CN106093348A - Tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation test method and device - Google Patents
Tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation test method and device Download PDFInfo
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- CN106093348A CN106093348A CN201610495524.1A CN201610495524A CN106093348A CN 106093348 A CN106093348 A CN 106093348A CN 201610495524 A CN201610495524 A CN 201610495524A CN 106093348 A CN106093348 A CN 106093348A
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Abstract
The invention discloses tubulose EKG layer and enter formula electrochemistry slip casting reinforcing soft foundation test method and device, vacuum preloading, electrochemistry grouting and reinforcing method are combined by the method, and utilize the conducting electricity of EKG pipe, can slip casting and corrosion-resistant function, the soil body is carried out second consolidation, meanwhile, separately grouting mode is used to carry out slip casting.Apparatus of the present invention include organic glass model groove, EKG pipe is a novel conductive plastic drain-pipe, two groups of copper conductors run through and insert in tube wall symmetrically, can respectively arrange a pvc pipe with holes simultaneously as electroosmosis electrode, vertical drainage passage and electrochemistry Grouting Pipe in anode and cathode and centre position；Having hole blend rubber plug on model trough floor negative electrode to seal, the copper cash available wire in EKG pipe is connected with external power supply, and EKG pipe is arranged in model groove both sides along its length.The present invention can improve soil stabilization with the displacement of the accurate measurements soil body, electromotive force curent change etc., improve soft base bearing capacity, and consolidation effect is evenly.
Description
Technical field
The present invention relates to tubulose EKG layer and enter formula electrochemistry slip casting reinforcing soft foundation test method and device, belong to soil stabilization
Technical field.
Background technology
Although China is vast in territory, but the utilization of soil body distribution is the most uneven.Most population aggravation is on edge, east
Haiti district, and the most ground in this region is to be made up of barged-in fill, marine soft soil, muddy soft soil etc..These soil property shapes
The ground become has the characteristics such as water content is big, bearing capacity is little, compressibility is high and frequently results in some foreseeable engineering problems.Mesh
Before have a lot for the reinforcing soft foundation method of above-mentioned ground, such as replacement cushion method, shake close, compacting method, displacement method, reinforcement method,
Cementing method, freezing and heating etc..But this type of method for processing foundation, is required to certain construction equipment and utensil, can expend a large amount of
Construction material, the most also can cause meeting construction because foundation bearing capacity is not enough.And this type of processing method is being executed
Man-hour all also can produce noise and flyash etc. pollute the certain disturbance of life of ground local products, and production and resident to periphery are raw
Live and impact.
Vacuum method is a kind of method of efficient and cost-effective environmental protection, and it utilizes the vacuum environment formed by the soil body
The material such as water, gas is discharged outside the soil body, and numerous Engineering Projects over the past two decades demonstrates its high efficiency.But utilize this
The ground that method processes, foundation surface forms crust layer, and crust layer is that deep soil drainage effect is poor particularly below, is carrying out work
Generally require before Cheng Jianshe and carry out after-treatment.Electro-osmosis method is also a kind of effective method, and it is by inserting conductive electrode
In Soft Clay Foundation, then passing to unidirectional current, the moisture in the soil body will be from anode to movable cathode.Its drainage rates is not by waterpower
The impact of infiltration coefficient, the relatively low Soft Clay Foundation treatment effect of, osmotic coefficient ratio higher for sticky content is particularly evident,
But in popularization and application, still suffer from some problems.Such as, the metal electrode used during electric osmose easily corrodes, and utilizes electro-osmosis method
Individually carry out intensity during foundation stabilization and improve limited.Although electrochemistry slip casting can improve soil strength to a certain extent, but by
Often carry out slowly in electric osmose process, so simple electrochemistry slip casting effect is the most intended good.
Patent publication No. is that " a kind of consolidating mud soil electrochemical modification hardened system " of CN 204676521U discloses
A kind of assay device utilizing electrochemistry slip casting method to reinforce muck soil, although this device can soil mass consolidation to a certain extent,
But it is initially with metal electrode, does not takes into account the corrosion-prone shortcoming of metal electrode, furthermore electrode be provided separately with Grouting Pipe,
Complicated device, and the method that this device may be only available for electrochemistry slip casting, the intensity after its soil body processes improves limited, effect
The most poor.
Summary of the invention
The technical problem to be solved is: provide tubulose EKG (Electrokinetic Geosynthetics)
Layer enters formula electrochemistry slip casting reinforcing soft foundation test method and device, solves existing method to improving limited the asking of soil strength
Topic.
