CN204882378U - Water translocation process tracer in frozen soil - Google Patents
Water translocation process tracer in frozen soil Download PDFInfo
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- CN204882378U CN204882378U CN201520377104.4U CN201520377104U CN204882378U CN 204882378 U CN204882378 U CN 204882378U CN 201520377104 U CN201520377104 U CN 201520377104U CN 204882378 U CN204882378 U CN 204882378U
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Abstract
The utility model discloses a water translocation process tracer in frozen soil, it includes the soil sample groove, goes up cryostat board and lower cryostat groove, and the soil sample groove comprises organic glass wide plate, organic glass strap and lower cryostat board, and the supply of the external ma shi moisturizing bottle of lower cryostat board joinable simulation groundwater upward is equipped with the import and the export of refrigerating fluid on the cryostat board, and lower cryostat groove is become by organic glass card slot, the snakelike copper nest of tubes. At first packing the mixture of fluorescent agent, water and soil in the soil sample inslot during experiment, then placing down the soil sample groove in the cryostat inslot, go up the top that the soil body was placed in to the cryostat board, ma shi moisturizing bottle is connected to lower cryostat board, adopts the last cryostat board of connecting outside heat sink to carry out one -way cooling with lower cryostat groove for the soil body, opens purple light lamp and digital camera in the process of the test, and the pursuit soil body freezes the water translocation process of in -process. The utility model has the advantages of being simple in structure and convenient in operation, can audio -visual water translocation process of observing in the frozen soil.
Description
Technical field
The utility model relates to water translocation process trace device in a kind of frozen soil, belongs to indoor geotechnological low-temperature test technical field.
Background technology
Frozen soil, as a kind of Subgrade soil in engineering, is distributed widely in the areas such as China northeast, North China, northwest.Along with the fast development of China's economy, the engineering construction such as railway, road, water conservancy, pipeline of Frozen Ground Area vigorously advances, and permafrost region soil body moisture in freezing process crystallizes into ice causes soil particle displacement and the frost heave formed, and melting of being derived thus sunken, rise soil, the disease such as lifting by frost, be all a difficult problem for the engineering constructions such as puzzlement permafrost region railway, road, be also the focal issue of domestic and international frozen soil scholar research all the time.
Domestic and international researcher generally believes, the frost heave of the soil body is made up of original position frost heave and fractional condensation frost heave, and fractional condensation frost heave is the fundamental component of body frost heaving.Fractional condensation frost heave certain position by water translocation in frozen soil and in the soil body produces segregated ice and causes, and what the driving force of wherein water translocation came from thermograde induction does not freeze water potential gradient.As can be seen here, water translocation process, the forming process of ice crystal and the forming process of freezing front in research frozen soil, breed evolution, Disaster mechanism to announcement Frost heave of frozen soil, propose effective freezing prevention measure and have very important practical meaning in engineering.But the scarcity of experimental facilities, experimental technique, means is all that in frozen soil, Moisture Transfer Rule research is difficult to deep bottleneck all the time; Generally adopt the Moisture Transfer Rule studied in two ways in Freezing Soils both at home and abroad at present, one is the method adopting oven drying method test to freeze differing heights position, front and back water content of soil, the method only can obtain the water content distribution state before and after freezing soil, cannot analyze water translocation process; Two is the changes adopting native cylinder water content in moisture transducer test freezing process, though the method can be monitored water translocation process, but lack visual, the test of water cut simultaneously mostly also is volumetric(al) moisture content.
Therefore in the urgent need to a kind of can easily to the method that water translocation process in frozen soil is followed the trail of.
