CN109003528A - A kind of the fining simulator and method of shield tunnel construction - Google Patents
A kind of the fining simulator and method of shield tunnel construction Download PDFInfo
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- CN109003528A CN109003528A CN201811144745.XA CN201811144745A CN109003528A CN 109003528 A CN109003528 A CN 109003528A CN 201811144745 A CN201811144745 A CN 201811144745A CN 109003528 A CN109003528 A CN 109003528A
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- shield tunnel
- steel bushing
- receiving port
- slot
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
Abstract
The invention discloses the fining simulators and method of a kind of shield tunnel construction, the model slot of model clay is filled with including an inside, for in model slot the model shielding machine of tunneling construction, front end dismountable link model shield machine rear end steel bushing, be connected to the thrustor of steel bushing tube rear end, model slot includes originating mouth and receiving port, and receiving port is provided with convex cover board；The analogy method avoids multinomial simulation steps from interfering with each other by separating shield machine driving with the process of pipe sheet assembling, synchronous grouting and successively simulating.The invention has the advantages that easy to operate, required test operator is few, and by shield machine tunneling construction, duct pieces of shield tunnel is assembled, synchronous grouting is completely separable, so as to each committed step of fine, orderly simulation shield tunnel construction overall process；The device for eliminating model shielding machine complexity saves model test cost；Relatively reliable and effective model test method is provided for shield tunnel construction research.
Description
Technical field
The invention belongs to shield tunnel technical fields, and in particular to a kind of fining simulator of shield tunnel construction and
Method.
Background technique
Shield tunnel construction process is complicated, and the factor for needing to study is numerous.It is therefore desirable to indoor model test is unfolded.
But the shield machine simulator in prior art needs while carrying out pipe sheet assembling, it is same to relate to slip casting etc., test operation people
Member is more, it is difficult to be tested without any confusion.Such as " one kind is used for simcity Subway Tunnel shield tunnel construction to patent of invention
Indoor model shield machine " model shielding machine disclosed in (publication number CN101398986A) has complicated pipe sheet assembling system
System, pushing tow jack device, and shield attitude adjustment can be carried out.Complicated device not only makes the manufacturing cost of model shielding machine
Height, and shield-tunneling construction multinomial committed step need and meanwhile carry out, as Shield Construction Method Used, model shield tunnel assembling construction,
Mortar depositing construction etc., required testing crew is more in model shielding machine work progress, and model shield tunnel is difficult to according to similar
Relationship is designed and assembly.Therefore, it is difficult to refine study multiple committed steps of shield tunnel construction.
Therefore, it is necessary to shield tunnel construction simulator and analogy method improve, overcome and be difficult to refine mould
Quasi- problem.
Summary of the invention
According to the deficiencies of the prior art described above, It is an object of the present invention to provide a kind of finings of shield tunnel construction
Simulator and method, the solution of the present invention by by shield machine driving separated with the process of pipe sheet assembling, synchronous grouting and according to
It is secondary to be simulated, it avoids multinomial simulation steps from interfering with each other, improves the simulation precision of shield tunnel construction.
The object of the invention realization is completed by following technical scheme:
A kind of fining simulator of shield tunnel construction, which is characterized in that the model of model clay is filled with including an inside
Slot, in the model slot model shielding machine of tunneling construction, front end removably connect the model shielding machine rear end
Steel bushing, be connected to the thrustor of the steel bushing tube rear end, the model slot includes originating mouth and receiving port, the reception
Mouth is provided with convex cover board；The fining simulator further includes model shield tunnel and simulation grouting device.
The model shielding machine front has the cutterhead of the cutting soil body, and the spiral shell that the dregs being cut in soil cabin is taken out of
Conveyer is revolved, the cutterhead and the screw conveyor all have corresponding power device, and can be to the power device
The testing element of output torque progress real-time measurement；The end in the model shield tunnel is provided with end fastener, the end
Fastener is also connected with a longitudinal limiting device.
The simulation grouting device includes sealing device and grouting equipment, and the sealing device includes being arranged in the reception
Sealing shroud between mouthful outer rim and the model shield tunnel ends, the diaphragm seal that the steel bushing front end is set, the note
The grouting pipe of slurry equipment is connected to the region between the sealing shroud and the diaphragm seal.
