CN109443809A - It is related to the tunnel in cold area longitudinal temperature experimental provision of train Piston Action Wind factor - Google Patents
It is related to the tunnel in cold area longitudinal temperature experimental provision of train Piston Action Wind factor Download PDFInfo
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- CN109443809A CN109443809A CN201811213319.7A CN201811213319A CN109443809A CN 109443809 A CN109443809 A CN 109443809A CN 201811213319 A CN201811213319 A CN 201811213319A CN 109443809 A CN109443809 A CN 109443809A
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- 238000013480 data collection Methods 0.000 claims abstract description 8
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 238000004088 simulation Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 239000000565 sealant Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 5
- 230000005641 tunneling Effects 0.000 abstract description 3
- 238000009423 ventilation Methods 0.000 abstract description 3
- 206010044565 Tremor Diseases 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000002528 anti-freeze Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 108010053481 Antifreeze Proteins Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000009746 freeze damage Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention discloses be related to the tunnel in cold area longitudinal temperature experimental provision of train Piston Action Wind factor, including constant temperature storehouse, air speed control device, tunnel model, train model device, thermostat, air velocity transducer, temperature sensor, data collection system, constant temperature storehouse is to provide cold source, air speed control device is to provide wind energy, tunnel model is formed by tunnel model unit spliced, thermostat is made of thermostat unit and is arranged independently of each other between thermostat unit, thermostat unit is wrapped in tunnel model unit outer surface, air velocity transducer, temperature sensor be arranged in tunnel model and with data collection system Electricity Federation.The experimental provision tested using the tunnel in cold area longitudinal temperature regularity of distribution under one-way or bi-directional ventilation condition provided by the invention, the regularity of distribution that long tunnel longitudinal temperature under the conditions of different length of tunnel, different tunnel portal temperature, different tunnel portal wind speed, different surrounding rock initial temperature etc. can be simulated, can provide accurate parameter for head of district's tunneling insulating layer laying length of trembling with fear.
Description
Technical field
The present invention relates to tunnel in cold area experimental provisions, are specifically related to the tunnel in cold area longitudinal temperature of train Piston Action Wind factor
Experimental provision.
Background technique
In the high latitude areas such as northwest China, northeast and China's High Altitude in West China area, the tunnel built is increasingly
It is more, and length of tunnel is also increasingly longer.With the refined amp- Linzhi's section of Sichuan-Tibet railway, tunnel accounting is even more than 90%, according to a preliminary estimate
Length is more than that the tunnel of 30km has 7 or more, has tunnel height above sea level in part in 4200m or more.
Currently, the short tunnel in cold area in, usually uses identical anti-freeze thawing measure in full tunnel, and insulating layer is laid with thickness
Spend it is identical, although as long tunnel is increasing, it is also considered that long tunnel both ends be laid with insulating layer mode, this be laid with length
Degree is substantially according to the methods of external experience formula or engineering analogy, is not met with China's actual conditions, tunnel in cold area is antifreeze
Melt the technical specification and data that design parameter not can refer to.
In addition, there are some new problems relevant to Temperature Distribution in tunnel, such as with the operation of opening of cold area's high-speed rail
The Harbin-to-Dalian high-speed rail that is open to traffic is runed, occurs bullet train operation in winter bring cold energy in tunnel into cause asking for temperature redistribution
Topic causes original positive warm area section in major long tunnel to be responsible for, icing phenomenon is caused to occur, comes to the safety belt of bullet train hidden
Suffer from.
It is obtaining the result is that most really, also can most meet practical feelings using the method for carrying out field test to live tunnel
Condition can provide accurate parameter for insulating layer laying length, but there are problems that two, first is that test result can only represent a certain seat tool
The influence factor of the body tunnel longitudinal temperature regularity of distribution, the tunnel longitudinal temperature regularity of distribution is numerous, such as: the most cold monthly average temperature in hole
Degree, natural wind speed, wind direction, length of tunnel etc., popularization and application have certain limitation, in addition carry out on-the-spot test in Han Qu and need to consume
Take a large amount of human and material resources and financial resources, project amount is big, and economic and practical is general, and long highway tunnel can also be used
The method of on-the-spot test, and it is almost impossible for high-speed rail operation line in carry out temperature test；Second is that only tunnel completion is logical
Data test result after vehicle could represent the actual tunnel longitudinal temperature regularity of distribution, and on-the-spot test has serious full rear property,
It is difficult to meet the actual demand of design.Theory analysis then excessively idealizes, it is assumed that condition is too many, it is also difficult to meet requirement of engineering,
It even can satisfy needs, also need to be verified.Therefore, on the whole, a kind of research Han Qu is lacked to cold area's major long tunnel
The effective means of the tunnel longitudinal temperature regularity of distribution, especially for high-speed railway, tunnel temperature distribution is advised under the conditions of Piston Action Wind
Rule, lacks effective research means.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide the tunnel in cold area for being related to train Piston Action Wind factor is vertical
To temperature experimental provision, different length of tunnel, different tunnel portal temperature, different tunnel portal wind can be simulated by the device
The regularity of distribution of long tunnel longitudinal temperature under the conditions of speed, different surrounding rock initial temperature etc., thus for cold head of district's tunneling insulating layer paving
If Design of length provides foundation.
The purpose of the present invention is achieved through the following technical solutions: the tunnel in cold area for being related to train Piston Action Wind factor is vertical
It is passed to temperature experimental provision, including constant temperature storehouse, air speed control device, Train Simulators, tunnel model, thermostat, wind speed
Sensor, temperature sensor, data collection system, the constant temperature storehouse exist to provide cold source, the air speed control device setting
In constant temperature storehouse and to provide wind energy, the tunnel model is formed by tunnel model unit spliced and is connected to constant temperature storehouse,
The thermostat is made of thermostat unit and is arranged independently of each other between thermostat unit, and thermostat unit is wrapped in tunnel mould
Type unit outer surface, the air velocity transducer, temperature sensor be arranged in tunnel model and with data collection system Electricity Federation.
Preferably, the constant temperature storehouse includes storehouse and to control temperature in storehouse, and the storehouse side is equipped with
With the consistent circular hole of tunnel model internal diameter；The air speed control device includes axial flow blower, the central axis of the axial flow blower with
Tunnel model center overlapping of axles, axial flow blower outer dimension are greater than circular hole size.
Preferably, the constant temperature storehouse is equipped with and one and be connected to tunnel model one end, or equipped with 2 and respectively with tunnel
The connection of model both ends.
Preferably, the tunnel model uses pvc pipe, is connected between the tunnel model unit by pin and box sub, and
Junction is sealed by sealant.
Preferably, the thermostat unit is in cylindrical type, and the inner sidewall of thermostat unit selects the aluminium of 0.2-0.5mm thickness
Material, thermostat unit include catch basin, and the catch basin is equipped with inlet and outlet pipes, and the inlet and outlet pipes are erected by horizontal tube and two
Straight tube composition, the both ends of the horizontal tube are connect with two vertical pipes respectively.
Preferably, thermostat unit one end is equipped with several connecting rods, and the other end is equipped with company corresponding with connecting rod
Hole is connect, the length of the connecting rod is not less than the half of thermostat element length.
Preferably, the pin and box sub between the tunnel model unit is arranged in thermostat unit.
Preferably, the air velocity transducer, temperature sensor are equipped with several, and are uniformly arranged, the temperature sensor
It is provided in the upper and lower sides of tunnel model, one of them described air velocity transducer is arranged in one end of tunnel model and to examine
Survey the wind speed size of air speed control device.
Preferably, the Train Simulators include train simulation, wire, train model train controller, baffle
And the control plug that slows down, the wire are mounted at the positive central axes of tunnel model, the train model is movably arranged on wire
On, the deceleration control plug is connect with baffle side, and is all disposed within tunnel model one end.
Preferably, the cross dimensions of the tunnel model is 1:50, and each tunnel model element length is 3m
The beneficial effects of the present invention are: utilizing tunnel in cold area longitudinal temperature under one-way or bi-directional ventilation condition provided by the invention point
The experimental provision of cloth rule test, can simulate different length of tunnel, different tunnel portal temperature, different tunnel portal wind speed,
The regularity of distribution of long tunnel longitudinal temperature under the conditions of different surrounding rock initial temperature etc. can be laid with length for cold head of district's tunneling insulating layer
Degree provides accurate parameter, on the one hand can effectively prevent tunnel-liner freeze injury appearance, guarantee driving safety；On the other hand it can effectively drop
Low construction cost improves business efficiency, provides foundation for the construction and design in head of district tunnel of trembling with fear.
