CN108645885A - Large scale soil mass water-Re-coupling pilot system of power-salt four and method - Google Patents
Large scale soil mass water-Re-coupling pilot system of power-salt four and method Download PDFInfo
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- CN108645885A CN108645885A CN201810513020.7A CN201810513020A CN108645885A CN 108645885 A CN108645885 A CN 108645885A CN 201810513020 A CN201810513020 A CN 201810513020A CN 108645885 A CN108645885 A CN 108645885A
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- 239000002689 soil Substances 0.000 title claims abstract description 234
- 238000010168 coupling process Methods 0.000 title claims abstract description 39
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- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 113
- 150000003839 salts Chemical class 0.000 claims abstract description 48
- 239000011148 porous material Substances 0.000 claims abstract description 31
- 238000013461 design Methods 0.000 claims abstract description 22
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 18
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 238000002474 experimental method Methods 0.000 claims abstract description 8
- 238000010257 thawing Methods 0.000 claims abstract description 7
- 238000007710 freezing Methods 0.000 claims abstract description 6
- 230000008014 freezing Effects 0.000 claims abstract description 6
- 238000003384 imaging method Methods 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 114
- 229910000831 Steel Inorganic materials 0.000 claims description 94
- 239000010959 steel Substances 0.000 claims description 94
- 238000007789 sealing Methods 0.000 claims description 81
- 239000007788 liquid Substances 0.000 claims description 46
- 239000004575 stone Substances 0.000 claims description 42
- 230000005540 biological transmission Effects 0.000 claims description 38
- 239000011521 glass Substances 0.000 claims description 29
- 239000002826 coolant Substances 0.000 claims description 22
- 239000012528 membrane Substances 0.000 claims description 21
- 238000012544 monitoring process Methods 0.000 claims description 21
- 239000000523 sample Substances 0.000 claims description 16
- 238000005086 pumping Methods 0.000 claims description 15
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- 238000007596 consolidation process Methods 0.000 claims description 9
- 230000006641 stabilisation Effects 0.000 claims description 9
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- 238000007906 compression Methods 0.000 claims description 8
- 239000003673 groundwater Substances 0.000 claims description 8
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- 230000001808 coupling effect Effects 0.000 claims description 3
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Classifications
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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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Abstract
The invention discloses four coupling pilot systems of large scale soil mass water heating power salt and methods, are related to geotechnological soil body indoor freezing and thawing experimental study field, including loading frame, loading system, water charging system, temperature control system, acquisition and control system, formation system；Loading system applies xial feed and confining pressure to the soil body, water charging system can simulate different salt content and head feeds the soil body, temperature control system realizes the constant temperature water supply of the Frozen-thawed cycled and water charging system of the soil body, acquisition and control system is to the temperature and water salt distribution of the soil body, pressure, pore water pressure, vertically and transversely deforming, the gas pressure of gas pressure chamber is monitored in real time, the acquisition of control data and imaging, formation system carry out hitting reality and are modelled as testing the soil body used to the earth material of design.The present invention realizes the soil body frozen-thaw process experiment of four couplings of indoor water heating power salt, and support is provided for the Research of Frozen and Melt Test of the soil body.
Description
Technical field
The present invention relates to geotechnological soil body indoor freezing and thawing experimental study fields, more particularly relate to large scale soil mass water-heat-
Four coupling pilot systems of power-salt and method.
Background technology
Frost zone for winter freezes and summer melt soil layer, in China, seasonal frozen ground is mainly distributed on Helan Mountain-
To the east of area and this line to the west of phosphorus pools, the Qinling Mountains-North of Huai River area accounts for about the 53% of national territorial area, meanwhile, in season
It saves in frozen soil range, is dispersed with the area of the salinized soil of large area；It is periodically variable that season freezes temperature existing for saline soil area
Weather environment causes the type area soil body that the multiple diseases such as serious frost heave, thaw collapse, salt is swollen, frost boiling occur, and seriously threatens
The safety and stability of the soil bodys such as ground and roadbed.Although defect phenomenon is different, soil mass water branch, temperature can be attributed to
Therefore the comprehensive function of field, stress field, Field of Salt is as a result, study water-Re-power-salt coupling mechanism of the soil body, proposition season
The soil body disease control countermeasure for freezing saline soil area has important meaning to improving seasonal frost region salt marsh soil body safety and stability
Justice.
At present field monitoring and interior are concentrated mainly on about the water-Re-power of the soil body-coupling experimental study of salt four
Experiment, field observation excessive cycle are spent greatly, and environmental condition is difficult to control, and monitoring result, which is difficult to use in, wants data precision
Ask high scientific research, and the laboratory test for related soil mass water-Re-power-four couplings of salt reported exist more with
Lower deficiency：The experiment soil body is mostly the small scale soil body (length, width and height are less than 50 centimetres more)；It is loaded with cylindrical rigid bucket or square box
Earth material cannot monitor the lateral displacement of the soil body, cannot apply lateral confining pressure；It uses thermal insulation material and is kept the temperature, although thermal insulating material
Material has certain heat insulation function, but thermal insulation material is still thermally conductive materials, causes the temperature loss of pilot system that cannot obtain
To effective control.
It can be seen that design is capable of providing xial feed and lateral confining pressure, there is good thermal insulation property and the soil body can be monitored
The pilot system and method for the large scale soil mass water-Re of lateral deformation-coupling of power-salt four, to scientific research and engineering
Construction is all of great significance.
Invention content
The embodiment of the present invention provides large scale soil mass water-Re-coupling pilot system of power-salt four, which is energy
Enough 1 provides xial feed and lateral confining pressure, has good thermal insulation property and can monitor the large scale soil mass water-of soil lateral
The pilot system of Re-four couplings of power-salt.
The embodiment of the present invention provides large scale soil mass water-Re-coupling pilot system of power-salt four, including：Load frame
Frame, loading system, water charging system, temperature control system, acquisition and control system and formation system；The loading frame includes：
Pillar, the first reaction plate, the second reaction plate and 3rd counter-force plate, the first high-strength bolt and the second high-strength bolt；Described second is anti-
It is provided at least one first high-strength bolt between power plate and the 3rd counter-force plate, and the 3rd counter-force plate is located at described the
Above two reaction plates, the bottom surface of second reaction plate is provided at least one pillar, the bottom of second high-strength bolt
End is across second reaction plate, and neighbouring bottom part is fixed on by the first sealing nut on the second reaction plate, and described second
The top of high-strength bolt passes through first reaction plate, and adjacent top end position is fixed on the first reaction plate by the second sealing nut
On, first reaction plate is located above second reaction plate, and positioned at the lower section of the 3rd counter-force plate；
The loading system includes：The lateral confining pressure loading equipemtn of xial feed loading equipemtn and the soil body of the soil body；The soil
The xial feed loading equipemtn of body includes the hydraulic jack for being placed in the 3rd counter-force plate bottom surface, is placed in hydraulic jack top bottom surface
Load transducer；The xial feed loading equipemtn of the soil body further includes the SERVO CONTROL platform being placed in outside loading frame, institute
It states SERVO CONTROL platform to connect with hydraulic jack and load transducer respectively by electric connection line, the SERVO CONTROL platform is for controlling
Hydraulic jack processed adds unloading to the soil body or maintains constant pressure, and acquires and export the monitoring load of load transducer；The soil
Side includes the balancing gate pit being sealed in the soil body in gas pressure space to confining pressure loading equipemtn, passes through the second reaction plate and pressure
The feed tube that room is connected, feed tube one end are connected with balancing gate pit, and the other end is connected with air compression station, lead to
It crosses air compression station and the lateral confining pressure of the soil body is provided；The balancing gate pit includes the first reaction plate bottom surface and the second counter-force plate top surface, is gone back
Including the steel bucket being placed between the first reaction plate bottom surface and the second counter-force plate top surface；Setting first in the middle part of first reaction plate
Sealing piston set, the first sealing piston set center are equipped with force transmission shaft；
The water charging system includes：Markov bottle, oral siphon, the first permeable stone, the second permeable stone, outlet pipe and the first glass
Glass pipe；First permeable stone, the second permeable stone are separately positioned on the bottom of the soil body, and first permeable stone and second
Permeable stone is arranged in same level, the both ends of the oral siphon respectively with the water outlet of the Markov bottle and described first thoroughly
Water stone is connected to, and the both ends of the outlet pipe are connected to second permeable stone and first glass tube respectively；The Markov bottle
By the second glass tube, body and rubber stopper are constituted, and rubber stopper blocks body, and glass tube passes through the inside of rubber stopper connection Markov bottle
And exterior space；
The temperature control system includes：For warm equipment and heat-preserving equipment；It is described to include and the first permeable stone and for warm equipment
The lower temperature-constant plate that the bottom surface of one permeable stone is in contact, the bottom coohng liquid circulation pipe being connected with lower temperature-constant plate are cold with bottom
But the bottom constant temperature slot that liquid circulation pipe is connected, the lower temperature-constant plate, bottom coohng liquid circulation pipe and bottom constant temperature slot form envelope
Closed loop system；The constant temperature system further includes the upper temperature-constant plate for being placed in soil body top surface, and the top being connected with upper temperature-constant plate is cold
But liquid circulation pipe, the top thermostat being connected with the top coolant liquid circulation pipe, the upper temperature-constant plate, top coolant liquid are followed
Endless tube and top thermostat form closed cycle system；By the way that different operating temperature is arranged to bottom constant temperature slot and top thermostat
Realize the purpose for applying different temperatures gradient to the soil body；Described for warm equipment further includes insulating box, the first temperature probe and second
Temperature probe, the Markov bottle is placed in insulating box and body coiling has bottom coohng liquid circulation pipe, is disposed on insulating box
Control panel and the first temperature probe；First temperature probe monitors the operating temperature of insulating box, the insulating box and the bottom
The operating temperature of thermostat is set as identical, and second temperature probe is arranged in Markov bottle；
The heat-preserving equipment：Include the first vacuum chamber positioned at balancing gate pit top, is located at the second vacuum of balancing gate pit lower part
Room is located at the third vacuum chamber of balancing gate pit side；
First vacuum chamber, the second vacuum chamber and third vacuum chamber are connected by multiple communicating pipes, and described first is true
Empty room is connected with vacuum-pumping tube, and the vacuum-pumping tube is connected with vacuum pumping pump, and the first vacuum is manufactured by opening vacuum pump
Room, the vacuum environment of the second vacuum chamber and third vacuum chamber；
The acquisition and control system includes：Sensor group, data acquisition device and work station；The sensor group packet
The displacement meter for including monitoring soil body overall deformation monitors the laser range sensor of soil lateral, monitors soil body moisture and salt
Divide the water salt sensor of content, monitors the pore water pressure sensor of soil body pore water pressure, the variation of monitoring soil body vertical stress field
Soil pressure cell, monitoring balancing gate pit, the first vacuum chamber, the second vacuum chamber, the pressure sensor of gas pressure in third vacuum chamber；
The data acquisition device is used to acquire the data of the sensor group monitoring, and the work station is for dividing the data of acquisition
Analysis is handled, and the work station includes microcomputer and data processing software；
The formation system includes：The first forming protection bucket being placed on the second reaction plate, is placed in the first forming protection bucket
The second forming protection bucket on top is placed in the third forming protection bucket on the second forming protection bucket top, the first forming protection
Bucket inner wall is glued with rubber membrane, outer wall is respectively arranged with flange, the method for bucket, the second forming protection bucket and third forming protection
Orchid is equipped with screw rod fixing groove, is provided with screw rod mounting hole on second reaction plate, third high-strength bolt passes sequentially through second
Screw rod mounting hole on reaction plate, the screw rod fixing groove on flange realize the first forming protection bucket, the second forming protection bucket
The fixation of protection bucket is shaped with third；Each screw rod fixing groove with high-strength bolt is fixed by the first nut, it is described at
Shape system further includes carrying out hitting the rubber of tying tight real and then that the soil body is made for hitting real equipment and rubber membrane side to the earth material of design
Set.
