CN206512698U - A kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure - Google Patents
A kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure Download PDFInfo
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- CN206512698U CN206512698U CN201720192137.0U CN201720192137U CN206512698U CN 206512698 U CN206512698 U CN 206512698U CN 201720192137 U CN201720192137 U CN 201720192137U CN 206512698 U CN206512698 U CN 206512698U
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Abstract
The utility model discloses a kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure, pending blowing-filling sludge is located on the base of original place, pending blowing-filling sludge upper surface is equipped with lower geotechnological layer of cloth successively, upper geotechnological layer of cloth and two layers of vacuum sealing film, manually it is inserted with downwards from lower geotechnological layer of cloth vertically long, short drain bar, it is described vertically long, short drain bar is connected with different vavuum pumps, that is vavuum pump one and vavuum pump two, it is connected between the upper surface of the vertical short drain bar with horizontal draining board, the horizontal drainage plate level is laid on the upper surface of vertical short drain bar, geotechnological layer of cloth is equipped with above the horizontal draining board, two layers of vacuum sealing film is equipped with above upper geotechnological layer of cloth, two layers of vacuum sealing film surrounding, which is excavated, press mold ditch, press mold ditch is backfilled with silt clay.The utility model avoids the generation of " earth pillar ", is conducive to avoiding the ground after-treatment in later stage, so as to reduce time cost and fund input cost again.
Description
Technical field
The utility model is related to the foundation treatment technology neck of the fixed buildings such as port engineering, architectural engineering, highway engineering
Domain, more particularly to a kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure.
Background technology
In recent years, as coastal strand Park district economy construction investment paces are accelerated, land resource day is becoming tight, to ensure warp
Help the connecting built, and large area turns into coastal area and solves one of deficient effective way of land resource, due to China coast
The shortage of sand resource, reclaiming fields from the sea generally using blowing-filling sludge to be increased is handled, and due to saturated dredger soft soil high-moisture, is suppressed
Contracting, hypotonicity, the bad engineering characteristic of ultralow bearing capacity, it is impossible to ensure that follow-up soft capital construction sets big machinery and personnel enter
.
In order to which to saturated dredger soft soil, especially blowing-filling sludge carries out superficial layer reinforcing recently, domestic practical new nearly ten years
Type has simultaneously promoted superficial layer technique of soft soil foundation treatment, and (directly discharging type vacuum is pre- for the vacuum preloading of the flat sand bedding course of free direct-drain water therein
Pressure technology) it is even more to be widely used in recent years.But in Guangdong, Fujian, Wenzhou, Ningbo, Qingdao, Lianyun Harbour, Tianjin, big
Even etc. find in the practice on ground, with occurring so-called " earth pillar (native stake) " after the technical finesse recently blowing-filling sludge, i.e., approximately with
The irregular column of axle centered on drain bar, from top to bottom diameter not etc., it is exactly " post (stake) head " to be reflected in earth's surface.It is many existing
Field is excavated experiment and shown, the height of " earth pillar (native stake) " is general in 1.5m~1.6m, in the up big and down small form of falling elliptic cone, on
Diameter 0.5m~0.6m is held, such as using drain bar spacing as 0.8m, " earth pillar (native stake) " upper end spacing is 0.2m~0.3m, works as weak soil
Depth is 1.0m, then earth pillar (native stake) depth is 0.4m~0.6m, and when weak soil depth is 1.5m~1.6m, then earth pillar (native stake) is deep
Spend for 0.8m, the soil body scope between " earth pillar (native stake) " is the weak band after processing, weak band place shows as strong, weak phase
Between inhomogeneities.In 1.5m~below 1.6m drain bars typically without clay attachment phenomenon, weak soil discharging consolidation is substantially uniform, and
Deep intensity is higher than superficial part.For blowing-filling sludge place, the purpose of superficial processing is to be formed the work further constructed
Face, the influence depth of general construction equipment is 2m~3m, and this is because of place top layer inequality caused by " earth pillar (native stake) " phenomenon
One and do not reach processing intent, therefore eliminate directly discharging type vacuum prepressing formed by " earth pillar (native stake) " phenomenon have it is very direct
Engineering significance.
For above by " earth pillar (native stake) " formed by traditional directly discharging type vacuum prepressing, using the gradual of classification
The method of vacuum preloading pressurization or encryption drain bar spacing is eliminated, but uses after these suggestion and measures and there is processing
The problem of time length (being increased to by 45 days~50 days 90 days~100 days) and processing cost increase.It is therefore desirable to existing
The method and structure that silt soft soil superficial layer is handled make improvements.
