Device and Soft Clay Foundation processing unit for collecting drainage by electroosmosis and method
The invention belongs to geotechnical engineering field, especially a kind of devices and its processing method for collecting drainage by electroosmosis.
It would ordinarily be encountered the draining of Soft Clay Foundation in the soil body processing engineering that the ground such as estuary coast, alluvial plain carry out
Solidification problem.The engineerings such as some ocean dredgings carried out in cohesive soil Distribution Area and inland dredging, reclamation by pumping filling also will produce
Soft Clay Foundation, since large quantity of moisture is mixed into cohesive soil by work progress disturbance and forms the higher soil body of water content.China is soft
Clay ground is widely distributed, and with the rapid development of social productive forces and living standards of the people, the demand to soil is very urgent,
The geological conditions in face of soft clay is thus inevitably needed during the exploitation use in soil.
The discharging consolidation methods such as common vacuum preloading, piling prepressing are limited to the low hydraulic conductivity of soft clay and height sticks
The factors such as grain content, and the duration is longer, and be difficult to achieve the desired results.Electric osmose is one of electrokinetic phenomena, is referred under electric field action
The phenomenon that water phase performs relative motion the solid particle contacted with it, have electro-osmosis coefficient it is unrelated with radii of soil particles and
To the equally valid feature of combination water in the soil body, this feature is just suitable for handling Soft Clay Foundation.In order to avoid gold
Electro-kinetic Geosynthetics this concepts is proposed both at home and abroad a series of problems, such as belonging to electrode corrosion, and according to requirement of engineering system
Different face shapings is produced, such as conductive plastics drain bar, electro-osmosis method is made to enter new developing stage.
There are drainages by electroosmosis to collect difficult, negative and positive interpolar soil solidifying unevenness in Soft Clay Foundation field-hardened for electro-osmosis method
The problems such as even, is often combined with engineering methods such as vacuum method, preloadings.Method after joint not only makes working procedure become
Very complicated is obtained, and increases project cost and power consumption, is unfavorable for the popularization and application of electro-osmosis method.
Goal of the invention：An object of the present invention is to provide a kind of operation letter to solve the shortcomings of the prior art
Device for collecting drainage by electroosmosis single, drainage efficiency is high.It is a further object of the present invention to provide a kind of drainage by electroosmosis receipts
Collect processing method.It is still further an object of the present invention to provide a kind of Soft Clay Foundation processing units.
Technical solution：A kind of device for collecting drainage by electroosmosis, including be equipped with the prefabricating plate of several through-holes along longitudinal direction, consolidate
Due to the tube body of the prefabricating plate upper surface and the water pocket bag of adjustable internal water, and each through-hole of connection and suction pump.
In a further embodiment, the upper surface of the prefabricating plate is provided with the connection for fixing the water pocket bag
Button, the water pocket bag are detachably connected to prefabricating plate.The design of detachable or sectional type is easily installed and transports, and is convenient for simultaneously
The water pocket bag of not co-content is replaced, or replaces damaged water pocket bag.Separately transport is also easier to ensure prefabricating plate and water pocket bag
Safety, prevent damaged in transport installation process.
In a further embodiment, the lower surface of the prefabricating plate is provided with card slot, and the card slot includes along through-hole week
Several annular slots to laying are longitudinally disposed with along prefabricating plate and longitudinal card slot that be connected to annular slot；The annular slot
Several are inside connected with to the prominent mouth of the centroclinal extension of trepanning, the longitudinal direction card slot is suitable with the tube body with annular slot
Match.By the way that card slot, tube body is arranged（Such as tracheae or water pipe）Can be embedded at wherein, be allowed to be formed in the operating condition one it is whole
Body ensures the cooperation precision between tube body and prefabricating plate, enables the ponding for accurately extracting through hole, while card slot and pipe
After body cooperation, there is certain active force, can prevent tube body from shifting or detaching under the action of suction pump, make its work
More stablize, reduces maintenance.Meanwhile this mode also allows for the partition between tube body and prefabricating plate and transport.
In a further embodiment, the prominent mouth is obliquely installed, and the angle of prominent mouth central axes and horizontal plane is 10 °
~30 °.Prominent mouth is laid along the circumferential direction of annular slot, to the axis of through-hole while one end extends to the lower surface of prefabricating plate
Line is drawn close.The port of prominent mouth, i.e. water inlet is provided with the filter devices such as geotextiles.
In a further embodiment, the tube body include several looping tube portions for being adapted to the annular slot and
It is connected to the line style tube body of adjacent annular tube body, the looping tube portion is connected to the tube body in prominent mouth.In the embodiment
In, tube body itself can be integral type or separation reassembling type, wherein looping tube and the linear type tube body being connected to, and annular
Tube body and the connection type for protruding the tube body in mouth or protruding between mouth itself can be any contiguity mode, such as fasten,
It is spirally connected or similar structure.Tube body（Such as PU tracheaes or water pipe）Through hole can also be extended to using other modes, to inhale
Take the ponding at electric osmose cathode.Such as tube body uses and the integrally formed mode of prefabricating plate, or the company of offering in prefabricating plate
The channel or pipeline for connecing each through-hole either annular slot or prominent mouth add filter device in water inlet end, water outlet with draw water
Pump connection.This mode can also realize the purpose drawn water, and solve above-mentioned technical problem, reach corresponding technical effect
In a further embodiment, the prefabricating plate is metallic plate or plastic plate, and the bearing capacity of prefabricating plate is more than etc.
In 0.1PMa；The length of the prominent mouth is 2~4cm；The water pocket bag is the bag body of PVC or TPU materials, and the tube body is PU
Tracheae.Since in engineering-environment, the use environment of device is more severe, the selection of the material of prefabricating plate, tube body and water pocket bag and
Size selection is very important, according to cost, service life, installation and transportation facility etc. factors, for this purpose, applicant carried out
In-depth study and preferred design have carried out various considerations and design to prefabricating plate etc., have formd optimal design scheme.
The thinner thickness of prefabricating plate is 0.2~1cm, in order to which the length of prefabricating plate that facilitates for manufacturing, transporting and install is 5~10m, width
For the spacing between electric osmose anodic-cathodic, generally 1~1.5m.Water pocket bag presss from both sides screen cloth using PVC terylene composite material or TPU,
It with good leakproofness and corrosion resistance, is not influenced by season, there is valve switch on water pocket bag, it when not used can will be inside it
Air and liquid extraction, screw valve, reduce space hold amount.PU tracheae outer diameters are 8mm, and internal diameter 5mm is fixed on prefabricating plate
In the card slot of lower surface, ring-shaped P U tracheaes are placed in annular slot, and connect with the PU tracheaes in protrusion mouth, in protrusion mouth
It is sealed using geotextiles filter membrane, then ring-shaped P U tracheaes is ganged up by connection, PU by the PU tracheaes in longitudinal card slot in PU tracheaes port
Pneumatic joint can be used in connection between tracheae, should carry out encapsulation process, prevents gas leakage leak, the terminal connection of PU tracheaes from drawing water
In a further embodiment, the water pocket bag is provided with valve.
A kind of Soft Clay Foundation processing unit, including the device for collecting drainage by electroosmosis in any of the above-described embodiment,
And the electrode being laid in length and breadth in clay ground and the power supply being connect with electrode, through there is electric osmose wherein in the through-hole of prefabricating plate
Cathode.The electrode that electric osmose uses in reinforcing is conductive plastics drain bar or metal electrode, and the infiltration coefficient of Soft Clay Foundation is 10- 6~10- 8cm/s.A diameter of 10~15cm of prefabricating plate longitudinally institute's trepanning.
The processing method that a kind of drainage by electroosmosis is collected, based on described in any of the above-described embodiment for collecting drainage by electroosmosis
Device realize and include the following steps：
S1, in pre-reinforcement Soft Clay Foundation according to the construction method of electro-osmosis method, by rectangle or it is quincunx in a manner of be inserted into
Electrode carries out the drain that processing forms pre-determined size to the soil body around cathode；
S2, tube body is mounted in the card slot of prefabricating plate lower surface, water pocket bag is fixed on precompressed by junction button
Multigroup device for collecting drainage by electroosmosis is positioned in electric osmose place by the upper surface of plate, and electric osmose cathode is opened from prefabricating plate
It is pierced by hole, the protrusion mouth of prefabricating plate tapping stretches into drain and surrounds electric osmose cathode；
S3, the positive and negative anodes that electrode is connected to power supply by conducting wire, after energization, when drain has water to emerge at cathode, are opened
Suction pump is opened, the water in drain at cathode is discharged by tube body；
S4, electric osmose later stage wait for the anhydrous discharge of drain at cathode, can be noted into the water pocket bag of drainage by electroosmosis collection device
Water further promotes the water discharge at cathode as prefabricating load；
S5, electric osmose after treatment recycle drainage by electroosmosis collection device.
Advantageous effect：The drainage by electroosmosis collection device of the present invention is not only that water is discharged at electric osmose cathode and provides to drain to lead to
Road, and can by into water pocket bag water filling be used as prefabricating load, further promote electric osmose cathode draining, make anodic-cathodic it
Between soil solidifying be more uniformly distributed, it is difficult that the present apparatus can solve the problems, such as that Soft Clay Foundation drainage by electroosmosis is collected.Meanwhile this hair
It is bright simple in structure, it is easy to operate, convenient for recycling and reusing, it can quickly and efficiently realize that the drainage by electroosmosis of soft clay adds
Description of the drawings
Fig. 1 is the use state plan view of drainage by electroosmosis device at the construction field (site).
Fig. 2 is the structural schematic diagram of drainage by electroosmosis device.
Fig. 3 is the attachment structure schematic diagram of PU tracheaes.
Specific implementation mode
Hereinafter, with reference to the technical detail and operation principle of the description present invention of attached drawing 1 to 3.
In Fig. 1, cathode 2 and anode 3 arranged vertically and horizontally are provided in Soft Clay Foundation 1, the device of the invention is used for
In this operating mode.The drainage by electroosmosis collection device of the present invention described in detail below includes mainly prefabricating plate 4, water pocket bag 6 and tube body
8.As shown in Figure 1 or 2, several equidistant through-holes 11 are provided on prefabricating plate, the size and spacing of trepanning are by Soft Clay Foundation
Cathode spacing during electric osmose is reinforced determines.The lower surface and through hole of prefabricating plate are provided with card slot.It is annular around trepanning
Card slot, connection adjacent annular card slot is longitudinal card slot.Above-mentioned annular slot and longitudinal card slot are for protecting tube body, such as PU gas
Pipe.As it can be seen that being provided with several on annular slot protrudes mouth 5 from Fig. 1 or Fig. 2.Following table of the end of prominent mouth to prefabricating plate
Face and the central axes direction of through-hole extend, and form an inclined water-holding portion.
As can be seen from Figure 2, the upper surface of prefabricating plate is provided with junction button 9, and the engaging portion being adapted to therewith is provided on water pocket bag 6
（It is not shown）.A kind of detachable connection type dismountable in other words is formed between water pocket bag and prefabricating plate.In the lower part of Fig. 2,
It can be seen that water pocket bag is provided with valve 10.The water or tolerance in water pocket bag are controlled by valve.
As shown in figure 3, the other end of tube body is connected to water pump 7, i.e., it is connected to the water inlet end of water pump 7.
When in use, tube body is buckled in the card slot in prefabricating plate, each water inlet end of tube body and prominent mouth or prominent mouth
Interior tube body or through-hole connection, the sealing of tube body middle part, the other end of tube body are connected to suction pump, form a complete system
System.Water pocket bag is fixedly connected with prefabricating plate by junction button, fills the water of predetermined amount.When there is water in through-hole, pass through suction pump
It pulls water out.
In a further embodiment, the structure of prefabricating plate and tube body is further described.As shown in Figure 1, logical
Hole is uniformly arranged along the longitudinal axis of prefabricating plate, and trepanning spacing is the spacing of electric osmose cathode.In the lower surface of prefabricating plate and through-hole
Around be correspondingly arranged card slot.Card slot around through-hole is annular slot, and shape is adapted to size with through-hole.It is same such as to scheme
Shown in 3, the shape of tube body is also divided into longitudinal linear type tube body and looping tube.Wherein looping tube is adapted to annular slot,
And it is disposed therein at work.Longitudinal linear tube body is adapted to and is disposed therein with longitudinal card slot.
Card slot is for protecting tube body（Such as PU pipes）, when preventing prefabricating plate from moving, tube body is torn or is destroyed.It is also prevented from
Displacement is drawn when suction pump draws water caused by tube body, to make tube body water inlet end deviate, the effect that causes to draw water is bad.
Prominent mouth provided around annular slot stretches to the center of trepanning, and extends to the lower surface of prefabricating plate, so as to
The enough ponding accurately extracted at cathode prevents from blocking, prolong the service life to ensure effect of drawing water, can be in prominent mouth
The filter devices such as end set geotextiles.
In a further embodiment, split-type design may be used in looping tube and the linear type tube body of longitudinal direction, annular
Tube body is connected to by linear type tube body, mode of communicating can be include fastening, be spirally connected or being carried out by the way of connector close
Envelope connection.Looping tube can be connected to by the way that the cooperation tube body being adapted to prominent mouth is arranged with prominent mouth.Such as tube body will be coordinated
It is plugged on the inside of prominent mouth.Tube body can also be arranged in setting inside prominent mouth, and looping tube is attached with it.
