CN209624532U - A kind of pilot system of simulation shield tunnel compensation and grouting expansion form - Google Patents
A kind of pilot system of simulation shield tunnel compensation and grouting expansion form Download PDFInfo
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- CN209624532U CN209624532U CN201920114045.XU CN201920114045U CN209624532U CN 209624532 U CN209624532 U CN 209624532U CN 201920114045 U CN201920114045 U CN 201920114045U CN 209624532 U CN209624532 U CN 209624532U
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Abstract
The utility model provides a kind of pilot system of simulation shield tunnel compensation and grouting expansion form, first allocation models analog material；Then pilot system is assembled；Tunnel is simulated again to backbreak, and measures the situation of change of the soil body；Then analog compensation slip casting measures the expansion form and soil body situation of change of slip casting；Data analysis is finally carried out, obtains the expansion profile computation model of compensation and grouting expansion form.The test method of simulation shield tunnel compensation and grouting expansion form provided by the utility model, solving the problems, such as that drainage hole is easily blocked by overcoating film in such a way that tunnel model outer surface adds and carves diversion trench, also solve the problems, such as the injection and uneven distribution of the relatively poor slurries of mobility.It is capable of the slurry material of self-hardening by injecting, the relationship of slip casting cancellation ratio and earth's surface and inside soil body vertical displacement can not only be described, and the expansion form of shield tunnel compensation and grouting can be obtained.Have great importance to the practice of shield tunnel compensation and grouting.
Description
Technical field
The utility model belongs to underground engineering experimental technique field, and in particular to a kind of simulation shield tunnel compensation and grouting expansion
Open the pilot system of form.
Background technique
With the quickening of urbanization process, Development of Urban Underground Rail Transit has been trend of the times.Underground Rail Transit is most
Common form of construction work is shield construction.The indoor model test device of shield construction generally uses water-filled balloon method, in tunnel
Model is cladded with rubber membrane, simulates that tunnel is backbreak and compensation and grouting is to stratum deformation and ground settlement by way of draining and filling the water
Influence, can not obtain the pressure of tunnel surrounding soil during compensation and grouting, deformation and expansion form.Tunnel model material
Because the pressure by soil layer around acts on, easily cause the rubber membrane adsorption phenomena at the discharge outlet of tunnel model to cause
Severe blockage at discharge outlet is unfavorable for normal industrial and commercial bank's draining.And existing shield tunnel Experimental mimic system or method are equal
It is unable to get true slurries expansion form when compensation and grouting, Cavity expansion method can only be uniformly reduced to, cause biggish calculating
Deviation.
Accordingly, it is desirable to provide a kind of expand form for the insufficient simulation shield tunnel compensation and grouting of the above-mentioned prior art
Pilot system.
Utility model content
The purpose of this utility model is to provide it is a kind of simulation shield tunnel compensation and grouting expansion form pilot system with
At least solve the current easy blockage problem of shield tunnel Experimental mimic system drainage hole.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of pilot system of simulation shield tunnel compensation and grouting expansion form, comprising:
Model test box, the model test box include cabinet and are laid on the intracorporal soil body of the case；The cabinet is
Open-topped rigid box；
Tunnels mimic device, the tunnels mimic device are placed in the soil body of the model test box, the tunnel mould
Quasi- device includes tunnel model, overcoating film, diversion trench and sealing ring, and the tunnel model is tubular structure, the tunnel mould
The outer surface of type is provided with the diversion trench of indent, and the overcoating film is by the tunnel model circumferential direction tight, the sealing
Ring is located at the both ends of the tunnel model, and the tunnel model and the overcoating film are closely joined together, the tunnel is made
Closed structure is formed between the outer surface of road model and the overcoating film；The both ends of the surface of the tunnel model be respectively arranged with into
Liquid mouth and liquid outlet, the inlet and the liquid outlet by the cavity formed between tunnel model outer surface and overcoating film with
External world's connection；
Compensation and grouting simulator, the compensation and grouting simulator are connect with the inlet and the liquid outlet, are led to
Cross inlet slip casting into the tunnels mimic device；
The soil body settles information collecting device, and the soil body sedimentation information is arranged in the top of the model test box, is used for
Measure the soil body sedimentation situation；
Resistance to shear of soil information collecting device, the resistance to shear of soil information collecting device is for measuring the tunnels mimic device
