CN108489882A - It is a kind of can more experiment control conditions Seep- Solidifying experimental provision and application method - Google Patents
It is a kind of can more experiment control conditions Seep- Solidifying experimental provision and application method Download PDFInfo
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- CN108489882A CN108489882A CN201810291354.4A CN201810291354A CN108489882A CN 108489882 A CN108489882 A CN 108489882A CN 201810291354 A CN201810291354 A CN 201810291354A CN 108489882 A CN108489882 A CN 108489882A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 95
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000012360 testing method Methods 0.000 claims abstract description 54
- 238000007596 consolidation process Methods 0.000 claims abstract description 31
- 238000006073 displacement reaction Methods 0.000 claims abstract description 31
- 239000011148 porous material Substances 0.000 claims abstract description 14
- 239000004575 stone Substances 0.000 claims description 49
- 230000035699 permeability Effects 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 12
- 238000007906 compression Methods 0.000 claims description 12
- 230000035515 penetration Effects 0.000 claims description 7
- 235000014121 butter Nutrition 0.000 claims description 6
- 239000011800 void material Substances 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000003204 osmotic effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000026683 transduction Effects 0.000 abstract 1
- 238000010361 transduction Methods 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
-
- 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
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Dispersion Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses it is a kind of can more experiment control conditions Seep- Solidifying experimental provision and application method, retaining ring including loop configuration, experiment soil sample is provided in retaining ring, retaining ring top is provided with piston, upper piston area is provided with displacement meter guide rod, the external side of retaining ring is provided with displacement meter frame, the horizontal segment of displacement meter frame is vacantly arranged on the top of displacement meter guide rod, the deflection of soil sample is measured by displacement meter guide rod, the lower part of retaining ring is set with lower retaining ring, the top of retaining ring is connect by pipeline with water storage cup, lower retaining ring is connect with hole pressure device and water storage cup respectively by pipeline, pore water pressure changing rule and water yield for observing consolidation test.The problems such as present invention solves the multiple triviality for making soil sample transduction equipment existing in the prior art, and experiment condition is single, and displacement of volume is inaccurate.
Description
Technical field
The invention belongs to soil mechanics experimental rig technical fields, and in particular to it is a kind of can more experiment control conditions infiltration it is solid
Solid experiment device and application method.
Background technology
Carrying out soil sample permeability test key instrument in the prior art is《Standard for test methods of earthworks》Described in " constant head
The falling head permeameter in constant head permeameter and " variable head permeability test " in permeability test ".Above-mentioned instrument is only capable of carrying out
Simple permeability test, but apply without standard measure and uniformly consolidation pressure, therefore be difficult to be accurately obtained void ratio, cause to test number
According to inaccuracy.The instrument for carrying out consolidation test in the prior art is compressing tester, and pressurized conditions generally adopt sliding weight of steelyard formula or lever
Formula, this instrument only carries out the partial shrinkage characteristic under the two-sided drainage condition of single soil sample, and is unable to control drainage condition and obtains
Less than accurate displacement, more change without the pore water pressure in intuitive continuous objective observation data characterization experimentation,
Internal filter paper defective tightness chimeric with permeable stone.And often need to apply the Penetration Signature and consolidation of soil in engineer application simultaneously
Characteristic, but existing permeability experimental facility can only test Penetration Signature, and existing consolidation device is only capable of part of detecting consolidation
Characteristic, therefore secondary making soil sample test consolidation characteristics are needed, increase the triviality of experiment.
Invention content
In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing one kind can test more
The Seep- Solidifying experimental provision and application method of control condition solve multiple making soil sample conversion device existing in the prior art
The problems such as triviality of device, experiment condition is single, and displacement of volume is inaccurate.
The present invention uses following technical scheme：
It is a kind of can more experiment control conditions Seep- Solidifying experimental provision, include the retaining ring of loop configuration, setting in retaining ring
There are experiment soil sample, retaining ring top to be provided with piston, upper piston area is provided with displacement meter guide rod, and the external side of retaining ring is provided with
The horizontal segment of displacement meter frame, displacement meter frame is vacantly arranged on the top of displacement meter guide rod, and soil can be measured by displacement meter guide rod
The lower part of the deflection of sample, retaining ring is set with lower retaining ring, and the top of retaining ring is connect by pipeline with water storage cup, and lower retaining ring passes through pipe
Road is connect with hole pressure device and water storage cup respectively, pore water pressure changing rule and water yield for observing consolidation test.