Several testing elements are filled in model clay in the model slot, the receiving port is additionally provided with dismountable described
Convex cover board, the mouth that originates are provided with the rack that originates connecting with the model slot, and the receiving port is provided with and the mould
The reception rack of type groove connection, the model slot is interior to be provided with by the bottom of position for drawing for model shielding machine design
Lead the guided way of the model shielding machine driving.
The length of the steel bushing is 50-80cm bigger than the length of the through direction in the model slot, the model shield
Machine, the steel bushing and the thrustor are connected by inner flange, are arranged at before starting to simulate Shield Construction Method Used
It is described to originate on rack.
A kind of analogy method for the fining simulator being related to any shield tunnel construction, which is characterized in that
The following steps are included:
Step 1: the installation of model slot fixes convex cover board in the receiving port position of the model slot, in the beginning of the model slot
Hair mouth fixation originates rack, and is sequentially connected model shielding machine, steel bushing, thrustor, the model in the rack that originates
The cutterhead of shield machine originates a mouthful position described in being placed in, and the thrustor is fixed with the rack that originates, to the above Job readiness
Model clay is filled after ready on the model slot and lays dependence test element；
Step 2: the model shielding machine is tunneled from the mouth that originates to the receiving port of the model slot, while to the model shield
Relevant parameter in structure machine work progress is measured, after the model shielding machine front end enters in the convex cover board, peace
Rack is received in attaching, and the convex cover board is removed；
Step 3: using steel bushing described in the thrustor pushing tow so that the model shielding machine moves on on the reception rack,
After the steel bushing front end exceeds the receiving port 25-40cm, the model shielding machine is removed；
Step 4: the model shield tunnel being put into the steel bushing from the receiving port, and carries out longitudinally fixed, then is pacified
Die-filling quasi- grouting device；
Step 5: shrinking the thrustor so that the front end of the steel bushing to be returned to and described originate mouth, while simulation note
Sizing device is to the region slip casting between the model clay in the model shield tunnel and the model slot, and to mortar depositing construction
Parameter measured；
Step 6: after injecting paste material solidification, taking out and remove the steel bushing, tested using the model shield tunnel.
The step 1 is the following steps are included: originate rack in described originate, and carry out with the model slot described in mouth erection
It is fixed；The receiving port is closed using the convex cover board, model shielding machine design passes through position in the model slot
Bottom sets up guided way；The model shielding machine, the steel bushing, the thrustor are sequentially connected and are erected at the beginning
It sends out on rack, the cutterhead of the model shielding machine is placed in the position for originating mouth；Model clay is filled simultaneously into the model slot
Embedded dependence test element.
In the step 2 the following steps are included: the model shielding machine under the promotion of the thrustor from the beginning
Hair mouth is tunneled to the convex cover board of the receiving port；The reception rack is set up in the receiving port, and is carried out with model slot
It is fixed, the convex cover board of the receiving port is removed；The thrustor pushes the model shielding machine to move forward to
On the reception rack.
The step 4 the following steps are included: the model shield tunnel is put into the steel bushing from the receiving port,
And the limiting device by connecting with the reception rack fixes model shield tunnel progress length travel, in the steel
Sleeve is located at the side installation diaphragm seal of the sealing shroud, and the grouting pipe of grouting equipment is connected to the sealing shroud and described
In region between diaphragm seal, sealing shroud is set between the outer rim and the model shield tunnel edge of the receiving port.
The invention has the advantages that easy to operate, required operator is few, and Shield Construction Method Used, duct pieces of shield tunnel are spelled
Dress, synchronous grouting are completely separable, so as to the committed step of fine, orderly simulation shield tunnel construction overall process；It saves
The device of model shielding machine complexity, saves model test cost；For shield tunnel construction research provide it is relatively reliable with it is effective
Model test method.