The resistance to shear of soil variation of surrounding.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the compensation and grouting
Simulator includes priming device, inlet tube, liquid feed valve, drain pipe and tapping valve；The priming device passes through the inlet tube
It is connected to the inlet, is provided with the liquid feed valve in the middle part of the inlet tube；The drain pipe connects the liquid outlet, described
The tapping valve is provided in the middle part of drain pipe.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the soil body sedimentation
Information collecting device includes processor, mechanical displacement sensor, optical displacement sensor, displacement guide rod and sensor branch
Frame；The mechanical displacement sensor and the optical displacement sensor are separately fixed at the mould by the sensor stand
One end of the top of type chamber, the displacement guide rod is connect with the mechanical displacement sensor, described to be displaced the another of guide rod
One end probes into the soil body；The optical displacement sensor and the mechanical displacement sensor respectively with the processor
Connection, convenient for reading the shift value of measurement.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the resistance to shear of soil
Information collecting device includes pressure sensor, and the pressure sensor is distributed in the outer surface of the overcoating film, the pressure
Sensor is connected to the processor, convenient for reading the pressure value of pressure sensor measurement.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the sensor branch
Frame is using measurement crossbeam, side wall upper part of the measurement crossbeam crossbearer in the model test box, the upper table of the measurement crossbeam
Face keeps horizontal.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the mechanical position
Displacement sensor and the optical displacement sensor are vertical with the measurement upper surface holding of crossbeam respectively.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the compensation and grouting
Simulator further includes pressure gauge, and the pressure gauge is arranged on the inlet tube between liquid feed valve and inlet.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the diversion trench packet
Circumferential spiral stream guidance slot and longitudinal diversion trench are included, the appearance of the tunnel model is arranged in the circumferential direction spiral stream guidance slot spiral
Face, the longitudinal direction diversion trench are parallel with the axis of the tunnel model.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the circumferential direction spiral
The cross section of diversion trench is v-shaped structure slot；The cross section of the longitudinal direction diversion trench is U-shaped structure slot.
The pilot system of simulation shield tunnel compensation and grouting expansion form as described above, it is preferred that the circumferential direction spiral
The cross section of diversion trench is opening width 3mm, depth 3mm；The cross section of the longitudinal direction diversion trench is opening width 4mm, depth
Degree is 3mm.
Compared with the immediate prior art, technical solution provided by the utility model has following excellent effect:
The pilot system of simulation shield tunnel compensation and grouting expansion form provided by the utility model, by tunnel model
Outer surface adds the mode for carving diversion trench to solve the problems, such as that drainage hole is easily blocked by overcoating film, also solves mobility relatively
The problem of injection and uneven distribution of the slurries of difference.It is capable of the slurry material of self-hardening by injecting, can not only describes to infuse
The relationship of cancellation ratio and earth's surface and inside soil body vertical displacement is starched, and the expansion shape of shield tunnel compensation and grouting can be obtained
State.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical
Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model.
Wherein:
Fig. 1 is the structure master that the simulation shield tunnel compensation and grouting of the utility model embodiment expands the pilot system of form
View；
Fig. 2 is the structure left side that the simulation shield tunnel compensation and grouting of the utility model embodiment expands the pilot system of form
View；
Fig. 3 is the tunnels mimic device of the utility model embodiment and the schematic device of compensation and grouting simulator；
Fig. 4 is h- θ of the slurries thickness h around tunnel between central angle θ around the tunnel of the utility model embodiment
Tables of data；
Fig. 5 is the outer profile coordinate scatter plot of the expansion form of the tunnel compensation slip casting in Fig. 4.
In figure: 1, model test box；11, the soil body；12, rigid border；13, tempered glass side plate；14, crossbeam is loaded；15,
Adjustable support leg；151, universal wheel；16, crossbeam is measured；17, T-type sliding slot；18, altitude scale ruler；19, length scale ruler；21, tunnel
Road model；22, it is cladded with film；23, sealing ring；24, inlet；25, liquid outlet；26, circumferential spiral stream guidance slot；27, longitudinal to lead
Chute；31, priming device；32, inlet tube；33, liquid feed valve；34, drain pipe；35, tapping valve；36, pressure gauge；41, mechanical
Displacement sensor；42, optical displacement sensor；43, it is displaced guide rod.