Detailed description of the invention
Fig. 1 is bidirectional ventilated experimental provision；
Fig. 2 is longitudinal cross-section diagram in Fig. 3；
Train operation schematic diagram in Fig. 3 present invention；
Experimental provision longitudinal direction cross-sectional view in Fig. 4 present invention；
Fig. 5 is thermostat model；
Fig. 6 is the structural schematic diagram of thermostat model unit；
Fig. 7 is tunnel model.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing, but protection scope of the present invention is not limited to
It is as described below.
Embodiment 2
As shown in figures 1 to 6, the tunnel in cold area longitudinal temperature experimental provision for being related to train Piston Action Wind factor includes constant temperature storehouse 1, by
Refrigeration system, storehouse composition, between setting 2 altogether, one main one is auxiliary, and the main use of constant temperature storehouse 1 is fixed, and auxiliary constant temperature storehouse 1 is adopted
With movable type, can move freely.The temperature in storehouse can be accurately controlled by refrigeration system, be provided with one in the side of storehouse
A circle (in order to test the hole for more meeting reality and can also being split into tunnel-shaped), 11 size of circular hole and tunnel model internal diameter
Unanimously.Pulley is installed in the quadrangle of auxiliary 1 lower part of constant temperature storehouse, can move freely, it is more convenient so as to be provided for experiment
Cold source.
Air speed control device is equipped with axial flow blower 12, axial flow blower 12 in storehouse at circular hole 1110-20cm
Central axis and tunnel center overlapping of axles, for 12 outer dimension of axial flow blower than circular hole 11 on storehouse wall than big, guarantee can give tunnel
The uniform Parallel airflow beam of input in road model simulates gravity-flow ventilation by axial flow blower 12.Axial flow blower 12 has different shelf grades,
Cold air in storehouse, is fed forward by the wind that varying strength can be formed by adjusting using axial flow blower 12 with certain speed,
And then the wind of different wind speed is formed, cold wind blows to tunnel by circular hole 11 on storehouse wall, and wind speed biography is equipped at tunnel entrance
Sensor 3 and temperature sensor 4 can be tested into air speed value in tunnel by anemobiagraph, can be learnt by temperature sensor 4
The temperature value of cold air in into tunnel.Tunnel face wind speed can be adjusted by axial flow blower 12, and tunnel face temperature can pass through
It adjusts refrigeration system to adjust, refrigeration system temperature range is 0 ~ -35 DEG C, can cover any high latitude in China and high altitude localities
Most cold monthly mean temperature value.
61 device of train simulation includes train simulation 61, wire 62, train model train controller 63, baffle
64 and slow down control plug 65, the wire 62 is mounted at the positive central axes of tunnel model, and the train model is movably arranged on
On wire 62, the deceleration control plug 65 is connect with 64 side of baffle, and is all disposed within tunnel model one end.According to practical column
Vehicle and tunnel section area ratio relationship, make train model, and train model is equivalent at round train mould using area equivalent method
Type.Using breakdown trailer mode, one finer wire is installed in the positive central axes of tunnel model when experiment, is fixed with train mould on steel wire
Type.Train control is installed on the outside, by controller, can control train model speed, when 65 contact of control plug of slowing down
Be automatically stopped when baffle 64, train can tunnel both ends move back and forth.
Tunnel model is simulated using round heavy wall pvc pipe, and 1:50 considers cross dimensions in proportion, by multistage tunnel model
Unit 2 is assemblied to form tunnel model, and each model unit is the long 3m of every section, and model both ends are provided with male and female interface, Ke Yitong
Assembling combination is crossed into the tunnel model of random length, connector is sealed using sealant, is arranged with temperature above and below in tunnel inner wall
Sensor 4 is spent, the fore-and-aft distance of temperature sensor 4 is considered by 3m, and air velocity transducer 3, Suo Youwen is arranged at same position
The lead of degree sensor 4 and anemobiagraph is connected to data acquisition device.Tunnel model is placed on bracket, and model height is with tunnel axis
Being open with storehouse, centre-height is consistent to be advisable.
Thermostat, using thermostated cooling bath temperature control, each constant temperature slot length 3m.The thermostat unit 5 is in cylindrical type, and permanent
The inner sidewall of warm slot unit 5 selects the aluminium material of 0.3mm thickness, and thermostat unit 5 includes catch basin, the catch basin equipped with into
Outlet pipe, the inlet and outlet pipes are made of horizontal tube and two vertical pipes, and the both ends of the horizontal tube are connect with two vertical pipes respectively.
