CN117949640B - Indoor simulation test device for frozen soil degradation process - Google Patents
Indoor simulation test device for frozen soil degradation process Download PDFInfo
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- CN117949640B CN117949640B CN202410353823.6A CN202410353823A CN117949640B CN 117949640 B CN117949640 B CN 117949640B CN 202410353823 A CN202410353823 A CN 202410353823A CN 117949640 B CN117949640 B CN 117949640B
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- 239000002689 soil Substances 0.000 title claims abstract description 125
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 33
- 238000004088 simulation Methods 0.000 title claims abstract description 25
- 238000012360 testing method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000008859 change Effects 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000003673 groundwater Substances 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000000523 sample Substances 0.000 claims description 8
- 239000013049 sediment Substances 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005325 percolation Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims 3
- 238000009529 body temperature measurement Methods 0.000 claims 2
- 230000015556 catabolic process Effects 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 10
- 230000001932 seasonal effect Effects 0.000 abstract description 7
- 238000010257 thawing Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000010485 coping Effects 0.000 abstract description 3
- 230000004044 response Effects 0.000 abstract description 3
- 238000010792 warming Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
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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
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Abstract
The invention relates to the technical field of frozen soil degradation tests, and discloses an indoor simulation test device for a frozen soil degradation process, which comprises an outer tank filled with underground water and an inner tank with two sides lapped in the outer tank, wherein two partition plates are detachably arranged in the inner tank through screws, and divide the inner tank into three soil filling spaces; further comprises: the device provided by the invention can simulate the freeze-thawing state of soil and groundwater in permafrost and seasonal permafrost development areas, and simulate and quantify the influence of climate warming on the hydro-thermal state of permafrost by setting different climate scenes, so as to study the process and mechanism of permafrost degradation; meanwhile, the simulation system is helpful for deep understanding of the response of the frozen soil area to the climate change, can provide important data support for predicting and evaluating the future frozen soil degradation trend, and provides scientific basis for formulating effective environmental protection and climate change coping strategies.
Description
Technical Field
The invention relates to the technical field of frozen soil degradation tests, in particular to an indoor simulation test device for a frozen soil degradation process.
Background
In the context of climate change, significant degradation of permafrost has profound effects on climate systems, ecological hydrologic processes, and even global water-carbon cycling. Permafrost refers to soil or rock that remains below freezing throughout the year, whereas seasonal frozen earth typically develops above permafrost, i.e., soil that freezes in winter and melts in summer. Permafrost is widely distributed in arctic and alpine regions, and as global air temperature increases, the permafrost region is undergoing a process of accelerating degradation. This is mainly due to the rise of global air temperature, which leads to the rise of the temperature of the frozen soil layer, the increase of the seasonal frozen soil thickness and the melting of part of the permafrost. In the process, the frozen soil water directly supplies underground water, and indirectly influences the ground surface-underground water connectivity, so that the regional hydrologic process is changed, and the river runoff and the water quality are influenced; meanwhile, the degradation of frozen soil can also cause the damage of soil structure and the reduction of stability, and the safety and the controllability of infrastructure construction are affected; moreover, permafrost degradation may also release a significant amount of previously frozen greenhouse gases, such as methane and carbon dioxide, which in turn accelerates global climate change. However, due to the wide area of permafrost development areas and the relatively harsh climatic environment, it is difficult to directly detect the permafrost. In addition, the conditions such as soil and underground ice content in permafrost areas have strong space-time heterogeneity, and the permafrost degradation process involves complex geographic and environmental factors, so that the permafrost degradation mechanism is difficult to study and simulate. Therefore, we propose an indoor simulation test device for the degradation process of frozen soil.
