TBM wall thickness postpones grouting method, uses detections of radar actual hydraulic reclamation effect, and testing result shows all slip casting of more than 95% ring
Full, effectively control ring plate floating, the sinkage often occurred in TBM construction, without faulting of slab ends after pipe sheet assembling, outward appearance smoothes out
Greatly improve cavitation quality, there is good economy, the suitability.After bean gravel hydraulic reclamation and wall postpone slip casting through coring,
Mud jacking checks, normal hole section is the most qualified has reached design requirement.
Claims (2)
1. one kind postpones grouting method after single shield TBM wall, it is characterised in that step is as follows:
(1), starting before slip casting, check grouting equipment whether normal operation, check that Grouting Pipe is the most unobstructed, and hole for hoist hole
Whether lid exists is not screwed on or does not tightens, it is to avoid during slip casting, cement mortar flows out from hole for hoist；
(2), serosity is transported to chassis by electromobile from well head blending station, then is carried by chassis and take out stock pump by serosity suction chassis sand
Slurry tank；
(3), slip casting point is selected at distance face 90m；
(4), slip casting use about alternately, the method that complements one another, every 6 endless tube sheets are a circulation, and slip casting position is all in section of jurisdiction
Top, every ring selects a position slip casting in 1 point, 11 directions, and left and right is the most afterwards；Grouting sequence is the first ring 1
Point, the second ring 11 point, every 2 ring note five rings 1 points, the 6th ring 11 point, the most again note the 3rd ring 1 point, Fourth Ring 11 point；Or
Be followed successively by the first ring 11 point, the second ring 1 point, every 2 ring note five rings 11 points, the 6th ring 1 point, the most again note the 3rd ring 11 point,
Fourth Ring 1 point；Above-mentioned 1 or 11 all referring to according to clock scale segmentation place position；Grouting pressure control 0.2～
0.3MPa；
(5) pouring quality timely cleaning equipment pipeline are checked after, having irrigated.
Method the most according to claim 1, it is characterised in that: every ring needs slip casting 4m3, serosity per car carries 4m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610475430.8A CN106089245B (en) | 2016-06-25 | 2016-06-25 | One kind postpones grouting method after being used for single shield TBM walls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610475430.8A CN106089245B (en) | 2016-06-25 | 2016-06-25 | One kind postpones grouting method after being used for single shield TBM walls |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106089245A true CN106089245A (en) | 2016-11-09 |
| CN106089245B CN106089245B (en) | 2018-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610475430.8A Expired - Fee Related CN106089245B (en) | 2016-06-25 | 2016-06-25 | One kind postpones grouting method after being used for single shield TBM walls |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939420A (en) * | 2017-08-21 | 2018-04-20 | 中铁六局集团有限公司 | The construction method filled after two backing of bored tunnel assembled |
| CN110454194A (en) * | 2019-08-06 | 2019-11-15 | 中广核工程有限公司 | Shield-tunneling construction secondary grouting method |
| CN113217037A (en) * | 2021-06-25 | 2021-08-06 | 中铁二局集团有限公司 | Backfill system and backfill method for single shield TBM or behind shield segment wall |
| CN115012998A (en) * | 2022-06-24 | 2022-09-06 | 吉林大学 | Post-grouting method capable of realizing real-time grout supplement |
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| CN1362573A (en) * | 2002-01-26 | 2002-08-07 | 刘丽萍 | Construction mode with full cross-section tunneller |
| JP3753729B1 (en) * | 2005-01-07 | 2006-03-08 | 株式会社ケー・エフ・シー | Tunnel waterproof structure |
| CN101614124A (en) * | 2008-06-27 | 2009-12-30 | 中铁隧道集团有限公司 | Open type hard rock mole driving and secondary lining method for synchronously constructing |
| 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 |
-
2016
- 2016-06-25 CN CN201610475430.8A patent/CN106089245B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1362573A (en) * | 2002-01-26 | 2002-08-07 | 刘丽萍 | Construction mode with full cross-section tunneller |
| JP3753729B1 (en) * | 2005-01-07 | 2006-03-08 | 株式会社ケー・エフ・シー | Tunnel waterproof structure |
| CN101614124A (en) * | 2008-06-27 | 2009-12-30 | 中铁隧道集团有限公司 | Open type hard rock mole driving and secondary lining method for synchronously constructing |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939420A (en) * | 2017-08-21 | 2018-04-20 | 中铁六局集团有限公司 | The construction method filled after two backing of bored tunnel assembled |
| CN110454194A (en) * | 2019-08-06 | 2019-11-15 | 中广核工程有限公司 | Shield-tunneling construction secondary grouting method |
| CN113217037A (en) * | 2021-06-25 | 2021-08-06 | 中铁二局集团有限公司 | Backfill system and backfill method for single shield TBM or behind shield segment wall |
| CN115012998A (en) * | 2022-06-24 | 2022-09-06 | 吉林大学 | Post-grouting method capable of realizing real-time grout supplement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106089245B (en) | 2018-02-23 |
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Granted publication date: 20180223 Termination date: 20180625 |