CN107245998B - 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
- CN107245998B CN107245998B CN201710519398.3A CN201710519398A CN107245998B CN 107245998 B CN107245998 B CN 107245998B CN 201710519398 A CN201710519398 A CN 201710519398A CN 107245998 B CN107245998 B CN 107245998B
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- Prior art keywords
- vacuum
- cocoanut shell
- laid
- filling
- film
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- 235000013162 Cocos nucifera Nutrition 0.000 title claims abstract description 27
- 244000060011 Cocos nucifera Species 0.000 title claims abstract description 26
- 239000002689 soil Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000007664 blowing Methods 0.000 title claims abstract description 10
- 239000004576 sand Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 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 10
- 238000010276 construction Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 238000001467 acupuncture Methods 0.000 claims description 3
- 238000007596 consolidation process Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000000605 extraction Methods 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 8
- 238000009958 sewing Methods 0.000 claims 3
- 238000009412 basement excavation Methods 0.000 claims 2
- 239000004927 clay Substances 0.000 claims 2
- 239000011229 interlayer Substances 0.000 claims 2
- 241001232787 Epiphragma Species 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
- 230000035699 permeability Effects 0.000 claims 1
- 239000002985 plastic film Substances 0.000 claims 1
- 229920006255 plastic film Polymers 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 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
- 239000004575 stone Substances 0.000 description 2
- 241000737241 Cocos Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 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
- 238000005728 strengthening Methods 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 methods of cocoanut shell filling combined vacuum prepressing blowing filling soil base.This method process includes: 1) to admix cocoanut shell in storing bin；2) by the mixture hydraulic reclamation of barged-in fill and cocoanut shell to designed elevation；3) it is laid with one layer of 20cm sand bedding course above and sets drain bar；4) middle layer 30cm sand bedding course and embedded vacuum pipe network are laid with；5) sealing ditch is excavated, sealing film is laid with；6) examination vacuumizes and checks whether gas leakage；7) pumping continues to be pumped to settlement stability under stablizing；8) it mends and bankets 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 increased in filling soil, and a large amount of uses that filling soil can be reduced using cocoanut shell are conducive to save the cost.
Description
Technical field
The present invention relates to a kind of methods of cocoanut shell filling combined vacuum prepressing blowing filling soil base, are primarily adapted for use in barged-in fill
The processing of ground belongs to Soft Ground field.
Background technique
Marine reclamation land, which refers to, is changed into land by artificial technology's means original sea area, lake region or riverbank.To Yushan Hill
Mostly few coastal cities, marine reclamation land are a kind of methods that the development for the city confined space plays an important role.Holland is certainly
It begins to enclose extra large made ground on a large scale from 13rd century, nowadays the 20% of Dutch territory is manually filled out sea and created." hills is all dug
Go to fill out sea and go, Fu Laifulan, which is saved, almost to be createed ", therefore have the title of " god makes sea, Dutchman's epeirogenetic ".Japan is
Archipelago country, territory is narrow, 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, every year on average Perioperative cardiac events 230 to 240km2.The more level lands in Hong Kong mountain are few, perfume (or spice) in 1842
The sandstone for building queen main road are promoted sea for the first time by port, and the just continuous marine reclamation land of later Hong Kong over more than 100 years, fills out sea product
67km2 is reached, accounting for Hong Kong gross area is more than 6%.
The primary raw material of sea reclamation is sandstone, and significant wastage consumes substantial contribution, the especially Nanhai area, sandstone money
Source is extremely limited, and the Nanhai area generates a large amount of cocoanut shells every year, and has intensity height, 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, but also cocoanut shell is distributed in filling soil that soil can be improved
Shearing strength.
Summary of the invention
The 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 many advantages, such as low cost, construction is 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 following procedure: 1) cocoanut shell is admixed in feeding chamber；2) by the mixed of barged-in fill and cocoanut shell
Object hydraulic reclamation is closed to designed elevation；3) it is laid with one layer of 20cm sand bedding course above designed elevation in step 2 and sets drain bar；4)
It is laid with the middle layer 30cm sand bedding course and embedded vacuum pipe network；5) sealing ditch is excavated, sealing film is laid with；6) examination is vacuumized and is checked whether
Gas leakage；7) pumping continues to be pumped to settlement stability under stablizing；8) it mends and bankets to design altitude.
