CN107245998A - A kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base - Google Patents
A kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base Download PDFInfo
- Publication number
- CN107245998A CN107245998A CN201710519398.3A CN201710519398A CN107245998A CN 107245998 A CN107245998 A CN 107245998A CN 201710519398 A CN201710519398 A CN 201710519398A CN 107245998 A CN107245998 A CN 107245998A
- Authority
- CN
- China
- Prior art keywords
- vacuum
- cocoanut shell
- filling
- ditch
- sand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 235000013162 Cocos nucifera Nutrition 0.000 title claims abstract description 25
- 244000060011 Cocos nucifera Species 0.000 title claims abstract description 24
- 239000002689 soil Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007664 blowing Methods 0.000 title claims abstract description 8
- 239000004576 sand Substances 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000008901 benefit Effects 0.000 claims abstract description 7
- 238000005086 pumping Methods 0.000 claims abstract description 7
- 238000013461 design Methods 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract 2
- 239000004746 geotextile Substances 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000001467 acupuncture Methods 0.000 claims description 2
- 238000000605 extraction Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 239000000523 sample Substances 0.000 claims description 2
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000010410 layer Substances 0.000 claims 5
- 238000009958 sewing Methods 0.000 claims 3
- 239000004927 clay Substances 0.000 claims 2
- 239000011229 interlayer Substances 0.000 claims 2
- 241001232787 Epiphragma Species 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 claims 1
- 230000008595 infiltration Effects 0.000 claims 1
- 238000001764 infiltration Methods 0.000 claims 1
- 239000002362 mulch Substances 0.000 claims 1
- 239000002985 plastic film Substances 0.000 claims 1
- 229920006255 plastic film Polymers 0.000 claims 1
- 241000894007 species Species 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract 1
- 230000007797 corrosion Effects 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 230000000747 cardiac effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 241000737241 Cocos Species 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 235000013599 spices Nutrition 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
-
- 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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Landscapes
- 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)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base.This method process includes：1）Cocoanut shell is admixed in storing bin；2）By the mixture hydraulic reclamation of barged-in fill and cocoanut shell to designed elevation；3）One layer of 20cm sand bedding course is laid above and drain bar is set；4）Lay 30cm middle level sand bedding courses and embedded vacuum pipe network；5）Sealing ditch is excavated, diaphragm seal is laid；6）Examination vacuumizes and checks whether gas leakage；7）Continue to be pumped to settlement stability under pumping is stable；8）Benefit is banketed to design altitude.It is an advantage of the current invention that having recycled cocoanut shell as packing material, cocoanut shell has the performances such as intensity highly corrosion resistant, mixes the stability and intensity that soil is added in filling soil, a large amount of that the use of filling soil can be reduced using cocoanut shell, is conducive to cost-effective.
Description
Technical field
The present invention relates to a kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base, barged-in fill is primarily adapted for use in
The processing of ground, belongs to Soft Ground field.
Background technology
Marine reclamation land refers to original marine site, lake region or riverbank to be changed into land by artificial technology's means.To Yushan Hill
More few coastal cities, marine reclamation land is a kind of method that development for the city confined space plays an important role.Holland is certainly
Begin to enclose extra large made ground on a large scale from 13rd century, nowadays the artificial sea of filling out of the 20% of Dutch territory is created." hills is all dug
Go to fill out sea and go, Fu Laifulan, which is saved, almost creates what is come ", therefore have the title of " God makes sea, Dutchman's epeirogenetic ".Japan is individual
Archipelago country, territory is narrow and small, populous.After World War II between more than 50 years, Japanese's reclaiming land around sea reaches 200km2, phase
When in the area of 2.6 Hong Kong Islands.China's Perioperative cardiac events activity since last century five, the sixties, to last century Mo, littoral
Area's Perioperative cardiac events make ground area up to 1.2 ten thousand km2, the km of Perioperative cardiac events 230 to 240 every year on average2.The many level lands in Hong Kong mountain are few, perfume (or spice) in 1842
The sandstone for building queen main road are promoted sea by port first, and the just continuous marine reclamation land of later Hong Kong over more than 100 years, fills out sea product
Up to 67 km2, Hong Kong gross area is accounted for more than 6%.