Detailed description of the invention
Fig. 1 is the structural schematic diagram in the embodiment of the present invention before simulation shield machine driving；
Fig. 2 is the attachment structure schematic diagram that shield machine, steel bushing thrustor are simulated in the embodiment of the present invention；
Fig. 3 is the structural schematic diagram in the embodiment of the present invention in simulation shield machine driving；
Fig. 4 is structural schematic diagram when simulation shield machine is tunneled to cap locations in the embodiment of the present invention；
Fig. 5 is to remove the structural schematic diagram after cover board in the embodiment of the present invention；
Structural schematic diagram when Fig. 6 is simulation shield machine ejection model slot in the embodiment of the present invention；
Fig. 7 is the structural schematic diagram removed after simulation shield machine in the embodiment of the present invention；
Fig. 8 is installation model shield tunnel and the structural schematic diagram after simulation grouting device in the embodiment of the present invention；
Partial enlarged view when Fig. 9 is setting simulation grouting device in the embodiment of the present invention；
Figure 10 is structural schematic diagram when simulating mortar depositing construction in the embodiment of the present invention；
Figure 11 is partial enlarged view when simulating mortar depositing construction in the embodiment of the present invention；
Figure 12 is that steel bushing is drawn out to structural schematic diagram when originating mouthful in the embodiment of the present invention；
Figure 13 is the structural schematic diagram completed after simulation mortar depositing construction in the embodiment of the present invention.
Specific embodiment
Feature of the invention and other correlated characteristics are described in further detail by embodiment below in conjunction with attached drawing, with
Convenient for the understanding of technical staff of the same trade:
Such as Fig. 1-13, in figure label 1-7 be respectively as follows: model slot 1, model clay 11, originate mouth 12, receiving port 13, originate rack 14,
Receive rack 15, convex cover board 16, model shielding machine 2, steel bushing 3, thrustor 4, model shield tunnel 5, end fastener 52,
Longitudinal limiting device 53, simulation grouting device 6, sealing shroud 61, diaphragm seal 62, grouting pipe 63, inner flange 7.
Embodiment: as shown in figures 1-13, the present embodiment is specifically related to a kind of fining simulator of shield tunnel construction
And method avoids multinomial mould by separating shield machine excavation with the process of pipe sheet assembling, pipeline slip casting and successively simulating
Quasi- step interferes with each other, and improves the simulation precision of shield tunnel construction.
As shown in figures 1-13, the fining simulator of shield tunnel construction includes the mould that an inside is filled with model clay 11
Type groove 1, the model shielding machine 2 for being tunneled in model slot 1, dismountable 2 rear end of link model shield machine in front end steel bushing
Cylinder 3, the thrustor 4 for being connected to 3 rear end of steel bushing, model slot 1 include originating mouth 12 and receiving port 13, are also set at receiving port 13
It is equipped with model shield tunnel 5 and simulation grouting device 6.
As shown in figures 1-13, model slot 1 is embedded in its inside plus poly (methyl methacrylate) plate using steel structure framework and is process,
Internal diameter 15-20 centimetres of receiving port bigger than 2 shield shell outer diameter of model shielding machine is detachably provided in the receiving port 13 of model slot 1
The convex cover board 16 being arranged at 13,16 depth of convex cover board being arranged at receiving port 13 are 20-30 centimetres.Model slot 1 originates
The internal diameter of mouth 12 is 3-5 centimetres bigger than 2 shield shell outer diameter of model shielding machine.3 outer diameter of steel bushing and 2 shield shell outer diameter phase of model shielding machine
Together, length is 60-80 centimetres bigger than the width of model slot 1.Originating rack 14 and receiving the height of rack 15 is according to model shield
Machine 2 in model slot 1 pass through driving position determine, originate rack 14 and receive rack 15 directly with model slot 1 into
Row connection.
As shown in figures 1-13, shield tunnel construction fining simulator analogy method the following steps are included:
Step 1: building simulation test environment, be sequentially connected model shielding machine 2, steel bushing 3, thrustor 4 and be erected at model
Slot 1 originates mouth 12；
Step 2: model shielding machine 2 tunnels the receiving port 13 to model slot 1 from mouth 12 is originated to form channel, while to shield machine
The parameter of construction is measured；
Step 3: 3 front end of steel bushing is ejected receiving port 13 by thrustor 4, removes model shielding machine 2；
Step 4: model shield tunnel 5 being put into steel bushing 3, simulation grouting device 6 is ridden upon at receiving port 13；
Step 5: the front end of steel bushing 3 is returned to and originates mouth 12 by thrustor 4, while simulating grouting device 6 to model shield
Region in tunnel 5 and model slot 1 between model clay 11 carries out slip casting, and measures to the parameter of mortar depositing construction；
Step 6: after injecting paste material solidification, taking out and remove steel bushing 3, the parameter in model shield tunnel 5 is measured.
As shown in Figs. 1-2, step 1 is the preparation process before model shielding machine 2 is tunneled, wherein relating generally to equipment
Build process.Rack 14 is originated in the erection of mouth 12 that originates of model slot 1, using convex cover board 16 by the receiving port 13 of model slot 1
Closing, model shielding machine 2, steel bushing 3, thrustor 4 be sequentially connected and be erected at originate on rack 14, model shielding machine 2
Cutterhead be placed in and originate 12 position of mouth, do not leaked out from originating mouth 12 when ensuring to fill model clay；Model is filled into model slot 1
Simultaneously testing element is arranged in soil 11, sets up guided way when filling model clay 11 and designing the bottom by position to model shielding machine,
It then proceedes to fill model clay 11.Receiving port 13 is additionally provided with dismountable convex cover board 16, originates mouth 12 and is provided with originating station
Frame 14, receiving port 13, which is provided with, receives rack 15, and model shielding machine design is provided with by the bottom of position in model slot 1 is same as
The guided way that pilot model shield machine 2 tunnels.Model shielding machine 2, steel bushing 3 and thrustor 4 are connected by inner flange 7.
Guided way both ends are separately connected the bottom for originating mouth 12 and receiving port 13, and model shielding machine 2 is under the action of guided way default
Section tunneled, avoid cost high model shielding machine 2 that form regulation system is set.Testing element includes that soil pressure is surveyed
Try element, stratum settlement testing element etc..
As in Figure 3-5, step 2 is the simulation tunneling process of model shielding machine 2, comprising the following steps: model shielding machine 2
From the driving of mouth 12 is originated to 16 position of convex cover board of receiving port 13 under the promotion of thrustor 4；It is connect in the erection of receiving port 13
Rack 15 is received, and the convex cover board 16 of receiving port 13 is removed；Thrustor 4 pushes model shielding machine 2 to be moved to reception rack
On 15；The test data of testing element in collection model slot 1 measures the parameter of shield machine construction.During this
Thrustor 4 is that model shielding machine 2 provides motive force, and steel bushing 3 also advances together in the advance of model shielding machine 2.Shield machine
The parameter of construction include but is not limited to cutter head torque, geostatic shield in soil cabin, jacking force, in work progress to stratum soil pressure
And the data such as influence of formation displacement.
As shown in fig. 6-7, step 3 is 2 receive process of model shielding machine, complete in 4 pushing tow drag shield machine 2 of thrustor
Full abjection model slot 1, and 3 front end of steel bushing exceeds 25-40 centimetres of the side of model slot 1, releases steel bushing 3 and model again at this time
The connection of shield machine 2, then model shielding machine 2 is removed.
As Figure 8-9, step 4 is the preparation process simulated before slip casting.Including by model shield tunnel 5 from reception
Mouth 13 is put into steel bushing 3 and fixes its position.It is arranged between 5 edge of outer rim and model shield tunnel of receiving port 13 close
Big envelope 61 is installed diaphragm seal 62 in the side that steel bushing 3 is located at sealing shroud 61, the grouting pipe 63 of grouting equipment is connected to close
In region between big envelope 61 and diaphragm seal 62.Model shield tunnel 5 is being completed in advance by similarity relation design,
5 end of model shield tunnel is provided with end fastener 52, and end fastener 52 is also connected with a longitudinal limiting device 53.End fastener 52
It is the focusing surface in model shield tunnel 5, longitudinal limiting device 53 can be using the reaction frame being arranged on reception rack 15, counter-force
Frame connects end fastener 52 by wirerope, and then steel bushing 3 is mutually fixed with the position for receiving rack 15 in the longitudinal direction, prevents
Model shield tunnel 5 is carried over when steel bushing 3 is extracted out.Simulating grouting device 6 includes sealing device and grouting equipment, sealing device
Including be arranged between 5 end of 13 outer rim of receiving port and model shield tunnel sealing shroud 61, the close of 3 front end of steel bushing is set
Mounting 62, the region between 63 communication seals of the grouting pipe set 61 and diaphragm seal 62 of grouting equipment.
As shown in figs. 10-12, step 5 is the process of simulation slip casting, wherein steel bushing 3 is reversely drawn back using thrustor 4,
Slip casting is carried out in 3 front end of steel bushing simultaneously, during steel bushing 3 is drawn back, between sealing shroud 61 and diaphragm seal 62 is model clay
Gap is filled up by grouting equipment in gap between 11 and model shield tunnel 5.At this time to grouting pressure, slip casting during
Soil pressure and formation displacement, the deformation of shield tunnel in stratum etc. are measured.Diaphragm seal 62 to 3 front end of steel bushing reaches
When 1 wall position of model slot, pause steel bushing 3 is extracted out, waits injecting paste material solidification.
As shown in figure 13, step 6 is the processing step completed after simulation slip casting, including after injecting paste material solidifies,
Steel bushing 3 is extracted out backward again, until the completely out model slot 1 of steel bushing 3.It is done using the model shield tunnel 5 constructed
Correlation model test, to shield tunnel and week phase during the influence, Subway Train Operation in Existed Subway including top preloading to shield tunnel
The influence etc. of surrounding environment.
The present embodiment has the advantages that easy to operate, and required operator is few, by Shield Construction Method Used, shield tunnel
Pipe sheet assembling, synchronous grouting are completely separable, so as to the key step of fine, orderly simulation shield tunnel construction overall process
Suddenly；The complicated device of model shielding machine 2 is saved, model test cost is saved；It provides for shield tunnel construction research and more may be used
By with effective model test method.
Claims (9)
1. a kind of fining simulator of shield tunnel construction, which is characterized in that be filled with the mould of model clay including an inside
Type groove, after the model shielding machine of tunneling construction, front end removably connect the model shielding machine in the model slot
The steel bushing at end, the thrustor for being connected to the steel bushing tube rear end, the model slot includes originating mouth and receiving port, described to connect
Closing in is provided with convex cover board；The fining simulator further includes model shield tunnel and simulation grouting device.
2. a kind of fining simulator of shield tunnel construction according to claim 1, which is characterized in that the model
Shield machine front has the cutterhead of the cutting soil body, and the screw conveyor that the dregs being cut in soil cabin is taken out of, the knife
Disk and the screw conveyor all have corresponding power device, and can carry out to the output torque of the power device real-time
The testing element of measurement；The end in the model shield tunnel is provided with end fastener, and it is longitudinal that the end fastener is also connected with one
Limiting device.
3. a kind of fining simulator of shield tunnel construction according to claim 1, which is characterized in that the simulation
Grouting device includes sealing device and grouting equipment, and the sealing device includes being arranged in the receiving port outer rim and the model
Sealing shroud between shield tunnel end, the diaphragm seal that the steel bushing front end is set, the grouting pipe of the grouting equipment
It is connected to the region between the sealing shroud and the diaphragm seal.
4. a kind of fining simulator of shield tunnel construction according to claim 1, which is characterized in that the model
Several testing elements are filled in model clay in slot, the receiving port is additionally provided with dismountable convex cover board, the beginning
Hair mouth is provided with the rack that originates connecting with the model slot, and the receiving port is provided with the receiving platform connecting with the model slot
Frame, the model slot is interior to be provided with by the bottom of position for guiding the model shielding machine for model shielding machine design
The guided way of driving.
5. a kind of fining simulator of shield tunnel construction according to claim 4, which is characterized in that the steel bushing
The length of cylinder is 50-80cm bigger than the length of the through direction in the model slot, the model shielding machine, the steel bushing and institute
It states thrustor to connect by inner flange, is arranged at described originate on rack before starting to simulate Shield Construction Method Used.
6. a kind of analogy method for the fining simulator for being related to shield tunnel construction as claimed in any one of claims 1 to 5,
Characterized by comprising the following steps:
Step 1: the installation of model slot fixes convex cover board in the receiving port position of the model slot, in the beginning of the model slot
Hair mouth fixation originates rack, and is sequentially connected model shielding machine, steel bushing, thrustor, the model in the rack that originates
The cutterhead of shield machine originates a mouthful position described in being placed in, and the thrustor is fixed with the rack that originates, to the above Job readiness
Model clay is filled after ready on the model slot and lays dependence test element；
Step 2: the model shielding machine is tunneled from the mouth that originates to the receiving port of the model slot, while to the model shield
Relevant parameter in structure machine work progress is measured, after the model shielding machine front end enters in the convex cover board, peace
Rack is received in attaching, and the convex cover board is removed；
Step 3: using steel bushing described in the thrustor pushing tow so that the model shielding machine moves on on the reception rack,
After the steel bushing front end exceeds the receiving port 25-40cm, the model shielding machine is removed；
Step 4: the model shield tunnel being put into the steel bushing from the receiving port, and carries out longitudinally fixed, then is pacified
Die-filling quasi- grouting device；
Step 5: shrinking the thrustor so that the front end of the steel bushing to be returned to and described originate mouth, while simulation note
Sizing device is to the region slip casting between the model clay in the model shield tunnel and the model slot, and to mortar depositing construction
Parameter measured；
Step 6: after injecting paste material solidification, taking out and remove the steel bushing, tested using the model shield tunnel.
7. a kind of analogy method of the fining simulator of shield tunnel construction according to claim 6, feature exist
In the step 1 is the following steps are included: originate rack described in mouth erection in described originate, and be fixed with the model slot；
The receiving port is closed using the convex cover board, the bottom shelf that model shielding machine design passes through position in the model slot
If guided way；The model shielding machine, the steel bushing, the thrustor are sequentially connected and are erected at and described originates rack
On, the cutterhead of the model shielding machine is placed in the position for originating mouth；Model clay and embedded phase are filled into the model slot
Close testing element.
8. a kind of analogy method of the fining simulator of shield tunnel construction according to claim 6, feature exist
In the following steps are included: the model shielding machine originates mouth pick from described under the promotion of the thrustor in the step 2
It proceeds in the convex cover board of the receiving port；The reception rack is set up in the receiving port, and is fixed with model slot, it will
The convex cover board of the receiving port is removed；The thrustor pushes the model shielding machine to move forward to the reception
On rack.
9. a kind of analogy method of the fining simulator of shield tunnel construction according to claim 6, feature exist
In the step 4 is the following steps are included: the model shield tunnel is put into the steel bushing from the receiving port, and is led to
It crosses the limiting device connecting with the reception rack to fix model shield tunnel progress length travel, in the steel bushing
Diaphragm seal is installed positioned at the side of the sealing shroud, the grouting pipe of grouting equipment is connected to the sealing shroud and the sealing
In region between piece, sealing shroud is set between the outer rim and the model shield tunnel edge of the receiving port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144745.XA CN109003528A (en) | 2018-09-29 | 2018-09-29 | A kind of the fining simulator and method of shield tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811144745.XA CN109003528A (en) | 2018-09-29 | 2018-09-29 | A kind of the fining simulator and method of shield tunnel construction |
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| Publication Number | Publication Date |
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| CN109003528A true CN109003528A (en) | 2018-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811144745.XA Pending CN109003528A (en) | 2018-09-29 | 2018-09-29 | A kind of the fining simulator and method of shield tunnel construction |
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| Country | Link |
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| CN (1) | CN109003528A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826633A (en) * | 2019-03-06 | 2019-05-31 | 青岛理工大学 | Existing shield tunnel simulator and analogy method are worn under a kind of shield machine |
| CN109949682A (en) * | 2019-04-15 | 2019-06-28 | 华东交通大学 | A kind of brief test device and test method for simulating shield tunnel construction |
| CN113267364A (en) * | 2021-07-14 | 2021-08-17 | 四川藏区高速公路有限责任公司 | Model simulation test device for tunnel under-passing existing tunnel |
| CN113482647A (en) * | 2021-08-30 | 2021-10-08 | 中铁隧道局集团有限公司 | Miniature development machine system for test |
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| CN109826633A (en) * | 2019-03-06 | 2019-05-31 | 青岛理工大学 | Existing shield tunnel simulator and analogy method are worn under a kind of shield machine |
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| CN113482647A (en) * | 2021-08-30 | 2021-10-08 | 中铁隧道局集团有限公司 | Miniature development machine system for test |
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