Inlet and outlet pipes are made of horizontal tube and two vertical pipes, can increase thermostat inside water pressure, enable thermostat close to tunnel mould
Type guarantees thermostat simulation.
More specifically, described 5 one end of thermostat unit is equipped with several connecting rods 51, and the other end is equipped with and connecting rod
51 corresponding connecting holes 52, the length of the connecting rod 51 are not less than the half of 5 length of thermostat unit.Thermostat unit 5 it
Between connecting component use the good material of thermal conductivity, realize and transmit heat between the thermostat unit 5 being in contact, make to measure and
Data be more bonded reality.
Country rock temperature on the outside of tunnel can be simulated by thermostat, by controlling the temperature of thermostat, can be simulated true
Tunnel surrounding initial temperature.Each thermostat can independent temperature control, and then tunnel longitudinal direction different surrounding rock can be simulated initially
Tender feeling condition reaches the different edpth of tunnel conditions of simulation.
Data collection system, in model air velocity transducer 3 and temperature sensor 4 connect, mainly acquire experimentation
The air speed data of middle tunnel temperature data along longitudinal direction and different depth, can automatic data collection, it is whole-process automatic in experimentation
Acquisition, frequency acquisition can determine according to actual needs.
Whole experiment process is:
1, cold storage at constant temperature is equipped with to be installed in place air speed control device in cold abutment wall side aperture as required in freezer, go forward side by side
Row debugging, it is ensured that can achieve the subzero temperature of requirement of experiment.
2, processing and fabricating pin-connected panel tunnel model as required, tunnel model length is based on the every section of 3m, convenient transportation and peace
Dress.
3, constant temperature cold trap is installed, it is spare.
4, the assembled tunnel model in thermostat, installs temperature, wind speed measuring point as required in an assembling process.
5, Train Simulators are installed.
6, thermostatic bath system and data acquisition test system are opened, reaches requirement of experiment and steady to tunnel model peripheral temperature
After fixed, prepare cold storage at constant temperature.
7, it according to tunnel both ends temperature simulation value, opens cold storage at constant temperature and sets relevant temperature value, dropped to cold storehouse temperature
To requirement of experiment value, air speed control device is separately turned on according to requirement of experiment, takes out the partition in freezer abutment wall hole, cold wind enters
Model tunnel, is tested, and wind speed size is adjusted step by step by ascending sequence.
8, testing after temperature is basicly stable in tunnel model, under the conditions of this terminates, and then adjusts wind-force size, carries out
Next stage wind velocity test stops this time testing after the completion of desired all rank wind speed are tested.
9, it by requirement of experiment adjustment thermostat and cold storage at constant temperature temperature, is tested next time.
10, it by assembling different tunnel growth devices, is accordingly tested.
The above is only a preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and can be at this
In the text contemplated scope, modifications can be made through the above teachings or related fields of technology or knowledge.And those skilled in the art institute into
Capable modifications and changes do not depart from the spirit and scope of the present invention, then all should be in the protection scope of appended claims of the present invention
It is interior.
Claims (10)
1. being related to the tunnel in cold area longitudinal temperature experimental provision of train Piston Action Wind factor, which is characterized in that including constant temperature storehouse, wind
Velocity control device, tunnel model, Train Simulators, thermostat, air velocity transducer, temperature sensor, data collection system, institute
It states constant temperature storehouse and is arranged to provide cold source, the air speed control device in constant temperature storehouse and to provide wind energy, the tunnel
Road model is formed by tunnel model unit spliced and is connected to constant temperature storehouse, and the Train Simulators are arranged in tunnel model
Interior, the thermostat is made of thermostat unit and is arranged independently of each other between thermostat unit, and thermostat unit is wrapped in tunnel
Road model unit outer surface, the air velocity transducer, temperature sensor are arranged in tunnel model and and data collection system
Electricity Federation.
2. the tunnel in cold area longitudinal temperature experimental provision according to claim 1 for being related to train Piston Action Wind factor, feature
Be: the constant temperature storehouse includes storehouse and to control temperature in storehouse, and the storehouse side is equipped with and tunnel model
The consistent circular hole of internal diameter；The air speed control device includes axial flow blower, in the central axis and tunnel model of the axial flow blower
Mandrel is overlapped, and axial flow blower outer dimension is greater than circular hole size.
