CN112729998A - Seepage consolidation soil sample preparation device for fluid-plastic state soil - Google Patents
Seepage consolidation soil sample preparation device for fluid-plastic state soil Download PDFInfo
- Publication number
- CN112729998A CN112729998A CN202110166970.9A CN202110166970A CN112729998A CN 112729998 A CN112729998 A CN 112729998A CN 202110166970 A CN202110166970 A CN 202110166970A CN 112729998 A CN112729998 A CN 112729998A
- Authority
- CN
- China
- Prior art keywords
- soil
- soil sample
- cylinder
- plastic state
- seepage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002689 soil Substances 0.000 title claims abstract description 128
- 238000007596 consolidation process Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000004575 stone Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 4
- 238000001764 infiltration Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005527 soil sampling Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a seepage consolidation soil sample preparation device for soil in a flow plastic state, which comprises a rigid base with seepage holes and a cylinder; the bottom of the cylinder is provided with a water seepage stone on the rigid base, the upper part of the cylinder is provided with a waterproof baffle which can move up and down in the cylinder, and a fluid-plastic soil sample is filled between the waterproof baffle and the water seepage stone; and a loading weight is arranged on the impervious baffle in the cylinder and is used for uniformly extruding and deforming the soil sample in the flow plastic state, and moisture is discharged in time through the water seepage holes of the rigid base in the process of compressing the soil sample in the flow plastic state. The invention has simple structure, convenient operation, lower cost and good timeliness, can prepare soil samples with different sizes according to requirements, can perform consolidation drainage on the soil samples, and performs a low-pressure consolidation test on the soil to test the consolidation parameters of the soil; and the prepared soil sample is ensured to be close to the actual environment of the undisturbed soil as much as possible, the influence of disturbance on the structure of the soil is reduced, and the physicochemical property and strength of the soil are more truly measured.
Description
Technical Field
The invention relates to the technical field of soil sample preparation devices, in particular to a seepage consolidation soil sample preparation device for soil in a flowing plastic state, which is suitable for preparing soil samples for soil in an underwater sedimentation flowing plastic state.
Background
With the development of economy, the demand for mineral products is greatly increased, the mining development scale is larger and larger, the quantity of generated tailings is increased, and in order to meet the increasing demand of the mineral products, the mineral separation scale is increased, so that the quantity of the generated tailings is also increased sharply, and a large amount of accumulated tailings cause a plurality of problems of environment, economy and safety. As the tailings and industrial waste residues are piled up higher and higher, a tailing pond becomes a high-potential artificial debris flow danger source, the danger of dam break exists, and the environmental problems that harmful components in the tailings are discharged, farmlands are damaged, riverways are silted up and the like can be caused, so that the research on the chemical and mechanical properties of the tailings is particularly important.
The tailings are complex porous media consisting of three phases of solid, liquid and gas, the states of the phases and the interaction of the phases have important influence on the physicochemical properties and the soil strength of the tailings, the tailings are filled and settled by water power after being discharged into a tailing pond, and the tailings are heightened year by year to form a tailing dam, but the settling time of each part in the tailings is greatly different, and the consolidation degree, the density and the stress field of each part are different.
The existing research on physicochemical properties and strength of tailings is to dry and then carry out various field soil body simulation conditions on a soil sample, the structure of the soil sample is possibly damaged due to disturbance in the process of preparing the soil sample and is not in line with the process of compacting soil body by gradually piling up a field tailing dam, and the soil sample is made into a cylindrical sample with a certain specification when an indoor triaxial test of soil is carried out, wherein the sample is usually 39.1mm multiplied by 80 mm; when performing indoor consolidation, infiltration experiment or direct shear experiment of soil, the soil sample is made to be 61.8mm × 40mm or 61.8mm × 20 mm. For the soil in the flow plastic state, after consolidation and dehydration, the volume of the soil sample is reduced, and the required height of the sample is difficult to achieve.
Disclosure of Invention
Based on the defects in the prior art, the technical problem to be solved by the invention is to provide the seepage consolidation soil sample preparation device for the soil in the flow plastic state, which has a simple structure and is convenient and quick to operate, can prepare soil samples with different sizes according to requirements, can perform consolidation drainage on the soil samples, can perform a low-pressure consolidation test on the soil, and can test the consolidation parameters of the soil.
In order to achieve the purpose, the invention adopts the following technical measures:
a seepage consolidation soil sample preparation device for soil in a flow plastic state comprises a rigid base with seepage holes and a cylinder placed on the rigid base; the bottom of the cylinder is provided with a water seepage stone on the rigid base, the upper part of the cylinder is provided with a waterproof baffle capable of moving up and down in the cylinder, and a fluid-plastic soil sample is filled between the waterproof baffle and the water seepage stone; and a loading weight is arranged on the impermeable baffle plate in the cylinder and is used for uniformly extruding and deforming the soil sample in the flow plastic state, and water is timely discharged through the water seepage holes of the rigid base in the process of compressing the soil sample in the flow plastic state.
