CN114778411A - Indoor soil body permeation test device - Google Patents
Indoor soil body permeation test device Download PDFInfo
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- CN114778411A CN114778411A CN202210483582.8A CN202210483582A CN114778411A CN 114778411 A CN114778411 A CN 114778411A CN 202210483582 A CN202210483582 A CN 202210483582A CN 114778411 A CN114778411 A CN 114778411A
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- 239000002689 soil Substances 0.000 title claims abstract description 69
- 238000012360 testing method Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 182
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 15
- 230000008595 infiltration Effects 0.000 claims description 8
- 238000001764 infiltration Methods 0.000 claims description 8
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000001931 thermography Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 9
- 238000011160 research Methods 0.000 abstract description 5
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract description 3
- 230000008859 change Effects 0.000 description 10
- 238000009435 building construction Methods 0.000 description 6
- 238000004088 simulation Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000006467 substitution reaction 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
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Dispersion Chemistry (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention belongs to the technical field of engineering construction, and relates to an indoor soil body penetration test device, which comprises: a container for holding a soil sample; a water supply assembly in communication with the container; the detection assembly is arranged on the water supply assembly and used for detecting the water flow pressure and the water flow speed; the water permeable plate is arranged on the lower surface of the container, and one end of the water permeable plate penetrates through the side wall of the container and then extends to the outside of the container; the water tank is arranged on the lower side of the extending end of the water permeable plate; and the loading assembly is arranged at the upper part of the container and is used for applying pressure to the soil sample in the container. According to the invention, through the arrangement of the container, the flowmeter, the plurality of water pressure sensors and the temperature control assembly, physical parameters, namely the pressure and the flow speed of water flow, of the frozen soil sample which is changed from a frozen state to a melted state and then from the melted state to the frozen state can be rapidly measured, so that the research on repeated freezing and melting of frozen soil is carried out, and the construction design and the construction efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of engineering construction, and relates to an indoor soil body permeation test device.
Background
The freeze-thaw action refers to the process that water in a frozen soil layer continuously undergoes phase change and migration under the influence of periodic positive and negative changes of air temperature, so that the soil layer is repeatedly frozen and thawed, and soil body or rock body damage, disturbance and movement are caused. Meanwhile, the frozen soil is extremely sensitive to temperature, and the accumulation of moisture and salt is accompanied in the freeze thawing process, so that the seasonal frozen soil is caused to generate frost heaving and thaw collapse phenomena, foundation engineering and road and bridge engineering in a frozen soil area are damaged to a certain extent, and the use condition of the structures on the frozen soil foundation in the severe cold area is seriously disturbed by the frost heaving problem.
The research on the physical characteristic change characteristics of soil under the freeze-thaw condition is important in the fields of frozen soil engineering, frozen soil agriculture, land water circulation and the like. The research is mainly realized by two ways of indoor simulation test and outdoor monitoring, and because the outdoor monitoring cost is higher and the repeatability is poor, the indoor simulation mode is mostly adopted for domestic determination of the physical properties of the frozen soil.
At present, in engineering design and building construction processes, in order to improve design and construction efficiency, various physical parameters of a soil body in a freezing and thawing process need to be accurately measured, and the existing indoor test device is complex in structure, long in time consumption and capable of influencing implementation progress.
Disclosure of Invention
The invention aims to provide an indoor soil body penetration test device, and aims to solve the technical problems that the test device is complex in structure, long in time consumption and influences implementation progress.
In order to achieve the purpose, the specific technical scheme of the indoor soil body penetration test device is as follows:
an indoor soil body permeation test device includes:
a container for holding a soil sample;
a water supply assembly in communication with the container;
the detection assembly is arranged on the water supply assembly and used for detecting the water flow pressure and the water flow speed;
the water permeable plate is arranged on the lower surface of the container, and one end of the water permeable plate penetrates through the side wall of the container and then extends to the outside of the container;
the water tank is arranged on the lower side of the extending end of the water permeable plate;
and the loading assembly is arranged at the upper part of the container and is used for applying pressure to the soil sample in the container.
The invention is also characterized in that:
wherein the water supply assembly includes the feed water tank, and the feed water tank setting is in the position that is close to the container, is provided with the water pipe between feed water tank and the container, and the one end of water pipe is connected on the feed water tank, and the other end of water pipe is located the top of container and is connected with the container through a plurality of connecting pipes, and the position that the water pipe is close to the feed water tank is provided with the stop valve.
