CN109613067A - Electric osmose drainage test system in a kind of unsaturation subgrade soils room - Google Patents
Electric osmose drainage test system in a kind of unsaturation subgrade soils room Download PDFInfo
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- CN109613067A CN109613067A CN201910020018.0A CN201910020018A CN109613067A CN 109613067 A CN109613067 A CN 109613067A CN 201910020018 A CN201910020018 A CN 201910020018A CN 109613067 A CN109613067 A CN 109613067A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
Abstract
Electric osmose drainage test system, belongs to subgrade drainage technical field in a kind of unsaturation subgrade soils room, solves the problems, such as that existing indoor electric osmose drainage test system is not suitable for unsaturation subgrade soils.The pilot system: test soil sample be fixed on soil sample fix and drainage cell in, the latter is built in test cabin.D.C. regulated power supply applies voltage to the both ends of test soil sample by first electrode and second electrode.Draining phasor measurement unit is used to collect the water that test soil sample is discharged and the volume and quality for measuring discharge water.Volumetric water content of the soil sample volumetric water content detection unit for scheduled multiple soil layers to be measured in real-time detection test soil sample.Soil sample potential acquisition unit is used to determine the voltage at the soil layer both ends to be measured according to the high potential data and low potential data that each of detect soil layer to be measured.For warehouse Temperature and Humidity Control unit for making the air humidity inside and outside test cabin reach balance, the temperature that output adjusts gas is equal to the corresponding dew-point temperature of real-time temperature in test cabin.
Description
Technical field
The present invention relates to a kind of drainage by electroosmosis pilot systems, belong to subgrade drainage technical field.
Background technique
In the 1930s, drainage by electroosmosis method is applied to the reinforcing of soft soil foundation by German scholar Casagrande for the first time
And satisfactory effect is achieved, this promotes subsequent researcher to expand extensively and go deep into the drainage by electroosmosis of soft soil foundation
Research, indoor model test relevant to soft soil foundation drainage by electroosmosis, live full scale test and engineering example never between
Break and does not stop to advance.So far, drainage by electroosmosis method early has become a kind of common soft soil foundation reinforcing method.
However, the reinforcings for being confined to foundation in saturated soft soil at present of drainage by electroosmosis method, rarely have for unsaturated soil ground more
It reinforces, is more not used for unsaturation subgrade drainage.The moisture enriched layer that current seasonal frost region roadbed is formed after Frozen-thawed cycled because
Have the characteristics that water content is big, execution is significant and is difficult to a great problem that white-out is controlled as seasonal frost region subgrade defect.Such as
Drainage by electroosmosis method self-saturation reinforced soft soil ground field can be introduced unsaturation subgrade drainage field by fruit, will be non-by electroosmosis
It is saturated moisture discharge extra in roadbed, then can efficiently control the humidity conditions of roadbed, be obviously improved the work shape of roadbed
State, and then substantially extend the service life of roadbed.
Engineer application need to be based on theoretical research.Therefore, the drainage by electroosmosis research for carrying out unsaturated soil becomes when business
It is anxious.Before drainage by electroosmosis method is applied to practical unsaturation subgrade engineering, need first to carry out indoor model test sufficiently to slap
The Moisture Transfer Rule and electrical parameter changing rule when electric osmose occurs for unsaturated soil are held, work of the electric osmose in unsaturated soil is specified
With mechanism, drainage by electroosmosis is applied to the effect of unsaturated soil by verifying.
Electric osmose drainage test needs are a set of in progress unsaturated soil room is able to satisfy its test objective experimental rig, guarantees electric osmose
Drainage test rationally, can be carried out accurately, to obtain the conclusion of science.Existing interior electric osmose drainage test system is based on
Moisture content is high, infiltration coefficient is low and the apparent saturated soft soil of drainage by electroosmosis effect and designs.Existing interior electric osmose drainage test
System generallys use the mode of collection cathode draining to determine displacement of soil body during electric osmose, passes through measurement pore pressure and prison
Sedimentation and deformation is surveyed to determine the degree of consolidation, while monitoring potential change to measure the ability to work of electrode, it is therefore intended that Electrode
The influence of material, step mode, soil sample property to saturation drainage by electroosmosis, this is with the saturation soil sample of high-moisture percentage, low-permeability
Inevitable outcome as subjects.
However, existing interior electric osmose drainage test system is not suitable for unsaturated soil but, this is because: currently to saturation
The research of weak soil drainage by electroosmosis usually integrally carries out drainage by electroosmosis effect analysis to test soil sample using displacement as evaluation index, or
Person measures the moisture content of test each layer of soil sample by way of carrying out regular Stratified Sampling drying to test soil sample, to carry out water
Divide migration analysis.The former has ignored the problem of moisture spatial distribution differences, this difference is especially significant in unsaturated soil.Afterwards
Person then can failure test soil sample integrality, can not accomplish continuously to measure.
