CN106485975A - A kind of tunnel in cold area temperature field laboratory experiment system - Google Patents
A kind of tunnel in cold area temperature field laboratory experiment system Download PDFInfo
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- CN106485975A CN106485975A CN201611032431.1A CN201611032431A CN106485975A CN 106485975 A CN106485975 A CN 106485975A CN 201611032431 A CN201611032431 A CN 201611032431A CN 106485975 A CN106485975 A CN 106485975A
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Abstract
A kind of tunnel in cold area temperature field laboratory experiment system, including master controller and experimental model, experimental model includes refrigerating chamber and tunnel model, and tunnel model is arranged on the inside of refrigerating chamber, and master controller is located at the outside of refrigerating chamber；It is provided with electric heater in the external boundary temperature control belt of tunnel model, country rock temperature sensor in country rock, is distributed with, tunnel body lower part is provided with gutter, and cooling-water temperature sensor and water flow sensor are distributed with this gutter；Freezing interior is additionally provided with attemperater, frequency conversion fan, air-conditioning draught fan and temperature sensor, and attemperater is communicated with gutter through feed pump and feed pipe, and frequency conversion fan is located at the hole of tunnel model and towards this hole；Country rock temperature sensor, cooling-water temperature sensor, water flow sensor, temperature sensor, frequency conversion fan, air-conditioning draught fan, electric heater, water heater are all connected with master controller with feed pump；Realize carrying out l-G simulation test to the three-dimensional temperature field of the outside air temperature, ground water temperature and country rock ground temperature of tunnel in cold area.
Description
Technical field
The present invention relates to tunnel field is and in particular to a kind of tunnel in cold area temperature field laboratory experiment system.
Background technology
China trembles with fear area's area distributions extensively, and trip demand is vigorous, and Tunnel Engineering is as the effective means crossed over mountain after mountain
It is widely adopted.In the winter time, because subzero temperature environment leads to freezing damage in tunnel to happen occasionally, on the one hand show as ice slip, icicle, ice berg
Etc. ice formation issues, on the other hand show as tunnel structure and led to breakage, fall block or even problem of caving in by frost-heave force problem.How
Effectively science tunnel in cold area temperature field is carried out study most important.
At present, related temperature field lab simulation technology can be simulated to tunnel structure and insulation construction, but for
Temperature boundary in complex environment under multifactor impact controls ineffective it is impossible to effectively reproduce the changeable of tunnel in cold area country rock temperature field
, there is considerable influence to the accuracy of experimental result in environment.
Set up the three-dimensional laboratory test system in tunnel in cold area temperature field, propose corresponding pilot system, solve tunnel in cold area
Under the influence of hole weather conditions (temperature, wind speed, wind direction), hydrologic condition (flow velocity, water temperature) and wall rock condition (temperature, heat conduction)
Tunnel in cold area thermo parameters method and gutter freeze thawing problem.
Content of the invention
The present invention is directed to the deficiencies in the prior art, proposes a kind of tunnel in cold area temperature field laboratory experiment system, particular technique
Scheme is as follows：
A kind of tunnel in cold area temperature field laboratory experiment system, including master controller and experimental model, it is critical only that：Described
Experimental model includes refrigerating chamber (12) and tunnel model (6), and described tunnel model (6) is arranged on the interior of described refrigerating chamber (12)
Portion, described master controller is located at the outside of described refrigerating chamber；
On described tunnel model (6) inner surface, ecto-entad is disposed with external boundary temperature control belt (4), country rock (1) and tunnel
Road body (2), is provided with electric heater in described external boundary temperature control belt (4), country rock temperature sensing is distributed with described country rock (1)
Device, this country rock temperature sensor is provided with draining near the excircle in described tunnel body (2), described tunnel body (2) bottom
Ditch (3), is distributed with cooling-water temperature sensor and water flow sensor in this gutter (3)；
It is additionally provided with attemperater (9), frequency conversion fan (7), air-conditioning draught fan (10) and room temperature in described refrigerating chamber (12) to pass
Sensor, described attemperater is provided with water heater and feed pump, the water inlet of described feed pump and described attemperater (9)
Outlet communicates, and the outlet of this feed pump is communicated with described gutter (3) through feed pipe, and described frequency conversion fan (7) is located at institute
State at the hole of tunnel model (6) and towards this hole；
Described country rock temperature sensor, cooling-water temperature sensor, water flow sensor, temperature sensor, frequency conversion fan (7), sky
Blower fan (10), electric heater, water heater is adjusted all to be connected with described master controller with feed pump.