Utility model content
The technical problems to be solved in the utility model is to provide water translocation process trace device in simple, easy to operate, the visual strong frozen soil of a kind of structure.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: water translocation process trace device in a kind of frozen soil, and its gordian technique is: it comprises soil sample groove, upper cryostat plate and lower cryostat groove;
Described soil sample groove comprises parallel and symmetrically arranged two organic glass wide plates, parallel and symmetrically arranged organic glass narrow boards and lower cryostat plate, described organic glass wide plate is vertical with machine glass narrow boards to be arranged, described organic glass wide plate and machine glass narrow boards enclose the sample groove that xsect is rectangle, and the bottom of this sample groove is lower cryostat plate; Described organic glass wide plate and machine glass narrow boards are located by connecting through set bolt; Described organic glass wide plate is provided with several temperature gaging holes;
Be provided with moisturizing passage on described lower cryostat plate, described moisturizing passage forms with the subchannel be connected bottom soil sample with the main channel of exhausr port by connecting water supplement port, and described main channel is communicated with subchannel;
Described upper cryostat plate comprises a rectangular tube, and described rectangular tube is provided with refrigerating fulid import and refrigerating fulid outlet;
Described lower cryostat groove comprises poly (methyl methacrylate) plate groove and is arranged at the copper tube serpentine of poly (methyl methacrylate) plate trench bottom, and it is outside that the refrigerating fulid entrance point of described organic glass board slot and refrigerating fulid endpiece extend to machine glass board slot;
It is inner that described soil sample groove is located at lower cryostat groove, and the top of the soil body in sample groove is located at by described upper cryostat plate.
Preferably, described organic glass wide plate, organic glass narrow boards and lower cryostat plate are assemblied into one by fluid sealant and set bolt.
Preferably, the transmittance of described organic glass wide plate is at least 95%.
Preferably, described upper cryostat plate, lower cryostat plate are stainless steel.
Preferably, the inside clear height of described lower cryostat groove is identical with the clear height of lower cryostat plate.
Preferably, described water supplement port and exhausr port flush with lower cryostat plate top.
The experimental technique of above-mentioned experimental provision is: first by fluorescer, the compound of water and soil is filled in soil sample groove, temperature gaging hole on soil sample groove inserts temperature sensor, then soil sample groove is placed in lower cryostat groove, upper cryostat plate is placed in the top of the soil body in soil sample groove, connect water supplement port to geneva water bottle, after being full of water in moisturizing passage, close exhausr port, then the upper cryostat plate connecting outside heat sink and lower cryostat groove is adopted to be that the soil body carries out unidirectional cooling, ultraviolet light and digital camera is opened in process of the test, follow the trail of the water translocation process in Freezing Soils.
Further improvement, for the soil body carry out unidirectional cooling before need to carry out the process of 12h constant temperature, when temperature is consistent in the soil body, then starts to lower the temperature and open water supplement port.
In said method, in Freezing Soils, the temperature of upper cryostat plate is subzero temperature, and the temperature of lower cryostat groove is+1 ° of C, is top-down Unidirectional Freezing pattern.Be the potpourri of pure water and fluorescer in described geneva water bottle, the volume of described fluorescer is every premium on currency 5g.
The beneficial effect adopting technique scheme to produce is:
1, the utility model is provided with soil sample groove, upper cryostat plate and lower cryostat groove, its one-piece construction is simple, cost is low, easy to operate, visuality is strong, robotization is strong, result of use good, can the forming process of water translocation process, ice crystal and freezing front intuitively in observation and analysis frozen soil, the qualitatively analyze recharge of ground water is to frozen soil disease Emergence and Development mechanism.
