CN108872297A - A kind of condensation of grouting at the tail of the shield machine slurries and duct piece float upward process model experimental rig - Google Patents
A kind of condensation of grouting at the tail of the shield machine slurries and duct piece float upward process model experimental rig Download PDFInfo
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- CN108872297A CN108872297A CN201810982699.4A CN201810982699A CN108872297A CN 108872297 A CN108872297 A CN 108872297A CN 201810982699 A CN201810982699 A CN 201810982699A CN 108872297 A CN108872297 A CN 108872297A
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- load plate
- casing
- grouting
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000009833 condensation Methods 0.000 title claims abstract description 17
- 230000005494 condensation Effects 0.000 title claims abstract description 17
- 239000002002 slurry Substances 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 239000004927 clay Substances 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims description 29
- 230000006835 compression Effects 0.000 claims description 26
- 238000007906 compression Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 230000005641 tunneling Effects 0.000 abstract 1
- 238000007569 slipcasting Methods 0.000 description 14
- 238000004088 simulation Methods 0.000 description 11
- 238000007596 consolidation process Methods 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
Abstract
The present invention relates to a kind of condensation of grouting at the tail of the shield machine slurries and duct piece float upward process model experimental rigs, including for holding the model casing for filling out model clay, it is characterised in that：The top releasable connection of the model casing has steel pipe sheet model, the bottom end of model casing is provided with load plate component, load plate component includes load plate, the spring connecting with load plate and the reaction beam being fixedly connected with spring, load plate, spring and reaction beam are sequentially arranged up and down, for the upside plate face of load plate for contacting with model clay, model test apparatus further includes for applying stressed pressure exerting arrangement to the reaction beam.The present invention solves the problems, such as that the prior art cannot simulate in shield machine tunneling process synchronous grouting after section of jurisdiction is detached from shield tail and lead to duct piece float upward.
Description
Technical field
The present invention relates to a kind of condensation of grouting at the tail of the shield machine slurries and duct piece float upward process model experimental rigs.
Background technique
In recent years, with the continuous development of city underground cause, subway work technology is also completed constantly.However,
Research in terms of the influence of corresponding shield grouting rear slurry condensation process and different geological conditions to slurries setting strength is but compared
It is less.The Chinese patent of Publication No. CN205643289U discloses " a kind of shield tunnel synchronous grouting simulation test system ",
The synchronous grouting simulation test system includes the model casing for filling model clay, and the bottom of model casing, which is provided with, can slide back and forth
Drawing device, the Grouting Pipe being connected to inside model casing is equipped in drawing device, synchronous grouting simulation test system further includes
Reaction frame is provided with jack on reaction frame.
When test, model clay is filled into model casing, pre-buried good strain gauge, strain transducer and displacement sensor,
Drawing device slip casting into model casing while pull, jack simulated formation pressure are synchronous to simulate one shield tail of shield machine
The working condition of slip casting.Existing this simulation experiment system has the following problems：In slip casting condensation process on caused section of jurisdiction
Floating, subsidence problems cannot be simulated effectively；In addition, the soil in true stratum is that have certain compactness, and the prior art
In simulation experiment system cannot achieve the adjustment of compactness.
Summary of the invention
The purpose of the present invention is to provide a kind of grouting at the tail of the shield machine slurries condensation and duct piece float upward process model experimental rig, with
Solve the problems, such as that the prior art cannot simulate duct piece float upward in slip casting condensation process.
In order to solve the above technical problems, technical scheme is as follows：
A kind of condensation of grouting at the tail of the shield machine slurries and duct piece float upward process model experimental rig, including for holding the model for filling out model clay
Case, the top releasable connection of the model casing have steel pipe sheet model, and the bottom end of model casing is provided with load plate component, load board group
Part includes load plate, the spring connecting with load plate and the reaction beam being fixedly connected with spring, on load plate, spring and reaction beam
Lower sequence arrangement, for the upside plate face of load plate for contacting with model clay, model test apparatus further includes for the counter-force
Beam applies stressed pressure exerting arrangement.
Water filling port and water outlet are provided on the side wall of the model casing.
Flow control valve is connected on the water filling port.