The present invention has the advantages that construction is simple, saves a large amount of sandstones, meet engineering construction needs, saves construction
Cost, while greatly strengthening foundation strength.
Detailed description of the invention
Fig. 1 is cocoanut shell of the invention and barged-in fill conveying arrangement figure；Fig. 2 is that vacuum pre-press reinforcing of the invention is arranged
Figure；In figure: 1- sand carrier, 2- hydraulic reclamation sandy soil, 3- conveyance conduit, 4- barged-in fill delivery pump, 5- feeding chamber, 6- hydraulic reclamation soil block, 7-
Lower layer's sand bedding course, the upper layer 8- sand bedding course, 9- vacuum diaphragm, 10- seal ditch, 11- vertical drainage plate.
Specific embodiment
Cocoanut shell is admixed in storing bin.
By the mixture hydraulic reclamation of barged-in fill and cocoanut shell to designed elevation.
It being laid with above and one layer of 20cm sand bedding course and sets drain bar, plastic draining board uses Type B plate, construction depth 20m,
Spacing 1.2m, equilateral triangle arrangement.Perpendicularity deviation control is set in ± 1.5%, every rewinds of length no more than 50cm, no
Then immersed tube plate, plastic strip plate top embedment sand bedding course length it should be not less than 0.3m again.
It is laid with the middle layer 30cm sand bedding course and embedded vacuum pipe network, vacuum tube is selected reinforcement PVC plastic pipe, be responsible for as φ
75mm, branch pipe are φ 50mm, it is desirable that the intensity of PVC pipe can bear the pressure of 400kPa.It is responsible for spacing 25m, filter pipe array pitch
6m, distance of the outermost layer filter pipe away from place side are 2~5m.Supervisor is connected between branch chimney filter with reducing tee with four-way.
Sealing ditch is excavated, sealing film is laid with.(1) sealing film is fixed in advance by manufacturer according to vacuum preloading area size
It processes, the size of whole picture sealing film is wanted to guarantee disposable all entire vacuum preloading areas of covering.The size of film when processing
The part for considering embedment sealing ditch, there are enough more than needed.Sealing film 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 is answered smooth before vacuum preloading, and surface is without sharp stone, lump and other sharp sundries.Sealing
When film is laid with, the particles such as sand, stone for not cleaning out between film when need to prevent from vacuumizing, which wear out film, causes gas leakage.(3) in order to
Vacuum diaphragm is protected, is respectively laid with one layer of 250g/m2 acupuncture nonwoven geotextiles up and down in vacuum diaphragm.To vacuum line, vacuum probe and
After other observation instruments have been buried, be laid with first layer non-woven geotextile on it, the first layer non-woven geotextile receive side 2~
3m is laid with area and is less than sealing film, is laid with range and is greater than stabilization zone, 1m is widened on every side.
Examination vacuumizes and checks whether gas leakage.After every vaccum-pumping equipment placement is in place, start try vacuumizing.Start
The rate of stage control vacuum pressed, to extract the air in sand bedding course out, vacuum pressure increases step by step from 20kPa, under film
The discharge of air and the raising of soil layer discharging consolidation degree, vacuum degree is gradually increased and stablizes on 80kPa in film.Starting to take out
Vacuum stages check sealing film comprehensively and seal the sealing state of ditch, if any gas leakage, to gas leakage with the discharge of air and water
Part repairing in time and sealing, prevent from influencing vacuum effectiveness.
Pumping continues to be pumped to settlement stability under stablizing.Under conditions of under-membrance vacuum degree is stably maintained at 80kPa or more,
Continuous air extraction, after the completion of roadbed filling, the actual measurement continuous 10d average settlement amount of surface subsidence rate is less than or equal to 2mm/d
Termination of pumping unloading.
Benefit is banketed to design altitude.