Wherein detection assembly includes flowmeter and a plurality of water pressure sensor, and the flowmeter setting is close to the position of feed tank on the water pipe, and a plurality of water pressure sensor set up respectively at a plurality of connecting pipes.
The water pressure sensor is characterized by further comprising a computer terminal, wherein the computer terminal is electrically connected with the water pressure sensors and the flow meter respectively.
Wherein the loading assembly comprises a balancing weight which is arranged at the upper part of the container.
The temperature control device is characterized by further comprising a temperature control assembly, wherein the temperature control assembly is arranged outside the container and used for adjusting the temperature of the soil sample inside the container.
Wherein the temperature control assembly comprises a temperature control box, the temperature control box is sleeved outside the container, and the temperature control box is electrically connected with the computer terminal.
Wherein a thermal imager is arranged in front of the container and electrically connected with a computer terminal for monitoring the temperature change in the experimental process in real time.
Wherein the container is arranged obliquely.
According to the indoor soil body permeation test device, through the arrangement of the container, the flowmeter, the water pressure sensors and the temperature control assembly, physical parameters, namely the pressure and the flow speed of water flow, when the frozen soil sample is changed from a frozen state to a melted state and then from the melted state to the frozen state can be rapidly measured, so that the research on repeated freezing and melting of frozen soil is carried out, the building construction design and the construction efficiency are improved, meanwhile, through the inclined arrangement of the container, the frozen soil samples with different gradients can be analyzed and researched, and the building construction design and the construction efficiency are further improved.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
reference numerals are as follows:
1. a water supply tank; 2. a stop valve; 3. a flow meter; 4. a water pressure sensor; 5. a container; 6. a counterweight block; 7. a computer terminal; 8. a water permeable plate; 9. a water tank; 10. a thermal imager; 11. a water pipe; 12. and (4) connecting the pipes.
Detailed Description
In order to better understand the purpose, structure and function of the present invention, an indoor soil infiltration testing apparatus of the present invention will be described in further detail with reference to the accompanying drawings.
Example 1
As shown in figure 1, the indoor soil body permeation test device comprises a container 5, wherein the container 5 is used for containing frozen soil samples, the container 5 is obliquely arranged to enable the soil samples in the container 5 to form a gradient, a water supply assembly is arranged at a position close to the container 5 and communicated with the container 5, a detection assembly is arranged on the water supply assembly and used for detecting water flow pressure and water flow speed, a water permeable plate 8 is arranged on the lower surface of the container 5, one end of the water permeable plate 8 penetrates through the side wall of the container 5 and then extends to the outside of the container 5 and is used for draining water in the container 5 out through the water permeable plate 8, a water tank 9 is arranged on the lower side of the extending end of the water permeable plate 8, the upper portion of the water tank 9 is of an open structure and is used for containing water drained out through the water permeable plate 8, a loading assembly is arranged on the upper portion of the container 5 and is used for applying pressure to the soil samples in the container 5, and a constant value of pressure is applied.
The water supply assembly comprises a water supply tank 1, the water supply tank 1 is arranged at a position close to a container 5, a water pipe 11 is arranged between the water supply tank 1 and the container 5, one end of the water pipe 11 is connected to the water supply tank 1, the other end of the water pipe 11 is positioned above the container 5 and is connected with the container 5 through a plurality of connecting pipes 12, and a stop valve 2 is arranged at a position, close to the water supply tank 1, of the water pipe 11.
The detection assembly comprises a flow meter 3 and a plurality of water pressure sensors 4, the water pressure sensors 4 are used for detecting the pressure of water flow in the test process, the water pressure sensors 4 are used for detecting the pressure of the water flow at different gradients, the flow meter 3 is used for detecting the flow rate of the water flow in the test process, the flow meter 3 is arranged on the water pipe 11 and close to the water supply tank 1, the water pressure sensors 4 are respectively arranged on the connecting pipes 12,
the loading assembly comprises a balancing weight 6, the balancing weight 6 is arranged at the upper part of the container 5, the balancing weight 6 is fixed and unchangeable, so that a pressure positioning value is applied to the soil sample, and the balancing weight 6 is preferably a weight.
