CN106931940B - The simulation laboratory test device of influence and be in the milk Controlling research of the piping to tunnel - Google Patents
The simulation laboratory test device of influence and be in the milk Controlling research of the piping to tunnel Download PDFInfo
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- CN106931940B CN106931940B CN201710202987.9A CN201710202987A CN106931940B CN 106931940 B CN106931940 B CN 106931940B CN 201710202987 A CN201710202987 A CN 201710202987A CN 106931940 B CN106931940 B CN 106931940B
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- grouting
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Lining And Supports For Tunnels (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The simulation laboratory test device of influence and the Controlling research that is in the milk the present invention relates to a kind of piping to tunnel, is made of model casing, tunnel-liner model, piping simulator, grouting simulator, multiple groups strain gauge, displacement meter bracket and multiple displacement meters.Tunnel-liner model is to be segmented hollow aluminum pipe, piping simulator is formed by filling out sand in plastic film, the generation of piping phenomenon of osmosis is simulated by injecting the aqueous solution of certain volume, grouting simulator includes to be made of Grouting Pipe and grouting device and be arranged in the both ends of piping simulator, wherein tunnel outer wall posts multiple groups strain gauge, to realize the strain measurement to tunnel；Displacement meter is fixed on displacement meter bracket, and the measurement to the tunnel model top soil body and tunnel subsidence may be implemented.The present invention can easily and effectively be directed to the research that influence and grouting of the Piping phenomenon to tunnel are administered, for formulating safety for tunnel engineering crossing technology standard and administering with important reference value for Piping phenomenon.
Description
Technical field
The present invention relates to the tunnels mimic experimental rig in a kind of Urban Underground Space Excavation and underground structrue engineering, tools
Body is related to the simulation laboratory test device of the influence and the Controlling research that is in the milk of a kind of piping to tunnel.
Background technique
With the further development of Chinese Urbanization, Urban Underground rail traffic is as the most conveniently urban transportation
System is also rapidly developed, and more and more river-crossing tunnels are being built.In the process of constructing tunnel, because of supporting construction
Joint treatment there are problem either precipitation it is improper so as to cause leakage, piping accident frequent occurrence.Piping is in constructing tunnel
The problem of shown in the middle is very serious, and all causes loss very serious to many engineerings.If accident cannot
Specific analysis reason, and effective treatment measures are taken, not only it cannot be guaranteed that the safety of constructing tunnel, serious to also result in
Tunnel is scrapped, and is jeopardized the safety of surrounding enviroment, is resulted in greater loss.And much to the polytechnic selection of the processing of piping
On, it is an effective and feasible method that grouting, which is administered,.Therefore, the effect that influence and grouting of the piping to tunnel are administered how is estimated
It is a key problem in constructing tunnel engineering.
Correlation scholar is mainly theoretical analysis, stochastic model, numerical simulation for influence of the piping to tunnel both at home and abroad
Method and field monitoring method.Theoretical analysis method mostlys come from engineering experience, the empirical value obtained by statistical method, Bu Nengcong
The origin cause of formation of piping is analyzed in mechanism；Stochastic model is also a certain factor and process that describe piping and occur of macroscopic view, and
It cannot comprehensively explain the mechanism of generation；The method of numerical simulation is confined in the range of finite element modelling seepage flow, by seepage flow with
Soil, which isolates, to come, and cannot consider the interaction of the soil body and seepage flow；The method of field monitoring by dimensional effect, boundary condition and
The influence of soil condition, so that monitoring result can not accurate response actual condition.
Summary of the invention
Present invention aims at above-mentioned the deficiencies in the prior art, propose that the influence and grouting of a kind of piping to tunnel are administered and ground
The simulation laboratory test device studied carefully realizes that Piping phenomenon administers tunnel subsidence, deformation, the research of stress, and observation grouting
Effect.
The technical solution adopted by the present invention to solve the technical problems is: the influence and grouting of a kind of piping to tunnel are administered
The simulation laboratory test device of research, including model casing, tunnel-liner model, piping simulator, grouting simulator, multiple groups
Strain gauge, multiple LVDT displacement meters, model casing rectangle case made of aluminum alloy materials are divided into two parts up and down,
Its top surface is set as being open；The tunnel-liner model 2 is aluminum alloy hollow pipe, and longitudinal divisions are placed in model casing top half
In sandy soils；The piping film that the piping simulator is constituted for long cartridge type plastic film, the U-shaped shape of piping film, and along longitudinal direction
It is placed on model casing, under-traverse tunnel lining model, both ends are placed in earth's surface and vertical with earth's surface；The grouting simulator is in piping
One group of grouting tubule is arranged in the long cartridge type plastic film both ends of simulator, and the fluid injection that one end installation is equipped with fluid injection solenoid valve is led
It manages, installation is equipped with the sand discharge conduit of sand discharge liquid electromagnetic valve in other end horizontal direction；Multiple LVDT displacement meters pass through displacement respectively
Meter bracket is fixed at the haunch of soil body surface and tunnel-liner model；Multiple strain gauges respectively symmetrically be arranged in tunnel mould
The vault of type and arch bottom.