Claims (4)
1. a kind of method of cocoanut shell filling combined vacuum prepressing blowing filling soil base, it is characterised in that: be mixed in cocoanut shell and fill
In banketing, the mixture of cocoanut shell and filling soil is fills up to design altitude, and carry out discharging consolidation with vacuum method, led
It wants step to have: 1) admixing cocoanut shell in storing bin；2) by the mixture hydraulic reclamation of barged-in fill and cocoanut shell to designed elevation；3) exist
It is laid with one layer of 20cm sand bedding course above designed elevation in step 2 and sets drain bar, sand bedding course sand material uses medium coarse sand, described
For fine grain clay content of the partial size of medium coarse sand less than 0.075mm less than 5%, infiltration coefficient is not less than 2 × 10-2Cm/s guarantees
Horizontal drainage effect, plastic draining board use Type B plate, construction depth 20m, spacing 1.2m, and equilateral triangle arrangement sets verticality
Deviation controls in ± 1.5%, and every rewinds of length no more than 50cm, otherwise should be embedded in immersed tube plate, plastic strip plate top again
Sand bedding course length is not less than 0.3m；4) it is laid with the middle layer 30cm sand bedding course and embedded vacuum pipe network, vacuum tube selects reinforcement PVC plastic
Pipe；5) sealing ditch is excavated, being laid with sealing film need to be vacuumized when sealing film is laid with, and make to seal film vacuum diaphragm, in vacuum
Film is respectively laid with one layer of 250g/m2 acupuncture nonwoven geotextiles up and down；6) examination vacuumizes and checks whether gas leakage；7) pumping stablize under after
It is continuous to be pumped to settlement stability；8) it mends and bankets to design altitude.
2. the method for cocoanut shell filling combined vacuum prepressing blowing filling soil base according to claim 1, it is characterised in that: step
4) supervisor of vacuum tube is φ 75mm in, and branch pipe is φ 50mm, it is desirable that the intensity of PVC pipe can bear the pressure of 400kPa, step
It is rapid 5) in non-woven geotextile, the thickness, permeability, tensile strength, type, specification and the performance that seal film should meet design and want
It asks, sealing ditch has to comply with epiphragma and holds one's breath requirements in step 5), using hand fit's excavator excavation, ditch 0.8~1.0m of bottom width,
Ditch depth 1.5m~2.0m is that a work section successively promotes with the long 20m of ditch with digging with paving with filling out, and when excavation prevents side slope from collapsing
Just, the mound dug out when plastic film mulch on sidewalk, must not pile up on sand bedding course on the outside, avoid sand grains from sliding into ditch, backfill in ditch
Clay wants closely knit and is not mingled with sandstone, if sealing bottom of trench or two sides with the presence of rubble or the interlayer of layer of sand good penetrability, by this
Interlayer is excavated completely, and backfills weak soil.
3. the method for cocoanut shell filling combined vacuum prepressing blowing filling soil base according to claim 1, it is characterised in that: it is described
Step 5) is respectively laid with one layer of 250g/m in order to protect vacuum diaphragm, in vacuum diaphragm up and down2Acupuncture nonwoven geotextiles, to vacuum line,
After vacuum probe and other observation instruments have been buried, first layer non-woven geotextile, the first layer nonwoven are laid on sealing film
Geotextiles receive 2~3m of side, are laid with area and are less than sealing film, are laid with range and are greater than stabilization zone, 1m is widened on every side, according to place feelings
Non-woven geotextile is unfolded in certain direction and is laid with smooth by condition, and for non-woven geotextile overlapping part using sewing up processing, use is portable
Sewing machine is sewed up, and lap width is no less than 30mm when sewing up.
4. the method for cocoanut shell filling combined vacuum prepressing blowing filling soil base according to claim 1, it is characterised in that: it is described
Examination is carried out in step 6) to vacuumize, the incipient stage controls vacuum pressed rate, to extract the air in sand bedding course out, vacuum pressure from
20kPa increases step by step, and with the discharge of air under film and the raising of soil layer discharging consolidation degree, vacuum degree is gradually increased simultaneously steady in film
It is scheduled on 80kPa, is starting vacuumizing phase, with the discharge of air and water, check sealing film comprehensively and seal the close of ditch
Envelope state is repaired and is sealed in time to gas leakage part if any gas leakage, prevents from influencing vacuum effectiveness, in step 7) under film vacuum
Degree is stably maintained under conditions of 80kPa or more, continuous air extraction, after the completion of roadbed filling, surveys the continuous 10d of surface subsidence rate
Average settlement amount is less than or equal to 2mm/d, can termination of pumping unloading.
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 CN107245998A (en) | 2017-10-13 |
| CN107245998B true CN107245998B (en) | 2019-10-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| 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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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 |
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| Publication number | Publication date |
|---|---|
| CN107245998A (en) | 2017-10-13 |
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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 |