The primary raw material of sea reclamation is sandstone, and significant wastage consumes substantial contribution, the particularly Nanhai area, sandstone money
Source is extremely limited, and the Nanhai area produces a large amount of cocoanut shells every year, and high with intensity, and compressive property is good.The present invention applies coconut palm
Sub- shell filling barged-in fill carrys out sea reclamation, not only saves great amount of cost, and cocoanut shell is distributed in filling soil can improve soil
Shearing strength.
The content of the invention
Object of the present invention is to provide a kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base, the party
Method has low cost, the advantages of constructing simple.
The present invention is realized by the following technical scheme.A kind of cocoanut shell filling combined vacuum prepressing blowing filling soil
The method of base, it is characterised in that including procedure below：1）Cocoanut shell is admixed in feeding chamber；2）By the mixed of barged-in fill and cocoanut shell
Compound hydraulic reclamation is to designed elevation；3）One layer of 20cm sand bedding course is laid above and drain bar is set；4）Lay 30cm middle levels sand pad
Layer and embedded vacuum pipe network；5）Sealing ditch is excavated, diaphragm seal is laid；6）Examination vacuumizes and checks whether gas leakage；7）Pumping is stable
Under continue to be pumped to settlement stability；8）Benefit is banketed to design altitude.
The advantage of the invention is that：Construction is simple, saves a large amount of sandstones, meets engineering construction needs, saves construction
Cost, while greatly strengthen foundation strength.
Brief description of the drawings
Fig. 1 conveys layout drawing for the cocoanut shell and barged-in fill of the present invention；
Fig. 2 is vacuum pre-press reinforcing layout drawing of the invention；
In figure：1- sand carriers, 2- hydraulic reclamation sandy soil, 3- conveyance conduits, 4- barged-in fill delivery pumps, 5- feeding chambers, 6- hydraulic reclamation soil blocks, 7-
Lower floor's sand bedding course, 8- upper stratas sand bedding course, 9- vacuum diaphragms, 10- sealing ditches, 11- vertical drainage plates.
Embodiment
Cocoanut shell is admixed in storing bin.
By the mixture hydraulic reclamation of barged-in fill and cocoanut shell to designed elevation.
Laid above and one layer of 20cm sand bedding course and set drain bar, plastic draining board uses Type B plate, construction depth 20m,
Spacing 1.2m, equilateral triangle（It is quincunx）Arrangement.Set perpendicularity deviation control in ± 1.5%, every rewind it is of length no more than
50cm, otherwise should immersed tube plate again, embedment sand bedding course length is not less than 0.3m at the top of plastic strip plate.
30cm middle level sand bedding courses and embedded vacuum pipe network are laid, vacuum tube is selected reinforcement PVC plastic expects pipe, is responsible for as φ
75mm, branch pipe is φ 50mm, it is desirable to which the intensity of PVC can bear 400kPa pressure.It is responsible for spacing 25m or so, filter pipe
Array pitch 6m or so, distance of the outermost layer filter pipe away from place side is 2~5m.Led between supervisor and branch chimney filter with reducing tee and four
Connect.
Sealing ditch is excavated, diaphragm seal is laid.（1）Diaphragm seal is fixed in advance by manufacturer according to vacuum preloading area size
Process, the size of view picture diaphragm seal will ensure that disposable all whole vacuum preloading areas of covering.The size of film during processing
Consider the part of embedment sealing ditch, leave enough have more than needed.Diaphragm seal seam is firmly bonded, and flat lap side seam width is met in double heat seals
It cannot be less than 15mm.（2）Sand bedding course surface should be smooth before vacuum preloading, and surface is without sharp stone, lump and other sharp debris.Sealing
When film is laid, the particle such as the intermembranous sand do not cleaned out, stone, which wears out film, when need to prevent from vacuumizing causes gas leakage.（3）In order to
Vacuum diaphragm is protected, one layer of 250g/m is respectively laid up and down in vacuum diaphragm2Acupuncture nonwoven geotextiles.Treat vacuum line, vacuum probe and
After other observation instruments have been buried, first layer geotextiles are being laid thereon, laying area is slightly less than diaphragm seal（Receive 2~3m of side）,
Lay scope and be slightly larger than stabilization zone, 1m is about widened per side.
