CN106771615B - A kind of soil body electrical conductance and permeability multipurpose test system and test method - Google Patents
A kind of soil body electrical conductance and permeability multipurpose test system and test method Download PDFInfo
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- CN106771615B CN106771615B CN201611054971.XA CN201611054971A CN106771615B CN 106771615 B CN106771615 B CN 106771615B CN 201611054971 A CN201611054971 A CN 201611054971A CN 106771615 B CN106771615 B CN 106771615B
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- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 239000002689 soil Substances 0.000 title claims abstract description 35
- 230000035699 permeability Effects 0.000 title claims abstract description 18
- 238000010998 test method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229910052802 copper Inorganic materials 0.000 claims abstract description 27
- 239000010949 copper Substances 0.000 claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 239000004575 stone Substances 0.000 claims abstract description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 230000008595 infiltration Effects 0.000 claims description 7
- 238000001764 infiltration Methods 0.000 claims description 7
- 239000011800 void material Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 3
- 230000003252 repetitive effect Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 12
- 238000007789 sealing Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/04—Investigating osmotic effects
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of soil body electrical conductance and permeability multipurpose test systems, including agent set, supporting platform seat, water flow conveyances and collection device, agent set includes main cylinder, upper secondary cylinder and lower secondary cylinder, upper pair cylinder and lower secondary cylinder pass through acrylic splicing part with main cylinder respectively and connect, and are filled with permeable stone in upper pair cylinder and lower secondary cylinder；Sample is placed in main cylinder, sample is hit in tangible main cylinder by hammer layering, copper net electrode is installed on two end faces up and down of sample, it is pre-buried on the inner wall of main cylinder that there are two copper band electrodes, it is embedded with three pairs of copper wire electrodes at equal intervals in the axial direction in main cylinder, all electrodes are connect with electrical conductance measuring system.The present invention in conjunction with permeability coefficient tester, realizes the partial structurtes of electrical conductance and permeability multipurpose test system by the type selecting of material, a variety of distribution modes of electrode, enables that the test device is more accurate, permeance property convenient and that efficiently measure the soil body.
Description
Technical field
The present invention relates to soil body electrical conductance and permeability multipurpose test system and test methods, belong to the infiltration of porous media
Saturating performance test and electrical conductance the field of test technology.
Background technique
Earthquake is a kind of natural calamity of burst, and the casualties and property loss having resulted in are unable to estimate.China is
The multiple country of a earthquake, according to statistics, China have 41% territory, more than half city be located at 7 degree of basic earthquake intensity and
Above area.Sand liquefaction is a kind of universal Earthquake damages in earthquake, and sand liquefaction has resulted in huge loss and forces
People carry out in-depth study to it.For liquefaction process along with flowing, that is, seepage flow of pore water, the country has scholar to study
Soil conductivity feature, we are introduced into soil conductivity measuring technology in liquefaction research, and it is relevant that foreign countries have scholar to do
Research, but it does not account for influence of the seepage flow to electrical conductance, in order to preferably study the mechanism of sand liquefaction, studies the infiltration of the soil body
The coupling of saturating field and electric field, inquires into the relationship of the two.A kind of device that can survey soil body penetration performance and electrical conductance simultaneously is invented.
Currently, 70 type lysimeters are used in constant head permeability test substantially, mainly by infiltration component and hitting real part part
Composition, there is following drawback.The material of cylinder mostly uses metal material to cannot be used for the test of electrical conductance, and barrel is opaque, nothing
The observation of method observation sample uniformity；Specimen finish and height are bigger excessively coarse with wooden mallet compacting process, sample packed uniform
Property is difficult to ensure；In sample saturation process, tongs are inflexible to the control of water supplying pipe, can not preferable Control Assay saturation
Speed and reduce sample is washed away；Water flow first passes through pressure tap in sample, then through copper wire cloth to pressure-measuring pipe, be easy to cause survey
Hole plug is pressed, especially more easily there is a situation where pressure taps to block when sample is Extra-fine sand sample.Existing interior electrical conductance
Test experiments, the method that electrode mostly uses insertion can generate disturbance to sample, and the export of electrode connection usually can be to sample
It causes disturbance or influences the leakproofness of instrument.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of soil body electrical conductance and infiltration
Property multipurpose test system and test method, pass through the size of control main cylinder, resist real ability and material, electrical conductance is transformed
With the partial structurtes of permeability multipurpose test system, enable the test device it is more accurate, it is convenient and efficiently measurement soil
The permeance property of body and its vertical and lateral electrical conductance.
Technical solution: in order to solve the above technical problems, a kind of soil body electrical conductance of the invention and permeability multifunctional testing
Device, including agent set, supporting platform seat, water flow conveyances and collection device, the agent set include main cylinder, upper pair
Cylinder and lower secondary cylinder, the upper secondary cylinder and lower secondary cylinder pass through acrylic splicing part with main cylinder respectively and connect, and the upper secondary cylinder is under
Permeable stone is filled in secondary cylinder；The supporting platform seat includes roof supporting, support baseboard and studdle, the roof supporting
It is connected between support baseboard by studdle, small supporting table is installed on support baseboard, is equipped in small supporting table
Lower pair cylinder；The water flow conveyances include the water supply container being located on roof supporting, and water supply container passes through water supplying pipe and upper pair
Cylinder connection, is equipped with inlet valve on water supplying pipe；The collection device includes regulation pipe and water flow collection vessel, the adjusting
It manages and is connect with the bottom of lower secondary cylinder, regulation pipe is hung on studdle by adjusting rod；It is placed with sample in the main cylinder, tries
Sample is hit in tangible main cylinder by hammer layering, copper net electrode is equipped on two end faces up and down of sample, in main cylinder
Pre-buried on inner wall there are two copper band electrodes, are embedded with three pairs of copper wire electrodes, copper mesh at equal intervals in the axial direction in main cylinder
Electrode, copper band electrode and copper wire electrode are connect with electrical conductance measuring system.
Preferably, the main cylinder is set at equal intervals in the axial direction there are three pressure-measuring pipe interface, each pressure-measuring pipe is connect
Mouth is connect with the pressure-measuring pipe with scale plate.
Preferably, being equipped with fritter permeable stone in the pressure-measuring pipe interface.
Preferably, being equipped with circular cross-section annular groove and copper mesh electricity at the top of the bottom of the upper secondary cylinder and lower secondary cylinder
Pole card slot, is embedded with waterproof grommet in circular cross-section annular groove, and copper net electrode is stuck in copper net electrode card slot.
Preferably, being equipped with gap at the top of the upper secondary cylinder.
A kind of test method of above-mentioned soil body electrical conductance and permeability multipurpose test system, comprising the following steps:
Step 1) installs main cylinder and lower secondary cylinder, is connected to water supplying pipe and regulation pipe, opens inlet valve, lower pair cylinder is under
It is filled with water at the top of lower secondary cylinder upwards, closes inlet valve；
Step 2) takes a certain amount of sample drying, and weighing is accurate to 0.1g, and sample is layered and is packed into main cylinder, every thickness 3cm,
Actual arrival certain thickness is hit with hammer, reaches the void ratio of test requirements document；
After every layer of sample of step 3) installs, crack inlet valve is saturated sample, when the water surface is slightly higher than sample top surface,
Inlet valve is closed, after the last layer sample is compacted, secondary cylinder is first installed, then adds water saturated sample, work as spilling water
When mouth has water spilling, inlet valve is closed；
Copper net electrode, copper band electrode and copper wire electrode connect with additional electrical conductance measurement system step 4) respectively in order
It connects, opens the electrical conductance of measurement system testing saturated sample, and check whether each electrode connects well；
Step 5) is stood several minutes, is checked whether each piezometric level flushes with gap, is checked that each interface, stitching portion are
No leak；
Step 6) is fixed on regulation pipe on adjusting rod, and its position is made to be slightly above gap, then separately water supplying pipe with
Water supplying pipe and upper secondary cylinder connection are opened inlet valve by regulation pipe, and water is allowed to inject upper secondary cylinder by top；
Step 7) reduces adjusting rod, causes water-head, water passes through sample, flows out through regulation pipe, steady to piezometric level
After fixed, the water level of pressure-measuring pipe is recorded, the water-head between each pressure-measuring pipe is calculated；
Step 8) starts stopwatch, while picking up the amount of seepage through certain time with water flow collection vessel, and be repeated several times；
The temperature of water, records and finds out temperature-averaging in step 9) thermometer measure water supply container and water flow collection vessel
Value；
Step 10) repetitive operation step 7) is to 9)；
Step 11) handles experimental data, calculates the infiltration coefficient under the prepared void ratio, handles and measure in flow event
Soil conductivity value.
In the present invention, the design of agent set has fully considered insulation, has prevented blending sealing, and wherein antiseepage includes preventing water
With the loss of the soil body；It all electrode interfaces, water flow inlet and outlet, the splicing between component and is all done with the connection of other component
Watertightly sealed processing.All electrodes are all embedded or are embedded in barrel, avoid disturbance of the electrode to sample, and electrode has pair
The electrode interface answered protects the sealing waterproofness of whole device.In order to enable electrode pre-buried in cylinder well with it is additional
The connection of electrical conductance measuring system, all electrodes, which all design, corresponding electrode interface, pre-buried electrode in electrode connection and cylinder
Connection, directly by cylinder inner wall, and the sealing waterproof connector by being set on drum outer wall forms electrode interface.
In the present invention, the design of the system takes full advantage of these three electrodes respectively because of applicable model that shape difference has
It encloses and respective shapes of advantage, under the premise of meeting test request, pre-buried most suitable electrode type, using copper net electrode
The normal seepage flow of sample is not influenced；It is the disturbance avoided to soil using pre-buried copper band electrode and copper wire electrode, avoids each
What electrical conductance was tested between a measurement direction and each layer interferes with each other, and avoids electrode spacing in sample preparation and test process
It changes；Above-mentioned electrode all meets easy for installation and test request condition.
The utility model has the advantages that the present invention realizes soil body electrical conductance and infiltrative joint test, soil body electrical conductance and permeability
Multipurpose test system is tested soil body electrical conductance under seepage effect and is tested, and by changing the connection of water supplying pipe, water flow may be implemented
When from top to bottom being permeated from the bottom to top with water flow, the test of soil body electric conductivity；The present apparatus can individually measure the permeance property of the soil body
Or electrical conductance this two, and this two can be measured simultaneously；The test of electrical conductance includes horizontal and vertical both direction, test method
Including two methods of four electrode method and two electrode method；Solve the existing soil body electrical conductance and permeability being previously mentioned in background technique
Some problems in test make test become more accurate, convenient and efficient.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the connection schematic diagram of pressure-measuring pipe；
Fig. 3 is the structural schematic diagram of lower secondary cylinder；
Fig. 4 is the structural schematic diagram of upper secondary cylinder.
Specific embodiment
As shown in Figures 1 to 4, a kind of soil body electrical conductance of the invention and permeability multipurpose test system, including support
Pedestal, agent set and water flow conveying and collection device.Supporting platform seat includes roof supporting 4, support baseboard 24, studdle
5, small supporting table 19 and adjusting rod 23, wherein roof supporting 4 and support baseboard 24 pass through the four connection formation of screw rod 5, one space
Supporting platform seat；Adjusting rod 23 is mounted on studdle 5, and small supporting table 19 is bonded on support baseboard 24.Agent set packet
Main cylinder 11, upper secondary cylinder 7, lower secondary cylinder 16 and hammer 29 are included, wherein upper pair cylinder 7 and lower secondary cylinder 16 pass through Asia with main cylinder 11 respectively
Gram force splice 9 connects, and agent set is placed in small supporting table 19 and is fixed on support baseboard 24 by screw rod, hammer 29
For hitting real sample.Water flow conveyances and collection device include that water supply container 1, water supplying pipe 3, regulation pipe 18 and water flow are collected
Container 20, wherein water supply container 1 is placed on roof supporting 4, is connected by water supplying pipe 3 with the water flow inlet and outlet 6 of upper secondary cylinder 7, water
Stream collection vessel 20 is placed on support baseboard 24, is connected by regulation pipe 18 with the water flow inlet and outlet 6 of lower secondary cylinder 16.
