CN106485975B - 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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- CN106485975B CN106485975B CN201611032431.1A CN201611032431A CN106485975B CN 106485975 B CN106485975 B CN 106485975B CN 201611032431 A CN201611032431 A CN 201611032431A CN 106485975 B CN106485975 B CN 106485975B
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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 include freezing chamber and tunnel model, and the inside of freezing chamber is arranged in tunnel model, and master controller is located at the outside of freezing chamber；It is equipped with electric heater in the outer boundary temperature control belt of tunnel model, country rock temperature sensor is distributed in country rock, tunnel body lower part is provided with gutter, and water temperature sensor and water flow sensor is distributed in the gutter；Insulated water tank, frequency conversion fan, air-conditioning draught fan and temperature sensor are additionally provided in freezing chamber, insulated water tank is communicated through water supply pump and water supplying pipe with gutter, and frequency conversion fan is located at the hole of tunnel model and towards the hole；Country rock temperature sensor, water temperature sensor, water flow sensor, temperature sensor, frequency conversion fan, air-conditioning draught fan, electric heater, water heater and water supply pump are connected with master controller；It realizes and l-G simulation test is carried out to the three-dimensional temperature field of the outside air temperature of tunnel in cold area, ground water temperature and country rock ground temperature.
Description
Technical field
The present invention relates to tunnel fields, and in particular to a kind of tunnel in cold area temperature field laboratory experiment system.
Background technique
China trembles with fear, and area's area distributions are extensive, and trip demand is vigorous, and Tunnel Engineering is as the effective means crossed over mountain after mountain
It is widely adopted.In winter, since subzero temperature environment causes 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 showing as tunnel structure by frost-heave force problem leads to damaged, chip off-falling even collapsing problem.How
Effectively science tunnel in cold area temperature field study it is most important.
Currently, relevant temperature field indoor simulation technology can be simulated tunnel structure and insulation construction, but for
Temperature boundary control under multifactor impact in complex environment is ineffective, cannot effectively reproduce the changeable of tunnel in cold area country rock temperature field
Environment, to the accuracy of experimental result, there are larger impacts.
The three-dimensional laboratory test system for establishing tunnel in cold area temperature field proposes corresponding pilot system, solves tunnel in cold area
At hole under the influence of weather conditions (temperature, wind speed, wind direction), hydrologic condition (flow velocity, water temperature) and wall rock condition (temperature, thermally conductive)
Tunnel in cold area thermo parameters method and gutter freeze thawing problem.
Summary of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of tunnel in cold area temperature field laboratory experiment system, particular techniques
Scheme is as follows:
A kind of tunnel in cold area temperature field laboratory experiment system, including master controller and experimental model, key are: described
Experimental model includes freezing chamber (12) and tunnel model (6), and the tunnel model (6) is arranged in the interior of the freezing chamber (12)
Portion, the master controller are located at the outside of the freezing chamber；
Ecto-entad is disposed with outer boundary temperature control belt (4), country rock (1) and tunnel on tunnel model (6) inner surface
Road ontology (2), the outer boundary temperature control belt (4) is interior to be equipped with electric heater, and country rock temperature sensing is distributed in the country rock (1)
Device, for the country rock temperature sensor close to the excircle of the tunnel ontology (2), tunnel ontology (2) lower part is provided with draining
Water temperature sensor and water flow sensor is distributed in the gutter (3) in ditch (3)；
Insulated water tank (9), frequency conversion fan (7), air-conditioning draught fan (10) and room temperature is additionally provided in the freezing chamber (12) to pass
Sensor, the insulated water tank are equipped with water heater and water supply pump, the water inlet of the water supply pump and the insulated water tank (9)
Water outlet communicates, and the water outlet of the water supply pump is communicated through water supplying pipe with the gutter (3), and the frequency conversion fan (7) is located at institute
It states at the hole of tunnel model (6) and towards the hole；
The country rock temperature sensor, water temperature sensor, water flow sensor, temperature sensor, frequency conversion fan (7), sky
Blower (10), electric heater, water heater and water supply pump is adjusted to be connected with the master controller.