Specifically, top filter paper and top permeable stone, top are disposed between soil sample top and piston from bottom to up
One end of permeable stone and collecting pipe connects, and the other end of collecting pipe is connect with water storage cup, and scale is provided in water storage cup.
Further, piston is connect by the rubber ring of O-shaped structure with retaining ring.
Further, piston is shape for hat pressurizing piston, and is provided with butter on the piston wall of piston.
Specifically, being provided with lower part filter paper in lower retaining ring, lower part filter paper is located at the lower part of soil sample, the setting of lower part filter paper lower part
There is lower part permeable stone, several grooves are provided on the permeable stone of lower part, for being drained in experiment.
Further, one end of lower part permeable stone and connecting conduit connects, and the other end of connecting conduit is by triple valve point
Not with hole pressure device and water storage cup.
It is a kind of can more experiment control conditions Seep- Solidifying experimental provision application method, original state is cut by cutting ring first
Soil sample keeps soil layer compression direction consistent with natural soil layer compression direction, and soil sample is accomplished to the soil more than cutting ring after removal impurity
Then column repaiies soil more than upper and lower ends, then two end surfaces of equating soil sample, soil sample is made；
Then lower part permeable stone and lower part filter paper are sequentially placed into the bottom of experimental provision, the pressing of lower retaining ring is entrenched in down
In portion's permeable stone and lower part filter paper, it is put into the soil sample that step S1 makes, then adds retaining ring, top filter paper is put on soil sample top
Coating butter on the piston wall of piston is mounted on retaining ring after being then set with rubber ring, on the top of piston with top permeable stone
Displacement meter guide rod is installed in portion, and mounted experimental provision is placed on increased pressure frame, and percentage amounts are loaded onto in alignment increased pressure frame center
Table, top permeable stone are connect by collecting pipe with water storage cup, lower part permeable stone by connecting conduit connect triple valve after respectively with
Hole pressure device and water storage cup；Consolidation test and permeability test are finally carried out respectively.
Specifically, the extending distance of percentile scale is not more than 8mm in step S2.
Specifically, consolidation test is specially in step S3：
If S3011, the consolidation test for carrying out single side draining, close triple valve, threeway are opened if carrying out two-sided draining
Valve；
S3012, it is required according to soil sample test, hierarchical loading simultaneously records load Pi, stopwatch is started while loading, records
Meter reading records meter reading in chronological order after loading, select 10~15 minutes for level-one, then by corresponding dial gauge
Reading Hi records are filled in a form；
S3013, observe and record hole pressure device pore water pressure delta data；Observation tests pore water in seepage consolidation
The changing rule of pressure；
S3014, according to density p, proportion Gs, void ratio e0, particle clear height hs before testing, soil sample height h0 is calculated before testing
The compression property index of soil sample；
S3015, show that the Penetration Signature of soil sample in the case of external load is consolidated under same loading condition according to above-mentioned data
Both characteristic notes comparison.
Specifically, permeability test is specially in step S3：
When experiment, soil sample section is A, is highly the saturation soil sample of h0, and tap is connected using collecting pipe, make water from upper and
Under flow through soil sample, and be discharged from lower part through connecting conduit；
After the exudation flow Q of upper dankness stone to lower permeable stone range difference △ h and lower outlet stablizes, read by certain
The water volume V of time t lower outlet obtains osmotic coefficient k in turn.
Compared with prior art, the present invention at least has the advantages that：
The present invention it is a kind of can more experiment control conditions Seep- Solidifying experimental provision, be provided with reality in the retaining ring of loop configuration
It tests and soil sample, retaining ring top is used to be provided with piston, upper piston area is provided with displacement meter guide rod, and the external side of retaining ring is provided with displacement
Frame is counted, the horizontal segment of displacement meter frame is vacantly arranged on the top of displacement meter guide rod, and the deformation of soil sample is measured by displacement meter guide rod
Amount, the lower part of retaining ring is set with lower retaining ring, and the top of retaining ring is connect by pipeline with water storage cup, lower retaining ring by pipeline respectively with
Hole pressure device is connected with water storage cup, pore water pressure changing rule and water yield for observing consolidation test, and the instrument of device is close
Envelope property is good, can collect the pore water being discharged in consolidation and process of osmosis and water leakage is small, according to different experiment conditions, you can
Two-sided draining can also be carried out by carrying out single side draining, also be can measure the dissipation law of pore water pressure, can be carried out at the same time consolidation test,
Permeability test studies the Penetration Signature of soil sample in the case of external load.