Preferably, a layer of filter paper is arranged on the water seepage stone and is used for discharging water in the compression process of the soil sample in the plastic state and ensuring that the soil sample cannot run off; and the fluid-plastic state soil sample is placed between the impermeable baffle and the filter paper.
Furthermore, the lower end of the rigid base is provided with a hollow water storage space.
Preferably, a drain hose is connected to a bottom of a side surface of the water storage space.
Preferably, the inner diameter of the cylinder is 61.8mm or 39.1 mm.
According to the invention, by increasing the size of the soil sampling device, the tailings generally belong to fine-grained soil, the larger the plasticity index is, the larger the compressibility is, the larger the super-consolidation ratio is, and the larger the deformation modulus is, and the soil sample is compacted by adopting weights with different weights, and in the process, the rigidity or deformation modulus of the soil is increased along with the increase of the weight, and different required consolidation ratios are achieved.
The invention provides a soil sampling device for soil in a flowing plastic state, which is convenient and quick to operate, has a simple structure and can be used for preparing soil samples with different sizes according to requirements. The device prepares the soil sample and accords with the environment that the actual scene tailings where the tailings are located are gradually compacted, reduces the influence of the process of drying the soil sample and then preparing remolded soil on the strength and the physicochemical property of the soil.
The invention solves the problems that the traditional underwater soil can only be sampled and dried to research the components and mechanical properties of the soil, the actual situation of the field is better met by taking out the soil sample through consolidating and dehydrating the soil, and the size of the prepared soil sample is increased by consolidating and draining the soil through the size of the designed device.
The most critical parts of the 7 parts are a cylinder and a weight, the weight can adjust the confining pressure required during consolidation, the size of the cylinder is the same as that of the triaxial sample, the triaxial sample can be directly prepared by the device, the rigid base with the water seepage hole is connected with the hose, the cylinder is arranged on the rigid base, the permeable stone and the filter paper are sequentially arranged at the bottom of the cylinder, placing a sample on the filter paper, placing a waterproof baffle and a heavy object on the sample, so that the consolidation and dehydration of the soil and the taking out of the soil sample are more in line with the actual situation of the site, meanwhile, the change of the axial pressure can be realized by adjusting the weight of the weight, and meanwhile, the cylinder is made of transparent Jacobian materials, so that the consolidation degree is convenient to monitor, the device prepares the soil sample and accords with the environment that the actual scene tailings where the tailings are located are gradually compacted, reduces the influence of the process of drying the soil sample and then preparing remolded soil on the strength and the physicochemical property of the soil.
Compared with the prior art, the seepage consolidation soil sample preparation device for the fluid plastic state soil has the beneficial effects and advantages that:
1. simple and convenient operation, simple structure and low cost.
2. The soil in the flow plastic state can reach the required sample size after volume compression.
3. Soil samples with different consolidation ratios are prepared by changing the weight of the weight.
4. The moisture of the fluid plastic state soil can be smoothly removed after the soil is compressed.
5. The density of the prepared soil sample is uniform, and the soil sample can be taken out through the dismounting device.
Drawings
FIG. 1 is a schematic structural view of a seepage consolidation soil sample preparation device for soil in a flow molding state.
FIG. 2 is a schematic structural diagram of each part of the seepage consolidation soil sample preparation device for soil in a flow molding state of the invention.
Wherein, 1-load weight, 2-impervious baffle, 3-filter paper, 4-permeable stone, 5-rigid base with water seepage hole, 6-drainage hose, 7-cylinder.
Detailed Description
The apparatus for preparing a fluid-solidified soil sample of fluid-plastic state soil according to the present invention will be described in detail with reference to fig. 1 to 2.
As shown in figure 1, the seepage consolidation soil sample preparation device for the soil in the flow plastic state comprises a rigid base 5 with seepage holes, a permeable stone 4, a filter paper 3, the soil sample in the flow plastic state, a waterproof baffle 2, a loading weight (such as a weight) 1, a cylinder 7 and a drainage hose 6, wherein the size of the device for storing the soil sample is large, the device is suitable for the characteristic of large compressibility of the flow plastic soil, the size of the cylinder 7 for storing the soil sample can be 61.8mm multiplied by 240mm, a pressure system is replaced by the traditional loading weight, and the soil sample is placed in a pressure chamber of the cylinder 7. The inner diameter of the cylinder 7 may be set to 39.1 mm.