Specific embodiment
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.It should be noted that not conflicting
In the case where, the features in the embodiments and the embodiments of the present application can be combined with each other.
In the description of the present invention, term " longitudinal direction ", " transverse direction ", "upper", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings,
It is merely for convenience of description the utility model rather than requires the utility model that must be constructed and operated in a specific orientation, therefore
It should not be understood as limiting the present invention.Term used in the utility model " connected ", " connection " shall be understood in a broad sense,
For example, it may be being fixedly connected, may be a detachable connection；It can be directly connected, it can also be indirect by intermediate member
It is connected, for the ordinary skill in the art, can understands the concrete meaning of above-mentioned term as the case may be.
Specific embodiment according to the present utility model, as Figure 1-Figure 5, the utility model provide a kind of simulation shield tunnel
The pilot system of road compensation and grouting expansion form, comprising:
Model test box 1, model test box 1 include cabinet and are laid on the intracorporal soil body 11 of case；Cabinet is top opening
Rigid box；In order to reinforce the intensity of model test box 1, rigid border 12 is provided at the frame of cabinet, for the ease of seeing
The laying condition for examining the soil body 11 in cabinet, the side wall using the transparent panel of rigidity as cabinet, such as the tempering with a thickness of 16mm
Glass side plate 13.In order to convenient for being compacted layer by layer, be provided with and rigid border in the top of model test box 1 after being laid with the soil body 11
The load crossbeam 14 of 12 connections when needing compacted fill 11, hydraulic press is mounted on load crossbeam 14, soil layer is easy to implement
Compacting.For the ease of transhipment, the bottom of model test box 1 is provided with universal wheel 151.In order to facilitate the water of model test box 1
Heibei provincial opera is whole, and the bottom of model test box 1 is provided with adjustable support leg 15.When in use, when model test box 1 is placed on reasonable position
It postpones, adjusts adjustable support leg 15, universal wheel 151 is made to leave ground, and keep model casing holding horizontal.For the ease of in observation cabinet
11 situation of change of the soil body, the utility model sets respectively at the vertical rigid border 12 and upper level rigid border 12 of cabinet
Set altitude scale ruler 18 and length scale ruler 19.
Tunnels mimic device, tunnels mimic device are placed in the soil body 11 of model test box 1, and tunnels mimic device includes
Tunnel model 21, overcoating film 22, diversion trench and sealing ring 23, tunnel model 21 is tubular structure, in the reality of the utility model
It applies in example, tunnel model 21 uses pvc material, and the outer surface of tunnel model 21 is provided with the diversion trench of indent.It is cladded with thin
The circumferential tight of tunnel model 21 is cladded with film 22 and uses rubber material, both ensure that elastic demand, also make to be cladded with by film 22
The intensity meet demand of film 22 avoids rupture caused by pressure.Sealing ring 23 is located at the both ends of tunnel model 21, by tunnel
Model 21 and overcoating film 22 are closely joined together, and make to be formed between the outer surface of tunnel model 21 and overcoating film 22 closed
Structure；The both ends of the surface of tunnel model 21 are respectively arranged with inlet 24 and liquid outlet 25, and inlet 24 and liquid outlet 25 are by tunnel
The cavity formed between 21 outer surface of model and overcoating film 22 is in communication with the outside；25 quilt of inlet 24 and liquid outlet in order to prevent
The overcoating absorption of film 22 blocking, in the embodiments of the present invention, inlet 24 and liquid outlet 25 are separately connected diversion trench.It is excellent
Selection of land, diversion trench include that circumferential spiral stream guidance slot 26 and longitudinal diversion trench 27, circumferential 26 spiral of spiral stream guidance slot are arranged in tunnel
The outer surface of model 21, longitudinal diversion trench 27 are parallel with the axis of tunnel model 21.Further, circumferential spiral stream guidance slot 26
The v-shaped structure that cross section is opening width 3mm, depth is 3mm；The cross section of longitudinal diversion trench 27 is opening width 4mm, depth
For the U-shaped section of 3mm.