Further, using shape for hat pressurizing piston, seal is improved, is added between piston and the consolidation container of entirety O-shaped
Rubber ring, and in piston wall coating butter, increase leakproofness, ensure that water can not ooze out from there.
Further, the mosaic of the permeable stone and filter paper of lower part is good, avoids the condition in no filter paper or mosaic difference
Lower molecule blocks permeable stone.
Further, according to different experiment conditions, drainage condition, experimental implementation letter can be controlled by the triple valve of lower part
It is single.
The invention also discloses it is a kind of can more experiment control conditions Seep- Solidifying experimental provision application method, select first
With rational cutting ring, downward, soil layer compression direction should be consistent with natural soil layer compression direction, and sees for the edge of a knife when cutting undisturbed soil sample
It examines the level of soil sample, color, have free from admixture etc., taken out when if any impurity and being filled a vacancy place with remaining soil, careful rand flanging is cut,
Pay attention to that cutting ring bias is avoided to bury, soil sample is accomplished into the earth pillar slightly larger than cutting ring, until sample protrudes cutting ring, then repaiies
It is native more than upper and lower ends, then two end surfaces of equating sample, clean cutting ring outer wall, then above-mentioned experimental provision be installed, then respectively into
The experiment of row consolidation and permeability test, can observe the pore water pressure changing rule of consolidation test and accurate water yield.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Description of the drawings
Fig. 1 is experimental provision structural schematic diagram of the present invention.
Wherein：1. collecting pipe；2. water storage cup；3. connecting conduit；41. top permeable stone；42. lower part permeable stone；51. top
Filter paper；52. lower part filter paper；6. lower retaining ring；7. soil sample；8. piston；9. displacement meter guide rod；10. displacement meter frame；11. retaining ring；12.
Rubber ring；13. triple valve.
Specific implementation mode
In the description of the present invention, it is to be understood that, term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "top", "bottom", "inner", "outside", " side ", " one end ", " one side " is based on shown in attached drawing
Orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device
Or element must have a particular orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Referring to Fig. 1, the present invention it is a kind of can more experiment control conditions Seep- Solidifying experimental provision, including experiment soil sample
7, soil sample 7 is arranged in the inside of retaining ring 11, and retaining ring 11 is used for the lateral spacing condition of lateral retaining ring guarantee test, the setting of 11 top of retaining ring
There are piston 8, piston 8 to be connect with retaining ring 11 by the rubber ring 12 of O-shaped structure, 8 top of piston is provided with displacement meter guide rod 9, position
The top for moving meter guide rod 9 is vacantly provided with displacement meter frame 10, and soil sample is measured for adding dial gauge in displacement meter frame in testing
Deflection, is disposed with top permeable stone 41 and top filter paper 51 between piston 8 and soil sample 7, the lower part of retaining ring 11 is provided with
Lower retaining ring 6 is provided with lower part filter paper 52 in lower retaining ring 6, and lower part filter paper 52 is located at the lower part of soil sample 7, and filter paper 52 lower part in lower part is set
It is equipped with lower part permeable stone 42, several grooves are provided on lower part permeable stone 42, for being drained in experiment, one end of connecting conduit 3
Connect with lower part permeable stone 42, the other end connect triple valve 13, the remaining both ends of triple valve 13 be separately connected hole pressure device and
Water storage cup 2, so as to the pore water pressure changing rule for observing consolidation test and accurate water yield.
Piston 8 is shape for hat pressurizing piston, in the piston wall coating butter of piston 8 in experimentation, increases leakproofness, ensures
Water can not ooze out from there, ensure the accuracy that later stage draining measures.
Top permeable stone 41 with top filter paper 51 is used to that the water in experiment to be made smoothly to be discharged, to prevent the fine particle of soil sample
It blocks permeable stone and adds filter paper, collecting pipe 1 is added between piston 8 and top permeable stone 41, one end and top of collecting pipe 1 are saturating
Water stone 41 connects, and the other end is connect with graduated water storage cup 2, so that the water for excluding soil sample in pressurized process exports,
The water that discharge can be measured immediately, this connecting tube is water service pipe under conditions of permeability test.
