CN208476921U - A kind of ponding Frozen-thawed cycled effect simulation of permafrost region tunnel-liner behind part, monitoring device - Google Patents
A kind of ponding Frozen-thawed cycled effect simulation of permafrost region tunnel-liner behind part, monitoring device Download PDFInfo
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- CN208476921U CN208476921U CN201820150680.9U CN201820150680U CN208476921U CN 208476921 U CN208476921 U CN 208476921U CN 201820150680 U CN201820150680 U CN 201820150680U CN 208476921 U CN208476921 U CN 208476921U
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Abstract
A kind of ponding Frozen-thawed cycled effect simulation of permafrost region tunnel-liner behind part, monitoring device, to provide relatively reliable test data steadily in the long term for the design in permafrost region tunnel, construction and operation phase, to better ensure that the safety and economy of permafrost region tunnel structure.Including main body chamber, environmental chamber, detection device and Frozen-thawed cycled simulation system；The environmental chamber is set in main body chamber, the setting of tunnel lining structure model is placed in environmental chamber, the local flooding simulation device in lining cutting behind is set on tunnel lining structure model outer wall, and the local flooding simulation device in lining cutting behind feeds pipeline by ponding and is connected with the ponding device for supplying hung on main body test box outer wall；In filling country rock simulation material outside tunnel lining structure model in the environmental chamber；The component of the detection device is embedded in country rock simulation material, is pasted on the inside and outside wall of tunnel lining structure model；The host of the Frozen-thawed cycled simulation system is set to outside main body chamber, and air supply device is set to the top of main body chamber side wall.
Description
Technical field
The utility model relates to traffic tunnel design and construction field of engineering technology, in particular to a kind of permafrost region tunnel lining
Build local ponding Frozen-thawed cycled effect simulation behind, monitoring device.
Background technique
With building more and more with built permafrost region tunnel quantity, operation phase freezing damage in tunnel problem is also more universal.Freeze
The tunnel Tu Qu operation phase freeze injury problem main forms are tunnel-liner frost heave cracking, ice is hung in infiltration, ditch is freezed.Lining cutting
Frost heave cracking will cause tunnel durability, safety seriously reduces, and active time is sharply reduced；Ice is hung in infiltration, ditch freezes to ask
Topic keeps accumulated ice in tunnel serious, and headroom reduces, and can not drive a vehicle.Research achievement thinks that the local ponding in lining cutting behind is anti-both at home and abroad at present
Freeze thawing cyclic process is to cause one of the principal element of operation phase freezing damage in tunnel problem again.
People serve as a contrast tunnel under tunnel-liner behind different ponding position, ponding magnitude and repeated freeze-thaw cycle action condition
Block structure stress feature, failure mode shortage are understood in depth, and tunnel-liner behind ponding alimentation mechanism is still not clear.Pass through
Establish tunnel-liner local ponding Frozen-thawed cycled effect simulation behind, monitoring device carries out tunnel-liner local ponding freeze thawing behind
Tunnel structure mechanical characteristic model test under cycling condition obtains tunnel lining structure in different ponding positions, ponding with analysis
The stress characteristic of tunnel lining structure, failure mode and tunnel-liner behind ponding under the conditions of magnitude and freezing-thawing cycles
Recharge Mechanism, to improving permafrost region structure design of tunnel system；Optimize permafrost region tunnel structure guarded drainage, thermal retardation form；To freeze
Native area's tunnel structure problem provides test data, has a very important significance.
Existing domestic and foreign scholars study research in terms of permafrost region tunnel structure, and the method mainly used has theory deduction, number
It is worth simulation, laboratory test etc..Wherein, theory deduction, method of numerical simulation are mainly in country rock Frost heaving mechanism, frost heave sheet
The research of the contents such as structure model, permafrost region country rock distribution law of temperature field, for the local ponding Frozen-thawed cycled in tunnel-liner behind
Effect aspect research also not system, comprehensively.Often assumed condition limits excessive theory deduction research means, and correlated variables changes
Change will lead to derivation result can not explicit expression, as a result also excessively idealize, it is limited to practice of construction directive significance；Numerical simulation
Although relatively reducing calculation amount, save and calculate the time, simulation process is based on theory, and there are analog results can not be with reality
The deficiency that situation matches.Indoor model test is that tunnel scene is carried out reduced scale real simulation, has and coincide with actual conditions
Degree is high, feature at low cost, is to study the ideal research method of permafrost region tunnel structure.
