CN106522201B - Expansion and shrinkage type drainage arrangement and mud positive/negative-pressure water discharge method - Google Patents
Expansion and shrinkage type drainage arrangement and mud positive/negative-pressure water discharge method Download PDFInfo
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- CN106522201B CN106522201B CN201611189056.1A CN201611189056A CN106522201B CN 106522201 B CN106522201 B CN 106522201B CN 201611189056 A CN201611189056 A CN 201611189056A CN 106522201 B CN106522201 B CN 106522201B
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- 238000000034 method Methods 0.000 title claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 239000004744 fabric Substances 0.000 claims abstract description 46
- 238000012545 processing Methods 0.000 claims abstract description 25
- 230000005855 radiation Effects 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims description 33
- 239000004746 geotextile Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 18
- 238000005086 pumping Methods 0.000 claims description 11
- 238000009825 accumulation Methods 0.000 claims description 7
- 238000007596 consolidation process Methods 0.000 abstract description 14
- 230000008602 contraction Effects 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000013022 venting Methods 0.000 abstract description 2
- 108091006146 Channels Proteins 0.000 description 20
- 238000010276 construction Methods 0.000 description 9
- 238000007667 floating Methods 0.000 description 8
- 238000007373 indentation Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 102000010637 Aquaporins Human genes 0.000 description 1
- 108010063290 Aquaporins Proteins 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012279 drainage procedure Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
- E02D3/103—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains by installing wick drains or sand bags
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Sludge (AREA)
Abstract
A kind of expansion and shrinkage type drainage arrangement and mud positive/negative-pressure water discharge method, belong to field of foundation treatment.The expansion and shrinkage type drainage arrangement includes the contraction and expansion permeable filter cloth for draining core and being wrapped on draining core, draining core includes drainage conduit body and at least one the radiation Drainage Division for being convexly equipped in drainage conduit body outer wall, is equipped at least one drainage channel for running through its both ends in drainage conduit body.The expansion and shrinkage type drainage arrangement can be shunk when taking out inflation processing and expansion, makes the mud cracking of consolidation, improves its drainability and drainage efficiency.The present invention also provides a kind of mud positive/negative-pressure water discharge method, this method makes the consolidation mud for being attached to expansion and shrinkage type drainage arrangement surface split using extraction gas disposal alternately, increases the venting capability and water permeable ability of consolidation mud, improves drainage efficiency.
Description
Technical field
The present invention relates to field of foundation treatment, in particular to a kind of expansion and shrinkage type drainage arrangement and the positive and negative pressure of mud
Water method.
Background technique
The a large amount of silt mixture of the requirement of engineering such as land reclamation, the shore reclamation of coastal area, these silt mixtures
Main source be river and lake dredging mud and harbour, navigation channel construction project dredging silt, these dredging silts mostly adopt
It is obtained with the modes such as suction are twisted, moisture content is high, sticky content is big, and drainage performance is poor, practice have shown that in natural air drying, consolidation condition
Under, these dredging silts need the 3-5 even longer time that moisture recovery use could be discharged, and this not only lowers dredgings to become silted up
The utilization rate of mud, it is also desirable to occupy a large amount of soil to be stacked.
In order to improve the utilization rate of dredging silt, need to carry out discharging consolidation processing to it, since the dredging of fluidised form shape is become silted up
Mud almost without structural strength, therefore traditional piling prepressing processing method be difficult to be discharged it includes moisture, be directed to fluidised form at present
Dredging silt mainly using negative pressure of vacuum load by the way of handled, be to plug drain bar in dredging silt first,
The drainage pipeline networks being connected to drain bar is re-layed, sealing film is then laid with, finally using the negative pressure of vacuum being connected to drainage pipeline networks
Device forms the negative pressure of 80-100kPa under film, is discharged in dredging silt using negative pressure load by drain bar, drainage pipeline networks
Moisture.However engineering practice shows that conventional technique of soft soil foundation treatment is only capable of the processing preferable dredging silt of drainage, handles aqueous
The case where being frequently encountered silting when the fluidised form shape dredging silt that rate is high, sticky content is high, drainage is poor, specific manifestation are as follows:
The mud consolidated after drying out can form earth pillar around drain bar, and earth pillar inner structural strength is higher and is dilute outside earth pillar
Pureed makes the moisture in the mud around drain bar be difficult to be discharged.Studies have shown that the processing fluidised form shape dredging of traditional vacuum preloading method
Mud is easy to happen both sides silting: first is that the fine grained to suspend in mud is easy to reside at drain bar under the drive of moisture content
In the filter membrane on surface, it will lead to drain bar filter membrane when dwell point large area occurs and silting occur；Second is that the stream near drain bar
Quick drainage can occur under traditional vacuum negative pressure load for state mud, and form the extremely low mud film layer of one layer of infiltration coefficient tightly
It is wrapped in draining plate surface, and then the silting of draining plate surface mud film layer occurs.
