CN106932554A - A kind of soil body is disintegrated critical moisture content method of testing and disintegration tester - Google Patents
A kind of soil body is disintegrated critical moisture content method of testing and disintegration tester Download PDFInfo
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- CN106932554A CN106932554A CN201710142024.4A CN201710142024A CN106932554A CN 106932554 A CN106932554 A CN 106932554A CN 201710142024 A CN201710142024 A CN 201710142024A CN 106932554 A CN106932554 A CN 106932554A
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Abstract
The invention discloses a kind of soil body disintegration critical moisture content method of testing and disintegration tester, the method is first to make some groups of soil sample；Then to water is filled in container, the initial pressure value P of water is measured01；Test the moisture content W of one of which soil sample1；It is W by moisture content1Soil sample be put on web plate and water filling, until flooding completely, read the pressure value P of soil samplec1；When soil sample is disintegrated completely, pressure inductor pressure value P is readz1；P01、Pc1And Pz1By formulaObtain disintegration amount B1；Repeat the above steps, B W curves are drawn with this some groups of data, take two moisture content W of critical 0 position of disintegration amount in curveiAnd Wi+1, and median is taken, as soil body disintegration critical moisture content Wc.The present invention proposes a kind of new soil body disintegration critical moisture content method of testing and disintegration tester, compensate for the missing that the current soil body is disintegrated critical value water cut test method, meanwhile, the disintegration tester that the present invention is provided can automation collection data, it is convenient to read, and is easy to carry.
Description
Technical field
The present invention relates to the method for testing and disintegration tester of a kind of soil body disintegrative, particularly a kind of soil body disintegration is critical aqueous
Rate method of testing and disintegration tester.
Background technology
Soil body disintegration critical moisture content disintegration tester is mainly the critical moisture content of test soil body humidifying disintegration in water.When
Before, the characteristic of soil body disintegration by soil body humidifying instrument experimental test (water breakthrough profit engineering geotechnique test specification SL237-008-1999,
Railway engineering soil test specification TB10102-2004).But soil body humidifying instrument mainly tests the disintegration amount of the soil body, fail to test it
The soil body is disintegrated critical moisture content.In order to test its soil body disintegration critical moisture content, exploitation soil body disintegration critical moisture content test side
Method and disintegration tester.
The content of the invention
It is an object of the present invention to provide a kind of soil body disintegration critical moisture content method of testing and disintegration tester.The present invention is carried
Go out a kind of new soil body disintegration critical moisture content method of testing and disintegration tester, compensate for current soil body disintegration critical value moisture content
The missing of method of testing, meanwhile, the disintegration tester that the present invention is provided can automation collection data, it is convenient to read, and is easy to carry.
Technical scheme：A kind of soil body is disintegrated critical moisture content method of testing, comprises the following steps：
(1) some groups of the soil sample of different water cut is made；
(2) to water filling in container, web plate was totally submerged, initial pressure value P was measured by pressure inductor01, Ran Houfang
Water in dry container；
(3) by one of which soil sample insertion soil body moisture pickup probe obtained in step (1), the moisture content of soil sample is tested
It is W1；
(4) it is W by step (3) moisture content1Soil sample, be put on container web plate, to water filling in container, until flooding completely
Soil sample, now reads the pressure value P of soil samplec1；
(5) after soil sample is disintegrated completely or by after 48 hours, terminating test, pressure inductor pressure value P is readz1；
(6) P in step (2), (4) and (5)01、Pc1And Pz1By formulaObtain disintegration amount B1；
(7) repeat the above steps, other group of the moisture content W and disintegration amount B of soil sample are tested successively, and with this some groups of data
B-W curves are drawn, two moisture content W of critical 0 position of disintegration amount in curve are takeniAnd Wi+1, and take the centre of the two moisture content
Value, as soil body disintegration critical moisture content Wc。
Foregoing soil body disintegration critical moisture content method of testing, the preparation method of soil sample is in the step (1)：
(1) some groups of the soil sample of the same area is taken, its moisture content W is testedt, a small amount of water then is sprayed on every group of soil sample surface,
Until after surface wettability does not absorb water, soil sample is completely sunk in the water 24 hours, its saturated aqueous rate W is then testedb；
(2) and then by part soil sample in step (1) dry, and with WtBased on, moisture content interval 2-3% is prepared, it is aqueous
It is 0-W that rate is intervaltSoil sample n groups, n >=2；
(3) and then in another part soil sample in step (1) spray water, and with WtBased on, prepare moisture content interval 2-
3%, it is W that moisture content is intervalt-WbSoil sample m groups, m >=2.
