CN206020233U - A kind of soil body osmotic coefficient measurement apparatus for being contemplated that sticking grain silting - Google Patents
A kind of soil body osmotic coefficient measurement apparatus for being contemplated that sticking grain silting Download PDFInfo
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- CN206020233U CN206020233U CN201621051345.0U CN201621051345U CN206020233U CN 206020233 U CN206020233 U CN 206020233U CN 201621051345 U CN201621051345 U CN 201621051345U CN 206020233 U CN206020233 U CN 206020233U
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Abstract
The utility model is related to a kind of it is contemplated that the soil body osmotic coefficient measurement apparatus of sticking grain silting, including bucket, permeameter, collection bottle and vavuum pump, gas outlet and delivery port is provided with the base of permeameter, clamped using tongs gas outlet, one end of collection bottle is connected with the delivery port of permeameter, and its other end is connected with vavuum pump；Described permeameter is placed in bucket, constitutes soil sample chamber by base, permeable stone and filter membrane in described permeameter, and for placing tested infiltration soil sample, wherein, permeable stone is placed in base centre position, is covered with filter membrane above permeable stone；Tested infiltration soil sample surface is provided with the cutting ring of same inner diameter sectional area, is laid with cutting ring soil sample in cutting ring；The utility model is used for simulating Practical Project situation, considers the soil body osmotic coefficient measurement apparatus of sticking grain silting using negative pressure of vacuum.
Description
Technical field
The utility model is related to a kind of it is contemplated that the soil body osmotic coefficient measurement apparatus of sticking grain silting, belong to Geotechnical Engineering and ooze
The test apparatus of saturating coefficient determination.
Background technology
At present for barged-in fill and yard sludge recently are frequently with vacuum method process, thus can face drainage channel and
The silting problem of surrounding soil.This is because the weak soil such as barged-in fill is underconsolidated soil, stable grogs skeleton is not yet formed, true
In empty pre-compaction process, which is applied to unify after negative pressure, clay fine grained can be as current be towards row under larger osmotic pressure
Water body direction migrates, and causes filter membrane and surrounding soil silting, forms fine and close soil layer in displacement hull and surrounding, makes native around displacement hull
Layer infiltration coefficient diminishes, and hinders follow-up prepressing water discharge process.For at present, traditional infiltration instrument hydraulic gradient is relatively low, and
Do not account in Practical Project current in the soil body filter membrane and infiltration coefficient is caused towards displacement hull migration under high vacuum negative pressure
Silting situation, the infiltration coefficient error for measuring are larger, it is impossible to reflect the permeance property of Practical Project soil sample.Therefore, for reality
Engineering is needed a kind of utilization negative pressure of vacuum badly to consider the soil body osmotic coefficient measurement apparatus of sticking grain silting, so as to the actual soil body of prediction
The change of infiltration coefficient and drainage situation.
Utility model content
The utility model provides a kind of soil body osmotic coefficient measurement apparatus for being contemplated that sticking grain silting, for simulating reality
Project situation, is considered the soil body osmotic coefficient measurement apparatus of sticking grain silting, solves existing infiltration coefficient using negative pressure of vacuum
Device is determined when the weak soils such as barged-in fill are measured, it is impossible to which the existing clay fine grained of consideration migrates silting, so that it cannot instead
Reflect situation of change of the soil sample in permeance property under practical vacuum negative pressure state.
The utility model solves the technical scheme adopted by its technical problem：
A kind of it is contemplated that the soil body osmotic coefficient measurement apparatus of sticking grain silting, described soil body osmotic coefficient measurement apparatus bag
Bucket, permeameter, collection bottle and vavuum pump being included, gas outlet and delivery port being provided with the base of permeameter, gas outlet adopts
Tongs is clamped, and one end of collection bottle is connected with the delivery port of permeameter, and its other end is connected with vavuum pump；Described oozes
Instrument is placed in bucket thoroughly, constitutes soil sample chamber by base, permeable stone and filter membrane in described permeameter, for placing tested infiltration soil
Sample, wherein, permeable stone is placed in base centre position, is covered with filter membrane above permeable stone；Tested infiltration soil sample surface is provided with identical interior
The cutting ring of footpath sectional area, is laid with cutting ring soil sample in cutting ring；
Further preferably cutting ring soil sample is placed in cutting ring, and its surface is fixed by rubber membrane as of the present utility model, and
Waterproof sealing cream is coated between cutting ring soil sample and cutting ring；
As of the present utility model further preferred, vacuum meter is installed, for monitoring inside collection bottle on collection bottle
Pressure；
As of the present utility model further preferably, one end of collection bottle is connected by PU tracheaes with the delivery port of permeameter
Logical, its other end is connected with vavuum pump again by PU tracheaes, wherein, is set on the PU tracheaes that collection bottle is connected with vavuum pump
It is equipped with regulating bolt；
It is 8mm as of the present utility model further preferred, described PU tracheaes external diameter, internal diameter is 6mm；
It is 30.08cm as of the present utility model further preferred, described cutting ring internal diameter sectional area2.