2, owing to being provided with upper cryostat plate, lower cryostat plate and lower cryostat groove, unidirectional (from top to bottom) cooling can be carried out for the soil body in soil sample groove, the Unidirectional Freezing pattern of the simulated field soil body; Be soil sample moisturizing because lower cryostat plate can connect external geneva water bottle, the recharge of ground water effect in simulated field Freezing Soils; Because soil sample groove adopts the organic glass wide plate of high transmission rate, digital camera in process of the test, can be adopted to take in soil sample groove water translocation process in Freezing Soils; Owing to utilizing the characteristic of the display different colours before and after freezing of the fluorescer under ultraviolet light, the forming process of ice crystal in the soil body can be observed more intuitively, and in conjunction with temperature sensor, the formation of real-time monitored freezing front, moving process; Because the soil temperature change in experimentation, water replenishment, digital camera are taken pictures and be computing machine control, have the advantages that automaticity is high, workable, decrease artificial interference.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model soil sample groove;
Fig. 2 is that the A-A of Fig. 1 cuts open schematic diagram;
Fig. 3 is the schematic top plan view of this soil sample groove;
Fig. 4 is the structural representation of upper cryostat plate;
Fig. 5 is that the C-C of Fig. 4 cuts open schematic diagram;
Fig. 6 is the structural representation of lower cryostat groove;
Fig. 7 is the schematic top plan view of Fig. 6;
Wherein, 1, organic glass wide plate, 1-1, temperature gaging hole; 2, organic glass narrow boards; 3, lower cryostat plate, 3-1, moisturizing passage, 3-2, water supplement port, 3-3, exhausr port; 4, set bolt; 5, upper cryostat plate, 5-1, rectangular tube, 5-2, refrigerating fulid import, 5-3, refrigerating fulid export; 6, lower cryostat groove, 6-1, organic glass board slot, 6-2, copper tube serpentine, 6-3, refrigerating fulid entrance point, 6-4, refrigerating fulid endpiece; 7, sample groove.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
This device comprises soil sample groove, upper cryostat plate 5 and lower cryostat groove 6.It is inner that described soil sample groove is located at lower cryostat groove 6, and the top of the soil body in soil sample groove is located at by described upper cryostat plate 5.
As shown in accompanying drawing 1-accompanying drawing 3, described soil sample groove comprises two pieces of organic glass wide plates 1 and two pieces of organic glass narrow boards 2 and lower cryostat plate 3, two pieces of organic glass wide plates 1 are parallel and symmetrical, two pieces of organic glass narrow boards 2 are similarly parallel and are symmetrical arranged, described organic glass wide plate 1 is vertical with machine glass narrow boards 2 to be arranged, described organic glass wide plate 1 encloses with machine glass narrow boards 2 the sample groove 7 that xsect is rectangle, and the bottom of this sample groove 7 is provided with lower cryostat plate 3; Described organic glass wide plate 1, organic glass narrow boards 2 and lower cryostat plate 3 are assemblied into one by fluid sealant and set bolt 4.Described organic glass wide plate 2 is provided with several temperature gaging holes 1-1.Be provided with moisturizing passage 3-1 on described lower cryostat plate 3, described moisturizing passage 3-1 forms with the subchannel be connected bottom soil sample with the main channel of exhausr port 3-3 by connecting water supplement port 3-2, and described main channel is communicated with subchannel and vertically arranges.The transmittance of described organic glass wide plate 2 need reach 95%.
As shown in figures 4 and 5, described upper cryostat plate 5 comprises a stainless steel rectangular pipe 5-1, and described rectangular tube 5-1 is provided with refrigerating fulid import 5-2 and refrigerating fulid outlet 5-3.Described upper cryostat plate 5, lower cryostat plate 3 are corrosion resistant plate.
As shown in accompanying drawing 6 and accompanying drawing 7, described lower cryostat groove 6 comprises poly (methyl methacrylate) plate groove 6-1 and is arranged at the copper tube serpentine 6-2 bottom organic glass board slot 6-1, and it is outside that the refrigerating fulid entrance point 6-3 of described organic glass board slot 6-1 and refrigerating fulid endpiece 6-4 extends to organic glass board slot 6-1; Described organic glass board slot 6-1 is rectangular channel.The inside clear height of described lower cryostat groove 6 is identical with the clear height of lower cryostat plate 3.Described water supplement port 3-2 and exhausr port 3-3 flushes with lower cryostat plate 3 top.
Below by two embodiments, experimentation of the present utility model is described.
