CN204255812U - The device for testing permeability coefficient of original state coarse-grained soil - Google Patents
The device for testing permeability coefficient of original state coarse-grained soil Download PDFInfo
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- CN204255812U CN204255812U CN201420656214.XU CN201420656214U CN204255812U CN 204255812 U CN204255812 U CN 204255812U CN 201420656214 U CN201420656214 U CN 201420656214U CN 204255812 U CN204255812 U CN 204255812U
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- volumetric cylinder
- sampler
- water
- original state
- permeability coefficient
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Abstract
The utility model relates to a kind of device for testing permeability coefficient of original state coarse-grained soil, comprises volumetric cylinder, water filling device, gravel bed device, porous disc, water trap and for supporting the bracing frame with upper-part; Described water trap, volumetric cylinder and gravel bed device from the bottom to top order are arranged, and water filling device is located at above gravel bed device, and volumetric cylinder is the cylinder that two ends are equipped with flange, are equipped with porous disc between gravel water layer device and water trap and volumetric cylinder; Sampler is provided with in described volumetric cylinder, sampler is cylindric, its lower end is provided with blade upper end and is provided with flange, the cylindrical shell external diameter of sampler and the internal diameter of volumetric cylinder match, it is simple to operate, the preparation of soil sample and soil sample saturation history take a short time, soil sample and chamber wall laminating are tightly, multiple soil sample revision test is consuming time short, the infiltration coefficient recorded is accurate, the infiltration coefficient of the soil sample keeping primary structure can be measured accurately by computing machine by the water percolating capacity obtained, infiltration time and hydraulic pressure value, necessary for engineering reality.
Description
Technical field
The utility model relates to a kind of proving installation, especially the device for testing permeability coefficient of original state coarse-grained soil.
Background technology
Infiltration coefficient is also known as hydraulic conductivity.In isotropic medium, it is defined as the specific discharge under specific potential gradient, represent that fluid is by the complexity of pore framework, expression formula is: κ=k ρ g/ η, and in formula, k is the permeability for pore media, and it is only relevant with the character of solid skeletal.At present, the infiltration coefficient test of coarse-grained soil adopts conventional infiltration instrument, also has the instrument development by transforming conventional permeameter and experimental study.But still there is complicated operation, the preparation of soil sample and soil sample saturation history spended time long, soil sample and chamber wall laminating imprecision, the defect of multiple soil sample revision tests length consuming time, cause the infiltration coefficient that records inaccurate, when to hold in soil sample containing certain clay, silty clay soil, the prototype structure of soil sample is kept more to be of practical significance for engineer applied.
Utility model content
In order to solve the problem, the utility model provides a kind of device for testing permeability coefficient of original state coarse-grained soil, simple to operate, the preparation of soil sample and soil sample saturation history take a short time, tightly, multiple soil sample revision test is consuming time short, and the infiltration coefficient recorded is accurate for soil sample and chamber wall laminating, the infiltration coefficient of the soil sample keeping primary structure can be measured accurately by computing machine by the water percolating capacity obtained, infiltration time and hydraulic pressure value, necessary for engineering reality.When containing certain clay, silty clay soil in soil sample, the prototype structure of soil sample is kept more to be of practical significance for engineer applied.
The utility model is achieved through the following technical solutions: a kind of device for testing permeability coefficient of original state coarse-grained soil, comprises volumetric cylinder, water filling device, gravel bed device, porous disc, water trap and for supporting the bracing frame with upper-part; Described water trap, volumetric cylinder and gravel bed device from the bottom to top order are arranged, and water filling device is located at above gravel bed device, and volumetric cylinder is the cylinder that two ends are equipped with flange, are equipped with porous disc between gravel water layer device and water trap and volumetric cylinder; Be provided with sampler in described volumetric cylinder, sampler is cylindric, and its lower end is provided with blade upper end and is provided with flange, and the cylindrical shell external diameter of sampler and the internal diameter of volumetric cylinder match.
Described water trap is funnel-form, and bottom sets out the mouth of a river, and vent port is established in side, and water outlet arranges water percolating capacity detecting device, for monitoring seepage flow.
The flange of described sampler is provided with mounting hole.
Described volumetric cylinder is connected by bolt with bracing frame, sampler and gravel bed device.