Preferably, between the first steel lid and the first reaction plate, it is uniformly distributed between the second reaction plate and the second steel lid
It is equipped with the second sealing rubber ring and studdle, and the studdle is screwed high-strength steel screw rod；
Second reaction plate passes through with the first high-strength bolt and the 3rd counter-force plate with the first high-strength bolt
Second nut is fixed；
Between first reaction plate and the first steel bucket, between first reaction plate and the second steel bucket, described
It is arranged with third caulking gum between two reaction plates and the first steel bucket, between second reaction plate and the second steel bucket
Circle；
Between first sealing nut and the second reaction plate, between the second sealing nut and the first reaction plate, third it is close
It is arranged with the 4th sealing rubber ring between envelope nut and the first steel lid, between the 4th sealing nut and the second steel lid.
Preferably, being both provided on the second steel lid, the second reaction plate and lower temperature-constant plate and sealing what screw rod coincide
Threaded perforations, the sealing screw rod is hollow screw, for data line, bottom coohng liquid circulation pipe, oral siphon and water outlet
Pipe across；
It is disposed with the tongs of control Markov bottle flow on the oral siphon, first permeable stone and described second permeable
Fine sand layer is covered on stone.
Preferably, the soil body is the cylinder soil body of diameter 50cm, high 100cm；First reaction plate, the second reaction plate
It is cylindrical steel plate with 3rd counter-force plate；
The first forming protection bucket, the second forming protection bucket and third forming protection bucket are all by two semi-moon shaped steel
Tubbing split forms so that the first forming protection bucket after the soil body is made, the second forming protection bucket and third forming protection bucket are easy
It removes；The first forming protection bucket, the second forming protection bucket and third forming protection barrel side wall are both provided with aspirating hole.
Preferably, the upper temperature-constant plate and lower temperature-constant plate are all made of cylindrical steel plate, the top coolant liquid circulation pipe
A part into balancing gate pit passes through inside the force-transmitting pole；The upper temperature-constant plate and lower temperature-constant plate side are both provided with groove,
By the rubber case of tying tight, the groove on upper temperature-constant plate and lower temperature-constant plate is close by rubber membrane, upper temperature-constant plate and lower temperature-constant plate
Fitting prevents the partial exfoliation of the soil body and the indoor gas intrusion soil body of pressure during experiment.
Preferably, the gas pressure sensor, laser range sensor, soil pressure cell, pore water pressure sensor, water
Salt sensor is 4, the laser range sensor, soil pressure cell, pore water pressure sensor, and water salt sensor distinguishes cloth
It sets on same vertical line, is divided into 20cm between vertical, 4 gas pressure sensors are arranged in the first vacuum chamber, the
Two vacuum chambers, in third vacuum chamber and balancing gate pit；First vacuum chamber includes the first counter-force plate top surface, is placed in the first reaction plate
Center simultaneously coincide the first sealing piston set contacted with the first reaction plate and force transmission shaft, is placed in the of the first counter-force plate top surface top
One steel lid, be placed in the first steel lid center and with steel lid and pass vertical shaft and coincide the second sealing piston set for contacting, be placed in
The first sealing rubber ring between first sealing piston and the second sealing piston set, the top of the second high-strength bolt pass through described the
One steel lid is fixed on the first steel by third sealing nut and covers；
Second vacuum chamber includes the second reaction plate bottom surface, is placed in the second steel lid of the second reaction plate bottom surface lower part,
It is placed in the sealing screw rod of the second reaction plate and the second steel lid center, the sealing screw rod and the second reaction plate and the second steel lid
Coincide contact, the air tight leak in contact position；The bottom end of second high-strength bolt passes through the second steel lid, by the 4th sealing nut
The second steel is fixed on to cover；
The first steel casing is located in the second steel bucket, in the first steel bucket outer wall and the second steel bucket
The section that wall is formed is the third vacuum chamber.
Preferably, the gas pressure sensor, laser range sensor, soil pressure cell, pore water pressure sensor, water
Salt sensor internal is disposed with temperature sensor, plays the role of eliminating individually embedded temperature while temperature correction sensing data
Spend the step in sensor to the soil body.
Preferably, for carrying pure water or the water of prefabricated different salinity in the Markov bottle, the load transducer
Bottom is in contact with the top surface of the force transmission shaft of balancing gate pit, and power transmission steel plate is disposed between the force transmission shaft and upper temperature-constant plate.
Preferably, the xial feed loading equipemtn of the soil body further includes the limit positioned to force transmission shaft in the loading system
Position device, is disposed with limit hole on the force transmission shaft, and the limiting device includes Limit screw, combination nut and precession screw rod,
The Limit screw is fixed on the bottom of 3rd counter-force plate by screw thread vertically, and the combination nut is sleeved on Limit screw, and
The lifting of its position is controlled by the rotation of screw thread, the combination nut bottom is the nut of channel level, and the channel is horizontal
Nut can rotate freely in the horizontal direction, precession screw rod can on the nut of the channel level of combination nut bottom from
By precession, contacted until coincideing with limit hole prefabricated on force transmission shaft.