The present invention is implemented as follows: main controller controls and recording entire temperature field laboratory experiment process, and pass through tune
The climatic environment of whole air-conditioning draught fan and frequency conversion fan simulation tunnel portal, by adjusting the electric heater of outer boundary temperature control belt, together
Shi Liyong country rock temperature sensor real-time control and monitoring country rock temperature, make country rock simulate practical ground temperature, by adjusting heat preservation
Then the water of different temperatures and different flow is transported in the gutter in tunnel model by the water temperature in water tank, simulate underground
The process that water flows in tunnel in cold area gutter, freezes and melts realizes tunnel in cold area draining environment, host rock environment and hole
Temperature field and gutter freezing-thawing test under Climatic Effects.
To better implement the present invention, it may further be:
The tunnel ontology (2) includes preliminary bracing (2-2) and secondary lining (2-1), in the preliminary bracing (2-2) and
Tunnel temperature sensor is equipped between secondary lining (2-1)；The gutter (3) is located at the inverted arch of the secondary lining (2-1)
On, described water supplying pipe one end is connected with the water supply pump, and the other end is communicated with the gutter (3), sets on the water supplying pipe
There is hydraulic pressure sensor, the hydraulic pressure sensor and tunnel temperature sensor are connected with the master controller；In the process of experiment
The temperature variations of middle real-time monitoring tunnel structure pass through detection and supply when the water in gutter starts to freeze simultaneously blocking pipeline
Pressure in water pipe controls the inflow of water supplying pipe, can reduce the inflow of water supplying pipe when water freezes, thus avoid because
The problems such as pipelines from bursting, leak caused by pipeline blockage, pressure sharply increase, improve the success rate of experiment；
The tunnel model (6) is supported by bracket (5), the outer boundary of bracket (5) upper end and the tunnel model (6)
Temperature control belt (4) connection, is equipped with soft rubber layer between the outer boundary temperature control belt (4) and bracket (5)；Soft rubber layer rise every
Heat, buffering, anti-puncture effect are provided with the height that jack adjusts tunnel model both ends at bracket both ends, make tunnel model
Longitudinal slope be actually consistent；
The freezing chamber (12) is equipped with double-layer heat insulation door (11), and compressor (10-1) setting of the air-conditioning draught fan (10) exists
The freezing chamber (12) is outside；In this way, keeping the heat insulation effect of freezing chamber more preferable；
The temperature sensor keeps the tunnel in cold area temperature environment of simulation more acurrate close to the tunnel model (6).
The invention has the benefit that realizing to tunnel in cold area in draining environment, host rock environment and hole climatic environment shadow
Temperature field and gutter freeze thawing under ringing carry out l-G simulation test, and test ground temperature, water temperature and the interaction of temperature three are to Han Qu
The influence that tunnel generates；Using control pressure of supply water and detection gutter in water flow, can feasible simulation underground water draining
Freeze and thawing overall process in ditch；The variable-frequency motor of setting can microclimate environment to tunnel portal to the jelly of tunnel in cold area
Evil influences to be tested；The master controller of setting whole real-time monitoring and can control temperature, water temperature and tunnel mould in gutter
Temperature variations in type structure, facilitate experimental analysis.