In invention, agent set is to be distinguished by upper secondary cylinder 7 and lower secondary cylinder 16 by the acrylic splicing part 9 of sealing waterproof
Composition is connect with main cylinder 11；Sample is prepared in main cylinder 11 by hammer 29, gasket can also be added, in conjunction with existing hand
It is prepared by dynamic compaction test apparatus；The material of main cylinder 11, upper secondary cylinder 7 and lower secondary cylinder 16 uses the acrylic material of insulation transparent, shape
For the small-sized circle ring column of equal diameter equal thickness, thickness, which meets, resists the requirement that hammer 29 generates maximum lateral pressure.It supplies water
Container 1, water flow collection vessel 20 and upper secondary cylinder 7, lower secondary cylinder 16 the order of connection can be adjusted according to requirement of experiment, i.e. seepage flow
Can the test of soil body electrical conductance under different seepage directions may be implemented from top to bottom or from top to bottom in direction.
In the present invention, pre-buried on the inner wall of main cylinder 11 there are two copper band electrodes 12, and open and erect there are two corresponding
To electrode interface 13, opened at equal intervals on an axis direction of main cylinder 11 there are three pressure-measuring pipe interface 14, it is pre- in interface
Being embedded with fritter permeable stone 26 prevents the soil body from flowing into and blocks pressure-measuring pipe 21, has scale plate 22 at interface external connection three
Pressure-measuring pipe 21, it is equidistant on another axis direction to be provided with three pairs of transverse electrode interfaces 14 and be embedded with copper wire work wherein
For electrode.Lower pair cylinder 16 bottom is provided with a water flow inlet and outlet 6, and top, which is scratched, circular cross-section annular groove 27 and pre-buried wherein
Waterproof grommet is also provided with copper net electrode card slot and is embedded with copper net electrode 10 wherein, and is provided with corresponding erect in side wall
To electrode interface 13, it is filled with permeable stone 8 in lower pair cylinder 16, plays support and buffered water stream.One is provided at the top of upper pair cylinder 7
Water flow inlet and outlet 6, bottom, which is scratched, circular cross-section annular groove 27 and wherein pre-buried waterproof grommet, is also provided with copper net electrode card
Slot is simultaneously embedded with copper net electrode 10 wherein, and is provided with corresponding vertical electrode interface 13 in side wall, is filled in upper pair cylinder 7
Permeable stone 8 plays buffering flow action.
In the present invention, the design of agent set has fully considered insulation, has prevented blending sealing, and wherein antiseepage includes preventing water
With the loss of the soil body；All electrode interfaces 13,14, the splicing between water flow inlet and outlet 6, component and the connection with other component
Watertightly sealed processing is all done.All electrodes are all embedded or are embedded in barrel, avoid disturbance of the electrode to sample, electrode
There is corresponding electrode interface 13,14, protects the sealing waterproofness of whole device.
In the present invention, in order to enable electrode pre-buried in cylinder to connect well with additional electrical conductance measuring system, institute
Some electrodes, which all design, corresponding electrode interface 13 or electrode interface 14, and electrode connection is connect with electrode pre-buried in cylinder,
Directly by cylinder inner wall, and the sealing waterproof connector 28 by being set on drum outer wall forms electrode interface 13,14.
Embodiment: shown in referring to Fig.1, soil body electrical conductance and permeability multipurpose test system of the invention test seepage flow
Acting on lower soil body electrical conductance test, the specific method is as follows:
Step 1) installs device by Fig. 1, and upper pair cylinder 7 not installed, and connection water supplying pipe 3 and regulation pipe 18 open water inlet
Valve 2 is filled with water to lower 16 top of secondary cylinder by the water flow inlet and outlet 6 of lower secondary cylinder 16 upwards, closes inlet valve 2；
Step 2) takes a certain amount of drying sample, and weighing is accurate to 0.1g, and sample is layered and is packed into main cylinder 11, every thickness
3cm hits actual arrival certain thickness with hammer 29, to control its void ratio, obtains the void ratio of test requirements document；
After every layer of sample of step 3) installs, crack inlet valve 2 is saturated sample, when the water surface is slightly higher than sample top surface,