Compensation and grouting simulator, compensation and grouting simulator include priming device 31, inlet tube 32, liquid feed valve 33, row
Liquid pipe 34 and tapping valve 35；Priming device 31 is connected to inlet 24 by inlet tube 32, is provided with feed liquor in the middle part of inlet tube 32
Valve 33；Drain pipe 34 connects liquid outlet 25, is provided with tapping valve 35 in the middle part of drain pipe 34；Preferably, compensation and grouting simulator
It further include pressure gauge 36, pressure gauge 36 is arranged on the inlet tube 32 between liquid feed valve 33 and inlet 24.
The soil body 11 settles information collecting device, and it includes processor, mechanical displacement biography that the soil body 11, which settles information collecting device,
Sensor 41, optical displacement sensor 42, displacement guide rod 43 and sensor stand；Sensor stand is by mechanical displacement sensor
41 and optical displacement sensor 42 be separately fixed at the top of model test box 1, be displaced one end and mechanical position of guide rod 43
Displacement sensor 41 connects, and the other end of displacement guide rod 43 probes into the soil body 11；Optical displacement sensor 42 and mechanical displacement
Sensor 41 is connect with processor respectively, convenient for reading measurement numerical value.Preferably, sensor stand is surveyed using measurement crossbeam 16
16 crossbearer of crossbeam is measured in the side wall upper part of model test box 1, the upper surface of measurement crossbeam 16 keeps horizontal；It is horizontal for the ease of measurement
The installation of beam 16,12 upper surface of rigid border above the side wall of model test box 1 are provided with positioning runner such as T-type sliding slot
17.More preferably, the upper surface of mechanical displacement sensor 41 and optical displacement sensor 42 respectively with measurement crossbeam 16 is protected
It holds vertical.
11 stress information acquisition device of the soil body, 11 stress information acquisition device of the soil body includes pressure sensor, pressure sensing
Device is distributed in the outer surface of overcoating film 22, and pressure sensor is connect with processor, convenient for reading the pressure of pressure sensor measurement
Power numerical value.
The utility model also provides the test method of the pilot system of simulation shield tunnel compensation and grouting expansion form, packet
Include following steps:
S1, the soil body 11 of the allocation models analog material as test；The step specifically comprises the following steps:
S11 determines testing program and its similar parameter；
It is reported according to project situation and geologic prospect and determines testing program；Similar parameter is determined according to the theory of similarity, including
Geometric similarity constant, time affinity constant, cohesive strength affinity constant, internal friction angle affinity constant, compression modulus affinity constant and
Severe affinity constant.
S12 prepares similar model material；
According to the similar parameter determined in Practical Project situation and step S11, the physical force of similar model material is calculated
Learn index, including geometric dimension, cohesive strength, angle of friction, compression modulus, severe etc.；It selects suitable analog material and is matched
Composition and division in a proportion design and test, make the soil body 11 of the similar model material as test.
S2 assembles pilot system；The step specifically comprises the following steps:
S21, combines the model test box 1 met the size requirements, and the adjustable support leg 15 of adjustment 1 bottom of model test box makes mould
Type chamber 1 keeps horizontal.
S22 measures crossbeam 16 in the axis installation of tunnel model 21 in the upper vertical of model test box 1, measures crossbeam
16 are mounted on T-type sliding slot 17, and convenient for adjustment position in real time, the midpoint of measurement crossbeam 16 installs optical displacement sensor
42, and successively to both ends symmetry arrangement optical displacement sensor 42 centered on the midpoint to measure crossbeam 16；In another survey
Mechanical displacement sensor 41, the arrangement mode and photo-electric displacement sensing of mechanical displacement sensor 41 are installed on amount crossbeam 16
The arrangement mode of device 42 is identical；
The soil body 11 configured in step S1 is successively layered in filling model casing and paves by S23, when the soil body 11 is filled extremely
When designed elevation, the optical displacement sensor 42 for being located at measurement 16 midpoint of crossbeam is opened, is placed according to the position of laser point
Tunnel model 21 makes the vertex of tunnel model 21 be located at same vertical guide with measurement 16 midpoint of crossbeam is stated；
S24 opens tapping valve 35 and liquid feed valve 33, starts fluid injection by priming device 31, the exit to drain pipe 34
It overflows and is cladded with when film 22 is still close to the outer surface of tunnel model 21 in diversion trench full of water there is no bubble and close drain
35, valve, calculate inlet tube 32, the volume of water is V in diversion trench and drain pipe 341；In the embodiments of the present invention,
Priming device 31 is convenient for real-time statistics fluid injection volume using with graduated impregnator；In the 34 exit amount of being provided with of drain pipe
Cylinder, convenient for measurement drain volume.