The present invention solves above-mentioned technical problem by the following technical solutions:
Tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation test method, and the method includes that tubulose EKG straight-line is true successively
Empty precompressed and tubulose two stages of EKG electrochemistry slip casting；
Wherein, in the tubulose EKG directly discharging type vacuum prepressing stage: the vacuum of Control experiment soil sample is 60kPa, at test soil
The anode and cathode symmetry of sample inserts an EKG with holes pipe, utilizes vacuum method that test soil sample is carried out preliminary reinforcing drainage position
Reason, when test soil sample displacement continuous 3 little time keep constant time, proceed to the tubulose EKG electrochemistry slip casting stage；
In the tubulose EKG electrochemistry slip casting stage: the anode and cathode symmetry in test soil sample is inserted an EKG with holes and managed, and
A pvc pipe with holes is respectively inserted in anode and cathode and the centre position of test soil sample, utilizes electrochemistry slip casting method to test soil sample again
Carry out reinforcing drainage sunk well, when electrochemistry slip casting method starts, anode EKG with holes pipe injects calcium chloride solution, when discharge
Time in water containing calcium chloride solution, simultaneously molten toward injection sodium silicate in the pvc pipe with holes be arranged in anode, centre position, negative electrode
Liquid, when test soil sample displacement continuous 3 little time keep constant time, can terminate test.
As a kind of preferred version of the inventive method, in the described tubulose EKG vacuum preloading stage, utilize vacuum equipment control
The vacuum of system test soil sample is 60kPa, and vacuum equipment is connected with EKG pipe with holes by drain header, the water of test soil sample
Lease making drain header is discharged.
As a kind of preferred version of the inventive method, in the described tubulose EKG electrochemistry slip casting stage, in EKG pipe with holes
Being enclosed with two strands of copper cash, copper cash is connected with DC source by wire, and the calcium chloride solution of injection with the ratio of test soil sample is
1:120000, and inject calcium chloride solution be arranged in the pvc pipe with holes of anode, centre position, negative electrode injection sodium silicate
The ratio of solution is 10:3:3:4.
Tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation assay device, including organic glass model groove, lucite mould
The internal anode and cathode of type groove is symmetrical along its length inserts two EKG with holes pipes, is enclosed with two strands of copper cash in EKG pipe with holes；
When the tubulose EKG directly discharging type vacuum prepressing stage, this device also includes drain header, vacuum tube, vacuum meter, electronics
Scale, bottle,suction, vacuum pump and multifunctional water pump control chamber, EKG pipe with holes is connected with one end of vacuum tube by drain header, very
The blank pipe other end is connected with bottle,suction, and vacuum tube is provided with vacuum meter, and bottle,suction is placed on electronic scale, and bottle,suction connects vacuum
Pump, vacuum pump connects multifunctional water pump control chamber；
When the tubulose EKG electrochemistry slip casting stage, this device also include wire, DC source, collection bottle, three with holes
Pvc pipe, copper cash is connected with DC source by wire, and a pvc pipe with holes, cathode side band are respectively inserted in anode and cathode and centre position
Below the EKG pipe of hole, organic glass model groove correspondence position has draining hole, is placed with collection bottle below hole.
As a kind of preferred version of apparatus of the present invention, in the described tubulose EKG directly discharging type vacuum prepressing stage, this device also wraps
Including the geomembrane for leakage test soil sample, sand bedding course, vacuum diaphragm, the surface of described test soil sample is equipped with the most successively
Geomembrane, sand bedding course, vacuum diaphragm.
As a kind of preferred version of apparatus of the present invention, in the described tubulose EKG electrochemistry slip casting stage, this device also includes three
Group potential probe, throws anode and cathode and the centre position of test soil sample into, respectively for the electromotive force of detection test soil sample.
The present invention uses above technical scheme compared with prior art, has following technical effect that
1, the present invention uses tubulose EKG directly discharging type vacuum prepressing method combined with electrochemical slip casting method, compared to Conventional electrochemical
Slip casting method, soil stabilization level is obvious, and consolidation effect is more preferable, and the soft soil foundation after reinforcing has higher bearing capacity；Use and divide
Region grouting method, reinforcing mode is more reasonable, and soil stabilization intensity distributions is evenly.
