CN109142070A - Rock-soil material seepage deformation test method and test device under complex stress condition - Google Patents
Rock-soil material seepage deformation test method and test device under complex stress condition Download PDFInfo
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- CN109142070A CN109142070A CN201810784421.6A CN201810784421A CN109142070A CN 109142070 A CN109142070 A CN 109142070A CN 201810784421 A CN201810784421 A CN 201810784421A CN 109142070 A CN109142070 A CN 109142070A
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- 239000000463 material Substances 0.000 title claims abstract description 49
- 239000002689 soil Substances 0.000 title claims abstract description 49
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 230000003204 osmotic effect Effects 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 230000008595 infiltration Effects 0.000 claims abstract description 17
- 238000001764 infiltration Methods 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 7
- 239000004575 stone Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000002828 fuel tank Substances 0.000 claims description 3
- 239000011435 rock Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000035699 permeability Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000009715 pressure infiltration Methods 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/023—Pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0258—Non axial, i.e. the forces not being applied along an axis of symmetry of the specimen
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention discloses rock-soil material seepage deformation test method and test device under a kind of complex stress condition, which includes the following steps: to make cylindrical specimens, measurement record specimen size；Sample is placed in pressure chamber and closes pressure chamber, SERVO CONTROL loads confining pressure to target value, keeps confining pressure constant；Then SERVO CONTROL multi-stage loading osmotic pressure changes over time record and penetrates through the water flow of sample, the axial deformation of sample and circumferential deformation, determines infiltration coefficient, axial strain and the hoop strain situation of change of sample, that reflects the seepage deformation situations of sample；SERVO CONTROL load confining pressure and osmotic pressure are repeated, the seepage deformation situation of rock-soil material under complex stress condition is obtained.Test device includes pressure chamber, confining pressure servo loading system and osmotic pressure servo loading system, sample is fixed in pressure chamber, and be equipped with axial strain meter, sample upper, middle and lower is separately installed with hoop strain meter.
Description
Technical field
The present invention relates to the rock-soil material seepage deformation test methods and test device under a kind of complex stress condition, belong to
Geotechnical engineering field.
Background technique
The seepage deformation characteristic of rock-soil material is the weight of the fields such as civil engineering, hydraulic and hydroelectric engineering, energy project concern
One of point problem.The generation of seepage deformation engineering accident simultaneously, as side slope deforms under the action of underground water, in addition it is sliding
Under the effect of library water high water head seepage deformation occurs for slope, earth and rockfill dam and rock-fill dams, and rock mass discontinuity is in long-term reservoir level and underground
Thief zone pressure is formed under the action of water causes Dam Foundation Rock or reservoir stability that unstable failure etc. occurs.
Rock-soil material seepage deformation characteristic is influenced by factors such as confining pressure, osmotic pressure, rock-soil material internal pore structures.Do
Seepage deformation characteristic and related permeability parameters of the clear rock-soil material under complex stress condition, for instructing engineering design and construction
All have great importance.The current existing general scale of Rock And Soil seepage deformation instrument is smaller, and sample can not accurate description rock
The internal structure of soil material；Stress state is single, the Rock And Soil Penetration Signature being unable to test under complex stress condition；There are deformations
It measures inaccurate or the deficiencies of deformation can not be obtained.
Summary of the invention
Goal of the invention: in view of the problems of the existing technology the purpose of the present invention, provides rock under a kind of complex stress condition
Soil material seepage deformation test method and corresponding test device can be widely used for the soil body, rock material and native stone mixture etc.
The measurement of rock-soil material seepage deformation parameter.
Technical solution: rock-soil material seepage deformation test method under a kind of complex stress condition of the present invention, including
Following steps:
(1) cylindrical specimens of rock-soil material, measurement record specimen size are made；
(2) sample is placed in pressure chamber, confining pressure room；
(3) confining pressure is loaded to target value to pressure chamber by SERVO CONTROL oil pump；
(4) keep confining pressure constant, by SERVO CONTROL water pump multi-stage loading osmotic pressure, after every grade of osmotic pressure load is stablized, at any time
Between variation record penetrate through the water flow of sample, the axial deformation of sample and circumferential deformation, determine sample under every grade of osmotic pressure
Infiltration coefficient, axial strain, hoop strain change over time situation, obtain the seepage deformation of sample under same confining pressure difference osmotic pressure
Changing rule；Wherein, the seepage deformation situation of the variation side reflection sample of infiltration coefficient, the change of axial strain and annular strain
Change the seepage deformation changing rule for directly reflecting sample；
(5) step (3) and (4) are repeated, SERVO CONTROL loads different confining pressure and osmotic pressure, obtains rock under complex stress condition
The seepage deformation changing rule of soil material.