Disclosure of Invention
The invention aims to provide an indoor simulation test device for a frozen soil degradation process, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: an indoor simulation test device for frozen soil degradation process comprises an outer tank with underground water inside and an inner tank with two sides lapped in the outer tank, wherein two partition boards are detachably arranged in the inner tank through screws, and divide the inner tank into three soil filling spaces; further comprises: the soil sieves are arranged at the top of each soil filling space, the sizes of sieve holes of the three groups of soil sieves are different, the bottom of the inner tank is detachably provided with a percolation film for automatically penetrating external groundwater into the inner tank through screws, and two temperature control top bins which are symmetrically distributed are arranged above the top of the inner tank and are used for carrying out temperature regulation and control on the space of the inner tank to simulate air temperature change; and the conversion mechanisms are arranged on two sides of the temperature control top bin and are used for meeting the requirement of convenient conversion between the soil sieve and the temperature control top bin.
Preferably, the switching mechanism comprises a driving swing rod which is rotationally connected with the front side and the rear side of the temperature control top bin, the bottom of the driving swing rod is rotationally connected with the outer wall of the inner groove through a pin shaft, a sector gear is coaxially fixed on one side of the bottom of the driving swing rod, two driven swing rods are further arranged on one side of the driving swing rod in parallel, the top of each driven swing rod is rotationally connected with the temperature control top bin, the bottom of each driven swing rod is rotationally connected with the outer wall of the inner groove through a pin shaft, two groups of sector gears are symmetrically provided with two groups of driving pieces, the temperature control top bin can be conveniently opened by using the switching mechanism, so that a soil screen is rapidly exposed in the field of view of a user, and when people fill soil, the temperature control equipment is required to be disassembled, and convenient switching between the soil screen and the temperature control top bin is met.
Preferably, the driving piece is including being the riser that vertical state distributes, the both sides of riser all are fixed with the rack, two the rack respectively with the sector gear meshing is connected, the top of riser is fixed with first T type pole, the bar groove has been seted up on the riser, sliding connection has spacing post in the bar groove, the one end of spacing post with the outer wall fixed connection of inside groove utilizes driving piece convenient to use person uses the external force of upward direction to open the control by temperature change top storehouse.
Preferably, the bottom of riser is fixed with the balancing weight, the quality of balancing weight is greater than the riser with the sum of the quality of rack, just the balancing weight be in when control by temperature change top storehouse is in the closed state with the interior bottom in external tank contacts, is convenient for the automatic homing of two control by temperature change top storehouse through the balancing weight.
Preferably, the inner wall of soil sieve is fixed with the horizontal migration track, sliding connection has the removal brush-holder stud on the horizontal migration track, the bottom of removal brush-holder stud with the screen cloth upside of soil sieve is laminated mutually, the top of removal brush-holder stud is fixed with the second T type pole, moves at soil sieve inside by user operation removal brush-holder stud to can pave the soil and make things convenient for soil to fall into the dress soil space fast.
Preferably, both sides of the soil screen are movably hung at the top of the inner groove, and the bottom of the soil screen is provided with a vibrating motor, so that the soil screen has a certain vibrating function, and the soil can be further conveniently dropped.
Preferably, the left and right sides of the outer tank are respectively fixedly provided with a water inlet pipe and a water outlet pipe, the water inlet pipe is far away from one end fixedly connected with first connecting pipe of the outer tank, the first connecting pipe is far away from one end fixedly provided with a booster pump of the water inlet pipe, the water inlet end fixedly connected with second connecting pipe of the booster pump, and the groundwater inside the outer tank is enabled to have the function of recycling through the design so as to clean the inner tank.
Preferably, the one end fixedly connected with silt filter of booster pump is kept away from to the second connecting pipe, silt filter's the other end with the outlet pipe is linked together, and the silt filter of design is convenient for filter remaining silt in the groundwater, prevents that silt in the circulating water in-process from silting up, extension experimental facilities life, guarantees that the purity degree of the inside water of outer groove is enough to get into the inside groove through the filtration membrane.
Preferably, the front sides of the inner groove and the outer groove are made of transparent materials, so that observation and recording of workers are facilitated.
Preferably, the rear side of the inner groove and the rear side wall of each soil filling space are uniformly distributed with temperature measuring probes, the temperature measuring probes are distributed in a rectangular array, and the temperature and the soil temperature at different positions can be measured through the design, so that a comparison test is convenient.
Compared with the prior art, the invention has the beneficial effects that:
The device provided by the invention can simulate the freeze thawing state of soil and groundwater in permafrost and seasonal frozen soil development areas, and simulate and quantify the influence of climate warming on the hydro-thermal state of permafrost by setting different climate situations, so as to study the process and mechanism of frozen soil degradation; meanwhile, the simulation system is helpful for deep understanding of the response of the frozen soil area to the climate change, can provide important data support for predicting and evaluating the future frozen soil degradation trend, and provides scientific basis for formulating effective environmental protection and climate change coping strategies.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the present invention;
FIG. 3 is a schematic diagram of a conversion mechanism according to the present invention;
FIG. 4 is a schematic view of a driving member according to the present invention;
FIG. 5 is a schematic view of a soil screen construction of the present invention;
FIG. 6 is a schematic view of the structure of FIG. 5 from another perspective;
FIG. 7 is a schematic view showing the internal structure of the inner tank according to the present invention;
Fig. 8 is a schematic view of the external structure of the outer tank of the present invention.
In the figure: 1. an outer groove; 2. an inner tank; 3. a partition plate; 4. a soil loading space; 5. a soil screen; 6. a filtration membrane; 7. a temperature control top bin; 8. a conversion mechanism; 9. a driving swing rod; 10. sector gears; 11. driven swing rod; 12. a driving member; 13. a riser; 14. a rack; 15. a first T-bar; 16. a bar-shaped groove; 17. a limit column; 18. balancing weight; 19. a horizontal movement rail; 20. moving the brush bar; 21. a second T-bar; 22. a vibration motor; 23. a water inlet pipe; 24. a water outlet pipe; 25. a first connection pipe; 26. a booster water pump; 27. a second connection pipe; 28. a sediment filter; 29. a temperature measuring probe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-3, an indoor simulation test device for frozen soil degradation process in the drawings comprises an outer tank 1 filled with groundwater and an inner tank 2 with two sides lapped in the outer tank 1, wherein two partition plates 3 are detachably arranged in the inner tank 2 through screws, and the two partition plates 3 divide the inner tank 2 into three soil filling spaces 4; further comprises: the soil sieves 5 are arranged at the top of each soil filling space 4, the sieve pore sizes of the three groups of soil sieves 5 are different, the bottom of the inner tank 2 is detachably provided with a percolation film 6 for automatically penetrating external groundwater into the inner tank 2 through screws, and two temperature control top bins 7 which are symmetrically distributed are arranged above the top of the inner tank 2 and are used for regulating and controlling the temperature of the space of the inner tank 2 and simulating the temperature change of air; and the conversion mechanisms 8 are arranged on two sides of the temperature control top bin 7 and are used for meeting the requirement of convenient conversion between the soil screen 5 and the temperature control top bin 7.
In this scheme, the inside groove 2 structure of three different positions of design packs into the soil of different sandy soil, loam and three kinds of textures of clay respectively in the dress soil space 4 of inside groove 2 to filter by soil sieve 5, form three contrast group in three dress soil space 4 at last, the groundwater in outside groove 1 inside can evenly enter into soil through infiltration membrane 6, and simulate different groundwater level conditions through the adjustment infiltration volume, and carry out temperature regulation and control through control by temperature control top storehouse 7 in infiltration enough long time, thereby simulate the frozen soil degradation simulation test under the different temperatures.
Further, referring to fig. 5, a horizontal moving rail 19 is fixed on the inner wall of the soil screen 5, a moving brush rod 20 is slidably connected on the horizontal moving rail 19, the bottom of the moving brush rod 20 is attached to the upper side of the screen of the soil screen 5, a second T-shaped rod 21 is fixed on the top of the moving brush rod 20, and the moving brush rod 20 is operated by a user to move inside the soil screen 5, so that soil can be paved to be convenient for the soil to fall into the soil loading space 4 rapidly.
Optimize soil sieve 5, when soil screens, the sieve mesh of soil can plug up, and the staff can utilize second T type pole 21 to remove brush-holder stud 20 this moment, and remove brush-holder stud 20 can brush soil sieve 5 surface for in the soil enters into the dress soil space 4 through the sieve mesh.
Further, referring to fig. 6, two sides of the soil screen 5 are movably hung at the top of the inner tank 2, and the vibrating motor 22 is installed at the bottom of the soil screen 5, so that the soil screen 5 has a certain vibrating function, and the soil can be further conveniently dropped.
Further, referring to fig. 1, the front sides of the inner tank 2 and the outer tank 1 are made of transparent materials, and the structure made of the transparent materials can observe the change of the groundwater level, the infiltration amount of soil, permafrost and seasonal frozen soil thawing changes, so that the analysis, observation and recording of staff are facilitated.
Further, referring to fig. 7, temperature measuring probes 29 are uniformly distributed on the rear side wall of each soil-loading space 4 at the rear side of the inner tank 2, and the temperature measuring probes 29 are distributed in a rectangular array, and a screen type temperature measuring system is adopted to measure the temperature of the soil and the soil temperatures at different positions, so that a comparison experiment is convenient.
Specifically, a temperature control top bin 7 is internally provided with a temperature control system by personnel, and the temperature control system can simulate four seasons of temperature change and annual temperature change so as to simulate the air temperature condition above soil, so that the soil temperature is changed under different air temperature conditions, different freeze thawing changes of seasonal frozen soil and perennial frozen soil are ensured, and the effect of a simulation test is better realized;
Besides, a conductivity meter can be arranged outside, a probe of the conductivity meter is extended into the soil permeated with the underground water, the conductivity of the soil at a certain temperature can be measured, the water content of the soil is calculated according to the relationship between the conductivity and the temperature, the simulation data of the water content of the soil are provided, the data of the water-bearing layer of the soil can be supplemented, and the simulation of different permafrost types and changing situations is facilitated.
In sum, the scheme can simulate the freeze thawing state of soil and groundwater in permafrost and seasonal frozen soil development areas, and simulate and quantify the influence of climate warming on the hydro-thermal state of permafrost by setting different climate situations, so as to study the process and mechanism of frozen soil degradation; meanwhile, the simulation system is helpful for deep understanding of the response of the frozen soil area to the climate change, can provide important data support for predicting and evaluating the future frozen soil degradation trend, and provides scientific basis for formulating effective environmental protection and climate change coping strategies.
Example two
Referring to fig. 3 and 4, this embodiment is further described with respect to example one, which is distinguished by the fact that the temperature-controlled top bin 7 and the soil screen 5 are optimized.
Specifically, the conversion mechanism 8 comprises a driving swing rod 9 rotatably connected to the front side and the rear side of the temperature control top bin 7, the bottom of the driving swing rod 9 is rotatably connected with the outer wall of the inner tank 2 through a pin shaft, a sector gear 10 is coaxially fixed on one side of the bottom of the driving swing rod 9, two driven swing rods 11 are arranged on one side of the driving swing rod 9 in parallel, the top of each driven swing rod 11 is rotatably connected with the temperature control top bin 7, the bottom of each driven swing rod 11 is rotatably connected with the outer wall of the inner tank 2 through a pin shaft, two groups of sector gears 10 are symmetrically provided, a driving piece 12 is arranged between the two groups of sector gears 10, and the temperature control top bin 7 can be conveniently opened by utilizing the conversion mechanism 8, so that the soil sieve 5 can be rapidly exposed in the field of view of a user, and when people fill soil, the temperature control equipment is required to be disassembled, and convenient conversion between the soil sieve 5 and the temperature control top bin 7 is satisfied;
Meanwhile, the driving piece 12 comprises vertical plates 13 which are distributed in a vertical state, racks 14 are fixed on two sides of each vertical plate 13, the two racks 14 are respectively connected with the sector gear 10 in a meshed mode, a first T-shaped rod 15 is fixed on the top of each vertical plate 13, a bar groove 16 is formed in each vertical plate 13, a limit post 17 is connected in a sliding mode in each bar groove 16, one end of each limit post 17 is fixedly connected with the outer wall of the inner groove 2, and a temperature control top bin 7 is opened by using external force in the upward direction by the driving piece 12.