Utility model content
For deficiency of the prior art, the utility model is provided at a kind of layer of blowing-filling sludge superficial recently Quick uniform
Structure is managed, it eliminates the place non-uniform phenomenon that is produced by directly discharging type vacuum prepressing of depth within 2m, it is to avoid " earth pillar (soil
Stake) " generation, be conducive to avoiding the after-treatment in later stage, so as to reduce time cost and fund input cost again.
To achieve these goals, technical solution adopted in the utility model is：
A kind of layer of blowing-filling sludge superficial recently Quick uniform processing method, pending blowing-filling sludge is located on the base of original place,
Comprise the following steps：
Step one, pending blowing-filling sludge upper surface is equipped with lower geotechnological layer of cloth, is manually plugged downwards from lower geotechnological layer of cloth
There are vertically long drain bar and vertical short drain bar, vertically long drain bar and vertical short drain bar are in matrix equidistantly distributed, institute
State in the original place base under insertion depth to the pending blowing-filling sludge of vertically long drain bar, the adjacent vertically long drain bar leads to
Cross long slab directly discharging type vacuum pipe to be connected, each long slab directly discharging type vacuum pipe is connected with vavuum pump one, adjacent is described vertical
Straight short drain bar is connected by short slab directly discharging type vacuum pipe, and each short slab directly discharging type vacuum pipe is connected with vavuum pump two,
It is connected between the upper surface of the vertical short drain bar with the horizontal draining board of high water-permeability plastics, the horizontal draining board water
Tiling is located above the upper surface of vertical short drain bar, the horizontal draining board and is equipped with geotechnological layer of cloth, upper geotechnological layer of cloth
Side is equipped with two layers of vacuum sealing film, i.e. upper strata vacuum sealing film and lower floor's vacuum sealing film, lower floor's vacuum sealing film and buried
There is vacuum meter, two layers of vacuum sealing film surrounding, which is excavated, press mold ditch, and press mold ditch is backfilled with silt clay, wherein vertically
The long drain bar vavuum pump different with vertical short drain bar connection, so as to realize to vertically long drain bar and vertical short drain bar
Vacuumize control so that the different upper strata weak soil of moisture content and lower floor's weak soil and slotting vertically long drain bar, vertical short drain bar model
The weak soil enclosed can be controlled with the vavuum pump different time, so as to the preferably convenient operation for carrying out people；
Step 2: starting vavuum pump one and the progress vacuum preloading of vavuum pump two simultaneously, by being buried under above-mentioned vacuum sealing film
If vacuum meter reach more than 80kpa and stablize 15 days~20 days；
Step 3: closing vavuum pump two, vavuum pump one is continued to run with 15 days~20 days, vavuum pump one is then shut off；
Step 4: starting vavuum pump two, the vavuum pump two stops reaching design requirement after running 7 days~10 days, overall
The vacuum preloading time is 45 days~50 days, to realize to the equal of pending blowing-filling sludge upper strata High water cut weak soil (1.5m~2.0m)
Even reinforcing is reinforced.
Vertically long drain bar and vertical short drain bar use the plastic draining board of SPB-B types in the step one.
Spacing in the step one between the long drain bar of neighboring vertical presses 0.8m~0.9m, the long drain bar of its neighboring vertical
Between spacing be spacing between the long drain bar of neighboring vertical by pending blowing-filling sludge top layer ultra-soft soil's water content depending on,
When being more than 110% in pending blowing-filling sludge top layer ultra-soft soil's water content, the spacing between the long drain bar of neighboring vertical is
0.8m, when being less than 110% in pending blowing-filling sludge top layer ultra-soft soil's water content, between the long drain bar of neighboring vertical between
Away from for 0.9m, determining the spacing between the long drain bar of neighboring vertical so as to more preferably realization by the concrete condition of moisture content
The speed and efficiency of draining, are better able to meet use demand.
Vertical short drain bar inserts 1.5m~2.0m in pending blowing-filling sludge in the step one, vertical short drain bar
Insertion depth is by pending blowing-filling sludge top layer ultra-soft soil's water content, sand content and infiltration coefficient etc. factor according to specific feelings
Depending on condition, specifically when pending blowing-filling sludge top layer ultra-soft soil's water content is more than 110%, (moisture content is more than 110%
To need weak soil to be processed), sand content takes 2.0m when being less than 5%, sand content takes 1.5m when being more than 15%, silt content 5%~
Any number in 1.5m~2.0m is taken when 15%.
The horizontal draining board of high water-permeability plastics can use high water-permeability plastics c-type drain bar or use in the step one
Permeable, gas permeability circular wave chimney filter is replaced, and the upper surface of vertical short drain bar is laid on by horizontal drainage plate level, is made
Horizontal drainage passage is formed at the native top of pending blowing-filling sludge top layer ultra-soft of vertical short drain bar control, so as to quickly discharge soft
The Free water on native top layer, the horizontal draining board also can mutually be replaced using horizontal drain pipe, and mode is various, available leeway compared with
Greatly.
A kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure, pending blowing-filling sludge is located on the base of original place,
The pending blowing-filling sludge upper surface is equipped with lower geotechnological layer of cloth, and vertically long draining is manually inserted with downwards from lower geotechnological layer of cloth
Plate and vertical short drain bar, vertically long drain bar and vertical short drain bar are in matrix equidistantly distributed, and the neighboring vertical is long
Spacing between drain bar be between 0.8m~0.9m, the long drain bar of its neighboring vertical spacing be by the long drain bar of neighboring vertical it
Between spacing press pending blowing-filling sludge top layer ultra-soft soil's water content depending on, when pending blowing-filling sludge top layer ultra-soft soil
When moisture content is more than 110%, the spacing between the long drain bar of neighboring vertical is 0.8m, when in pending blowing-filling sludge top layer ultra-soft
When soil's water content is less than 110%, the spacing between the long drain bar of neighboring vertical is 0.9m, the insertion of the vertically long drain bar
In original place base under depth to pending blowing-filling sludge, the vertical short drain bar insert 1.5m in pending blowing-filling sludge~
2.0m, the insertion depth of vertical short drain bar is by pending blowing-filling sludge top layer ultra-soft soil's water content, sand content and infiltration system
Number etc. factors as the case may be depending on, specifically pending blowing-filling sludge top layer ultra-soft soil's water content be more than 110%
When (moisture content be only more than 110% need to be processed weak soil), sand content takes 2.0m when being less than 5%, when sand content is more than 15%
1.5m is taken, silt content takes any number in 1.5m~2.0m at 5%~15%, and the adjacent vertically long drain bar passes through length
Plate directly discharging type vacuum pipe is connected, and each long slab directly discharging type vacuum pipe is connected with vavuum pump one, and adjacent is described vertical short
Drain bar is connected by short slab directly discharging type vacuum pipe, and each short slab directly discharging type vacuum pipe is connected with vavuum pump two, described
It is connected between the upper surface of vertical short drain bar with the horizontal draining board of high water-permeability plastics, the horizontal drainage plate level paving
It is located above the upper surface of vertical short drain bar, the horizontal draining board and is equipped with geotechnological layer of cloth, is spread above upper geotechnological layer of cloth
Provided with two layers of vacuum sealing film, i.e. upper strata vacuum sealing film and lower floor's vacuum sealing film, it is embedded with lower floor's vacuum sealing film true
Empty table, two layers of vacuum sealing film surrounding, which is excavated, press mold ditch, and press mold ditch is backfilled with silt clay.
Vertically long drain bar and vertical short drain bar in the utility model are in matrix equidistantly distributed, particularly often
A square is constituted between the vertically long drain bar of row, then square center position is inserted with vertical short drain bar, this
Sample just constitute one it is quincunx so that the vertically long drain bar of the vertical short drain bar of center position to periphery apart from equal, this
Sample advantageously reduces blowing-filling sludge superficial layer non-uniform phenomenon, is conducive to avoiding the after-treatment in later stage, so as to reduce the time
Cost and fund input cost again.
Utility model principle
Saturated dredger soft soil is usually stream mud~mud scum, and top layer is almost slime water, with particle is thin and uneven, High water cut
The features such as rate, high-ductility, high-compressibility and extremely low intensity.A large amount of sampling test tables of the blast-filled ground after 1 month~3 months
Bright, its moisture content highest in 0.5m~2.0m, up to 110%~150%, is down gradually reduced；Vane shear strength (Cu values)
It is 0 in 0.5m~2.0m, is down gradually increased to 2kpa~5kpa.This is due to produced by blowing-filling sludge early stage falling silt process
Phenomenon.When being handled using directly discharging type vacuum prepressing, because the suction of negative pressure of vacuum is produced in the High water cut soil body
Raw penetration, makes clay migrate and be gradually attached on drain bar outer membrane to drain bar, is constantly thickeied with the growth of time
Unite and form " earth pillar " around drain bar, and prevent the Free water outside " earth pillar " from sucking in vertical drain bar, make drain bar
Between the soil body can not further discharging consolidation and to ultimately result in basement process uneven.