The loading heavy object 1 can be adjusted as required, impervious baffle 2 and drum 7 are rigid, can not take place the deformation because of the atress, the state soil sample of flow moulding is placed between impervious baffle 2 and filter paper 3, only the state soil sample of flow moulding takes place to warp, 5 areas of rigid base permeate water infiltration holes, can let the state soil sample of flow moulding in by the pressure in-process, moisture in time discharges, 5 lower extremes of rigid base have the space of fretwork to deposit water, rigid base 5 connects drainage hose 6 in the side bottom, drainage hose 6 and 5 deposit water space intercommunication of rigid base lower extreme, then moisture can discharge through drainage hose 6.
Wherein, the loading weight 1, the impermeable baffle 2, the flow-plastic soil sample, the filter paper 3 and the permeable stone 4 are arranged inside the cylinder 7 from top to bottom in sequence.
The loading weight 1 acts on the impermeable baffle 2 to ensure that the flow-plastic soil sample is stressed uniformly in the process of being compressed, so that the density of the soil sample is uniform. Flow and mould state soil sample underpart pad one deck filter paper 3 for flow and mould state soil sample can discharge at the compression in-process normal water, and guarantee that soil sample can not run off, the lower extreme of filter paper 3 is permeable stone 4, is the rigid base 5 in area infiltration hole below the permeable stone 4, concreties the drainage when soil sample, through filter paper 3 through permeable stone 4, passes through the infiltration hole of lower part again, flows to rigid base 5 in, discharges water through drainage hose 6 at last.
Wherein, the permeable stone 4 has still played the effect of supporting the soil sample, guarantees that entire system only soil sample is compressed, the compression soil sample of preparing according to certain consolidation ratio.
The invention indirectly realizes uniform compression of the soil sample by loading the baffle with the loading weight 1. The filter paper 3 and the permeable stone 4 are arranged at the lower end of the soil sample, moisture can be smoothly discharged in the process of consolidation and drainage of the soil sample, the rigid cylinder wall is large in size, and after compression is carried out, the prepared soil sample can still reach the sample size required by a triaxial test. The soil sample preparation device is simple in structure, convenient to operate, low in required cost and good in timeliness, the prepared soil sample is guaranteed to be close to the actual environment of undisturbed soil as much as possible, the influence of disturbance on the structure of the soil is reduced, and the soil physicochemical property and strength determination is more authentic.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can understand that the modifications or substitutions within the technical scope of the present invention should be included in the scope of the present invention.
Claims (5)
1. A seepage consolidation soil sample preparation device for soil in a flow plastic state is characterized by comprising a rigid base with seepage holes and a cylinder placed on the rigid base;
the bottom of the cylinder is provided with a water seepage stone on the rigid base, the upper part of the cylinder is provided with a waterproof baffle capable of moving up and down in the cylinder, and a fluid-plastic soil sample is filled between the waterproof baffle and the water seepage stone;
and a loading weight is arranged on the impermeable baffle plate in the cylinder and is used for uniformly extruding and deforming the soil sample in the flow plastic state, and water is timely discharged through the water seepage holes of the rigid base in the process of compressing the soil sample in the flow plastic state.
2. The device for preparing the seepage consolidation soil sample of the fluid-plastic state soil according to claim 1, wherein a layer of filter paper is arranged on the water seepage stone and is used for discharging water in the compression process of the fluid-plastic state soil sample and ensuring that the soil sample cannot run off;
and the fluid-plastic state soil sample is placed between the impermeable baffle and the filter paper.
3. The apparatus for preparing a seepage consolidation soil sample of fluid-plastic state soil as claimed in claim 1, wherein the lower end of the rigid base has a hollow water storage space.
4. The apparatus for preparing a seepage consolidated soil sample of fluid plastic state soil as claimed in claim 3, wherein a drainage hose is connected to the bottom of the side of the water storage space.