The steel pipe sheet model is arc section of jurisdiction of the lower circumferential surface convex in the model casing.
Grouting port is provided on the model casing side wall and steel pipe sheet model.
Model test apparatus further includes the soil solidifying compression plate that can be moved up and down in model casing and the driving soil body
The system for compacting that consolidation compression plate presses to model clay consolidates and is provided with permeable hole in compression plate.
The soil body unity compression plate is the equal proportion convex structure being arranged in parallel with steel pipe sheet model.
The threaded hole that axis vertically extends is provided in the middle part of steel pipe sheet model, model test apparatus further includes using
In being threadedly coupled with the threaded hole with the pushing tow bolt of soil solidifying compression plate described in downward pushing tow.
Beneficial effects of the present invention are：In grouting test, pressure exerting arrangement passes through model clay of the load plate into model casing
Apply pressure, to simulate the soil pressure of different soil depth, in slip casting condensation process, float or settle if there is soil layer,
The amplitude of native ground settlement can be displayed by the floating of the opposite reaction beam of load plate, to realize that steel pipe sheet model floats
Simulation.
Further, by water filling water pressure adjusting and opening and closing come the groundwater condition in simulated formation.
Further, before carrying out grouting test, system for compacting first passes through consolidation compression plate and presses to model clay, so that
Model clay obtains the compactness of predetermined soil layer, to simulate more true ground environment.
Further, consolidation compression plate is and model tile equal proportion arc structure disposed in parallel, in this way process consolidation
The slip casting region of arc is formed between the model clay and model tile of compression plate compacting, it is consistent with true slip casting region shape,
Simulation test is more nearly real working condition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one embodiment of the present of invention；
Fig. 2 is the side view of Fig. 1.
Specific embodiment
The embodiment of a kind of condensation of grouting at the tail of the shield machine slurries and duct piece float upward process model experimental rig is as shown in Figure 1 and 2：Packet
It includes inner cavity and is fixed on model casing support frame 8 for filling the model casing 7 of model clay, model casing 7 by bolt.Model casing it is interior
Double-deck non-skid film is posted on wall, non-skid film is made of tetrafluoro dragon film in the present embodiment, is filled with stone between the tetrafluoro dragon film of two sides
Ink, to reduce the frictional force between two layers of tetrafluoro dragon film, the top of model casing is connected with steel pipe sheet mould by removable fixed structure
Type 3, removable fixed structure include the clamping screw that axis vertically extends and the model casing screw thread being set on model casing
Hole, steel pipe sheet model 3 are fixed on the upper end of model casing 7, steel pipe sheet mould by the clamping screw being threaded onto model casing threaded hole
The lower circumferential surface convex of type 3 is in model casing.The sidewall upper of steel pipe sheet model and model casing is provided with grouting port 1, steel pipe sheet
The axis of grouting port on model vertically extends, and is provided with what axis vertically extended in the middle part of steel pipe sheet model
Section of jurisdiction threaded hole 15, section of jurisdiction threaded hole 15 constitute the grouting port.The bottom of model casing is provided with load plate component, loads board group
Part includes reaction beam 11 and floats by spring 9 to be set to the load plate 10 of the upside of reaction beam 11, load plate 10 can on float downward
Dynamic, the upper end of spring 9 is fixedly connected with load plate, and the lower end of spring 9 is fixedly connected with reaction beam, the upside plate face of load plate 10
For contacting power transmission with model clay, model test apparatus further includes for applying stressed pressure exerting arrangement to reaction beam（In figure not
It shows）, pressure exerting arrangement is hydraulic cylinder in the present embodiment.Model test apparatus further include can in model casing up and down guiding movement
The system for compacting that soil solidifying compression plate 4 and driving soil solidifying compression plate press to model clay（It is not shown in the figure）, compacting machine
Structure includes the pushing tow bolt being threadedly coupled with section of jurisdiction threaded hole 15, by the lower end of pushing tow bolt to soil solidifying compression plate top
Push away, soil solidifying compression plate can downward compacted fill when not in use, can will be pushed up with simulating the secret room degree of true soil layer
It pushes away bolt to dismantle, section of jurisdiction threaded hole is for realizing the lifting to steel pipe sheet model.
