CN106918485A - A kind of specified moisture content hollow cylinder bentonite sample preparation device and method - Google Patents
A kind of specified moisture content hollow cylinder bentonite sample preparation device and method Download PDFInfo
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- CN106918485A CN106918485A CN201710220620.XA CN201710220620A CN106918485A CN 106918485 A CN106918485 A CN 106918485A CN 201710220620 A CN201710220620 A CN 201710220620A CN 106918485 A CN106918485 A CN 106918485A
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- hollow cylinder
- base
- mould
- soil sample
- bentonite
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- 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
-
- 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
-
- 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
- G01N1/36—Embedding or analogous mounting of samples
-
- 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
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
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- 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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of preparation facilities of hollow cylinder swelling soil sample, including mould and pressure head that base and base with mandrel link into an integrated entity, the inner chamber of mould is cylinder, pressure head is cylinder with the profile of mould inner chamber mating part, and the lower inner of pressure head has the cavity being adapted with mandrel.The present invention can be obtained the specified moisture content hollow cylinder swelling soil sample for tallying with the actual situation, can be provided safeguard to determine bentonitic properties under accurate simulation true environment, and preparation facilities simple structure, low cost, preparation method is easy to operate, and high in machining efficiency, quality is good.
Description
Technical field
The present invention relates to a kind of preparation facilities of swelling soil sample, especially a kind of specified moisture content hollow cylinder swelling
Soil sample preparation facilities and method.
Background technology
High radioactivity waste material (high-level waste) deep geologic disposal storehouse typically uses multibarrier system, including wall rock geology
Barrier, based on bentonitic engineering barrier and waste storage container barrier etc., wherein as buffering backfilling material bentonite set
Put between country rock and waste canister, used as buffering backfilling material, it must have water-swellable, self-enclosed property, hypotonicity
With the performance such as nucleic absorption because bentonite possesses any of the above characteristic, it is general from bentonite as buffering backfilling material.
Bentonite is between country rock and waste canister, with the seepage flow of underground water, bentonite as buffering backfilling material
Water swelling can play a part of crack in sealing container and country rock, while with the decay of high-level waste, in waste canister
Temperature can rise, it is therefore desirable to study bentonitic hot water force coupling effect.
Bentonite is typically processed to block and is placed in waste storage tank and country rock, and overall is in hollow cylinder, but, mesh
The preceding compacting sample for preparing different original water content and dry densities has two：
1) specified moisture content is prepared often by directly water is mixed with bentonite, prepares snowflake ice crystal and swelling
Soil mixing and the method such as Direct spraying, but these methods are difficult to be well mixed, and often local absorption, easily forms pimple.
2) it is that bentonite is processed into solid cylinder to be studied, and for being processed into hollow cylinder sample, often
Be by the way of directly using center from plane pressure head to solid cylinder press, the sample for so manufacturing it is hollow in
Surface is more coarse, and plane pressure head is difficult centering, and the hollow cylinder hole perpendicularity of formation is poor, or even in plane pressure head pressure
During destroy sample etc., it is difficult to produce preferable test sample.
The content of the invention
In order to overcome the above-mentioned deficiency of prior art, the present invention to provide a kind of specified moisture content hollow cylinder bentonite examination
Sample preparation facilities and method, can be obtained the specified moisture content hollow cylinder swelling soil sample for tallying with the actual situation, and can be defined
Really bentonitic properties are determined under simulation true environment to provide safeguard, and preparation facilities simple structure, low cost, preparation side
Method is easy to operate, and high in machining efficiency, quality is good.
The present invention solve its technical problem use technical scheme be：
A kind of preparation facilities of hollow cylinder swelling soil sample, including base and base with mandrel connect into one
The mould and pressure head of body, the inner chamber of mould are the profile of cylinder, pressure head and mould inner chamber mating part
It is cylinder, the lower inner of pressure head has the cavity being adapted with mandrel.
A kind of side that specified moisture content hollow cylinder swelling soil sample is prepared using preparation facilities as claimed in claim 1
Method, comprises the following steps：First, it is the bentonitic maintenance of specified moisture content：The bentonite of certain mass is placed on DIFFERENT WET
Conserved under degree environment, treated after steady quality, it is m to take wherein quality1Bentonite drying, survey its drying after quality m2, calculate
Its water content w,
Afterwards, the dry density ρ according to sample to be preparedd, height h and diameter D：The amount of soil needed for calculating,
Finally, the soil amount that will be calculated is placed in the preparation facilities of hollow cylinder swelling soil sample described in claim 1, is led to
Pressure head is crossed by sample compacting certain height h, you can the hollow cylinder swelling soil sample of the specified moisture content that will be prepared takes out.