Embodiment 1
Under closed not supplying water condition, in frozen soil, water translocation process trace implementation process is:
Obtain the content of soil water according to water cut and dry ground quality, according to the proportioning of every premium on currency 5g, fluorescer is incorporated in soil, and fencing lawn diel.The compound that maintenance is good is filled in soil sample groove, temperature sensor is inserted after being filled to desired location, then soil sample groove is placed in lower cryostat groove 6, upper cryostat plate 5 is placed in soil body top, and the refrigerating fulid import 5-2 on the refrigerating fulid entrance point 6-3 on lower cryostat groove 6 and refrigerating fulid endpiece 6-4 and upper cryostat plate 5 and refrigerating fulid outlet 5-3 is connected to outside heat sink respectively.Close water supplement port 3-2 and the exhausr port 3-3 of lower cryostat plate 3, and anti freezing solution in lower cryostat groove 6, will be full of, open outside heat sink and be all set to same temperature (+1 ° of C), starting to carry out constant temperature to the soil body.When inside soil body temperature reaches consistent, adjustment connects the outside heat sink of upper cryostat plate 5 to a certain subzero temperature, the outside heat sink connecting lower cryostat groove 6 is temperature-resistant, and open ultraviolet light and digital camera, follow the trail of the water translocation process in Freezing Soils, Ice Formation Process and freezing front position.
Embodiment 2
Opening wide under supplying water condition water translocation process trace implementation process in frozen soil be:
According to water cut and dry ground quality preparation soil sample, and fencing lawn diel.The compound that maintenance is good is filled in soil sample groove, temperature sensor is inserted after being filled to desired location, then soil sample groove is placed in lower cryostat groove 6, upper cryostat plate 5 is placed in soil body top, and the refrigerating fulid import 5-2 on the refrigerating fulid entrance point 6-3 on lower cryostat groove 6 and refrigerating fulid endpiece 6-4 and upper cryostat plate 5 and refrigerating fulid outlet 5-3 is connected to outside heat sink respectively.Connect the water supplement port of lower cryostat plate 3 to external geneva water bottle, open water supplement port 3-1 and exhausr port 3-2, the moisturizing passage in lower cryostat plate 3 is made to be full of the mixed liquor of water and fluorescer, then close water supplement port 3-1 and exhausr port 3-2, the mixed liquor wherein in geneva water bottle is every premium on currency 5g fluorescer.And be full of anti freezing solution by lower cryostat groove 6, open outside heat sink and be all set to same temperature (+1 ° of C), starting to carry out constant temperature to the soil body.When inside soil body temperature reaches consistent, open the water supplement port 3-1 on lower cryostat plate 3, and adjustment connects the outside heat sink of upper cryostat plate 5 to a certain subzero temperature, the outside heat sink connecting lower cryostat groove 6 is temperature-resistant, and open ultraviolet light and digital camera, follow the trail of the water translocation process in Freezing Soils, Ice Formation Process and freezing front position.
Claims (6)
1. a water translocation process trace device in frozen soil, is characterized in that: it comprises soil sample groove, upper cryostat plate (5) and lower cryostat groove (6);
Described soil sample groove comprises parallel and symmetrically arranged two organic glass wide plates (1), parallel and symmetrically arranged organic glass narrow boards (2) and lower cryostat plate (3), described organic glass wide plate (1) is vertical with machine glass narrow boards (2) to be arranged, described organic glass wide plate (1) and machine glass narrow boards (2) enclose the sample groove (7) that xsect is rectangle, and the bottom of this sample groove (7) is lower cryostat plate (3); Described organic glass wide plate (1) and machine glass narrow boards (2) are located by connecting through set bolt (4); Described organic glass wide plate (2) is provided with several temperature gaging holes (1-1);
Be provided with moisturizing passage (3-1) in described lower cryostat plate (3) is upper, described moisturizing passage (3-1) is made up of with the subchannel be connected bottom soil sample with the main channel of exhausr port (3-3) connection water supplement port (3-2), and described main channel is communicated with subchannel;
Described upper cryostat plate (5) comprises a rectangular tube (5-1), and described rectangular tube (5-1) is provided with refrigerating fulid import (5-2) and refrigerating fulid outlet (5-3);
Described lower cryostat groove (6) comprises poly (methyl methacrylate) plate groove (6-1) and is arranged at the copper tube serpentine (6-2) of organic glass board slot (6-1) bottom, and it is outside that the refrigerating fulid entrance point (6-3) of described organic glass board slot (6-1) and refrigerating fulid endpiece (6-4) extend to machine glass board slot (6-1);
It is inner that described soil sample groove is located at lower cryostat groove (6), and described upper cryostat plate (5) is located at the top of the soil body in soil sample groove.