By above technical scheme, relative to prior art, the utility model has the advantages that：
The utility model is applied to the ultra-soft soil draining and other similar engineering soil samples that silting easily occurs, it is ensured that sample body
Long-pending integrality, that is, ensure that the accuracy and accuracy of osmotic coefficient investigating, while the method process is simple, easy to implement,
Cost of manufacture is relatively low, can be used to analyze and consider that sticking grain migrates the infiltration coefficient that silting affects under Practical Project difference negative pressure of vacuum
Situation of change, takes less, practical.
Description of the drawings
With reference to the accompanying drawings and examples the utility model is further illustrated.
Fig. 1 is the overall structure diagram of preferred embodiment of the present utility model；
In figure：1- buckets；2- bases；3- permeable stones；4- filter membranes；The tested infiltration soil samples of 5-；6- rubber membranes；7- cutting rings soil
Sample；8- vacuum meters；9- regulating bolts；10- vavuum pumps；11- collection bottles；12-PU tracheaes.
Specific embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram,
Basic structure of the present utility model is only described in a schematic way, therefore which only shows the composition relevant with the utility model.
As shown in figure 1, of the present utility model a kind of it is contemplated that the soil body osmotic coefficient measurement apparatus of sticking grain silting, described
Soil body osmotic coefficient measurement apparatus include bucket, permeameter, collection bottle and vavuum pump, on the base of permeameter are provided with outlet
Mouthful and delivery port, gas outlet clamped using tongs, and one end of collection bottle is connected with the delivery port of permeameter, its other end and
Vavuum pump is connected；Described permeameter is placed in bucket, constitutes soil sample by base, permeable stone and filter membrane in described permeameter
Room, for placing tested infiltration soil sample, wherein, permeable stone is placed in base centre position, is covered with filter membrane above permeable stone；Tested ooze
Through soil sample surface is provided with the cutting ring of same inner diameter sectional area, is laid with cutting ring soil sample in cutting ring, a soil body when supplement negative pressure is excessive
The reduction effect of the soil sample thickness that compression and the migration of clay fine grained are caused；
Further preferably cutting ring soil sample is placed in cutting ring, and its surface is fixed by rubber membrane as of the present utility model, and
Waterproof sealing cream is coated between cutting ring soil sample and cutting ring；
As of the present utility model further preferred, vacuum meter is installed, for monitoring inside collection bottle on collection bottle
Pressure；
As of the present utility model further preferably, one end of collection bottle is connected by PU tracheaes with the delivery port of permeameter
Logical, its other end is connected with vavuum pump again by PU tracheaes, wherein, is set on the PU tracheaes that collection bottle is connected with vavuum pump
It is equipped with regulating bolt；
It is 8mm as of the present utility model further preferred, described PU tracheaes external diameter, internal diameter is 6mm；
It is 30.08cm as of the present utility model further preferred, described cutting ring internal diameter sectional area2.
Utility model works principle and specific implementation step：
(1) the interior cutting ring soil sample for applying vaseline and cutting ring are pressed into tested infiltration soil sample, subsequently by tested infiltration soil sample two
More than side, sample is cut only, and being put in vacuum reservoir behind two sample contacts face of shaving carries out vacuumizing saturation 24 hours；
(2) the infiltration soil sample of above-mentioned saturated process is placed in the soil sample chamber being made up of base, permeable stone, filter membrane, wherein
Filter membrane is located in the middle of permeable stone and tested infiltration soil sample；Cutting ring soil sample is placed in above tested infiltration soil sample, and both are scraping hair side phase
The place of connecing simultaneously is fixed by rubber membrane, is coated with waterproof sealing cream between cutting ring soil sample and cutting ring；
(3) whole infiltration instrument apparatus are placed in bucket and are not had below upstream face, gas outlet is set on permeameter base and is gone out
Clamped using tongs in the mouth of a river, gas outlet；Base delivery port, collection bottle and vavuum pump are connected respectively by PU tracheaes, opened
Vavuum pump makes soil sample chamber full of negative pressure of vacuum, and tested infiltration soil sample produces atm difference up and down, this permeable pressure head promote current from
Soil sample upper end keeps vacustat by regulating bolt to lower end seepage flow in test；
(4) according to live practice of construction situation such as table 1, (project silt soil initial infiltration coefficient in Wenzhou is 2.49E-
06cm/s), the combined system of soil sample and filter membrane (is arranged under water conservancy gradient i), different water-flowing amount Q in different vacuum pressure P
Water, removes the cutting ring soil sample above tested infiltration soil sample, using varying head device to tested infiltration soil sample and filter after reaching requirement
Membranous system carries out osmotic coefficient investigating, measures soil sample height, sectional area, test temperature, the amount of seepage of corresponding time, according to reaching
Western law calculates the infiltration coefficient of infiltration soil sample.
Table 1
Those skilled in the art of the present technique are appreciated that unless otherwise defined all terms used herein are (including technology art
Language and scientific terminology) have with the application art in those of ordinary skill general understanding identical meaning.Should also
It is understood by, those terms defined in such as general dictionary should be understood that the meaning having with the context of prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or excessively formal implication is explaining.
