CN105675844A - Measurement device and method for frozen swell and melt settlement amount of loess sample - Google Patents
Measurement device and method for frozen swell and melt settlement amount of loess sample Download PDFInfo
- Publication number
- CN105675844A CN105675844A CN201610194200.4A CN201610194200A CN105675844A CN 105675844 A CN105675844 A CN 105675844A CN 201610194200 A CN201610194200 A CN 201610194200A CN 105675844 A CN105675844 A CN 105675844A
- Authority
- CN
- China
- Prior art keywords
- settlement amount
- measurement device
- endless knife
- top cover
- melt settlement
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/30—Measuring arrangements characterised by the use of mechanical techniques for measuring the deformation in a solid, e.g. mechanical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- 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
-
- 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
- G01N25/14—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
Abstract
The invention discloses a measurement device and a measurement method for a frozen swell and melt settlement amount of a loess sample, and relates to the field of loess sample preparation and deformation testers. The measurement device comprises a base, wherein the base is fixedly connected with a hollow column; an annular cutter is arranged in the hollow column; the top of the hollow column is connected with a top cover; the periphery of the top cover is connected with a top ring in a sleeving manner; a plurality of vertical columns are fixed between the top ring and the base and are uniformly distributed around the periphery of the hollow column; a vertical supporting column is arranged on the base and is movably connected with one end of a horizontal clamp; the horizontal clamp is movably connected with a measurement rod of a dial indicator; the dial indicator is arranged above the top cover. The device for measuring the frozen swell and melt settlement amount is simple in structure, convenient to operate and high in measurement precision, and meets the requirements on frozen swell and melt settlement of the loess sample.
Description
Technical field
The present invention relates to soil sample to produce and deformation test instrument field, relate to the measurement device and method of a kind of loess sample frozen swell and melt settlement amount more specifically.
Background technology
For a long time, frost-heaving and thawing is the one of the main reasons of northwest cold regions engineering freeze injury problem. Freeze-thaw cycle destroys the connection between soil particle, and soil particle is rearranged, the disease such as after causing Frozen Area loess subgrade to be runed several years, a large amount of non-uniform settlings occurs, subside, and seriously have impact on the safe operation of job facilities. Therefore, to the understanding of the cubic deformation rule of the soil body under freeze-thaw cycle effect and after freeze-thaw cycle effect the research of this soil sample mechanical property very necessary. At present both at home and abroad also comparatively unripe being used for is measured the testing apparatus of the swell-shrinking deformation rule of the soil body and produces the instrument of original state triaxial test soil sample.
Summary of the invention
The present invention provides the measurement device and method of a kind of loess sample frozen swell and melt settlement amount, carries out producing and the accurate measurement of soil body frozen swell and melt settlement amount under freeze-thaw cycle effect of three axle original state soil samples.
The present invention provides the measurement device of a kind of loess sample frozen swell and melt settlement amount, comprising:
Base, base is fixedly connected with open tubular column, and open tubular column inside is provided with endless knife, and open tubular column top connects top cover, and socket top, top cover periphery ring, is also fixed with multiple column between top ring and base, and column is uniformly distributed around the periphery of open tubular column;
Also vertically being provided with pillar on base, pillar is connected with horizontal clamper, horizontal clamper is flexibly connected with the gauge rod of dial gauge, and dial gauge is placed in the top of top cover.
Preferably, endless knife is closed by two dismountable hollow semi-circular cutter buttons, and endless knife excircle head diameter is greater than tail diameter, and endless knife inner periphery head diameter is identical with tail diameter.
Preferably, it is fixed with Rubber shock-absorbing pad bottom base.
Preferably, being provided with permeable stone and film and film between the bottom of endless knife and base is placed on permeable stone; It is provided with permeable stone and film and permeable stone between the top of endless knife and top cover to be placed on film.
Preferably, endless knife excircle is provided with scale.
Preferably, sealing agent is used to seal between top cover and top ring.
Preferably, column is 4.