2, assay device of the present invention is simple and reasonable, easy to operate, can be used for carrying out indoor tubulose EKG directly discharging type vacuum
Precompressed model test, tubulose EKG electrochemistry slip casting model test and vacuum-slip casting Combined Trials, before ensureing sealing
Put the electromotive force that can accurately measure inside soil body, and the change of monitoring current value, the in real time change of monitoring displacement.
3, the present invention on tubulose ekg electrode and PVC Grouting Pipe, be injected separately into calcium chloride can be abundant with sodium silicate serosity
Play electrode and the slip casting effect of EKG pipe, and avoid in EKG pipe, be injected simultaneously into calcium chloride and sodium silicate solution causes stifled
Plug, affects slip casting effect, avoids the corrosion-prone shortcoming of metal electrode simultaneously.
4, the present invention uses multifunctional water pump control chamber to connect vacuum pump, and in keeping model groove, vacuum is in design vacuum
In the range of, control the switch of vacuum pump, save the energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of tubulose EKG vacuum preloading subtraction unit in the present invention.
Fig. 2 is the organigram of tubulose EKG in the present invention.
Fig. 3 is the structural representation of tubulose EKG electrochemistry grouting device in the present invention.
Fig. 4 is the top view of tubulose EKG electrochemistry grouting device in the present invention.
Fig. 5 is the organigram of pvc pipe with holes in the present invention.
Wherein, 1 is multifunctional water pump control chamber, and 2 is vacuum pump, and 3 is bottle,suction, and 4 is electronic scale, and 5 is vacuum meter, and 6 are
Vacuum tube, 7 is organic glass model groove, and 8 is EKG with holes pipe, and 9 is potential probe, and 10 is sand bedding course, and 11 is vacuum diaphragm, and 12 are
Drain header, 13 is wire, and 14 is DC source, and 15 is draining hole, 16 collection bottles, and 17 is pvc pipe with holes, and 18 is test soil
Sample.
Detailed description of the invention
Embodiments of the present invention are described below in detail, and the example of described embodiment is shown in the drawings, the most ad initio
Represent same or similar element to same or similar label eventually or there is the element of same or like function.Below by ginseng
The embodiment examining accompanying drawing description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
As shown in Fig. 1, Fig. 3, Fig. 4, the tubulose EKG layer that the present invention provides enters formula electrochemistry slip casting reinforcing soft foundation test dress
Putting, including organic glass model groove 7, model groove 7 base plate cathode side has a draining hole 15 blend rubber plug and seals, with holes
EKG pipe 8 (as shown in Figure 2) is enclosed with two strands of copper cash, copper cash can with insulation joint head by wire 13 connect again with unidirectional current
Source 14 connects, and model groove 7 inside is gone up both sides along its length and can be inserted vertically into EKG pipe 8 with holes, in anode and cathode and middle position
A piece pvc pipe 17 (as shown in Figure 5) with holes of each layout, cathode side EKG with holes pipe 8 is placed on draining hole 15, and anode is with holes
EKG pipe 8 is symmetrically placed；EKG pipe 8 with holes is directly connected with vertical drainage supervisor 12, is provided with vacuum meter 5, prison on the upside of vacuum tube 6
Survey under-membrance vacuum degree changes, and drain header 12 is connected with vacuum tube 6 by three way cock and is connected with bottle,suction 3, and bottle,suction 3 is put
On electronic scale 4, bottle,suction 3 connects vacuum pump 2, and multifunctional water pump control chamber 1 connects vacuum pump 2 and connects power supply.
Organic glass model groove 7 is applicable to not lay directly discharging type vacuum prepressing method, electro-osmosis method or the pipe of horizontal drain pipe
Shape EKG electro-osmosis method is combined straight-line vacuum method, electrochemistry slip casting method.
When carrying out tubulose EKG directly discharging type vacuum prepressing method, select external diameter size equal in magnitude with EKG pipe 8 internal diameter with holes
Drain header 12 be joined directly together with EKG pipe 8 with holes, and with raw material band be wound around interface ensure air-tightness, drain header 12 passes
Vacuum diaphragm 11 is connected composition vacuum system with vacuum tube 6；When carrying out electrochemistry slip casting, then arrange pvc pipe 17 with holes and
Potential probe 9, takes out the rubber stopper on model groove 7 base plate draining hole 15, and the water in the soil body is discharged from draining hole 15,
Two strands of copper cash on EKG pipe 8 with holes are connected with wire 13 by insulating clamp and are connected composition electrochemistry note again with DC source 14
Slurry system.