In order to overcome the above problem, researcher has carried out many research, if Authorization Notice No. is CN101591907B
Patent of invention, it discloses a kind of " the disjunctor vacuum preloading method for quickly treating of hydraulic fill of flowing mud foundation ", and this method is will to arrange
Water plate is inserted into mud and forms the shaped formation of V-arrangement, T shape or U-shaped, the sky that the method increase drain bars in dredging silt
Between layout density, have loss of vacuum it is small, the small advantage of vacuum drainage resistance.But this method still cannot overcome drain bar
By the defect of mud silting.For another example Authorization Notice No. is the patent of invention of CN105019426B, and it discloses one kind " to be with stalk
The fluidised form mud silting blocking fast vacuum prepressing consolidation method of displacement hull ", this method drain flexible feature using stalk, match
Crack can be generated in the blocking mud of consolidation by closing vacuum pumping method, to promote the discharge of moisture in mud.But this method
Be only suitable for the shallow layer reinforcement of mud, when being handled for the mud of deep layer, since the pressure of mud depths is larger, stalk compared with
It can not be sprung back under big pressure, in addition the springback capacity of stalk is smaller, so the crack that stalk rebound generates also is limited, not
Silt consolidation silting can be overcome the problems, such as well.
Therefore, it is necessary to mud drainage arrangements and mud water discharge method that one kind can effectively prevent mud to block.
Summary of the invention
The purpose of the present invention is to provide a kind of expansion and shrinkage type drainage arrangements, can be avoided mud on surface and consolidate blocking row
Aquaporin improves drainage effect.
Another object of the present invention is to provide a kind of mud positive/negative-pressure water discharge methods, and drainage arrangement surface can be made solid
The mud of knot cracks, so that mud be avoided to block drainage arrangement, improves drainage efficiency and drainage effect.
The embodiment of the present invention is achieved in that
A kind of expansion and shrinkage type drainage arrangement comprising drain core and be wrapped in contraction and expansion on draining core
Water filter cloth, draining core include drainage conduit body and at least one the radiation Drainage Division for being convexly equipped in drainage conduit body outer wall, drainage conduit body
Inside it is equipped at least one drainage channel for running through its both ends.
In preferred embodiments of the present invention, the outer wall of drainage conduit body offer at least one be connected to drainage channel
One drainage hole.
In preferred embodiments of the present invention, the outer wall for radiating Drainage Division offers what at least one was connected to drainage channel
Second drainage hole.
In preferred embodiments of the present invention, the outer wall of drainage conduit body offers at least one the first grooves.
In preferred embodiments of the present invention, the outer wall for radiating Drainage Division offers at least one the second grooves.
The present invention also provides a kind of mud positive/negative-pressure water discharge methods comprising following steps:
At least one layer of geotextiles are laid in the muck surface of accumulation；
By being inserted into mud after geotextiles for multiple above-mentioned expansion and shrinkage type drainage arrangement intervals；
Each expansion and shrinkage type drainage arrangement is connected to by grid with air charging system is taken out；
At least one layer of geotextiles are in addition laid on the surface of each expansion and shrinkage type drainage arrangement and grid, are then laid at least
One layer of sealing film sealing；
Each expansion and shrinkage type drainage arrangement alternately vacuumize process and inflation are handled using air charging system is taken out, water is discharged
Point.