Add filter paper to prevent the fine particle of soil sample from blocking permeable stone, and the permeable stone of lower part 4 is changed to groove, and
The group sequence ligand of experimental rig is lower part filter paper 52, lower part permeable stone 42 and lower retaining ring 6, for increasing the chimeric of experimental rig
Property, avoid making the fine grained of soil sample block drainage rock because of the mosaic difference of filter paper and permeable stone, influence the discharge of water with thoroughly
The use of water stone.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being described and shown in usually here in attached drawing is real
Applying the component of example can be arranged and be designed by a variety of different configurations.Therefore, the present invention to providing in the accompanying drawings below
The detailed description of embodiment be not intended to limit the range of claimed invention, but be merely representative of the selected of the present invention
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The present invention it is a kind of can more experiment control conditions Seep- Solidifying experimental provision application method it is specific as follows：
S1, soil sample is prepared
Rational cutting ring is selected, downward, soil layer compression direction should be with natural soil layer compression side for the edge of a knife when cutting undisturbed soil sample
It to consistent, and observe the level of soil sample, color, have free from admixture etc., taken out when if any impurity and being filled a vacancy place with remaining soil, carefully
Rand flanging is cut, and pays attention to that cutting ring bias is avoided to bury, and soil sample is accomplished the earth pillar slightly larger than cutting ring, until soil sample protrusion cutting ring is
Only, soil more than upper and lower ends, then two end surfaces of equating soil sample are then repaiied, cutting ring outer wall is cleaned；
S2, installation soil sample and instrument
S201, the bottom that device will be put into after the lower part permeable stone 42 with shallow grooves plus lower part filter paper 52；
S202, the pressing of lower retaining ring 6 is entrenched in lower part permeable stone 42 and lower part filter paper 52；
S203, the soil sample that the first step is made is put at soil sample 7, the edge of a knife is downward；
S204, then add retaining ring 11, meet the lateral spacing condition of test specimen；
S205, it is put into top filter paper 41 and top permeable stone 51 in test piece upper part, is capped shape for hat piston and displacement meter is led
Bar 9, and O-shaped rubber ring 12 is added between piston and the consolidation container of entirety, in piston wall coating butter in experimentation；
Two-part connecting conduit above and below S206, connection；
S207, the consolidation container installed being placed on increased pressure frame, percentile scale is loaded onto in alignment increased pressure frame center, and
It adjusts its extending distance and is not more than 8mm, then check whether scale is sensitive and vertical, and dial gauge minute hand is made just to be directed at " 0 "
Word, the centre of hour hand alignment scale (dial gauge motion bar is mentioned top and adjusted again " 0 " by attention).
S3, it is tested
S301, consolidation test
If S3011, the consolidation test for carrying out single side draining, close triple valve, threeway are opened if carrying out two-sided draining
Valve.
S3012, it is required according to soil sample test, hierarchical loading simultaneously records load Pi, stopwatch is started while loading, records
Meter reading.According to SD128-84《Earthwork test rule》, meter reading is recorded after loading in chronological order, in teaching test by when
Between limit 10-15 minute level-ones may be selected, then the reading Hi of corresponding dial gauge is recorded and is filled in a form
S3013, observe and record hole pressure device pore water pressure delta data, to observation seepage consolidation test mesoporous
The changing rule of gap hydraulic pressure
S3014, the compression property index for calculating soil sample：
Proportion and density experiment etc. are had already passed through before experiment and learns density p, and proportion Gs, void ratio e0, particle are net before testing
High hs, soil sample height h0 before testing；
Specimen deformation under certain level-one load：Δ hi=Hi-H0 (dial gauge end readout subtracts-certain level-one load under dial gauge
Initial reading)；
Void ratio decrement：Δ ei=∑ Δs hi/hs；
Void ratio under each stage pressure：Ei=e0- Δs ei；
The compressed coefficient：Ai=[ei-e (i+1)]/[p (i+1)-pi]；
Compression modulus：Es=(1+e1)/ai；
S302, permeability test
When experiment, soil sample section is A, is highly the saturation soil sample of h0, and water pipe end is collected using the original connection in top
Tap is connected, so that water is flowed through soil sample from top to bottom, and be discharged from lower part water outlet；
Wait for head difference △ h (i.e. upper dankness stone to lower permeable stone distance) and exudation flow Q (the exudation flow of lower outlet)
After stabilization, the water volume V by certain time t lower outlet is read, then V=Q*t=ν * A*t；
According to Darcy's law, v=k*i, then：V=k* (△ h/h0) * A*t；To obtain osmotic coefficient k=q*L/A* △ h
=Q*h0/A* △ h*.