5. The apparatus for preparing a seepage consolidation soil sample of fluid state soil of claim 1, wherein the inner diameter of the cylinder is 61.8mm or 39.1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110166970.9A CN112729998A (en) | 2021-02-05 | 2021-02-05 | Seepage consolidation soil sample preparation device for fluid-plastic state soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110166970.9A CN112729998A (en) | 2021-02-05 | 2021-02-05 | Seepage consolidation soil sample preparation device for fluid-plastic state soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112729998A true CN112729998A (en) | 2021-04-30 |
Family
ID=75596262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110166970.9A Pending CN112729998A (en) | 2021-02-05 | 2021-02-05 | Seepage consolidation soil sample preparation device for fluid-plastic state soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112729998A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009616A (en) * | 1998-06-26 | 2000-01-14 | Takenaka Komuten Co Ltd | Indoor mixing test method for deep-layer mixing processing construction of sandy soil |
| CN202814770U (en) * | 2012-08-29 | 2013-03-20 | 中国科学院武汉岩土力学研究所 | Remolded soil sample preparation device for triaxial shear test |
| CN104777016A (en) * | 2015-01-14 | 2015-07-15 | 南京工业大学 | Slurry consolidating sample production apparatus and use method thereof |
| KR101675368B1 (en) * | 2015-08-10 | 2016-11-11 | 한국건설기술연구원 | Apparatus and Method for Freezing and Thawing of Soil Specimen |
| CN206074332U (en) * | 2016-10-17 | 2017-04-05 | 周瑞荣 | A kind of oil cylinder hydraulic formula manipulated soil compresses sample sample preparation device |
| CN107807030A (en) * | 2017-12-23 | 2018-03-16 | 魏雨町 | A kind of preparation of soil sample device and its application method with cutting ring locating slot |
| CN211401865U (en) * | 2019-12-05 | 2020-09-01 | 中交天津航道局有限公司 | Flow plastic-soft plastic dredging clay remolding device |
| CN214538847U (en) * | 2021-02-05 | 2021-10-29 | 中国科学院武汉岩土力学研究所 | Seepage consolidation soil sample preparation device for fluid-plastic state soil |
-
2021
- 2021-02-05 CN CN202110166970.9A patent/CN112729998A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000009616A (en) * | 1998-06-26 | 2000-01-14 | Takenaka Komuten Co Ltd | Indoor mixing test method for deep-layer mixing processing construction of sandy soil |
| CN202814770U (en) * | 2012-08-29 | 2013-03-20 | 中国科学院武汉岩土力学研究所 | Remolded soil sample preparation device for triaxial shear test |
| CN104777016A (en) * | 2015-01-14 | 2015-07-15 | 南京工业大学 | Slurry consolidating sample production apparatus and use method thereof |
| KR101675368B1 (en) * | 2015-08-10 | 2016-11-11 | 한국건설기술연구원 | Apparatus and Method for Freezing and Thawing of Soil Specimen |
| CN206074332U (en) * | 2016-10-17 | 2017-04-05 | 周瑞荣 | A kind of oil cylinder hydraulic formula manipulated soil compresses sample sample preparation device |
| CN107807030A (en) * | 2017-12-23 | 2018-03-16 | 魏雨町 | A kind of preparation of soil sample device and its application method with cutting ring locating slot |
| CN211401865U (en) * | 2019-12-05 | 2020-09-01 | 中交天津航道局有限公司 | Flow plastic-soft plastic dredging clay remolding device |
| CN214538847U (en) * | 2021-02-05 | 2021-10-29 | 中国科学院武汉岩土力学研究所 | Seepage consolidation soil sample preparation device for fluid-plastic state soil |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105784444A (en) | Indoor apparatus and method for producing hollow cylindrical remolded clay specimen by compressing | |
| CN104777016B (en) | A kind of sludge consolidating sample making apparatus and its application method | |
| CN103981853B (en) | A kind of manipulated soil vacuum preloading equipment and one-tenth earth process | |
| CN210719879U (en) | Test device for preparing rock-like transparent material by using vacuum consolidation method | |
| CN104914029B (en) | Large scale city solid waste skeleton and pore water Volume Changes coefficient measuring device | |
| CN108101341A (en) | High speed dewatering of slurries device | |
| CN112946238B (en) | Seabed soft clay consolidation test method | |
| CN111337415A (en) | Full-automatic hydraulic infiltration consolidation device | |
| JP2010279860A5 (en) | ||
| CN214538847U (en) | Seepage consolidation soil sample preparation device for fluid-plastic state soil | |
| CN113552037B (en) | Device and method for testing dual-porosity seepage parameters of garbage | |
| CN204630786U (en) | A kind of sludge consolidating sample making apparatus | |
| CN112729998A (en) | Seepage consolidation soil sample preparation device for fluid-plastic state soil | |
| CN112985948A (en) | Mounting method, dismounting method and using method of hollow cylindrical sample | |
| CN205426613U (en) | Indoor hollow cylinder remolds clay sample compression preparation facilities | |
| CN110346198B (en) | Triaxial remolded sample batch rapid preparation device and preparation method | |
| Krisdani et al. | Measurement of geotextile-water characteristic curve using capillary rise principle | |
| CN204694600U (en) | A kind of large scale city solid waste skeleton and pore water volume change coefficient measuring device | |
| CN106840995B (en) | Physical simulation device and method for measuring salt cavern gas storage residue void utilization rate | |
| JP6618328B2 (en) | Method of dewatering mud | |
| CN115979915A (en) | Device and method for contrastively measuring permeability of multiple groups of unsaturated soil | |
| CN112504939A (en) | Device and method for measuring compressibility and permeability of dredged mud with high water content | |
| CN203977402U (en) | Manipulated soil vacuum preloading equipment | |
| CN210775104U (en) | MBT garbage field water holding capacity measuring device | |
| CN214472179U (en) | Sample preparation device for hollow cylindrical sample |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |