CN107190726A - A kind of fluid injection pressure charging system handled for super soft ground - Google Patents
A kind of fluid injection pressure charging system handled for super soft ground Download PDFInfo
- Publication number
- CN107190726A CN107190726A CN201710367125.1A CN201710367125A CN107190726A CN 107190726 A CN107190726 A CN 107190726A CN 201710367125 A CN201710367125 A CN 201710367125A CN 107190726 A CN107190726 A CN 107190726A
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- Prior art keywords
- fluid injection
- supercharging
- capsule
- horizontal
- injection supercharging
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- 238000002347 injection Methods 0.000 title claims abstract description 107
- 239000007924 injection Substances 0.000 title claims abstract description 107
- 239000012530 fluid Substances 0.000 title claims abstract description 101
- 239000002689 soil Substances 0.000 claims abstract description 45
- 239000002775 capsule Substances 0.000 claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000012545 processing Methods 0.000 claims abstract description 12
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 9
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 238000007596 consolidation process Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000005086 pumping Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 210000002966 serum Anatomy 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to a kind of fluid injection pressure charging system handled for super soft ground, for in the vacuum pre-press reinforcing processing system with multiple vertical drainage plates 9 that is handled weak soil, super soft ground, including fluid injection supercharging capsule 10, horizontal fluid injection supercharging branch pipe 6, Water filling valve 4, three-way connection, horizontal fluid injection supercharging supervisor 13 and fluid injection supercharging equipment 1.Fluid injection supercharging capsule 10 is made up of the elastomeric material that can transmit fluid pressure, the top of fluid injection supercharging capsule 10 is provided with fluid injection seal 5, top both sides are communicated with water injection pipe 11, and horizontal fluid injection supercharging branch pipe 6 is connected to by water injection pipe 11, Water filling valve 4 is provided with horizontal fluid injection supercharging branch pipe 6, vertical drainage plate 9 is distributed in the periphery that fluid injection is pressurized capsule 10.
Description
Technical field
The present invention provides a kind of in weak soil, super soft ground processing method, the vacuum preloading belonged in Geotechnical Engineering with it is multiple
Close ground joint processing technology.
Background technology
In the last few years, because land resources is in short supply, reclamation engineering receives increasing attention, vacuum method
As a kind of common method for processing foundation, it is widely applied in reclamation engineering.Conventional vacuum method is soft
Soil primary surface laying sand bedding course, sets plastic draining board or sand drain, then make itself and atmospheric isolation, diaphragm seal end with close membrane
Pile things on processing is carried out with soil, by being embedded in the drainage pipeline of sand bedding course, is evacuated using vavuum pump or other vacuum means,
Under negative pressure of vacuum effect, negative pressure is gradually formed in earth's surface sand bedding course and vertical drainage passage, while inside soil body leads to draining
Pressure differential is formed between road, bed course, under this differential pressure action, the pore water around drain bar in weak soil is constantly arranged by drainage channel
Go out, due to the dissipation of soil body Pore Pressure, effective stress increases therewith, and the soil body is gradually consolidated, and intensity also can be carried correspondingly
It is high.
As reclamation engineering is to " waters, particulate, efficiently " development, on the basis of traditional vacuum pre-press reinforcing processing
Various types of corrective measures and method are occurred in that, such as without the in line technique of soft soil foundation treatment of sand, air pressure splitting technique of soft soil foundation treatment, note
Gas supercharging technique of soft soil foundation treatment, electric osmose combined vacuum prestressing technology, preloading combined vacuum prestressing technology etc., these improved technologies exist
Certain effect is achieved in engineer applied.
Although improvement after vacuum preloading method can improve soil stabilization to a certain extent, still suffer from compared with
Many shortcomings：
1) for super soft ground, when carrying out consolidation process using vacuum preloading method, generally early stage displacement
It is larger, drainage effect substantially, to later stage drain bar near particulate mud plug drain bar, vacuum also declines therewith,
Cause later stage drainage rates to be decreased obviously, especially apart from drain bar remotely and deep layer the soil body do not obtain fully plus
Gu, this has had a strong impact on Foundation Treatment Effect.
Although 2) to improve vacuum to a certain extent pre- for the novel evacuated prestressing technology such as electric osmose combined vacuum prestressing technology
The drainage efficiency of pressure and then soil solidifying speed is accelerated, but this methods engineering cost is higher, is difficult to enter in Practical Project
Row is widely applied.