Summary of the invention
The present invention is to solve the problems, such as that existing indoor electric osmose drainage test system is not suitable for unsaturation subgrade soils, is proposed
Electric osmose drainage test system in a kind of unsaturation subgrade soils room.
Electric osmose drainage test system includes that test cabin 1, soil sample are fixed and arranged in unsaturation subgrade soils of the present invention room
Water unit, draining phasor measurement unit, voltage-drop loading unit, soil sample volumetric water content detection unit, soil sample potential acquisition unit and
Warehouse Temperature and Humidity Control unit；
Soil sample is fixed and drainage cell is arranged in test cabin 1, which includes soil sample sleeve 2, the first permeable stone 3, the
Two permeable stones 4, water drain funnel 5, the first positioning splint 6, the second positioning splint 7, spacer pad 8 and positioning splint retention mechanism；
Soil sample sleeve 2 is the columnar structured of upper/lower terminal opening, and the first permeable stone 3, test soil sample and second are permeable
Stone 4 is successively arranged in soil sample sleeve 2 from top to down and is in close contact with the inner tube wall of soil sample sleeve 2；
The first positioning splint 6 middle part, offer ventilative through hole from its top surface to bottom surface, spacer pad 8 is circular ring shape
Structure, spacer pad 8 and the first positioning splint 6 are successively stacked on from bottom to up on the first permeable stone 3, spacer pad 8 and soil
The inner tube wall of sample sleeve 2 is in close contact and the upper end exceeds the upper port of soil sample sleeve 2；
The lower port of the large port of water drain funnel 5 from soil sample sleeve 2 is protruded into wherein and is in close contact with the second permeable stone 4,
The inner tube wall of outer wall and soil sample sleeve 2 at the large port of water drain funnel 5 is in close contact, and the portlet of water drain funnel 5 is passed through vertically
Wear the second positioning splint 7；
First positioning splint 6 is pressed from both sides in the axial direction of soil sample sleeve 2 with the second positioning splint 7 by positioning splint retention mechanism
Tightly；
Voltage-drop loading unit includes D.C. regulated power supply 9, first electrode 20 and second electrode 21, first electrode 20 and second
Electrode 21 is disc structure, and multiple drainage holes, first electrode 20 and second electrode are evenly arranged in second electrode 21
21 are electrically connected with the anode and cathode of D.C. regulated power supply 9 respectively, and be separately positioned on the first permeable stone 3 with test soil sample,
It tests between soil sample and the second permeable stone 4；
Draining phasor measurement unit is used to collect the water that test soil sample is discharged and the volume and quality for measuring discharge water；
Volume of the soil sample volumetric water content detection unit for scheduled multiple soil layers to be measured in real-time detection test soil sample
Moisture content, and store the volumetric water content data detected；
Soil sample potential acquisition unit for acquiring in test soil sample the high potential of scheduled multiple soil layers to be measured and low in real time
Current potential, and determine according to the high potential data and low potential data that each of detect soil layer to be measured the electricity at the soil layer both ends to be measured
Pressure；
Warehouse Temperature and Humidity Control unit keeps the air in test cabin 1 wet for adjusting the air humidity in test cabin 1 in real time
Degree is equal to the air humidity outside test cabin 1, is also used to adjust the temperature in test cabin 1, the tune conveyed into test cabin 1 in real time
The temperature of solar term is equal to the corresponding dew-point temperature of real-time temperature in test cabin 1.
As preferably, level is installed with shelf 10 in test cabin 1, and the intermediate region of shelf 10 is set up and down
Set, shelf 10 by test cabin 1 be divided into from top to bottom soil sample fix and drainage cell place position and draining phasor measurement unit place
Storehouse；
Draining phasor measurement unit includes graduated cylinder 11 and electronic balance 12, and electronic balance 12 is placed on the bottom plate of test cabin 1,
Graduated cylinder 11 is placed on the objective table of electronic balance 12；
Second positioning splint 7 is mounted on shelf 10, and the portlet of water drain funnel 5 enters row through the perforation region of shelf 10
Measure of water unit place position, and protrude into graduated cylinder 11；
The upper port sealed set of graduated cylinder 11；
Electronic balance 12 is used for according to directly measuring the total mass number of graduated cylinder 11 and water accordingly and preset graduated cylinder quality
The quality of test soil sample water be discharged is calculated and be shown in data in real time.