Frost heave is made under the mainly fixed moisture content wall rock condition of existing permafrost region tunnel structure frost heave action simulation system
With simulation system, by adjusting country rock material moisture content, frost heave action is for tunnel under the conditions of realizing different surrounding rock grade, moisture content
The influence of road structure only accounts for specific country rock moisture content by not freezing to freezing single process of frost heave for the shadow of tunnel structure
It rings.Existing method and system are commonly used in permafrost area vcehicular tunnel and railway tunnel, can not consider seasonal frozen soil region tunnel
Cyclic process of the road by Tunnel Lining Cracks development and change under the influence of frost heave ringing repeatedly, and integrally freeze compared to country rock
Bulk value, local ponding position frost heave action magnitude is larger behind for lining cutting, and frost heave load assignment is uneven, is easier to make liner structure
Generate stress concentration phenomenon, cause tunnel-liner local location crack, damage of lining form also with actual tunnel failure mode compared with
It is identical.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of permafrost region tunnel-liner local ponding freeze thawing behind
Ringing simulation, monitoring device, with more preferable simulation difference hydrogeologic condition and including seasonal frozen soil region, permafrost
The different surrounding rock rank in area, realize under different hydrogeologic conditions tunnel-liner behind different ponding positions, ponding magnitude with
And when repeated freeze-thaw cycle effect, the simulation of tunnel-liner stress characteristic, failure mode is design, the construction in permafrost region tunnel
There is provided relatively reliable test data steadily in the long term with the operation phase, thus better ensure that permafrost region tunnel structure safety and
Economy.
It is as follows that the utility model solves technical method used by above-mentioned technical problem:
A kind of permafrost region tunnel part ponding Frozen-thawed cycled effect simulation of the utility model, monitoring device, it is characterized in that:
Including main body chamber, environmental chamber, detection device and Frozen-thawed cycled simulation system；The environmental chamber is set to main body
In chamber, the setting of tunnel lining structure model is placed in environmental chamber, and lining is arranged on tunnel lining structure model outer wall
Local flooding simulation device behind is built, local flooding simulation device feeds pipeline by ponding and hangs on main body examination behind for lining cutting
Ponding device for supplying on tryoff outer wall is connected；In filling country rock mould outside tunnel lining structure model in the environmental chamber
Quasi- material；The component of the detection device is embedded in country rock simulation material, is pasted on the inside and outside of tunnel lining structure model
On wall；The host of the Frozen-thawed cycled simulation system is set to outside main body chamber, and air supply device is set to main body chamber
The top of side wall.
The beneficial effects of the utility model are mainly reflected in following aspects:
(1) experimental rig can realize simulation varying environment temperature, different freezing-thawing cycles, different permafrost region types,
Under the conditions of different tunnel cross-section forms and size, tunnel-liner behind ponding is special to tunnel lining structure stress at ice frost heave action
Sign, failure mode.By adjusting high/low temperature difference and ascending, descending in Frozen-thawed cycled simulation system in Frozen-thawed cycled environment simulator
Warm cycle-index, to realize above-mentioned simulation.
(2) according to lining cutting behind different ponding position, water accumulating volume and ponding distribution form, using high-intensitive sponge, production
Tunnel-liner behind flooding simulation material, to realize lining cutting different ponding position, water accumulating volume and ponding distribution form condition behind
Under, influence of the ponding at ice frost heave action to tunnel-liner stress characteristic, failure mode.
(3) different surrounding rock grade, difference can be simulated by the match ratio of country rock simulation material in modification main body chamber
Under the conditions of moisture content, influence of the tunnel-liner behind ponding at ice frost heave action to tunnel-liner stress characteristic, failure mode.
(4) by adjusting the cooperation of tunnel-liner simulation material when shape, different tunnel-liner section shapes can be simulated
Under the conditions of formula, different tunnel cross-section sizes, different strength of lining, tunnel-liner behind ponding is at ice frost heave action to tunnel-liner
The influence of stress characteristic, failure mode.
Detailed description of the invention
This specification includes following three width attached drawing:
Fig. 1 is a kind of permafrost region tunnel-liner of the utility model local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
The front view set；
Fig. 2 is a kind of permafrost region tunnel-liner of the utility model local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
The left view set；
Fig. 3 is a kind of permafrost region tunnel-liner of the utility model local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
The top view set.
Main component and corresponding label: main body chamber 1, environmental chamber 2, air supply device 3, freeze thawing are shown in figure
Circulating analog system 4, tunnel lining structure model 5, local flooding simulation device 6, ponding supply pipeline 7 are closed behind for lining cutting
Door 8, ponding device for supplying 9, environmental chamber monitors component 10, main body chamber monitors component 11, country rock simulation material
12。
Specific embodiment
The present invention will be further described With reference to embodiment, and specific embodiment is to the utility model
The further explanation of principle, does not limit the utility model in any way, and technology same or like with the utility model does not have
Range beyond the utility model protection.
Referring to FIG. 1, FIG. 2 and FIG. 3, the utility model a kind of permafrost region tunnel part ponding Frozen-thawed cycled effect simulation,
Monitoring device includes main body chamber 1, environmental chamber 2, detection device and Frozen-thawed cycled simulation system 4.The environmental simulation
Case 2 is set in main body chamber 1, and the setting of tunnel lining structure model 5 is placed in environmental chamber 2, tunnel lining structure
Lining cutting local flooding simulation device 6 behind is set on 5 outer wall of model, and local flooding simulation device 6 is mended by ponding behind for lining cutting
It is connected to pipeline 7 with the ponding device for supplying 9 hung on 1 outer wall of main body chamber.In tunnel in the environmental chamber 2
Country rock simulation material 12 is loaded outside liner structure model 5.The component of the detection device is embedded in country rock simulation material 12,
It is pasted on the inside and outside wall of tunnel lining structure model 5.The host of the Frozen-thawed cycled simulation system 4 is set to main body test
Outside case 1, air supply device 3 is set to the top of 1 side wall of main body chamber.
The country rock simulation material 12 may be selected different material and match ratio and simulate different Grades of Surrounding Rock, country rock simulation
Material 12 includes gypsum, water, quartz sand and blanc fixe etc..Mono- layer of every 15cm is allocated as being loaded at least twice when filling, often
Interlayer shaving after secondary filling, avoids being layered, and then manually vibrate 20 bulk density for making country rock simulation material 12 reach demand
It is required that.
The tunnel lining structure model 5 can be using different tunnel cross-section sizes and different materials cooperation production.?
Select different tunnel cross-section size and material mix proportion to simulate different Tunnel structures, size, including the shape of a hoof, circle,
Stalk shape, light section, middle section, big cross section, extra-large cross-section etc..The making material of tunnel lining structure model 5 include gypsum,
Water, quartz sand etc., according to the shape for pouring into mold after certain match ratio mix demand being made.
Local flooding simulation device 6 is using high-intensitive sponge production behind for the lining cutting, outside tunnel lining structure model 5
Wall fits closely, to realize the simulation of simulation tunnel-liner behind different ponding position, ponding magnitude.And product is fixed in its center
7 end of water supply tube road, ponding feed and wrap up thermal insulation material outside pipeline 7.
The ponding device for supplying 9 is made of electronics water monitoring device, water tank, make-up pipe, is supervised by electronics water
It surveys device and automatically records water situation of change in water tank, monitor ponding alimentation process to realize.
Referring to Fig.1, the main body chamber 1 is welded to form by steel plate, and box top and box body bolt consolidate, and facilitates folding
Load country rock simulation material 12, tunnel lining structure model 5, lining cutting local flooding simulation device 6 behind.Box top is by test
Monitoring, ponding supply demand open up through-hole 11, and make-up pipe, monitoring cable is facilitated to draw.2 inner wall of environmental chamber and bottom
It is respectively provided with certain thickness insulating layer on wall, openable sealed door 8 is set on the side wall of side.
The host of the Frozen-thawed cycled simulation system 4 is made of large-scale program control type high/low temperature air conditioner and control system.