A thermal imager 10 is arranged in front of the container 5 and used for monitoring the temperature change in the experimental process in real time, so that the temperature control box is assisted to control the temperature inside the container 5.
Example 2
As shown in figure 1, the indoor soil body permeation test device comprises a container 5, wherein the container 5 is used for containing frozen soil samples, the container 5 is obliquely arranged to enable the soil samples in the container 5 to form a gradient, a water supply assembly is arranged at a position close to the container 5 and communicated with the container 5, a detection assembly is arranged on the water supply assembly and used for detecting water flow pressure and water flow speed, a water permeable plate 8 is arranged on the lower surface of the container 5, one end of the water permeable plate 8 penetrates through the side wall of the container 5 and then extends to the outside of the container 5 and is used for draining water in the container 5 out through the water permeable plate 8, a water tank 9 is arranged on the lower side of the extending end of the water permeable plate 8, the upper portion of the water tank 9 is of an open structure and is used for containing water drained out through the water permeable plate 8, a loading assembly is arranged on the upper portion of the container 5 and is used for applying pressure to the soil samples in the container 5, and a constant value of pressure is applied.
The water supply assembly includes water supply tank 1, and water supply tank 1 sets up in the position that is close to container 5, is provided with water pipe 11 between water supply tank 1 and the container 5, and the one end of water pipe 11 is connected on water supply tank 1, and the other end of water pipe 11 is located the top of container 5 and is connected with container 5 through a plurality of connecting pipes 12, and the position that water pipe 11 is close to water supply tank 1 is provided with stop valve 2.
The detection assembly comprises a flow meter 3 and a plurality of water pressure sensors 4, the water pressure sensors 4 are used for detecting the pressure of water flow in the test process, the water pressure sensors 4 are used for detecting the pressure of the water flow at different gradients, the flow meter 3 is used for detecting the flow rate of the water flow in the test process, the flow meter 3 is arranged on the water pipe 11 and close to the water supply tank 1, the water pressure sensors 4 are respectively arranged on the connecting pipes 12,
the loading assembly comprises a balancing weight 6, the balancing weight 6 is arranged at the upper part of the container 5, the balancing weight 6 is fixed and invariable, so that pressure is applied to the soil sample for positioning and fixing, and the balancing weight 6 is preferably a weight.
The container 5 the place ahead is provided with thermal imaging system 10, and thermal imaging system 10 is connected with computer terminal 7 electricity for the change of temperature in the real-time supervision experimentation to supplementary accuse temperature cabinet control container 5 inside temperature.
The outside of the container 5 is provided with a temperature control component which is used for adjusting the temperature of the soil sample in the container 5, the temperature adjusting range is-20 ℃ to 20 ℃, so that the frozen soil sample is changed from a frozen state to a melted state and then from the melted state to the frozen state, and the physical parameters in the changing process, namely the pressure and the flow rate of the water flow, are measured
The temperature control assembly comprises a temperature control box, the temperature control box is sleeved outside the container 5, and the temperature inside the container 5 is controlled to change within the range of minus 20 ℃ to 20 ℃.
Example 3
As shown in figure 1, the indoor soil body infiltration test device comprises a container 5, wherein the container 5 is used for containing a frozen soil sample, the container 5 is obliquely arranged to enable the soil sample in the container 5 to form a gradient, a water supply assembly is arranged at a position close to the container 5 and communicated with the container 5, a detection assembly is arranged on the water supply assembly and used for detecting water flow pressure and water flow speed, a water permeable plate 8 is arranged on the lower surface of the container 5, one end of the water permeable plate 8 penetrates through the side wall of the container 5 and then extends to the outside of the container 5 and is used for draining water in the container 5 through the water permeable plate 8, a water tank 9 is arranged on the lower side of the extending end of the water permeable plate 8, the upper portion of the water tank 9 is of an open structure and is used for containing water drained through the water permeable plate 8, a loading assembly is arranged on the upper portion of the container 5 and is used for applying pressure to the soil sample in the container 5, and a constant value of pressure is applied.