In preferred embodiments of the present invention, when alternately vacuumize process and inflation are handled, first carry out vacuumizing place
It manages to anhydrous discharge, then is inflated processing.
In preferred embodiments of the present invention, alternately vacuumize process and inflation processing when, vacuumize process when
Between be 5-10 days, inflate processing time be 2-5 days.
In preferred embodiments of the present invention, when vacuumize process, sealing after the vacustat under film is 70-90kpa.
It is 50-80kpa after the pressure that permeable filter cloth is subject to is stable when inflation is handled in preferred embodiments of the present invention.
The beneficial effect of the embodiment of the present invention is: expansion and shrinkage type drainage arrangement provided by the invention includes draining core and package
Contraction and expansion permeable filter cloth on draining core, draining core include drainage conduit body and are convexly equipped in drainage conduit body outer wall
At least one radiation Drainage Division, at least one drainage channel for drawing water is equipped in drainage conduit body.Expansion and shrinkage type draining dress
Setting can shrink and expand in alternately vacuumize process and inflation processing, make the mud cracking of consolidation, improve draining
Efficiency.The present invention also provides a kind of mud positive/negative-pressure water discharge method, this method is made attached using pumping inflation processing alternately
Consolidation mud on expansion and shrinkage type drainage arrangement surface split, increase the venting capability and water permeable ability of consolidation mud, mention
High drainage efficiency, the quantity of residual after reducing mud draining.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram for the expansion and shrinkage type drainage arrangement that the embodiment of the present invention 1 provides, and wherein permeable filter cloth does not wrap up
On draining core；
Fig. 2 is the cross-sectional view in Fig. 1 at A-A；
Fig. 3 is the cross-sectional view when mud positive/negative-pressure water discharge method that the embodiment of the present invention 2 provides handles mud；
Fig. 4 is the top view when mud positive/negative-pressure water discharge method that the embodiment of the present invention 2 provides handles mud.
In figure: 001- expansion and shrinkage type drainage arrangement；100- drains core；110- drainage conduit body；111- drainage channel；112-
One drainage hole；The first groove of 113-；120- radiates Drainage Division；The second drainage hole of 121-；The second groove of 122-；The permeable filter of 200-
Cloth；300- geotextiles；310- seals film；320- branch pipe；The first general pipeline of 330-；The second general pipeline of 340-；350- vacuum jet pump；
360- pulsometer.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that the orientation or position of the instructions such as term "vertical", "inner", "outside"
Relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when the orientation or position usually put
Relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
There is specific orientation, be constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " the
One ", " second " etc. is only used for distinguishing description, is not understood to indicate or imply relative importance.
In addition, the terms such as term "vertical" are not offered as requiring component abswolute level or pendency, but can be slightly tilted.
It is not to indicate that the structure is had to fully horizontally if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical",
But it can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be
Mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside element.For the ordinary skill in the art, above-mentioned term can be understood in the present invention with concrete condition
In concrete meaning.
Embodiment 1
It please refers to shown in Fig. 1 and Fig. 2, the present embodiment provides a kind of expansion and shrinkage type drainage arrangements 001 comprising draining core
100 and be wrapped in draining core 100 on contraction and expansion permeable filter cloth 200, draining core 100 include drainage conduit body
110 and it is convexly equipped at least one radiation Drainage Division 120 of 110 outer wall of drainage conduit body, at least one is equipped in drainage conduit body 110 and is passed through
Wear the drainage channel 111 at its both ends.Specifically, the drainage conduit body 110 is cylinder, 4 drainings are equipped with inside drainage conduit body 110
Channel 111, every drainage channel 111 run through the both ends end face of drainage conduit body 110, and the outer wall of drainage conduit body 110 is convexly equipped with 8
The radiation Drainage Division 120 of bar shaped radiates the outer wall of one side edge and drainage conduit body 110 of the Drainage Division 120 far from drainage conduit body 110
Distance is equal to the radius of drainage conduit body 110.