In above-mentioned steps (4), under a certain osmotic pressure P, osmotic coefficient k of the rock-soil material sample within the t period is true according to the following formula
It is fixed:
In formula, Q is the water flow for penetrating through sample after this grade of osmotic pressure load is stablized in the t period, and A is the cross section of sample
Product, h are the height of sample.
Under a certain osmotic pressure, rock-soil material sample axial strain ε 1 at a time and hoop strain ε 3 are respectively as follows:
Wherein, X1 be axial deflection of the sample at the moment, L1, L2, L3 be respectively the moment sample top, middle part and
The circumferential deformation amount of lower part.
Rock-soil material seepage deformation test device under a kind of complex stress condition of the present invention, including pressure chamber and
The confining pressure servo loading system and osmotic pressure servo loading system being connected to respectively with pressure chamber, pressure chamber include pressure chamber's top cover, top
Portion's pressure head and pressure chamber's bottom plate, and sample is set in pressure chamber, which is fixed between top ram and pressure chamber's bottom plate；Top
It is installed with axial strain meter on portion's pressure head and axial strain meter lower end is fixed with pressure chamber's bottom plate, sample upper, middle and lower
It is separately installed with hoop strain meter.
Axial strain meter can be LVDT strain gauge, for precise measurement osmotic pressure effect under sample axial deformation,
That is deformation of the sample in permeation pathway direction.The hoop strain meter of upper, middle and lower three can be with precise measurement in seepage deformation process
In, rock-soil material tests the circumferential deformation of different parts.
Preferably, rubber sleeve is wrapped up outside sample, hoop strain meter is set in rubber sleeve upper, middle and lower.
Further, sample both ends are equipped with permeable stone.Permeable stone both can isolate the contact of sample with infiltration pipeline, simultaneously
Infiltration is set to have the ability to be evenly distributed at the top of sample.
Wherein, osmotic pressure servo loading system includes SERVO CONTROL water pump and water tank, and SERVO CONTROL water pump passes through water inlet line
It is connect with sample top, and water inlet line is equipped with based on the first pressure by monitoring display osmotic pressure and intakes for measuring
The water inlet flowmeter of amount；Sample bottom is equipped with outlet conduit, which, which is equipped with, penetrates through sample for measuring
The water outlet flowmeter of water flow.By can SERVO CONTROL water pump carry out osmotic pressure load can set difference according to needed for test
The osmotic pressure of size.
Further, confining pressure servo loading system includes SERVO CONTROL oil pump and fuel tank, and SERVO CONTROL oil pump passes through oil inlet
Pipeline is connected to pressure chamber, and inflow pipeline is equipped with based on the second pressure by monitoring display confining pressure.Confining pressure servo loading system
System can SERVO CONTROL oil pump carry out confining pressure load, thus can measure different confining pressures act on lower rock-soil material samples seepage deformation and
Permeability parameters.
The utility model has the advantages that compared with the prior art, the advantages of the present invention are as follows: rock-soil material seepage deformation test of the invention
Method accurately controls osmotic pressure and confining pressure by servopump and is loaded automatically, it can be achieved that complex stress condition and stress path are accurate
Load, and then realize that the seepage deformation under complex stress condition is accurately tested；This method by measurement sample axial deformation and
Circumferential deformation, it may be determined that go out the axial strain and hoop strain under different osmotic power and confining pressure effect, and seeped by record
Changes in flow rate in saturating deformation process calculates the changing rule of sample infiltration coefficient under osmotic pressure effect, these parameters can
With the seepage deformation situation of accurate Characterization rock-soil material；In addition, test method of the invention by sample be placed in pressure chamber into
Row seepage deformation test, test sample size does not limit test process, versatile.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of rock-soil material seepage deformation test device of the invention；
Fig. 2 is rock-soil material sample mounting structure schematic diagram.
Specific embodiment
Technical solution of the present invention is described further with reference to the accompanying drawing.