The Penetration Signature of soil sample remembers the two comparison with consolidation characteristics under loading condition in the case of external load
When experiment, soil sample section is A, is highly the saturation soil sample of h0, and water pipe end is collected using the original connection in top
Tap is connected, so that water is flowed through soil sample from top to bottom, and be discharged from lower part water outlet.Wait for that (i.e. upper dankness stone arrives head difference △ h
Lower permeable stone distance) and after exudation flow Q (the exudation flow of lower outlet) stablizes, read by flowing through soil in certain time t
The water V of sample；According to soil sample test requirement, hierarchical loading simultaneously records load Pi, and stopwatch is started while loading, and record sheet is read
Number.According to SD128-84《Earthwork test rule》, meter reading is recorded after loading in chronological order, is limited by the time in teaching test
10-15 minutes level-ones may be selected in system, and then the reading Hi records of corresponding dial gauge are filled in a form；Then according to above-mentioned
Data-handling procedure arranges data, to obtain external load in the case of soil sample Penetration Signature with it is special with being consolidated under loading condition
Property note both comparison.
The above content is merely illustrative of the invention's technical idea, and protection scope of the present invention cannot be limited with this, every to press
According to technological thought proposed by the present invention, any change done on the basis of technical solution each falls within claims of the present invention
Protection domain within.
Claims (10)
1. it is a kind of can more experiment control conditions Seep- Solidifying experimental provision, which is characterized in that the retaining ring including loop configuration
(11), experiment soil sample (7) is provided in retaining ring (11), retaining ring (11) top is provided with piston (8), the setting of piston (8) top
There are displacement meter guide rod (9), the external side of retaining ring (11) to be provided with displacement meter frame (10), the horizontal segment of displacement meter frame (10) is hanging
Top in displacement meter guide rod (9) is set, the deflection of soil sample (7) can be measured by displacement meter guide rod (9), retaining ring (11)
Lower part is set with lower retaining ring (6), and the top of retaining ring (11) is connect by pipeline with water storage cup (2), and lower retaining ring (6) passes through pipeline point
It is not connect with hole pressure device and water storage cup (2), pore water pressure changing rule and water yield for observing consolidation test.
2. it is according to claim 1 it is a kind of can more experiment control conditions Seep- Solidifying experimental provision, which is characterized in that soil
Top filter paper (51) and top permeable stone (41) are disposed between sample (7) top and piston (8) from bottom to up, top is permeable
Stone (41) is connect with one end of collecting pipe (1), and the other end of collecting pipe (1) is connect with water storage cup (2), and is set in water storage cup (2)
It is equipped with scale.
3. it is according to claim 1 or 2 it is a kind of can more experiment control conditions Seep- Solidifying experimental provision, feature exists
In piston (8) is connect by the rubber ring (12) of O-shaped structure with retaining ring (11).
4. it is according to claim 3 it is a kind of can more experiment control conditions Seep- Solidifying experimental provision, which is characterized in that it is living
It is shape for hat pressurizing piston to fill in (8), and is provided with butter on the piston wall of piston (8).
5. it is according to claim 1 it is a kind of can more experiment control conditions Seep- Solidifying experimental provision, which is characterized in that under
It is provided with lower part filter paper (52) in retaining ring (6), lower part filter paper (52) is located at the lower part of soil sample (7), and lower part filter paper (52) lower part is set
It is equipped with lower part permeable stone (42), lower part permeable stone is provided with several grooves on (42), for being drained in experiment.
6. it is according to claim 5 it is a kind of can more experiment control conditions Seep- Solidifying experimental provision, which is characterized in that under
Portion's permeable stone (42) is connect with one end of connecting conduit (3), the other end of connecting conduit (3) by triple valve (13) respectively with hole
Pressure device and water storage cup (2).
7. it is a kind of according to described in any one of claim 1 to 6 can the Seep- Solidifying experimental provisions of more experiment control conditions make
With method, which is characterized in that cut undisturbed soil sample by cutting ring first, keep soil layer compression direction and natural soil layer compression direction
Unanimously, soil sample is accomplished into the earth pillar more than cutting ring after removal impurity, then repaiies soil more than upper and lower ends, then equating soil sample both ends table
Soil sample (7) is made in face；
Lower part permeable stone (42) and lower part filter paper (52) are then sequentially placed into the bottom of experimental provision, lower retaining ring (6) are pressed
It is entrenched in lower part permeable stone (42) and lower part filter paper (52), is put into the soil sample (7) that step S1 makes, then add retaining ring
(11), it is put into top filter paper (51) and top permeable stone (41) on soil sample (7) top, it is yellow by being smeared on the piston wall of piston (8)
Then oil is set with rubber ring (12) and is mounted on retaining ring (11) afterwards, in the top of piston (8) installation displacement meter guide rod (9), will pacify
The experimental provision installed is placed on increased pressure frame, and percentile scale is loaded onto, top permeable stone (41) passes through in alignment increased pressure frame center
Collecting pipe (1) is connect with water storage cup (2), lower part permeable stone (42) by connecting conduit (3) connect after triple valve (13) respectively with
Hole pressure device and water storage cup (2)；Consolidation test and permeability test are finally carried out respectively.