Inlet valve 2 is closed, after the last layer sample is compacted, secondary cylinder 7 is first installed, then adds water saturated sample, when excessive
When there is water spilling at the mouth of a river 25, inlet valve 2 is closed；
Step 4) in order respectively connect electrode interface 13,14 with additional electrical conductance measurement system, opens measurement system
Unified test tries the electrical conductance of saturated sample, and checks whether each electrode connects well；
Step 5) is stood several minutes, is checked whether each 21 water level of pressure-measuring pipe flushes with gap 25, is checked each interface, splicing
Place whether leak；
Step 6) is fixed on regulation pipe 18 on adjusting rod 23, and its position is made to be slightly above gap 25, then separately supplies
The water flow of water supplying pipe 3 and upper secondary cylinder 7 is imported and exported 6 connection, opens inlet valve 2, allow water by top by water pipe 3 and regulation pipe 18
Secondary cylinder 7 in injection；
Step 7) reduces adjusting rod 23, causes water-head, and water passes through sample, flows out through regulation pipe 18；To pressure-measuring pipe 21
After stable level, the water level of pressure-measuring pipe 21 is recorded, the water-head between each pressure-measuring pipe 21 is calculated；
Step 8) starts stopwatch, while picking up the amount of seepage through certain time with water flow collection vessel 20, and repeat several
It is secondary；
The temperature of water, records and finds out temperature in step 9) thermometer measure water supply container 1 and water flow collection vessel 20
Spend average value；
Step 10) repetitive operation step 7) is to 9)；
Step 11) handles experimental data, calculates the infiltration coefficient under prepared void ratio, measures in processing flow event
Soil conductivity value.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. a kind of soil body electrical conductance and permeability multipurpose test system, it is characterised in that: including agent set, supporting platform seat,
Water flow conveyances and collection device, the agent set include main cylinder, upper secondary cylinder and lower secondary cylinder, the upper secondary cylinder and lower pair
Cylinder passes through acrylic splicing part with main cylinder respectively and connect, and is filled with permeable stone in the upper secondary cylinder and lower secondary cylinder；The branch
Supportting pedestal includes roof supporting, support baseboard and studdle, passes through studdle between the roof supporting and support baseboard
Connection, is equipped with small supporting table on support baseboard, and lower secondary cylinder is equipped in small supporting table；The water flow conveyances include
Water supply container on roof supporting, water supply container are connect with upper secondary cylinder by water supplying pipe, are equipped on water supplying pipe into water
Valve；The collection device includes regulation pipe and water flow collection vessel, and the regulation pipe is connect with the bottom of lower secondary cylinder, regulation pipe
It is hung on studdle by adjusting rod；Water supply container, water flow collection vessel and the order of connection of upper secondary cylinder, lower secondary cylinder are adjustable
It is whole, so that the direction of seepage flow is realized the test of soil body electrical conductance under different seepage directions from top to bottom or from top to bottom；The master
Sample is placed in cylinder, sample is hit in tangible main cylinder by hammer layering, is equipped on two end faces up and down of sample
Copper net electrode, pre-buried on the inner wall of main cylinder there are two copper band electrodes, pre-buried at equal intervals in the axial direction in main cylinder
There are three pairs of copper wire electrodes, copper net electrode, copper band electrode and copper wire electrode are connect with electrical conductance measuring system, the upper secondary cylinder
It is equipped with circular cross-section annular groove and copper net electrode card slot at the top of bottom and lower secondary cylinder, it is pre- in circular cross-section annular groove
It is embedded with waterproof grommet, copper net electrode is stuck in copper net electrode card slot；The main cylinder is equipped with three at equal intervals in the axial direction
A pressure-measuring pipe interface, each pressure-measuring pipe interface are connect with the pressure-measuring pipe with scale plate.
2. soil body electrical conductance according to claim 1 and permeability multipurpose test system, it is characterised in that: the survey pressure
Fritter permeable stone is equipped in interface tube.
3. soil body electrical conductance according to claim 1 and permeability multipurpose test system, it is characterised in that: the upper pair
Cylinder top is equipped with gap.