The present invention is realized in：Main controller controls and record whole temperature field laboratory experiment process, and by adjusting
Whole air-conditioning draught fan and the climatic environment at frequency conversion fan simulation tunnel hole, by adjusting the electric heater of external boundary temperature control belt, with
Shi Liyong country rock temperature sensor real-time control and monitoring country rock temperature, are made country rock simulate actual ground temperature, are incubated by adjustment
Water temperature in water tank, then the water of different temperatures and different flow is transported in the gutter in tunnel model, simulates underground
The process that water flows in tunnel in cold area gutter, freezes and melt, realizes tunnel in cold area draining environment, host rock environment and hole
Temperature field under Climatic Effects and gutter freezing-thawing test.
To better implement the present invention, may further be：
Described tunnel body (6) includes preliminary bracing (2-2) and secondary lining (2-1), in described preliminary bracing (2-2) and
It is provided with tunnel temperature sensor between secondary lining (2-1)；Described gutter (3) is located at the inverted arch of described secondary lining (2-1)
On, described feed pipe one end is connected with described feed pump, and the other end is communicated with described gutter (3), sets on described feed pipe
There is hydraulic pressure sensor, described hydraulic pressure sensor is all connected with described master controller with tunnel temperature sensor；Process in experiment
The temperature variations of middle real-time monitoring tunnel structure, when the water in gutter starts to freeze simultaneously blocking pipeline, are supplied by detection
Pressure in water pipe, to control the inflow of feed pipe, can reduce the inflow of feed pipe when water freezes, thus avoid because
Pipeline blockage, pressure drastically raise the problems such as pipelines from bursting leading to, leak, improve the success rate of experiment；
Described tunnel model (6) is supported by support (5), the external boundary of described support (5) upper end and described tunnel model (6)
Temperature control belt (4) connects, and is provided with soft rubber layer between described external boundary temperature control belt (4) and support (5)；Soft rubber layer rise every
Heat, buffering, anti-puncture effect, are provided with, at support two ends, the height that jack adjusts tunnel model two ends, make tunnel model
Longitudinal gradient be consistent with actual；
Described refrigerating chamber (12) is provided with double-layer heat insulation door (11), and the compressor (10-1) of described air-conditioning draught fan (10) is arranged on
Described refrigerating chamber (12) is outward；So, make the better heat preservation of refrigerating chamber；
Described temperature sensor, near described tunnel model (6), makes the tunnel in cold area temperature environment of simulation more accurate.
Beneficial effects of the present invention are：Realize to tunnel in cold area in draining environment, host rock environment and hole climatic environment shadow
Temperature field under ringing and gutter freeze thawing carry out l-G simulation test, and the interaction of test ground temperature, water temperature and temperature three is to Han Qu
The impact that tunnel produces；Using control pressure of supply water and detection gutter in discharge, can feasible simulation subsoil water in draining
Freezing and thawing overall process in ditch；Setting frequency conversion motor can be to the microclimate environment of tunnel portal to tunnel in cold area jelly
Evil impact is tested；The master controller of setting being capable of whole real-time monitoring control temperature, water temperature and tunnel mould in gutter
Temperature variations in type structure, facilitate experimental analysiss.