It should be noted that: in the process of adding soil into the inner tank 2, in order to avoid the need of dismantling temperature control equipment when personnel fill soil, the first T-shaped rod 15 can be manually controlled to move upwards, the first T-shaped rod 15 drives the rack 14 to move, the rack 14 drives two groups of sector gears 10 to rotate in opposite directions, the driving swing rod 9 connected with the sector gears 10 is driven to rotate, the top of the driving swing rod 9 can open half of the temperature control top bin 7, the driving swing rods 9 on two sides simultaneously rotate, and accordingly the temperature control top bin 7 is synchronously opened, the soil screen 5 is exposed in the visual field, and convenient conversion between the soil screen 5 and the temperature control top bin 7 is met.
Meanwhile, it is worth noting that a balancing weight 18 is fixed at the bottom of the vertical plate 13, the weight of the balancing weight 18 is larger than the sum of the weight of the vertical plate 13 and the weight of the rack 14, the balancing weight 18 contacts with the inner bottom of the outer groove 1 when the temperature control top bin 7 is in a closed state, when the vertical plate 13 returns to the original position, the external force on the first T-shaped rod 15 can be removed, the gravity of the balancing weight 18 is downward, the rack 14 is automatically driven downwards, the sector gear 10 is further reversed, and the temperature control top bin 7 is automatically closed.
Example III
Referring to fig. 1 and 8, this embodiment will be further described with respect to other examples, with the difference that the groundwater in the external tank 1 is optimized.
Specifically, the left and right sides of external tank 1 is fixed mounting respectively has inlet tube 23 and outlet pipe 24, the one end fixedly connected with first connecting pipe 25 of external tank 1 is kept away from to inlet tube 23, the one end fixedly mounted who keeps away from inlet tube 23 to first connecting pipe 25 has booster pump 26, booster pump 26's inlet end fixedly connected with second connecting pipe 27, booster pump 26's one end fixedly connected with silt filter 28 is kept away from to second connecting pipe 27, silt filter 28's the other end is linked together with outlet pipe 24, the silt filter 28 of design is convenient for filter residual silt in the groundwater, prevent silt of circulating water in-process and block up, extension experimental facilities life, guarantee that the purity degree of the inside water of external tank 1 is enough to get into inside tank 2 through infiltration membrane 6.
When the device is specifically used, a small amount of sediment can be remained in the underground water, the underground water is pumped out through the booster water pump 26, filtered by the sediment filter 28, and finally returned to the outer tank 1 through the water inlet pipe 23, so that the circulating flow of the underground water can be carried out, the filtering effect is improved, and the effect of flushing the inner tank 2 is also achieved.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An indoor simulation test device for frozen soil degradation process, comprising:
an outer tank (1) filled with underground water and an inner tank (2) with two sides lapped in the outer tank (1), wherein two partition boards (3) are detachably arranged in the inner tank (2) through screws, and the two partition boards (3) divide the inner tank (2) into three soil filling spaces (4);
The method is characterized in that: further comprises:
The soil sieves (5) are arranged at the top of each soil filling space (4), the mesh sizes of the three groups of soil sieves (5) are different, the bottom of the inner tank (2) is detachably provided with a percolation film (6) for automatically penetrating external groundwater into the inner tank (2) through screws, and two temperature control top bins (7) which are symmetrically distributed are arranged above the top of the inner tank (2) and are used for regulating and controlling the temperature of the space of the inner tank (2) and simulating air temperature change;
and the conversion mechanisms (8) are arranged on two sides of the temperature control top bin (7) and are used for meeting the requirement of convenient conversion between the soil screen (5) and the temperature control top bin (7).