Many digging in-situ experiments show that the length of " earth pillar " is general in 1.5m~1.6m, in the up big and down small ellipse that falls
Cone shape, upper end diameter 0.5m~0.6m, such as using drain bar spacing as 0.8m, " earth pillar " upper end spacing is 0.2m~0.3m, is blown
It is 0.4m~0.6m to fill out earth pillar depth when mud depth is 1.0m, and earth pillar is 0.8m when blowing-filling sludge depth is 1.5m~1.6m,
Soil body scope between " earth pillar " is the weak band after processing, and place shows as strong, weak alternate inhomogeneities.1.5m~
Below 1.6m drain bars are general, and without clay attachment phenomenon, weak soil discharging consolidation is substantially uniform, and deep intensity is higher than superficial part.For
For blowing-filling sludge place, the purpose of superficial processing is to be formed the working face further constructed, the influence of general construction equipment
Depth is 2m~3m, and this is because of place top layer heterogeneity caused by " earth pillar " phenomenon, so as to not reach processing intent.Therefore disappear
Except " earth pillar " phenomenon formed by directly discharging type vacuum prepressing has very direct engineering significance.In order to eliminate within 2m depth because straight
Row's formula vacuum preloading and the place non-uniform phenomenon produced, prevent the generation of " earth pillar ", the utility model from lower geotechnological layer of cloth to
Vertically long drain bar and vertical short drain bar are manually inserted with down, according to the combination of vertically long drain bar and vertical short drain bar,
The consolidation and control clay of mud are formed on drain bar (vertically long drain bar and vertical short drain bar) top in reinforcing top layer 2m
The Quick uniform processing of " earth pillar ".The utility model using vertically long drain bar and vertical short drain bar, vertically long drain bar and
Vertical short drain bar distinguishes corresponding vavuum pump one and vavuum pump two, controls to hang down by different vavuum pump one and vavuum pump two
The evacuated time of straight long drain bar and vertical short drain bar, so as to realize outside the barged-in fill discharging consolidation of different designs depth, weight
Point improves the intensity of mud within the 2m of top layer；Open vavuum pump precompressed → stop vertical short simultaneously with first vavuum pump one and vavuum pump two
The vavuum pump two of drain bar, the vavuum pump one for only starting vertically long drain bar carries out vacuum preloading → stop the true of vertically long drain bar
Empty pump one, only opens the vacuum preloading of vavuum pump two of vertical short drain bar.By such a step clay can be promoted pre- in vacuum
The pressure starting stage synchronous draining compression concretion between vertically long drain bar and vertical short drain bar, prevents from producing " soil on top layer
Post " and make the soil body in 2m depth because moisture content is high, strengthened low intensity processing.Due to inciting somebody to action vertical short drain bar upper surface
Level connection joint is carried out with the horizontal draining board of high water-permeability plastics, the top layer High water cut mud between vertically long drain bar can be made fast
Speed discharge Free water, reduces or prevents top layer clay from being migrated to vertical displacement hull and being attached to vertically long drain bar and vertical short row
On water plate outer layer filter membrane, " earth pillar " formation is prevented, the uniformity for the treatment of is improved, is conducive to avoiding the after-treatment in later stage,
So as to reduce time cost and fund input cost again.
The beneficial effects of the utility model：
1) the pending blowing-filling sludge upper surface of the utility model is equipped with lower geotechnological layer of cloth, artificial downwards from lower geotechnological layer of cloth
Vertically long drain bar and vertical short drain bar are inserted with, vertically long drain bar and vertical short drain bar equidistantly divide in matrix
In original place base under cloth, insertion depth to the pending blowing-filling sludge of the vertically long drain bar, the adjacent vertically long row
Water plate is connected by long slab directly discharging type vacuum pipe, and each long slab directly discharging type vacuum pipe is connected with vavuum pump one, adjacent
The vertical short drain bar is connected by short slab directly discharging type vacuum pipe, and each short slab directly discharging type vacuum pipe is connected with vacuum
It is connected between pump two, the upper surface of the vertical short drain bar with the horizontal draining board of high water-permeability plastics, the horizontal row
Water plate level is laid on above the upper surface of vertical short drain bar, the horizontal draining board and is equipped with geotechnological layer of cloth, upper geotechnique
Two layers of vacuum sealing film, i.e. upper strata vacuum sealing film and lower floor's vacuum sealing film, lower floor's vacuum sealing film are equipped with above layer of cloth
Under be embedded with vacuum meter, two layers of vacuum sealing film surrounding, which is excavated, press mold ditch, and press mold ditch is backfilled with silt clay, one
Aspect is simple in construction, convenient to carry out, on the other hand so as to realize eliminate 2m within depth produced because of directly discharging type vacuum prepressing
Raw place non-uniform phenomenon, it is to avoid the generation of " earth pillar (native stake) "；
2) the utility model carries out vacuum preloading by starting vavuum pump one and vavuum pump two simultaneously, close by above-mentioned vacuum
The vacuum meter buried under sealer reaches more than 80kpa and stablized 15 days~20 days；Vavuum pump two is closed, vavuum pump one is continued into fortune
Row 15 days~20 days, is then shut off vavuum pump one；Finally start vavuum pump two, the vavuum pump two is run after 7 days~10 days
Stopping reaches design requirement, can be rapidly completed the reinforcing of blowing-filling sludge recently in 45 days~50 days using the utility model, from
And time cost and fund input cost again are reduced, it is also prevented from top layer and produces " earth pillar (native stake) " phenomenon, is also beneficial to make
High-moisture percentage mud obtains uniform treatment, is also beneficial to avoid the after-treatment in later stage.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the superficial of blowing-filling sludge recently layer Quick uniform processing method of the utility model；
Fig. 2 is a kind of diagrammatic cross-section of the superficial of blowing-filling sludge recently layer Quick uniform processing structure of the utility model；
Fig. 3 is a kind of top view of the superficial of blowing-filling sludge recently layer Quick uniform processing structure of the utility model.