The expansion and shrinkage type drainage arrangement 001 consolidates after can effectively prevent mud dehydration and is attached to its surface, Neng Gouchang
Time keeps higher drainage efficiency.After expansion and shrinkage type drainage arrangement 001 is inserted into mud, using pumping air charging system to breathing
Formula drainage arrangement 001 carries out vacuumize process, and the gap between drainage conduit body 110 and permeable filter cloth 200 is made to generate negative pressure, moisture
It is extracted by the drainage channel 111 being arranged on drainage conduit body 110, permeable filter cloth 200 is also due to the close row of being covered in of negative pressure
The surface of water core 100, since the outer wall surface of drainage conduit body 110 is convexly equipped with radiation Drainage Division 120, part permeable filter cloth 200
It is wrapped in the surface of radiation Drainage Division 120, part permeable filter cloth 200 is wrapped in the surface of drainage conduit body 110, with drainage procedure
Progress, moisture declines and consolidates rapidly in the mud near expansion and shrinkage type drainage arrangement 001, and the mud of consolidation is in permeable filter cloth
200 surface forms the very low mud film prevention moisture discharge of infiltration coefficient, then uses and takes out air charging system to expansion and shrinkage type draining dress
It sets 001 and is inflated processing, make to generate positive pressure between permeable filter cloth 200 and draining core 100, pressure pushes permeable filter cloth 200
It is expanded to far from draining 100 direction of core, makes the mud film rupture for being attached to 200 surface of permeable filter cloth after consolidating, the mud of consolidation
Restore higher permeability, continue to use take out air charging system to expansion and shrinkage type drainage arrangement 001 carry out vacuumize process, make moisture from
The rent of mud film, which enters, to be continued to be extracted.The drainage efficiency of the expansion and shrinkage type drainage arrangement 001 is improved compared to existing drainpipe
2-3 times, quickly and effectively the moisture accumulated in mud adequately can be discharged, reduce the residual moisture rate in mud.
As shown in Fig. 2, the outer wall of drainage conduit body 110 offers at least one first draining being connected to drainage channel 111
The outer wall in hole 112, radiation Drainage Division 120 offers at least one the second drainage hole 121 being connected to drainage channel 111.Specifically
, the outer wall of drainage conduit body 110 is opened up there are four the first drainage hole 112 being connected to drainage channel 111, radiates Drainage Division 120
Two sides outer wall offer second drainage hole 121, two the second drainage holes 121 inside draining core 100 by setting
The channel set is connected to drainage channel 111；First drainage hole 112 and the second drainage hole 121 are the axis along drainage conduit body 110
The strip-shaped hole that direction extends.
The first drainage hole 112 for being opened in 110 outer wall of drainage conduit body and the second row for being opened in radiation 120 outer wall of Drainage Division
Water hole 121 can be improved the drainage efficiency of expansion and shrinkage type drainage arrangement 001, and give the mud film being attached on permeable filter cloth 200 more
Big dilation matrices.Specifically, draining core when using taking out air charging system to the progress vacuumize process of expansion and shrinkage type drainage arrangement 001
Negative pressure is generated between body 100 and permeable filter cloth 200, a part of permeable filter cloth 200, which is shunk, is attached to drainage conduit body 110 and radiation
On 120 outer wall of Drainage Division, the moisture in mud is discharged by the first drainage hole 112, the second drainage hole 121 and drainage channel 111,
Mud film is formed after mud dehydration is attached to 200 surface of permeable filter cloth；Expansion and shrinkage type drainage arrangement 001 is carried out using air charging system is taken out
Inflation processing when, gas by drainage channel 111 through 121 pairs of draining cores 100 of the first drainage hole 112 and the second drainage hole around
The permeable filter cloth 200 of package applies pressure, makes to be attached to the permeable filter cloth 200 for draining 100 surface of core to the direction far from it
Expansion, the mud film for being fixedly arranged at 200 surface of permeable filter cloth is broken apart, water is efficiently discharged in the mud film for keeping permeability poor
Point.
As depicted in figs. 1 and 2, the outer wall of drainage conduit body 110 offers at least one the first grooves 113, radiates Drainage Division
120 outer wall offers at least one the second grooves 122.Specifically, the outer wall of the drainage conduit body 110 offers four along its axis
To the first groove 113 of extension；The outer wall two sides of radiation Drainage Division 120 are respectively equipped with second groove 122, second groove
122 along the axially extending of drainage conduit body 110.