Foregoing soil body disintegration critical moisture content method of testing, the soil sample is made using undisturbed soil sample.
Foregoing soil body disintegration critical moisture content method of testing, in the step (1) and step (3), soil sample surface uses
Repeatedly a small amount of mode is sprayed water.
Foregoing soil body disintegration critical moisture content method of testing, in the step (2), soil sample uses natural air drying or low temperature
The mode of drying is dried.
The disintegration tester that a kind of foregoing soil body disintegration critical moisture content method of testing is used, includes container, is set on container
There is soil body moisture pickup probe, container side is provided with water inlet pipe, and container top center is provided with pressure inductor, pressure inductor
On be connected with transmission rod, transmission rod is stretched into container straight down, and is connected with web plate in bottom；Pressure inductor and soil mass water
Pickup probe is divided to be electrically connected with computer.
Foregoing soil body disintegration critical moisture content disintegration tester, the side of the container is additionally provided with drainpipe, and drainpipe is located at
Between web plate and pressure inductor.
Foregoing soil body disintegration critical moisture content disintegration tester, the container is provided with battery, battery and the pressure
Inductor and computer are electrically connected with.
Foregoing soil body disintegration critical moisture content disintegration tester, the container is provided with display, display and the electric power storage
Pond and computer are electrically connected with.
Beneficial effects of the present invention：
1st, method of testing of the invention solves soil test specification (GB/T50123-1999), hydraulic engineering soil test
It is critical without test soil body disintegration in specification (SL237-008-1999) and railway engineering soil test specification (TB10102-2004)
The defect of water cut test method.
2nd, disintegration tester of the invention on container by setting pressure inductor, and connects web plate, soil sample by transmission rod
After being placed on web plate, the pressure after its humidifying constantly passes to computer by pressure inductor, calculates disintegration rate and collapses
Xie Liang, compared with traditional approach, gathered data of the present invention is more automated, and number goes to read and also more facilitates.
3rd, disintegration tester of the invention can avoid water by setting drainpipe on the container between web plate and pressure inductor
The too high immersion pressure inductor original paper in position, it is ensured that reliability and security that equipment is used.
4th, disintegration tester of the invention makes the present invention remain able to work in the wild by setting battery on container.
5th, by setting display, the result that directly can be calculated computer is by numeral and icon for disintegration tester of the invention
It has been shown that, using more convenient.
To prove beneficial effects of the present invention, applicant has done following experiment：
Applicant takes Guangxi Wuxuan red clay, and 5 groups of soil samples are prepared for according to method for making sample of the invention, and by soil sample successively
Every group of disintegration critical moisture content of soil sample is tested according to method of testing of the invention, test result is as shown in table 1.
The critical disintegration moisture content of Guangxi Wuxuan admaic earth of table 1
Brief description of the drawings
Accompanying drawing 1 is the structural representation of disintegration tester of the present invention；
Description of reference numerals：1- containers, 2- water inlet pipes, 3- pressure inductors, 4- transmission rods, 5- web plates, 6- computers, 7-
Display, 8- drainpipes, 9- batteries, 10- soil body moisture pickup probes.
Specific embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples, but be not intended as to the present invention limitation according to
According to.