As preferably, positioning splint retention mechanism includes the first fastening bolt 13, the second fastening bolt, third fastening
Bolt, the 4th fastening bolt 14 and the first fastening nut~the 4th fastening nut；
The head of the 13~the 4th fastening bolt 14 of first fastening bolt is in close contact with the bottom surface of the second positioning splint 7,
The end of thread of the 13~the 4th fastening bolt 14 of first fastening bolt sequentially passes through the second positioning splint 7 and the first positioning splint 6,
And just past the first positioning splint 6；
First fastening nut~the 4th fastening nut is separately positioned on the 13~the 4th fastening bolt 14 of the first fastening bolt
On the end of thread.
As preferably, D.C. regulated power supply 9 is adjustable D. C regulated, can show current output voltage and stream
Through the amplitude for testing the electric current of soil sample.
As preferably, soil sample volumetric water content detection unit includes multiple moisture sensors 15 and humidity collector
16；
Multiple moisture sensors 15 are respectively used to the volumetric water content of the multiple soil layer to be measured of real-time detection；
Humidity collector 16 is used to acquire what multiple moisture sensors 15 detected simultaneously according to preset sample frequency
Volumetric water content data.
As preferably, soil sample potential acquisition unit is potential acquisition instrument 17, and potential acquisition instrument 17 includes multipair current potential
Probe 18, multipair potential probes 18 are corresponded with the multiple soil layer to be measured respectively；
Potential acquisition instrument 17 acquires corresponding soil layer to be measured by each pair of potential probes 18 according to preset sample frequency
High potential data and low potential data.
As preferably, warehouse Temperature and Humidity Control unit be constant-temp. and-moisture maintenance 19, constant-temp. and-moisture maintenance 19 with
The inner space of test cabin 1 is connected.
As preferably, test cabin 1 and soil sample sleeve 2 are all made of polymethyl methacrylate materials and are made, and first is fixed
Position clamping plate 6 and the second positioning splint 7 are all made of ambroin and are made, first electrode 20 and second electrode 21 be metal electrode or
Non-metal electrode.
As preferably, the first permeable stone 3 and the second permeable stone 4 are disc structure, and test soil sample is with steady
Determine the cylindrical body of consolidated structure；
The diameter of first permeable stone 3, the diameter of the second permeable stone 4, the outer diameter of the diameter and spacer pad 8 of testing soil sample are equal
It is equal with the internal diameter of soil sample sleeve 2；
Ventilative through hole and spacer pad 8 on first positioning splint 6 are coaxially disposed, and the aperture of the ventilative through hole is less than examination
Test the diameter of soil sample.
As preferably, the production method of soil sample is tested are as follows: Beat numbers are first carried out to soil sample using control height method,
Make soil sample close to saturation by the way of vacuumizing saturation again.
Electric osmose drainage test system in unsaturation subgrade soils of the present invention room collects examination by draining phasor measurement unit
It tests the water that soil sample is discharged and measures the volume and quality of discharge water, tried by soil sample volumetric water content detection unit real-time detection
The volumetric water content of scheduled multiple soil layers to be measured in soil sample is tested, and stores the volumetric water content data detected.With existing room
Electroendosmosis drainage test system is compared, and electric osmose drainage test system can either be with row in unsaturation subgrade soils of the present invention room
Water is that evaluation index integrally carries out drainage by electroosmosis effect analysis to test soil sample, and can make a reservation in real-time detection test soil sample
Multiple soil layers to be measured volumetric water content.Therefore, electric osmose drainage test system in unsaturation subgrade soils of the present invention room
Not only the moisture spatial distribution differences in test soil sample are considered but also can continuously and nondestructively measure the aqueous of test soil sample
Rate.
Detailed description of the invention
It will hereinafter come to arrange electric osmose in unsaturation subgrade soils of the present invention room based on the embodiments and with reference to the accompanying drawings
Water test system is described in more detail, in which:
Fig. 1 is the structural schematic diagram of electric osmose drainage test system in unsaturation subgrade soils room described in embodiment；
Fig. 2 is the perspective view for the soil sample sleeve that embodiment refers to.
Specific embodiment
Electric osmose drainage test system in unsaturation subgrade soils of the present invention room is made below in conjunction with attached drawing further
Explanation.
Embodiment: the present embodiment is explained in detail below with reference to Fig. 1 and Fig. 2.