The second groove that the outer wall of the first groove 113 and radiation Drainage Division 120 that the outer wall of drainage conduit body 110 opens up opens up
122 can be improved expansion and shrinkage degree of the permeable filter cloth 200 in positive/negative-pressure variation, and increasing is attached on permeable filter cloth 200
Mud film level of breakage, to improve the drainage efficiency of expansion and shrinkage type drainage arrangement 001.Specifically, taking out air charging system when using
When carrying out vacuumize process to expansion and shrinkage type drainage arrangement 001, drains and generate negative pressure between core 100 and permeable filter cloth 200, it is permeable
A part of filter cloth 200 shrinks 113 He of the first groove for being attached to and opening up on drainage conduit body 110 and radiation 120 outer wall of Drainage Division
In second groove 122, when using take out air charging system processing is inflated to expansion and shrinkage type drainage arrangement 001 when, draining core 100 with
Generate positive pressure between permeable filter cloth 200, shrink the permeable filter cloth 200 that is attached in the first groove 113 and the second groove 122 by
Positive pressure is expanded to far from draining 100 direction of core, makes the mud film for being attached to 200 surface of permeable filter cloth by bigger change
Shape stress and rupture, thus promote moisture by rent through expansion and shrinkage type drainage arrangement 001 be discharged.
Embodiment 2
As shown in Figure 3 and Figure 4, a kind of mud positive/negative-pressure water discharge method is present embodiments provided comprising following steps:
S201, prepare the expansion and shrinkage type drainage arrangement 001 that embodiment 1 provides, permeable filter cloth 200 is wrapped in the row prepared
On water core 100, expansion and shrinkage type drainage arrangement 001 is obtained.
S202, construction floating body is built on the mud of accumulation, be then act through construction floating body on the surface of mud and be laid with one layer
Geotextiles 300 plug what the expansion and shrinkage type drainage arrangement 001 of preparation was spaced in mud through geotextiles 300；Specifically, each
A being inserted vertically into mud by vertical and horizontal interval of expansion and shrinkage type drainage arrangement 001 is drained by longitudinally arranged expansion and shrinkage type and is filled
Setting the spacing between 001 is 3m, is 2m by the spacing between the expansion and shrinkage type drainage arrangement 001 of lateral arrangement.
S203, horizontally disposed branch will be passed through by the drainage channel 111 of longitudinally arranged each expansion and shrinkage type drainage arrangement 001
Pipe 320 is sequentially communicated, and each branch pipe 320 is communicated with pumping air charging system；Specifically, one end of each branch pipe 320 passes through first
General pipeline 330 is communicated with vacuum jet pump 350, and the other end of each branch pipe 320 is communicated with pulsometer 360 by the second general pipeline 340.
S204, it is spread on the surface of each expansion and shrinkage type drainage arrangement 001, branch pipe 320, the first general pipeline 330 and the second general pipeline 340
If two layers of geotextiles 300, it is then laid with one layer of sealing film 310, the surrounding indentation mud sealing of sealing film 310.
S205, vacuum jet pump 350 is opened by the first general pipeline 330 and each branch pipe 320 to each expansion and shrinkage type draining dress
001 carry out vacuumize process is set, the shape between the draining core 100 in expansion and shrinkage type drainage arrangement 001 and permeable filter cloth 200 is passed through
The moisture in mud is extracted out at negative pressure；When vacuumize process, seals after the vacuum degree below film rises and stablize in 70kpa.
S206, after vacuumize process 5 days, close vacuum jet pump 350, open pulsometer 360 pass through the second general pipeline 340
Processing is inflated to each expansion and shrinkage type drainage arrangement 001 with each branch pipe 320, make permeable filter cloth 200 under pressure to
Direction expansion far from draining core 100, breaks apart the mud film for being fixedly arranged at 200 surface of permeable filter cloth；Inflate the time of processing
It is 2 days, when inflation is handled, the pressure that permeable filter cloth 200 is subject to is stablized after rising in 50kpa.