2. water translocation process trace device in frozen soil according to claim 1, is characterized in that: described organic glass wide plate (1), organic glass narrow boards (2) and lower cryostat plate (3) are assemblied into one by fluid sealant and set bolt (4).
3. water translocation process trace device in frozen soil according to claim 1, is characterized in that: the transmittance of described organic glass wide plate (2) is at least 95%.
4. water translocation process trace device in frozen soil according to claim 1, is characterized in that: described upper cryostat plate (5), lower cryostat plate (3) are stainless steel.
5. water translocation process trace device in frozen soil according to claim 1, is characterized in that: the inside clear height of described lower cryostat groove (6) is identical with the clear height of lower cryostat plate (3).
6. water translocation process trace device in frozen soil according to claim 5, is characterized in that: described water supplement port (3-2) and exhausr port (3-3) flush with lower cryostat plate (3) top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520377104.4U CN204882378U (en) | 2015-06-03 | 2015-06-03 | Water translocation process tracer in frozen soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520377104.4U CN204882378U (en) | 2015-06-03 | 2015-06-03 | Water translocation process tracer in frozen soil |
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| CN204882378U true CN204882378U (en) | 2015-12-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092578A (en) * | 2015-06-03 | 2015-11-25 | 石家庄铁道大学 | Device for tracking moisture migration process in frozen soil and experiment method thereof |
| CN108519477A (en) * | 2018-04-24 | 2018-09-11 | 西南科技大学 | A kind of frozen ground regions roadbed model pilot system |
| CN110031464A (en) * | 2019-04-18 | 2019-07-19 | 哈尔滨工程大学 | A kind of observation device of simulation flowing sea ice freezing process |
| CN110274852A (en) * | 2019-07-15 | 2019-09-24 | 长安大学 | A kind of groundwater dynamic experimental system for simulating and experimental method |
| CN114486995A (en) * | 2022-01-05 | 2022-05-13 | 湖北工业大学 | Simulation detection device for frost heaving condition of culvert |
-
2015
- 2015-06-03 CN CN201520377104.4U patent/CN204882378U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092578A (en) * | 2015-06-03 | 2015-11-25 | 石家庄铁道大学 | Device for tracking moisture migration process in frozen soil and experiment method thereof |
| CN108519477A (en) * | 2018-04-24 | 2018-09-11 | 西南科技大学 | A kind of frozen ground regions roadbed model pilot system |
| CN108519477B (en) * | 2018-04-24 | 2023-10-13 | 西南科技大学 | Seasonal frozen soil area roadbed model test system |
| CN110031464A (en) * | 2019-04-18 | 2019-07-19 | 哈尔滨工程大学 | A kind of observation device of simulation flowing sea ice freezing process |
| CN110274852A (en) * | 2019-07-15 | 2019-09-24 | 长安大学 | A kind of groundwater dynamic experimental system for simulating and experimental method |
| CN110274852B (en) * | 2019-07-15 | 2021-08-17 | 长安大学 | Underground water dynamic simulation experiment system and method |
| CN114486995A (en) * | 2022-01-05 | 2022-05-13 | 湖北工业大学 | Simulation detection device for frost heaving condition of culvert |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190603 |
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| CF01 | Termination of patent right due to non-payment of annual fee |