CN206387648U - The experimental rig that a kind of simulation tunnel Blasting Excavation influences on peripheral conduits - Google Patents
The experimental rig that a kind of simulation tunnel Blasting Excavation influences on peripheral conduits Download PDFInfo
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- CN206387648U CN206387648U CN201720034180.4U CN201720034180U CN206387648U CN 206387648 U CN206387648 U CN 206387648U CN 201720034180 U CN201720034180 U CN 201720034180U CN 206387648 U CN206387648 U CN 206387648U
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- pipeline
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- liner supporting
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Abstract
The utility model discloses the experimental rig that a kind of simulation tunnel Blasting Excavation influences on peripheral conduits, including tunnel structure load testing machine, dynamite container, pipeline, liner supporting structure and measuring equipment；Measuring equipment includes foil gauge, acceleration transducer, data collecting instrument and computer.Because the utility model passes through the embedded foil gauge of loading casing and acceleration transducer in tunnel structure load testing machine, the vibration characteristics and pipeline dynamic response characteristic of peripheral conduits and rock mass can comprehensively be monitored, solve actual blasting procedure Tunnel Engineering mid-deep strata rock mass and Monitoring Pinpelines work hardly possible, the incomplete problem of measurement project.Because the utility model can be by controlling explosive charge, the quick-fried heart away from the influence factor such as, pipe parameter and pipeline space position, and the simulation of pipeline stress state under a variety of buried depths is realized by tunnel structure load testing machine, the security protection of speedy drivage and pipeline for subway tunnel provides technical support.
Description
Technical field
The utility model is related to Tunnel Engineering and subway engineering technical field, particularly a kind of simulation tunnel Blasting Excavation pair
The experimental rig of peripheral conduits influence.
Background technology
Subway is the effective measures for alleviating Urban Traffic Jam Based, but during constructing metro tunnel inevitably
The sedimentation and deformation of earth's surface and deep soil are induced, and then triggers peripheral conduits to occur excessive deformation and displacement, or even is caused
The disaster accident such as pipeline break or booster, it is serious to threaten people's life, the safety of property.To avoid such engineering project disaster accident,
Scholars have carried out extensive research, but the research that peripheral conduits influence is focused mostly in shield method on constructing tunnel and
Shallow burial hidden digging, and in Dalian, Qingdao isolith matter area, consider the factors such as fund, technology and safety, blasting procedure turns into ground
The main construction method in iron tunnel；However, it is substantially not enough on the correlative study achievement that blasting influences on peripheral conduits,
Research meanses are also not perfect, are confined to live explosion bulge test and numerical simulation more, and the former can not fully realize pipeline and deep layer
The monitoring of vibration characteristics and the pipeline dynamic response of rock mass, the latter can not take into full account the complexity of Practical Project parameter.Therefore,
It is necessary to study experimental rig and the method that a kind of simulation tunnel Blasting Excavation influences peripheral conduits, further discloses pipe Vibration
Dynamic characteristic and dynamic response characteristics, the interaction probed between rock mass and pipeline and pipeline damage mechanism, are subway tunnel
Speedy drivage and the security protection of pipeline provide technical support.
Utility model content
To solve the above mentioned problem that prior art is present, the utility model will design a kind of simulation tunnel Blasting Excavation to week
The experimental rig of side pipeline influence, can fully realize the vibration characteristics of pipeline and deep rock mass under different geological conditions and operating mode
And the monitoring of pipeline dynamic response, consider in Practical Project different explosive payloads, the quick-fried heart special away from, pipeline material parameter and mechanics
Property, the factor such as rock mass parameter, the simulation of rock mass and pipe vibration state in actual complex engineering is realized, for research buried pipeline
Vibration attenuation rule and dynamic response rule provide testing data, are peripheral conduits control safely in specific subway tunnel blasting excavation
The establishment of standard processed provides reference frame.