S207, alternately vacuumize process and inflation are handled according to the method described above, until anhydrous pumping when vacuumize process
Out.
Embodiment 3
As shown in Figure 3 and Figure 4, a kind of mud positive/negative-pressure water discharge method is present embodiments provided comprising following steps:
S301, prepare the expansion and shrinkage type drainage arrangement 001 that embodiment 1 provides, permeable filter cloth 200 is wrapped in the row prepared
On water core 100, expansion and shrinkage type drainage arrangement 001 is obtained.
S302, construction floating body is built on the mud of accumulation, be then act through construction floating body and be laid with two layers on the surface of mud
Geotextiles 300 plug what the expansion and shrinkage type drainage arrangement 001 of preparation was spaced in mud through geotextiles 300；Specifically, each
A being inserted vertically into mud by vertical and horizontal interval of expansion and shrinkage type drainage arrangement 001 is drained by longitudinally arranged expansion and shrinkage type and is filled
Setting the spacing between 001 is 4m, is 3m by the spacing between the expansion and shrinkage type drainage arrangement 001 of lateral arrangement.
S303, horizontally disposed branch will be passed through by the drainage channel 111 of longitudinally arranged each expansion and shrinkage type drainage arrangement 001
Pipe 320 is sequentially communicated, and each branch pipe 320 is communicated with pumping air charging system；Specifically, one end of each branch pipe 320 passes through first
General pipeline 330 is communicated with vacuum jet pump 350, and the other end of each branch pipe 320 is communicated with pulsometer 360 by the second general pipeline 340.
S304, it is spread on the surface of each expansion and shrinkage type drainage arrangement 001, branch pipe 320, the first general pipeline 330 and the second general pipeline 340
If two layers of geotextiles 300, it is then laid with two layers of sealing film 310, the surrounding indentation mud sealing of sealing film 310.
S305, vacuum jet pump 350 is opened by the first general pipeline 330 and each branch pipe 320 to each expansion and shrinkage type draining dress
001 carry out vacuumize process is set, the shape between the draining core 100 in expansion and shrinkage type drainage arrangement 001 and permeable filter cloth 200 is passed through
The moisture in mud is extracted out at negative pressure；When vacuumize process, seals after the vacuum degree below film rises and stablize in 90kpa.
S306, after vacuumize process 10 days, close vacuum jet pump 350, open pulsometer 360 pass through the second general pipeline
340 and each branch pipe 320 processing is inflated to each expansion and shrinkage type drainage arrangement 001, make permeable filter cloth 200 under pressure
It is expanded to the direction far from draining core 100, breaks apart the mud film for being fixedly arranged at 200 surface of permeable filter cloth；Inflation processing when
Between be 5 days, when inflation processing, pressure that permeable filter cloth 200 is subject to is stablized after rising in 80kpa.
S307, alternately vacuumize process and inflation are handled according to the method described above, until anhydrous pumping when vacuumize process
Out.
Embodiment 4
As shown in Figure 3 and Figure 4, a kind of mud positive/negative-pressure water discharge method is present embodiments provided comprising following steps:
S401, prepare the expansion and shrinkage type drainage arrangement 001 that embodiment 1 provides, permeable filter cloth 200 is wrapped in the row prepared
On water core 100, expansion and shrinkage type drainage arrangement 001 is obtained.
S402, construction floating body is built on the mud of accumulation, be then act through construction floating body and be laid with two layers on the surface of mud
Geotextiles 300 plug what the expansion and shrinkage type drainage arrangement 001 of preparation was spaced in mud through geotextiles 300；Specifically, each
A being inserted vertically into mud by vertical and horizontal interval of expansion and shrinkage type drainage arrangement 001 is drained by longitudinally arranged expansion and shrinkage type and is filled
Setting the spacing between 001 is 3m, is 3m by the spacing between the expansion and shrinkage type drainage arrangement 001 of lateral arrangement.