Compared to existing technology, a kind of specified moisture content hollow cylinder bentonite sample preparation device of the invention and side
Method, specified moisture content bentonite is obtained by measuring, then the soil amount that will be calculated is put into the system of hollow cylinder swelling soil sample
In standby device, sample is suppressed by certain height h by pressure head, so that it may prepare the hollow cylinder sample of specified moisture content, this
The swelling soil sample of sample just closest to truth, and then beneficial to determining bentonitic items under accurate simulation true environment
Can, and the preparation method is easy to operate, and high in machining efficiency, quality is good, and the preparation facilities bag of hollow cylinder swelling soil sample
Mould and pressure head that base and base with mandrel link into an integrated entity are included, the inner chamber of mould is cylinder, pressure
Head is cylinder with the profile of mould inner chamber mating part, and the lower inner of pressure head has the cavity being adapted with mandrel,
Only need to insert bentonite the inner chamber of mould, reuse pressure head compacting, the simple structure of preparation facilities is fabricated to
This is low, and operation is simple.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the preparation facilities of one embodiment of the invention hollow cylinder swelling soil sample.
Fig. 2 is the structural representation of one embodiment of the invention pressure head.
Fig. 3 is the sectional view of one embodiment of the invention base.
Fig. 4 is one embodiment of the invention base vertical view.
Fig. 5 is the sectional view of one embodiment of the invention mould.
Fig. 6 is the sectional view of one embodiment of the invention mould.
In figure, 1, pressure head, 1-1, cavity, 2, mould, 2-1, inner chamber, 3, mandrel, 4, bentonite, 5, base, 5-1,
Groove, 5-2, mounting hole, 6, bolt.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to protection scope of the present invention.
Fig. 1 to Fig. 6 shows a structural representation for preferred embodiment of the invention, a kind of hollow cylinder in figure
The preparation facilities of swelling soil sample, including the mould and pressure head that base and base with mandrel link into an integrated entity；Ginseng
See Fig. 5 and Fig. 6, the inner chamber of mould is cylinder, and the profile of mould is also circle in the embodiment, but is not limited to
This；Referring to Fig. 2, as long as it is cylinder that pressure head meets it with the profile of mould inner chamber mating part, not with shaping mould
The shape that the inner chamber of tool forms the position for coordinating can be arbitrary conventional shape, and the lower inner of pressure head has mutually fits with mandrel
The cavity matched somebody with somebody, the length of pressure head inner chamber body is engaged with the length of mandrel, and specific size can according to actual needs be selected and set.Use
When, the bentonite of specified moisture content is inserted the inner chamber of mould, reuse pressure head compacting and can be prepared by specified moisture content
Hollow cylinder swelling soil sample.
The bottom of the mandrel of the invention is fastened on base by detachable or non-removable mode
Centre, or the bottom of mandrel is integrally formed the centre for being connected to base；For example, the bottom of the mandrel leads to
Cross bolt or be weldingly fixed on the centre of base.And the bottom of the mould and base are by dismountable mode
Connection, wherein the connection dismantled can be by other connected modes such as groove clamping or threaded connection.
In the present embodiment, referring to Fig. 3 and Fig. 4, mounting hole can be opened up in the center of base, for using bolt
Mandrel is connected with base.Circular groove is set in base upper surface, the bottom of mould is at circular groove and base
Clamping；Referring to Fig. 5 and Fig. 6, at this moment, the profile of mould is circle, is, in order to coordinate the circular groove on base, but not limit
In this, the profile of mould can be arbitrary shape, it is only necessary to which the groove for connecting opened up on base has and shaping
The consistent shape of die shape is to be capable of achieving clamping.
A kind of method for preparing specified moisture content hollow cylinder swelling soil sample, comprises the following steps：
1) first, it is the bentonitic maintenance of specified moisture content：
The bentonite of certain mass is placed under different humidity environment and is conserved, the process of maintenance is：Configuration saturated salt is molten
Liquid, is placed in hermetically sealed can and forms fixed relative humidity, and such as 75% humidity environment, 85% humidity environment put bentonite
Put in hermetically sealed can, bentonite is hanging in hermetically sealed can, does not steep in salting liquid, different moisture content is formed after bentonite water suction
Bentonite clay particle, treats after steady quality, it is m to take wherein quality1Bentonite drying, determine drying after quality m2, calculate it
Water content w,
2) after, the dry density ρ according to sample to be preparedd, height h and diameter D, calculate needed for soil amount,
3) the soil amount that will be calculated is placed in the preparation facilities of hollow cylinder swelling soil sample described in claim 1,
Sample is suppressed by certain height h by pressure head, lower bottom base is unloaded, pressure head is pressed, you can will prepare specified moisture content from bottom
Hollow cylinder swelling soil sample take out, obtain finished product.
The above, is only presently preferred embodiments of the present invention, not does any formal limitation to the present invention, it is every according to
According to technical spirit of the invention, any simple modification and equal change are made to above example, each fall within guarantor of the invention
Within the scope of shield.
Claims (7)
1. a kind of preparation facilities of hollow cylinder swelling soil sample, it is characterized in that：Connect including the base with mandrel and base
The mould and pressure head of one are connected into, the inner chamber of mould is cylinder, pressure head and mould inner chamber mating part
Profile be cylinder, the lower inner of pressure head has the cavity being adapted with mandrel.