The embodiment of the present invention provides a kind of soil based on large scale soil mass water-Re-four coupling pilot systems of power-salt
The test method of body water-Re-four couplings of power-salt, which is characterized in that include the following steps：
Step 1, turn-on data acquisition and control system start to acquire the temperature of inside soil body, water salt, stress, pore water
Pressure information, acquires the lateral and vertical deformation information of the soil body, acquires the first vacuum chamber, the second vacuum chamber, in third vacuum chamber
Gas pressure information, acquisition the hydraulic pressure jack pair soil body plus unloading information；
Step 2 keeps oral siphon, outlet pipe and glass tube it is unimpeded, open loading system, servo be arranged by work station
The running parameter of console, make hydraulic jack work until force transmission shaft be in contact with power transmission steel plate, adjust air compression station
Supply gas pressure makes the indoor gas pressure of pressure reach design value, and the work that SERVO CONTROL platform is arranged again by work station is joined
Number makes hydraulic jack carry out dead load consolidation to the soil body, until the consolidation of the soil body reaches stable；
After the completion of step 3, the consolidation of the soil body, by the limiting device fixing force transfer axis positioned to force transmission shaft, limit
Its displacement, and then realize the rigid constraint to body frost heaving；
Step 4 opens vacuum pumping pump, by vacuum action by the first vacuum chamber, the second vacuum chamber and third vacuum chamber
Vacuum pumping state, vacuum state is using the data of gas pressure sensor as basis for estimation；
Step 5 opens bottom constant temperature slot, and according to recharge of ground water temperature to be simulated is designed, bottom cryogenic thermostat is arranged
The operating temperature of slot and insulating box is opened the outer loop pump of bottom constant temperature slot, is led to after bottom constant temperature slot reaches operating temperature
It crosses bottom coohng liquid circulation pipe and insulating box the brackish water in Markov bottle is heated or cooled down, until control panel display temperature
The temperature of degree probe reaches design value and stabilization；
Step 6, the tongs opened on oral siphon supply water, and the brackish water in Markov bottle is made to enter fine sand layer, gas
Body is discharged by the graduated glass pipe being connected to fine sand layer；After observing that gas empties, Markov bottle position is adjusted, Markov bottle is made
With fine sand layer top on a horizontal plane, analog constant level of ground water feeds the soil body for inner glass tube bottom；
Step 7 starts top thermostat, when operating temperature reaches design value, the outer loop of open top part thermostat
Pump, makes the cryogenic media in the thermostat of top pass through top coolant liquid circulation pipe, and upper temperature-constant plate is recycled, frozen to the soil body
Knot, waits for the temperature of inside soil body, water salt, stress, terminates to freeze after pore water pressure and the lateral stabilization of the soil body；
Step 8, the operating temperature for adjusting top thermostat, the temperature setting top that the soil body is melted according to design requirement
The operating temperature of portion's thermostat, when operating temperature reaches design value, the outer loop of open top part thermostat pumps, and keeps top permanent
By top coolant liquid circulation pipe, upper temperature-constant plate is recycled, is melted to the soil body, waited in the soil body cryogenic media in warm slot
Terminate to melt experiment after the temperature in portion, water salt, stress, pore water pressure and the lateral stabilization of the soil body；
Step 9, the freezing and thawing test for such as carrying out the soil body, repeat the 7th step and the 8th step；
Step 10, acquisition and control system obtain and store the temperature in the soil body, water salt, stress, pore water in real time
Pressure and the soil body carry out analysis imaging by the data processing software of work station laterally with vertical deformation information to the data of acquisition
Processing obtains the Dynamic Coupling effect of water-Re-power-salt in the frozen-thaw process of the large scale soil body.
Large scale soil mass water-Re provided by the invention-coupling pilot system of power-salt four has below beneficial to effect
Fruit：
(1), formation system can carry out the large scale soil body (diameter 50cm, height 100) hit real forming, meet embedded pass
The size and pitch requirements of sensor, ensure that the precision of monitoring data.
(2), the present invention can simulate supply of the underground water of the constant temperature perseverance head of different salinity to the soil body, big for studying
Moisture and salt regime rule of the scale soil body under four couplings.
(3), heat-insulated boundary of the vacuum chamber as balancing gate pit and experimental enviroment is devised, experimental enviroment temperature is effectively reduced
Degree rings test data silhouette.
(4), the confining pressure for devising balancing gate pit as the soil body provides device, and gas conduction poor performance in balancing gate pit is conducive to
The formation of soil body frozen-thaw process temperature gradient.
(5), the use in conjunction of temperature control system, loading system and water system more really simulates and freezes salinized soil in season
The ground or the freeze thawing residing for subgrade soil, stress and recharge of ground water environment in area, provide the water-more to tally with the actual situation
Re-power-salt coupling pilot system.
(6), the system can obtain in real time the vertical overall deformation of the soil body, lateral deformation, inside soil body moisture salinity contain
Distribution, pressure distribution, Temperature Distribution, pore water pressure distributed intelligence are measured, is water-Re-power-coupling of salt four of the large scale soil body
Effect study provides technology guarantee.
(7) by the use in conjunction of work station, data acquisition device, sensor group, the automatic collection of test data is realized
And processing, the reliability of data acquisition has been effectively ensured.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the main structure chart of the present invention；
Fig. 3 is that permeable stone of the present invention contacts layout drawing with oral siphon and outlet pipe；
Fig. 4 is present invention sealing screw-rod structure figure；
Fig. 5 is the upper temperature-constant plate structure chart of the present invention；
Fig. 6 is the lower temperature-constant plate structure chart of the present invention；
Fig. 7 is formation system plan view of the present invention；
Fig. 8 is formation system sectional view of the present invention；
Fig. 9 is soil body inner sensor plane of arrangement figure of the present invention.
Explanation is numbered in attached drawing：
2-1~2-3. high-strength bolts, 3. studdles, 4. first vacuum chambers, 5. second vacuum chambers, 6. third vacuum chambers,
7. pressure sensor, 8. balancing gate pits, 9. laser range sensors, 10. soil pressure cells, 12. pore water pressure sensors, 13. water
Salt sensor, 14. communicating pipes, 15. rubber membranes, 16. soil bodys, 17. top temperature-constant plates, bearing plate under 17-1., the upper pressure-bearings of 17-2.
Plate, 17-3. closed cavities, 17-4. load pillars, 18. bottom constant temperature plates, 19. hydraulic jacks, 20. load transducers, 21.
Displacement meter, 22-1~22-2. permeable stones, 23. fine sand layers, 24. sealing screw rods, 24-1. external seal screw rods, 24-2. interior sealings
Screw rod, 25. oral siphons, 26-1. bottom coohng liquid circulation pipes, the tops 26-2. coolant liquid circulation pipe, 27. outlet pipes, 28. take out very
Blank pipe, 29. graduated glass pipes, 30. Markov bottles, 30-1. glass tubes, 31-1~31-2. temperature probes, 32. insulating boxs, 33. controls
Panel processed, 34. tie tight rubber case, 35.CO2 supply pipes, 36-1~36-5. sealing rubber rings, the first reaction plates of 37-1., 37-2.
Second reaction plate, 37-3. 3rd counter-force plates, 38-1~38-2. steel buckets, 39. power transmission steel plates, 40-1. the first sealing piston sets,
40-2. the second sealing piston sets, 41-1~42-2. steel lids, 42. pillars, 43. force transmission shafts, 44. data line connectors,
45. pipe joint, 46. seal gaskets, 47. fluid sealants, 49. aspirating holes, 51. flanges, 52. screw rod locating slots, 53-1. first at
Shape protects bucket, the forming protection buckets of 53-2. second, 53-3. thirds forming protection bucket, 54. screw rod mounting holes, 55-1~55-2. spiral shells
Mother, 56-2. Limit screws, 56-3. combination nuts, 56-4 precession screw rods.
Specific implementation mode
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that of the invention
Protection domain be not restricted by specific implementation.
Fig. 1 illustratively shows large scale soil mass water-Re provided in an embodiment of the present invention-coupling of power-salt four
The functional block diagram of pilot system, specifically as shown in Figure 1, the large scale soil mass water-Re-coupling pilot system of power-salt four
Including：Loading frame 100, loading system 200, water charging system 300, temperature control system 400,500 He of acquisition and control system
Formation system 600；The loading frame 100 is for carrying loading system 200, water charging system 300, temperature control system 400, data acquisition
With control system 500 and formation system 600；The loading system 200, for applying xial feed and confining pressure to the soil body 16；The benefit
Water system 300 feeds the soil body 16 for simulating different salt content and head；The temperature control system 400, for the soil body 16
Frozen-thawed cycled and water charging system constant temperature water supply, the acquisition and control system 500, for the temperature and water of the soil body 16
Salt content, pressure, pore water pressure, lateral and vertical deformation information, and to loading system 200 and the temperature control system 400
Gas pressure monitored in real time, and acquire and processing the soil body 16 temperature and water salt content, pressure, pore water pressure, side
To the gas pressure with vertical deformation information and loading system 200 and the temperature control system 400；The formation system 600 is used
In carrying out hitting reality to preconfigured earth material and be modelled as testing the soil body 16 used.
Fig. 2 is the main structure chart of the present invention, as shown in Fig. 2, the loading frame 100 includes：Pillar 42, the first reaction plate
37-1, the second reaction plate 37-2 and 3rd counter-force plate 37-3, the first high-strength bolt 2-1 and the second high-strength bolt 2-2；This is second anti-
At least one first high-strength bolt 2-1, and 3rd counter-force plate 37- are provided between power plate 37-2 and 3rd counter-force plate 37-3
3 are located above second reaction plate 37-2, and the bottom surface of second reaction plate 37-2 is provided at least one pillar 42, this second
The bottom end of high-strength bolt 2-2 passes through second reaction plate 37-2, and neighbouring bottom part is fixed on second by the first sealing nut
On reaction plate 37-2, the top of second high-strength bolt 2-2 passes through first reaction plate 37-1, and adjacent top end position is by second
Sealing nut is fixed on the first reaction plate 37-1, and first reaction plate 37-1 is located above second reaction plate 37-2, and position
In the lower section of 3rd counter-force plate 37-3.
In present example, loading frame provides counter-force and support, and the component part of loading frame for loading system
The composition of temperature control system is also assisted in, while being also connected with water charging system, acquisition and control system, formation system, is entire
The skeleton of pilot system.
In the embodiment of the present invention, the soil body 16 is the cylinder soil body of diameter 50cm, high 100cm, the first reaction plate 37-1, second
Reaction plate 37-2 and 3rd counter-force plate 37-3 is cylindrical steel plate.