Sand is filled up in advance in the piping film of the piping simulator, and the generation of Piping phenomenon is simulated by filling the water,
And pass through the volume and speed of control water filling, the generation of the different degrees of Piping phenomenon of analog.
Injection slurry in the grouting simulator is polyurethane solutions.
It is used for balance plastic foil external and internal pressure for controlling the solenoid valve of slip casting in the grouting simulator, to guarantee
Fluid pressure is equal with extraneous soil pressure in film.
The project situation that the grouting simulator analog grouting is administered, by controlling the speed of slip casting, slurry is matched
Composition and division in a proportion, grouting volume are more had to realize that the response in tunnel and the soil body under operating condition is administered in the grouting of comparative observation difference
The grouting administering method of effect.
The beneficial effects of the present invention are:
The present invention compared with prior art, has the following obvious advantages: 1, this experiment test device can be hand-made,
Popularity is good in related scientific research, and experimental test scheme has stronger scalability, can be further applicable to city shield tunnel
Phenomena such as piping infiltration occurs in road construction, which deforms tunnel itself, to be influenced in research；2, the piping tunnels mimic device of this test
Piping phenomenon can preferably be simulated to tunnel itself and using the stratum settlement after grouting treatment, and more can accurately be measured
Existing tunnel deformation influences；3, by controlling sand volumes size and flowing velocity in piping simulator in this test,
The displacement deformation that tunnel under different Piping phenomenons may be implemented influences, to obtain a series of experimental data under different operating conditions；
4, can be by the slurries ratio of controlled grouting, filling speed in this test, position of being in the milk, to realize different grouting situations to pipe
Emerge in large numbers the regulation effect of elephant；5, this test is first corrected tunnel model whole body strain gauge before experiment, by tunnel
The correction of lower moment of flexure strain gauge and axle power strain gauge, the moment of flexure and axle power of tunnel everywhere when can go out model test with reverse, more entirely
Influence suffered by the reaction tunnel in face.6, the test that carrying out Piping phenomenon using this set simulating test device influences tunnel is ground
Study carefully, good consulting can be provided for Tunnel Engineering site operation and suggest, provides certain reason for formulating safety for tunnel engineering
By reference.
Detailed description of the invention
Fig. 1 is simulating test device schematic diagram in the model casing of the present invention in embodiment；
Fig. 2 is the piping and grouting simulation schematic device of the present invention in embodiment；
Fig. 3 is foil gauge position view on the tunnel of the present invention in embodiment；
Fig. 4 is the displacement meter arrangement schematic diagram of the present invention in embodiment.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in further detail by a preferred embodiment.
Firstly, one 2, one, the tunnel-liner model of model casing 1, one piping simulator of production, a grouting simulation
Device.
Fig. 1 is simulating test device schematic diagram in the model casing of the present invention in embodiment, as shown in Figure 1, outside model casing 1
Shape is in cuboid, and interior space dimension is the mm(of mm × 500 of 800 mm × 500 length × width × height), by 5 with a thickness of 15 mm
Aluminium alloy plate splice composition.Tunnel-liner model 2 is four sections of hollow aluminium alloy pipes 3, and outer diameter is 80 mm, and internal diameter is 70 mm,
Wall thickness is 5 mm, and axial segmentation length is 100 mm.100 mm of lining model section outer diameter, 70 mm of internal diameter.
Fig. 2 is the piping simulator of the present invention in embodiment and grouting simulation schematic device.As shown in Fig. 2, pipe
Simulator is gushed, inside fills out that sand is U-shaped to be placed along longitudinal direction, under-traverse tunnel, both ends are placed in earth's surface and vertical with earth's surface；
The piping film 5 of piping simulator is the long cartridge type plastic film that diameter is 8 mm, is placed in ground for 5 both ends of piping film
Table and vertical with earth's surface, arranges 1 perfusing hole, 6,1 liquid receiving mouth 7.The simulator that is in the milk is moulded in the long cartridge type of piping simulator
Expect film both ends, 1 group of grouting tubule is set, and one end installation is equipped with the injection catheter 8 of fluid injection solenoid valve, in other end horizontal direction
Upper installation is equipped with the sand discharge conduit 9 of sand discharge liquid electromagnetic valve.Wherein note, draining solenoid valve are universal models, injection catheter and row
Fluid catheter outer diameter is 5 mm, and wall thickness is 1 mm；Note, drain pipe outside diameter are 10 mm, and wall thickness is 2 mm.