High/low temperature by setting host controls program and heating and cooling cycle-index, is heated up, is dropped as required by air supply device 3
Warm process.
The monitoring device includes earth pressure gauge, temperature detecting sensor, strain rosette, numerical control displacement acquisition instrument, electronic water
Measure monitoring device, static strain Acquisition Instrument or dynamic collecting instrument.Soil pressure is carried out by monitoring scheme inside country rock simulation material 12
The arrangement of power meter, temperature sensor carries out strain rosette, numerical control position by monitoring scheme on 5 inner wall of tunnel lining structure model, outer wall
Move the arrangement of Acquisition Instrument.
By main body chamber 1, country rock simulation material 12, tunnel lining structure model 5, lining cutting, part is long-pending behind as desired
After setting completed, the master of Frozen-thawed cycled simulation system 4 is arranged in water installations 6, ponding supply pipeline 7, ponding device for supplying water tank 9
The control program of machine, air supply device 3 are started to work.As 2 temperature of environmental chamber reduces, local flooding simulation is filled behind for lining cutting
6 formation ponding are set into ice process, tunnel lining structure model 5 is acted on by local ponding frost-heave force；And then with environmental simulation
2 temperature of case gradually rises, and local ponding disappears at ice position frost heave action behind for lining cutting, in ponding device for supplying water tank 9
Water feeds pipeline 7 to lining cutting local water collecting device flowing behind by ponding, generates ponding and feeds phenomenon；When environmental chamber 2
When temperature reduces again, local 6 frost heave action of flooding simulation device occurs again behind for lining cutting, so on circulate, finally
It forms Frozen-thawed cycled and acts on lower lining cutting local ponding position frost heave action behind.
It compared with the conventional method can more preferable simulation difference hydrogeologic condition and include seasonal compared with, the utility model
Permafrost region, permafrost area different surrounding rock rank, realize under different hydrogeologic conditions tunnel-liner different ponding behind
When position, ponding magnitude and repeated freeze-thaw cycle act on, the simulation of tunnel-liner stress characteristic, failure mode is permafrost region
The design in tunnel, construction and operation phase provide relatively reliable test data steadily in the long term, to better ensure that permafrost region
The safety and economy of tunnel structure.
The above only explains through diagrams, and part ponding freeze thawing follows a kind of permafrost region tunnel-liner of the utility model behind
Ring acts on some principles of simulation, monitoring device, is not intended to the specific structure shown in being confined to the utility model and described
In the scope of application, therefore all corresponding modifications that may be utilized and equivalent, it belongs to the utility model and is applied
The scope of the patents.
Claims (9)
1. a kind of permafrost region tunnel-liner local ponding Frozen-thawed cycled effect simulation behind, monitoring device, it is characterized in that: including master
Body chamber (1), environmental chamber (2), detection device and Frozen-thawed cycled simulation system (4)；Environmental chamber (2) setting
In main body chamber (1), tunnel lining structure model (5) setting is placed in environmental chamber (2), tunnel lining structure mould
Lining cutting local flooding simulation device (6) behind is set on type (5) outer wall, and local flooding simulation device (6) passes through product behind for lining cutting
Water supply tube road (7) is connected with the ponding device for supplying (9) hung on main body chamber (1) outer wall；The environmental simulation
Country rock simulation material (12) is loaded outside in tunnel lining structure model (5) in case (2)；The component of the detection device is embedded in
In country rock simulation material (12), it is pasted on the inside and outside wall of tunnel lining structure model (5)；The Frozen-thawed cycled simulation system
(4) host is set to main body chamber (1) outside, and air supply device (3) is set to the top of main body chamber (1) side wall.
2. a kind of permafrost region tunnel-liner as described in claim 1 local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
Set, it is characterized in that: the country rock simulation material (12) load when every mono- layer of 15cm be allocated as being loaded at least twice, every time load
After interlayer shaving, avoid being layered, the bulk density requirement for making country rock simulation material (12) reach demand of then manually vibrating 20 times.
3. a kind of permafrost region tunnel-liner as described in claim 1 local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
It sets, it is characterized in that: the tunnel lining structure model (5) is using different tunnel cross-section sizes and different materials cooperation production.