4. a kind of test method of soil body electrical conductance and permeability multipurpose test system as described in claim 1, feature
It is, comprising the following steps:
Step 1) installs main cylinder and lower secondary cylinder, is connected to water supplying pipe and regulation pipe, opens inlet valve, lower pair cylinder is from bottom to top
It is filled with water at the top of lower secondary cylinder, closes inlet valve；
Step 2) takes a certain amount of sample drying, and weighing is accurate to 0.1g, and sample is layered and is packed into main cylinder, every thickness 3cm, with hitting
Hammering is real；
After every layer of sample of step 3) installs, crack inlet valve is saturated sample, when the water surface is slightly higher than sample top surface, closes
Inlet valve after the last layer sample is compacted, first installs secondary cylinder, saturated sample is then added water, when gap has
When water overflows, inlet valve is closed；
Copper net electrode, copper band electrode and copper wire electrode are connect with additional electrical conductance measurement system step 4) respectively in order, are beaten
The electrical conductance of measurement system testing saturated sample is opened, and checks whether each electrode connects well；
Step 5) is stood several minutes, is checked whether each piezometric level flushes with gap, is checked whether each interface, stitching portion leak
Water；
Step 6) is fixed on regulation pipe on adjusting rod, and its position is made to be slightly above gap, then separately water supplying pipe and adjusting
Water supplying pipe and upper secondary cylinder connection are opened inlet valve by pipe, and water is allowed to inject upper secondary cylinder by top；
Step 7) reduces adjusting rod, causes water-head, and water passes through sample, flows out through regulation pipe, after pressure-measuring pipe stable level,
The water level for recording pressure-measuring pipe, calculates the water-head between each pressure-measuring pipe；
Step 8) starts stopwatch, while picking up the amount of seepage through certain time with water flow collection vessel, and be repeated several times；
The temperature of water, records and finds out temperature averages in step 9) thermometer measure water supply container and water flow collection vessel；
Step 10) repetitive operation step 7) is to 9)；
Step 11) handles experimental data, calculates the infiltration coefficient under prepared void ratio, handles the soil measured in flow event
Electrical conductance value.
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| CN109269959A (en) * | 2018-11-15 | 2019-01-25 | 重庆大学 | A kind of large size water level controllable type soil permeability coefficient measurement device and measuring method |
| CN110018097B (en) * | 2019-03-27 | 2023-10-20 | 哈尔滨工业大学（深圳） | Bidirectional soil seepage test device and test method for multilayer detachable sample preparation and sampling |
| CN110108768A (en) * | 2019-05-23 | 2019-08-09 | 上海应用技术大学 | Soil sample electrical parameter experimental observation device under liquid flowing |
| CN110108767A (en) * | 2019-05-23 | 2019-08-09 | 上海应用技术大学 | Measure the device of liquid sample electrical parameter |
| CN110672497A (en) * | 2019-11-08 | 2020-01-10 | 宁夏大学 | Multifunctional infiltration piping tester |
| CN110865017B (en) * | 2019-12-26 | 2024-06-18 | 华侨大学 | Permeability tester |
| CN111024587B (en) * | 2019-12-31 | 2024-09-20 | 重庆交通大学 | Device and method for testing flowing potential of soil-stone mixture |
| CN111924927A (en) * | 2020-08-04 | 2020-11-13 | 安徽省环境科学研究院 | Method for treating nitrite in underground water based on PRBS technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3923954B2 (en) * | 2004-03-31 | 2007-06-06 | 飛島建設株式会社 | Consolidation permeability test apparatus and test method |
| CN201348601Y (en) * | 2008-12-31 | 2009-11-18 | 长沙理工大学 | Pressure permeameter |
| CN201876408U (en) * | 2010-11-02 | 2011-06-22 | 同济大学 | Multifunctional permeameter |
| CN104360164A (en) * | 2014-12-13 | 2015-02-18 | 太原理工大学 | Device and method for testing impedance of soil mass under different temperature paths |
| CN104655468A (en) * | 2015-03-17 | 2015-05-27 | 河海大学 | Sample preparation device and sample preparation method for sand-soil contact surface test sample as well as osmotic coefficient determination method |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3923954B2 (en) * | 2004-03-31 | 2007-06-06 | 飛島建設株式会社 | Consolidation permeability test apparatus and test method |
| CN201348601Y (en) * | 2008-12-31 | 2009-11-18 | 长沙理工大学 | Pressure permeameter |
| CN201876408U (en) * | 2010-11-02 | 2011-06-22 | 同济大学 | Multifunctional permeameter |
| CN104360164A (en) * | 2014-12-13 | 2015-02-18 | 太原理工大学 | Device and method for testing impedance of soil mass under different temperature paths |
| CN104655468A (en) * | 2015-03-17 | 2015-05-27 | 河海大学 | Sample preparation device and sample preparation method for sand-soil contact surface test sample as well as osmotic coefficient determination method |
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