Rock-soil material seepage deformation test method, includes the following steps: under a kind of complex stress condition of the invention
(1) cylindrical specimens of rock-soil material are made, the size of measurement record sample is big；
(2) sample is placed in pressure chamber, confining pressure room；
(3) confining pressure is loaded to target value to pressure chamber by SERVO CONTROL oil pump；
(4) keep confining pressure constant, by SERVO CONTROL water pump multi-stage loading osmotic pressure, after every grade of osmotic pressure load is stablized, at any time
Between variation record penetrate through the water flow of sample, the axial deformation of sample and circumferential deformation, determine sample under every grade of osmotic pressure
Infiltration coefficient, axial strain, hoop strain change over time situation.Wherein, the infiltration of the variation side reflection sample of infiltration coefficient
The variation of saturating deformation, axial strain and annular strain directly reflects the seepage deformation changing rule of sample；So as to obtain
Obtain the seepage deformation changing rule of sample under same confining pressure difference osmotic pressure；
Wherein, under a certain osmotic pressure, osmotic coefficient k of the rock-soil material sample within the t period determines according to the following formula:
In formula, P is osmotic pressure, and Q is the water flow for penetrating through sample after this grade of osmotic pressure load is stablized in the t period, and A is
The cross-sectional area of sample, h are the height of sample.
Under a certain osmotic pressure, rock-soil material sample axial strain ε 1 at a time and hoop strain ε 3 are respectively as follows:
Wherein, X1 is axial deflection of the sample at the moment, when the axial direction using multiple axial strain meter test samples
When dependent variable, the value of X1 is the average value of multiple axial strain meter test datas；L1, L2, L3 be respectively the moment sample top,
The circumferential deformation amount at middle part and lower part.
(5) step (3) and (4) are repeated, SERVO CONTROL loads different confining pressure and osmotic pressure, obtains rock under complex stress condition
The seepage deformation situation of soil material.
Based on above-mentioned seepage deformation test method, the present invention provides rock-soil material infiltrations under a kind of complex stress condition to become
Shape test device, as Fig. 1~2, including pressure chamber 1, osmotic pressure servo loading system 2 and confining pressure servo loading system 3 three are main
Part, osmotic pressure servo loading system 2 and confining pressure servo loading system 3 are connected to pressure chamber 1 respectively, for accurately control osmotic pressure and
The accurate load of complex stress condition and stress path is realized in the load of confining pressure.
Wherein, pressure chamber 1 includes pressure chamber's top cover 22 and pressure chamber's bottom plate 8, can be by pressure chamber's bottom plate by bolt and nut 9
8 and pressure chamber's top cover 22 is fixed forms totally-enclosed pressure chamber.Top ram 10, top ram 10 are equipped with below pressure chamber's top cover 22
Sample 4 is fixedly mounted between pressure chamber's bottom plate 8, rubber sleeve 7 can be wrapped up outside sample 4, then can pass through circumferential fixation member
23 are fixed on 7 upper/lower terminal of rubber sleeve in top ram 10 and pressure chamber's bottom plate 8.The also settable permeable stone 6 in 4 both ends of sample,
Permeable stone 6 both can isolate the contact of sample 4 with infiltration pipeline, while infiltration being made to have the ability to be evenly distributed at the top of sample.
It is installed with axial strain meter 5 in top ram 10, a LVDT strain such as is respectively set in sample cross two sides
Meter, 5 lower end of axial strain meter and pressure chamber's bottom plate 8 are fixed, and axial strain meter 5 can be with precise measurement sample 4 in osmotic pressure masterpiece
Under, deformation in permeation pathway direction, i.e. the axial deformation of sample；4 upper, middle and lower of sample is separately installed with circumferential direction
Strain gauge 24 when wrapping up rubber sleeve 7 outside sample 4, installs circumferential strain gauge at the position of 7 outside upper, middle and lower of rubber sleeve three
24, can be with precise measurement during seepage deformation, the circumferential deformation of rock-soil material sample different parts.
Osmotic pressure servo loading system 2 by can SERVO CONTROL water pump carry out osmotic pressure load can be set according to needed for test
Different size of osmotic pressure, to can measure under different osmotic power, the seepage deformation and permeability parameters of rock-soil material sample.