4. a kind of permafrost region tunnel-liner as described in claim 1 local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
It sets, it is characterized in that: local flooding simulation device (6) is using high-intensitive sponge production behind for the lining cutting, with tunnel lining structure
Model (5) outer wall fits closely, and fixes ponding in its center and feed pipeline (7) water outlet, and ponding feeds packet outside pipeline (7)
Wrap up in thermal insulation material.
5. a kind of permafrost region tunnel-liner as described in claim 1 local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
It sets, it is characterized in that: the ponding device for supplying (9) is made of electronics water monitoring device, water tank, make-up pipe, by electronics
Water quantity monitoring device automatically records water situation of change in water tank, monitors ponding alimentation process to realize.
6. a kind of permafrost region tunnel-liner as claimed in claim 5 local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
It sets, it is characterized in that: the main body chamber (1) is welded to form by steel plate, box top and box body bolt are consolidated, and folding is facilitated to fill out
Fill country rock simulation material (12), tunnel lining structure model (5), lining cutting local flooding simulation device (6) behind；Box top is pressed
Test monitoring, ponding supply demand open up through-hole (11), and make-up pipe, monitoring cable is facilitated to draw.
7. a kind of permafrost region tunnel-liner as claimed in claim 5 local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
It sets, it is characterized in that: being respectively provided with certain thickness insulating layer on the environmental chamber (2) inner wall and bottom wall, is set on the side wall of side
Set openable sealed door (8).
8. a kind of permafrost region tunnel-liner as described in claim 1 local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
It sets, it is characterized in that: the host of the Frozen-thawed cycled simulation system (4) is by large-scale program control type high/low temperature air conditioner and control system
Composition.
9. a kind of permafrost region tunnel-liner as described in claim 1 local ponding Frozen-thawed cycled effect simulation behind, monitoring dress
It sets, it is characterized in that: the monitoring device includes earth pressure gauge, temperature detecting sensor, strain rosette, numerical control displacement acquisition instrument, electricity
Sub- water quantity monitoring device, static strain Acquisition Instrument or dynamic collecting instrument.
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Cited By (4)
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| CN108181446A (en) * | 2018-01-29 | 2018-06-19 | 中铁二院工程集团有限责任公司 | A kind of permafrost region tunnel-liner local ponding Frozen-thawed cycled effect behind is simulated, monitoring device |
| CN110108861A (en) * | 2019-05-30 | 2019-08-09 | 西北农林科技大学 | A kind of auxiliary hot pin indoor model test device of research canal base day heat |
| CN110375804A (en) * | 2019-07-17 | 2019-10-25 | 昆明理工大学 | A kind of monitoring device for constructing tunnel |
| CN111766369A (en) * | 2020-07-01 | 2020-10-13 | 中国科学院地质与地球物理研究所 | Visual system for simulating deep roadway deformation under underground water freeze-thaw cycle effect |
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- 2018-01-29 CN CN201820150680.9U patent/CN208476921U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108181446A (en) * | 2018-01-29 | 2018-06-19 | 中铁二院工程集团有限责任公司 | A kind of permafrost region tunnel-liner local ponding Frozen-thawed cycled effect behind is simulated, monitoring device |
| CN110108861A (en) * | 2019-05-30 | 2019-08-09 | 西北农林科技大学 | A kind of auxiliary hot pin indoor model test device of research canal base day heat |
| CN110108861B (en) * | 2019-05-30 | 2022-02-15 | 西北农林科技大学 | Indoor model test device for researching channel-based natural auxiliary heating rod |
| CN110375804A (en) * | 2019-07-17 | 2019-10-25 | 昆明理工大学 | A kind of monitoring device for constructing tunnel |
| CN110375804B (en) * | 2019-07-17 | 2021-03-02 | 昆明理工大学 | Monitoring device for tunnel construction |
| CN111766369A (en) * | 2020-07-01 | 2020-10-13 | 中国科学院地质与地球物理研究所 | Visual system for simulating deep roadway deformation under underground water freeze-thaw cycle effect |
| CN111766369B (en) * | 2020-07-01 | 2021-02-12 | 中国科学院地质与地球物理研究所 | Visual system for simulating deep roadway deformation under underground water freeze-thaw cycle effect |
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