Brief description
Fig. 1 is the connection block diagram of master controller in this experimental system；
Fig. 2 is the structural representation of experimental model in this experimental system；
Fig. 3 is the structural representation of tunnel model in this experimental system.
Specific embodiment
Below in conjunction with the accompanying drawings presently preferred embodiments of the present invention is described in detail, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention is made apparent clearly defining.
As shown in Figure 1, Figure 2 and Figure 3: A kind of tunnel in cold area temperature field laboratory experiment system, including master controller and experiment Model, experimental model includes refrigerating chamber 12 and tunnel model 6, and tunnel model 6 is arranged on the inside of refrigerating chamber 12, and master controller sets Put the outside in refrigerating chamber 12, facilitate operator that master controller is operated;
On tunnel model 6 inner surface, ecto-entad is disposed with external boundary temperature control belt 4, country rock 1 and tunnel body 2, outward
It is provided with electric heater in border temperature control belt 4, country rock temperature sensor in country rock 1, is distributed with, this country rock temperature sensor is near tunnel
The excircle of road body 2, tunnel body 2 bottom is provided with gutter 3, cooling-water temperature sensor and water is distributed with this gutter 3
Flow transducer；Tunnel model 6 is supported by support 5, and support 5 upper end is connected with the external boundary temperature control belt 4 of tunnel model 6, outside
It is provided with soft rubber layer between border temperature control belt 4 and support 5；Tunnel body 6 includes preliminary bracing 2-2 and secondary lining 2-1,
It is provided with tunnel temperature sensor between preliminary bracing 2-2 and secondary lining 2-1；Gutter 3 is located at the inverted arch of secondary lining 2-1
On, and run through tunnel model 6 and arrange, feed pipe one end is connected with feed pump, and the other end is communicated with the one end in gutter 3, is supplying
Water pipe is provided with hydraulic pressure sensor, and hydraulic pressure sensor is all connected with master controller with tunnel temperature sensor；
It is additionally provided with attemperater 9, frequency conversion fan 7, air-conditioning draught fan 10 and temperature sensor, room temperature senses in refrigerating chamber 12
Near tunnel model, attemperater is provided with water heater and feed pump, the water outlet of the water inlet of feed pump and attemperater 9 to device
Mouthful communicate, the outlet of feed pump communicates with gutter 3 through feed pipe, frequency conversion fan 7 at the hole of tunnel model 6 and with
Towards this hole, refrigerating chamber 12 is provided with double-layer heat insulation door 11 to different angles, and the compressor 10-1 of air-conditioning draught fan 10 is arranged on freezing
Outside room 12；
Country rock temperature sensor, cooling-water temperature sensor, water flow sensor, temperature sensor, frequency conversion fan 7, air-conditioning draught fan
10th, electric heater, water heater are all connected with master controller with feed pump.
Wherein：Using materials such as Gypsum Fibrosum, wire gauze, water, iron powder, antiseepage glue, make the tunnel model 6 containing gutter 3,
If tunnel test section is longer, can complete in the way of using sectional making, entire combination, the length of every section of tunnel model 6 is not
More than 1m；
6 buried sections of country rocks of tunnel model 1 somewhat thicken, and are typically taken as 5m thickness it is ensured that country rock 1 constant temperature effect, reduce tunnel
The temperature impact of model 6 external boundary, for the Shallow Section of tunnel model 6, overlying and left and right depth of stratum are defined by actual (real) thickness,
Bottom Thickness is identical with buried section；The surface of support 5 is coated with soft rubber layer, plays heat-insulated, buffering, anti-puncture work
With, the support 5 of setting differing heights, so that the longitudinal gradient of tunnel model 6 is consistent with actual；
Fill country rock 1 in external boundary temperature-controlling zone 4 higher slice, and pass in the place pre-buried country rock temperature near tunnel body 2
Sensor；Embedding tunnel temperature sensor between the preliminary bracing 2-2 and secondary lining 2-1 of tunnel body 2；Setting frequency conversion fan 7
In the position at tunnel model 6 hole, adjust the wind direction at frequency conversion fan 7 hole relatively according to the actual wind direction in tunnel in cold area scene.