Embodiment
As shown in figure 1, a kind of layer of blowing-filling sludge superficial recently Quick uniform processing method, pending blowing-filling sludge is located at original
On ground, comprise the following steps：
Step one, pending blowing-filling sludge upper surface is equipped with lower geotechnological layer of cloth, is manually plugged downwards from lower geotechnological layer of cloth
There are vertically long drain bar and vertical short drain bar, vertically long drain bar and vertical short drain bar are in matrix equidistantly distributed, institute
State vertically long drain bar and vertical short drain bar is used between the plastic draining board of SPB-B types, the long drain bar of neighboring vertical
Spacing be 0.8m~0.9m, between the long drain bar of its neighboring vertical spacing be spacing between the long drain bar of neighboring vertical by
Depending on pending blowing-filling sludge top layer ultra-soft soil's water content, it is more than when in pending blowing-filling sludge top layer ultra-soft soil's water content
When 110%, the spacing between the long drain bar of neighboring vertical is 0.8m, when in pending blowing-filling sludge top layer ultra-soft soil's water content
During less than 110%, the spacing between the long drain bar of neighboring vertical is 0.9m, and adjacent hang down is determined by the concrete condition of moisture content
Spacing between straight long drain bar is better able to meet use demand, institute so as to more preferably realize the speed and efficiency of draining
State in the original place base under insertion depth to the pending blowing-filling sludge of vertically long drain bar, the vertical short drain bar, which is inserted, to be waited to locate
1.5m~2.0m in blowing-filling sludge is managed, the insertion depth of vertical short drain bar is by the aqueous of pending blowing-filling sludge top layer ultra-soft soil
Rate, sand content and infiltration coefficient etc. factor as the case may be depending on, specifically pending blowing-filling sludge top layer ultra-soft soil
Moisture content when being more than 110% (moisture content be only more than 110% need to be processed weak soil), take 2.0m when sand content is less than 5%,
Sand content takes 1.5m when being more than 15%, silt content takes any number in 1.5m~2.0m at 5%~15%, and adjacent is described vertical
Straight long drain bar is connected by long slab directly discharging type vacuum pipe, and each long slab directly discharging type vacuum pipe is connected with vavuum pump one,
The adjacent vertical short drain bar is connected by short slab directly discharging type vacuum pipe, each short slab directly discharging type vacuum pipe connection
Have and be connected between vavuum pump two, the upper surface of the vertical short drain bar with the horizontal draining board of high water-permeability plastics, it is high saturating
The horizontal draining board of water-based plastic can be using high water-permeability plastics c-type drain bar or using the filter of permeable, gas permeability circular wave
Pipe is replaced, and the upper surface of vertical short drain bar is laid on by horizontal drainage plate level, make vertical short drain bar control wait locate
Manage the native top of blowing-filling sludge top layer ultra-soft and form horizontal drainage passage, so that the quickly Free water on discharge weak soil top layer, the water
Flat drain bar also can mutually be replaced using horizontal drain pipe, and mode is various, and available leeway is larger, the horizontal drainage plate level
It is laid on above the upper surface of vertical short drain bar, the horizontal draining board and is equipped with geotechnological layer of cloth, above upper geotechnological layer of cloth
It is equipped with two layers of vacuum sealing film, i.e. upper strata vacuum sealing film and lower floor's vacuum sealing film, lower floor's vacuum sealing film and is embedded with
Vacuum meter, two layers of vacuum sealing film surrounding, which is excavated, press mold ditch, and press mold ditch is backfilled with silt clay, wherein vertically long
The drain bar vavuum pump different with vertical short drain bar connection, takes out so as to realize to vertically long drain bar and vertical short drain bar
Vacuum control so that the different upper strata weak soil of moisture content and lower floor's weak soil and slotting vertically long drain bar, vertical short drain bar scope
Weak soil can be controlled with the vavuum pump different time, so as to the preferably convenient operation for carrying out people；
Step 2: starting vavuum pump one and the progress vacuum preloading of vavuum pump two simultaneously, by being buried under above-mentioned vacuum sealing film
If vacuum meter reach more than 80kpa and stablize 15 days~20 days；
Step 3: closing vavuum pump two, vavuum pump one is continued to run with 15 days~20 days, vavuum pump one is then shut off；
Step 4: starting vavuum pump two, the vavuum pump two stops reaching design requirement after running 7 days~10 days, so that
Realize that the uniform reinforcing to pending blowing-filling sludge upper strata High water cut weak soil (1.5m~2.0m) is reinforced.