3) vacuum preloading is cleaved using air pressure and injecting gas boosting technique of soft soil foundation treatment carries out stiffening basic ground, in engineering
Found in practical application, however open close pressure inlet of crossing blasts air into soil, just can guarantee that stable draught head, once stop gas
Body is supplied, negative pressure of vacuum reduces, and drainage rates decline immediately, causes soil stabilization not good enough, especially deep ground earth
Consolidation process effect is not fully up to expectations.
The content of the invention
The purpose of the present invention is that the above-mentioned deficiency for overcoming prior art can be applied to weak soil, ultra-soft soil there is provided one kind
The fluid injection pressure charging system of the vacuum pre-press reinforcing processing system of basement process, using the present invention, ensure that drain bar and ground
Steady pressure between soil is poor, improves vacuum preloading discharging consolidation speed.Technical scheme is as follows：
A kind of fluid injection pressure charging system handled for super soft ground, for being handled weak soil, super soft ground
In vacuum pre-press reinforcing processing system, described vacuum pre-press reinforcing processing system includes multiple vertical drainage plates 9, and its feature exists
In,
Described fluid injection pressure charging system includes fluid injection supercharging capsule 10, horizontal fluid injection supercharging branch pipe 6, Water filling valve 4, three and connected
Head, horizontal fluid injection supercharging supervisor 13 and fluid injection supercharging equipment 1, wherein the fluid injection is pressurized the main body of capsule 10 to transmit liquid
Fluid injection seal 5 is provided with the top of the elastic sack body of pressure, elastic sack body, top both sides are communicated with water injection pipe 11, and pass through
Water injection pipe 11 is connected to horizontal fluid injection supercharging branch pipe 6, is provided with Water filling valve 4 on horizontal fluid injection supercharging branch pipe 6, each transverse direction
Fluid injection is pressurized branch pipe 6 by being connected by horizontal fluid injection supercharging supervisor 13 with fluid injection supercharging equipment 1, and vertical drainage plate 9 is distributed
The periphery of capsule 10 is pressurized in fluid injection；
Preferably, the buried depth of fluid injection supercharging capsule 10 is higher than the insertion depth 0.5-1m of vertical drainage plate.
The present invention operation principle be:Conventional vacuum preloading method is improved first, by vaccum-pumping equipment to the soil body
While applying vacuum negative pressure, it is pressurized to the fluid injection set in advance in capsule and injects moisture, capsule is pressurized to surrounding soil by fluid injection
Hydraulic pressure is transmitted, the pressure differential between drain bar and foundation soil is significantly increased, and then improves the drainage rates of soft soil foundation, is promoted
The depth shallow-layer soil body completes discharging consolidation.
The present invention is directed to conventional vacuum pre-pressed soft soil foundation reinforcement technique feature, compared with prior art with following excellent
Point：
1 construction method is simple and easy to apply, easy construction, while construction quality is ensured, can substantially speed up soft soil foundation
Reinforcing process.
2 are compared close with conventional vacuum preloading method, and fluid injection supercharging technology can be significantly increased between drain bar and foundation soil
Pressure differential, it is possible to it is lasting to ensure stable pressure differential, accelerate draining to be simultaneously more beneficial for pore pressure dissipation, accelerate soft soil foundation
Consolidation rate, improve efficiency of construction.
Brief description of the drawings
Fig. 1 is the overall structure diagram of vacuum pre-press reinforcing processing system.
Fig. 2 is transverse drainage system and horizontal fluid injection supercharging system schematic diagram.
Fig. 3 is that fluid injection is pressurized capsule organigram.
Fig. 4 is vertical drainage plate and vertical fluid injection supercharging system arrangement schematic diagram.
Label declaration in figure:1st, fluid injection supercharging equipment；2nd, vaccum-pumping equipment；3rd, sealing system；4 Water filling valves；5th, fluid injection
Seal；6th, horizontal fluid injection supercharging branch pipe；7th, horizontal branch；8th, bowknot；9th, vertical drainage plate；10th, fluid injection supercharging capsule；
11st, water injection pipe；12nd, three-way connection；13rd, horizontal fluid injection supercharging supervisor；14th, transverse drainage is responsible for；15th, Grouting Pipe.
Embodiment
Referring to Fig. 1-4, vacuum liquid filling supercharging joint deep layer injected foundation processing method, the drainage system used includes perpendicular
To drain bar 9, bowknot 8, horizontal branch 7, the transverse drainage of three-way connection 12 supervisor 14 and vaccum-pumping equipment 2, wherein perpendicular
It is connected and connects with horizontal branch 7 by bowknot 8 to drain bar 9, horizontal branch 14 is further through three-way connection 12
It is connected with transverse drainage supervisor 14, transverse drainage supervisor 14 finally connects with vaccum-pumping equipment 2.Wherein, vertical drainage plate 9 is by just
Square arrangement, deep layer fluid injection supercharging capsule 10 is laid in the center of square, and the spacing 0.8-2.0m of vertical drainage plate 9, fluid injection increases
The buried depth of capsule 10 is pressed to be higher than the insertion depth 0.5-1m of vertical drainage plate.
The fluid injection pressure charging system of the present invention includes fluid injection supercharging capsule 10, horizontal fluid injection supercharging branch pipe 6, Water filling valve 4, threeway
Joint 12, horizontal fluid injection supercharging supervisor 13 and fluid injection supercharging equipment 1.Wherein described fluid injection is pressurized capsule 10 by lightweight latex material system
Into fluid pressure can be transmitted, fluid injection supercharging capsule 10 top both sides are equipped with water injection pipe 11, and connect horizontal note by water injection pipe 11
Liquid is pressurized branch pipe 6.Horizontal fluid injection supercharging branch pipe 6 end is equipped with Water filling valve 4, wherein Water filling valve 4 and the phase of fluid injection supercharging equipment 1
UNICOM.Enough water is pre-charged with the fluid injection supercharging equipment 1, is treated in soil after vacustat, fluid injection supercharging is opened and sets
Standby 1, fluid injection seal 5 is closed, while open Water filling valve 4, water 1 passes sequentially through horizontal fluid injection supercharging from fluid injection supercharging equipment
Supervisor 13, horizontal fluid injection supercharging branch pipe 6 are injected into fluid injection supercharging capsule 10, and then the soil body near fluid injection supercharging capsule 10 is received
The extra liquid pressure of application, increases the pressure differential between drain bar and foundation soil, this pressure differential is relatively stable, so as to carry
The high discharging consolidation speed of vacuum preloading, after fluid injection supercharging terminates, closes Water filling valve 4, simultaneously closes off fluid injection supercharging
Equipment 1.
After vacuum liquid filling supercharging construction terminates, the fluid injection seal 5 that fluid injection supercharging capsule 10 top is set is opened, is increased to fluid injection
Press and Grouting Pipe 15 is inserted in capsule 10, and the cement grout being stirred in advance is injected into Grouting Pipe 15, slurries are filled into fluid injection increasing
Press after capsule 10, because the density of water is less than serum density, water will be discharged by fluid injection seal 5, and material is thus formed a note
Reinforcing body stake is starched, while with the soil body for being pressed further by surrounding of slip casting, also changing soil body physico-mechanical properties, carrying
The high bearing capacity of soft soil foundation.Wherein Grouting Pipe 15 can be from main regulation height.
Whole vacuum liquid filling supercharging combines method for processing foundation with deep layer slip casting, comprises the following steps:
First, it is the arrangement of apparatus first with connecting.After weak soil or the native top layer of ultra-soft lay one layer of woven cloth, it
After set vertical drainage plate 9 and vertical fluid injection supercharging capsule 10, vertical drainage plate 9 is connected with horizontal branch 7, general transverse direction
Branch drain 7 and transverse drainage supervisor 14 connects, and vertical fluid injection is pressurized into capsule 10 and horizontal fluid injection afterwards is pressurized branch pipe 6, laterally
Fluid injection is pressurized the UNICOM successively of supervisor 13, and two layers of woven cloth of laying, one layer of geotextiles, one layer of diaphragm seal constitute sealing system 3, finally
Transverse drainage supervisor 14 is assembled with vaccum-pumping equipment 2, horizontal fluid injection supercharging supervisor 13 and the UNICOM of fluid injection supercharging equipment 1.
2nd, vacuum liquid filling pressurization stages.Vaccum-pumping equipment 2 is opened, after after the vacustat in barged-in fill, water filling is opened
Valve 4, opens fluid injection supercharging equipment 1, and water is pressurized system by horizontal fluid injection and is injected into fluid injection supercharging capsule 10, fluid injection is pressurized
The soil body around capsule 10 applies hydraulic pressure, increases the pressure differential between drain bar and foundation soil, and then improve the row of soft soil foundation
Water speed rate, promotes depth layer soil body to complete discharging consolidation.
3rd, after vacuum liquid filling pressurization stages terminate, fluid injection supercharging equipment 1 is closed down, Water filling valve 4, simultaneously is simultaneously closed off
The fluid injection seal 5 that fluid injection supercharging capsule 10 top is set is opened, is pressurized to fluid injection in capsule 10 and inserts Grouting Pipe 15, and to Grouting Pipe
The cement grout being stirred in advance is injected in 15, because the density of water is less than serum density, water will pass through the row of fluid injection seal 5
Go out, after slurries are filled into fluid injection supercharging capsule 10, form a slip casting pile body, enhance the intensity of deep soil, improve
The bearing capacity of soft soil foundation.
4th, after reinforced soft soil ground effect produces a desired effect, withdrawing for vacuum unloading and equipment is carried out.
Claims (2)
1. a kind of fluid injection pressure charging system handled for super soft ground, true for what is handled weak soil, super soft ground
In empty ground preloading processing system, described vacuum pre-press reinforcing processing system includes multiple vertical drainage plates 9, and its feature exists
In,
Described fluid injection pressure charging system includes fluid injection supercharging capsule (10), horizontal fluid injection supercharging branch pipe (6), Water filling valve (4), threeway
Joint, horizontal fluid injection supercharging supervisor (13) and fluid injection supercharging equipment (1), wherein the main body of fluid injection supercharging capsule (10) is can be with
Transmit and be provided with fluid injection seal (5) at the top of the elastic sack body of fluid pressure, elastic sack body, top both sides are communicated with water injection pipe
(11), and horizontal fluid injection is connected to by water injection pipe (11) and is pressurized branch pipe (6), be provided with horizontal fluid injection supercharging branch pipe (6)
Water filling valve (4), each horizontal fluid injection supercharging branch pipe (6) is by passing through horizontal fluid injection supercharging supervisor (13) and fluid injection supercharging equipment
(1) it is connected, vertical drainage plate (9) is distributed in the periphery of fluid injection supercharging capsule (10).
2. fluid injection pressure charging system according to claim 1, it is characterised in that the buried depth of fluid injection supercharging capsule is higher than vertical
The insertion depth 0.5-1m of drain bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367125.1A CN107190726A (en) | 2017-05-23 | 2017-05-23 | A kind of fluid injection pressure charging system handled for super soft ground |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710367125.1A CN107190726A (en) | 2017-05-23 | 2017-05-23 | A kind of fluid injection pressure charging system handled for super soft ground |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107190726A true CN107190726A (en) | 2017-09-22 |
Family
ID=59874864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710367125.1A Pending CN107190726A (en) | 2017-05-23 | 2017-05-23 | A kind of fluid injection pressure charging system handled for super soft ground |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107190726A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53144115A (en) * | 1977-05-20 | 1978-12-15 | Nissan Constr | Method of improving sludge of high water content and weak ground |
| JP2003293355A (en) * | 2002-04-01 | 2003-10-15 | Maeda Corp | Improving method of ground |
| WO2008064550A1 (en) * | 2006-12-01 | 2008-06-05 | Shanghai Harbour Soft Soil Treatment Engineering Co. Ltd. | Information method combined with dynamic consolidation and vacuum drainage for reinforcement of soft soil ground |
| CN204059124U (en) * | 2014-08-06 | 2014-12-31 | 冠鲁建设股份有限公司 | A kind of sand drain strong rammer grouting behind shaft or drift lining foundation reinforcing structure |
| CN106284277A (en) * | 2016-08-22 | 2017-01-04 | 南京新都地下工程研究院有限公司 | A kind of air sac pressing draining combined vacuum precompressed foundation reinforcement method |
| CN206815314U (en) * | 2017-05-23 | 2017-12-29 | 天津大学 | Fluid injection pressure charging system for super soft ground processing |
-
2017
- 2017-05-23 CN CN201710367125.1A patent/CN107190726A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53144115A (en) * | 1977-05-20 | 1978-12-15 | Nissan Constr | Method of improving sludge of high water content and weak ground |
| JP2003293355A (en) * | 2002-04-01 | 2003-10-15 | Maeda Corp | Improving method of ground |
| WO2008064550A1 (en) * | 2006-12-01 | 2008-06-05 | Shanghai Harbour Soft Soil Treatment Engineering Co. Ltd. | Information method combined with dynamic consolidation and vacuum drainage for reinforcement of soft soil ground |
| CN204059124U (en) * | 2014-08-06 | 2014-12-31 | 冠鲁建设股份有限公司 | A kind of sand drain strong rammer grouting behind shaft or drift lining foundation reinforcing structure |
| CN106284277A (en) * | 2016-08-22 | 2017-01-04 | 南京新都地下工程研究院有限公司 | A kind of air sac pressing draining combined vacuum precompressed foundation reinforcement method |
| CN206815314U (en) * | 2017-05-23 | 2017-12-29 | 天津大学 | Fluid injection pressure charging system for super soft ground processing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170922 |
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| RJ01 | Rejection of invention patent application after publication |