S25 opens liquid feed valve 33, backbreaks volume accordingly according to testing program injection as V2Water；Along tunnel model 21
The circumferential appearance in overcoating film 22 of radial section is evenly distributed with 8 pressure sensors；The soil body 11 is continued to fill up to test requirements document
At absolute altitude and carry out smooth；Stablize the post debugging soil body 11 to the soil body 11 and settles information collecting device and the acquisition of 11 stress information of the soil body
Device, makes optical displacement sensor 42, mechanical displacement sensor 41 and pressure sensor normal work and measurement numerical value exists
Effective surveying range intermediate range, measures convenient for subsequent accurate and effective.
S3, simulation tunnel are backbreak, and 11 situation of change of the soil body is measured；The step specifically comprises the following steps:
S31, simulation are backbreak, and tapping valve 35 is opened, and slowly extracting volume out from tapping valve 35 is V2Water.
S32, measurement, earth's surface after being backbreak by optical displacement sensor 42 and the record simulation of mechanical displacement sensor 41
And the settling amount on stratum, the stress variation situation of the soil body 11 after being drawn water by pressure sensor record.
S4, analog compensation slip casting measure 11 situation of change of expansion form and the soil body of slip casting；The step specifically includes as follows
Operating procedure:
S41 configures grouting serous fluid；
Grouting serous fluid requires following characteristic: (1) preferable mobility；(2) not bleeding；(3) cubical contraction is less than
0.1%；(4) after a certain time can self-hardening and have certain intensity.In order to reach the slurry characteristics of requirement, choose
The superfine cement grouting material of 800 mesh is added the melamine water reducing agent that mass fraction is 0.3% and is carried out uniformly with the ratio of mud 0.5
Grouting serous fluid is made in stirring, and the grout coordinate ratio is simple, easy to operate, meets the use demand of grouting serous fluid.In the present embodiment
In, water-reducing agent is high efficiency water reducing agent, and water-reducing agent can be melamine water reducing agent (such as melamine water reducing agent in this example), powder
Last carboxylic acid esters water-reducing agent, polycarboxylate high performance water-reducing agent.The water-reducing rate that such water-reducing agent can satisfy grout material is high, flows
The good requirements of performances such as good, the isolation bleeding of performance.
S42, analog compensation slip casting measure 11 situation of change of expansion form and the soil body of slip casting；The step specifically include as
Lower operating procedure:
S421 opens liquid feed valve 33 and tapping valve 35, and it is V that volume is slowly injected into from inlet 241Grouting serous fluid, together
It is V that step, which slowly extracts volume out from the exit of drain pipe 34,1Water after close tapping valve 35.
S422, according to experimental design substep, injected slurry volume is V every time1/ 100 grouting serous fluid simultaneously records injection slip casting every time
The numerical value of optical displacement sensor 42, mechanical displacement sensor 41 and pressure sensor after slurries, until tunnels mimic fills
The 11 centre of surface point of the soil body for setting top is raised to the absolute altitude before backbreaking, and closes liquid feed valve 33.