Preferably, open tubular column is adiabatic open tubular column.
A kind of soil sample frozen swell and melt settlement amount measurement method, comprises the following steps:
Use endless knife vertically to insert in soil, take out three axle original state soil samples, surface finish is smooth;
Endless knife with soil sample is vertically put into open tubular column, is placed on the endless knife of soil sample on permeable stone and film;
Placing film with in the endless knife of soil sample, film is being placed permeable stone;
Top cover, uses sealing agent to seal by between top cover and top ring;
By the gauge rod of mobile dial gauge, regulate the height of dial gauge so that the gauge rod of dial gauge contacts with top cover, and is made zero by dial gauge;
The measurement device installed is placed in temperature control refrigerator, regulates temperature, observe the reading of dial gauge, carry out the measurement of frost heaving amount;
It is placed in thermostat container by the measuring apparatus taking-up in temperature control refrigerator to carry out melting the heavy measurement measured.
Preferably, the temperature range of temperature control refrigerator is-40 DEG C to-10 DEG C, and temperature-controlled precision is 0.1 DEG C, and the temperature of thermostat container is 20 DEG C.
In the present invention, simple for measuring the apparatus structure of frozen swell and melt settlement amount, easy to operate, measuring accuracy height, meets the requirement of soil sample frost-heaving and thawing, temperature can accurately control, can directly observe the frozen swell and melt settlement amount of soil sample after each time period or freeze-thaw cycle, to soil sample without damage after experience freeze-thaw cycle, it is possible to meet the measurement of the frozen swell and melt settlement amount of various soil sample under freeze-thaw cycle effect, endless knife is convenient and swift for the extraction of three axle original state soil samples, and can ensure the integrity of soil sample.
Accompanying drawing explanation
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, it is briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the measurement device front elevational schematic of a kind of loess sample frozen swell and melt settlement amount provided by the invention;
Fig. 2 is the measurement device schematic top plan view of a kind of loess sample frozen swell and melt settlement amount provided by the invention;
Fig. 3 is the measurement device endless knife front view of a kind of loess sample frozen swell and melt settlement amount provided by the invention;
Fig. 4 is the measurement device endless knife vertical view of a kind of loess sample frozen swell and melt settlement amount provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing of the present invention, the technical scheme in the present invention is clearly and completely described, it is clear that described embodiment is only the present invention's part embodiment, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As depicted in figs. 1 and 2, the exemplary main schematic diagram of measurement device showing a kind of loess sample frozen swell and melt settlement amount provided by the invention and schematic diagram of bowing, this measurement device mainly comprises: base 11, base 11 is fixedly connected with open tubular column 8, open tubular column 8 inside is provided with endless knife 7, and open tubular column 8 top connects top cover 4, socket top, top cover 4 periphery ring 5, also it is fixed with 4 columns, 9,4 columns 9 between top ring 5 and base 11 to be uniformly distributed around the periphery of open tubular column 8;
Base 11 is also vertically provided with pillar 13, pillar 13 is connected with horizontal clamper 2, horizontal clamper 2 is two parallel clamping bar compositions, clamping bar two ends use trip bolt to connect respectively, horizontal clamper one end uses trip bolt to be connected with pillar 13, the other end is connected by trip bolt with the gauge rod of dial gauge 1, the gauge rod of dial gauge 1 can move up and down between clamping bar, after height control is good, the trip bolt of the clamping bar the other end being screwed the gauge rod to dial gauge 1 carries out fastening, and dial gauge 1 is placed in the top of top cover 4.
Wherein, as shown in Figure 3 and Figure 4, endless knife 7 is closed by two dismountable hollow semi-circular cutter buttons, the excircle head diameter of endless knife 7 is greater than tail diameter, inner periphery head diameter is identical with tail diameter, and the afterbody of endless knife 7 is sharp blade-like, it is possible in convenient insertion soil, excircle also can have scale, the convenient three axle original state soil samples taking out various thickness; Being provided with permeable stone and film and film between the bottom of endless knife 7 and base 11 is placed on permeable stone; Being provided with permeable stone and film and permeable stone between the top of endless knife 7 and top cover 4 is placed on film; Being fixed with Rubber shock-absorbing pad 12 bottom base 11, it is possible to ensure the accuracy measured, open tubular column 8 is adiabatic open tubular column, ensures that data are accurate when measuring.