8. it is according to claim 7 it is a kind of can more experiment control conditions Seep- Solidifying experimental provision application method,
It is characterized in that, the extending distance of percentile scale is not more than 8mm in step S2.
9. it is according to claim 7 it is a kind of can more experiment control conditions Seep- Solidifying experimental provision application method,
It is characterized in that, consolidation test is specially in step S3：
If S3011, the consolidation test for carrying out single side draining, close triple valve, triple valve are opened if carrying out two-sided draining；
S3012, it is required according to soil sample test, hierarchical loading simultaneously records load Pi, and stopwatch is started while loading, and record sheet is read
Number, records meter reading, selects 10~15 minutes for level-one, then by the reading of corresponding dial gauge in chronological order after loading
Hi records are filled in a form；
S3013, observe and record hole pressure device pore water pressure delta data；It observes and tests pore water pressure in seepage consolidation
Changing rule；
S3014, according to density p, proportion Gs, void ratio e0, particle clear height hs before testing, soil sample height h0 calculates soil sample before testing
Compression property index；
S3015, obtained according to above-mentioned data in the case of external load the Penetration Signature of soil sample with consolidation characteristics under loading condition
Both notes comparison.
10. it is according to claim 7 it is a kind of can more experiment control conditions Seep- Solidifying experimental provision application method,
It is characterized in that, permeability test is specially in step S3：
When experiment, soil sample section is A, is highly the saturation soil sample of h0, connects tap using collecting pipe, water is made to flow from top to bottom
It is discharged through connecting conduit through soil sample, and from lower part；
After the exudation flow Q of upper dankness stone to lower permeable stone range difference △ h and lower outlet stablizes, reads and pass through certain time
The water volume V of t lower outlets obtains osmotic coefficient k in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810291354.4A CN108489882A (en) | 2018-04-03 | 2018-04-03 | It is a kind of can more experiment control conditions Seep- Solidifying experimental provision and application method |
Applications Claiming Priority (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109580370A (en) * | 2018-12-04 | 2019-04-05 | 三峡大学 | A kind of test device and its application method for soil test |
| CN110441156A (en) * | 2019-07-20 | 2019-11-12 | 大连理工大学 | A method of three axis sample membrane penetrations are measured based on soil stabilization state characteristic |
| CN114166645A (en) * | 2022-02-14 | 2022-03-11 | 潍坊学院 | Indoor soil body negative pressure consolidation device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631976A (en) * | 2017-10-23 | 2018-01-26 | 桂林理工大学 | Seepage consolidation instrument and its application under chemico-mechanic coupling |
| CN208239265U (en) * | 2018-04-03 | 2018-12-14 | 榆林学院 | It is a kind of can more experiment control conditions Seep- Solidifying experimental provision |
| CN109342150A (en) * | 2018-12-19 | 2019-02-15 | 中国科学院武汉岩土力学研究所 | A kind of experimental rig and method for gassiness soil sample consolidation test and permeability test |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107631976A (en) * | 2017-10-23 | 2018-01-26 | 桂林理工大学 | Seepage consolidation instrument and its application under chemico-mechanic coupling |
| CN208239265U (en) * | 2018-04-03 | 2018-12-14 | 榆林学院 | It is a kind of can more experiment control conditions Seep- Solidifying experimental provision |
| CN109342150A (en) * | 2018-12-19 | 2019-02-15 | 中国科学院武汉岩土力学研究所 | A kind of experimental rig and method for gassiness soil sample consolidation test and permeability test |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109580370A (en) * | 2018-12-04 | 2019-04-05 | 三峡大学 | A kind of test device and its application method for soil test |
| CN110441156A (en) * | 2019-07-20 | 2019-11-12 | 大连理工大学 | A method of three axis sample membrane penetrations are measured based on soil stabilization state characteristic |
| CN114166645A (en) * | 2022-02-14 | 2022-03-11 | 潍坊学院 | Indoor soil body negative pressure consolidation device |
| CN114166645B (en) * | 2022-02-14 | 2022-04-12 | 潍坊学院 | Indoor soil body negative pressure consolidation device |
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