To achieve these goals, the technical solution of the utility model is as follows：A kind of simulation tunnel Blasting Excavation is to periphery
The experimental rig of pipeline influence, including tunnel structure load testing machine, dynamite container, pipeline, liner supporting structure and measurement dress
Put；
Described tunnel structure load testing machine is horizontal tunnel structure load testing machine；Tunnel structure load test
The loading casing of device is rectangular box, and the length and width of rectangular box is equal, be highly less than its length；Described loading case
Horizontal length direction of the vertical direction of body equivalent to the tunnel of Practical Project；
Described dynamite container is cylindrical dynamite container；Described dynamite container has multiple, and multiple dynamite containers are concentrated and are laid in out
Dig section center；Described excavated section is buried the border circular areas that side end surrounds by liner supporting structure；Described opens
Section center is dug to be buried the border circular areas center that side end surrounds by liner supporting structure；Described dynamite container passes through primacord
It is connected with priming device；
Described liner supporting structure is columnar structured, equivalent to the tunnel of Practical Project；Described liner supporting knot
Structure diameter parallel is in the forward and backward tank wall of loading casing；
Described pipeline is arranged in parallel in front of the axis of liner supporting structure, equivalent to the tunnel upper of Practical Project；
The axis of the axis of described pipeline and liner supporting structure parallel, vertical or oblique on geometric space position；
Forward and backward tank wall of the described conduit axis parallel to loading casing；
Described measuring equipment includes foil gauge, acceleration transducer, data collecting instrument and computer；Described pipeline edge
Axial uniform multiple measuring points, the pipeline external surface of each measuring point meet quick-fried side and carry on the back quick-fried side be respectively provided with a foil gauge and one plus
Velocity sensor；Acceleration analysis line is set in the rock mass at described liner supporting structure axis rear, acceleration analysis line with
Conduit axis is symmetrical on the plane where liner supporting structure axis, each to survey along the uniform multiple measuring points of acceleration analysis line
Point sets an acceleration transducer；Plane where described liner supporting structure axis is parallel to the loading forward and backward case of casing
Wall；Described foil gauge and acceleration transducer are connected by data wire with data collecting instrument respectively, described data collecting instrument
It is connected with computer；
Further, described dynamite container is 12~24mm of diameter, high 30~50mm cylindrical dynamite container, explosive wound packages
Dose is 2~8g, and Explosive ingredients are identical with actual explosive.
Further, described dynamite container quantity is determined by overall explosive payload, and described overall explosive payload is according to explosive payload
The likelihood ratio is determined.
Further, described primacord is drawn from liner supporting structure；Many primacords are bundled, with detonation
Device is connected.
Further, the measuring point quantity on described acceleration analysis line is identical with the measuring point quantity on pipeline, two phases
The distance between adjacent measuring point is identical；First measuring point on pipeline is vertical in same with first measuring point on acceleration analysis line
On line.
Further, the distance between two adjacent measuring points are 18-22mm on described pipeline.
Further, the acceleration transducer on described pipeline is arranged on the outside of foil gauge, and foil gauge is arranged on pipe
On the outer surface in road.
Compared with prior art, the utility model has the advantages that：
1st, because the utility model passes through the embedded foil gauge of loading casing in tunnel structure load testing machine and acceleration
Sensor is spent, the vibration characteristics and pipeline dynamic response characteristic of peripheral conduits and rock mass can comprehensively be monitored, is solved
Actual blasting procedure Tunnel Engineering mid-deep strata rock mass and Monitoring Pinpelines work are difficult, measure project incomplete problem.
2nd, due to the present invention can by controlling explosive charge, the quick-fried heart away from the influence factor such as, pipe parameter and pipeline space position,
The complexity of Practical Project parameter has been taken into full account, and pipeline under a variety of buried depths is realized by tunnel structure load testing machine
The simulation of stress state, is the further interaction mechanism disclosed between rock mass and pipeline, summarizes pipe vibration characteristic and dynamic
Force-responsive rule provides test basis and research method, and the security protection of speedy drivage and pipeline for subway tunnel is provided
Technical support.
3rd, because the utility model is to carry out experimental design based on the principle of similitude, therefore obtained result of the test is to actual work
The analysis of pipe vibration attenuation law and dynamic response characteristics has reference significance in journey.
Brief description of the drawings
Fig. 1 is testing program plane layout diagram of the present utility model.
Fig. 2 is testing program section layout diagram of the present utility model.
Fig. 3 is laying detailed schematic of the measuring instrument of the present utility model on pipeline.
Fig. 4 is Fig. 3 sectional view.
Fig. 5 is measurement system circuit connection diagram of the present utility model.