Specifically, as shown in Figure 1, the loading system 200 includes：16 side of xial feed loading equipemtn and the soil body of the soil body 16
To confining pressure loading equipemtn；The xial feed loading equipemtn of the soil body 16 includes the hydraulic pressure thousand for being placed in the bottom surfaces 3rd counter-force plate 37-3
Jin top 19, is placed in the load transducer 20 of 19 bottom surface of hydraulic jack；The xial feed loading equipemtn of the soil body 16 further includes setting
SERVO CONTROL platform outside loading frame, the SERVO CONTROL platform are passed with hydraulic jack 19 and load respectively by electric connection line
Sensor 20 connects, which acquires for controlling hydraulic jack 19 to the soil body 16 plus unloading or maintaining constant pressure
With the monitoring load of output load transducer 20；The 16 lateral confining pressure loading equipemtn of the soil body includes that the soil body 16 is sealed in gas pressure
Balancing gate pit 8 in power space, the feed tube 35 being connected with balancing gate pit 8 across the second reaction plate 37-2, feed tube
35 one end are connected with balancing gate pit 8, and the other end is connected with air compression station, and providing the soil body 16 by air compression station laterally encloses
Pressure；The balancing gate pit 8 includes the first bottom surfaces reaction plate 37-1 and the second top surfaces reaction plate 37-2, further includes being placed in the first reaction plate
Steel bucket 38-1 between the bottom surfaces 37-1 and the second top surfaces reaction plate 37-2；The first sealing of setting in the middle part of first reaction plate 37-1
Piston bush 40-1, first sealing piston cover the centers 40-1 and are equipped with force transmission shaft 43.
Fig. 3 is that permeable stone of the present invention contacts layout drawing, as shown in figs. 1 and 3, the water charging system with oral siphon and outlet pipe
300 include：Markov bottle 30, oral siphon 25, the first permeable stone 22-1, the second permeable stone 22-2, outlet pipe 27, the first glass tube
29；First permeable stone 22-1, the second permeable stone 22-2 are separately positioned on the bottom of the soil body 16, and first permeable stone 22-1
Be arranged in same level with the second permeable stone 22-2, the both ends of the oral siphon 25 respectively with the water outlet of the Markov bottle 30 and
First permeable stone 22-1 connections, the both ends of the outlet pipe 27 connect with the second permeable stone 22-2 and first glass tube 29 respectively
It is logical；The first glass tube 29 can show delivery head of the Markov bottle 30 to the soil body 16 as a result, and can be played during testing
The effect of drainage exhaust.
Wherein, the tongs of control 30 flow of Markov bottle are disposed on oral siphon 25, the Markov bottle 30 is by the second glass tube
30-1, body and rubber stopper 30-2 are constituted, and rubber stopper 30-2 blocks body, and the second glass tube 30-1 passes through rubber stopper 30-2 connections
The inside and outside space of Markov bottle 30.Water in Markov bottle 30 can be pure water or the water of prefabricated different salinity, realize and mend
The supply of the different salt content water of water system, the Markov bottle principle of Markov bottle 30 may be implemented permanent head and supply water.
In addition, in the embodiment of the present invention, fine sand layer is covered on the first permeable stone 22-1 and second permeable stone 22-2
23, fine sand layer 23, the first permeable stone 22-1 and the second permeable stone 22-2 constitute the moisturizing chamber of the soil body 16, and it is aqueous to play moisturizing
The effect of layer, while playing the role of loaded filter so that outlet pipe 27 with when the first glass tube 29 progress drainage exhaust not because
The fine grain entrance of powder in the soil body 16 and block.
It should be noted that the first glass tube 29 carries scale.
Specifically, as shown in Figure 1, the temperature control system 400 includes：For warm equipment and heat-preserving equipment；This includes for warm equipment
The lower temperature-constant plate 18 being in contact with the bottom surface of the first permeable stone 22-1 and the first permeable stone 22-2 is connected with lower temperature-constant plate 18
Bottom coohng liquid circulation pipe 26-1, the bottom constant temperature slot being connected with bottom coohng liquid circulation pipe 26-1, the lower temperature-constant plate 18,
Bottom coohng liquid circulation pipe 26-1 and bottom constant temperature slot form closed cycle system；The constant temperature system further includes being placed in the top of the soil body 16
The upper temperature-constant plate 17 in face, the top coolant liquid circulation pipe 26-2 being connected with upper temperature-constant plate 17, with the top coolant liquid circulation pipe
The top thermostat that 26-2 is connected, temperature-constant plate 17 on this, top coolant liquid circulation pipe 26-2 and top thermostat form closing
The circulatory system；It is realized to the application different temperatures of the soil body 16 by the way that different operating temperature is arranged to bottom constant temperature slot and top thermostat
The purpose of gradient；This further includes that the insulating box 32 of isoperibol, the horse are provided for Markov bottle 30 in the water charging system for warm equipment
Family name's bottle 30 is placed in insulating box 32 and body coiling has bottom coohng liquid circulation pipe 26-1, and control plane is disposed on insulating box 32
Plate 33 and the first temperature probe 31-1；The operating temperature of first temperature probe 31-2 monitoring insulating box 32, the insulating box 32 with should
The operating temperature of bottom constant temperature slot is set as identical, and second temperature probe 31-1 is used to monitor the temperature of water salt liquid in Markov bottle 30
Degree, realizes the constant temperature water supply of water charging system；The heat-preserving equipment：Include the first vacuum chamber 4 positioned at 8 top of balancing gate pit, is located at pressure
Second vacuum chamber 5 of 8 lower part of power room is located at the third vacuum chamber 6 of 8 side of balancing gate pit；First vacuum chamber 4, the second vacuum chamber 5
It is connected by multiple communicating pipes 14 with third vacuum chamber 6, which is connected with vacuum-pumping tube 28, this is vacuumized
Pipe 28 is connected with vacuum pumping pump, and the first vacuum chamber 4 is manufactured by opening vacuum pump, the second vacuum chamber 5 and third vacuum chamber 6
Vacuum environment.
Wherein, which includes the first top surfaces reaction plate 37-1, is placed in the first centers reaction plate 37-1 and with the
One reaction plate 37-1 and the first sealing piston of the identical contact of force transmission shaft 43 cover 40-1, are placed in the first top surfaces reaction plate 37-1 top
The first steel lid 41-1, be placed in the first steel centers lid 41-1 and with steel lid 41-1 and pass vertical shaft 43 and coincide the contacted
Two sealing pistons cover 40-2, the first sealing rubber ring being placed between the first sealing piston 40-1 and the second sealing piston set 40-2
The top of 36-4, the second high-strength bolt 2-2 pass through first steel lid 41-1, and the first steel lid is fixed on by third sealing nut
On 41-1；Second vacuum chamber 5 includes the second bottom surfaces reaction plate 37-2, is placed in the second steel of the second bottom surfaces reaction plate 37-2 lower part
System lid 41-2, is placed in the sealing screw rod 24 of the second reaction plate 37-2 and the second centers steel lid 41-2, the sealing screw rod 24 and the
Two reaction plate 37-2 and the second steel lid 41-2, which coincide, to be contacted, the air tight leak in contact position；It wears the bottom end of second high-strength bolt 2-2
Second steel lid 41-2 is crossed, is fixed on the second steel lid 41-2 by the 4th sealing nut；First steel bucket 38-1 is arranged
In the second steel bucket 38-2, section that the first steel bucket 38-1 outer walls and the second steel bucket 38-2 inner walls are formed be this
Three vacuum chambers 6.
Wherein, the first forming protection bucket 53-1, the second forming protection bucket 53-2 and third forming protection bucket 53-3 are
It is made of two semi-moon shaped steel bucket splits so that the first forming protection bucket 53-1 after the soil body 16, the second forming protection is made
Bucket 53-2 and third forming protection bucket 53-3 are easy to remove；The first forming protection bucket 53-1, the second forming protection bucket 53-2 and
Third forming protection bucket 53-3 side walls are both provided with aspirating hole 49.
The acquisition and control system 500 includes：Sensor group, data acquisition device and work station；The sensor group packet
The displacement meter 21 of monitoring 16 overall deformation of the soil body is included, the laser range sensor 9 of 16 lateral deformation of the soil body is monitored, monitors the soil body 16
The water salt sensor 13 of moisture and salt content monitors the pore water pressure sensor 12 of 16 pore water pressure of the soil body, monitors the soil body
The soil pressure cell 10 of 16 vertical stress fields variation, monitoring balancing gate pit 8, the first vacuum chamber 4, the second vacuum chamber 5, third vacuum chamber 6
The pressure sensor 7 of middle gas pressure；The data acquisition device is used to acquire the data of sensor group monitoring, which is used for
Analyzing processing is carried out to the data of acquisition, which includes microcomputer and data processing software.
In the embodiment of the present invention, the sensor in sensor group is connected by data line with data acquisition device, data
Vasculum is connected by data line with work station, and the data acquiring frequency for the stand control data acquisition device that works, data are passed through
Vasculum acquires the data by Sensor monitoring and data transmission line, soft by the microcomputer and data processing of work station
Part carries out analysis imaging to the data of acquisition.