Embodiments of the invention：
Embodiment 1, a kind of soil body disintegration critical moisture content method of testing, comprise the following steps：
(1) take the same area undisturbed soil sample (undisturbed soil sample also known as undisturbed sample, the relative natural structure and natural of keeping
The soil sample of moisture content.Physics, mechanical property for determining natural earth, such as severe, natural moisture content, infiltration coefficient, compression system
Number and shearing strength etc.) 4 groups, test its moisture content Wt, then spray a small amount of by the way of repeatedly a small amount of on every group of soil sample surface
Water, until after surface wettability does not absorb water, soil sample is completely sunk in the water 24 hours, then tests its saturated aqueous rate Wb；
(2) and then by part soil sample in step (1) dried by the way of natural air drying or low temperature drying, and with Wt
Based on, moisture content interval 2-3% is prepared, it is 0-W that moisture content is intervalt2 groups of soil sample；
(3) and then in another part soil sample in step (1) sprayed water in a small amount of multiple mode, and with WtIt is base
Plinth, prepares moisture content interval 2-3%, and it is W that moisture content is intervalt-Wb2 groups of soil sample, then soil sample is sorted successively according to moisture content
1、2、3、4；
(4) to water filling in container 1, until water was totally submerged web plate 5, initial pressure value is measured by pressure inductor 3
P01, then it is allowed to dry the water in container 1；
(5) by the soil sample insertion soil body moisture pickup probe 10 of numbering 1, the moisture content W of soil sample 1 is measured1；
(6) and then the soil sample 1 of moisture content will be tested it is put on the web plate 5 in container 1, water filling in container 1 is thought, until complete
Total flooding soil sample 1, the pressure value P of soil sample on web plate 5 is measured by pressure inductor 3c1；
(7) when soil sample is disintegrated completely or is not disintegrated also later more than 48 hours, terminate test, read pressure value Pz1；
(8) soil sample 1 passes throughObtain disintegration amount B1；
(9) repeat the above steps, the moisture content W and disintegration amount B of soil sample 2,3,4 are tested successively, and with this some groups of data
B-W curves are drawn, two moisture content W of critical 0 position of disintegration amount in curve are takeniAnd Wi+1, and take the centre of the two moisture content
Value, the as soil body disintegration critical moisture content.
Embodiment 2, a kind of soil body disintegration critical moisture content method of testing, comprise the following steps：
(1) take the same area undisturbed soil sample (undisturbed soil sample also known as undisturbed sample, the relative natural structure and natural of keeping
The soil sample of moisture content.Physics, mechanical property for determining natural earth, such as severe, natural moisture content, infiltration coefficient, compression system
Number and shearing strength etc.) 10 groups, test its moisture content Wt, then spray a small amount of by the way of repeatedly a small amount of on every group of soil sample surface
Water, until after surface wettability does not absorb water, soil sample is completely sunk in the water 24 hours, then tests its saturated aqueous rate Wb；
(2) and then by part soil sample in step (1) dried by the way of natural air drying or low temperature drying, and with Wt
Based on, moisture content interval 2-3% is prepared, it is 0-W that moisture content is intervalt5 groups of soil sample；
(3) and then in another part soil sample in step (1) sprayed water in a small amount of multiple mode, and with WtIt is base
Plinth, prepares moisture content interval 2-3%, and it is W that moisture content is intervalt-Wb5 groups of soil sample, then soil sample is sorted successively according to moisture content
1、2、3、4、5、6、7、8、9、10；
(4) to water filling in container 1, until water was totally submerged web plate 5, initial pressure value is measured by pressure inductor 3
P01, then it is allowed to dry the water in container 1；
(5) by the soil sample insertion soil body moisture pickup probe 10 of numbering 1, the moisture content W of soil sample 1 is measured1；
(6) and then the soil sample 1 of moisture content will be tested it is put on the web plate 5 in container 1, water filling in container 1 is thought, until complete
Total flooding soil sample 1, the pressure value P of soil sample on web plate 5 is measured by pressure inductor 3c1；
(7) when soil sample is disintegrated completely or more than 48 hours after, termination test, read pressure value Pz1；
(8) soil sample 1 passes throughObtain disintegration amount B1；
(9) repeat the above steps, successively the moisture content W and disintegration amount B of test soil sample 2,3,4,5,6,7,8,9,10, and with
This some groups of data draw B-W curves, take two moisture content W of critical 0 position of disintegration amount in curveiAnd Wi+1, and take the two
The median of moisture content, the as soil body are disintegrated critical moisture content.