Osmotic pressure servo loading system 2 SERVO CONTROL water pump 12 and the water tank 14 that communicates therewith, and water valve 13 is arranged between the two；SERVO CONTROL
For water pump 12 by connecting at the top of water inlet line and sample 4, water inlet line is equipped with first pressure meter 11, for monitoring display infiltration
Pressure is additionally provided with water inlet flowmeter 15, for measuring inflow；4 bottom of sample is equipped with outlet conduit, sets on the outlet conduit
There is water outlet flowmeter 21, for measuring the water flow for penetrating through sample, outlet conduit one end connects sample bottom, the other end
Water storage container 20 can be connected, for collecting the water for penetrating through sample.
Confining pressure servo loading system 3 by can SERVO CONTROL oil pump carry out confining pressure load, can according to test needs, setting load
Different size of confining pressure, to can measure under different confining pressure effects, the seepage deformation and permeability parameters of rock-soil material sample.Confining pressure
Servo loading system 3 includes SERVO CONTROL oil pump 17 and the fuel tank 19 communicated therewith, is provided with oil valve 18 between the two；Servo control
Liquefaction pump 17 is connected to by inflow pipeline with pressure chamber 1, and confining pressure servo loading is carried out outside rubber sleeve 7；On inflow pipeline also
Equipped with second pressure meter 16, for monitoring display confining pressure size.
By osmotic pressure servo loading system 2 and confining pressure servo loading system 3, accurately control osmotic pressure and confining pressure add automatically
It carries, it can be achieved that complex stress condition and stress path accurately load, and then realize that the seepage deformation under complex stress condition is accurate
Test obtains the Penetration Signature of rock-soil material under complex stress condition.
Using the course of work that rock-soil material seepage deformation test device is tested under complex stress condition of the invention
It is as follows:
(1) sample 4 prepared is packed into rubber sleeve 7, permeable stone 6 is placed at 4 both ends of sample；
(2) the circumferential fixation member 23 in 7 bottom of rubber sleeve is fixed on pressure chamber's bottom plate 8 after step (1) after the completion of
On pressure head, top ram 10 is fixed on 7 top of rubber sleeve；
(3) three hoop strain meters 24 are installed and adjusted, while adjusting two LVDT axial strain meters 5；
(4) pressure chamber's top cover 22 is installed, and forms a totally enclosed pressure chamber 1 through fixing with bolt and nut 9；
(5) confining pressure servo loading system 3 and osmotic pressure servo loading system 2 are connected；
(6) confining pressure applies: opening confining pressure and loads oil valve 18, loads confining pressure to target value by confining pressure servo loading system 3；
(7) it after confined pressure steady, opens osmotic pressure and applies water valve 13, permeated by osmotic pressure servo loading system 2
The load of pressure；
(8) it after pressure to be infiltrated is stablized, determines and records, using water inlet flowmeter 15 and water outlet flow
The infiltration coefficient that meter 21 can calculate sample during seepage deformation changes with time；By hoop strain meter 24 and axially
The deformation that strain gauge 5 can measure sample during seepage deformation changes with time rule；By infiltration coefficient-time graph with
Deformation-time graph comparison, it can be seen that infiltration coefficient contacting between the two, variation side of infiltration coefficient with seepage deformation
Reflect sample deformation situation；
(9) osmotic pressure is changed by osmotic pressure servo loading system 2, then repeatedly step (8), recorded under different osmotic pressures
The infiltration coefficient of sample changes and the axial deformation and circumferential deformation situation of sample, to can get under identical confining pressure difference osmotic pressure
Sample deformation changing rule；
(10) confining pressure is changed by confining pressure servo loading system 3, repeats step (7)~(9), can get and tried under different confining pressures
The deformation changing rule of sample.
Claims (8)
1. rock-soil material seepage deformation test method under a kind of complex stress condition, which comprises the steps of:
(1) cylindrical specimens of rock-soil material, measurement record specimen size are made；
(2) sample is placed in pressure chamber, confining pressure room；
(3) confining pressure is loaded to target value to pressure chamber by SERVO CONTROL oil pump；
(4) it keeps confining pressure constant, by SERVO CONTROL water pump multi-stage loading osmotic pressure, after every grade of osmotic pressure load is stablized, becomes at any time
Change record and penetrate through the water flow of sample, the axial deformation of sample and circumferential deformation, determines the infiltration of sample under every grade of osmotic pressure
Coefficient, axial strain, hoop strain situation of change obtain the seepage deformation changing rule of sample under same confining pressure difference osmotic pressure；
(5) step (3) and (4) are repeated, SERVO CONTROL loads different confining pressure and osmotic pressure, obtains ground material under complex stress condition
The seepage deformation changing rule of material.