Further, as shown in Fig. 2, Fig. 7 and Fig. 8, which includes：It is placed on the second reaction plate 37-2
First forming protection bucket 53-1 is placed in the second forming protection bucket 53-2 on the tops the first forming protection bucket 53-1, is placed in the second one-tenth
Shape protects the third forming protection bucket 53-3 on the tops bucket 53-2, the first forming protection bucket 53-1, the second forming protection bucket 53-2
Bucket 53-3 inner walls are glued with rubber membrane 15, outer wall is respectively arranged with flange 51 with third forming protection, which is equipped with
Screw rod fixing groove 52 is provided with screw rod mounting hole 54 on second reaction plate 37-2, and third high-strength bolt 2-3 passes sequentially through second
Screw rod mounting hole 54 on reaction plate 37-2, the screw rod fixing groove 52 on flange 51 realize first forming protection bucket 53-1, the
The fixation of two forming protection bucket 53-2 and third forming protection bucket 53-3；Each screw rod fixing groove 52 and high-strength bolt 2-3 are equal
It is to be fixed by the first nut 55-2, which further includes carrying out hitting real to the earth material of design and then the soil body 16 being made
The rubber case 34 of tying tight for hitting 15 side of real equipment and rubber membrane.
In the present embodiment, it is manual compaction hammer to hit real equipment, is divided into 2.5kg hammers weight and 4.5kg hammer weights.
First forming protection bucket 53-1, the second forming protection bucket 53-2 and third forming protection bucket 53-3 is by two and half
The steel bucket split composition of month shape so that be made after the soil body 16 first forming protection bucket 53-1, the second forming protection bucket 53-2 and
Third forming protection bucket 53-3 is easy to remove；First forming protection bucket 53-1, the second forming protection bucket 53-2 and third forming are protected
Shield bucket 53-3 side walls are both provided with aspirating hole 49, allow the forming of rubber membrane 15 and first to protect bucket 53-1 by pumping, the
Two forming protection bucket 53-2 and third forming protection bucket 53-3 forming systems of combining closely further include making rubber after the soil body 16 is made
The rubber case 34 of tying tight that film 15 is fitted closely with upper temperature-constant plate 17 and lower temperature-constant plate 18.
Further, between the first steel lid 41-1 and the first reaction plate 37-1, the second reaction plate 37-2 and the second steel
The second sealing rubber ring 36-3 and studdle 3 are arranged between system lid 41-2, and the studdle 3 is screwed height
Strong steel screw rod；The second reaction plate 37-2 and the first high-strength bolt 2-1 and the high-strength spiral shells of 3rd counter-force plate 37-3 and first
Bar 2-1 is fixed by the second nut 55-1；Between the first reaction plate 37-1 and the first steel bucket 38-1, first counter-force
Between plate 37-1 and the second steel bucket 38-2, between the second reaction plate 37-2 and the first steel bucket 38-1, second reaction plate
It is arranged with third sealing rubber ring 36-1 between 37-2 and the second steel bucket 38-2；First sealing nut and the second reaction plate
Between 37-2, between the second sealing nut and the first reaction plate 37-1, between third sealing nut and the first steel lid 41-1,
It is arranged with the 4th sealing rubber ring 36-2 between four sealing nuts and the second steel lid 41-2.
Further, as shown in figure 4, being all provided on the second steel lid 41-2, the second reaction plate 37-2 and lower temperature-constant plate 18
The threaded perforations identical with sealing screw rod 24 are equipped with, which is hollow screw, for data line, bottom coohng
Liquid circulation pipe 26-1, oral siphon 25 and outlet pipe 27 pass through.
Specifically, as shown in figure 4, envelope screw rod 24 includes the external seal screw rod 24-1 and interior sealing screw rod 24- of inner hollow
2；The internal diameter of external seal screw rod 24-1 is more than the outer diameter of interior sealing screw rod 24-2, is shorter in length than interior sealing screw rod 24-2；Interior sealing
It is disposed with bottom coohng liquid circulation pipe 26-1, oral siphon 25 and outlet pipe 27 between screw rod 24-2 and external seal screw rod 24-1, enters
The both ends of 27 pipeline of water pipe 25 and outlet pipe are disposed with pipe joint 45；It is disposed with data line in interior sealing screw rod 24-2,
The data line connector 44 that data transmission line end is disposed with；All cloth outside interior sealing screw rod 24-2 and external seal screw rod 24-1
It is equipped with sealing nut 48-2, and all carries seal gasket 46 on nut 48-2；External seal screw rod 24-1 and interior sealing screw rod 24-
It is all sealed by fluid sealant 47 inside 2；Pass through data line connector 44, pipe joint 45, hollow external seal screw rod
24-1 and interior sealing screw rod 24-2, the also use of fluid sealant 47 so that do not have to reseal when more emat sensor and pipeline, side
System assembling and sealing.
Further, as shown in Figure 2 and Figure 5, temperature-constant plate 17 and lower temperature-constant plate 18 are all made of cylindrical steel plate on this, into
The part for entering the top coolant liquid circulation pipe 26-2 in balancing gate pit 8 passes through inside the force-transmitting pole 43；Temperature-constant plate 17 is under on this
18 side of temperature-constant plate is both provided with groove, and by the rubber case 34 of tying tight, the groove on upper temperature-constant plate 17 and lower temperature-constant plate 18 will
Rubber membrane 15, upper temperature-constant plate 17 and lower temperature-constant plate 18 fit closely, and prevent the partial exfoliation of the soil body 16 and balancing gate pit 8 during experiment
Interior gas invades the soil body 16.
In the embodiment of the present invention, top coolant liquid circulation pipe 26-2 is divided into six sections, wherein two sections of connection top thermostats,
Two sections pass through inside force-transmitting pole 43, and two sections are located on upper temperature-constant plate 17 and are connected with the closed cavity 17-3 of upper temperature-constant plate 17,
Six sections of coolant liquid circulation pipe 26-2 are connected to by prefabricated connector.
As shown in figure 5, top constant temperature version 17 include the fixed lower bearing plate 17-1 of sequence, sealing rubber ring 36-5, on hold
Closed cavity 13, lower bearing plate 17-1 and upper bearing plate are formed among pressing plate 17-2, lower bearing plate 17-1 and upper bearing plate 17-2
Load pillar 17-4 be there also is provided between 17-2 for transmitting load.
Further, as shown in fig. 6, being provided with copper coil pipe 18-1, copper coil pipe 18-1 and bottom in lower temperature-constant plate 18
Coolant liquid circulation pipe 26-1 is connected, and fixed oral siphon 25, outlet pipe 27, bottom coohng liquid are disposed on lower temperature-constant plate 18
Circulation pipe 26-1, the channel of interior sealing screw rod 24-2.
Further, as shown in Figure 2 and Figure 9, gas pressure sensor 7, laser range sensor 9, soil pressure cell 10, hole
Gap water pressure sensor 12, water salt sensor 13 is 4, and is arranged on same vertical line, and 20cm is divided between vertical,
4 gas pressure sensors 7 are arranged in the first vacuum chamber 4, the second vacuum chamber 5, third vacuum chamber 6 and balancing gate pit 8.
In the embodiment of the present invention, gas pressure sensor 7, laser range sensor 9, soil pressure cell 10, pore water pressure
Sensor 12 is disposed with temperature sensor inside water salt sensor 13, plays the role of saving while temperature correction sensing data
It has gone individually to bury temperature sensor to the step in the soil body 16, has saved the time, improve testing efficiency.
Further, the gas pressure sensor 7, laser range sensor 9, soil pressure cell 10, pore water pressure sensing
Device 12, water salt sensor 13 are 4, the laser range sensor 9, soil pressure cell 10, pore water pressure sensor 12, water salt
Sensor 13 is arranged on same vertical line, is divided into 20cm between vertical, which is arranged in
First vacuum chamber 4, the second vacuum chamber 5, in third vacuum chamber 6 and balancing gate pit 8.
Further, the top surface of the force transmission shaft 43 of the bottom with balancing gate pit 8 of the load transducer 20 is in contact, the force transmission shaft
Power transmission steel plate 39 is disposed between 43 and upper temperature-constant plate 17.
Further, the xial feed loading equipemtn of the soil body 16 further includes being carried out to force transmission shaft 43 in the loading system 200
The limiting device of positioning is disposed with limit hole on the force transmission shaft 43, which includes Limit screw 56-2, combination nut
56-3 and precession screw rod 56-4, Limit screw 56-2 are fixed on the bottom of 3rd counter-force plate 37-3, the group by screw thread vertically
It closes nut 56-3 to be sleeved on Limit screw 56-2, and controls the lifting of its position, combination nut 56-3 by the rotation of screw thread
Bottom is the nut of channel level, and the nut of channel level can rotate freely in the horizontal direction, and precession screw rod 56-4 can
With the free precession on the nut of the channel level of the bottoms combination nut 56-3, until being kissed with limit hole prefabricated on force transmission shaft 43
Splice grafting touches, and achievees the purpose that limit 43 position of force-transmitting pole.
Formation system provided in this embodiment based on large scale soil mass water-Re-four coupling pilot systems of power-salt
The manufacturing process of the soil body 16 be：
S1, on the second reaction plate 37-2 place under temperature-constant plate 18 and permeable stone 22-1~22-2.
S2, the number being pierced by interior sealing screw rod 24-2 is connected by the sensor data transmission line in the ready soil body 16
According to transmission line connector 44.