In unsaturation subgrade soils room described in the present embodiment electric osmose drainage test system include test cabin 1, soil sample fix and
Drainage cell, draining phasor measurement unit, voltage-drop loading unit, soil sample volumetric water content detection unit, soil sample potential acquisition unit
With warehouse Temperature and Humidity Control unit；
Soil sample is fixed and drainage cell is arranged in test cabin 1, which includes soil sample sleeve 2, the first permeable stone 3, the
Two permeable stones 4, water drain funnel 5, the first positioning splint 6, the second positioning splint 7, spacer pad 8 and positioning splint retention mechanism；
Soil sample sleeve 2 is the columnar structured of upper/lower terminal opening, and the first permeable stone 3, test soil sample and second are permeable
Stone 4 is successively arranged in soil sample sleeve 2 from top to down and is in close contact with the inner tube wall of soil sample sleeve 2；
The first positioning splint 6 middle part, offer ventilative through hole from its top surface to bottom surface, spacer pad 8 is circular ring shape
Structure, spacer pad 8 and the first positioning splint 6 are successively stacked on from bottom to up on the first permeable stone 3, spacer pad 8 and soil
The inner tube wall of sample sleeve 2 is in close contact and the upper end exceeds the upper port of soil sample sleeve 2；
The lower port of the large port of water drain funnel 5 from soil sample sleeve 2 is protruded into wherein and is in close contact with the second permeable stone 4,
The inner tube wall of outer wall and soil sample sleeve 2 at the large port of water drain funnel 5 is in close contact, and the portlet of water drain funnel 5 is passed through vertically
Wear the second positioning splint 7；
First positioning splint 6 is pressed from both sides in the axial direction of soil sample sleeve 2 with the second positioning splint 7 by positioning splint retention mechanism
Tightly；
Voltage-drop loading unit includes D.C. regulated power supply 9, first electrode 20 and second electrode 21, first electrode 20 and second
Electrode 21 is disc structure, and multiple drainage holes, first electrode 20 and second electrode are evenly arranged in second electrode 21
21 are electrically connected with the anode and cathode of D.C. regulated power supply 9 respectively, and be separately positioned on the first permeable stone 3 with test soil sample,
It tests between soil sample and the second permeable stone 4；
Draining phasor measurement unit is used to collect the water that test soil sample is discharged and the volume and quality for measuring discharge water；
Volume of the soil sample volumetric water content detection unit for scheduled multiple soil layers to be measured in real-time detection test soil sample
Moisture content, and store the volumetric water content data detected；
Soil sample potential acquisition unit for acquiring in test soil sample the high potential of scheduled multiple soil layers to be measured and low in real time
Current potential, and determine according to the high potential data and low potential data that each of detect soil layer to be measured the electricity at the soil layer both ends to be measured
Pressure；
Warehouse Temperature and Humidity Control unit keeps the air in test cabin 1 wet for adjusting the air humidity in test cabin 1 in real time
Degree is equal to the air humidity outside test cabin 1, is also used to adjust the temperature in test cabin 1, the tune conveyed into test cabin 1 in real time
The temperature of solar term is equal to the corresponding dew-point temperature of real-time temperature in test cabin 1.
Level is installed with shelf 10 in the test cabin 1 of the present embodiment, and the intermediate region of shelf 10 is arranged up and down, shelf
10 by test cabin 1 be divided into from top to bottom soil sample fix and drainage cell place position and draining phasor measurement unit place position；
Draining phasor measurement unit includes graduated cylinder 11 and electronic balance 12, and electronic balance 12 is placed on the bottom plate of test cabin 1,
Graduated cylinder 11 is placed on the objective table of electronic balance 12；
Second positioning splint 7 is mounted on shelf 10, and the portlet of water drain funnel 5 enters row through the perforation region of shelf 10
Measure of water unit place position, and protrude into graduated cylinder 11；
The upper port sealed set of graduated cylinder 11；
Electronic balance 12 is used for according to directly measuring the total mass number of graduated cylinder 11 and water accordingly and preset graduated cylinder quality
The quality of test soil sample water be discharged is calculated and be shown in data in real time.
The positioning splint retention mechanism of the present embodiment includes the first fastening bolt 13, the second fastening bolt, third fastening spiral shell
Bolt, the 4th fastening bolt 14 and the first fastening nut~the 4th fastening nut；
The head of the 13~the 4th fastening bolt 14 of first fastening bolt is in close contact with the bottom surface of the second positioning splint 7,
The end of thread of the 13~the 4th fastening bolt 14 of first fastening bolt sequentially passes through the second positioning splint 7 and the first positioning splint 6,
And just past the first positioning splint 6；
First fastening nut~the 4th fastening nut is separately positioned on the 13~the 4th fastening bolt 14 of the first fastening bolt
On the end of thread.
The D.C. regulated power supply 9 of the present embodiment is adjustable D. C regulated, can show current output voltage and flow through
Test the amplitude of the electric current of soil sample.