Detailed description of the invention
Fig. 1 is the connection block diagram of master controller in this experimental system；
Fig. 2 is the structural schematic diagram of experimental model in this experimental system；
Fig. 3 is the structural schematic diagram of tunnel model in this experimental system.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
It is 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 include freezing chamber 12 and tunnel model 6, and the inside of freezing chamber 12 is arranged in tunnel model 6, and master controller is set
It sets in the outside of freezing chamber 12, operator is facilitated to operate master controller；
Ecto-entad is disposed with outer boundary temperature control belt 4, country rock 1 and tunnel ontology 2 on 6 inner surface of tunnel model, outside
It is equipped with electric heater in boundary temperature control belt 4, country rock temperature sensor is distributed in country rock 1, the country rock temperature sensor is close to tunnel
The excircle of road ontology 2,2 lower part of tunnel ontology are provided with gutter 3, and water temperature sensor and water is distributed in the gutter 3
Flow sensor；Tunnel model 6 is supported by bracket 5, and 5 upper end of bracket is connect with the outer boundary temperature control belt 4 of tunnel model 6, outside
Soft rubber layer is equipped between boundary temperature control belt 4 and bracket 5；Tunnel ontology 2 includes preliminary bracing 2-2 and secondary lining 2-1,
Tunnel temperature sensor is equipped 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 be arranged through tunnel model 6, water supplying pipe one end is connected with water supply pump, and the other end is communicated with the one end in gutter 3, is being supplied
Water pipe is equipped with hydraulic pressure sensor, and hydraulic pressure sensor and tunnel temperature sensor are connected with master controller；
Insulated water tank 9, frequency conversion fan 7, air-conditioning draught fan 10 and temperature sensor, room temperature sensing are additionally provided in freezing chamber 12
For device close to tunnel model, insulated water tank is equipped with water heater and water supply pump, the water outlet of the water inlet and insulated water tank 9 of water supply pump
Mouthful communicate, the water outlet of water supply pump is communicated through water supplying pipe with gutter 3, frequency conversion fan 7 be located at the hole of tunnel model 6 and with
For different angles towards the hole, freezing chamber 12 is equipped with double-layer heat insulation door 11, and the compressor 10-1 of air-conditioning draught fan 10 is arranged cold
Freeze outside room 12；
Country rock temperature sensor, water temperature sensor, water flow sensor, temperature sensor, frequency conversion fan 7, air-conditioning draught fan
10, electric heater, water heater and water supply pump are connected with master controller.
Wherein: using materials such as gypsum, wire netting, water, iron powder, antiseepage glue, the tunnel model 6 containing gutter 3 is made,
If tunnel test section is longer, can be completed by the way of 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 slightly thicken, and are generally taken as 5m thickness, guarantee 1 constant temperature effect of country rock, reduce tunnel
The temperature of 6 outer boundary of model influences, and for the Shallow Section of tunnel model 6, above covers and left and right depth of stratum is subject to actual (real) thickness,
Lower part Thickness is identical as buried section；The surface of bracket 5 is covered with soft rubber layer, plays heat-insulated, buffering, anti-puncture work
With, the bracket 5 of different height is set, make the longitudinal slope of tunnel model 6 be actually consistent；
Country rock 1 is filled in 4 higher slice of outer boundary temperature-controlling zone, and is passed in the pre-buried country rock temperature in place close to tunnel ontology 2
Sensor；The embedding tunnel temperature sensor between the preliminary bracing 2-2 and secondary lining 2-1 of tunnel ontology 2；Frequency conversion fan 7 is set
Wind direction in the position at 6 hole of tunnel model, according to the practical wind direction adjustment frequency conversion fan 7 in tunnel in cold area scene with respect to hole.
The present invention operates in such a way: checking the connection state of each sensor and each performer and master controller, avoid
Accidentally connect；
Water-filling is carried out to insulated water tank 9, and the working condition of each sensor and each performer is debugged；
After the completion of debugging, stop insulated water tank 9 to gutter water supply, heating and closing of the stopping to outer boundary temperature control belt 4
Variable-frequency motor 7, the compressor 10-1 for then starting air-conditioning draught fan 10 cool down to freezing chamber 12, and 12 temperature of freezing chamber is set
It trembles with fear the actual temperature at area scene for simulated object, then heats outer boundary temperature control belt 4, the temperature of country rock 1 is made to reach tunnel model 6
The sets requirement of initial ground temperature；
Water temperature in insulated water tank 9 is adjusted, water temperature is made to reach the ground water temperature at simulation tunnel in cold area scene, starting
Water supply pump emulates the streamflow regime in tunnel in cold area scene gutter 3；
Start and adjusts the weather at the simulation of frequency conversion fan 7 tunnel in cold area scene hole；
The test data of all kinds of measuring points is recorded in real time, until off-test.