S423 passes through optical displacement sensor 42 and mechanical displacement sensor 41 after grouting serous fluid hardening solidification
The misalignment inside earth's surface and the soil body 11 is measured, answering for tunnels mimic device surrounding soil 11 is measured by pressure sensor
The variation of power p；
S424 takes out tunnels mimic device, and the radial cuts along tunnels mimic device intercept cross section, establishes flat square
Coordinate system, on the tunnels mimic device cross section of interception, the wall thickness of measurement annulus everywhere is infused after can be obtained compensation and grouting
Starch thickness, that is, tunnel compensation slip casting expansion form of the slurries around tunnel model 21.The wall thickness of annulus can be using using throwing
The mode of shadow measures statistics, the measurement of uniformly distributed multiple measuring points progress wall thickness can also count on annulus.In this implementation
In example, 16 measuring points are circumferentially evenly distributed in annulus, the wall thickness at this 16 measuring points are measured, by the coordinate at the center of annulus and coordinate system
Origin is overlapped, and using coordinate origin as the center of circle, the axis of abscissas to be located at the first, fourth quadrant is counterclockwise measured as start edge
Every the coordinate of the annulus outer profile of 22.5 ° of central angles.
The data measured in step S3 and step S4 are carried out analysis and arrangement by S5, data analysis, show that compensation and grouting is expanded
The expansion profile computation model of form；The step specifically includes following operating procedure:
S51 draws the s-q curve between earth's surface and the soil body 11 inside vertical displacement s and slip casting cancellation ratio q；In this implementation
In example, slip casting cancellation ratio q is equal to the amount of backbreaking V2With the ratio of the volume of tunnel cylindrical body；S-q curve be in order to obtain slip casting after
The value of earth's surface lifting, entire curve divide gradient slip casting, and earth's surface also can be accordingly lifted, this curve is exactly the grouting amount of each gradient
With the curve of the scatterplot fitting of earth's surface lifting numerical value in one drawing, the rule of grouting amount and earth's surface lifting has thus been obtained.
S52 draws the p-q curve between tunnel tube wall surrounding soil 11 stress p and slip casting cancellation ratio q；To obtain slip casting
To the disturbance situation of surrounding soil 11 in work progress.
S53 draws h- θ tables of data of the slurries thickness h around tunnel between central angle θ around tunnel, attached in table
Add the outer profile radius r of the measurement point, and makes the coordinate scatter plot of outer profile according to tables of data, then choose suitable function
It is fitted and show that compensation and grouting expands profile, for optimizing computation model.
In calculating of the tunnel compensation slip casting to earth surface effects, expansion is calculated using numerical analysis software in initial stage for this test
Open profile computation model.After the measurement numerical value in step S51- step S53 comes out, measurement numerical value is subjected to analysis and arrangement, it is right
Expansion profile computation model optimizes, to make to calculate more accurate.
In conclusion the pilot system of simulation shield tunnel compensation and grouting expansion form provided by the utility model, passes through
Add the mode for carving diversion trench to solve the problems, such as that drainage hole is easily blocked by overcoating film in tunnel model outer surface, also solves stream
The problem of injection and uneven distribution of the relatively poor slurries of dynamic property.It is capable of the slurry material of self-hardening by injecting, not only
The relationship of slip casting cancellation ratio and earth's surface and inside soil body vertical displacement can be described, and shield tunnel compensation and grouting can be obtained
Expansion form.
In calculating of the tunnel compensation slip casting to earth surface effects, initial stage is calculated the utility model using numerical analysis software.
Then the numerical value of actual measurement is analyzed, and computation model is optimized based on the analysis results, to make to calculate more
Precisely.Have great importance to the practice of shield tunnel compensation and grouting.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of pilot system of simulation shield tunnel compensation and grouting expansion form, which is characterized in that the pilot system includes:
Model test box, the model test box include cabinet and are laid on the intracorporal soil body of the case；The cabinet is top
The rigid box of opening；
Tunnels mimic device, the tunnels mimic device are placed in the soil body of the model test box, the tunnels mimic dress
It sets including tunnel model, overcoating film, diversion trench and sealing ring, the tunnel model is tubular structure, the tunnel model
Outer surface is provided with the diversion trench of indent, and the overcoating film is by the tunnel model circumferential direction tight, the sealing ring position
In the both ends of the tunnel model, the tunnel model and the overcoating film are closely joined together, make the tunnel mould
Closed structure is formed between the outer surface of type and the overcoating film；The both ends of the surface of the tunnel model are respectively arranged with inlet
And liquid outlet, the inlet and the liquid outlet are by the cavity formed between tunnel model outer surface and overcoating film and extraneous
Connection；
Compensation and grouting simulator, the compensation and grouting simulator are connect with the inlet and the liquid outlet, pass through institute
State inlet slip casting into the tunnels mimic device；
The soil body settles information collecting device, and the top of the model test box is arranged in the soil body sedimentation information collecting device,
For measuring the soil body sedimentation situation；
Resistance to shear of soil information collecting device, the resistance to shear of soil information collecting device is for measuring around the tunnels mimic device
Resistance to shear of soil variation.