The soil sample volumetric water content detection unit of the present embodiment includes multiple moisture sensors 15 and humidity collector 16；
Multiple moisture sensors 15 are respectively used to the volumetric water content of the multiple soil layer to be measured of real-time detection；
Humidity collector 16 is used to acquire what multiple moisture sensors 15 detected simultaneously according to preset sample frequency
Volumetric water content data.
The soil sample potential acquisition unit of the present embodiment is potential acquisition instrument 17, and potential acquisition instrument 17 includes multipair potential probes
18, multipair potential probes 18 are corresponded with the multiple soil layer to be measured respectively；
Potential acquisition instrument 17 acquires corresponding soil layer to be measured by each pair of potential probes 18 according to preset sample frequency
High potential data and low potential data.
The warehouse Temperature and Humidity Control unit of the present embodiment is constant-temp. and-moisture maintenance 19, constant-temp. and-moisture maintenance 19 and test
The inner space in storehouse 1 is connected.
The test cabin 1 and soil sample sleeve 2 of the present embodiment are all made of polymethyl methacrylate materials and are made, the first locating clip
Plate 6 and the second positioning splint 7 are all made of ambroin and are made, and first electrode 20 and second electrode 21 are metal electrode or non-gold
Belong to electrode.
First permeable stone 3 and the second permeable stone 4 of the present embodiment are disc structure, and test soil sample is to press with stable
The cylindrical body of real structure；
The diameter of first permeable stone 3, the diameter of the second permeable stone 4, the outer diameter of the diameter and spacer pad 8 of testing soil sample are equal
It is equal with the internal diameter of soil sample sleeve 2；
Ventilative through hole and spacer pad 8 on first positioning splint 6 are coaxially disposed, and the aperture of the ventilative through hole is less than examination
Test the diameter of soil sample.
The production method of the test soil sample of the present embodiment are as follows: Beat numbers are first carried out to soil sample using control height method, then
Make soil sample close to saturation by the way of vacuumizing saturation.
Fig. 1 is the structural schematic diagram of electric osmose drainage test system in unsaturation subgrade soils room described in the present embodiment, soil sample
For sleeve 2 close to transparent due to being made of polymethyl methacrylate materials, 2 part of soil sample sleeve in figure is actually soil sample
The perspective view of sleeve 2, middle part grey parts are test soil sample.
The internal diameter of the spacer pad 8 of the present embodiment is 1cm smaller than its outer diameter, and the height of spacer pad 8 is greater than the first permeable stone 3
Top surface and soil sample sleeve 2 upper port spacing, played between the first permeable stone 3 and the first positioning splint 6 power transmission work
With the fixed test soil sample of help.
First permeable stone 3 and the second permeable stone 4 of the present embodiment are common permeable stone in centrifugal modeling, are had permeable
The effect of gas and filter effciency test soil sample.
Drainage hole in the second electrode 21 of the present embodiment, aperture are guaranteeing Ying Jinke on the passable basis of moisture
Can be small, pass through and guarantee the integrality of second electrode 21 to avoid soil particle.
The moisture sensor 15 of the present embodiment is humidity sensor, and the specific soil moisture using SMA-100 model passes
Sensor is realized.It is offered on a side tube-wall of soil sample sleeve 2, along its short transverse multiple with 15 shape phase of moisture sensor
The quantity of matched first mounting hole, the first mounting hole is equal with the quantity of moisture sensor 15.Moisture sensor 15
Spacing is set depending on the data volume that the height of test soil sample and research need.Moisture sensor 15 is being installed through first
When the insertion test soil sample of hole, influence of the moisture sensor 15 to water translocation in sample soil sample should be made small as far as possible.
It is offered on another side tube-wall of soil sample sleeve 2, along its short transverse multiple with 18 shape phase of potential probes
The quantity of the second mounting hole matched, the second mounting hole is equal with the quantity of potential probes 18.In order to reduce by 18 pairs of potential probes examinations
The influence of soil sample internal electric field distribution is tested, potential probes 18, which answer as small as possible and insertion depth that should be limited in not, influences moisture content sensing
In the depth bounds that device 15 works.The specific arrangement method of potential probes 18 is depending on studying required data volume.
The funnel that the water drain funnel 5 of the present embodiment should select inner wall smooth degree high.
The humidity collector 16 of the present embodiment is realized using the data collector of WatchDog series.
The constant-temp. and-moisture maintenance 19 of the present embodiment adjusts the air humidity in test cabin 1 in real time, so that inside and outside test cabin 1
Air humidity reach balance, and then avoid the moisture in test soil sample because psychrometric difference is from the top of test cabin 1 to external migration.Constant temperature
The temperature setting of constant moisture culturing box 19 is the corresponding dew-point temperature of real-time temperature in test cabin 1, and such setting is due in electricity
Seep drainage test in, first electrode 20, test soil sample and second electrode 21 can heat release, cause the temperature in test cabin 1 to be higher than
The gaseous state migration of moisture can occur at this time for the temperature outside test cabin 1.It and is test by the temperature setting of constant-temp. and-moisture maintenance 19
The corresponding dew-point temperature of real-time temperature in storehouse 1, then can avoid the generation of this problem.
Electric osmose drainage test system has the advantages that in unsaturation subgrade soils room described in the present embodiment
1, Different electrodes can be studied to having the unsaturation subgrade soils for stablizing consolidated structure to carry out one-dimensional drainage by electroosmosis test
The influence of material, different energization form, different soil sample structures to unsaturation subgrade soils drainage by electroosmosis effect, seek can be used in it is non-
It is saturated the electroosmosis method of subgrade drainage.
2, real-time continuous monitoring is carried out, it can be achieved that right to soil sample different layers position moisture content by using moisture sensor
The distribution of Water Content Tests in Soil Samples over time and space is analyzed during electric osmose, moisture during announcement unsaturated soil electric osmose
Transport.
3, dynamic control is carried out by temperature, humidity of the constant-temp. and-moisture maintenance to test cabin external environment, it can be maximum
Degree prevents the vapour complex during electric osmose, so that soil sample moisture caused by electrode and soil sample are generated heat evaporates to obtain greatly
Inhibit, so that test knot can more precisely disclose the leading water translocation effect of electric osmose.
Although describing the present invention herein with reference to specific implementation method, it should be understood that, these realities
Applying example only is the example of principles and applications.It should therefore be understood that can be permitted exemplary embodiment
More modifications, and can be designed that other arrangements, without departing from spirit of the invention as defined in the appended claims and
Range.It should be understood that different appurtenances can be combined by being different from method described in original claim
It is required that and feature described herein.It will also be appreciated that the feature in conjunction with described in separate embodiments can be used at it
In his embodiment.
Claims (10)
1. electric osmose drainage test system in a kind of unsaturation subgrade soils room, which is characterized in that the drainage by electroosmosis pilot system packet
Include test cabin (1), soil sample is fixed and drainage cell, draining phasor measurement unit, voltage-drop loading unit, the detection of soil sample volumetric water content
Unit, soil sample potential acquisition unit and warehouse Temperature and Humidity Control unit；
Soil sample is fixed and drainage cell setting is in the test cabin (1), the unit include soil sample sleeve (2), the first permeable stone (3),
Second permeable stone (4), water drain funnel (5), the first positioning splint (6), the second positioning splint (7), spacer pad (8) and locating clip
Plate retention mechanism；
Soil sample sleeve (2) is the columnar structured of upper/lower terminal opening, and the first permeable stone (3), test soil sample and second are permeable
Stone (4), which is successively arranged in from top to down in soil sample sleeve (2) and with the inner tube wall of soil sample sleeve (2), to be in close contact；
The first positioning splint (6) middle part, offer ventilative through hole from its top surface to bottom surface, spacer pad (8) is circular ring shape
Structure, spacer pad (8) and the first positioning splint (6) are successively stacked on from bottom to up on the first permeable stone (3), spacer pad
(8) upper port beyond soil sample sleeve (2) with the inner tube wall of soil sample sleeve (2) close contact and the upper end；
The lower port of the large port of water drain funnel (5) from soil sample sleeve (2) is protruded into wherein and is closely connect with the second permeable stone (4)
It touches, the inner tube wall of outer wall and soil sample sleeve (2) at the large port of water drain funnel (5) is in close contact, the small end of water drain funnel (5)
Mouth runs through the second positioning splint (7) vertically；
First positioning splint (6) and the second positioning splint (7) pass through positioning splint retention mechanism in the axial direction of soil sample sleeve (2)
It clamps；
Voltage-drop loading unit includes D.C. regulated power supply (9), first electrode (20) and second electrode (21), first electrode (20) and
Second electrode (21) is disc structure, and multiple drainage holes, first electrode (20) are evenly arranged on second electrode (21)
It is electrically connected respectively with the anode and cathode of D.C. regulated power supply (9) with second electrode (21), and it is permeable to be separately positioned on first
Between stone (3) and test soil sample, test soil sample and the second permeable stone (4)；
Draining phasor measurement unit is used to collect the water that test soil sample is discharged and the volume and quality for measuring discharge water；
Volume of aqueous of the soil sample volumetric water content detection unit for scheduled multiple soil layers to be measured in real-time detection test soil sample
Rate, and store the volumetric water content data detected；
Soil sample potential acquisition unit tests the high potential and low potential of scheduled multiple soil layers to be measured in soil sample for acquiring in real time,
And the voltage at the soil layer both ends to be measured is determined according to the high potential data and low potential data that each of detect soil layer to be measured；
Warehouse Temperature and Humidity Control unit keeps the air in test cabin (1) wet for adjusting the air humidity in test cabin (1) in real time
Degree is equal to the air humidity of test cabin (1) outside, is also used to adjust the temperature in test cabin (1) in real time, defeated into test cabin (1)
The temperature of the adjusting gas sent is equal to the corresponding dew-point temperature of real-time temperature in test cabin (1).