Embodiment 3, a kind of soil body disintegration critical moisture content disintegration tester for implementing the above method, as shown in Figure 1, include
Container 1, the top of container 1 is provided with soil body moisture pickup probe 10, and the side of container 1 is provided with water inlet pipe 2, at the top center of container 1
Pressure inductor 3 is provided with, transmission rod 4 is connected with pressure inductor 3, transmission rod 4 is stretched into container 1 straight down, and the bottom of at
End is connected with web plate 5；Pressure inductor 3 is electrically connected with computer 6.
The side of the container 1 is additionally provided with drainpipe 8, and drainpipe 8 is located between web plate 5 and pressure inductor 3.
The container 1 is provided with battery 9, and battery 9 is electrically connected with the pressure inductor 3 and computer 6.
The container 1 is provided with display 7, and display 7 is electrically connected with the battery 9 and computer 6.
Operation principle：Soil sample on web plate 5, by transmission rod 4, is connected on micro pressure inductor 3, reads pressure value
P, by battery 9 for equipment is powered, convenient scene carries；2) pressure value of the web plate 4 to micro pressure inductor 3 is read；3)
In the web plate 5 that soil sample is put into container 1, from the water filling of water inlet pipe 2 up to and drainpipe 8 overflow pipe maintain an equal level (prevent water from filling,
Immersion element), in soil sample is completely immersed in water body, read pressure value P c；4) when by after random time t, the disintegration of sample humidifying,
Soil sample weight is transferred to micro pressure inductor 3, the record t pressure of micro pressure inductor 3 by transmission rod 4 on web plate 5
Value；4) after sample is disintegrated completely or by (not being disintegrated completely) after 48 hours, termination test；5) micro pressure inductor 3
The pressure value of collection passes through the incoming data acquisition and analysis system of computer 6 of data wire (or being wirelessly transferred).
Claims (9)
1. a kind of soil body is disintegrated critical moisture content method of testing, it is characterised in that comprise the following steps：
(1) some groups of the soil sample of different water cut is made；
(2) to container (1) interior water filling, web plate (5) was totally submerged, initial pressure value P was measured by pressure inductor (3)01, so
The water in container (1) is allowed to dry afterwards；
(3) one of which soil sample obtained in step (1) is inserted in soil body moisture pickup probe (10), tests the moisture content of soil sample
It is W1；
(4) it is W by step (3) moisture content1Soil sample, be put on the web plate (5) in container (1), to water filling in container (1), until
Soil sample is flooded completely, now reads the pressure value P of soil samplec1；
(5) after soil sample is disintegrated completely or by after 48 hours, terminating test, pressure inductor (3) pressure value P is readz1；
(6) P in step (2), (4) and (5)01、Pc1And Pz1By formulaObtain disintegration amount B1；
(7) repeat the above steps, other group of the moisture content W and disintegration amount B of soil sample are tested successively, and draw with this some groups of data
B-W curves, take two moisture content W of critical 0 position of disintegration amount in curveiAnd Wi+1, and the median of the two moisture content is taken,
As soil body disintegration critical moisture content Wc。
2. the soil body according to claim 1 is disintegrated critical moisture content method of testing, it is characterised in that：In the step (1)
The preparation method of soil sample is：
(1) some groups of the soil sample of the same area is taken, its moisture content W is testedt, a small amount of water then is sprayed on every group of soil sample surface, until table
After face moistening does not absorb water, soil sample is completely sunk in the water 24 hours, then tests its saturated aqueous rate Wb；
(2) and then by part soil sample in step (1) dry, and with WtBased on, moisture content interval 2-3% is prepared, moisture content is interval
It is 0-WtSoil sample n groups, n >=2；
(3) and then in another part soil sample in step (1) spray water, and with WtBased on, moisture content interval 2-3% is prepared, it is aqueous
It is W that rate is intervalt-WbSoil sample m groups, m >=2.