In figure：1st, casing is loaded, 2, dynamite container, 3, pipeline, 4, liner supporting structure, 5, foil gauge, 6, acceleration sensing
Device, 7, data collecting instrument, 8, computer.
Embodiment
The characteristics of below in conjunction with the accompanying drawings with specific embodiment to the utility model, further illustrates.
Embodiment one：
As Figure 1-5, the experimental rig that a kind of simulation tunnel Blasting Excavation influences on peripheral conduits, including tunnel structure
Load testing machine, dynamite container 2, pipeline 3, liner supporting structure 4 and measuring equipment；
Described tunnel structure load testing machine is horizontal tunnel structure load testing machine；Tunnel structure load test
The loading casing 1 of device is rectangular box, and the length and width of rectangular box is equal, be highly less than its length；Described loading
Horizontal length direction of the vertical direction of casing 1 equivalent to the tunnel of Practical Project；
Described dynamite container 2 is cylindrical dynamite container；Described dynamite container 2 has multiple, and multiple dynamite containers 2, which are concentrated, to be laid
In excavated section center；Described excavated section is buried the border circular areas that side end surrounds by liner supporting structure 4；It is described
Excavated section center buried the border circular areas center that side end surrounds by liner supporting structure 4；Described dynamite container 2 passes through
Primacord is connected with priming device；
Described liner supporting structure 4 is columnar structured, equivalent to the tunnel of Practical Project；Described liner supporting knot
The diameter parallel of structure 4 is in the forward and backward tank wall of loading casing 1；
Described pipeline 3 is arranged in parallel in front of the axis of liner supporting structure 4, equivalent on the tunnel of Practical Project
Side；
The axis of described pipeline 3 and the axis of liner supporting structure 4 are parallel, vertical or oblique on geometric space position
Hand over；The described diameter parallel of pipeline 3 is in the forward and backward tank wall of loading casing 1；
Described measuring equipment includes foil gauge 5, acceleration transducer 6, data collecting instrument 7 and computer 8；Described pipe
The uniform multiple measuring points vertically of road 3, meeting quick-fried side and carrying on the back quick-fried side for the outer surface of pipeline 3 of each measuring point is respectively provided with a foil gauge 5
With an acceleration transducer 6；Acceleration analysis line is set in the rock mass at the described axis rear of liner supporting structure 4, accelerated
Degree measurement line is symmetrical on the plane where the axis of liner supporting structure 4 with the axis of pipeline 3, uniformly many along acceleration analysis line
Individual measuring point, each measuring point sets an acceleration transducer 6；Plane where the described axis of liner supporting structure 4 parallel to
Load the forward and backward tank wall of casing 1；Described foil gauge 5 and acceleration transducer 6 are connected by data wire with data collecting instrument 7 respectively
Connect, described data collecting instrument 7 is connected with computer 8.
Further, described dynamite container 2 is 12~24mm of diameter, high 30~50mm cylindrical dynamite container, dynamite container 2
Explosive payload is 2~8g, and Explosive ingredients are identical with actual Explosive ingredients.
Further, the described quantity of dynamite container 2 is determined by overall explosive payload, and described overall explosive payload is according to explosive payload
The likelihood ratio is determined.
Further, described primacord is drawn from liner supporting structure 4；Many primacords are bundled, with rising
Quick-fried device connection.
Further, the measuring point quantity on described acceleration analysis line is identical with the measuring point quantity on pipeline 3, two phases
The distance between adjacent measuring point is identical；First measuring point on pipeline 3 hangs down with first measuring point on acceleration analysis line in same
On straight line.
Further, the distance between two adjacent measuring points are 18-22mm on described pipeline 3.
Further, the acceleration transducer 6 on described pipeline 3 is arranged on the outside of foil gauge 5, and foil gauge 5 is installed
On the outer surface of pipeline 3.