As shown in Figures 2 and 3, a kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure, pending blowing-filling sludge 1
Between original place base 2, the pending upper surface of blowing-filling sludge 1 is equipped with lower geotechnological layer of cloth 11, from lower geotechnological layer of cloth 11 to
Vertically long drain bar 12 and vertical short drain bar 13 are manually inserted with down, and vertically long drain bar 12 and vertical short drain bar 13 are in
Spacing between matrix equidistantly distributed, the long drain bar 12 of neighboring vertical is by the pending top layer ultra-soft soil of blowing-filling sludge 1
Depending on moisture content, the spacing between the specific long drain bar 12 of neighboring vertical is 0.8m~0.9m, when in pending blowing-filling sludge table
Spacing when layer ultra-soft soil's water content is more than 110% between adjacent vertically long drain bar is 0.8m, is become silted up when in pending hydraulic reclamation
Spacing when mud top layer ultra-soft soil's water content is less than 110% between adjacent vertically long drain bar is 0.9m, passes through moisture content
Concrete condition determines the spacing between the long drain bar of neighboring vertical so as to more preferably realize the speed and efficiency of draining, more
It disclosure satisfy that in the original place base 2 under use demand, insertion depth to the pending blowing-filling sludge 1 of the vertically long drain bar 12,
The vertical short drain bar 13 inserts 1.5m~2.0m in pending blowing-filling sludge 1, and the insertion depth of vertical short drain bar 13 is pressed
The pending top layer ultra-soft soil's water content of blowing-filling sludge 1, sand content and infiltration coefficient etc. factor as the case may be depending on, tool
Body the pending top layer ultra-soft soil's water content of blowing-filling sludge 1 be more than 110% when (moisture content be only more than 110% need locate
The weak soil of reason), sand content takes 2.0m when being less than 5%, sand content takes 1.5m when being more than 15%, and silt content takes at 5%~15%
Any number in 1.5m~2.0m, the adjacent vertically long drain bar 12 is connected by long slab directly discharging type vacuum pipe 121, often
The individual long slab directly discharging type vacuum pipe 121 is connected with vavuum pump 1, and the adjacent vertical short drain bar 13 is straight by short slab
Row's formula vacuum tube 131 is connected, and each short slab directly discharging type vacuum pipe 131 is connected with vavuum pump 2 132, the vertical short row
It is connected between the upper surface of water plate 13 with the horizontal draining board 14 of high water-permeability plastics, the level of horizontal draining board 14 laying
In the upper surface of vertical short drain bar 13, the top of horizontal draining board 14 is equipped with geotechnological layer of cloth 16, upper geotechnological layer of cloth 16
Top is equipped with two layers of vacuum sealing film 17, i.e. upper strata vacuum sealing film and lower floor's vacuum sealing film, lower floor's vacuum sealing film
Vacuum meter is embedded with, the surrounding of two layers of vacuum sealing film 17, which is excavated, press mold ditch 18, press mold ditch 18 is returned with silt clay
Fill out.
Vertically long drain bar 12 and vertical short drain bar 13 in the utility model are in matrix equidistantly distributed, specifically
A square is constituted between the vertically long drain bar 12 for being every row, then square center position is inserted with vertical short draining
Plate 13, thus composition one is quincunx so that the vertical short drain bar 13 of center position arrives the vertically long drain bar 12 on periphery
Apart from equal, blowing-filling sludge superficial layer non-uniform phenomenon is so advantageously reduced, is conducive to avoiding the processing herein in later stage, so that
Reduce time cost and fund input cost again.
Utility model principle
Saturated dredger soft soil is usually stream mud~mud scum, and top layer is almost slime water, with particle is thin and uneven, High water cut
Rate, high-ductility, high-compressibility and extremely low intensity.A large amount of sampling tests of the blast-filled ground after 1 month~3 months show that it contains
Water rate highest in 0.5m~2.0m, up to 110%~150%, is down gradually reduced；Vane shear strength (Cu values) 0.5m~
It is 0 in 2.0m, is down gradually increased to 2kpa~5kpa.This is due to fall the phenomenon produced by silt process blowing-filling sludge early stage.