3. the tunnel in cold area longitudinal temperature experimental provision according to claim 2 for being related to train Piston Action Wind factor, feature
Be: the constant temperature storehouse is equipped with one and is connected to tunnel model one end, or is equipped with 2 and connects respectively with tunnel model both ends
It is logical.
4. the tunnel in cold area longitudinal temperature experimental provision according to claim 1 for being related to train Piston Action Wind factor, feature
Be: the tunnel model uses pvc pipe, is connected between the tunnel model unit by pin and box sub, and junction passes through
Sealant sealing.
5. the tunnel in cold area longitudinal temperature experimental provision according to claim 1 for being related to train Piston Action Wind factor, feature
Be: the thermostat unit is in cylindrical type, and the inner sidewall of thermostat unit selects the aluminium material of 0.2-0.5mm thickness, constant temperature
Slot unit includes catch basin, and the catch basin is equipped with inlet and outlet pipes, and the inlet and outlet pipes are made of horizontal tube and two vertical pipes,
The both ends of the horizontal tube are connect with two vertical pipes respectively.
6. the tunnel in cold area longitudinal temperature experimental provision according to claim 5 for being related to train Piston Action Wind factor, feature
Be: thermostat unit one end is equipped with several connecting rods, and the other end is equipped with connecting hole corresponding with connecting rod, the company
The length of extension bar is not less than the half of thermostat element length.
7. the tunnel in cold area longitudinal temperature experimental provision according to claim 5 for being related to train Piston Action Wind factor, feature
Be: the pin and box sub between the tunnel model unit is arranged in thermostat unit.
8. the tunnel in cold area longitudinal temperature experimental provision according to claim 1 for being related to train Piston Action Wind factor, feature
Be: the air velocity transducer, temperature sensor are equipped with several, and are uniformly arranged, and the temperature sensor is in tunnel model
Upper and lower sides be provided with, one of them described air velocity transducer is arranged in one end of tunnel model and to detect blast velocity control
The wind speed size of device.
9. the tunnel in cold area longitudinal temperature experimental provision according to claim 1 for being related to train Piston Action Wind factor, feature
Be: the Train Simulators include train simulation, wire, train model train controller, baffle and control of slowing down
Plug, the wire are mounted at the positive central axes of tunnel model, and the train model is movably arranged on wire, the deceleration
Control plug is connect with baffle side, and is all disposed within tunnel model one end.
10. the tunnel in cold area longitudinal temperature experimental provision according to claim 1 for being related to train Piston Action Wind factor, feature
Be: the cross dimensions of the tunnel model is 1:50, and each tunnel model element length is 3m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213319.7A CN109443809A (en) | 2018-10-18 | 2018-10-18 | It is related to the tunnel in cold area longitudinal temperature experimental provision of train Piston Action Wind factor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811213319.7A CN109443809A (en) | 2018-10-18 | 2018-10-18 | It is related to the tunnel in cold area longitudinal temperature experimental provision of train Piston Action Wind factor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109443809A true CN109443809A (en) | 2019-03-08 |
Family
ID=65547228
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811213319.7A Withdrawn CN109443809A (en) | 2018-10-18 | 2018-10-18 | It is related to the tunnel in cold area longitudinal temperature experimental provision of train Piston Action Wind factor |
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| Country | Link |
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| CN (1) | CN109443809A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031241A (en) * | 2019-05-16 | 2019-07-19 | 西南交通大学 | Simulate the experimental rig of complex environment Train bow net and insulator operating status |
| CN115754228A (en) * | 2022-11-07 | 2023-03-07 | 中交第一公路勘察设计研究院有限公司 | Indoor simulation test device for tunnel in alpine and high-altitude area and manufacturing and testing method |
-
2018
- 2018-10-18 CN CN201811213319.7A patent/CN109443809A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110031241A (en) * | 2019-05-16 | 2019-07-19 | 西南交通大学 | Simulate the experimental rig of complex environment Train bow net and insulator operating status |
| CN115754228A (en) * | 2022-11-07 | 2023-03-07 | 中交第一公路勘察设计研究院有限公司 | Indoor simulation test device for tunnel in alpine and high-altitude area and manufacturing and testing method |
| CN115754228B (en) * | 2022-11-07 | 2024-05-17 | 中交第一公路勘察设计研究院有限公司 | Tunnel indoor simulation test device and manufacturing and test method for high-cold high-altitude areas |
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Application publication date: 20190308 |