2. rock-soil material seepage deformation test method under complex stress condition according to claim 1, which is characterized in that step
Suddenly in (4), under a certain osmotic pressure P, osmotic coefficient k of the rock-soil material sample within the t period determines according to the following formula:
In formula, Q is the water flow for penetrating through sample after this grade of osmotic pressure load is stablized in the t period, and A is the cross-sectional area of sample, h
For the height of sample.
3. rock-soil material seepage deformation test method under complex stress condition according to claim 1, which is characterized in that step
Suddenly in (4), under a certain osmotic pressure, rock-soil material sample axial strain ε 1 at a time and hoop strain ε 3 are respectively as follows:
Wherein, X1 is axial deflection of the sample at the moment, and L1, L2, L3 are respectively moment sample top, middle part and the lower part
Circumferential deformation amount.
4. rock-soil material seepage deformation test device under a kind of complex stress condition, which is characterized in that including pressure chamber and divide
The confining pressure servo loading system and osmotic pressure servo loading system not being connected to pressure chamber, the pressure chamber include pressure chamber's top cover,
Top ram and pressure chamber's bottom plate, and sample is placed in pressure chamber, which is fixed between top ram and pressure chamber's bottom plate；
It is installed with axial strain meter in the top ram and axial strain meter lower end is fixed with pressure chamber's bottom plate, sample top, middle part
Hoop strain meter is separately installed with lower part.
5. rock-soil material seepage deformation test device under complex stress condition according to claim 4, which is characterized in that institute
It states and wraps up rubber sleeve outside sample, hoop strain meter is set in rubber sleeve upper, middle and lower.
6. rock-soil material seepage deformation test device under complex stress condition according to claim 4, which is characterized in that institute
Sample both ends are stated equipped with permeable stone.
7. rock-soil material seepage deformation test device under complex stress condition according to claim 4, which is characterized in that institute
Stating osmotic pressure servo loading system includes SERVO CONTROL water pump and water tank, and SERVO CONTROL water pump at the top of water inlet line and sample by connecting
It connects, and water inlet line is equipped with based on the first pressure by monitoring display osmotic pressure and the water inlet stream for measuring inflow
Meter；Sample bottom is equipped with outlet conduit, which is equipped with the water outlet for measuring the water flow for penetrating through sample
Mouth flowmeter.
8. rock-soil material seepage deformation test device under complex stress condition according to claim 4, which is characterized in that institute
Stating confining pressure servo loading system includes SERVO CONTROL oil pump and fuel tank, and SERVO CONTROL oil pump is connected by inflow pipeline and pressure chamber
It is logical, and inflow pipeline is equipped with based on the second pressure by monitoring display confining pressure.
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| CN201810784421.6A CN109142070A (en) | 2018-07-17 | 2018-07-17 | Rock-soil material seepage deformation test method and test device under complex stress condition |
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| CN201810784421.6A CN109142070A (en) | 2018-07-17 | 2018-07-17 | Rock-soil material seepage deformation test method and test device under complex stress condition |
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| CN109612910A (en) * | 2019-02-22 | 2019-04-12 | 常州工程职业技术学院 | A kind of portable pervious concrete pavement device for testing permeability coefficient and test method |
| CN109765161A (en) * | 2019-01-25 | 2019-05-17 | 中国矿业大学 | It is a kind of to utilize permeability test method and device that bucket offer osmotic pressure and confining pressure are provided |
| CN109813626A (en) * | 2019-03-28 | 2019-05-28 | 青岛理工大学 | It is a kind of to hold the concrete water absorption rate test device for carrying action direction in parallel |
| CN110017764A (en) * | 2019-04-25 | 2019-07-16 | 黄河水利委员会黄河水利科学研究院 | It is a kind of difference confining pressure under the conditions of lateral deformation measurement method |
| CN110879129A (en) * | 2019-11-05 | 2020-03-13 | 昆明理工大学 | Device for testing influence of pipeline deformation on liquid flow in closed-loop pressure system |
| CN111337412A (en) * | 2020-04-16 | 2020-06-26 | 宿州学院 | Multifunctional automatic flexible wall penetration tester and testing method thereof |
| CN114414375A (en) * | 2022-01-21 | 2022-04-29 | 武汉大学 | Drainage rate controllable type rockfill material lateral confinement compression test device and method |
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