The tubulose EKG layer that the present invention provides enters formula electrochemistry slip casting reinforcing soft foundation method and comprises the following steps:
Tubulose EKG directly discharging type vacuum prepressing stage etch:
1) prepare organic glass model groove 7, and on model groove 7 surrounding inwall, smear epoxy resin, reduce process of the test
In boundary effect.
2) being blocked with rubber stopper by the draining hole 15 on model groove 7 base plate, layout vertical in model groove 7 is with holes
EKG pipe 8, will cover with Woven geofabric above draining hole 15, and the EKG pipe 8 with holes at negative electrode is placed on draining hole 15,
At EKG pipe 8 with holes at anode and negative electrode, EKG with holes pipe is symmetrically placed.
3) the test soil sample 18 configured is loaded at model groove 7 to sand bedding course 10, arranges soil sample just face and make it smooth.
4) arrange sealing system, test soil sample 18 surface lay geomembrane, check errorless after, in model groove 7 equably
Load the thick sand bedding course 10 of about 3cm, arrange its surface and make it the most smooth, finally lay vacuum diaphragm 11, vacuum diaphragm 11 is pressed into
In the soil body of model groove 7 surrounding, and it is backfilling and compacted with soft clay, it is ensured that sealing, carries out the sealing at drain header 12 membrane.
5) arrange drainage system, EKG pipe 8 with holes be connected with drain header 12, drain header 12 through sand bedding course 10 and
Vacuum diaphragm 11 is connected with vacuum tube 6, arranges vacuum meter 5 on the upside of vacuum tube 6, and vacuum tube 6 is connected with bottle,suction 3, multifunctional water pump
Control chamber 1 is connected with vacuum pump 2, the low-pressure drainage system of composition directly discharging type vacuum prepressing, and bottle,suction 3 is placed on electronic scale 4,
Pump-out is measured in real time.
6) directly the soil body is processed by tubulose EKG directly discharging type vacuum prepressing method, when test proceeds to displacement continuous 3
When hour keeping constant, this step-by-step test can be terminated.
Electrochemistry slip casting stage etch:
1) turn off vacuum pump 2, EKG pipe 8 with holes separated with drain header 12, remove vacuum diaphragm 11, remove sand bedding course 10,
And clean out the remaining sand testing soil sample 18 surface, pull out the rubber stopper on model groove 7 base plate draining hole 15.
2) arrange measurement system and filling system, prepare three groups of potential probe 9 respectively, along away from cathode drain duct 2.5cm,
The distance of 10cm, 17.5cm sets into soil sample 3cm, 6cm, 9cm depth, and on EKG pipe 8 with holes, copper conductor is by insulating clamp even
Connect wire 13 to be connected with DC source 14 again；Band it is inserted vertically into respectively at test soil sample 18 anode, centre position, cathode site
Hole pvc pipe 17.
3) in anode EKG pipe, 50ml calcium chloride solution is injected when this step-by-step test starts, when containing chlorine in the water discharged
When changing calcium solution simultaneously toward be arranged in the pvc pipe with holes at anode, centre position and cathode site inject 15ml, 15ml,
20ml sodium silicate solution, the earth volume that in the present embodiment, the amount of solution of injection is corresponding is 200mm × 250mm × 120mm, works as the soil body
Displacement can terminate test when within continuous 3 hours, keeping constant.
At the initial stage of reinforcing, in the soil body, moisture content is relatively big, utilize tubulose EKG directly discharging type vacuum prepressing method to the soil body at
Reason, discharges the moisture in the soil body, and along with test is carried out, soil moisture content reduces, vacuum at inside soil body along depth attenuation, very
Empty precompressed effect declines, then uses electrochemistry slip casting method instead and again process the soil body, discharges moisture, soil mass consolidation, by point
Region slip casting ensures soil strength uniformity.
Above example is only the technological thought that the present invention is described, it is impossible to limit protection scope of the present invention with this, every
The technological thought proposed according to the present invention, any change done on the basis of technical scheme, each fall within scope
Within.