Claims (4)
1. a kind of tunnel in cold area temperature field laboratory experiment system, including master controller and experimental model, it is characterised in that: the reality
Testing model includes freezing chamber (12) and tunnel model (6), and the tunnel model (6) is arranged in the inside of the freezing chamber (12),
The master controller is located at the outside of the freezing chamber (12)；
Ecto-entad is disposed with outer boundary temperature control belt (4), country rock (1) and tunnel sheet on tunnel model (6) inner surface
Body (2), the outer boundary temperature control belt (4) is interior to be equipped with electric heater, and country rock temperature sensor is distributed in the country rock (1), should
For country rock temperature sensor close to the excircle of the tunnel ontology (2), tunnel ontology (2) lower part is provided with gutter (3),
Water temperature sensor and water flow sensor is distributed in the gutter (3)；
It is additionally provided with insulated water tank (9), frequency conversion fan (7), air-conditioning draught fan (10) and temperature sensor in the freezing chamber (12),
The insulated water tank is equipped with water heater and water supply pump, the water outlet of the water inlet of the water supply pump and the insulated water tank (9)
Mouth communicates, and the water outlet of the water supply pump is communicated through water supplying pipe with the gutter (3), and the frequency conversion fan (7) is located at the tunnel
At the hole of road model (6) and towards the hole；
The country rock temperature sensor, water temperature sensor, water flow sensor, temperature sensor, frequency conversion fan (7), air-conditioner wind
Machine (10), electric heater, water heater and water supply pump are connected with the master controller；
The tunnel ontology (2) includes preliminary bracing (2-2) and secondary lining (2-1), in the preliminary bracing (2-2) and secondary
Tunnel temperature sensor is equipped between lining cutting (2-1)；The gutter (3) is located on the inverted arch of the secondary lining (2-1), institute
It states water supplying pipe one end to be connected with the water supply pump, the other end is communicated with the gutter (3), and hydraulic pressure is equipped on the water supplying pipe
Sensor, the hydraulic pressure sensor and tunnel temperature sensor are connected with the master controller.
2. a kind of tunnel in cold area temperature field laboratory experiment system according to claim 1, it is characterised in that: the tunnel model
(6) it is supported by bracket (5), bracket (5) upper end is connect with the outer boundary temperature control belt (4) of the tunnel model (6), described
Soft rubber layer is equipped between outer boundary temperature control belt (4) and bracket (5).
3. a kind of tunnel in cold area temperature field laboratory experiment system according to claim 1, it is characterised in that: the freezing chamber
(12) be equipped with double-layer heat insulation door (11), the air-conditioning draught fan (10) compressor (10-1) setting the freezing chamber (12) outside.
4. a kind of tunnel in cold area temperature field laboratory experiment system according to claim 1, it is characterised in that: the room temperature sensing
Device is close to the tunnel model (6).
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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 true CN106485975B (en) | 2019-03-29 |
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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 |
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| CN109342092A (en) * | 2018-07-18 | 2019-02-15 | 淮阴工学院 | A kind of tunnel temperature field analogy method |
| 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 |
| CN110118666B (en) * | 2019-05-10 | 2020-07-28 | 西南交通大学 | Experimental method of environment-friendly cold region tunnel freezing injury simulation indoor experimental system |
| 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 |
| CN110736761B (en) * | 2019-09-28 | 2020-10-02 | 同济大学 | Visual test device and method for influence of temperature change 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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| JPH11287733A (en) * | 1998-04-03 | 1999-10-19 | Mitsubishi Heavy Ind Ltd | Wind tunnel experiment stem |
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