During measurement, bottom base 11, fix Rubber shock-absorbing pad 12, installed pillar 13 and equally distributed 4 columns 9 on the pedestal 11, and fix top ring 5 at the top of 4 columns 9;
Open tubular column 8 is placed on the base 11 between 4 columns 9, places permeable stone 10 in the bottom of open tubular column 8, permeable stone 10 places plastics film;
Utilize in the knife edge part insertion soil body of endless knife 7 afterbody, take out the three axle original state soil samples 6 requiring height, soil sample 6 periphery is polished smooth;
Endless knife 7 with soil sample 6 is vertically put into open tubular column 8, endless knife 7 is placed on above plastics film;
Covering plastics film with endless knife 7 head of soil sample 6, placing permeable stone on a plastic film, the top that permeable stone fills height and the open tubular column 8 placed is put down together;
Top cover 4, uses Vaseline to seal by between top cover 4 and top ring 5, the moisture effusion of the inner soil body 6 of anti-locking apparatus, by the gauge rod of mobile dial gauge 1, regulate the height of dial gauge 1, the gauge rod of dial gauge 1 is contacted well with top cover 4, and the reading regulating dial gauge 1 is zero.
Freeze soil sample: be placed on by the whole device installed in temperature control refrigerator DW-FL362 cryogenic freezing refrigerator, regulating temperature required, carry out freezing test, the reading observing dial gauge 1 measures frost heaving amount, the temperature range of temperature control refrigerator is-40 DEG C to-10 DEG C, and temperature-controlled precision is 0.1 DEG C;
Melting soil sample: taken out by the whole device in temperature control refrigerator DW-FL362 cryogenic freezing refrigerator and put into 20 DEG C of thermostat containers, carry out melting test, the reading of observation dial gauge 1 measures and melts heavy amount;
Repeatedly regulate the temperature of temperature control refrigerator, carry out freeze-thaw cycle, to the frost heave of soil sample, melt heavy amount and measure.
Although having described the preferred embodiments of the present invention, but those skilled in the art once the substantially creative concept of cicada, then these embodiments can be made other change and amendment. Therefore, it is intended that the appended claims shall be construed comprise preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, the present invention can be carried out various change and modification and not depart from the spirit and scope of the present invention by the technician of this area. Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these change and modification.
Claims (10)
1. the measurement device of a loess sample frozen swell and melt settlement amount, it is characterised in that, comprising:
Base (11), described base (11) is fixedly connected with open tubular column (8), described open tubular column (8) inside is provided with endless knife (7), described open tubular column (8) top connects top cover (4), described top cover (4) periphery socket top ring (5), also being fixed with multiple column (9) between described top ring (5) and base (11), described column (9) is uniformly distributed around the periphery of described open tubular column (8);
Described base (11) is also vertically provided with pillar (13), described pillar (13) is upper is flexibly connected horizontal clamper (2), described horizontal clamper (2) is flexibly connected with the gauge rod of dial gauge (1), and described dial gauge (1) is placed in the top of top cover (4).
2. the measurement device of a kind of loess sample frozen swell and melt settlement amount according to claim 1, it is characterized in that, described endless knife (7) is closed by two dismountable hollow semi-circular cutter buttons, described endless knife (7) excircle head diameter is greater than tail diameter, and described endless knife (7) inner periphery head diameter is identical with tail diameter.
3. the measurement device of a kind of loess sample frozen swell and melt settlement amount according to claim 1, it is characterised in that, described base (11) bottom is fixed with Rubber shock-absorbing pad (12).