The connecting portion of described volumetric cylinder and bracing frame, sampler and gravel bed device is provided with rubber gasket.
The thickness of described rubber gasket is preferably 1.5 ~ 3mm.
The beneficial effects of the utility model are: a kind of device for testing permeability coefficient of original state coarse-grained soil, simple to operate, the preparation of soil sample and soil sample saturation history take a short time, soil sample and chamber wall laminating are tightly, multiple soil sample revision test is consuming time short, the infiltration coefficient recorded is accurate, can be measured the infiltration coefficient of the soil sample keeping primary structure by the water percolating capacity obtained, infiltration time and hydraulic pressure value by computing machine accurately, necessary for engineering reality.When containing certain clay, silty clay soil in soil sample, the prototype structure of soil sample is kept more to be of practical significance for engineer applied.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is a kind of structural representation of device for testing permeability coefficient of original state coarse-grained soil.
In figure, 1. volumetric cylinder, 2. water filling device, 3. gravel bed device, 4. porous disc, 5. water trap, 6. bracing frame, 7. sampler, 8. rubber gasket.
Embodiment
In the accompanying drawings, a kind of device for testing permeability coefficient of original state coarse-grained soil, comprises volumetric cylinder 1, water filling device 2, gravel bed device 3, porous disc 4, water trap 5 and for supporting the bracing frame 6 with upper-part; Described water trap 5, volumetric cylinder 1 and gravel bed device 3 from the bottom to top order are arranged, and water filling device 2 is located at above gravel bed device 3, and volumetric cylinder 1 is equipped with the cylinder of flange for two ends, are equipped with porous disc 4 between gravel water layer device 3 and water trap 5 and volumetric cylinder 1; Be provided with sampler 7 in described volumetric cylinder 1, sampler 7 is cylindric, and its lower end is provided with blade upper end and is provided with flange, and the cylindrical shell external diameter of sampler 7 and the internal diameter of volumetric cylinder 1 match.
Described water trap 5 is funnel-form, and bottom sets out the mouth of a river, and vent port is established in side, and water outlet arranges water percolating capacity detecting device, for monitoring seepage flow.
The flange of described sampler 7 is provided with mounting hole.
Described volumetric cylinder 1 is connected by bolt with bracing frame 6, sampler 7 and gravel bed device 3.
Described volumetric cylinder 1 is provided with rubber gasket 8 with the connecting portion of bracing frame 6, sampler 7 and gravel bed device 3.
The thickness of described rubber gasket 8 is preferably 1.5 ~ 3mm.
When utilizing the apparatus for measuring permeability coefficient of above-mentioned coarse-grained soil to measure the infiltration coefficient of coarse-grained soil, utilize pressing machine, sampler 7 down-bite jaw is pressed in fresh soil layer face by rig or artificial apparatus, sampler 7 is taken out, scabble the soil sample at sampler 7 two ends, after soil sample is fully saturated, place it in the middle of volumetric cylinder 1, the current of hydraulic devices are provided to enter from water injection pipe, infiltrate from the upper surface of soil sample, lower surface oozes out, during instillation water trap 5, the water percolating capacity detecting device being arranged on bottom can detect seepage flow and Seepage flow time accurately, by the water percolating capacity obtained, infiltration time and hydraulic pressure value can measure the infiltration coefficient of the soil sample keeping primary structure accurately by computing machine.
Claims (6)
1. a device for testing permeability coefficient for original state coarse-grained soil, comprises volumetric cylinder (1), water filling device (2), gravel bed device (3), porous disc (4), water trap (5) and for supporting with the bracing frame of upper-part (6); Described water trap (5), volumetric cylinder (1) and gravel bed device (3) from the bottom to top order are arranged, water filling device (2) is located at gravel bed device (3) top, volumetric cylinder (1) is equipped with the cylinder of flange for two ends, is equipped with porous disc (4) between gravel water layer device (3) and water trap (5) and volumetric cylinder (1); It is characterized in that, be provided with sampler (7) in described volumetric cylinder (1), sampler (7) is cylindric, and its lower end is provided with blade upper end and is provided with flange, and the cylindrical shell external diameter of sampler (7) and the internal diameter of volumetric cylinder (1) match.