Fig. 3 show foil gauge location arrangements figure.Model body outer wall pastes 16 foil gauges, wherein foil gauge 37, and 38,
39,40,41,42,43,44 are attached to tunnel arch bottom, and foil gauge 45,46,47,48,49,50,51,52 is attached at tunnel vault,
Ipsilateral foil gauge interval 50mm, wherein foil gauge 37,44,45,52 respectively apart from tunnel edge 25mm.
Start to insert sand into model casing, when soil thickness is filled to 140mm, that is, completes subbase soil, be put into pipe
Model 5 is gushed, so that piping model least significant end center line is overlapped with model casing axis, and keeps piping model 5 vertical with soil layer holding,
Ensure the leakage of piping two-port in native table and vertical with earth's surface.
Continue to banket until thickness completes tunnel subjacent bed soil, tunnel-liner model 2 is put into sand table up to 200mm
Layer.So that tunnel model center line is overlapped with model casing axis.
Continue to banket until thickness reaches 350mm, that is, completion of banketing.Edpth of tunnel 40mm at this time, piping device depth are
200mm.Whole LVDT displacement meters are fixed on tunnel haunch and soil body ground surface by displacement meter bracket, and are made LVDT each
It moves meter to keep straight up, horizontal direction is fixed, and vertical direction can be adjusted.
Fig. 4 is the displacement meter support schematic diagram of the present invention in embodiment.As shown in figure 4, displacement meter 11,14,17,20,
23,26,29,32,35, it is fixed on soil body ground surface, displacement meter 10,13,16,19,22,25,28,31,34 is fixed on Tunnel Right
At the haunch of side, displacement meter 12,15,18,21,24,27,30,33,36 is fixed on the left of tunnel at haunch, whole displacement meter upper ends
It is fixed on displacement meter bracket 4.Each displacement meter interval 40mm is evenly arranged at soil body ground surface and haunch, both ends of them displacement
Meter 22,23,24,34,35,36 is apart from tunnel face 40mm apart from case side 90mm.LVDT displacement meter end is bonded with adhesive plaster respectively
In the grittiness soil body and tunnel-liner outer surface.In the present embodiment, displacement meter is used for tunnel-liner outer surface and soil body ground surface
Longitudinal Settlement measurement, specifically measure numerical value can be obtained by external displacement data Acquisition Instrument.
When test, a small amount of water is injected into piping device using provisions for grouting 6 first, so that Piping phenomenon occurs.Period
Observe and record each meter reading.(it can be by controlling the volume of injected water volume, speed controls different degrees of Piping phenomenon
Occur)；Then, it begins through grouting device 6 and injects slurry, husky liquid is recycled by liquid receiving device 7, during which observes and records each instrument
Meter reading, and compared and analyzed with reading when piping generation.Furthermore it is possible to the speed of slip casting is controlled, the match ratio of slurry,
Grouting volume, to realize the tunnel under comparative observation difference grouting operating condition.The dependent variable of soil body sedimentation value and tunnel, to
Obtain more efficiently grouting administering method.
Embodiments of the present invention are illustrated above, but the present invention is not limited thereto, can also without departing from
It is suitably changed in the range of main points of the invention.
The simulation laboratory test device of influence and be in the milk Controlling research of the above embodiment of the present invention by piping to tunnel,
Can obtain the influence that tunnel subsidence under different Piping phenomenons deforms, and grouting administer after tunnel strain value, Zong Xiangchen
The technical effect of depreciation and soil body ground surface Longitudinal Settlement value.
Claims (5)
1. the simulation laboratory test device of influence and be in the milk Controlling research of a kind of piping to tunnel, including model casing (1), tunnel
Lining model (2), piping simulator, grouting simulator, multiple groups strain gauge, multiple LVDT displacement meters, it is characterised in that: institute
Model casing (1) rectangle case made of aluminum alloy materials is stated, is divided into two parts up and down, top surface is set as being open；The tunnel
Road lining model (2) is aluminum alloy hollow pipe, and longitudinal divisions are placed in the sandy soils of model casing top half；The piping mould
The piping film (5) that quasi- device is constituted for long cartridge type plastic film, piping film (5) U-shaped shape, and it is placed on model casing along longitudinal direction,
Under-traverse tunnel lining model (2), both ends are placed in earth's surface and vertical with earth's surface；The grouting simulator is in piping simulator
One group of grouting tubule is arranged in long cartridge type plastic film both ends, and one end installation is equipped with the injection catheter (8) of fluid injection solenoid valve, the other end
Installation is equipped with the sand discharge conduit (9) of sand discharge liquid electromagnetic valve in horizontal direction；Multiple LVDT displacement meters pass through displacement meter bracket respectively
It is fixed at the haunch of soil body surface and tunnel-liner model；The arch for being arranged in tunnel model of multiple strain gauges respectively symmetrically
Top and arch bottom.
2. the simulation laboratory test device of influence and be in the milk Controlling research of the piping according to claim 1 to tunnel,
It is characterized in that: filling up sand in advance in the piping film (5) of the piping simulator, the hair of Piping phenomenon is simulated by filling the water
It is raw, and pass through the volume and speed of control water filling, the generation of the different degrees of Piping phenomenon of analog.
3. the simulation laboratory test device of influence and be in the milk Controlling research of the piping according to claim 1 to tunnel,
Be characterized in that: the injection slurry in the grouting simulator is polyurethane solutions.
4. the simulation laboratory test device of influence and be in the milk Controlling research of the piping according to claim 1 to tunnel,
It is characterized in that: balance plastic foil external and internal pressure is used for for controlling the solenoid valve of slip casting in the grouting simulator, to protect
It is equal with extraneous soil pressure to demonstrate,prove fluid pressure in film.
5. the simulation laboratory test dress of influence and be in the milk Controlling research of the piping according to claim 1 to 4 to tunnel
It sets, it is characterised in that: the project situation that the grouting simulator analog grouting is administered, by controlling the speed of slip casting, slurry
The match ratio of body, grouting volume obtain to realize that the response in tunnel and the soil body under operating condition is administered in the grouting of comparative observation difference
More efficiently grouting administering method.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710202987.9A CN106931940B (en) | 2017-03-30 | 2017-03-30 | The simulation laboratory test device of influence and be in the milk Controlling research of the piping to tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710202987.9A CN106931940B (en) | 2017-03-30 | 2017-03-30 | The simulation laboratory test device of influence and be in the milk Controlling research of the piping to tunnel |
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| CN106931940A CN106931940A (en) | 2017-07-07 |
| CN106931940B true CN106931940B (en) | 2019-03-05 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110954676B (en) * | 2019-12-03 | 2021-06-29 | 同济大学 | Visual test device for simulating shield tunneling existing tunnel construction |
| CN116067845B (en) * | 2022-11-23 | 2024-02-23 | 山东大学 | Test device and method for monitoring disturbance of stratum grouting to tunnel structure |
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| CN102071943A (en) * | 2010-12-13 | 2011-05-25 | 上海大学 | Centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction |
| CN103115788A (en) * | 2012-11-20 | 2013-05-22 | 上海理工大学 | Indoor model experience device with existing tunnel affected by double subway construction |
| CN104880396A (en) * | 2015-05-26 | 2015-09-02 | 上海大学 | Soil body two-direction seepage model device under external load action and testing method |
| CN105928486A (en) * | 2016-05-02 | 2016-09-07 | 北京工业大学 | Test apparatus and method for measuring neighborhood rain sewage pipeline deformation caused by tunnel construction |
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2017
- 2017-03-30 CN CN201710202987.9A patent/CN106931940B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071943A (en) * | 2010-12-13 | 2011-05-25 | 上海大学 | Centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction |
| CN103115788A (en) * | 2012-11-20 | 2013-05-22 | 上海理工大学 | Indoor model experience device with existing tunnel affected by double subway construction |
| CN104880396A (en) * | 2015-05-26 | 2015-09-02 | 上海大学 | Soil body two-direction seepage model device under external load action and testing method |
| CN105928486A (en) * | 2016-05-02 | 2016-09-07 | 北京工业大学 | Test apparatus and method for measuring neighborhood rain sewage pipeline deformation caused by tunnel construction |
Non-Patent Citations (3)
| Title |
|---|
| Boundary element model for analysis of the mechanical behavior of existing pipelines subjected to tunneling-induced deformations;Zhiguo Zhang et,al.;《Camnuters and Geotechnics》;20120910(第46期);第93-103页 |
| 海底管道冲刷及波浪力试验研究;刘贞飞;《中国优秀硕士学位论文全文数据库基础科技辑》;20080315(第3期);第A010-36页 |
| 管涌试验模型研究进展综述;贾春兰;《新疆水利》;20151231(第4期);第25-29页 |
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