S403, horizontally disposed branch will be passed through by the drainage channel 111 of longitudinally arranged each expansion and shrinkage type drainage arrangement 001
Pipe 320 is sequentially communicated, and each branch pipe 320 is communicated with pumping air charging system；Specifically, one end of each branch pipe 320 passes through first
General pipeline 330 is communicated with vacuum jet pump 350, and the other end of each branch pipe 320 is communicated with pulsometer 360 by the second general pipeline 340.
S404, it is spread on the surface of each expansion and shrinkage type drainage arrangement 001, branch pipe 320, the first general pipeline 330 and the second general pipeline 340
If two layers of geotextiles 300, it is then laid with two layers of sealing film 310, the surrounding indentation mud sealing of sealing film 310.
S405, vacuum jet pump 350 is opened by the first general pipeline 330 and each branch pipe 320 to each expansion and shrinkage type draining dress
001 carry out vacuumize process is set, the shape between the draining core 100 in expansion and shrinkage type drainage arrangement 001 and permeable filter cloth 200 is passed through
The moisture in mud is extracted out at negative pressure；When vacuumize process, seals after the vacuum degree below film rises and stablize in 75kpa.
S406, after vacuumize process 7 days, close vacuum jet pump 350, open pulsometer 360 pass through the second general pipeline 340
Processing is inflated to each expansion and shrinkage type drainage arrangement 001 with each branch pipe 320, make permeable filter cloth 200 under pressure to
Direction expansion far from draining core 100, breaks apart the mud film for being fixedly arranged at 200 surface of permeable filter cloth；Inflate the time of processing
It is 3 days, when inflation is handled, the pressure that permeable filter cloth 200 is subject to is stablized after rising in 65kpa.
S407, alternately vacuumize process and inflation are handled according to the method described above, until anhydrous pumping when vacuumize process
Out.
Comparative example
Comparative example loads water discharge method using conventional negative pressure of vacuum comprising following steps:
S501, construction floating body is built on the mud of accumulation, be then act through construction floating body and be laid with two layers on the surface of mud
Geotextiles.
S502, plugging in mud through geotextiles by the drainpipe interval of preparation；Specifically, each drainpipe is by vertical
It is inserted vertically into mud to laterally spaced, is 3m by the spacing between longitudinally arranged drainpipe, by the row of lateral arrangement
Spacing between water pipe is 2m, is communicated with vacuum jet pump after each drainpipe is sequentially communicated by branch pipe.
S503, it is laid with two layers of geotextiles on the surface of each drainpipe, branch pipe, is then laid with two layers of sealing film, seals film
Surrounding indentation mud sealing.
S504, unlatching vacuum jet pump carry out vacuumize process to each drainpipe by each branch pipe, will be in mud
Moisture extraction, is discharged until anhydrous.
The vacuum that the mud positive/negative-pressure water discharge method and comparative example provided using embodiment 2, embodiment 3, embodiment 4 is provided
Mud water discharge method carries out drainage sunk well to the mud of accumulation respectively, and detects time that draining needs and draining finishes
The water content of mud afterwards.Detection indicate that mud provided by the invention is just compared with conventional negative pressure of vacuum load water discharge method
The drainage efficiency of drainage by suction method improves 60-70%, and remaining moisture reduces 20-30% in mud after draining.
Multiple expansion and shrinkage type drainage arrangements 001 interval is inserted into mud by mud positive/negative-pressure water discharge method provided in this embodiment
In, and vacuumize process and inflation processing alternately are carried out to each expansion and shrinkage type drainage arrangement 001, successively mud draw water solid
Knot processing and rupture consolidation sludge treatment, substantially increase the working efficiency of mud draining, while can also maximize pumping
The moisture contained in mud is taken, the water content of mud after draining is reduced.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of expansion and shrinkage type drainage arrangement, which is characterized in that it include drain core and be wrapped in it is described draining core on can
It shrinks and the permeable filter cloth of expansion, the draining core includes drainage conduit body and be convexly equipped at least the one of the drainage conduit body outer wall
A radiation Drainage Division, the drainage conduit body is interior to be equipped at least one drainage channel for running through its both ends.
2. expansion and shrinkage type drainage arrangement according to claim 1, which is characterized in that the outer wall of the drainage conduit body offer to
Few first drainage hole being connected to the drainage channel.