2. electric osmose drainage test system in unsaturation subgrade soils as described in claim 1 room, which is characterized in that in test cabin
(1) interior level is installed with shelf (10), and the intermediate region of shelf (10) is arranged up and down, shelf (10) by test cabin (1) from
It is upper and under be divided into soil sample and fix and drainage cell place position and draining phasor measurement unit place position；
Draining phasor measurement unit includes graduated cylinder (11) and electronic balance (12), and electronic balance (12) is placed on the bottom of test cabin (1)
On plate, graduated cylinder (11) is placed on the objective table of electronic balance (12)；
Second positioning splint (7) is mounted on shelf (10), the portlet of water drain funnel (5) through the perforation region of shelf (10) into
Enter to drain phasor measurement unit place position, and protrudes into graduated cylinder (11)；
The upper port sealed set of graduated cylinder (11)；
Electronic balance (12) is used for according to directly measuring the total mass number of graduated cylinder (11) and water accordingly and preset graduated cylinder quality
The quality of test soil sample water be discharged is calculated and be shown in data in real time.
3. electric osmose drainage test system in unsaturation subgrade soils as claimed in claim 2 room, which is characterized in that positioning splint is tight
Gu mechanism includes the first fastening bolt (13), the second fastening bolt, third fastening bolt, the 4th fastening bolt (14) and first
Fastening nut~the 4th fastening nut；
Bottom surface of the head of first fastening bolt (13)~the 4th fastening bolt (14) with the second positioning splint (7) closely connects
Touching, the end of thread of the first fastening bolt (13)~the 4th fastening bolt (14) sequentially pass through the second positioning splint (7) and first
Positioning splint (6), and just past the first positioning splint (6)；
First fastening nut~the 4th fastening nut is separately positioned on the first fastening bolt (13)~the 4th fastening bolt (14)
On the end of thread.
4. electric osmose drainage test system in unsaturation subgrade soils as claimed in claim 3 room, which is characterized in that DC voltage-stabilizing electricity
Source (9) is adjustable D. C regulated, can show current output voltage and flow through the amplitude of the electric current of test soil sample.
5. electric osmose drainage test system in unsaturation subgrade soils as claimed in claim 4 room, which is characterized in that soil sample volume contains
Water rate detection unit includes multiple moisture sensors (15) and humidity collector (16)；
Multiple moisture sensors (15) are respectively used to the volumetric water content of the multiple soil layer to be measured of real-time detection；
Humidity collector (16) is used to acquire what multiple moisture sensors (15) detected simultaneously according to preset sample frequency
Volumetric water content data.
6. electric osmose drainage test system in unsaturation subgrade soils as claimed in claim 5 room, which is characterized in that soil sample current potential is adopted
Integrate unit as potential acquisition instrument (17), potential acquisition instrument (17) includes multipair potential probes (18), multipair potential probes (18) point
It is not corresponded with the multiple soil layer to be measured；
Potential acquisition instrument (17) acquires corresponding soil layer to be measured by each pair of potential probes (18) according to preset sample frequency
High potential data and low potential data.
7. electric osmose drainage test system in unsaturation subgrade soils as claimed in claim 6 room, which is characterized in that warehouse temperature and humidity
Control unit is constant-temp. and-moisture maintenance (19), and constant-temp. and-moisture maintenance (19) is connected with the inner space of test cabin (1).
8. electric osmose drainage test system in unsaturation subgrade soils as claimed in claim 7 room, which is characterized in that test cabin (1)
It is all made of polymethyl methacrylate materials with soil sample sleeve (2) to be made, the first positioning splint (6) and the second positioning splint (7)
It is all made of ambroin to be made, first electrode (20) and second electrode (21) are metal electrode or non-metal electrode.
9. electric osmose drainage test system in unsaturation subgrade soils as claimed in claim 8 room, which is characterized in that the first permeable stone
(3) and the second permeable stone (4) is disc structure, and test soil sample is with the cylindrical body for stablizing consolidated structure；
The diameter of first permeable stone (3), the second permeable stone (4) diameter, test the diameter of soil sample and the outer diameter of spacer pad (8)
It is equal with the internal diameter of soil sample sleeve (2)；
Ventilative through hole and spacer pad (8) on first positioning splint (6) are coaxially disposed, and the aperture of the ventilative through hole is less than examination
Test the diameter of soil sample.