Permeable hole 2 is provided in soil solidifying compression plate 4.It is additionally provided on the side wall of model casing spaced apart up and down
Water filling port 5 and water outlet 6, water filling port and water outlet can be blocked by block head, be additionally provided with conducting wire on the side wall of model casing
Mouthful.An at least side box wall for model casing is made of clear material, to facilitate observation experiment process, on the transparent side wall of model casing
The scale value arranged along the vertical direction can also be set, to facilitate the float value of observation load plate.
When test, model clay 12 is placed in model casing, the sensors such as pre-buried pressure cell in model clay, the route of sensor
It is drawn through guidewire port, first unity compression plate, is placed in the upside of model clay, by system for compacting to group by uneasiness steel loading section of jurisdiction model
Compression plate pressure is tied, model clay is compacted, extra moisture can be overflowed through permeable mouth in model clay, simulate true soil layer with this
Compactness, by water filling port pressure and opening and closing come the groundwater condition in simulated formation.Then unity compression plate is taken out, passes through
Steel pipe sheet model is fixed on the upper end of model casing by bolt, by the grouting port on model casing side wall and steel pipe sheet model to steel pipe
Slip casting between piece model and model clay, pressure exerting arrangement press to model clay by load plate, to simulate the ground lamination of Different Strata
Power controls the process of the pressure simulation duct piece float upward of load plate when slip casting is in process of setting, until experiment is completed, takes out
The slurries of condensation carry out slurry intensity measurement.
The present invention can be by the slurries condensation process that configures different model soil samples to simulate in Different Strata, and the present invention is also
Different slurries can be simulated by configuring different slurries to the slurries condensation process on same stratum；By adjusting load plate component
The soil pressure of different soil depth is simulated to the pressure of model clay；It is simulated by adjusting water injection pressure and the opening and closing of water filling port
Groundwater condition in stratum；The influence that different grouting pressures condense slurries is simulated by adjusting grouting port pressure.This hair
It is bright that there is good general utility functions, suitable for the slip casting condensation process simulation to different situations, convenient for providing ginseng to work progress
Number accelerates construction progress, and ensures construction safety.The model test apparatus can simulate shield grouting under any geological conditions and starch
Liquid condensation process and floating-upward process；Pressure exerting arrangement can effectively simulate the weight stress of duct piece float upward process.Experiment every time
Energy recovery section soil body material is completed, it is economic and environment-friendly；This simulation test device, which need to only control pressure exerting arrangement, can complete experiment, easily
In operation, accuracy decline caused by accidental error in experimentation is reduced.Section of jurisdiction spiral shell in the present invention in the middle part of steel pipe sheet model
Pit can be used for slip casting, lifting and the load to unity compression plate, and the space between steel pipe sheet model and the soil body is for simulating
Shield tail gap, shield tail gap is filled in slip casting in test, simulates synchronous grouting process in Practical Project, by consolidation compression plate to soil
The simulation to soil sample compactness is completed in the compression of sample, and before slip casting, consolidation compression plate is taken out from model casing, reaction beam
Reaction force is provided for spring, and can be used as the support frame of model casing, model test apparatus further includes Grouting Pipe and slip casting machine, to
Water filling port water filling or draining, can arbitrarily set the water level in soil.Model test apparatus further includes the discharge outlet with lower position
Connected water-level observation pipe, the variation for observed stage.
In other embodiments of the invention, section of jurisdiction fixed structure, which can also be that buckle etc. is other, can be realized steel pipe sheet mould
The releasable connection structure of type and model casing releasable connection；Certainly consolidation compression plate can not also be set, and steel pipe sheet model can be at this time
Non-disconnectable is fixed on model casing, model clay can be inserted into model casing from the side of model casing.
Claims (9)
1. a kind of grouting at the tail of the shield machine slurries condensation and duct piece float upward process model experimental rig, including for holding the mould for filling out model clay
Molding box, it is characterised in that：The top releasable connection of the model casing has steel pipe sheet model, and the bottom end of model casing is provided with load plate
Component, load plate component include load plate, the spring connecting with load plate and the reaction beam being fixedly connected with spring, load plate,
Spring and reaction beam sequentially arrange that for contacting with model clay, model test apparatus further includes the upside plate face of load plate up and down
For applying stressed pressure exerting arrangement to the reaction beam.