The implication of "and/or" described herein refers to the simultaneous situation of respective individualism or both and wraps
Including including.
It can also pass through between part that the implication of " connection " described herein can be being directly connected between part
Other parts are indirectly connected with.
With above-mentioned according to desirable embodiment of the present utility model as enlightenment, by above-mentioned description, related work people
Member can carry out various change and modification completely in the range of without departing from this utility model technological thought.This reality
The content being not limited to new technical scope on specification, it is necessary to determine its technology according to right
Property scope.
Claims (6)
1. a kind of it is contemplated that sticking grain silting soil body osmotic coefficient measurement apparatus, it is characterised in that：Described soil body osmotic coefficient
Measurement apparatus include bucket, permeameter, collection bottle and vavuum pump, are provided with gas outlet and delivery port on the base of permeameter,
Gas outlet is clamped using tongs, and one end of collection bottle is connected with the delivery port of permeameter, and its other end is connected with vavuum pump
Logical；Described permeameter is placed in bucket, constitutes soil sample chamber by base, permeable stone and filter membrane, for putting in described permeameter
Tested infiltration soil sample is put, and wherein, permeable stone is placed in base centre position, and filter membrane is covered with above permeable stone；Tested infiltration soil sample table
Face is provided with the cutting ring of same inner diameter sectional area, is laid with cutting ring soil sample in cutting ring.
2. according to claim 1 it is contemplated that sticking grain silting soil body osmotic coefficient measurement apparatus, it is characterised in that：Cutting ring
Soil sample is placed in cutting ring, and its surface is fixed by rubber membrane, and is coated with waterproof sealing cream between cutting ring soil sample and cutting ring.
3. according to claim 1 it is contemplated that sticking grain silting soil body osmotic coefficient measurement apparatus, it is characterised in that：In collection
Vacuum meter is installed, for monitoring collection bottle internal pressure on water bottle.
4. according to claim 1 it is contemplated that sticking grain silting soil body osmotic coefficient measurement apparatus, it is characterised in that：Catchment
One end of bottle is connected by PU tracheaes with the delivery port of permeameter, and its other end is connected with vavuum pump again by PU tracheaes
Logical, wherein, on the PU tracheaes that collection bottle is connected with vavuum pump, it is provided with regulating bolt.
5. according to claim 4 it is contemplated that sticking grain silting soil body osmotic coefficient measurement apparatus, it is characterised in that：Described
PU tracheaes external diameter be 8mm, internal diameter is 6mm.
6. according to claim 1 it is contemplated that sticking grain silting soil body osmotic coefficient measurement apparatus, it is characterised in that：Described
Cutting ring internal diameter sectional area be 30.08 cm2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621051345.0U CN206020233U (en) | 2016-09-12 | 2016-09-12 | A kind of soil body osmotic coefficient measurement apparatus for being contemplated that sticking grain silting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621051345.0U CN206020233U (en) | 2016-09-12 | 2016-09-12 | A kind of soil body osmotic coefficient measurement apparatus for being contemplated that sticking grain silting |
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| CN206020233U true CN206020233U (en) | 2017-03-15 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101908A (en) * | 2017-03-22 | 2017-08-29 | 吉林大学 | A kind of capillary water negative pressure Quick testing instrument and its method of work |
| CN107703038A (en) * | 2017-09-19 | 2018-02-16 | 中交天津港湾工程研究院有限公司 | Geotextile is compressed axially method clogging test device and method |
| CN108226008A (en) * | 2018-01-18 | 2018-06-29 | 西安理工大学 | Self-loopa varying head darcy permeability test instrument |
| CN111829933A (en) * | 2020-07-21 | 2020-10-27 | 中国矿业大学 | Fracture network shear seepage test device and test method thereof |
| CN114295468A (en) * | 2022-01-07 | 2022-04-08 | 中国石油大学(华东) | Variable-head soft clay consolidation model test box and use method thereof |
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2016
- 2016-09-12 CN CN201621051345.0U patent/CN206020233U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107101908A (en) * | 2017-03-22 | 2017-08-29 | 吉林大学 | A kind of capillary water negative pressure Quick testing instrument and its method of work |
| CN107703038A (en) * | 2017-09-19 | 2018-02-16 | 中交天津港湾工程研究院有限公司 | Geotextile is compressed axially method clogging test device and method |
| CN108226008A (en) * | 2018-01-18 | 2018-06-29 | 西安理工大学 | Self-loopa varying head darcy permeability test instrument |
| CN108226008B (en) * | 2018-01-18 | 2020-12-18 | 西安理工大学 | Self-circulation variable water head Darcy infiltration experimental instrument |
| CN111829933A (en) * | 2020-07-21 | 2020-10-27 | 中国矿业大学 | Fracture network shear seepage test device and test method thereof |
| CN111829933B (en) * | 2020-07-21 | 2021-03-05 | 中国矿业大学 | Fracture network shear seepage test device and test method thereof |
| CN114295468A (en) * | 2022-01-07 | 2022-04-08 | 中国石油大学(华东) | Variable-head soft clay consolidation model test box and use method thereof |
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