The present invention is such work：Check the connection state of each sensor and each performer and master controller, it is to avoid
Connect by mistake；
Water-filling is carried out to attemperater 9, and the working condition of each sensor and each performer is debugged；
After the completion of debugging, stop attemperater 9 and supplied water in gutter, stop the heating to external boundary temperature control belt 4 and closing
Frequency conversion motor 7, the compressor 10-1 then starting air-conditioning draught fan 10 lowers the temperature to refrigerating chamber 12, and refrigerating chamber 12 temperature is set
For the actual temperature at simulated object cold area scene, then heat external boundary temperature control belt 4, make the temperature of country rock 1 reach tunnel model 6
The sets requirement of initial ground temperature；
Water temperature in attemperater 9 is adjusted, makes water temperature reach the ground water temperature at simulation tunnel in cold area scene, start
Feed pump, the streamflow regime in emulation tunnel in cold area scene gutter 3；
Start and adjust frequency conversion fan 7 and simulate the weather at the hole of tunnel in cold area scene；
The test data of all kinds of measuring point of real time record, until off-test.
Claims (5)
1. a kind of tunnel in cold area temperature field laboratory experiment system, including master controller and experimental model it is characterised in that：Described reality
Test model and include refrigerating chamber (12) and tunnel model (6), described tunnel model (6) is arranged on the inside of described refrigerating chamber (12),
Described master controller is located at the outside of described refrigerating chamber (12)；
On described tunnel model (6) inner surface, ecto-entad is disposed with external boundary temperature control belt (4), country rock (1) and tunnel originally
Body (2), is provided with electric heater in described external boundary temperature control belt (4), country rock temperature sensor is distributed with described country rock (1), should
Country rock temperature sensor is provided with gutter (3) near the excircle in described tunnel body (2), described tunnel body (2) bottom,
Cooling-water temperature sensor and water flow sensor are distributed with this gutter (3)；
It is additionally provided with attemperater (9), frequency conversion fan (7), air-conditioning draught fan (10) and temperature sensor in described refrigerating chamber (12),
Described attemperater is provided with water heater and feed pump, the water outlet of the water inlet of described feed pump and described attemperater (9)
Mouth communicates, and the outlet of this feed pump is communicated with described gutter (3) through feed pipe, and described frequency conversion fan (7) is located at described tunnel
At the hole of road model (6) and towards this hole；
Described country rock temperature sensor, cooling-water temperature sensor, water flow sensor, temperature sensor, frequency conversion fan (7), air-conditioner wind
Machine (10), electric heater, water heater are all connected with described master controller with feed pump.
2. according to claim 1 a kind of tunnel in cold area temperature field laboratory experiment system it is characterised in that：Described tunnel body
(6) include preliminary bracing (2-2) and secondary lining (2-1), set between described preliminary bracing (2-2) and secondary lining (2-1)
There is tunnel temperature sensor；Described gutter (3) be located at described secondary lining (2-1) inverted arch on, described feed pipe one end with
Described feed pump is connected, and the other end is communicated with described gutter (3), is provided with hydraulic pressure sensor on described feed pipe, described water
Pressure sensor is all connected with described master controller with tunnel temperature sensor.
3. according to claim 1 a kind of tunnel in cold area temperature field laboratory experiment system it is characterised in that：Described tunnel model
(6) supported by support (5), described support (5) upper end is connected with the external boundary temperature control belt (4) of described tunnel model (6), described
It is provided with soft rubber layer between external boundary temperature control belt (4) and support (5).