2. the device for testing permeability coefficient of a kind of original state coarse-grained soil according to claim 1, is characterized in that, described water trap (5) is funnel-form, and bottom sets out the mouth of a river, and vent port is established in side, and water outlet arranges water percolating capacity detecting device, for monitoring seepage flow.
3. the device for testing permeability coefficient of a kind of original state coarse-grained soil according to claim 1, is characterized in that, the flange of described sampler (7) is provided with mounting hole.
4. the device for testing permeability coefficient of a kind of original state coarse-grained soil according to claim 3, is characterized in that, described volumetric cylinder (1) is connected by bolt with bracing frame (6), sampler (7) and gravel bed device (3).
5. the device for testing permeability coefficient of a kind of original state coarse-grained soil according to claim 1, is characterized in that, described volumetric cylinder (1) is provided with rubber gasket (8) with the connecting portion of bracing frame (6), sampler (7) and gravel bed device (3).
6. the device for testing permeability coefficient of a kind of original state coarse-grained soil according to claim 5, is characterized in that, the thickness of described rubber gasket (8) is preferably 1.5 ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656214.XU CN204255812U (en) | 2014-11-05 | 2014-11-05 | The device for testing permeability coefficient of original state coarse-grained soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420656214.XU CN204255812U (en) | 2014-11-05 | 2014-11-05 | The device for testing permeability coefficient of original state coarse-grained soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204255812U true CN204255812U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420656214.XU Expired - Fee Related CN204255812U (en) | 2014-11-05 | 2014-11-05 | The device for testing permeability coefficient of original state coarse-grained soil |
Country Status (1)
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| CN (1) | CN204255812U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866001A (en) * | 2016-04-18 | 2016-08-17 | 三峡大学 | Device and method for measuring rock-soil body osmotic coefficient based on water-based fluorescent agent dilution method |
| CN106847048A (en) * | 2017-02-28 | 2017-06-13 | 济南轨道交通集团有限公司 | Simulate the emulation Boundary Test system of artesian groundwater recharge |
| CN108344544A (en) * | 2018-04-26 | 2018-07-31 | 山东大学 | A kind of experimental rig and method measuring composite geo-membrane defect leakage |
| CN108872042A (en) * | 2018-06-26 | 2018-11-23 | 福州大学 | Sand level, vertical infiltration coefficient simultaneous determination apparatus and its test method |
| CN110082275A (en) * | 2019-05-22 | 2019-08-02 | 陕西秦海检测科技有限公司 | It is large-scale simple with the vertical seepage deformation tester of coarse-grained soil and test method |
| CN110927042A (en) * | 2019-12-09 | 2020-03-27 | 河南理工大学 | Fracture seepage experimental apparatus for coal mine |
-
2014
- 2014-11-05 CN CN201420656214.XU patent/CN204255812U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866001A (en) * | 2016-04-18 | 2016-08-17 | 三峡大学 | Device and method for measuring rock-soil body osmotic coefficient based on water-based fluorescent agent dilution method |
| CN105866001B (en) * | 2016-04-18 | 2018-08-07 | 三峡大学 | A kind of Rock And Soil osmotic coefficient investigating device and method based on water base fluorescer dilution method |
| CN106847048A (en) * | 2017-02-28 | 2017-06-13 | 济南轨道交通集团有限公司 | Simulate the emulation Boundary Test system of artesian groundwater recharge |
| CN108344544A (en) * | 2018-04-26 | 2018-07-31 | 山东大学 | A kind of experimental rig and method measuring composite geo-membrane defect leakage |
| CN108872042A (en) * | 2018-06-26 | 2018-11-23 | 福州大学 | Sand level, vertical infiltration coefficient simultaneous determination apparatus and its test method |
| CN110082275A (en) * | 2019-05-22 | 2019-08-02 | 陕西秦海检测科技有限公司 | It is large-scale simple with the vertical seepage deformation tester of coarse-grained soil and test method |
| CN110927042A (en) * | 2019-12-09 | 2020-03-27 | 河南理工大学 | Fracture seepage experimental apparatus for coal mine |
| CN110927042B (en) * | 2019-12-09 | 2022-11-11 | 河北工程大学 | Fracture seepage experimental apparatus for coal mine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20151105 |
|
| EXPY | Termination of patent right or utility model |