When being handled using directly discharging type vacuum prepressing, the infiltration produced due to the suction of negative pressure of vacuum in the High water cut soil body
Power, makes clay migrate and be gradually attached on drain bar outer membrane to drain bar, constantly thickeies and unite in row with the growth of time
" earth pillar " is formed around water plate, and prevents the Free water outside " earth pillar " from sucking in vertical drain bar, makes the soil between drain bar
Body can not further discharging consolidation and to ultimately result in basement process uneven.
Many digging in-situ experiments show that the length of " earth pillar " is general in 1.5m~1.6m, in the up big and down small ellipse that falls
Cone shape, upper end diameter 0.5m~0.6m, such as using drain bar spacing as 0.8m, " earth pillar " upper end spacing is 0.2m~0.3m, is blown
It is 0.4m~0.6m to fill out earth pillar depth when mud depth is 1.0m, and earth pillar is 0.8m when blowing-filling sludge depth is 1.5m~1.6m,
Soil body scope between " earth pillar " is the weak band after processing, and place shows as strong, weak alternate inhomogeneities.1.5m~
Below 1.6m drain bars are general, and without clay attachment phenomenon, weak soil discharging consolidation is substantially uniform, and deep intensity is higher than superficial part.For
For blowing-filling sludge place, the purpose of superficial processing is to be formed the working face further constructed, the influence of general construction equipment
Depth is 2m~3m, and this does not reach processing intent because of place top layer heterogeneity caused by " earth pillar " phenomenon.Therefore eliminate
" earth pillar " phenomenon formed by directly discharging type vacuum prepressing has very direct engineering significance.In order to eliminate within 2m depth because in line
Formula vacuum preloading and the place non-uniform phenomenon produced, prevent the generation of " earth pillar ", the utility model is downward from lower geotechnological layer of cloth
Vertically long drain bar and vertical short drain bar are manually inserted with, according to the combination of vertically long drain bar and vertical short drain bar, by force
Change the consolidation of mud and control clay in the 2m of top layer and form " soil on drain bar (vertically long drain bar and vertical short drain bar) top
The Quick uniform processing of post ".The utility model is using vertically long drain bar and vertical short drain bar, vertically long drain bar and vertical
Short drain bar distinguishes corresponding vavuum pump one and vavuum pump two, vertically long to control by different vavuum pumps one and vavuum pump two
The evacuated time of drain bar and vertical short drain bar, so as to realize outside the barged-in fill discharging consolidation of different designs depth, emphasis is carried
The intensity of mud within high top layer 2m；Open vavuum pump precompressed → stop vertical short draining simultaneously with first vavuum pump one and vavuum pump two
The vavuum pump two of plate, the vavuum pump one for only starting vertically long drain bar carries out the vavuum pump of the vertically long drain bar of vacuum preloading → stop
One, only open the vacuum preloading of vavuum pump two of vertical short drain bar.Clay can be promoted at the beginning of vacuum preloading by such a step
The stage beginning synchronous draining compression concretion between vertically long drain bar and vertical short drain bar, prevent from producing on top layer " earth pillar " and
Make the soil body in 2m depth because moisture content is high, strengthened low intensity processing.Due to inciting somebody to action vertical short drain bar upper surface with height
The horizontal draining board (pipe) of water penetration plastics carries out level connection joint, and the top layer High water cut mud between vertically long drain bar can be made fast
Speed discharge Free water, reduces or prevents top layer clay from being migrated to vertical displacement hull and being attached to vertically long drain bar and vertical short row
On water plate outer layer filter membrane, " earth pillar " formation is prevented, the uniformity for the treatment of is improved, is conducive to avoiding the after-treatment in later stage,
So as to reduce time cost and fund input cost again.