2. the pilot system of simulation shield tunnel compensation and grouting expansion form as described in claim 1, which is characterized in that described
Compensation and grouting simulator includes priming device, inlet tube, liquid feed valve, drain pipe and tapping valve；The priming device passes through institute
It states inlet tube and is connected to the inlet, be provided with the liquid feed valve in the middle part of the inlet tube；The drain pipe connection is described out
Liquid mouth, the drain pipe middle part are provided with the tapping valve.
3. the pilot system of simulation shield tunnel compensation and grouting expansion form as described in claim 1, which is characterized in that described
Soil body sedimentation information collecting device includes processor, mechanical displacement sensor, optical displacement sensor, displacement guide rod and biography
Sensor bracket；The mechanical displacement sensor and the optical displacement sensor are separately fixed at by the sensor stand
One end of the top of the model test box, the displacement guide rod is connect with the mechanical displacement sensor, and the displacement is led
The other end of bar probes into the soil body；The optical displacement sensor and the mechanical displacement sensor respectively with it is described
Processor connection, convenient for reading the shift value of measurement.
4. the pilot system of simulation shield tunnel compensation and grouting expansion form as claimed in claim 3, which is characterized in that described
Resistance to shear of soil information collecting device includes pressure sensor, and the pressure sensor is distributed in the outer surface of the overcoating film,
The pressure sensor is connected to the processor, convenient for reading the pressure value of pressure sensor measurement.
5. the pilot system of simulation shield tunnel compensation and grouting expansion form as claimed in claim 3, which is characterized in that described
Sensor stand is using measurement crossbeam, side wall upper part of the measurement crossbeam crossbearer in the model test box, the measurement cross
The upper surface of beam keeps horizontal.
6. the pilot system of simulation shield tunnel compensation and grouting expansion form as claimed in claim 5, which is characterized in that described
Mechanical displacement sensor and the optical displacement sensor are vertical with the measurement upper surface holding of crossbeam respectively.
7. the pilot system of simulation shield tunnel compensation and grouting expansion form as claimed in claim 2, which is characterized in that described
Compensation and grouting simulator further includes pressure gauge, and the pressure gauge is arranged on the inlet tube between liquid feed valve and inlet.
8. the pilot system of simulation shield tunnel compensation and grouting expansion form as described in claim 1, which is characterized in that described
Diversion trench includes circumferential spiral stream guidance slot and longitudinal diversion trench, and the circumferential direction spiral stream guidance slot spiral is arranged in the tunnel model
Outer surface, it is described longitudinal direction diversion trench it is parallel with the axis of the tunnel model.
9. the pilot system of simulation shield tunnel compensation and grouting expansion form as claimed in claim 8, which is characterized in that described
The cross section of circumferential spiral stream guidance slot is v-shaped structure slot；The cross section of the longitudinal direction diversion trench is U-shaped structure slot.
10. the pilot system of simulation shield tunnel compensation and grouting expansion form as claimed in claim 9, which is characterized in that institute
The cross section for stating circumferential spiral stream guidance slot is opening width 3mm, depth 3mm；The cross section of the longitudinal direction diversion trench is opening
Width 4mm, depth 3mm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781968A (en) * | 2019-01-23 | 2019-05-21 | 安徽建筑大学 | A kind of test method of simulation shield tunnel compensation and grouting expansion form |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781968A (en) * | 2019-01-23 | 2019-05-21 | 安徽建筑大学 | A kind of test method of simulation shield tunnel compensation and grouting expansion form |
| CN109781968B (en) * | 2019-01-23 | 2024-05-03 | 安徽建筑大学 | Test method for simulating compensation grouting expansion form of shield tunnel |
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