Claims (6)
1. tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation test method, it is characterised in that the method includes tubulose successively
EKG directly discharging type vacuum prepressing and tubulose two stages of EKG electrochemistry slip casting；
Wherein, in the tubulose EKG directly discharging type vacuum prepressing stage: the vacuum of Control experiment soil sample is 60kPa, in test soil sample
Anode and cathode symmetry inserts an EKG with holes pipe, utilizes vacuum method that test soil sample is carried out preliminary reinforcing drainage sunk well, when
When the displacement of test soil sample keeps constant in continuous 3 hours, proceed to the tubulose EKG electrochemistry slip casting stage；
In the tubulose EKG electrochemistry slip casting stage: the anode and cathode symmetry in test soil sample inserts an EKG with holes pipe, and in test
A pvc pipe with holes is respectively inserted in the anode and cathode of soil sample and centre position, utilizes electrochemistry slip casting method again to carry out test soil sample
Reinforce drainage sunk well, when electrochemistry slip casting method starts, anode EKG with holes pipe injects calcium chloride solution, when in the water discharged
During containing calcium chloride solution, in the pvc pipe with holes be arranged in anode, centre position, negative electrode, inject sodium silicate solution simultaneously, when
When the displacement of test soil sample keeps constant in continuous 3 hours, test can be terminated.
The most according to claim 1, tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation test method, it is characterised in that institute
Stating in the tubulose EKG directly discharging type vacuum prepressing stage, the vacuum utilizing vacuum equipment Control experiment soil sample is 60kPa, and vacuum
Equipment is connected with EKG pipe with holes by drain header, and the moisture of test soil sample is discharged through drain header.
The most according to claim 1, tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation test method, it is characterised in that institute
Stating in the tubulose EKG electrochemistry slip casting stage, be enclosed with two strands of copper cash in EKG pipe with holes, copper cash is by wire with DC source even
Connect, the calcium chloride solution of injection with test soil sample ratio be 1:120000, and inject calcium chloride solution be arranged in anode,
Centre position, negative electrode pvc pipe with holes in inject the ratio of sodium silicate solution be 10:3:3:4.
4. tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation assay device, it is characterised in that include organic glass model groove,
The internal anode and cathode of organic glass model groove is symmetrical along its length inserts two EKG with holes pipes, is enclosed with two strands in EKG pipe with holes
Copper cash；
When the tubulose EKG directly discharging type vacuum prepressing stage, this device also include drain header, vacuum tube, vacuum meter, electronic scale,
Bottle,suction, vacuum pump and multifunctional water pump control chamber, EKG pipe with holes is connected with one end of vacuum tube by drain header, vacuum
The pipe other end is connected with bottle,suction, and vacuum tube is provided with vacuum meter, and bottle,suction is placed on electronic scale, and bottle,suction connects vacuum
Pump, vacuum pump connects multifunctional water pump control chamber；
When the tubulose EKG electrochemistry slip casting stage, this device also includes wire, DC source, collection bottle, three pvc pipes with holes,
Copper cash is connected with DC source by wire, and a pvc pipe with holes, cathode side EKG with holes are respectively inserted in anode and cathode and centre position
Below pipe, organic glass model groove correspondence position has draining hole, is placed with collection bottle below hole.
The most according to claim 4, tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation assay device, it is characterised in that institute
Stating the tubulose EKG directly discharging type vacuum prepressing stage, this device also includes the geomembrane for leakage test soil sample, sand bedding course, vacuum
Film, the surface of described test soil sample is equipped with geomembrane, sand bedding course, vacuum diaphragm the most successively.
The most according to claim 4, tubulose EKG layer enters formula electrochemistry slip casting reinforcing soft foundation assay device, it is characterised in that institute
Stating the tubulose EKG electrochemistry slip casting stage, this device also includes three groups of potential probe, throw into respectively test soil sample anode and cathode and in
Between position, for the electromotive force of detection test soil sample.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610495524.1A CN106093348B (en) | 2016-06-29 | 2016-06-29 | EKG layers of tubulose is into formula electrochemistry slip casting reinforcing soft foundation test method and device |
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| CN201610495524.1A CN106093348B (en) | 2016-06-29 | 2016-06-29 | EKG layers of tubulose is into formula electrochemistry slip casting reinforcing soft foundation test method and device |
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| CN107724379A (en) * | 2017-09-21 | 2018-02-23 | 河海大学 | A kind of method of electrochemistry vacuum prepressing reinforcement soft base |
| CN113106963A (en) * | 2021-03-26 | 2021-07-13 | 中煤科工集团沈阳研究院有限公司 | Electrochemical grouting treatment method for side slope based on pile forming effect |
| CN114858895A (en) * | 2022-05-07 | 2022-08-05 | 江苏科技大学 | Testing device and testing method for electrochemically consolidating, draining and circularly heating local soil body of cathode |
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| CN106093348B (en) | 2018-07-24 |
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