4. according to claim 1 a kind of tunnel in cold area temperature field laboratory experiment system it is characterised in that：Described refrigerating chamber
(12) it is provided with double-layer heat insulation door (11), the compressor (10-1) of described air-conditioning draught fan (10) is arranged on described refrigerating chamber (12) outward.
5. according to claim 1 a kind of tunnel in cold area temperature field laboratory experiment system it is characterised in that：Described room temperature sensing
Device is near described tunnel model (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611032431.1A CN106485975B (en) | 2016-11-15 | 2016-11-15 | A kind of tunnel in cold area temperature field laboratory experiment system |
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| CN201611032431.1A CN106485975B (en) | 2016-11-15 | 2016-11-15 | A kind of tunnel in cold area temperature field laboratory experiment system |
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| CN106485975B CN106485975B (en) | 2019-03-29 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328917A (en) * | 2017-08-14 | 2017-11-07 | 西南石油大学 | The simulation system and experimental method of face stability are excavated for regulating and controlling frozen soil tunnel |
| CN108278130A (en) * | 2017-12-07 | 2018-07-13 | 淮阴工学院 | A kind of tunnel in cold area temperature field monitoring device and its test method |
| CN108535314A (en) * | 2018-03-01 | 2018-09-14 | 淮阴工学院 | A kind of cold area's Railway Tunnel air curtain experimental rig and test method |
| CN109342092A (en) * | 2018-07-18 | 2019-02-15 | 淮阴工学院 | A kind of tunnel temperature field analogy method |
| CN110082284A (en) * | 2019-04-09 | 2019-08-02 | 中水北方勘测设计研究有限责任公司 | A kind of system and method for adjustable ice layer thickness and progress avalanche test |
| CN110118666A (en) * | 2019-05-10 | 2019-08-13 | 西南交通大学 | A kind of environment-friendly type tunnel in cold area freeze injury emulation laboratory experiment system and its experimental method |
| CN110487443A (en) * | 2019-09-26 | 2019-11-22 | 中铁隧道局集团有限公司 | Tunnel excavation detection method under a kind of highland temperature state |
| CN110736761A (en) * | 2019-09-28 | 2020-01-31 | 同济大学 | Visual test device and method for influence of temperature changes on subway tunnel |
| CN111983193A (en) * | 2020-08-26 | 2020-11-24 | 西南交通大学 | High ground temperature country rock tunnel structure analogue test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107328917A (en) * | 2017-08-14 | 2017-11-07 | 西南石油大学 | The simulation system and experimental method of face stability are excavated for regulating and controlling frozen soil tunnel |
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| CN108278130A (en) * | 2017-12-07 | 2018-07-13 | 淮阴工学院 | A kind of tunnel in cold area temperature field monitoring device and its test method |
| CN108535314A (en) * | 2018-03-01 | 2018-09-14 | 淮阴工学院 | A kind of cold area's Railway Tunnel air curtain experimental rig and test method |
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| CN110082284B (en) * | 2019-04-09 | 2021-06-25 | 中水北方勘测设计研究有限责任公司 | System and method capable of adjusting ice layer thickness and performing collapse test |
| CN110118666A (en) * | 2019-05-10 | 2019-08-13 | 西南交通大学 | A kind of environment-friendly type tunnel in cold area freeze injury emulation laboratory experiment system and its experimental method |
| CN110487443A (en) * | 2019-09-26 | 2019-11-22 | 中铁隧道局集团有限公司 | Tunnel excavation detection method under a kind of highland temperature state |
| CN110736761A (en) * | 2019-09-28 | 2020-01-31 | 同济大学 | Visual test device and method for influence of temperature changes on subway tunnel |
| CN111983193A (en) * | 2020-08-26 | 2020-11-24 | 西南交通大学 | High ground temperature country rock tunnel structure analogue test device |
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Inventor after: Xu Yuping Inventor after: Sun Keguo Inventor after: Qiu Wenge Inventor before: Qiu Wenge Inventor before: Sun Keguo Inventor before: Xu Yuping |