3. the soil body according to claim 1 and 2 is disintegrated critical moisture content method of testing, it is characterised in that：The soil sample is adopted
Made of undisturbed soil sample.
4. the soil body according to claim 2 is disintegrated critical moisture content method of testing, it is characterised in that：The step (1) and
In step (3), soil sample surface using repeatedly it is a small amount of by the way of sprayed water.
5. the soil body according to claim 2 is disintegrated critical moisture content method of testing, it is characterised in that：In the step (2),
Soil sample is dried by the way of natural air drying or low temperature drying.
6. the disintegration tester that a kind of disintegration of the soil body according to claim any one of 1-5 critical moisture content method of testing is used,
It is characterized in that：Include container (1), container (1) is provided with soil body moisture pickup probe (10), container (1) side be provided with into
Water pipe (2), is provided with pressure inductor (3) at container (1) top center, transmission rod (4) is connected with pressure inductor (3), passes
Power bar (4) is stretched into container (1) straight down, and is connected with web plate (5) in bottom；Pressure inductor (3) and soil body moisture are passed
Sense probe (10) is electrically connected with computer (6).
7. the soil body according to claim 6 is disintegrated critical moisture content disintegration tester, it is characterised in that：The one of the container (1)
Side is additionally provided with drainpipe (8), and drainpipe (8) is between web plate (5) and pressure inductor (3).
8. the soil body according to claim 6 is disintegrated critical moisture content disintegration tester, it is characterised in that：Set on the container (1)
There is battery (9), battery (9) is electrically connected with the pressure inductor (3) and computer (6).
9. the soil body according to claim 8 is disintegrated critical moisture content disintegration tester, it is characterised in that：Set on the container (1)
There is display (7), display (7) is electrically connected with the battery (9) and computer (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710142024.4A CN106932554A (en) | 2017-03-10 | 2017-03-10 | A kind of soil body is disintegrated critical moisture content method of testing and disintegration tester |
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| CN201710142024.4A CN106932554A (en) | 2017-03-10 | 2017-03-10 | A kind of soil body is disintegrated critical moisture content method of testing and disintegration tester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449888A (en) * | 2017-08-04 | 2017-12-08 | 重庆三峡学院 | A kind of multifunction soil is disintegrated experimental provision |
| CN108020482A (en) * | 2017-11-22 | 2018-05-11 | 石家庄铁道大学 | A kind of dynamic water disintegration screening test device and method |
| CN108709832A (en) * | 2018-05-08 | 2018-10-26 | 中山大学 | A kind of measurement device and method of the effective penetration depth of organic stabilizer |
| CN110632278A (en) * | 2019-10-25 | 2019-12-31 | 福州大学 | Experimental determination device and method for soil body disintegration characteristics under different flow velocity conditions |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107449888A (en) * | 2017-08-04 | 2017-12-08 | 重庆三峡学院 | A kind of multifunction soil is disintegrated experimental provision |
| CN107449888B (en) * | 2017-08-04 | 2019-10-25 | 重庆三峡学院 | A kind of multifunction soil disintegration experimental provision |
| CN108020482A (en) * | 2017-11-22 | 2018-05-11 | 石家庄铁道大学 | A kind of dynamic water disintegration screening test device and method |
| CN108709832A (en) * | 2018-05-08 | 2018-10-26 | 中山大学 | A kind of measurement device and method of the effective penetration depth of organic stabilizer |
| CN110632278A (en) * | 2019-10-25 | 2019-12-31 | 福州大学 | Experimental determination device and method for soil body disintegration characteristics under different flow velocity conditions |
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Application publication date: 20170707 |