2. the preparation facilities of a kind of hollow cylinder swelling soil sample according to claim 1, it is characterized in that：The mandrel
Bottom be fastened on the centre of base by detachable or non-removable mode, or mandrel bottom
It is integrally formed the centre for being connected to base.
3. the preparation facilities of a kind of hollow cylinder swelling soil sample according to claim 2, it is characterized in that：The mandrel
Bottom is by bolt or is weldingly fixed on the centre of base.
4. the preparation facilities of a kind of hollow cylinder swelling soil sample according to claim 1 or 2 or 3, it is characterized in that：Institute
The bottom for stating mould is connected with base by dismountable mode.
5. the preparation facilities of a kind of hollow cylinder swelling soil sample according to claim 4, it is characterized in that：The shaping
The bottom of mould and base clamping, the groove consistent with mould bottom profile is provided with the upper surface of base, is molded
Mould is fastened in the groove of base.
6. a kind of use preparation facilities as claimed in claim 1 prepares the side of specified moisture content hollow cylinder swelling soil sample
Method, it is characterized in that：Comprise the following steps：
1) first, it is the bentonitic maintenance of specified moisture content：
First, the bentonite of certain mass is placed under different humidity environment and is conserved, after after steady quality, can use a certain amount of
It is m that soil surveys its quality1, afterwards, it is dried at 105 DEG C, determine its quality m2, its water content w is calculated,
2) after, the dry density ρ according to sample to be preparedd, height h and diameter D, calculate needed for soil amount,
3) the soil amount that will be calculated is placed in the preparation facilities of hollow cylinder swelling soil sample described in claim 1, is passed through
Sample is suppressed certain height h by pressure head, that is, prepare the hollow cylinder swelling soil sample of specified moisture content.
7. one kind according to claim 6 prepares specified moisture content sky using hollow cylinder bentonite sample preparation device
The method of heart cylinder swelling soil sample, it is characterized in that：The bentonite is placed on the process conserved under different humidity environment：
Configuration saturated salt solution, is placed in hermetically sealed can and forms fixed relative humidity, and bentonite is placed in hermetically sealed can and at it
In it is hanging, the bentonite clay particle of different moisture content is formed after bentonite water suction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710220620.XA CN106918485A (en) | 2017-04-06 | 2017-04-06 | A kind of specified moisture content hollow cylinder bentonite sample preparation device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710220620.XA CN106918485A (en) | 2017-04-06 | 2017-04-06 | A kind of specified moisture content hollow cylinder bentonite sample preparation device and method |
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| CN106918485A true CN106918485A (en) | 2017-07-04 |
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| CN201710220620.XA Pending CN106918485A (en) | 2017-04-06 | 2017-04-06 | A kind of specified moisture content hollow cylinder bentonite sample preparation device and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727477A (en) * | 2017-11-13 | 2018-02-23 | 宁波工程学院 | A kind of hollow cylinder compacted soil samples saturation device |
| CN107796679A (en) * | 2017-12-06 | 2018-03-13 | 山东科技大学 | Non-standard coal or non-standard rock sample preparation method based on analog material |
| CN108164223A (en) * | 2018-02-05 | 2018-06-15 | 中煤科工集团重庆研究院有限公司 | Protruding coal-like material with weak impact tendency and preparation method thereof |
| CN111855339A (en) * | 2019-04-29 | 2020-10-30 | 中国石油化工股份有限公司 | Frozen soil rock core preparation device and method |
| CN112729985A (en) * | 2020-12-24 | 2021-04-30 | 上海交通大学 | Device for preparing soil sample through layering compaction |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107727477A (en) * | 2017-11-13 | 2018-02-23 | 宁波工程学院 | A kind of hollow cylinder compacted soil samples saturation device |
| CN107796679A (en) * | 2017-12-06 | 2018-03-13 | 山东科技大学 | Non-standard coal or non-standard rock sample preparation method based on analog material |
| CN107796679B (en) * | 2017-12-06 | 2018-09-07 | 山东科技大学 | Non-standard coal based on analog material or non-standard rock sample production method |
| CN108164223A (en) * | 2018-02-05 | 2018-06-15 | 中煤科工集团重庆研究院有限公司 | Protruding coal-like material with weak impact tendency and preparation method thereof |
| CN108164223B (en) * | 2018-02-05 | 2020-09-22 | 中煤科工集团重庆研究院有限公司 | Protruding coal-like material with weak impact tendency and preparation method thereof |
| CN111855339A (en) * | 2019-04-29 | 2020-10-30 | 中国石油化工股份有限公司 | Frozen soil rock core preparation device and method |
| CN112729985A (en) * | 2020-12-24 | 2021-04-30 | 上海交通大学 | Device for preparing soil sample through layering compaction |
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Address after: 221116 No. 1 University Road, copper mountain, Jiangsu, Xuzhou Applicant after: China University of Mining & Technology Address before: 221116 Xuzhou University Road,, Jiangsu, China University of Mining and Technology Applicant before: China University of Mining & Technology |
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Application publication date: 20170704 |