Certainly, tube body can also be designed manufacture using integrally formed mode.
In the above-described embodiments, it is provided with valve switch on water pocket bag, its inner air and liquid can be extracted out when not used,
Valve is screwed, space hold amount is reduced.In other embodiments, it can be formed by multiple water pocket sack units or water pocket bag
It is divided into multiple independent water pocket bags, there are one independent switch, being formed multiple can independently regulate and control for each water pocket bag setting
Unit.Simultaneously because being detachable connection type between water pocket bag and prefabricating plate, therefore the different water pocket of volume can be replaced
Bag or the water pocket bag of breakage.
In other embodiments, tube body is PU tracheaes, which is fixed in the card slot of prefabricating plate lower surface, in annular
Ring-shaped P U tracheaes are placed in card slot, and are connect with the PU tracheaes in protrusion mouth, and the PU tracheaes port in protrusion mouth uses geotextiles
Filter membrane seals, then ring-shaped P U tracheaes are ganged up connection by the PU tracheaes in longitudinal card slot, and the terminal of PU tracheaes connects suction pump.
Under operating mode in the present embodiment, prefabricating plate is light-weight metal or plastic plate, and bearing capacity is not less than 0.1MPa, thickness
Relatively thin is 0.2~1cm, in order to manufacture, transport and install facilitate prefabricating plate length be 5~10m, width be electric osmose cathode and
Spacing between anode, generally 1~1.5m.A diameter of 10~15cm of prefabricating plate longitudinally institute's trepanning, the length of prominent mouth
Degree is 2~4cm, and the angle of prominent mouth and horizontal plane is 100~300；Water pocket bag presss from both sides net using PVC terylene composite material or TPU
Cloth has good leakproofness and corrosion resistance, is not influenced by season.PU tracheae outer diameters are 8mm, internal diameter 5mm, PU tracheae
Between connection pneumatic joint can be used, carry out encapsulation process, prevent gas leakage leak.
The processing method that drainage by electroosmosis of the present invention described in detail below is collected, mainly includes the following steps that：
Step S1：According to the construction method of electro-osmosis method in pre-reinforcement Soft Clay Foundation, rectangle or the arrangement such as quincunx
Mode is inserted into electrode, slightly handles the soil body around cathode the drain of pre-determined size；
Step S2：PU tracheaes are mounted in the card slot of prefabricating plate lower surface, water pocket bag is installed by junction button and is fixed
In the upper surface of prefabricating plate, the device of multigroup collection drainage by electroosmosis is positioned in electric osmose place, electric osmose cathode is from prefabricating plate
Trepanning in be pierced by, the protrusion mouth of prefabricating plate tapping stretches into drain and surrounds cathode；
Step S3：The positive and negative anodes of electrode and power supply are connected by conducting wire, after energization, wait for that drain has water to emit at cathode
Go out, you can open suction pump, extracted out the water at cathode by PU tracheaes；
Step S4：The electric osmose later stage waits for the anhydrous discharge of drain at cathode, can be to the water pocket bag of drainage by electroosmosis collection device
Middle water filling further promotes the water discharge at cathode as prefabricating load.
Step S5：Electric osmose after treatment, recycles drainage by electroosmosis collection device, and realization recycles.
It should be noted that the device of the invention and processing method are in the higher Soft Clay Foundation electric osmose of water content is reinforced
There is significant stabilization by drainage effect.In step sl, the drain of the pre-determined size, diameter（Width）It is generally with depth
10~15cm.In step s3, the electrode can carry out electrode conversion, need to drainage by electroosmosis collection device be replaced in cathode
In short, the present invention is provided to reinforce the drainage by electroosmosis collection device of Soft Clay Foundation and processing method with following
Advantage：First, provide drainage channel for water is discharged at electric osmose cathode, and can by into water pocket bag water filling be used as precompressed
Load further promotes the draining of electric osmose cathode, keeps the soil solidifying between anodic-cathodic uniform, can solve Soft Clay Foundation electricity
Ooze the problem of drainage collection difficulty.Second, the configuration of the present invention is simple is easy to operate, quickly high convenient for recycling and reusing
Effect, need not combine electro-osmosis method with other methods, save cost.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail can carry out a variety of equivalents to technical scheme of the present invention within the scope of the technical concept of the present invention, this
A little equivalents all belong to the scope of protection of the present invention.It is further to note that described in above-mentioned specific implementation mode
Each particular technique feature can be combined by any suitable means in the case of no contradiction.