2. An indoor simulation test device for frozen soil degradation process according to claim 1, wherein: the switching mechanism (8) comprises driving swing rods (9) which are rotationally connected to the front side and the rear side of the temperature control top bin (7), the bottoms of the driving swing rods (9) are rotationally connected with the outer wall of the inner groove (2) through pin shafts, sector gears (10) are coaxially fixed on one side of the bottoms of the driving swing rods (9), two driven swing rods (11) are further arranged on one side of the driving swing rods (9) in parallel, the tops of the driven swing rods (11) are rotationally connected with the temperature control top bin (7), the bottoms of the driven swing rods (11) are rotationally connected with the outer wall of the inner groove (2) through pin shafts, two groups of sector gears (10) are symmetrically arranged, and driving pieces (12) are arranged between the two groups of sector gears (10).
3. An indoor simulation test device for frozen soil degradation process according to claim 2, wherein: the driving piece (12) is including riser (13) that are vertical state and distribute, both sides of riser (13) all are fixed with rack (14), two rack (14) respectively with the meshing of sector gear (10) is connected, the top of riser (13) is fixed with first T type pole (15), bar groove (16) have been seted up on riser (13), sliding connection has spacing post (17) in bar groove (16), the one end of spacing post (17) with the outer wall fixed connection of inside groove (2).
4. A frozen soil degradation process indoor simulation test device according to claim 3, wherein: the bottom of riser (13) is fixed with balancing weight (18), balancing weight (18) quality is greater than riser (13) with the sum of the quality of rack (14), just balancing weight (18) when control by temperature change top storehouse (7) are in the state of closing with the interior bottom of external groove (1).
5. An indoor simulation test device for frozen soil degradation process according to claim 1, wherein: the soil screening device is characterized in that a horizontal moving track (19) is fixed on the inner wall of the soil screening device (5), a moving brush rod (20) is connected to the horizontal moving track (19) in a sliding mode, the bottom of the moving brush rod (20) is attached to the upper side of a screen of the soil screening device (5), and a second T-shaped rod (21) is fixed to the top of the moving brush rod (20).
6. An indoor simulation test device for frozen soil degradation process according to claim 5, wherein: the two sides of the soil screen (5) are movably hung at the top of the inner groove (2), and a vibrating motor (22) is installed at the bottom of the soil screen (5).
7. An indoor simulation test device for frozen soil degradation process according to claim 1, wherein: the left side and the right side of the outer groove (1) are respectively fixedly provided with a water inlet pipe (23) and a water outlet pipe (24), one end of the water inlet pipe (23) away from the outer groove (1) is fixedly connected with a first connecting pipe (25), one end of the first connecting pipe (25) away from the water inlet pipe (23) is fixedly provided with a booster pump (26), and the water inlet end of the booster pump (26) is fixedly connected with a second connecting pipe (27).
8. An indoor simulation test device for frozen soil degradation process according to claim 7, wherein: one end of the second connecting pipe (27) which is far away from the booster water pump (26) is fixedly connected with a sediment filter (28), and the other end of the sediment filter (28) is communicated with the water outlet pipe (24).
9. An indoor simulation test device for frozen soil degradation process according to claim 1, wherein: the front sides of the inner groove (2) and the outer groove (1) are made of transparent materials.
10. An indoor simulation test device for frozen soil degradation process according to claim 1, wherein: temperature measurement probes (29) are uniformly distributed on the rear side wall of each soil filling space (4) at the rear side of the inner groove (2), and the temperature measurement probes (29) are distributed in a rectangular array.
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| CN202410353823.6A CN117949640B (en) | 2024-03-27 | 2024-03-27 | Indoor simulation test device for frozen soil degradation process |
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| CN202410353823.6A CN117949640B (en) | 2024-03-27 | 2024-03-27 | Indoor simulation test device for frozen soil degradation process |
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| CN117949640B true CN117949640B (en) | 2024-05-24 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN116626264A (en) * | 2023-03-13 | 2023-08-22 | 兰州大学 | Improved soil frost heaving characteristic test device and test method |
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