Test method of the present utility model, comprises the following steps：
A, determine the likelihood ratio
According to similar first theoretical, the similar second theoretical and Dynamic Similar Laws progress parameter designing, Practical Project is determined
The geometric similarity ratio of mesarcs physical dimension and experimental rig physical dimension is L, according to geometric similarity ratio, for pipeline 3 and lining
The sectional dimension and buried depth for building supporting construction 4 are designed by the 1/L of prototype size；Acceleration of gravity likelihood ratio Cg=1, density
Likelihood ratio Cρ=1, unit weight likelihood ratio Cγ=1, in the design of the physical and mechanical parameter of pipeline 3, to meet the modulus of elasticity of pipeline 3
Similar Design is principle：I.e. the modulus of elasticity of selected materials is the 1/L of prototype；Rock mass and the parameter of liner supporting structure 4 it is similar
Design, the likelihood ratio based on geometric similarity ratio and the unit weight likelihood ratio realizes Poisson's ratio, complete similar, the modulus of elasticity of angle of friction
It is designed by the 1/L of prototype Modulus of Elasticity of Rock Mass；Ensure the similar of similar explosive payload, power and STATIC RESPONSE simultaneously, specifically
Design principle is as follows：
A1, determine that the likelihood ratio of pipeline 3 is as follows：
Geometric similarity ratio：CL=L；
The modulus of elasticity likelihood ratio：CE=L；
A2, determine that rock mass and the likelihood ratio of liner supporting structure 4 are as follows：
Geometric similarity ratio：CL=L；
The unit weight likelihood ratio：Cγ=1；
Poisson's ratio, the angle of friction likelihood ratio：
The modulus of elasticity likelihood ratio：CE=L；
A3, determine that the explosive payload likelihood ratio is as follows：
Explosive payload likelihood ratio CQ=L3；
A4, determine that power and the STATIC RESPONSE likelihood ratio are as follows：
Stress similitude compares Cσ=L；
Speed likelihood ratio Cv=CL/Ct；
Time likelihood ratio Ct=Cs 0.5/Ca 0.5；
Displacement likelihood ratio Cs=CL；
Acceleration likelihood ratio Ca=1；
Measuring equipment on B, arrangement pipeline 3
Along the uniform multiple measuring points of the axis direction of pipeline 3, pacify in the outer surface Ying Bao sides of pipeline 3 of each measuring point and the quick-fried side of the back of the body
Fill a foil gauge 5 and an acceleration transducer 6；
C, laying experimental rig
C1, the similar rock mass materials of the short transverse placement in layers of loading casing 1 along tunnel structure load testing machine；Filling out
When building 3 design height of pipeline, the pipeline 3 for having laid measuring equipment is furnished according to the locus of test requirements document, by data
Line is drawn out to outside loading casing 1；
C2, simultaneously, plane where using the default axis of liner supporting structure 4 is plane of symmetry laying rock mass acceleration analysis
Line, arranges an acceleration transducer 6, and data wire is drawn out to outside loading casing 1 on each measuring point；When the axis of pipeline 3
When vertical with the axis of liner supporting structure 4, pipeline 3 and rock mass acceleration transducer 6 measure line for same filled height, once
Complete to lay；When the axis of pipeline 3 and when the diameter parallel of liner supporting structure 4 or oblique, then the laying of acceleration transducer 6 need to be with
The increase of filled height is persistently completed；
C3, when filling similar rock mass materials to excavated section design height, place liner supporting structure 4, liner supporting
The axis of structure 4 vertically, from liner supporting structure 4 draw by primacord, in excavated section center along liner supporting
The axis direction of structure 4 buries dynamite container 2, and primacord is drawn out to from liner supporting structure 4 outside loading casing 1 and filled with detonation
Put connection；
C4, continue to fill similar rock mass materials to loading the top of casing 1；By data wire respectively through data collecting instrument 7 and meter
Calculation machine 8 is connected；
D, collection test data
Before explosion is carried out, the setting of the debugging efforts and each channel parameters of data collecting instrument 7 is carried out；Ignite primacord
Start simultaneously at gathered data；When pipeline 3 and basicly stable rock mass, stop collection, preserve data；
E, processing test data
For research pipeline 3 and the vibration attenuation rule of rock mass, following processing is done to the data collected：By the pipeline of collection
3 acceleration-time curve ap(t) carry out once integration and obtain the vibration velocity attenuation curve of pipeline 3
By the obtained vibration velocity attenuation curve v of pipeline 3p(t) once integrated, obtain the displacement attenuation curve of pipeline 3
Similarly obtain the vibration velocity attenuation curve of rock mass
With displacement attenuation curve
To study the dynamic response characteristics of pipeline 3, using constitutive equation σ=E ε of pipeline 3, by the dynamic of the pipeline 3 of collection
Strain time history curve ε (t) is converted into the dynamic stress attenuation curve σ (t) of pipeline 3.
X-direction in figure is loads the left and right directions of casing 1, equivalent to the transverse horizontal direction in Practical Project tunnel；Y
Direction of principal axis is loads the vertical direction of casing 1, equivalent to the longitudinal horizontal direction in Practical Project tunnel, i.e. length direction；Z axis side
To the fore-and-aft direction for loading casing 1, equivalent to the vertical direction in Practical Project tunnel.
Embodiment two：
Tunnel structure load testing machine of the present utility model is horizontal " tunnel structure load test system " device.Tunnel
Structure load testing machine is made up of loading casing 1, operating desk, stabilizing hydraulic pressure loading system, oil cylinder and vertical beam articulated system.
The length and width for loading casing 1 is 150cm, is highly 30cm.Load the cover plate of casing 1 and reserve high-strength armoured-glass perspective
The deformation of window observation pipeline 3 and the rupture rule of rock mass, cover plate is moveable, and observing and nursing body becomes after the completion of convenient experiment
Shape destroys situation.Test apparatus possesses 12 60kN grades of high-precision hydraulic jack, model can be added by operating desk
Constraint is carried, with the boundary condition of Controlling model；Described tunnel structure load testing machine can realize a variety of edpth of tunnels and
Buried depth of pipeline and the quick-fried heart away from blast working simulation.
Dynamite container 2 described in the utility model is diameter 12mm, high 30mm cylindrical dynamite container, the explosive payload of dynamite container 2
For 2g；The distance between two adjacent measuring points are 20mm on described pipeline 3.
Remaining is identical with embodiment one.
The utility model is not limited to the present embodiment, any equivalent concepts in the technical scope that the utility model is disclosed
Or change, it is classified as protection domain of the present utility model.
Claims (7)
1. the experimental rig that a kind of simulation tunnel Blasting Excavation influences on peripheral conduits, it is characterised in that：Including tunnel structure plus
Carry experimental rig, dynamite container (2), pipeline (3), liner supporting structure (4) and measuring equipment；
Described tunnel structure load testing machine is horizontal tunnel structure load testing machine；Tunnel structure load testing machine
Loading casing (1) be rectangular box, the length and width of rectangular box is equal, be highly less than its length；Described loading case
Horizontal length direction of the vertical direction of body (1) equivalent to the tunnel of Practical Project；
Described dynamite container (2) is cylindrical dynamite container；Described dynamite container (2) has multiple, and multiple dynamite containers (2), which are concentrated, lays
In excavated section center；Described excavated section is buried the border circular areas that side end surrounds by liner supporting structure (4)；Institute
Buried the border circular areas center that side end surrounds by liner supporting structure (4) at the excavated section center stated；Described dynamite container
(2) it is connected by primacord with priming device；
Described liner supporting structure (4) is columnar structured, equivalent to the tunnel of Practical Project；Described liner supporting structure
(4) diameter parallel is in the forward and backward tank wall of loading casing (1)；
Described pipeline (3) is arranged in parallel in front of the axis of liner supporting structure (4), equivalent on the tunnel of Practical Project
Side；
The axis of described pipeline (3) and the axis of liner supporting structure (4) are parallel, vertical or oblique on geometric space position
Hand over；Described pipeline (3) diameter parallel is in the forward and backward tank wall of loading casing (1)；
Described measuring equipment includes foil gauge (5), acceleration transducer (6), data collecting instrument (7) and computer (8)；It is described
Pipeline (3) uniform multiple measuring points vertically, meeting quick-fried side and carrying on the back quick-fried side for pipeline (3) outer surface of each measuring point be respectively provided with one
Foil gauge (5) and an acceleration transducer (6)；Set and accelerate in the rock mass at described liner supporting structure (4) axis rear
Measurement line is spent, acceleration analysis line is symmetrical on the plane where liner supporting structure (4) axis with pipeline (3) axis, and edge adds
The uniform multiple measuring points of tachometric survey line, each measuring point sets an acceleration transducer (6)；Described liner supporting structure (4)
Plane where axis is parallel to loading casing (1) forward and backward tank wall；Described foil gauge (5) and acceleration transducer (6) are respectively
It is connected by data wire with data collecting instrument (7), described data collecting instrument (7) is connected with computer (8).
2. the experimental rig that a kind of simulation tunnel Blasting Excavation according to claim 1 influences on peripheral conduits, its feature
It is：Described dynamite container (2) is 12~24mm of diameter, high 30~50mm cylindrical dynamite container, and dynamite container (2) explosive payload is
2~8g, Explosive ingredients are identical with actual Explosive ingredients.
3. the experimental rig that a kind of simulation tunnel Blasting Excavation according to claim 1 influences on peripheral conduits, its feature
It is：Described dynamite container (2) quantity is determined that described overall explosive payload is true according to the explosive payload likelihood ratio by overall explosive payload
It is fixed.
4. the experimental rig that a kind of simulation tunnel Blasting Excavation according to claim 1 influences on peripheral conduits, its feature
It is：Described primacord is drawn from liner supporting structure (4)；Many primacords are bundled, and are connected with priming device.
5. the experimental rig that a kind of simulation tunnel Blasting Excavation according to claim 1 influences on peripheral conduits, its feature
It is：Measuring point quantity on described acceleration analysis line is identical with the measuring point quantity on pipeline (3), between two adjacent measuring points
Distance it is identical；First measuring point on pipeline (3) is with first measuring point on acceleration analysis line on same vertical line.
6. the experimental rig that a kind of simulation tunnel Blasting Excavation according to claim 1 influences on peripheral conduits, its feature
It is：The distance between upper two adjacent measuring points of described pipeline (3) are 18-22mm.
7. the experimental rig that a kind of simulation tunnel Blasting Excavation according to claim 1 influences on peripheral conduits, its feature
It is：Acceleration transducer (6) on described pipeline (3) is arranged on the outside of foil gauge (5), and foil gauge (5) is arranged on pipe
On the outer surface in road (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720034180.4U CN206387648U (en) | 2017-01-12 | 2017-01-12 | The experimental rig that a kind of simulation tunnel Blasting Excavation influences on peripheral conduits |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720034180.4U CN206387648U (en) | 2017-01-12 | 2017-01-12 | The experimental rig that a kind of simulation tunnel Blasting Excavation influences on peripheral conduits |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525570A (en) * | 2017-01-12 | 2017-03-22 | 大连交通大学 | Testing device and method for simulating influence of tunnel blasting excavation on surrounding pipelines |
| CN108061495A (en) * | 2017-10-24 | 2018-05-22 | 中国矿业大学 | A kind of breast wall apparatus and bore hole pressure test method |
| CN109507048A (en) * | 2019-01-08 | 2019-03-22 | 中国地质大学（武汉） | The pilot system and method that simulation tunnel blasting excavation influences existing lining cutting |
| CN111680350A (en) * | 2020-06-08 | 2020-09-18 | 中铁十四局集团大盾构工程有限公司 | Safety assessment method and device for shield tunnel and computer readable storage medium |
-
2017
- 2017-01-12 CN CN201720034180.4U patent/CN206387648U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525570A (en) * | 2017-01-12 | 2017-03-22 | 大连交通大学 | Testing device and method for simulating influence of tunnel blasting excavation on surrounding pipelines |
| CN108061495A (en) * | 2017-10-24 | 2018-05-22 | 中国矿业大学 | A kind of breast wall apparatus and bore hole pressure test method |
| CN108061495B (en) * | 2017-10-24 | 2018-08-28 | 中国矿业大学 | A kind of breast wall apparatus and bore hole pressure test method |
| CN109507048A (en) * | 2019-01-08 | 2019-03-22 | 中国地质大学（武汉） | The pilot system and method that simulation tunnel blasting excavation influences existing lining cutting |
| CN111680350A (en) * | 2020-06-08 | 2020-09-18 | 中铁十四局集团大盾构工程有限公司 | Safety assessment method and device for shield tunnel and computer readable storage medium |
| CN111680350B (en) * | 2020-06-08 | 2024-02-27 | 中铁十四局集团大盾构工程有限公司 | Safety evaluation method and device for shield tunnel and computer readable storage medium |
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