4. the measurement device of a kind of loess sample frozen swell and melt settlement amount according to claim 1, it is characterised in that, it is provided with permeable stone and film and film between described endless knife (7) and base (11) and it is placed on permeable stone; It is provided with permeable stone and film and permeable stone between described endless knife (7) and top cover (4) to be placed on film.
5. the measurement device of a kind of loess sample frozen swell and melt settlement amount according to claim 4, it is characterised in that, described endless knife (7) excircle is provided with scale.
6. the measurement device of a kind of loess sample frozen swell and melt settlement amount according to claim 1, it is characterised in that, use sealing agent to seal between described top cover (4) and top ring (5).
7. the measurement device of a kind of loess sample frozen swell and melt settlement amount according to claim 1, it is characterised in that, described column (9) is 4.
8. the measurement device of a kind of loess sample frozen swell and melt settlement amount according to claim 1, it is characterised in that, described open tubular column (8) is adiabatic open tubular column.
9. one kind uses the soil sample frozen swell and melt settlement amount measurement method of the device of any claim 1-8, it is characterised in that, comprise the following steps:
Use endless knife (7) vertically to insert in soil, take out three axle original state soil samples, by smooth for soil sample surface finish;
Endless knife (7) with soil sample is vertically put into open tubular column (8), is placed on permeable stone and film with the endless knife (7) of soil sample;
Placing film with in the endless knife (7) of soil sample, film is placed permeable stone;
Top cover (4), uses sealing agent to seal by between top cover (4) and top ring (5);
By the gauge rod of mobile dial gauge (1), regulate the height of dial gauge (1) so that the gauge rod of dial gauge (1) contacts with top cover (4), and is made zero by dial gauge (1);
The measurement device installed is placed in temperature control refrigerator, regulates temperature, observe the reading of dial gauge (1), carry out the measurement of frost heaving amount;
It is placed in thermostat container by the measuring apparatus taking-up in temperature control refrigerator to carry out melting the heavy measurement measured.
10. the method for measurement of a kind of soil sample frozen swell and melt settlement amount according to claim 9, it is characterised in that, the temperature range of described temperature control refrigerator is-40 DEG C to-10 DEG C, and described temperature-controlled precision is 0.1 DEG C, and the temperature of described thermostat container is 20 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194200.4A CN105675844A (en) | 2016-03-26 | 2016-03-26 | Measurement device and method for frozen swell and melt settlement amount of loess sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610194200.4A CN105675844A (en) | 2016-03-26 | 2016-03-26 | Measurement device and method for frozen swell and melt settlement amount of loess sample |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105675844A true CN105675844A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610194200.4A Pending CN105675844A (en) | 2016-03-26 | 2016-03-26 | Measurement device and method for frozen swell and melt settlement amount of loess sample |
Country Status (1)
| Country | Link |
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| CN (1) | CN105675844A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738478A (en) * | 2019-01-18 | 2019-05-10 | 绍兴文理学院元培学院 | A kind of high-precision body frost heaving process automation monitoring system |
| CN113390784A (en) * | 2021-06-24 | 2021-09-14 | 深圳市市政工程总公司 | Shrinkage performance detection method for slag soil fluidized backfill material |
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| CN201352186Y (en) * | 2008-12-31 | 2009-11-25 | 北京林业大学 | Undisturbed soil sampling device |
| CN201508358U (en) * | 2009-09-23 | 2010-06-16 | 交通部公路科学研究所 | Early expansion and contraction tester of concrete road slab bottom grouting material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109738478A (en) * | 2019-01-18 | 2019-05-10 | 绍兴文理学院元培学院 | A kind of high-precision body frost heaving process automation monitoring system |
| CN113390784A (en) * | 2021-06-24 | 2021-09-14 | 深圳市市政工程总公司 | Shrinkage performance detection method for slag soil fluidized backfill material |
| CN113390784B (en) * | 2021-06-24 | 2023-08-18 | 深圳市市政工程总公司 | Method for detecting shrinkage performance of slag soil fluidization backfill material |
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Application publication date: 20160615 |