10. electric osmose drainage test system in unsaturation subgrade soils as claimed in claim 9 room, which is characterized in that test soil sample
Production method are as follows: Beat numbers are first carried out to soil sample using control height method, then make soil sample by the way of vacuumizing saturation
Close to saturation.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929346A (en) * | 2020-08-13 | 2020-11-13 | 辽宁工程技术大学 | Multifunctional electroosmosis experimental instrument and using method thereof |
| WO2021017309A1 (en) * | 2019-07-29 | 2021-02-04 | 石家庄铁道大学 | System and method for continuously and intelligently measuring water content of roadbed in real time |
| CN113218837A (en) * | 2021-04-22 | 2021-08-06 | 江苏科技大学 | Chemical grouting device and test method for soft soil chemical electroosmosis reinforcement test |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050205426A1 (en) * | 2004-03-17 | 2005-09-22 | Han Yang University | Additive injection system for in-situ soil remediation by electrokinetics and method for injecting additive using the system |
| CN105548264A (en) * | 2016-02-01 | 2016-05-04 | 浙江大学 | Indoor pollution soil electro-osmosis drainage reinforcement device |
| CN106436686A (en) * | 2016-10-21 | 2017-02-22 | 南通大学 | Device used for collecting electroosmosis drainage and soft clay foundation treatment device and method |
| CN106525661A (en) * | 2016-10-28 | 2017-03-22 | 中南大学 | Unsaturated soil vaporous water transfer characteristic testing device and testing method thereof |
| CN107132336A (en) * | 2017-05-10 | 2017-09-05 | 北京航空航天大学 | A kind of Simple indoor test instrument for studying soil body aqueous vapor migration characteristic |
-
2019
- 2019-01-09 CN CN201910020018.0A patent/CN109613067A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050205426A1 (en) * | 2004-03-17 | 2005-09-22 | Han Yang University | Additive injection system for in-situ soil remediation by electrokinetics and method for injecting additive using the system |
| CN105548264A (en) * | 2016-02-01 | 2016-05-04 | 浙江大学 | Indoor pollution soil electro-osmosis drainage reinforcement device |
| CN106436686A (en) * | 2016-10-21 | 2017-02-22 | 南通大学 | Device used for collecting electroosmosis drainage and soft clay foundation treatment device and method |
| CN106525661A (en) * | 2016-10-28 | 2017-03-22 | 中南大学 | Unsaturated soil vaporous water transfer characteristic testing device and testing method thereof |
| CN107132336A (en) * | 2017-05-10 | 2017-09-05 | 北京航空航天大学 | A kind of Simple indoor test instrument for studying soil body aqueous vapor migration characteristic |
Non-Patent Citations (8)
| Title |
|---|
| LIUJIANG WANG 等: "Analytical solution for one-dimensional vertical electro-osmotic drainage under unsaturated conditions", 《COMPUTERS AND GEOTECHNICS》 * |
| 兰士刚: "《上海市水利建设工程质量检测》", 31 July 2018, 同济大学出版社 * |
| 刘建民 等: "饱和重塑黄土液化应变发展试验研究", 《江西理工大学学报》 * |
| 潘宏雨 等: "《水文地质学基础》", 31 January 2008, 北京：地质出版社 * |
| 王宁伟 等: "非饱和黏性土室内水平电渗排水试验", 《第21届全国结构工程学术会议论文集第Ⅰ册》 * |
| 石北啸 等: "《筑坝堆石料劣化试验研究》", 31 May 2018, 黄河水利出版社 * |
| 赵强 等: "长期循环荷载作用下粉质黏土动力特性及相关模型修正", 《长江科学院院报》 * |
| 陈章毅 等: "珠江口海洋软土动三轴试验分析", 《华南地震》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021017309A1 (en) * | 2019-07-29 | 2021-02-04 | 石家庄铁道大学 | System and method for continuously and intelligently measuring water content of roadbed in real time |
| CN111929346A (en) * | 2020-08-13 | 2020-11-13 | 辽宁工程技术大学 | Multifunctional electroosmosis experimental instrument and using method thereof |
| CN111929346B (en) * | 2020-08-13 | 2022-09-20 | 辽宁工程技术大学 | Multifunctional electroosmosis experimental instrument and using method thereof |
| CN113218837A (en) * | 2021-04-22 | 2021-08-06 | 江苏科技大学 | Chemical grouting device and test method for soft soil chemical electroosmosis reinforcement test |
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Application publication date: 20190412 |