S3, the screw rod locating slot 52 and the second reaction plate 37-2 on flange 51 are passed through by high-strength bolt 2-3 and nut 55-2
On screw rod mounting hole 54 fix the first forming protection bucket 53-1 and rubber membrane 15；15 length 120cm of rubber membrane, by rubber membrane 15
Extra rolled length is sleeved on the outside of the first forming protection bucket 53-1, and makes rubber membrane 15 using aspirating hole 49 and air-extractor
Is fitted closely with the first forming protection bucket 52-1.
S4, it after installing thickness 5cm fine sand layers 23 additional, is layered and hits real design earth material, related transducer is buried in design height
Device.
S5, complete the first forming protection bucket 53-1 hit real height after, discharge the length degree for the rubber membrane 15 rolled
To the second forming protection bucket 53-2, the second forming protection bucket 53-2 is installed additional, the additional length of rubber membrane 15 is sleeved on the second forming guarantor
The outside of bucket 53-2 is protected, and so that the forming protection of rubber membrane 15 and second bucket 53-2 is closely pasted using aspirating hole 49 and air-extractor
It closes；It installs earth material additional, carries out layering and hit reality, bury sensor.
S6, complete the second forming protection bucket 53-2 hit real height after, discharge all length for the rubber membrane 15 rolled
Degree installs third forming protection bucket 53-3 additional, and so that rubber membrane 15 and third is shaped protection bucket using aspirating hole 49 and air-extractor
53-3 is fitted closely, and installs earth material additional, is continued layering and is hit real and embedded sensor, until hitting real height distance third forming protection bucket
10cm at the top of 53-3, the upper temperature-constant plate 17 of installations, so far, the reality of hitting for completing the soil body 16 shape.
S7, complete the soil body 16 hit real forming after, the nut 55-2 that gradually dismantles, flange 51, high-strength bolt 2-3, the first one-tenth
Shape protects bucket 53-1, the second forming protection bucket 53-2, third forming protection bucket 53-3.
S8, rubber membrane 15 is made to be fitted closely respectively with upper temperature-constant plate 17 and lower temperature-constant plate 18 with rubber case 34 of tying tight.
The present embodiment does not compare the large scale soil body frozen-thaw process water-Re-coupling of power-salt four examination being readily understood by
The assembling process of check system is introduced.
The present invention provides a kind of soil mass water-heat-of large scale soil mass water-Re-coupling pilot system of power-salt four
The test method of four couplings of power-salt, which is characterized in that include the following steps：
Step 1, turn-on data acquisition and control system, start acquire the soil body 16 inside temperature, water salt, stress, hole
Hydraulic pressure force information acquires the lateral and vertical deformation information of the soil body 16, acquires the first vacuum chamber 4, the second vacuum chamber 5, third is true
Gas pressure information in empty room 6, acquisition hydraulic jack 19 add unloading information to the soil body 16.
Step 2 keeps oral siphon 25, outlet pipe 27 and graduated glass pipe 29 it is unimpeded, open loading system, pass through work
Stand setting SERVO CONTROL platform running parameter, make hydraulic jack 19 work until force transmission shaft 43 be in contact with power transmission steel plate 39,
Adjusting the supply gas pressure of air compression station makes the gas pressure in balancing gate pit 8 reach design value, is watched again by work station setting
The running parameter for taking console makes hydraulic jack 19 carry out dead load consolidation to the soil body 16, until the consolidation of the soil body 16 reaches stable
After the completion of step 3, the consolidation of the soil body 16, pass through the limiting device fixing force transfer axis positioned to force transmission shaft 43
43, its displacement is limited, and then realize the rigid constraint to 16 frost heave of the soil body.
Step 4 opens vacuum pumping pump, by vacuum action by the first vacuum chamber 4, the second vacuum chamber 5 and third vacuum
6 vacuum pumping state of room, vacuum state is using the data of gas pressure sensor 7 as basis for estimation.
Step 5 opens bottom constant temperature slot, and according to recharge of ground water temperature to be simulated is designed, bottom cryogenic thermostat is arranged
The operating temperature of slot and insulating box 32 opens the outer loop pump of bottom constant temperature slot after bottom constant temperature slot reaches operating temperature,
The brackish water in Markov bottle 30 is heated or cooled down by bottom coohng liquid circulation pipe 26-1 and insulating box 32, until control
The temperature of 33 displays temperature probe 31-1 of panel reaches design value and stabilization.
Note：When adjusting the moisturizing temperature of water charging system, the function of the outer loop pump of bottom constant temperature slot is applied, because
Bottom constant temperature slot, bottom coohng liquid circulation pipe 26-1 and lower temperature-constant plate 18 form closed cycle system, so this step is also set
The operating temperature of lower temperature-constant plate 18 is set, the operating temperature of the lower temperature-constant plate 18 of setting is identical as the supply water temperature of Markov bottle 30.
Step 6, the tongs opened on oral siphon 25 supply water, and the brackish water in Markov bottle 30 is made to enter fine sand layer
23, gas is discharged by the graduated glass pipe 29 being connected to fine sand layer 23；After observing that gas empties, Markov bottle 30 is adjusted
It sets, makes 30 bottoms inner glass tube 30-1 of Markov bottle with 23 top of fine sand layer on a horizontal plane, analog constant level of ground water
Feed the soil body 16.
Note：The underground water head recharge altitude simulated at this time is equivalent to the liquid level distance in Markov bottle 30 when opening tongs
The height of the bottoms glass tube 30-1.
Step 7 starts top thermostat, when operating temperature reaches design value, the outer loop of open top part thermostat
Pump makes the cryogenic media in the thermostat of top pass through top coolant liquid circulation pipe 26-2, and upper temperature-constant plate 17 is recycled, to the soil body
16 are freezed, and wait for temperature inside the soil body 16, water salt, stress, are terminated after pore water pressure and the lateral stabilization of the soil body
Freeze.
Step 8, the operating temperature for adjusting top thermostat, the temperature setting that the soil body 16 is melted according to design requirement
The operating temperature of top thermostat, when operating temperature reaches design value, the outer loop of open top part thermostat pumps, and makes top
By top coolant liquid circulation pipe 26-2, upper temperature-constant plate 17 is recycled, is melted to the soil body 16 cryogenic media in thermostat
Change, wait for the temperature soil body 16 inside, water salt, stress, terminates to melt after pore water pressure and the lateral stabilization of the soil body and test.
Step 9, the freezing and thawing test for such as carrying out the soil body 16, repeat the 7th step and the 8th step.
Step 10, acquisition and control system obtain and store the temperature in the soil body 16, water salt, stress, hole in real time
Water pressure and the soil body 16 analyze the data of acquisition by the data processing software of work station laterally with vertical deformation information
Imaging obtains the Dynamic Coupling effect of water-Re-power-salt in the frozen-thaw process of the large scale soil body.