3. expansion and shrinkage type drainage arrangement according to claim 1, which is characterized in that the outer wall of the radiation Drainage Division offers
At least one the second drainage hole being connected to the drainage channel.
4. expansion and shrinkage type drainage arrangement according to claim 1, which is characterized in that the outer wall of the drainage conduit body offer to
Few first groove.
5. expansion and shrinkage type drainage arrangement according to claim 1, which is characterized in that the outer wall of the radiation Drainage Division offers
At least one the second grooves.
6. a kind of mud positive/negative-pressure water discharge method, which is characterized in that itself the following steps are included:
At least one layer of geotextiles are laid in the muck surface of accumulation；
By being inserted into after the geotextiles for multiple expansion and shrinkage type drainage arrangement according to any one of claims 1 to 5 intervals
In the mud；
Each expansion and shrinkage type drainage arrangement is connected to by grid with air charging system is taken out；
At least one layer of geotextiles are in addition laid on the surface of each expansion and shrinkage type drainage arrangement and the grid, are then laid with
At least one layer sealing film sealing；
Each expansion and shrinkage type drainage arrangement alternately vacuumize process and inflation are handled using the pumping air charging system, row
Moisture out.
7. mud positive/negative-pressure water discharge method according to claim 6, which is characterized in that the alternately vacuumize process
When with inflation processing, the vacuumize process is first carried out to anhydrous discharge, then carry out the inflation processing.
8. mud positive/negative-pressure water discharge method according to claim 6, which is characterized in that the alternately vacuumize process
When with inflation processing, the time of the vacuumize process is 5-10 days, and the time of the inflation processing is 2-5 days.
9. mud positive/negative-pressure water discharge method according to claim 6, which is characterized in that described when the vacuumize process
It is 70-90kpa after vacustat under sealing film.
10. mud positive/negative-pressure water discharge method according to claim 6, which is characterized in that described when the inflation is handled
The pressure that water filter cloth is subject to is 50-80kpa after stablizing.
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| CN112648011A (en) * | 2021-01-25 | 2021-04-13 | 成都和拓土木工程有限公司 | Siphon rapid drainage anti-crystallization blind pipe and installation method thereof |
| CN115057598B (en) * | 2022-06-07 | 2024-08-23 | 中交四航工程研究院有限公司 | Dewatering system and method for positive and negative pressure of sludge |
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| CN2467575Y (en) * | 2001-03-13 | 2001-12-26 | 谢让明 | Combined drainage plate |
| KR20040034941A (en) * | 2002-10-17 | 2004-04-29 | 임준호 | Dehydration accelerating process of weak ground by vacuum compression |
| CN203429616U (en) * | 2013-08-28 | 2014-02-12 | 刘根鸣 | Water drainage pipe and water drainage device for carrying out soft foundation treatment through water drainage pipe |
| CN104631428A (en) * | 2015-01-05 | 2015-05-20 | 王军 | Novel partial deep layer pressurizing type vacuum preloading soft soil foundation processing method |
| CN105804044A (en) * | 2016-03-21 | 2016-07-27 | 温州大学 | Radiation type positive and negative pressure combination vacuum preloading foundation treatment system and method for vacuum preloading foundation treatment |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467575Y (en) * | 2001-03-13 | 2001-12-26 | 谢让明 | Combined drainage plate |
| KR20040034941A (en) * | 2002-10-17 | 2004-04-29 | 임준호 | Dehydration accelerating process of weak ground by vacuum compression |
| CN203429616U (en) * | 2013-08-28 | 2014-02-12 | 刘根鸣 | Water drainage pipe and water drainage device for carrying out soft foundation treatment through water drainage pipe |
| CN104631428A (en) * | 2015-01-05 | 2015-05-20 | 王军 | Novel partial deep layer pressurizing type vacuum preloading soft soil foundation processing method |
| CN105804044A (en) * | 2016-03-21 | 2016-07-27 | 温州大学 | Radiation type positive and negative pressure combination vacuum preloading foundation treatment system and method for vacuum preloading foundation treatment |
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