The beneficial effects of the utility model：
1) the pending blowing-filling sludge upper surface of the utility model is equipped with lower geotechnological layer of cloth, artificial downwards from lower geotechnological layer of cloth
Vertically long drain bar and vertical short drain bar are inserted with, vertically long drain bar and vertical short drain bar equidistantly divide in matrix
In original place base under cloth, insertion depth to the pending blowing-filling sludge of the vertically long drain bar, the adjacent vertically long row
Water plate is connected by long slab directly discharging type vacuum pipe, and each long slab directly discharging type vacuum pipe is connected with vavuum pump one, adjacent
The vertical short drain bar is connected by short slab directly discharging type vacuum pipe, and each short slab directly discharging type vacuum pipe is connected with vacuum
It is connected between pump two, the upper surface of the vertical short drain bar with the horizontal draining board of high water-permeability plastics, the horizontal row
Water plate level is laid on above the upper surface of vertical short drain bar, the horizontal draining board and is equipped with geotechnological layer of cloth, upper geotechnique
Two layers of vacuum sealing film, i.e. upper strata vacuum sealing film and lower floor's vacuum sealing film, lower floor's vacuum sealing film are equipped with above layer of cloth
Under be embedded with vacuum meter, two layers of vacuum sealing film surrounding, which is excavated, press mold ditch, and press mold ditch is backfilled with silt clay, one
Aspect is simple in construction, convenient to carry out, on the other hand so as to realize eliminate 2m within depth produced because of directly discharging type vacuum prepressing
Raw place non-uniform phenomenon, it is to avoid the generation of " earth pillar (native stake) "；
2) the utility model carries out vacuum preloading by starting vavuum pump one and vavuum pump two simultaneously, close by above-mentioned vacuum
The vacuum meter buried under sealer reaches more than 80kpa and stablized 15 days~20 days；Vavuum pump two is closed, vavuum pump one is continued into fortune
Row 15 days~20 days, is then shut off vavuum pump one；Finally start vavuum pump two, the vavuum pump two is run after 7 days~10 days
Stopping reaches design requirement, can be rapidly completed the reinforcing of blowing-filling sludge recently in 45 days~50 days using the utility model, from
And time cost and fund input cost again are reduced, it is also prevented from top layer and produces " earth pillar (native stake) " phenomenon, is also beneficial to make
High-moisture percentage mud obtains uniform treatment, is also beneficial to avoid the after-treatment in later stage.
Claims (1)
1. a kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure, pending blowing-filling sludge is located on the base of original place, its
It is characterised by, the pending blowing-filling sludge upper surface is equipped with lower geotechnological layer of cloth, is manually inserted with downwards from lower geotechnological layer of cloth
Vertically long drain bar and vertical short drain bar, vertically long drain bar and vertical short drain bar are in matrix equidistantly distributed, described
In original place base under the insertion depth of vertically long drain bar to pending blowing-filling sludge, the adjacent vertically long drain bar passes through
Long slab directly discharging type vacuum pipe is connected, and each long slab directly discharging type vacuum pipe is connected with vavuum pump one, and adjacent is described vertical
Short drain bar is connected by short slab directly discharging type vacuum pipe, and each short slab directly discharging type vacuum pipe is connected with vavuum pump two, institute
It is connected between the upper surface for stating vertical short drain bar with the horizontal draining board of high water-permeability plastics, the horizontal drainage plate level
It is laid on above the upper surface of vertical short drain bar, the horizontal draining board and is equipped with geotechnological layer of cloth, above upper geotechnological layer of cloth
It is equipped with two layers of vacuum sealing film, i.e. upper strata vacuum sealing film and lower floor's vacuum sealing film, lower floor's vacuum sealing film and is embedded with
Vacuum meter, two layers of vacuum sealing film surrounding, which is excavated, press mold ditch, and press mold ditch is backfilled with silt clay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720192137.0U CN206512698U (en) | 2017-03-01 | 2017-03-01 | A kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720192137.0U CN206512698U (en) | 2017-03-01 | 2017-03-01 | A kind of layer of blowing-filling sludge superficial recently Quick uniform processing structure |
Publications (1)
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| CN206512698U true CN206512698U (en) | 2017-09-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677158A (en) * | 2017-03-01 | 2017-05-17 | 杭州亿东岩土工程有限公司 | Recent quick uniform treatment method and structure for blown filled muck shallow strata |
| CN108083610A (en) * | 2018-01-05 | 2018-05-29 | 中交第二航务工程勘察设计院有限公司 | The multiple spot of a kind of mud or mud vacuumizes quick desiccation facility |
-
2017
- 2017-03-01 CN CN201720192137.0U patent/CN206512698U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677158A (en) * | 2017-03-01 | 2017-05-17 | 杭州亿东岩土工程有限公司 | Recent quick uniform treatment method and structure for blown filled muck shallow strata |
| CN106677158B (en) * | 2017-03-01 | 2019-02-22 | 杭州亿东岩土工程有限公司 | A kind of blowing-filling sludge superficial layer Quick uniform processing method and structure recently |
| CN108083610A (en) * | 2018-01-05 | 2018-05-29 | 中交第二航务工程勘察设计院有限公司 | The multiple spot of a kind of mud or mud vacuumizes quick desiccation facility |
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Address after: 311199 1203-1, Building 1, Hehe Fortune Center, Nanyuan Street, Linping District, Hangzhou, Zhejiang Patentee after: Zhejiang Yidong Engineering Technology Co.,Ltd. Address before: 311100 1203, Building 1, Hehe Fortune Center, Nanyuan Street, Yuhang District, Hangzhou, Zhejiang Patentee before: HANGZHOU YIDONG GEOTECHNICAL ENGINEERING Co.,Ltd. |