The advantageous effect of large scale soil mass water-Re provided by the invention-coupling pilot system of power-salt four and method
For：(1), formation system can carry out the large scale soil body (diameter 50cm, height 100) hit real forming, meet and bury sensor
Size and pitch requirements, ensure that the precision of monitoring data；(2), the present invention can simulate the constant temperature perseverance head of different salinity
Supply of the underground water to the soil body, for studying moisture and salt regime rule of the large scale soil body under four couplings；(3), it sets
Heat-insulated boundary of the vacuum chamber as balancing gate pit and experimental enviroment has been counted, has effectively reduced test ambient temperature to test data side
It influences；(4), the confining pressure for devising balancing gate pit as the soil body provides device, and gas conduction poor performance in balancing gate pit is conducive to the soil body
The formation of frozen-thaw process temperature gradient；(5), the use in conjunction of temperature control system, loading system and water system, more true mould
The ground or the freeze thawing residing for subgrade soil, stress and recharge of ground water environment that freeze saline soil area in season are intended, have provided and more accord with
Close water-Re-power-salt coupling pilot system of actual conditions；(6), the system can obtain the soil body and vertically integrally become in real time
Shape, lateral deformation, the distribution of moisture salt content, pressure distribution, Temperature Distribution, the pore water pressure distributed intelligence of inside soil body,
Technology guarantee is provided for the water-Re-power-coupling of salt four research of the large scale soil body；(7) it is adopted by work station, data
The use in conjunction of header, sensor group realizes automatic collection and the processing of test data, be effectively ensured data acquisition can
By property.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. the large scale soil mass water-Re-coupling pilot system of power-salt four, which is characterized in that including：Loading frame
(100), loading system (200), water charging system (300), temperature control system (400), acquisition and control system (500) and forming
System (600)；The loading frame (100) includes：Pillar (42), the first reaction plate (37-1), the second reaction plate (37-2) and
3rd counter-force plate (37-3), the first high-strength bolt (2-1) and the second high-strength bolt (2-2)；Second reaction plate (37-2) with
At least one first high-strength bolt (2-1), and the 3rd counter-force plate (37- are provided between the 3rd counter-force plate (37-3)
3) it is located above second reaction plate (37-2), the bottom surface of second reaction plate (37-2) is provided at least one branch
Column (42), the bottom end of second high-strength bolt (2-2) pass through second reaction plate (37-2), and neighbouring bottom part is by the
One sealing nut is fixed on the second reaction plate (37-2), and the top of second high-strength bolt (2-2) is anti-across described first
Power plate (37-1), and adjacent top end position is fixed on by the second sealing nut on the first reaction plate (37-1), first counter-force
Plate (37-1) is located above second reaction plate (37-2), and positioned at the lower section of the 3rd counter-force plate (37-3)；
The loading system (200) includes：The lateral confining pressure load of the xial feed loading equipemtn and the soil body (16) of the soil body (16) is set
It is standby；The xial feed loading equipemtn of the soil body (16) includes the hydraulic jack for being placed in the bottom surface the 3rd counter-force plate (37-3)
(19), it is placed in the load transducer (20) of hydraulic jack (19) bottom surface；The xial feed loading equipemtn of the soil body (16) is also
Including the SERVO CONTROL platform being placed in outside loading frame, the SERVO CONTROL platform by electric connection line respectively with hydraulic jack
(19) and load transducer (20) connection, the SERVO CONTROL platform add unloading for controlling hydraulic jack (19) to the soil body (16)
Or constant pressure is maintained, and acquire and export the monitoring load of load transducer (20)；The lateral confining pressure load of the soil body (16) is set
Standby includes the balancing gate pit (8) being sealed in the soil body (16) in gas pressure space, passes through the second reaction plate (37-2) and balancing gate pit
(8) feed tube (35) being connected, feed tube (35) one end are connected with balancing gate pit (8), the other end and air pressure
Contracting station is connected, and the soil body (16) lateral confining pressure is provided by air compression station；The balancing gate pit (8) includes the first reaction plate (37-
1) bottom surface and the top surface the second reaction plate (37-2), further include being placed in the first reaction plate bottom surface (37-1) and the second reaction plate (37-2)
Steel bucket (38-1) between top surface；First sealing piston set (40-1) is set in the middle part of first reaction plate (37-1), it is described
First center sealing piston set (40-1) is equipped with force transmission shaft (43)；
The water charging system (300) includes：Markov bottle (30), oral siphon (25), the first permeable stone (22-1), the second permeable stone
(22-2), outlet pipe (27) and the first glass tube (29)；First permeable stone (22-1), the second permeable stone (22-2) are respectively
Bottom in the soil body (16) is set, and first permeable stone (22-1) and the second permeable stone (22-2) are arranged in same water
In plane, the both ends of the oral siphon (25) respectively with the water outlet of the Markov bottle (30) and first permeable stone (22-1)
Connection, the both ends of the outlet pipe (27) are connected to second permeable stone (22-2) and first glass tube (29) respectively；
The Markov bottle (30) is made of the second glass tube (30-1), body and rubber stopper (30-2), and rubber stopper (30-2) blocks body,
Glass tube (30-1) passes through the inside and outside space of rubber stopper (30-2) connection Markov bottle (30)；
The temperature control system (400) includes：For warm equipment and heat-preserving equipment；It is described to include and the first permeable stone (22- for warm equipment
1) the lower temperature-constant plate (18) being in contact with the bottom surface of the first permeable stone (22-2), the bottom being connected with lower temperature-constant plate (18) are cold
But liquid circulation pipe (26-1), the bottom constant temperature slot being connected with bottom coohng liquid circulation pipe (26-1), the lower temperature-constant plate (18),
Bottom coohng liquid circulation pipe (26-1) and bottom constant temperature slot form closed cycle system；The constant temperature system further includes being placed in the soil body
(16) the upper temperature-constant plate (17) of top surface, the top coolant liquid circulation pipe (26-2) being connected with upper temperature-constant plate (17), with the top
The top thermostat that portion coolant liquid circulation pipe (26-2) is connected, the upper temperature-constant plate (17), top coolant liquid circulation pipe (26-
2) and top thermostat forms closed cycle system；It is real by the way that different operating temperature is arranged to bottom constant temperature slot and top thermostat
Now apply the purpose of different temperatures gradient to the soil body (16)；Described for warm equipment further includes insulating box (32), the first temperature probe
(31-2) and second temperature probe (31-1), the Markov bottle (30) is placed in insulating box (32) and body coiling has bottom cold
But liquid circulation pipe (26-1) is disposed with control panel (33) and the first temperature probe (31-1) on insulating box (32)；First temperature
Probe (31-2) monitors the operating temperature of insulating box (32), and the insulating box (32) and the operating temperature of the bottom constant temperature slot are set
It is set to identical, second temperature probe (31-1) setting is in the Markov bottle (30)；
The heat-preserving equipment：The first vacuum chamber (4) including being located at balancing gate pit (8) top is located at the second of balancing gate pit (8) lower part
Vacuum chamber (5) is located at the third vacuum chamber (6) of balancing gate pit (8) side；
First vacuum chamber (4), the second vacuum chamber (5) and third vacuum chamber (6) are connected by multiple communicating pipes (14), institute
It states the first vacuum chamber (4) with vacuum-pumping tube (28) to be connected, the vacuum-pumping tube (28) is connected with vacuum pumping pump, by open-minded
Vacuum pump manufactures the first vacuum chamber (4), the vacuum environment of the second vacuum chamber (5) and third vacuum chamber (6)；
The acquisition and control system (500) includes：Sensor group, data acquisition device and work station；The sensor group
Displacement meter (21) including monitoring the soil body (16) overall deformation, monitors the laser range sensor (9) of the soil body (16) lateral deformation,
The water salt sensor (13) of the soil body (16) moisture and salt content is monitored, the pore water pressure of the monitoring soil body (16) pore water pressure passes
Sensor (12), the soil pressure cell (10) of the monitoring soil body (16) vertical stress field variation, monitoring balancing gate pit (8), the first vacuum chamber
(4), the second vacuum chamber (5), the pressure sensor (7) of gas pressure in third vacuum chamber (6)；The data acquisition device is for adopting
Collect the data of the sensor group monitoring, the work station is used to carry out analyzing processing, the work station packet to the data of acquisition
Include microcomputer and data processing software；
The formation system (600) includes：The first forming protection bucket (53-1) being placed on the second reaction plate (37-2), is placed in the
The second forming protection bucket (53-2) on one forming protection top bucket (53-1), is placed in the of the second forming protection top bucket (53-2)
Three forming protection buckets (53-3), the first forming protection bucket (53-1), the second forming protection bucket (53-2) and third forming are protected
Bucket (53-3) inner wall is glued with rubber membrane (15) to shield, outer wall is respectively arranged with flange (51), and the flange (51) is equipped with spiral shell
Bar fixing groove (52) is provided with screw rod mounting hole (54) on second reaction plate (37-2), and third high-strength bolt (2-3) is successively
By the screw rod mounting hole (54) on the second reaction plate (37-2), the screw rod fixing groove (52) on flange (51) realizes described first
Forming protection bucket (53-1), the fixation of the second forming protection bucket (53-2) and third forming protection bucket (53-3)；Each screw rod
Fixing groove (52) is fixed by the first nut (55-2) with high-strength bolt (2-3), and the formation system (600) further includes pair
The earth material of design carries out hitting the rubber case of tying tight (34) real and then that the soil body (16) is made for hitting real equipment and rubber membrane (15) side.
2. the large scale soil mass water-Re according to claim 1-coupling pilot system of power-salt four, feature exist
In, between the first steel lid (41-1) and the first reaction plate (37-1), the second reaction plate (37-2) and the second steel lid
The second sealing rubber ring (36-3) and studdle (3) are arranged between (41-2), and the studdle (3) is with spiral shell
The high-strength steel screw rod of line；
Second reaction plate (37-2) and the first high-strength bolt (2-1) and the 3rd counter-force plate (37-3) and first are high-strength
Screw rod (2-1) is fixed by the second nut (55-1)；
Between first reaction plate (37-1) and the first steel bucket (38-1), first reaction plate (37-1) and the second steel
Between bucket (38-2), between second reaction plate (37-2) and the first steel bucket (38-1), second reaction plate (37-2)
It is arranged with third sealing rubber ring (36-1) between the second steel bucket (38-2)；
Between first sealing nut and the second reaction plate (37-2), the second sealing nut and the first reaction plate (37-1) it
Between, between third sealing nut and the first steel lid (41-1), it is uniformly distributed between the 4th sealing nut and the second steel lid (41-2)
It is equipped with the 4th sealing rubber ring (36-2).
3. the large scale soil mass water-Re according to claim 1-coupling pilot system of power-salt four, feature exist
In, be both provided on the second steel lid (41-2), the second reaction plate (37-2) and lower temperature-constant plate (18) with sealing screw rod
(24) identical threaded perforations, the sealing screw rod (24) is hollow screw, for data line, bottom coohng liquid circulation pipe
(26-1), oral siphon (25) and outlet pipe (27) pass through；
The tongs of control Markov bottle (30) flow, first permeable stone (22-1) and institute are disposed on the oral siphon (25)
It states and is covered with fine sand layer (23) on the second permeable stone (22-2).
4. large scale soil body frozen-thaw process water-Re-coupling pilot system of power-salt four according to claim 1,
It is characterized in that, the soil body (16) is the cylinder soil body of diameter 50cm, high 100cm；First reaction plate (37-1), second is anti-
Power plate (37-2) and 3rd counter-force plate (37-3) are cylindrical steel plate；
It is described first forming protection bucket (53-1), second forming protection bucket (53-2) and third forming protect bucket (53-3) be all by
Two semi-moon shaped steel bucket split compositions so that the soil body (16) the first forming protection bucket (53-1) afterwards is made, the second forming is protected
Shield bucket (53-2) and third forming protection bucket (53-3) are easy to remove；The first forming protection bucket (53-1), the second forming are protected
Shield bucket (53-2) and third forming protection bucket (53-3) side wall are both provided with aspirating hole (49).