2. model test apparatus according to claim 1, it is characterised in that：Water filling is provided on the side wall of the model casing
Mouth and water outlet.
3. model test apparatus according to claim 2, it is characterised in that：Flow adjusting is connected on the water filling port
Valve.
4. model test apparatus according to claim 1, it is characterised in that：The steel pipe sheet model be lower circumferential surface convex in
Arc section of jurisdiction in the model casing.
5. model test apparatus according to claim 1, it is characterised in that：On the model casing side wall and steel pipe sheet model
It is provided with grouting port.
6. model test apparatus according to claim 1, it is characterised in that：An at least side box wall for model casing is glass box
Wall is provided with the scale arranged along the vertical direction on transparent tank wall.
7. model test apparatus described in any one according to claim 1 ~ 6, it is characterised in that：Model test apparatus further includes
The pressure that the soil solidifying compression plate and the driving soil solidifying compression plate that can be moved up and down in model casing press to model clay
Real machine structure is provided with permeable hole in soil solidifying compression plate.
8. model test apparatus according to claim 7, it is characterised in that：The soil body unity compression plate is and steel pipe sheet
The equal proportion convex structure of model parallel arrangement.
9. model test apparatus according to claim 7, it is characterised in that：Axis edge is provided in the middle part of steel pipe sheet model
The section of jurisdiction threaded hole that up and down direction extends, model test apparatus further includes for being threadedly coupled with the section of jurisdiction threaded hole with downward
The pushing tow bolt of soil solidifying compression plate described in pushing tow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982699.4A CN108872297B (en) | 2018-08-27 | 2018-08-27 | Shield tail grouting slurry coagulation and segment floating process model test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810982699.4A CN108872297B (en) | 2018-08-27 | 2018-08-27 | Shield tail grouting slurry coagulation and segment floating process model test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108872297A true CN108872297A (en) | 2018-11-23 |
| CN108872297B CN108872297B (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810982699.4A Active CN108872297B (en) | 2018-08-27 | 2018-08-27 | Shield tail grouting slurry coagulation and segment floating process model test device |
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| CN109826652A (en) * | 2019-02-01 | 2019-05-31 | 上海工程技术大学 | The simulation test device and method of slurries loss amount in shield synchronization slip casting |
| CN110219294A (en) * | 2019-07-15 | 2019-09-10 | 深圳市勘察测绘院(集团)有限公司 | It is applicable in the soil pressure cell inbuilt device of Soft Soil Area |
| CN110646164A (en) * | 2019-10-18 | 2020-01-03 | 浙江科技学院 | Experimental device for simulation shield tunnel section of jurisdiction come-up process |
| CN110657943A (en) * | 2019-10-18 | 2020-01-07 | 浙江科技学院 | Experimental device for simulating shield tunnel segment floating |
| CN111272980A (en) * | 2020-02-29 | 2020-06-12 | 西南石油大学 | Simulation system and experimental method for regulating shield floating of mudstone stratum |
| CN113418647A (en) * | 2021-06-22 | 2021-09-21 | 腾达建设集团股份有限公司 | Floating force testing device and method for shield segment in surrounding rock |
| CN113670500A (en) * | 2019-10-18 | 2021-11-19 | 浙江科技学院 | Experimental device for buoyancy measurement model of shield tunnel segment |
| CN114034845A (en) * | 2021-06-01 | 2022-02-11 | 浙江工业大学 | Visual test device for simulating grouting of grouting holes in different positions of duct piece and test method thereof |
| CN114659895A (en) * | 2022-04-13 | 2022-06-24 | 西南交通大学 | Simulation device and simulation method for shield tunnel segment deformation and ground surface settlement |
| CN114910282A (en) * | 2022-04-19 | 2022-08-16 | 中国海洋大学 | High-water-pressure shield tunnel wall back grouting and duct piece floating model test device and method |
| CN111272980B (en) * | 2020-02-29 | 2024-04-19 | 西南石油大学 | Simulation system and experimental method for regulating shield floating of mudstone stratum |
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