Examination vacuumizes and checks whether gas leakage.After every vaccum-pumping equipment placement is in place, proceeds by examination and vacuumize.Start
The speed of stage control vacuum pressed, to extract the air in sand bedding course out, vacuum pressure increases step by step from 20kPa, with film
Vacuum gradually increases and stably on 80kPa in the discharge of air and the raising of soil layer discharging consolidation degree, film.Starting to take out
Vacuum stages, with the discharge of air and water, check diaphragm seal comprehensively and seal the sealing state of ditch, if any gas leakage, to gas leakage
Part repairing in time and sealing, prevent from influenceing vacuum effectiveness.
Continue to be pumped to settlement stability under pumping is stable.Under conditions of under-membrance vacuum degree is stably maintained at more than 80kPa,
After the completion of continuous air extraction, roadbed filling, the continuous 10d average settlements amount of actual measurement surface subsidence speed is less than or equal to 2mm/d, you can
Termination of pumping is unloaded.
Benefit is banketed to design altitude.
Claims (5)
1. a kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base, it is characterised in that：Cocoanut shell is mixed in and filled
In banketing, the mixture of cocoanut shell and filling soil is fills up to design altitude, and discharging consolidation is carried out with vacuum method, it is led
Step is wanted to have：1）Cocoanut shell is admixed in storing bin；2）By the mixture hydraulic reclamation of barged-in fill and cocoanut shell to designed elevation；3）
One layer of 20cm sand bedding course is laid above and sets drain bar；4）Lay 30cm middle level sand bedding courses and embedded vacuum pipe network；5）Excavate
Ditch is sealed, diaphragm seal is laid；6）Examination vacuumizes and checks whether gas leakage；7）Continue to be pumped to settlement stability under pumping is stable；8）
Benefit is banketed to design altitude.
2. a kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base according to claims 1, its feature
It is in step 3 that sand bedding course sand material uses medium coarse sand, clay content（Particle diameter is less than 0.075mm fine grained）Less than 5%, infiltration system
Number is not less than 2 × 10-2Cm/s, it is ensured that horizontal drainage effect, plastic draining board use Type B plate, construction depth 20m, spacing 1.2m,
Equilateral triangle（It is quincunx）Arrangement, sets perpendicularity deviation control in ± 1.5%, every rewinds of length no more than 50cm, otherwise
Embedment sand bedding course length at the top of immersed tube plate again, plastic strip plate is answered to be not less than 0.3m.
3. Vacuum Drainage pipe selects reinforcement PVC plastic expects pipe in step 4 according to claim 1, it is responsible for as φ 75mm, branch pipe is
φ 50mm, it is desirable to the intensity of PVC can bear non-woven geotextile in 400kPa pressure, step 5, the thickness of diaphragm seal, thoroughly
Gas performance, tensile strength, species, specification and performance should meet in design requirement, step 5 seal ditch have to comply with epiphragma hold one's breath will
Ask, excavated using hand fit's excavator, 0.8~1.0m of ditch bottom width or so, ditch depth 1.5m~2.0m, with digging with paving with filling out, with
Long 20m of ditch or so be a work section promote successively, slope collapse is prevented during excavation, the mound dug out during plastic film mulch in outside just
On road, it must not pile up on sand bedding course, it is to avoid sand grains is slipped into ditch, the clay backfilled in ditch wants closely knit and is not mingled with sandstone, if
Bottom of trench or both sides are sealed with the presence of the interlayer of the good penetrabilities such as rubble or layer of sand, the interlayer are excavated totally, and backfill weak soil.
4. step 5 respectively lays one layer of 250g/m up and down in order to protect vacuum diaphragm in vacuum diaphragm according to claim 12Acupuncture without
Geotextiles are spun, after vacuum line, vacuum probe and other observation instruments have been buried, first layer geotextiles, paving are being laid thereon
If area is slightly less than diaphragm seal（Receive 2~3m of side）, laying scope is slightly larger than stabilization zone, 1m is about widened per side, according to place situation,
Geotextiles are deployed in certain direction and lay smooth, geotextiles overlapping part is carried out with portable sewing machine using sewing up processing
Sew up, lap width is no less than 30mm when sewing up.
5. carry out examination in step 6 according to claim 1 to vacuumize, incipient stage control vacuum pressed speed, to extract sand out
Air in bed course, vacuum pressure increases step by step from 20kPa, with carrying for the discharge of air under film and soil layer discharging consolidation degree
Vacuum gradually increases and stably on 80kPa in height, film, is starting vacuumizing phase, with the discharge of air and water, entirely
Face checks diaphragm seal and seals the sealing state of ditch, if any gas leakage, to the repairing in time of gas leakage part and sealing, prevents from influenceing vacuum
In effect, step 7 under conditions of under-membrance vacuum degree is stably maintained at more than 80kPa, continuous air extraction, after the completion of roadbed filling,
Survey the continuous 10d average settlements amount of surface subsidence speed and be less than or equal to 2mm/d, you can termination of pumping is unloaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519398.3A CN107245998B (en) | 2017-06-30 | 2017-06-30 | A kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519398.3A CN107245998B (en) | 2017-06-30 | 2017-06-30 | A kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107245998A true CN107245998A (en) | 2017-10-13 |
| CN107245998B CN107245998B (en) | 2019-10-18 |
Family
ID=60014683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710519398.3A Active CN107245998B (en) | 2017-06-30 | 2017-06-30 | A kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776877A (en) * | 2012-08-22 | 2012-11-14 | 吉林大学 | Stepped vacuum drainage consolidation method for ultra-soft soil foundation |
| CN103388330A (en) * | 2013-07-31 | 2013-11-13 | 河海大学 | Pump drainage type vacuum preloading soft foundation strengthening method |
| CN103643672A (en) * | 2013-11-12 | 2014-03-19 | 浙江江南春建设集团有限公司 | Vacuum preloading foundation treatment construction method |
| CN104047281A (en) * | 2014-06-30 | 2014-09-17 | 洛阳广鑫建设集团有限公司 | Construction method for vacuum combined preloading consolidated foundation |
| CN106048886A (en) * | 2016-07-19 | 2016-10-26 | 广东浚丰华科技有限公司 | Plant-fiber ecological felt and preparation method thereof |
-
2017
- 2017-06-30 CN CN201710519398.3A patent/CN107245998B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776877A (en) * | 2012-08-22 | 2012-11-14 | 吉林大学 | Stepped vacuum drainage consolidation method for ultra-soft soil foundation |
| CN103388330A (en) * | 2013-07-31 | 2013-11-13 | 河海大学 | Pump drainage type vacuum preloading soft foundation strengthening method |
| CN103643672A (en) * | 2013-11-12 | 2014-03-19 | 浙江江南春建设集团有限公司 | Vacuum preloading foundation treatment construction method |
| CN104047281A (en) * | 2014-06-30 | 2014-09-17 | 洛阳广鑫建设集团有限公司 | Construction method for vacuum combined preloading consolidated foundation |
| CN106048886A (en) * | 2016-07-19 | 2016-10-26 | 广东浚丰华科技有限公司 | Plant-fiber ecological felt and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107245998B (en) | 2019-10-18 |
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Effective date of registration: 20240103 Address after: 251200 east of Yingbin Avenue, national high tech Industrial Development Zone, Dezhou City (Yucheng), Shandong Province Patentee after: Shandong Rui HSI Technology Co.,Ltd. Address before: 266590 No. 579, Qian Wan Gang Road, Qingdao economic and Technological Development Zone, Shandong Patentee before: SHANDONG University OF SCIENCE AND TECHNOLOGY |
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