5. the large scale soil mass water-Re according to claim 1-coupling pilot system of power-salt four, feature exist
In the upper temperature-constant plate (17) and lower temperature-constant plate (18) are all made of cylindrical steel plate, the top coolant liquid circulation pipe (26-
2) part for entering balancing gate pit (8) passes through the force-transmitting pole (43) internal；The upper temperature-constant plate (17) and lower temperature-constant plate (18)
Side is both provided with groove, and by the rubber case of tying tight (34), the groove on upper temperature-constant plate (17) and lower temperature-constant plate (18) will
Rubber membrane (15), upper temperature-constant plate (17) and lower temperature-constant plate (18) fit closely, and prevent the partial exfoliation of the soil body (16) during experiment
With the gas intrusion soil body (16) in balancing gate pit (8).
6. the large scale soil mass water-Re according to claim 1-coupling pilot system of power-salt four, feature exist
In, the gas pressure sensor (7), laser range sensor (9), soil pressure cell (10), pore water pressure sensor (12),
Water salt sensor (13) is 4, the laser range sensor (9), soil pressure cell (10), pore water pressure sensor
(12), water salt sensor (13) is arranged on same vertical line, and 20cm, 4 gas pressures sensing are divided between vertical
Device (7) is arranged in the first vacuum chamber (4), the second vacuum chamber (5), and third vacuum chamber (6) and balancing gate pit (8) are interior；Described
One vacuum chamber (4) include the top surface the first reaction plate (37-1), be placed in the first reaction plate center (37-1) and with the first reaction plate
First sealing piston set (40-1) of the identical contact of (37-1) and force transmission shaft (43), is placed in the top surface top the first reaction plate (37-1)
The first steel lid (41-1), be placed in the first steel lid center (41-1) and with steel lid (41-1) and pass vertical shaft (43) coincide
Second sealing piston set (40-2) of contact, is placed between the first sealing piston (40-1) and the second sealing piston set (40-2)
The top of first sealing rubber ring (36-4), the second high-strength bolt (2-2) passes through the first steel lid (41-1), close by third
Envelope nut is fixed on the first steel lid (41-1)；
Second vacuum chamber (5) includes the bottom surface the second reaction plate (37-2), is placed in the bottom surface lower part the second reaction plate (37-2)
Second steel lid (41-2) is placed in the sealing screw rod (24) of the second reaction plate (37-2) and second center steel lid (41-2), institute
It states sealing screw rod (24) and the second reaction plate (37-2) and the second steel lid (41-2) is identical contacts, the air tight leak in contact position；
The bottom end of second high-strength bolt (2-2) passes through the second steel lid (41-2), and the second steel is fixed on by the 4th sealing nut
It covers on (41-2)；
The first steel bucket (38-1) is set in the second steel bucket (38-2), the first steel bucket (38-1) outer wall and institute
The section for stating the formation of second steel bucket (38-2) inner wall is the third vacuum chamber (6).
7. the large scale soil mass water-Re according to claim 1 or 6-coupling pilot system of power-salt four, feature
It is, the gas pressure sensor (7), laser range sensor (9), soil pressure cell (10), pore water pressure sensor
(12), it is disposed with temperature sensor inside water salt sensor (13), plays the role of saving while temperature correction sensing data
Individually embedded temperature sensor is to step in the soil body (16).
8. the large scale soil mass water-Re according to claim 1-coupling pilot system of power-salt four, feature exist
In for carrying pure water or the water of prefabricated different salinity, the bottom of the load transducer (20) in the Markov bottle (30)
It is in contact with the top surface of the force transmission shaft (43) of balancing gate pit (8), biography is disposed between the force transmission shaft (43) and upper temperature-constant plate (17)
Power steel plate (39).
9. large scale soil mass water-Re-coupling pilot system of power-salt four according to claim 1 or 8, feature
It is, the xial feed loading equipemtn of the soil body (16) further includes being positioned to force transmission shaft (43) in the loading system (200)
Limiting device, be disposed with limit hole on the force transmission shaft (43), the limiting device includes Limit screw (56-2), combines spiral shell
Female (56-3) and precession screw rod (56-4), the Limit screw (56-2) are fixed on 3rd counter-force plate (37-3) by screw thread vertically
Bottom, the combination nut (56-3) is sleeved on Limit screw (56-2), and the rotation for passing through screw thread controls the liter of its position
Drop, combination nut (56-3) bottom are the nut of channel level, and the nut of the channel level can be in the horizontal direction
Rotate freely, precession screw rod (56-4) can the free precession on the nut of the channel level of the bottom combination nut (56-3), directly
It is contacted to coincideing with limit hole prefabricated on force transmission shaft (43).
10. a kind of soil mass water-based on large scale soil mass water-Re in claim 1-four coupling pilot systems of power-salt
The test method of Re-four couplings of power-salt, which is characterized in that include the following steps：
Step 1, turn-on data acquisition and control system start to acquire the temperature of inside soil body, water salt, stress, pore water pressure
Information acquires the lateral and vertical deformation information of the soil body, acquires the first vacuum chamber, the second vacuum chamber, the indoor gas of third vacuum
Body pressure information, the acquisition hydraulic pressure jack pair soil body add unloading information；
Step 2 keeps oral siphon, outlet pipe and glass tube it is unimpeded, open loading system, SERVO CONTROL be arranged by work station
The running parameter of platform, make hydraulic jack work until force transmission shaft be in contact with power transmission steel plate, adjust the gas supply of air compression station
Pressure makes the indoor gas pressure of pressure reach design value, and the running parameter of SERVO CONTROL platform is arranged again by work station, makes
Hydraulic jack carries out dead load consolidation to the soil body, until the consolidation of the soil body reaches stable；
After the completion of step 3, the consolidation of the soil body, by the limiting device fixing force transfer axis positioned to force transmission shaft, its position is limited
It moves, and then realizes the rigid constraint to body frost heaving；
Step 4 opens vacuum pumping pump, is by the first vacuum chamber, the second vacuum chamber and third vacuum chamber pumping by vacuum action
Vacuum state, vacuum state is using the data of gas pressure sensor as basis for estimation；
Step 5 opens bottom constant temperature slot, according to designing recharge of ground water temperature to be simulated, setting bottom low temperature thermostat bath and
The operating temperature of insulating box opens the outer loop pump of bottom constant temperature slot, passes through bottom after bottom constant temperature slot reaches operating temperature
Portion's coolant liquid circulation pipe and insulating box are heated or are cooled down to the brackish water in Markov bottle, until control panel displays temperature is visited
The temperature of needle reaches design value and stabilization；
Step 6, the tongs opened on oral siphon supply water, and the brackish water in Markov bottle is made to enter fine sand layer, gas by
The graduated glass pipe discharge being connected to fine sand layer；After observing that gas empties, Markov bottle position is adjusted, glass in Markov bottle is made
For glass bottom of the tube with fine sand layer top on a horizontal plane, analog constant level of ground water feeds the soil body；
Step 7 starts top thermostat, and when operating temperature reaches design value, the outer loop of open top part thermostat pumps, and makes
By top coolant liquid circulation pipe, upper temperature-constant plate is recycled, is freezed to the soil body, waited for cryogenic media in the thermostat of top
Terminate to freeze after the temperature of inside soil body, water salt, stress, pore water pressure and the lateral stabilization of the soil body；
Step 8, the operating temperature for adjusting top thermostat, the temperature setting top melted to the soil body according to design requirement are permanent
The operating temperature of warm slot, when operating temperature reaches design value, the outer loop of open top part thermostat pumps, and makes top thermostat
Interior cryogenic media is recycled, is melted to the soil body by top coolant liquid circulation pipe, upper temperature-constant plate, waits for inside soil body
Terminate to melt experiment after temperature, water salt, stress, pore water pressure and the lateral stabilization of the soil body；
Step 9, the freezing and thawing test for such as carrying out the soil body, repeat the 7th step and the 8th step；
Step 10, acquisition and control system obtain and store the temperature in the soil body, water salt, stress, pore water pressure in real time
And the soil body carries out analysis imaging by the data processing software of work station laterally with vertical deformation information to the data of acquisition
Reason obtains the Dynamic Coupling effect of water-Re-power-salt in the frozen-thaw process of the large scale soil body.
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| CN112326921A (en) * | 2020-09-08 | 2021-02-05 | 中国科学院西北生态环境资源研究院 | Multifunctional frost heaving test system and test method thereof |
| CN111948031A (en) * | 2020-09-24 | 2020-11-17 | 吉林大学 | Soil body direct shear test device considering water heating power salt coupling effect |
| CN113238026A (en) * | 2021-04-29 | 2021-08-10 | 中山大学 | Tester for freezing and melting soil body |
| CN112945708B (en) * | 2021-05-14 | 2021-08-03 | 中国科学院、水利部成都山地灾害与环境研究所 | Gravel frozen soil strength test system |
| CN112945708A (en) * | 2021-05-14 | 2021-06-11 | 中国科学院、水利部成都山地灾害与环境研究所 | Gravel frozen soil strength test system |
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