The water supply assembly includes water supply tank 1, and water supply tank 1 sets up in the position that is close to container 5, is provided with water pipe 11 between water supply tank 1 and the container 5, and the one end of water pipe 11 is connected on water supply tank 1, and the other end of water pipe 11 is located the top of container 5 and is connected with container 5 through a plurality of connecting pipes 12, and the position that water pipe 11 is close to water supply tank 1 is provided with stop valve 2.
The detection component comprises a flowmeter 3 and a plurality of water pressure sensors 4, the water pressure sensors 4 are used for detecting the pressure of water flow in the test process, the water pressure sensors 4 are used for detecting the pressure of water flow at different gradients, the flowmeter 3 is used for detecting the flow rate of water flow in the test process, the flowmeter 3 is arranged at a position on the water pipe 11 close to the water supply tank 1, the water pressure sensors 4 are respectively arranged on the connecting pipes 12,
the loading assembly comprises a balancing weight 6, the balancing weight 6 is arranged at the upper part of the container 5, the balancing weight 6 is fixed and invariable, so that pressure is applied to the soil sample for positioning and fixing, and the balancing weight 6 is preferably a weight.
The thermal imager 10 is arranged in front of the container 5, and the thermal imager 10 is electrically connected with the computer terminal 7 and used for monitoring the temperature change in the experimental process in real time, so that the temperature control box is assisted to control the temperature inside the container 5.
The outside of the container 5 is provided with a temperature control assembly which is used for adjusting the temperature of the soil sample in the container 5 within the range of minus 20 ℃ to 20 ℃, so that the frozen soil sample is changed from a frozen state to a melted state and then from the melted state to the frozen state, and the physical parameters in the change process, namely the pressure and the flow rate of the water flow, are measured
The temperature control assembly comprises a temperature control box, the temperature control box is sleeved outside the container 5, and the temperature inside the container 5 is controlled to change within the range of minus 20 ℃ to 20 ℃.
The invention also comprises a computer terminal 7, wherein the computer terminal 7 is respectively electrically connected with the plurality of water pressure sensors 4, the flowmeter 3, the thermal imager 10 and the temperature control box, the plurality of water pressure sensors 4 feed back the measured water pressure values to the computer terminal 7, the flowmeter 3 feeds back the measured water flow speed values to the computer terminal 7, and the computer terminal 7 analyzes the received water pressure values and water flow speed values, thereby improving the design and construction efficiency of building construction.
The working principle is that when the device is used, a frozen soil sample is added into a container 5, a balancing weight 6 is arranged at the upper part of the container 5, the temperature of a temperature control box is controlled to change at 0-20 ℃ through a computer terminal 7, then the temperature of the temperature control box is changed from 20 ℃ to-20 ℃, the frozen soil sample in the container 5 is changed from a frozen state to a melted state, then the melted state is changed into the frozen state, a stop valve 2 is opened while the temperature control box is started, water flow in a water supply box 1 flows into the container 5 through a water pipe 11 and a plurality of connecting pipes 12, a plurality of water flows penetrate into the bottom of the container 5 through the frozen soil samples with different gradients, and then the water flows out of the container 5 through a water permeable plate 8 and fall into a water tank 9, in the process, a plurality of water pressure sensors 4 continuously feed back measured water pressure values to the computer terminal 7, a flowmeter 3 feeds back measured water flow speed values to the computer terminal 7, and the computer terminal 7 divides the received water flow speed values and the water pressure values of the frozen soil samples with different gradients And the construction design and the construction efficiency are improved.
According to the indoor soil body permeation test device, through the arrangement of the container, the flowmeter, the water pressure sensors and the temperature control assembly, physical parameters, namely the pressure and the flow speed of water flow, when the frozen soil sample is changed from a frozen state to a melted state and then from the melted state to the frozen state can be rapidly measured, so that the research on repeated freezing and melting of frozen soil is carried out, the building construction design and the construction efficiency are improved, meanwhile, through the inclined arrangement of the container, the frozen soil samples with different gradients can be analyzed and researched, and the building construction design and the construction efficiency are further improved.
It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes in the features and embodiments, or equivalent substitutions may be made therein by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides an indoor soil body permeation test device which characterized in that includes:
a container (5) for holding a soil sample;
a water supply assembly in communication with the container (5);
the detection assembly is arranged on the water supply assembly and used for detecting the water flow pressure and the water flow speed;
the water permeable plate (8) is arranged on the lower surface of the container (5), and one end of the water permeable plate penetrates through the side wall of the container (5) and then extends to the outside of the container (5);
a water tank (9) arranged below the extending end of the permeable plate (8);
and the loading assembly is arranged at the upper part of the container (5) and is used for applying pressure to the soil sample in the container (5).
2. An indoor soil body infiltration test device according to claim 1, characterized in that, the water supply subassembly includes feed water tank (1), feed water tank (1) sets up the position that is close to container (5), be provided with water pipe (11) between feed water tank (1) and container (5), the one end of water pipe (11) is connected on feed water tank (1), the other end of water pipe (11) is located the top of container (5) and is connected with container (5) through a plurality of connecting pipe (12), the position that feed water tank (1) is close to in water pipe (11) is provided with stop valve (2).
3. An indoor soil body infiltration test device according to claim 2, characterized in that the detection component comprises a flow meter (3) and a plurality of water pressure sensors (4), the flow meter (3) is arranged on the water pipe (11) near the water supply tank (1), and the plurality of water pressure sensors (4) are respectively arranged on the plurality of connecting pipes (12).
4. The permeation test device with the loading and temperature control functions according to claim 3, further comprising a computer terminal (7), wherein the computer terminal (7) is electrically connected with the plurality of water pressure sensors (4) and the flow meter (3) respectively.
5. An indoor soil mass infiltration test device according to claim 1, characterized in that the loading assembly comprises a counterweight (6), the counterweight (6) being arranged at the upper part of the container (5).
6. An indoor soil mass infiltration test device according to claim 4, characterized by further comprising a temperature control assembly, wherein the temperature control assembly is arranged outside the container (5) and is used for adjusting the temperature of the soil sample inside the container (5).
7. An indoor soil infiltration test device according to claim 6, wherein the temperature control component comprises a temperature control box, the temperature control box is sleeved outside the container (5), and the temperature control box is electrically connected with the computer terminal (7).
8. An indoor soil body permeation test device according to claim 4, wherein a thermal imaging instrument (10) is arranged in front of the container (5), and the thermal imaging instrument (10) is electrically connected with a computer terminal (7) and used for monitoring temperature changes in the experimental process in real time.
9. An indoor soil infiltration test device according to claim 1, characterized in that the container (5) is arranged obliquely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210483582.8A CN114778411A (en) | 2022-05-06 | 2022-05-06 | Indoor soil body permeation test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210483582.8A CN114778411A (en) | 2022-05-06 | 2022-05-06 | Indoor soil body permeation test device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819920A (en) * | 2015-03-24 | 2015-08-05 | 河南理工大学 | Varying-head permeability experiment apparatus for indoor freezing and thawing equipment |
| CN110297075A (en) * | 2019-07-31 | 2019-10-01 | 长江师范学院 | Box slope model test system |
| CN209690207U (en) * | 2019-03-22 | 2019-11-26 | 辽宁工程技术大学 | A kind of laboratory testing rig for simulating subgrade engineering freeze-thaw damage phenomenon |
| CN209975598U (en) * | 2019-05-05 | 2020-01-21 | 石家庄铁道大学 | Multifunctional side slope model test device |
| CN213275416U (en) * | 2020-07-29 | 2021-05-25 | 兰州大学 | Water heat dynamic change detector for soil freezing and thawing process |
-
2022
- 2022-05-06 CN CN202210483582.8A patent/CN114778411A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104819920A (en) * | 2015-03-24 | 2015-08-05 | 河南理工大学 | Varying-head permeability experiment apparatus for indoor freezing and thawing equipment |
| CN209690207U (en) * | 2019-03-22 | 2019-11-26 | 辽宁工程技术大学 | A kind of laboratory testing rig for simulating subgrade engineering freeze-thaw damage phenomenon |
| CN209975598U (en) * | 2019-05-05 | 2020-01-21 | 石家庄铁道大学 | Multifunctional side slope model test device |
| CN110297075A (en) * | 2019-07-31 | 2019-10-01 | 长江师范学院 | Box slope model test system |
| CN213275416U (en) * | 2020-07-29 | 2021-05-25 | 兰州大学 | Water heat dynamic change detector for soil freezing and thawing process |
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